* Re: Freescale 8541 support
From: Dan Wilson @ 2005-11-23 16:16 UTC (permalink / raw)
To: linuxppc-embedded
In-Reply-To: <A49A0ECA-B0EB-4673-928D-0C41D0856635@kernel.crashing.org>
On 11/23/2005 at 9:51 AM Kumar Gala wrote:
> If I'm not mistaken the Denx kernel is based on 2.6.14. This should
> have support for the MPC8541. Realize that the differences between
> MPC8540 and MPC8541/55 are minor. Is there something specific on
> MPC8541 your looking for.
>
> - kumar
Thanks for the reply! Unfortunately, I am constrained to use the 2.4=
kernel by another software package that I have to use, which doesn't yet=
support 2.6. It appears to me that the 8541/8555 support was put into 2.6=
and never back-ported to 2.4. I'll take a look at the manuals today and=
compare the 8540 to the 8541: perhaps I can live with the 8540 support=
that does appear to be in the 2.4 kernel. If not, hopefully the porting=
job won't be very difficult.
Thanks for your help!
Dan.
^ permalink raw reply
* Re: [PATCH] ppc32: 8xx board-specific platform stuff for fs_enet
From: Vitaly Bordug @ 2005-11-23 16:14 UTC (permalink / raw)
To: Kumar Gala; +Cc: Paul Mackerras, linuxppc-embedded list
In-Reply-To: <ACB2F36A-0A37-4EA1-9E4A-F773AD4E0D86@kernel.crashing.org>
Kumar Gala wrote:
>
> On Nov 23, 2005, at 3:11 AM, Marcelo Tosatti wrote:
>
>> On Wed, Nov 23, 2005 at 01:40:38PM +1100, Paul Mackerras wrote:
>>> Marcelo Tosatti writes:
>>>
>>>> Paul, you're OK with the following definitions on asm-ppc/io.h?
>>>>
>>>> +/* access ports */
>>>> +#define setbits32(_addr, _v) out_be32(&(_addr), in_be32(&(_addr))
>>>> | (_v))
>>>> +#define clrbits32(_addr, _v) out_be32(&(_addr), in_be32(&(_addr)) &
>>>> ~(_v))
>>>> +
>>>> +#define setbits16(_addr, _v) out_be16(&(_addr), in_be16(&(_addr))
>>>> | (_v))
>>>> +#define clrbits16(_addr, _v) out_be16(&(_addr), in_be16(&(_addr)) &
>>>> ~(_v))
>>>
>>> I guess so... how many drivers need these things?
>>
>> Many.
>
> Shouldn't these go into some non-arch specific location? I hate making
> drivers only build on a give arch.
>
Hmm, what is the worth? IIRC, in_be* stuff is defined for only ppc-specific
archs(ppc(64),ppc,powerpc).
> - kumar
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
>
--
Sincerely,
Vitaly
^ permalink raw reply
* RE: [PATCH] MTD: Add support for the PM82x Boards.
From: Heiko Schocher @ 2005-11-23 16:08 UTC (permalink / raw)
To: David Woodhouse; +Cc: linuxppc-dev, linux-mtd
In-Reply-To: <1132750986.15117.252.camel@baythorne.infradead.org>
Hello David,
On Wednesday, November 23, 2005 2:03 PM David Woodhouse wrote:
>> now without drivers/mtd/devices/docprobe.c
>
> Thanks. Are those Intel chips really not CFI-compliant?
I ported this code from the 2.4er Kernel, so I didn´t know
the background, why this code uses the jedec-probe. What
exactly bothers you?
> Please could you also correct each instance of 'MB' to 'MiB'?
OK, i send a new patch.
thanks
Heiko
^ permalink raw reply
* Re: [PATCH] ppc32: 8xx board-specific platform stuff for fs_enet
From: Kumar Gala @ 2005-11-23 16:05 UTC (permalink / raw)
To: Marcelo Tosatti; +Cc: Paul Mackerras, linuxppc-embedded list
In-Reply-To: <20051123091107.GA3482@logos.cnet>
On Nov 23, 2005, at 3:11 AM, Marcelo Tosatti wrote:
> On Wed, Nov 23, 2005 at 01:40:38PM +1100, Paul Mackerras wrote:
>> Marcelo Tosatti writes:
>>
>>> Paul, you're OK with the following definitions on asm-ppc/io.h?
>>>
>>> +/* access ports */
>>> +#define setbits32(_addr, _v) out_be32(&(_addr), in_be32(&
>>> (_addr)) | (_v))
>>> +#define clrbits32(_addr, _v) out_be32(&(_addr), in_be32(&
>>> (_addr)) & ~(_v))
>>> +
>>> +#define setbits16(_addr, _v) out_be16(&(_addr), in_be16(&
>>> (_addr)) | (_v))
>>> +#define clrbits16(_addr, _v) out_be16(&(_addr), in_be16(&
>>> (_addr)) & ~(_v))
>>
>> I guess so... how many drivers need these things?
>
> Many.
Shouldn't these go into some non-arch specific location? I hate
making drivers only build on a give arch.
- kumar
^ permalink raw reply
* Re: Help ! 2.6.14 kernel can't bring up
From: David H. Lynch Jr @ 2005-11-23 15:54 UTC (permalink / raw)
To: zjznliang; +Cc: linuxppc-embedded
I was stuck at exactly this point for over a week. Basically, at this
point lots of things happen all at once:
Prior to this the MMU has had a small collection of TLB's setup.
The 6 lines of code you listed:
change from whatever Machine Status you powered up in to the proper
Machine status for running the kernel with memory translation and
exception handling enabled.
and switch from executing using physical addresses to executing using
virtual addresses.
and "jump" via the "rfi" from real mode to virtual mode at virtual
address start_here.
If you are using a LED IO port for debugging, then you MUST setup a TLB
entry for that LED or after the rfi you will not be able to write to it.
There should be a setup tlb block inside a CONFIG_SERIAL_TEXT_DEBUG
block copy it, change the address to match your LED port and set a new
index and your LED debug port should be good to go.
In my instance, my problem turned out to be with Machine Check
exceptions - The moment that rfi executes not only is virtual memory
enabled - but all exception handling is turned on.
I was able to find this my "testing" things one bit in the MSR at a
time, until I figured out which ones could be turned on and which could not.
zjznliang wrote:
> Hello David H. Lynch Jr.,！
>
> Now ,I am tracing the code in Linux 2.6.14 in head_8xx.S .
> I used led to trace the procedure,and I found the block in it .
>
> 644 /* Now turn on the MMU for real! */
> 645 li r4,MSR_KERNEL
> 646 lis r3,start_kernel@h
> 647 ori r3,r3,start_kernel@l
> 648 mtspr SPRN_SRR0,r3
> 649 mtspr SPRN_SRR1,r4
> 650 rfi /* enable MMU and jump to start_kernel */
>
> I set the led between the 649 and 650 ,and the led was light ,
> but when I set the led in the function start_kernel the led is not
> light .
>
> I thought the function start_kernel was not jumped to .
>
> what do you think ?
>
^ permalink raw reply
* Re: USB Keyboard Support
From: Jarno Manninen @ 2005-11-23 15:55 UTC (permalink / raw)
To: linuxppc-embedded; +Cc: Absolut Hunter
In-Reply-To: <000901c5f03c$5d4e8c60$6405a8c0@absolut>
On Wednesday 23 November 2005 16:44, Absolut Hunter wrote:
> We are using a Sm501 video chip and also have that working now, I was
> hoping to get the USB Keyboard system and running so I could totally run
> the system without having to use the serial port as the stdin/stdout
> anymore.
Um. The serial port has its advantages when doing developement. If or when you
crash the whole system you still have the output on the terminal. :)
> Anyone know what else is required in order to setup the USB keyboard as the
> input device when using a VGA console?
If you have frame buffer up and running then setting console=tty0 should be
enough. Depending on your system you might want to check where
the /dev/console points to.
- Jarno
^ permalink raw reply
* Re: Freescale 8541 support
From: Kumar Gala @ 2005-11-23 15:51 UTC (permalink / raw)
To: Dan Wilson; +Cc: linuxppc-embedded
In-Reply-To: <200511230732120750.2B0DEEED@smtp.dslextreme.com>
On Nov 23, 2005, at 9:32 AM, Dan Wilson wrote:
> Hello,
>
> I am trying to find embedded linux support for the Freescale
> 8541/8555 processor. I downloaded the latest ELDK sources from the
> Denx CVS server and found 8540 support in there but nothing (unless
> I missed it) for the 8541.
>
> Does anyone know of any support for that processor?
If I'm not mistaken the Denx kernel is based on 2.6.14. This should
have support for the MPC8541. Realize that the differences between
MPC8540 and MPC8541/55 are minor. Is there something specific on
MPC8541 your looking for.
- kumar
^ permalink raw reply
* Freescale 8541 support
From: Dan Wilson @ 2005-11-23 15:32 UTC (permalink / raw)
To: linuxppc-embedded
Hello,
I am trying to find embedded linux support for the Freescale 8541/8555=
processor. I downloaded the latest ELDK sources from the Denx CVS server=
and found 8540 support in there but nothing (unless I missed it) for the=
8541.
Does anyone know of any support for that processor?
Thanks,
Dan.
^ permalink raw reply
* USB Keyboard Support
From: Absolut Hunter @ 2005-11-23 14:44 UTC (permalink / raw)
To: linuxppc-embedded
Everyone,
I recently got the USB device up and working under DENX Linux 2.4.25 with a
MPC8280.
We are using a Sm501 video chip and also have that working now, I was hoping
to get the USB Keyboard system and running so I could totally run the system
without having to use the serial port as the stdin/stdout anymore.
However, I am having trouble getting any USB keyboard input to be recognized
as the stdin or anything really.
I have verified that the kernel sees the keyboard and associates the correct
HID driver, and keyboard driver with it. Also I have added the
/dev/input/input0-3 files and have verified that they are receiving garbage
when keys are pressed. i.e. via 'cat input0' and dumping the input to the
console.
Anyone know what else is required in order to setup the USB keyboard as the
input device when using a VGA console?
Thanks,
-Russ
^ permalink raw reply
* Re: [PATCH] ppc32: 8xx board-specific platform stuff for fs_enet
From: Marcelo Tosatti @ 2005-11-23 9:11 UTC (permalink / raw)
To: Paul Mackerras; +Cc: linuxppc-embedded list
In-Reply-To: <17283.54950.681390.749679@cargo.ozlabs.ibm.com>
On Wed, Nov 23, 2005 at 01:40:38PM +1100, Paul Mackerras wrote:
> Marcelo Tosatti writes:
>
> > Paul, you're OK with the following definitions on asm-ppc/io.h?
> >
> > +/* access ports */
> > +#define setbits32(_addr, _v) out_be32(&(_addr), in_be32(&(_addr)) | (_v))
> > +#define clrbits32(_addr, _v) out_be32(&(_addr), in_be32(&(_addr)) & ~(_v))
> > +
> > +#define setbits16(_addr, _v) out_be16(&(_addr), in_be16(&(_addr)) | (_v))
> > +#define clrbits16(_addr, _v) out_be16(&(_addr), in_be16(&(_addr)) & ~(_v))
>
> I guess so... how many drivers need these things?
Many.
Check for instance git-diff-tree -p e37b0c9670fed2264661ade1beb5c228dec29c96
^ permalink raw reply
* Re: about powerpc design,thanks very much
From: Vitaly Bordug @ 2005-11-23 14:39 UTC (permalink / raw)
To: zengshuai; +Cc: linuxppc-embedded
In-Reply-To: <10059043.1132751565040.JavaMail.postfix@mx3.mail.sohu.com>
zengshuai@sogou.com wrote:
> first,i'm sorry my poor English.
> Our team is a new team.we want to design a production,which used to receive/transmit aal2 and aal5.
> So we choose the MPC8280 and PQ2FADS_ZU(a kind of MPC8280 Boards). Now we can run linux on this board.
> But there are so less example code about ATM,and they don't support linux,but bare-board.
> We are all student.We don't know how to go on our design.Use linux or not,use Codewarrior Development
> Studio PowerPC ISA Edition for Comm Processors or Linux Application/Platform Edition,can get some code
> we needed or not,and so on.
> Our freescale agent just sale us a PQ2FADS_ZU board,and say they didn't know any more.
> We need some help and some advise.What are you usually to do next to go on your design? thanks a lot.
>
There is a sf project - http://mpc8260sar.sourceforge.net/. I don't know if PQ2FADS is
supported, but it supports 8272ADS which is really similar.
For start, take a look at http://www.denx.de/wiki/DULG/Manual.
> ------------------------------
> 我现在使用Sogou.com的2G邮箱了，你也来试试吧!
> http://mail.sogou.com/recommend/sogoumail_invite_reg1.jsp?from=sogouinvitation&s_EMAIL=zengshuai%40sogou.com&username=linuxppc-embedded&FullName=linuxppc-embedded&Email=linuxppc-embedded%40ozlabs.org&verify=755eff4e640bdcfc57d93cbd8b0a9cb7
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
>
祝好运
--
Sincerely,
Vitaly
^ permalink raw reply
* Re: [PATCH] ppc32: 8xx board-specific platform stuff for fs_enet
From: Marcelo Tosatti @ 2005-11-23 8:34 UTC (permalink / raw)
To: Vitaly Bordug; +Cc: linuxppc-embedded list
In-Reply-To: <437DFEFA.4080203@ru.mvista.com>
Hi Vitaly,
On Fri, Nov 18, 2005 at 07:19:06PM +0300, Vitaly Bordug wrote:
> This adds board-specific files needed to utilize fs_enet Ethernet driver
> for MPC885ADS and MPC866ADS.
>
> Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Looks nice.
Just one thing: Would mind separating the setbits/clearbits patch, and
while you're at it, convert the current read-and-modify operations to
setbits/clearbits?
They have been switched to use IO accessors with GIT commit
e37b0c9670fed2264661ade1beb5c228dec29c96
Thanks
^ permalink raw reply
* about powerpc design,thanks very much
From: zengshuai @ 2005-11-23 13:12 UTC (permalink / raw)
To: linuxppc-embedded
first,i'm sorry my poor English.
Our team is a new team.we want to design a production,which used to receive/transmit aal2 and aal5.
So we choose the MPC8280 and PQ2FADS_ZU(a kind of MPC8280 Boards). Now we can run linux on this board.
But there are so less example code about ATM,and they don't support linux,but bare-board.
We are all student.We don't know how to go on our design.Use linux or not,use Codewarrior Development
Studio PowerPC ISA Edition for Comm Processors or Linux Application/Platform Edition,can get some code
we needed or not,and so on.
Our freescale agent just sale us a PQ2FADS_ZU board,and say they didn't know any more.
We need some help and some advise.What are you usually to do next to go on your design? thanks a lot.
------------------------------
我现在使用Sogou.com的2G邮箱了，你也来试试吧!
http://mail.sogou.com/recommend/sogoumail_invite_reg1.jsp?from=sogouinvitation&s_EMAIL=zengshuai%40sogou.com&username=linuxppc-embedded&FullName=linuxppc-embedded&Email=linuxppc-embedded%40ozlabs.org&verify=755eff4e640bdcfc57d93cbd8b0a9cb7
^ permalink raw reply
* Re: [PATCH] MTD: Add support for the PM82x Boards.
From: David Woodhouse @ 2005-11-23 13:03 UTC (permalink / raw)
To: hs; +Cc: linuxppc-dev, tglx, linux-mtd
In-Reply-To: <AHEILKONAKAEJPHNMOPNCEMHCDAA.hs@denx.de>
On Wed, 2005-11-23 at 13:37 +0100, Heiko Schocher wrote:
> now without drivers/mtd/devices/docprobe.c
Thanks. Are those Intel chips really not CFI-compliant?
Please could you also correct each instance of 'MB' to 'MiB'?
--
dwmw2
^ permalink raw reply
* Re: [PATCH] MTD: Add support for the PM82x Boards.
From: Heiko Schocher @ 2005-11-23 12:37 UTC (permalink / raw)
To: linux-mtd; +Cc: linuxppc-dev, tglx, David Woodhouse
Hello,
> > > Please use the new DiskOnChip driver in drivers/mtd/nand/ not the old
> > > one.
> >
> > I use the new driver.
> > I made the changes in drivers/mtd/devices/docprobe.c, because I
> > ported it from the 2.4 Kernel. Should I delete this and resubmit
> > the patch?
>
> Yes, please.
now without drivers/mtd/devices/docprobe.c
[PATCH] MTD: Add support for the PM82x Boards.
Included support for the NOR flashes on the Modul,
and for the DiskOnChip on the Board.
Signed-off-by: Heiko Schocher <hs@denx.de>
---
drivers/mtd/chips/jedec_probe.c | 50 +++++
drivers/mtd/maps/Kconfig | 6 +
drivers/mtd/maps/Makefile | 1
drivers/mtd/maps/pm82x.c | 360 +++++++++++++++++++++++++++++++++++++++
drivers/mtd/nand/diskonchip.c | 4
5 files changed, 421 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/chips/jedec_probe.c b/drivers/mtd/chips/jedec_probe.c
index edb306c..e230127 100644
--- a/drivers/mtd/chips/jedec_probe.c
+++ b/drivers/mtd/chips/jedec_probe.c
@@ -104,6 +104,11 @@
#define I28F320B3B 0x8897
#define I28F640B3T 0x8898
#define I28F640B3B 0x8899
+#define I28F640C3B 0x88CD
+#define I28F160F3T 0x88F3
+#define I28F160F3B 0x88F4
+#define I28F160C3T 0x88C2
+#define I28F160C3B 0x88C3
#define I82802AB 0x00ad
#define I82802AC 0x00ac
@@ -1080,6 +1085,51 @@ static const struct amd_flash_info jedec
}
}, {
.mfr_id = MANUFACTURER_INTEL,
+ .dev_id = I28F640C3B,
+ .name = "Intel 28F640C3B",
+ .uaddr = {
+ [0] = MTD_UADDR_UNNECESSARY, /* x8 */
+ [1] = MTD_UADDR_UNNECESSARY, /* x16 */
+ },
+ .DevSize = SIZE_8MiB,
+ .CmdSet = P_ID_INTEL_STD,
+ .NumEraseRegions= 2,
+ .regions = {
+ ERASEINFO(0x02000, 8),
+ ERASEINFO(0x10000, 127),
+ }
+ }, {
+ .mfr_id = MANUFACTURER_INTEL,
+ .dev_id = I28F160C3B,
+ .name = "Intel 28F160C3B",
+ .uaddr = {
+ [0] = MTD_UADDR_UNNECESSARY, /* x8 */
+ [1] = MTD_UADDR_UNNECESSARY, /* x16 */
+ },
+ .DevSize = SIZE_2MiB,
+ .CmdSet = P_ID_INTEL_STD,
+ .NumEraseRegions= 2,
+ .regions = {
+ ERASEINFO(0x02000, 8),
+ ERASEINFO(0x10000, 31),
+ }
+ }, {
+ .mfr_id = MANUFACTURER_INTEL,
+ .dev_id = I28F160C3T,
+ .name = "Intel 28F160C3T",
+ .uaddr = {
+ [0] = MTD_UADDR_UNNECESSARY, /* x8 */
+ [1] = MTD_UADDR_UNNECESSARY, /* x16 */
+ },
+ .DevSize = SIZE_2MiB,
+ .CmdSet = P_ID_INTEL_STD,
+ .NumEraseRegions= 2,
+ .regions = {
+ ERASEINFO(0x10000, 31),
+ ERASEINFO(0x02000, 8),
+ }
+ }, {
+ .mfr_id = MANUFACTURER_INTEL,
.dev_id = I82802AB,
.name = "Intel 82802AB",
.uaddr = {
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 846a533..237abe8 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -256,6 +256,12 @@ config MTD_SBC8240
Flash access on the SBC8240 board from Wind River. See
<http://www.windriver.com/products/sbc8240/>
+config MTD_PM82X
+ tristate "Flash device on PM82X Boards"
+ depends on PPC32 && 6xx && 8260 && MTD_COMPLEX_MAPPINGS && MTD_PARTITIONS
+ help
+ Flash access on the PM82X boards from Microsys.
+
config MTD_TQM8XXL
tristate "CFI Flash device mapped on TQM8XXL"
depends on MTD_CFI && TQM8xxL
diff --git a/drivers/mtd/maps/Makefile b/drivers/mtd/maps/Makefile
index 7d9e940..ecdc515 100644
--- a/drivers/mtd/maps/Makefile
+++ b/drivers/mtd/maps/Makefile
@@ -73,3 +73,4 @@ obj-$(CONFIG_MTD_OMAP_NOR) += omap_nor.o
obj-$(CONFIG_MTD_PQ2FADS) += pq2fads.o
obj-$(CONFIG_MTD_MTX1) += mtx-1_flash.o
obj-$(CONFIG_MTD_TQM834x) += tqm834x.o
+obj-$(CONFIG_MTD_PM82X) += pm82x.o
diff --git a/drivers/mtd/maps/pm82x.c b/drivers/mtd/maps/pm82x.c
new file mode 100644
index 0000000..dc0bc48
--- /dev/null
+++ b/drivers/mtd/maps/pm82x.c
@@ -0,0 +1,360 @@
+/*
+ * Copyright(C) 2005
+ * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
+ *
+ * Copyright(C) 2005
+ * Josef Wagner, MicroSys GmbH <wagner@microsys.de>
+ *
+ * This code is GPLed
+ *
+ */
+
+/*
+ * PM825/PM826 uses 4 x Intel 28F160C3B (16 Mbit)
+ * 4 x Intel 28F160C3 (16 Mbit) in one bank (64 bit bankwidth)
+ * for a total of 8MB flash
+ *
+ * PM827/PM828 uses 4 x Intel 28F640C3 (64 Mbit)
+ * in one bank (64 bit bankwidth)
+ * for a total of 32MB flash
+
+ * Thus we have to chose:
+ * - Support 64-bit bankwidth => CONFIG_MTD_CFI_B8
+ * - Support 4-chip flash interleave => CONFIG_MTD_CFI_I4
+*/
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+#include <asm/ppcboot.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+
+#if 0 /* Debugging turned off */
+# define debugk(fmt,args...) printk(fmt ,##args)
+#else
+# define debugk(fmt,args...)
+#endif
+
+#define FLASH_BANK_MAX 1
+
+/* The "residual" data board information structure the boot loader
+ * hands to us.
+ */
+extern unsigned char __res[];
+
+/* trivial struct to describe partition information */
+struct mtd_part_def
+{
+ int nums;
+ unsigned char *type;
+ struct mtd_partition* mtd_part;
+};
+
+static struct mtd_info* mtd_banks[FLASH_BANK_MAX];
+static struct map_info* map_banks[FLASH_BANK_MAX];
+static struct mtd_part_def part_banks[FLASH_BANK_MAX];
+static unsigned long num_banks;
+static unsigned long start_scan_addr;
+
+static map_word pm82x_read64(struct map_info *map, unsigned long ofs)
+{
+ map_word val;
+ val.x[0] = *((volatile __u32 *)(map->map_priv_1 + ofs));
+ val.x[1] = *(((volatile __u32 *)(map->map_priv_1 + ofs)) + 1);
+ return val;
+}
+
+static void pm82x_copy_from(struct map_info *map,
+ void *to, unsigned long from, ssize_t len)
+{
+ memcpy_fromio(to, (void *)(map->map_priv_1 + from), len);
+}
+
+static void pm82x_write64 (struct map_info *map, map_word map_d,
+ unsigned long adr)
+{
+ ulong addr = map->map_priv_1 + adr;
+ __u64 d = ((__u64)map_d.x[0] << 32) + map_d.x[1];
+ __u64 * data = &d;
+ ulong flags;
+ volatile ulong msr;
+ ulong saved_msr;
+ volatile long saved_fr[2];
+
+ local_irq_save (flags);
+
+ __asm__ __volatile__ ("mfmsr %0" : "=r" (msr):);
+ saved_msr = msr;
+ msr |= MSR_FP;
+ msr &= ~(MSR_FE0 | MSR_FE1);
+
+ __asm__ __volatile__ (
+ "mtmsr %0\n"
+ "isync\n"
+ :
+ : "r" (msr));
+
+ __asm__ __volatile__ (
+ "stfd 1, 0(%2)\n"
+ "lfd 1, 0(%0)\n"
+ "stfd 1, 0(%1)\n"
+ "lfd 1, 0(%2)\n"
+ :
+ : "r" (data), "r" (addr), "b" (saved_fr)
+ );
+
+ __asm__ __volatile__ (
+ "mtmsr %0\n"
+ "isync\n"
+ :
+ : "r" (saved_msr));
+
+ local_irq_restore (flags);
+}
+
+static void pm82x_copy_to(struct map_info *map,
+ unsigned long to, const void *from, ssize_t len)
+{
+ memcpy_toio((void *)(map->map_priv_1 + to), from, len);
+}
+
+/*
+ * The following defines the partition layout of PM825/PM826 boards.
+ *
+ * See include/linux/mtd/partitions.h for definition of the
+ * mtd_partition structure.
+ *
+ */
+
+#ifdef CONFIG_MTD_PARTITIONS
+/* partition definition for first (and only) flash bank
+ * also ref. to "drivers/char/flash_config.c"
+ */
+static struct mtd_partition pm82x_partitions_8M[] = {
+ {
+ name: "U-Boot", /* U-Boot image */
+ offset: 0x00000000,
+ size: 0x00040000, /* 256 KB */
+ },
+ {
+ name: "kernel", /* Linux kernel image */
+ offset: 0x00040000,
+ size: 0x000C0000, /* 768 KB */
+ },
+ {
+ name: "ramdisk", /* Ramdisk image */
+ offset: 0x00100000,
+ size: 0x00300000, /* 3 MB */
+ },
+ {
+ name: "user", /* User file system */
+ offset: 0x00400000,
+ size: 0x00400000, /* 4 MB */
+ },
+};
+
+static struct mtd_partition pm82x_partitions_32M[] = {
+ {
+ name: "U-Boot", /* U-Boot image */
+ offset: 0x00000000,
+ size: 0x00040000, /* 256 KB */
+ },
+ {
+ name: "kernel", /* Linux kernel image */
+ offset: 0x00040000,
+ size: 0x000C0000, /* 768 KB */
+ },
+ {
+ name: "ramdisk", /* Ramdisk image */
+ offset: 0x00100000,
+ size: 0x00300000, /* 3 MB */
+ },
+ {
+ name: "user", /* User file system */
+ offset: 0x00400000,
+ size: 0x01C00000, /* 28 MB */
+ },
+};
+
+#endif /* CONFIG_MTD_PARTITIONS */
+
+#define NB_OF(x) (sizeof (x) / sizeof (x[0]))
+
+int __init init_pm82x_mtd(void)
+{
+ int idx = 0, ret = 0;
+ unsigned long flash_addr, flash_size, mtd_size = 0;
+
+ /* pointer to PM82x board info data */
+ bd_t *bd = (bd_t *)__res;
+
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+ int n;
+ char mtdid[10];
+ const char *part_probes[] = { "cmdlinepart", NULL };
+#endif
+
+ flash_addr = bd->bi_flashstart;
+ flash_size = bd->bi_flashsize;
+
+ /* request maximum flash size address space */
+ start_scan_addr = (unsigned long)ioremap(flash_addr, flash_size);
+ if (!start_scan_addr) {
+ printk("%s: Failed to ioremap address: 0x%lx\n",
+ __FUNCTION__, flash_addr);
+ return -EIO;
+ }
+
+ for(idx = 0 ; idx < FLASH_BANK_MAX ; idx++) {
+ if (mtd_size >= flash_size)
+ break;
+
+ debugk ("%s: chip probing count %d\n", __FUNCTION__, idx);
+
+ map_banks[idx] = (struct map_info *)kmalloc(sizeof(struct map_info),
+ GFP_KERNEL);
+ if (map_banks[idx] == NULL) {
+ ret = -ENOMEM;
+ goto error_mem;
+ }
+ memset((void *)map_banks[idx], 0, sizeof(struct map_info));
+ map_banks[idx]->name = (char *)kmalloc(16, GFP_KERNEL);
+ if (map_banks[idx]->name == NULL) {
+ ret = -ENOMEM;
+ goto error_mem;
+ }
+ memset((void *)map_banks[idx]->name, 0, 16);
+
+ sprintf(map_banks[idx]->name, "PM82x-%d", idx);
+ map_banks[idx]->size = flash_size;
+ map_banks[idx]->bankwidth = 8;
+ map_banks[idx]->read = pm82x_read64;
+ map_banks[idx]->copy_from = pm82x_copy_from;
+ map_banks[idx]->write = pm82x_write64;
+ map_banks[idx]->copy_to = pm82x_copy_to;
+ map_banks[idx]->map_priv_1=
+ start_scan_addr + ((idx > 0) ?
+ (mtd_banks[idx-1] ? mtd_banks[idx-1]->size : 0) : 0);
+
+ /* start to probe flash chips */
+ mtd_banks[idx] = do_map_probe("jedec_probe", map_banks[idx]);
+ if (mtd_banks[idx]) {
+ mtd_banks[idx]->owner = THIS_MODULE;
+ mtd_size += mtd_banks[idx]->size;
+ num_banks++;
+ debugk ("%s: bank %ld, name: %s, size: %d bytes \n",
+ __FUNCTION__,
+ num_banks,
+ mtd_banks[idx]->name,
+ mtd_banks[idx]->size);
+ }
+ }
+
+ /* no supported flash chips found */
+ if (!num_banks) {
+ printk("PM82x: No supported flash chips found!\n");
+ ret = -ENXIO;
+ goto error_mem;
+ }
+
+#ifdef CONFIG_MTD_PARTITIONS
+ /*
+ * Select static partition definitions
+ */
+ if (flash_size == 0x800000) {
+ part_banks[0].mtd_part = pm82x_partitions_8M;
+ part_banks[0].nums = NB_OF(pm82x_partitions_8M);
+ } else {
+ part_banks[0].mtd_part = pm82x_partitions_32M;
+ part_banks[0].nums = NB_OF(pm82x_partitions_32M);
+ }
+ part_banks[0].type = "static image";
+
+ for(idx = 0; idx < num_banks ; idx++) {
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+ sprintf(mtdid, "%d", idx);
+ n = parse_mtd_partitions(mtd_banks[idx],
+ part_probes,
+ &part_banks[idx].mtd_part,
+ 0);
+ debugk ("%s: %d command line partitions on bank %s\n",
+ __FUNCTION__, n, mtdid);
+ if (n > 0) {
+ part_banks[idx].type = "command line";
+ part_banks[idx].nums = n;
+ }
+#endif /* CONFIG_MTD_CMDLINE_PARTS */
+
+ if (part_banks[idx].nums == 0) {
+ printk (KERN_NOTICE
+ "PM82x flash bank %d: no partition info "
+ "available, registering whole device\n", idx);
+ add_mtd_device(mtd_banks[idx]);
+ } else {
+ printk (KERN_NOTICE
+ "PM82x flash bank %d: Using %s partition "
+ "definition\n", idx, part_banks[idx].type);
+ add_mtd_partitions (mtd_banks[idx],
+ part_banks[idx].mtd_part,
+ part_banks[idx].nums);
+ }
+ }
+#else /* ! CONFIG_MTD_PARTITIONS */
+ printk (KERN_NOTICE "PM82x flash: registering %d flash banks "
+ "at once\n", num_banks);
+
+ for(idx = 0 ; idx < num_banks ; idx++) {
+ add_mtd_device(mtd_banks[idx]);
+ }
+#endif /* CONFIG_MTD_PARTITIONS */
+
+ return 0;
+error_mem:
+ for (idx = 0 ; idx < FLASH_BANK_MAX ; idx++) {
+ if (map_banks[idx] != NULL) {
+ if (map_banks[idx]->name != NULL) {
+ kfree(map_banks[idx]->name);
+ map_banks[idx]->name = NULL;
+ }
+ kfree(map_banks[idx]);
+ map_banks[idx] = NULL;
+ }
+ }
+
+ iounmap((void *)start_scan_addr);
+
+ return ret;
+}
+
+static void __exit cleanup_pm82x_mtd(void)
+{
+ unsigned int idx = 0;
+ for(idx = 0 ; idx < num_banks ; idx++) {
+ /* destroy mtd_info previously allocated */
+ if (mtd_banks[idx]) {
+ del_mtd_partitions(mtd_banks[idx]);
+ map_destroy(mtd_banks[idx]);
+ }
+ /* release map_info not used anymore */
+ kfree(map_banks[idx]->name);
+ kfree(map_banks[idx]);
+ }
+ if (start_scan_addr) {
+ iounmap((void *)start_scan_addr);
+ start_scan_addr = 0;
+ }
+}
+
+module_init(init_pm82x_mtd);
+module_exit(cleanup_pm82x_mtd);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Wolfgang Denk <wd@denx.de>");
+MODULE_DESCRIPTION("MTD map driver for PM82x boards");
diff --git a/drivers/mtd/nand/diskonchip.c b/drivers/mtd/nand/diskonchip.c
index 21d4e8f..bf7cf54 100644
--- a/drivers/mtd/nand/diskonchip.c
+++ b/drivers/mtd/nand/diskonchip.c
@@ -55,7 +55,11 @@ static unsigned long __initdata doc_loca
0xe8000, 0xea000, 0xec000, 0xee000,
#endif /* CONFIG_MTD_DOCPROBE_HIGH */
#elif defined(__PPC__)
+#if defined(CONFIG_PM82X)
+ 0xff800000,
+#else
0xe4000000,
+#endif
#elif defined(CONFIG_MOMENCO_OCELOT)
0x2f000000,
0xff000000,
\f
!-------------------------------------------------------------flip-
^ permalink raw reply related
* RE: [PATCH] MTD: Add support for the PM82x Boards.
From: Thomas Gleixner @ 2005-11-23 10:39 UTC (permalink / raw)
To: hs; +Cc: linuxppc-dev, David Woodhouse, linux-mtd
In-Reply-To: <AHEILKONAKAEJPHNMOPNKEMACDAA.hs@denx.de>
On Tue, 2005-11-22 at 07:18 +0100, Heiko Schocher wrote:
> > Please use the new DiskOnChip driver in drivers/mtd/nand/ not the old
> > one.
>
> I use the new driver.
> I made the changes in drivers/mtd/devices/docprobe.c, because I
> ported it from the 2.4 Kernel. Should I delete this and resubmit
> the patch?
Yes, please.
tglx
^ permalink raw reply
* RE: Booting hangs after "Calibrating delay loop..."
From: Nguyen Thanh Binh @ 2005-11-23 9:52 UTC (permalink / raw)
To: Jaap de Jong, linuxppc-embedded
In-Reply-To: <6915D0AE8B9047438F320B466AE30FDD152556@nvs0003.nedap.local>
Hi Jaap,
Thank you for replying.
I am still stuck on that.
Best regards,
Binh Nguyen
--- Jaap de Jong <jaap.dejong@nedap.com> wrote:
> Hi Binh,
>
> I am working with this fpga too, different board,
> same linux version,
> and not very succesfull until now too...
> But my build passes the "Calibrating delay loop..."
> and prints the
> correct value!
> Just guessing... perhaps your problem is timer
> related. Fi no timer
> interrupts?
>
> Best regards!
>
> Jaap de Jong
>
>
>
> > Hi all,
> >
> > When booting Monta Vista Linux on Memec board
> > (Virtex-4 FX12 LC), it hung after printing the
> > following message:
> >
> > "Calibrating delay loop..."
> >
> > By looking at the source code, I found that in the
> > init/main.c the problem came from the
> > calibrate_delay()
> > function: jiffies was not incremented (jiffies was
> > always equal to 0).
> >
> > Have anyone get the similar problem or any
> experience
> > to fix it?
>
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
>
https://ozlabs.org/mailman/listinfo/linuxppc-embedded
>
___________________________________________________________
Yahoo! Model Search 2005 - Find the next catwalk superstars - http://uk.news.yahoo.com/hot/model-search/
^ permalink raw reply
* Generic ethernet Driver For SMSC91111
From: srideep.devireddy @ 2005-11-23 8:31 UTC (permalink / raw)
To: linuxppc-embedded
[-- Attachment #1: Type: text/plain, Size: 903 bytes --]
HI All ,
Can some one help out in doing generic Ethernet driver functionalities
similar to SMSC91111, this is basically for MIPS ... but I am trying to
use SMSC driver in U-boot to port the same to other processor. So can
you kindly let me know which the major functionalities so that which I
can port them. It may be few functions .... So can you let me know what
those are and how to start with?
Awaiting reply on this regard ....
Best Regards
Srideep
Confidentiality Notice
The information contained in this electronic message and any attachments to this message are intended
for the exclusive use of the addressee(s) and may contain confidential or privileged information. If
you are not the intended recipient, please notify the sender at Wipro or Mailadmin@wipro.com immediately
and destroy all copies of this message and any attachments.
[-- Attachment #2: Type: text/html, Size: 3249 bytes --]
^ permalink raw reply
* Fwd: Anyone using Montavista mobilinux?
From: Paulinha @ 2005-11-23 7:29 UTC (permalink / raw)
To: Linuxppc-embedded, akonovalov
In-Reply-To: <43838F15.2030201@ru.mvista.com>
[-- Attachment #1: Type: text/plain, Size: 1614 bytes --]
Lots of thanks for the reply.
If you do not bother to aswer me again, do you know which devices are
supported by Mobilinux? I cannot find that information in the web, and if
one of them is Virtex II-Pro, it would be a good new for us.
Thanks again!
Paula
Paulinha wrote:
> Hi all,
>
> I am starting a new design for a mobile device, with a virtex 4, and
> based on the ppc405 hard core it has inside.
>
> Because of power issues, we are thinking about a OS which implies low
> disipation, and we have heared about mobilinux (Montavista distribution,
> I think).
Yes, mobilinux is a MontaVista product (it used to be called Consumer
Electronics Edition some time ago).
So far I haven't heard about plans to support Virtex 4 in Mobilinux.
Please contact MVista in an official way - I was mostly developing for
the Professional Edition (the most generic distribution with minimal
set of additional features) and may not have the whole picture.
Probably Virtex 4 support in Mobilinux could be done as a Professional
Services project.
Pro Edition LSP for Virtex 4 based Xilinx ML403 board should be available
in Q1 2006. But power consumption is not in the requirements for this LSP.
Best regards,
Andrei
> I would like to hear some oppinions or different possibilities.
>
> Thanks and have a nice day!
> Paula
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Linuxppc-embedded mailing list
> Linuxppc-embedded@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-embedded
[-- Attachment #2: Type: text/html, Size: 1949 bytes --]
^ permalink raw reply
* Re: [PATCH] ppc32: smc1_lineif fix for mpc8272
From: Kumar Gala @ 2005-11-23 7:16 UTC (permalink / raw)
To: Mike Rapoport; +Cc: 'linuxppc-embedded@ozlabs.org'
In-Reply-To: <4380829E.7040804@compulab.co.il>
It this on some specific board with an MPC8272 on it?
- kumar
On Nov 20, 2005, at 8:05 AM, Mike Rapoport wrote:
> This patch fixes the pin assignment of SMC1 for MPC8272 family
>
> Signed-off-by: Mike Rapoport <mike@compulab.co.il>
>
>
> --
> Sincerely yours,
> Mike Rapoport
>
>
> diff --git a/drivers/serial/cpm_uart/cpm_uart_cpm2.c b/drivers/
> serial/cpm_uart/cpm_uart_cpm2.c
> --- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
> +++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
> @@ -89,11 +89,19 @@ void smc1_lineif(struct uart_cpm_port *p
> {
> volatile iop_cpm2_t *io = &cpm2_immr->im_ioport;
>
> +#ifdef CONFIG_8272
> + /* SMC1 is only on port C on 8272 */
> + io->iop_pparc |= 0x0c000000;
> + io->iop_pdirc |= 0x04000000;
> + io->iop_pdirc &= ~0x08000000;
> + io->iop_psorc &= ~0x0c000000;
> +#else
> /* SMC1 is only on port D */
> io->iop_ppard |= 0x00c00000;
> io->iop_pdird |= 0x00400000;
> io->iop_pdird &= ~0x00800000;
> io->iop_psord &= ~0x00c00000;
> +#endif
>
> /* Wire BRG1 to SMC1 */
> cpm2_immr->im_cpmux.cmx_smr &= 0x0f;
^ permalink raw reply
* Re: [PATCH] I2C: Add I2C support for the MPC8260
From: Kumar Gala @ 2005-11-23 7:01 UTC (permalink / raw)
To: hs; +Cc: linuxppc-dev, lm-sensors
In-Reply-To: <AHEILKONAKAEJPHNMOPNMELLCDAA.hs@denx.de>
Can we rename the driver from mpc8260 -> cpm2. The driver should work
on any device that has a "CPM2" which includes a number of MPC82xx
and MPC85xx processors. So calling it and its config options, etc
MPC8260 is going to be confusing to users.
- kumar
On Nov 21, 2005, at 9:55 AM, Heiko Schocher wrote:
> Hello,
>
> the following Patch (against 2.6 kernel.org tree, COMMIT_ID:
> f093182d313edde9b1f86dbdaf40ba4da2dbd0e7) adds support for
> the I2C on a MPC8260.
> ---
> drivers/i2c/busses/Kconfig | 10 +
> drivers/i2c/busses/Makefile | 1
> drivers/i2c/busses/i2c-mpc8260.c | 617 +++++++++++++++++++++++++++
> +++++++++++
> include/linux/i2c-algo-8260.h | 26 ++
> include/linux/i2c-id.h | 3
> 5 files changed, 657 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
> index 4010fe9..77f9c69 100644
> --- a/drivers/i2c/busses/Kconfig
> +++ b/drivers/i2c/busses/Kconfig
> @@ -270,6 +270,16 @@ config I2C_MPC
> This driver can also be built as a module. If so, the module
> will be called i2c-mpc.
>
> +config I2C_MPC8260
> + tristate "MPC 8260"
> + depends on I2C && PPC32
> + help
> + If you say yes to this option, support will be included for the
> + I2C interface on the MPC8260.
> +
> + This driver can also be built as a module. If so, the module
> + will be called i2c-m8260.
> +
> config I2C_NFORCE2
> tristate "Nvidia nForce2, nForce3 and nForce4"
> depends on I2C && PCI
> diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
> index f1df00f..b4d8cea 100644
> --- a/drivers/i2c/busses/Makefile
> +++ b/drivers/i2c/busses/Makefile
> @@ -43,6 +43,7 @@ obj-$(CONFIG_I2C_VIAPRO) += i2c-viapro.o
> obj-$(CONFIG_I2C_VOODOO3) += i2c-voodoo3.o
> obj-$(CONFIG_SCx200_ACB) += scx200_acb.o
> obj-$(CONFIG_SCx200_I2C) += scx200_i2c.o
> +obj-$(CONFIG_I2C_MPC8260) += i2c-mpc8260.o
>
> ifeq ($(CONFIG_I2C_DEBUG_BUS),y)
> EXTRA_CFLAGS += -DDEBUG
> diff --git a/drivers/i2c/busses/i2c-mpc8260.c b/drivers/i2c/busses/
> i2c-mpc8260.c
> new file mode 100644
> index 0000000..f1bfa51
> --- /dev/null
> +++ b/drivers/i2c/busses/i2c-mpc8260.c
> @@ -0,0 +1,617 @@
> +/*
> + * (C) Copyright 2005
> + * Heiko Schocher <hs@denx.de>
> + *
> + * This is a combined i2c adapter and algorithm driver for the
> + * MPC8260 Processor
> + *
> + * Release 0.1
> + *
> + * This file is licensed under the terms of the GNU General Public
> + * License version 2. This program is licensed "as is" without any
> + * warranty of any kind, whether express or implied.
> + */
> +
> +#include <linux/config.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/sched.h>
> +#include <linux/init.h>
> +#include <linux/pci.h>
> +#include <asm/io.h>
> +#include <linux/fsl_devices.h>
> +#include <linux/i2c.h>
> +#include <linux/interrupt.h>
> +#include <linux/delay.h>
> +#include <asm/immap_cpm2.h>
> +#include <asm/mpc8260.h>
> +#include <asm/cpm2.h>
> +
> +#include <linux/i2c-algo-8260.h>
> +#include <linux/platform_device.h>
> +
> +#define CPM_MAX_READ 513
> +
> +static wait_queue_head_t iic_wait;
> +static ushort r_tbase, r_rbase;
> +
> +int cpm_scan = 0;
> +int cpm_debug = 0;
> +
> +struct mpc_i2c {
> + u32 interrupt;
> + wait_queue_head_t queue;
> + struct i2c_adapter adap;
> + int irq;
> + u32 flags;
> + struct i2c_algo_8260_data *data;
> +};
> +
> +static struct i2c_algo_8260_data pm82x_data;
> +
> +static void
> +mpc8260_iic_init(struct i2c_algo_8260_data *data)
> +{
> + volatile cpm_cpm2_t *cp;
> + volatile cpm2_map_t *immap;
> +
> + cp = cpmp; /* Get pointer to Communication Processor */
> + immap = (cpm2_map_t *)CPM_MAP_ADDR; /* and to internal registers */
> +
> + *(ushort *)(&immap->im_dprambase[PROFF_I2C_BASE]) = PROFF_I2C;
> + data->iip = (iic_t *)&immap->im_dprambase[PROFF_I2C];
> +
> + data->i2c = (i2c_cpm2_t *)&(immap->im_i2c);
> + data->cp = cp;
> +
> + /* Initialize Port D IIC pins.
> + */
> + immap->im_ioport.iop_ppard |= 0x00030000;
> + immap->im_ioport.iop_pdird &= ~0x00030000;
> + immap->im_ioport.iop_podrd |= 0x00030000;
> + immap->im_ioport.iop_psord |= 0x00030000;
> +
> + /* Allocate space for two transmit and two receive buffer
> + * descriptors in the DP ram.
> + */
> + data->dp_addr = cpm_dpalloc(sizeof(cbd_t) * 4, 8);
> +
> + /* ptr to i2c area */
> + data->i2c = (i2c_cpm2_t *)&(((cpm2_map_t *)CPM_MAP_ADDR)->im_i2c);
> +}
> +
> +static irqreturn_t mpc8260_i2c_isr(int irq, void *dev_id, struct
> pt_regs *regs)
> +{
> + struct mpc_i2c *mpc_i2c = dev_id;
> + struct i2c_algo_8260_data *cpm_adap = mpc_i2c->data;
> + volatile i2c_cpm2_t *i2c = cpm_adap->i2c;
> +
> + if (cpm_debug > 1)
> + printk(KERN_DEBUG "cpm_iic_interrupt(dev_id=%p)\n", dev_id);
> +
> + /* Clear interrupt.
> + */
> + i2c->i2c_i2cer = 0xff;
> +
> + /* Get 'me going again.
> + */
> + wake_up_interruptible(&iic_wait);
> + return IRQ_HANDLED;
> +}
> +
> +
> +static void
> +cpm_iic_init(struct i2c_algo_8260_data *cpm_adap)
> +{
> + volatile iic_t *iip = cpm_adap->iip;
> + volatile i2c_cpm2_t *i2c = cpm_adap->i2c;
> +
> + if (cpm_debug) printk(KERN_DEBUG "cpm_iic_init() - iip=%p\n",iip);
> +
> + /* Initialize the parameter ram.
> + * We need to make sure many things are initialized to zero,
> + * especially in the case of a microcode patch.
> + */
> + iip->iic_rstate = 0;
> + iip->iic_rdp = 0;
> + iip->iic_rbptr = 0;
> + iip->iic_rbc = 0;
> + iip->iic_rxtmp = 0;
> + iip->iic_tstate = 0;
> + iip->iic_tdp = 0;
> + iip->iic_tbptr = 0;
> + iip->iic_tbc = 0;
> + iip->iic_txtmp = 0;
> +
> + /* Set up the IIC parameters in the parameter ram.
> + */
> + iip->iic_tbase = r_tbase = cpm_adap->dp_addr;
> + iip->iic_rbase = r_rbase = cpm_adap->dp_addr + sizeof(cbd_t)*2;
> +
> + iip->iic_tfcr = CPMFCR_GBL | CPMFCR_EB;
> + iip->iic_rfcr = CPMFCR_GBL | CPMFCR_EB;
> +
> + /* Set maximum receive size.
> + */
> + iip->iic_mrblr = CPM_MAX_READ;
> +
> + /* Initialize Tx/Rx parameters.
> + */
> + {
> + volatile cpm_cpm2_t *cp = cpm_adap->cp;
> + cp->cp_cpcr =
> + mk_cr_cmd(CPM_CR_I2C_PAGE, CPM_CR_I2C_SBLOCK, 0x00,
> CPM_CR_INIT_TRX) | CPM_CR_FLG;
> + while (cp->cp_cpcr & CPM_CR_FLG);
> + }
> +
> + /* Select an arbitrary address. Just make sure it is unique.
> + */
> + i2c->i2c_i2add = 0x34;
> +
> + /* Divider is 2 * ( 15 + 3 )
> + */
> + i2c->i2c_i2brg = 0x0f;
> +
> + /* Pre-divider is BRGCLK/4
> + */
> + i2c->i2c_i2mod = 0x06;
> +
> + /* Disable interrupts.
> + */
> + i2c->i2c_i2cmr = 0;
> + i2c->i2c_i2cer = 0xff;
> +
> + init_waitqueue_head(&iic_wait);
> +}
> +
> +
> +#if 0
> +static int
> +cpm_iic_shutdown(struct i2c_algo_8260_data *cpm_adap)
> +{
> + volatile i2c_cpm2_t *i2c = cpm_adap->i2c;
> +
> + /* Shut down IIC.
> + */
> + i2c->i2c_i2mod = 0;
> + i2c->i2c_i2cmr = 0;
> + i2c->i2c_i2cer = 0xff;
> +
> + return(0);
> +}
> +#endif
> +
> +static void
> +cpm_reset_iic_params(volatile iic_t *iip)
> +{
> + iip->iic_tbase = r_tbase;
> + iip->iic_rbase = r_rbase;
> +
> + iip->iic_tfcr = CPMFCR_GBL | CPMFCR_EB;
> + iip->iic_rfcr = CPMFCR_GBL | CPMFCR_EB;
> +
> + iip->iic_mrblr = CPM_MAX_READ;
> +
> + iip->iic_rstate = 0;
> + iip->iic_rdp = 0;
> + iip->iic_rbptr = 0;
> + iip->iic_rbc = 0;
> + iip->iic_rxtmp = 0;
> + iip->iic_tstate = 0;
> + iip->iic_tdp = 0;
> + iip->iic_tbptr = 0;
> + iip->iic_tbc = 0;
> + iip->iic_txtmp = 0;
> +}
> +
> +#define BD_SC_NAK ((ushort)0x0004) /* NAK - did not respond */
> +#define CPM_CR_CLOSE_RXBD ((ushort)0x0007)
> +
> +static void force_close(struct i2c_algo_8260_data *cpm)
> +{
> +#if 0
> + volatile cpm_cpm2_t *cp = cpm->cp;
> +
> + if (cpm_debug) printk(KERN_DEBUG "force_close()\n");
> + cp->cp_cpcr =
> + mk_cr_cmd(CPM_CR_CH_I2C, CPM_CR_CLOSE_RXBD) |
> + CPM_CR_FLG;
> +
> + while (cp->cp_cpcr & CPM_CR_FLG);
> +#endif
> +}
> +
> +
> +/* Read from IIC...
> + * abyte = address byte, with r/w flag already set
> + */
> +static int
> +cpm_iic_read(struct i2c_algo_8260_data *cpm, u_char abyte, char
> *buf, int count)
> +{
> + volatile cpm2_map_t *immap = (cpm2_map_t *)CPM_MAP_ADDR;
> + volatile iic_t *iip = cpm->iip;
> + volatile i2c_cpm2_t *i2c = cpm->i2c;
> + volatile cbd_t *tbdf, *rbdf;
> + u_char *tb;
> + unsigned long flags;
> +
> + if (count >= CPM_MAX_READ)
> + return -EINVAL;
> +
> + tbdf = (cbd_t *)&immap->im_dprambase[iip->iic_tbase];
> + rbdf = (cbd_t *)&immap->im_dprambase[iip->iic_rbase];
> +
> + /* To read, we need an empty buffer of the proper length.
> + * All that is used is the first byte for address, the remainder
> + * is just used for timing (and doesn't really have to exist).
> + */
> + if (/*cpm->reloc*/0) {
> + cpm_reset_iic_params(iip);
> + }
> + tb = cpm->temp;
> + tb = (u_char *)(((uint)tb + 15) & ~15);
> + tb[0] = abyte; /* Device address byte w/rw flag */
> +
> + dma_cache_wback_inv (tb, 1);
> +
> + if (cpm_debug) printk(KERN_DEBUG "cpm_iic_read(abyte=0x%x)\n",
> abyte);
> +
> + tbdf->cbd_bufaddr = __pa(tb);
> + tbdf->cbd_datlen = count + 1;
> + tbdf->cbd_sc =
> + BD_SC_READY | BD_SC_INTRPT | BD_SC_LAST |
> + BD_SC_WRAP | BD_IIC_START;
> +
> + rbdf->cbd_datlen = 0;
> + rbdf->cbd_bufaddr = __pa(buf);
> + rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP;
> +
> + if (count > 0 && count < CPM_MAX_READ)
> + iip->iic_mrblr = count; /* prevent excessive read */
> +
> + dma_cache_inv (buf, count);
> +
> + /* Chip bug, set enable here */
> + local_irq_save(flags);
> + i2c->i2c_i2cmr = 0x13; /* Enable some interupts */
> + i2c->i2c_i2cer = 0xff;
> + i2c->i2c_i2mod |= 1; /* Enable */
> + i2c->i2c_i2com = 0x81; /* Start master */
> +
> + /* Wait for IIC transfer */
> + interruptible_sleep_on(&iic_wait);
> + local_irq_restore(flags);
> + if (signal_pending(current))
> + return -EIO;
> +
> + if (cpm_debug) {
> + printk(KERN_DEBUG "tx sc %04x, rx sc %04x\n",
> + tbdf->cbd_sc, rbdf->cbd_sc);
> + }
> +
> + if (tbdf->cbd_sc & BD_SC_NAK) {
> + printk(KERN_INFO "IIC read; no ack\n");
> + return 0;
> + }
> +
> + if (rbdf->cbd_sc & BD_SC_EMPTY) {
> + printk(KERN_INFO "IIC read; complete but rbuf empty\n");
> + force_close(cpm);
> + printk(KERN_INFO "tx sc %04x, rx sc %04x\n",
> + tbdf->cbd_sc, rbdf->cbd_sc);
> + }
> +
> + if (cpm_debug) printk(KERN_DEBUG "read %d bytes\n", rbdf-
> >cbd_datlen);
> +
> + if (rbdf->cbd_datlen < count) {
> + printk(KERN_INFO "IIC read; short, wanted %d got %d\n",
> + count, rbdf->cbd_datlen);
> + return 0;
> + }
> + if (cpm_debug) {
> + int u;
> + for (u = 0; u < count; u++) {
> + printk(KERN_DEBUG "buf[%d] = 0x%x\n", u, buf[u]);
> + }
> + }
> +
> +
> + return count;
> +}
> +
> +/* Write to IIC...
> + * addr = address byte, with r/w flag already set
> + */
> +static int
> +cpm_iic_write(struct i2c_algo_8260_data *cpm, u_char abyte, char
> *buf,int count)
> +{
> + volatile cpm2_map_t *immap = (cpm2_map_t *)CPM_MAP_ADDR;
> + volatile iic_t *iip = cpm->iip;
> + volatile i2c_cpm2_t *i2c = cpm->i2c;
> + volatile cbd_t *tbdf;
> + u_char *tb;
> + unsigned long flags;
> +
> + tb = cpm->temp;
> + tb = (u_char *)(((uint)tb + 15) & ~15);
> + *tb = abyte; /* Device address byte w/rw flag */
> +
> + dma_cache_wback_inv (tb, 1);
> + dma_cache_wback_inv (buf, count);
> +
> + if (cpm_debug) printk(KERN_DEBUG "cpm_iic_write(abyte=0x%x)\n",
> abyte);
> + if (cpm_debug) printk(KERN_DEBUG "buf[0] = 0x%x, buf[1] = 0x%x
> \n", buf[0], buf[1]);
> +
> + /* set up 2 descriptors */
> + tbdf = (cbd_t *)&immap->im_dprambase[iip->iic_tbase];
> +
> + tbdf[0].cbd_bufaddr = __pa(tb);
> + tbdf[0].cbd_datlen = 1;
> + tbdf[0].cbd_sc = BD_SC_READY | BD_IIC_START;
> +
> + tbdf[1].cbd_bufaddr = __pa(buf);
> + tbdf[1].cbd_datlen = count;
> + tbdf[1].cbd_sc = BD_SC_READY | BD_SC_INTRPT | BD_SC_LAST |
> BD_SC_WRAP;
> +
> + /* Chip bug, set enable here */
> + local_irq_save(flags);;
> + i2c->i2c_i2cmr = 0x13; /* Enable some interupts */
> + i2c->i2c_i2cer = 0xff;
> + i2c->i2c_i2mod |= 1; /* Enable */
> + i2c->i2c_i2com = 0x81; /* Start master */
> +
> + /* Wait for IIC transfer */
> + interruptible_sleep_on(&iic_wait);
> + local_irq_restore(flags);
> + if (signal_pending(current))
> + return -EIO;
> +
> + if (cpm_debug) {
> + printk(KERN_DEBUG "tx0 sc %04x, tx1 sc %04x\n",
> + tbdf[0].cbd_sc, tbdf[1].cbd_sc);
> + }
> +
> + if (tbdf->cbd_sc & BD_SC_NAK) {
> + printk(KERN_INFO "IIC write; no ack\n");
> + return 0;
> + }
> +
> + if (tbdf->cbd_sc & BD_SC_READY) {
> + printk(KERN_INFO "IIC write; complete but tbuf ready\n");
> + return 0;
> + }
> +
> + return count;
> +}
> +
> +#if 0
> +/* See if an IIC address exists..
> + * addr = 7 bit address, unshifted
> + */
> +static int
> +cpm_iic_tryaddress(struct i2c_algo_8260_data *cpm, int addr)
> +{
> + volatile cpm2_map_t *immap = (cpm2_map_t *)CPM_MAP_ADDR;
> + volatile iic_t *iip = cpm->iip;
> + volatile i2c_cpm2_t *i2c = cpm->i2c;
> + volatile cbd_t *tbdf, *rbdf;
> + u_char *tb;
> + unsigned long flags, len;
> +
> + if (cpm_debug > 1)
> + printk(KERN_DEBUG "cpm_iic_tryaddress(cpm=%p,addr=%d)\n", cpm,
> addr);
> +
> + if (cpm_debug && addr == 0) {
> + printk(KERN_DEBUG "iip %p, dp_addr 0x%x\n", cpm->iip, cpm-
> >dp_addr);
> + printk(KERN_DEBUG "iic_tbase %d, r_tbase %d\n", iip->iic_tbase,
> r_tbase);
> + }
> +
> + tbdf = (cbd_t *)&immap->im_dprambase[iip->iic_tbase];
> + rbdf = (cbd_t *)&immap->im_dprambase[iip->iic_rbase];
> +
> + tb = cpm->temp;
> + tb = (u_char *)(((uint)tb + 15) & ~15);
> +
> + /* do a simple read */
> + tb[0] = (addr << 1) | 1; /* device address (+ read) */
> + len = 2;
> +
> + dma_cache_wback_inv (tb, 1);
> +
> + tbdf->cbd_bufaddr = __pa(tb);
> + tbdf->cbd_datlen = len;
> + tbdf->cbd_sc =
> + BD_SC_READY | BD_SC_INTRPT | BD_SC_LAST |
> + BD_SC_WRAP | BD_IIC_START;
> +
> + rbdf->cbd_datlen = 0;
> + rbdf->cbd_bufaddr = __pa(tb+2);
> + rbdf->cbd_sc = BD_SC_EMPTY | BD_SC_WRAP;
> +
> + local_irq_save(flags);
> + i2c->i2c_i2cmr = 0x13; /* Enable some interupts */
> + i2c->i2c_i2cer = 0xff;
> + i2c->i2c_i2mod |= 1; /* Enable */
> + i2c->i2c_i2com = 0x81; /* Start master */
> +
> + if (cpm_debug > 1) printk(KERN_DEBUG "about to sleep\n");
> +
> + /* wait for IIC transfer */
> + interruptible_sleep_on(&iic_wait);
> + local_irq_restore(flags);
> + if (signal_pending(current))
> + return -EIO;
> +
> + if (cpm_debug > 1) printk(KERN_DEBUG "back from sleep\n");
> +
> + if (tbdf->cbd_sc & BD_SC_NAK) {
> + if (cpm_debug > 1) printk(KERN_DEBUG "IIC try; no ack\n");
> + return 0;
> + }
> +
> + if (tbdf->cbd_sc & BD_SC_READY) {
> + printk(KERN_INFO "IIC try; complete but tbuf ready\n");
> + }
> +
> + return 1;
> +}
> +#endif
> +
> +static int mpc8260_xfer(struct i2c_adapter *adap, struct i2c_msg
> *msgs, int num)
> +{
> + struct i2c_msg *pmsg;
> + int i;
> + int ret = 0;
> + struct mpc_i2c *mpc_i2c = i2c_get_adapdata(adap);
> + struct i2c_algo_8260_data *data = mpc_i2c->data;
> + u_char addr;
> +
> + for (i = 0; i < num; i++) {
> + pmsg = &msgs[i];
> +
> + if (cpm_debug)
> + printk(KERN_DEBUG "i2c-algo-8260.o: "
> + "#%d addr=0x%x flags=0x%x len=%d\n",
> + i, pmsg->addr, pmsg->flags, pmsg->len);
> +
> + addr = pmsg->addr << 1;
> + if (pmsg->flags & I2C_M_RD )
> + addr |= 1;
> + if (pmsg->flags & I2C_M_REV_DIR_ADDR )
> + addr ^= 1;
> +
> + if (!(pmsg->flags & I2C_M_NOSTART)) {
> + }
> + if (pmsg->flags & I2C_M_RD ) {
> + /* read bytes into buffer*/
> + ret = cpm_iic_read(data, addr, pmsg->buf, pmsg->len);
> + if (cpm_debug)
> + printk(KERN_DEBUG "i2c-algo-8260.o: read %d bytes\n", ret);
> + if (ret < pmsg->len ) {
> + return (ret<0)? ret : -EREMOTEIO;
> + }
> + } else {
> + /* write bytes from buffer */
> + ret = cpm_iic_write(data, addr, pmsg->buf, pmsg->len);
> + if (cpm_debug)
> + printk(KERN_DEBUG "i2c-algo-8260.o: wrote %d\n", ret);
> + if (ret < pmsg->len ) {
> + return (ret<0) ? ret : -EREMOTEIO;
> + }
> + }
> + }
> + return (ret < 0) ? ret : num;
> +}
> +
> +static u32 mpc8260_functionality(struct i2c_adapter *adap)
> +{
> + return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_10BIT_ADDR |
> + I2C_FUNC_PROTOCOL_MANGLING;
> +}
> +
> +static struct i2c_algorithm mpc8260_algo = {
> + .master_xfer = mpc8260_xfer,
> + .functionality = mpc8260_functionality,
> +};
> +
> +static struct i2c_adapter mpc8260_ops = {
> + .owner = THIS_MODULE,
> + .name = "MPC 8260 adapter",
> + .id = I2C_HW_MPC8260,
> + .algo = &mpc8260_algo,
> + .class = I2C_CLASS_HWMON,
> + .timeout = 1,
> + .retries = 1
> +};
> +
> +static int fsl_i2c_probe(struct device *device)
> +{
> + int result = 0;
> + struct mpc_i2c *i2c;
> + struct platform_device *pdev = to_platform_device(device);
> + struct fsl_i2c_platform_data *pdata;
> +
> + pdata = (struct fsl_i2c_platform_data *) pdev->dev.platform_data;
> +
> + if (!(i2c = kmalloc(sizeof(*i2c), GFP_KERNEL))) {
> + return -ENOMEM;
> + }
> + memset(i2c, 0, sizeof(*i2c));
> +
> + i2c->data = &pm82x_data;
> + /* CPM Plattform initialisation */
> + mpc8260_iic_init (i2c->data);
> + /* CPM init */
> + cpm_iic_init (i2c->data);
> + i2c->irq = platform_get_irq(pdev, 0);
> +
> + if (i2c->irq != 0) {
> + if ((result = request_irq(i2c->irq, mpc8260_i2c_isr,
> + SA_SHIRQ, "i2c-mpc", i2c)) < 0) {
> + printk(KERN_ERR
> + "i2c-mpc - failed to attach interrupt\n");
> + goto fail_irq;
> + }
> + }
> + dev_set_drvdata(device, i2c);
> +
> + i2c->adap = mpc8260_ops;
> + i2c_set_adapdata(&i2c->adap, i2c);
> + i2c->adap.dev.parent = &pdev->dev;
> + if ((result = i2c_add_adapter(&i2c->adap)) < 0) {
> + printk(KERN_ERR "i2c-mpc - failed to add adapter\n");
> + goto fail_add;
> + }
> +
> + return result;
> +
> + fail_add:
> + if (i2c->irq != 0)
> + free_irq(i2c->irq, NULL);
> + fail_irq:
> + kfree(i2c);
> + return result;
> +};
> +
> +static int fsl_i2c_remove(struct device *device)
> +{
> + struct mpc_i2c *i2c = dev_get_drvdata(device);
> +
> + /* hier noich irgendwo das dpalloc wieder freigeben */
> + cpm_dpfree (i2c->data->dp_addr);
> +
> + i2c_del_adapter(&i2c->adap);
> + dev_set_drvdata(device, NULL);
> +
> + if (i2c->irq != 0)
> + free_irq(i2c->irq, i2c);
> +
> + kfree(i2c);
> + return 0;
> +};
> +
> +/* Structure for a device driver */
> +static struct device_driver fsl_i2c_driver = {
> + .name = "fsl-cpm-i2c",
> + .bus = &platform_bus_type,
> + .probe = fsl_i2c_probe,
> + .remove = fsl_i2c_remove,
> +};
> +
> +static int __init fsl_i2c_init(void)
> +{
> + return driver_register(&fsl_i2c_driver);
> +}
> +
> +static void __exit fsl_i2c_exit(void)
> +{
> + driver_unregister(&fsl_i2c_driver);
> +}
> +
> +module_init(fsl_i2c_init);
> +module_exit(fsl_i2c_exit);
> +
> +MODULE_AUTHOR("Heiko Schocher <hs@denx.de>");
> +MODULE_DESCRIPTION
> + ("I2C-Bus adapter for MPC8260 processors");
> +MODULE_LICENSE("GPL");
> diff --git a/include/linux/i2c-algo-8260.h b/include/linux/i2c-
> algo-8260.h
> new file mode 100644
> index 0000000..73b3e33
> --- /dev/null
> +++ b/include/linux/i2c-algo-8260.h
> @@ -0,0 +1,26 @@
> +/*
> ----------------------------------------------------------------------
> --- */
> +/* i2c-algo-8260.h i2c driver algorithms for MPX8260 CPM */
> +/*
> ----------------------------------------------------------------------
> --- */
> +
> +/* $Id$ */
> +
> +#ifndef I2C_ALGO_8260_H
> +#define I2C_ALGO_8260_H 1
> +
> +#include <linux/i2c.h>
> +
> +struct i2c_algo_8260_data {
> + uint dp_addr;
> + int reloc;
> + volatile i2c_cpm2_t *i2c;
> + volatile iic_t *iip;
> + volatile cpm_cpm2_t *cp;
> +
> + int (*setisr) (int irq,
> + void (*func)(int, void (*)(void *), void *),
> + void *data);
> +
> + u_char temp[513];
> +};
> +
> +#endif /* I2C_ALGO_8260_H */
> diff --git a/include/linux/i2c-id.h b/include/linux/i2c-id.h
> index 1543daa..35b0a57 100644
> --- a/include/linux/i2c-id.h
> +++ b/include/linux/i2c-id.h
> @@ -223,6 +223,9 @@
> /* --- PowerPC on-chip adapters */
> #define I2C_HW_OCP 0x120000 /* IBM on-chip I2C adapter */
>
> +/* --- MPC8260 PowerPC adapters */
> +#define I2C_HW_MPC8260 0x100002 /* MPC8260 I2C adapter */
> +
> /* --- Broadcom SiByte adapters */
> #define I2C_HW_SIBYTE 0x150000
>
>
>
> !-------------------------------------------------------------flip-
>
>
>
> Signed-off-by: Heiko Schocher <hs@denx.de>
>
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@ozlabs.org
> https://ozlabs.org/mailman/listinfo/linuxppc-dev
^ permalink raw reply
* [PATCH] powerpc: convert macio_asic to use prom_parse
From: Benjamin Herrenschmidt @ 2005-11-23 6:59 UTC (permalink / raw)
To: Paul Mackerras; +Cc: linuxppc64-dev, linuxppc-dev list
Converts the macio_asic core to use the new OF parsing routines instead
of relying on the pre-parsed values in struct device_node.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Index: linux-serialfix/drivers/macintosh/macio_asic.c
===================================================================
--- linux-serialfix.orig/drivers/macintosh/macio_asic.c 2005-11-23 16:54:11.000000000 +1100
+++ linux-serialfix/drivers/macintosh/macio_asic.c 2005-11-23 16:54:26.000000000 +1100
@@ -3,6 +3,13 @@
* a MacIO ASIC. Interface to new driver model mostly
* stolen from the PCI version.
*
+ * Copyright (C) 2005 Ben. Herrenschmidt (benh@kernel.crashing.org)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
* TODO:
*
* - Don't probe below media bay by default, but instead provide
@@ -218,12 +225,14 @@ postcore_initcall(macio_bus_driver_init)
/**
- * macio_release_dev - free a macio device structure when all users of it are finished.
+ * macio_release_dev - free a macio device structure when all users of it are
+ * finished.
* @dev: device that's been disconnected
*
- * Will be called only by the device core when all users of this macio device are
- * done. This currently means never as we don't hot remove any macio device yet,
- * though that will happen with mediabay based devices in a later implementation.
+ * Will be called only by the device core when all users of this macio device
+ * are done. This currently means never as we don't hot remove any macio
+ * device yet, though that will happen with mediabay based devices in a later
+ * implementation.
*/
static void macio_release_dev(struct device *dev)
{
@@ -242,7 +251,8 @@ static void macio_release_dev(struct dev
* If this routine returns non-null, then the resource is completely
* skipped.
*/
-static int macio_resource_quirks(struct device_node *np, struct resource *res, int index)
+static int macio_resource_quirks(struct device_node *np, struct resource *res,
+ int index)
{
if (res->flags & IORESOURCE_MEM) {
/* Grand Central has too large resource 0 on some machines */
@@ -258,12 +268,15 @@ static int macio_resource_quirks(struct
np->addrs[index].size = 0x100;
res->end = res->start + 0xff;
}
- /* ESCC parent eats child resources. We could have added a level of hierarchy,
- * but I don't really feel the need for it */
+ /* ESCC parent eats child resources. We could have added a
+ * level of hierarchy, but I don't really feel the need
+ * for it
+ */
if (!strcmp(np->name, "escc"))
return 1;
/* ESCC has bogus resources >= 3 */
- if (index >= 3 && !(strcmp(np->name, "ch-a") && strcmp(np->name, "ch-b")))
+ if (index >= 3 && !(strcmp(np->name, "ch-a") &&
+ strcmp(np->name, "ch-b")))
return 1;
/* Media bay has too many resources, keep only first one */
if (index > 0 && !strcmp(np->name, "media-bay"))
@@ -285,6 +298,71 @@ static int macio_resource_quirks(struct
}
+static void macio_setup_interrupts(struct macio_dev *dev)
+{
+ struct device_node *np = dev->ofdev.node;
+ int i,j;
+
+ /* For now, we use pre-parsed entries in the device-tree for
+ * interrupt routing and addresses, but we should change that
+ * to dynamically parsed entries and so get rid of most of the
+ * clutter in struct device_node
+ */
+ for (i = j = 0; i < np->n_intrs; i++) {
+ struct resource *res = &dev->interrupt[j];
+
+ if (j >= MACIO_DEV_COUNT_IRQS)
+ break;
+ res->start = np->intrs[i].line;
+ res->flags = IORESOURCE_IO;
+ if (np->intrs[j].sense)
+ res->flags |= IORESOURCE_IRQ_LOWLEVEL;
+ else
+ res->flags |= IORESOURCE_IRQ_HIGHEDGE;
+ res->name = dev->ofdev.dev.bus_id;
+ if (macio_resource_quirks(np, res, i))
+ memset(res, 0, sizeof(struct resource));
+ else
+ j++;
+ }
+ dev->n_interrupts = j;
+}
+
+static void macio_setup_resources(struct macio_dev *dev,
+ struct resource *parent_res)
+{
+ struct device_node *np = dev->ofdev.node;
+ u32 *addr;
+ u64 size;
+ int index;
+
+ for (index = 0; (addr = of_get_address(np, index, &size)) != NULL;
+ index++) {
+ struct resource *res = &dev->resource[index];
+ if (index >= MACIO_DEV_COUNT_RESOURCES)
+ break;
+ res->start = of_translate_address(np, addr);
+ res->end = res->start + (unsigned long)size - 1;
+ res->flags = IORESOURCE_MEM;
+ res->name = dev->ofdev.dev.bus_id;
+
+ if (macio_resource_quirks(np, res, index)) {
+ memset(res, 0, sizeof(struct resource));
+ continue;
+ }
+ /* Currently, we consider failure as harmless, this may
+ * change in the future, once I've found all the device
+ * tree bugs in older machines & worked around them
+ */
+ if (insert_resource(parent_res, res)) {
+ printk(KERN_WARNING "Can't request resource "
+ "%d for MacIO device %s\n",
+ index, dev->ofdev.dev.bus_id);
+ }
+ }
+ dev->n_resources = index;
+}
+
/**
* macio_add_one_device - Add one device from OF node to the device tree
* @chip: pointer to the macio_chip holding the device
@@ -294,12 +372,13 @@ static int macio_resource_quirks(struct
* When media-bay is changed to hotswap drivers, this function will
* be exposed to the bay driver some way...
*/
-static struct macio_dev * macio_add_one_device(struct macio_chip *chip, struct device *parent,
- struct device_node *np, struct macio_dev *in_bay,
+static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
+ struct device *parent,
+ struct device_node *np,
+ struct macio_dev *in_bay,
struct resource *parent_res)
{
struct macio_dev *dev;
- int i, j;
u32 *reg;
if (np == NULL)
@@ -326,7 +405,8 @@ static struct macio_dev * macio_add_one_
/* MacIO itself has a different reg, we use it's PCI base */
if (np == chip->of_node) {
- sprintf(dev->ofdev.dev.bus_id, "%1d.%08lx:%.*s", chip->lbus.index,
+ sprintf(dev->ofdev.dev.bus_id, "%1d.%08lx:%.*s",
+ chip->lbus.index,
#ifdef CONFIG_PCI
pci_resource_start(chip->lbus.pdev, 0),
#else
@@ -335,57 +415,16 @@ static struct macio_dev * macio_add_one_
MAX_NODE_NAME_SIZE, np->name);
} else {
reg = (u32 *)get_property(np, "reg", NULL);
- sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s", chip->lbus.index,
+ sprintf(dev->ofdev.dev.bus_id, "%1d.%08x:%.*s",
+ chip->lbus.index,
reg ? *reg : 0, MAX_NODE_NAME_SIZE, np->name);
}
- /* For now, we use pre-parsed entries in the device-tree for
- * interrupt routing and addresses, but we should change that
- * to dynamically parsed entries and so get rid of most of the
- * clutter in struct device_node
- */
- for (i = j = 0; i < np->n_intrs; i++) {
- struct resource *res = &dev->interrupt[j];
-
- if (j >= MACIO_DEV_COUNT_IRQS)
- break;
- res->start = np->intrs[i].line;
- res->flags = IORESOURCE_IO;
- if (np->intrs[j].sense)
- res->flags |= IORESOURCE_IRQ_LOWLEVEL;
- else
- res->flags |= IORESOURCE_IRQ_HIGHEDGE;
- res->name = dev->ofdev.dev.bus_id;
- if (macio_resource_quirks(np, res, i))
- memset(res, 0, sizeof(struct resource));
- else
- j++;
- }
- dev->n_interrupts = j;
- for (i = j = 0; i < np->n_addrs; i++) {
- struct resource *res = &dev->resource[j];
-
- if (j >= MACIO_DEV_COUNT_RESOURCES)
- break;
- res->start = np->addrs[i].address;
- res->end = np->addrs[i].address + np->addrs[i].size - 1;
- res->flags = IORESOURCE_MEM;
- res->name = dev->ofdev.dev.bus_id;
- if (macio_resource_quirks(np, res, i))
- memset(res, 0, sizeof(struct resource));
- else {
- j++;
- /* Currently, we consider failure as harmless, this may
- * change in the future, once I've found all the device
- * tree bugs in older machines & worked around them
- */
- if (insert_resource(parent_res, res))
- printk(KERN_WARNING "Can't request resource %d for MacIO"
- " device %s\n", i, dev->ofdev.dev.bus_id);
- }
- }
- dev->n_resources = j;
+ /* Setup interrupts & resources */
+ macio_setup_interrupts(dev);
+ macio_setup_resources(dev, parent_res);
+ /* Register with core */
if (of_device_register(&dev->ofdev) != 0) {
printk(KERN_DEBUG"macio: device registration error for %s!\n",
dev->ofdev.dev.bus_id);
@@ -442,36 +481,42 @@ static void macio_pci_add_devices(struct
/* First scan 1st level */
for (np = NULL; (np = of_get_next_child(pnode, np)) != NULL;) {
- if (!macio_skip_device(np)) {
- of_node_get(np);
- mdev = macio_add_one_device(chip, &rdev->ofdev.dev, np, NULL, root_res);
- if (mdev == NULL)
- of_node_put(np);
- else if (strncmp(np->name, "media-bay", 9) == 0)
- mbdev = mdev;
- else if (strncmp(np->name, "escc", 4) == 0)
- sdev = mdev;
- }
+ if (macio_skip_device(np))
+ continue;
+ of_node_get(np);
+ mdev = macio_add_one_device(chip, &rdev->ofdev.dev, np, NULL,
+ root_res);
+ if (mdev == NULL)
+ of_node_put(np);
+ else if (strncmp(np->name, "media-bay", 9) == 0)
+ mbdev = mdev;
+ else if (strncmp(np->name, "escc", 4) == 0)
+ sdev = mdev;
}
/* Add media bay devices if any */
if (mbdev)
- for (np = NULL; (np = of_get_next_child(mbdev->ofdev.node, np)) != NULL;)
- if (!macio_skip_device(np)) {
- of_node_get(np);
- if (macio_add_one_device(chip, &mbdev->ofdev.dev, np, mbdev,
- root_res) == NULL)
- of_node_put(np);
- }
+ for (np = NULL; (np = of_get_next_child(mbdev->ofdev.node, np))
+ != NULL;) {
+ if (macio_skip_device(np))
+ continue;
+ of_node_get(np);
+ if (macio_add_one_device(chip, &mbdev->ofdev.dev, np,
+ mbdev, root_res) == NULL)
+ of_node_put(np);
+ }
+
/* Add serial ports if any */
if (sdev) {
- for (np = NULL; (np = of_get_next_child(sdev->ofdev.node, np)) != NULL;)
- if (!macio_skip_device(np)) {
- of_node_get(np);
- if (macio_add_one_device(chip, &sdev->ofdev.dev, np, NULL,
- root_res) == NULL)
- of_node_put(np);
- }
+ for (np = NULL; (np = of_get_next_child(sdev->ofdev.node, np))
+ != NULL;) {
+ if (macio_skip_device(np))
+ continue;
+ of_node_get(np);
+ if (macio_add_one_device(chip, &sdev->ofdev.dev, np,
+ NULL, root_res) == NULL)
+ of_node_put(np);
+ }
}
}
@@ -519,7 +564,8 @@ void macio_unregister_driver(struct maci
* Returns 0 on success, or %EBUSY on error. A warning
* message is also printed on failure.
*/
-int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name)
+int macio_request_resource(struct macio_dev *dev, int resource_no,
+ const char *name)
{
if (macio_resource_len(dev, resource_no) == 0)
return 0;
@@ -606,20 +652,20 @@ static int __devinit macio_pci_probe(str
if (ent->vendor != PCI_VENDOR_ID_APPLE)
return -ENODEV;
- /* Note regarding refcounting: We assume pci_device_to_OF_node() is ported
- * to new OF APIs and returns a node with refcount incremented. This isn't
- * the case today, but on the other hand ppc32 doesn't do refcounting. This
- * will have to be fixed when going to ppc64. --BenH.
+ /* Note regarding refcounting: We assume pci_device_to_OF_node() is
+ * ported to new OF APIs and returns a node with refcount incremented.
*/
np = pci_device_to_OF_node(pdev);
if (np == NULL)
return -ENODEV;
- /* This assumption is wrong, fix that here for now until I fix the arch */
+ /* The above assumption is wrong !!!
+ * fix that here for now until I fix the arch code
+ */
of_node_get(np);
- /* We also assume that pmac_feature will have done a get() on nodes stored
- * in the macio chips array
+ /* We also assume that pmac_feature will have done a get() on nodes
+ * stored in the macio chips array
*/
chip = macio_find(np, macio_unknown);
of_node_put(np);
@@ -639,9 +685,9 @@ static int __devinit macio_pci_probe(str
/*
* HACK ALERT: The WallStreet PowerBook and some OHare based machines
- * have 2 macio ASICs. I must probe the "main" one first or IDE ordering
- * will be incorrect. So I put on "hold" the second one since it seem to
- * appear first on PCI
+ * have 2 macio ASICs. I must probe the "main" one first or IDE
+ * ordering will be incorrect. So I put on "hold" the second one since
+ * it seem to appear first on PCI
*/
if (chip->type == macio_gatwick || chip->type == macio_ohareII)
if (macio_chips[0].lbus.pdev == NULL) {
^ permalink raw reply
* [PATCH] powerpc: Add back support for booting from BootX (#2)
From: Benjamin Herrenschmidt @ 2005-11-23 6:58 UTC (permalink / raw)
To: Paul Mackerras; +Cc: linuxppc64-dev, linuxppc-dev list
ARCH=powerpc couldn't boot from BootX as it uses a "different" way of
getting in the kernel. This patch adds the necessary trampolines,
creating a flattened device-tree from the tree passed from MacOS, and
initializing the btext engine early for really-early debugging.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Index: linux-serialfix/arch/powerpc/platforms/powermac/bootx_init.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-serialfix/arch/powerpc/platforms/powermac/bootx_init.c 2005-11-23 16:54:26.000000000 +1100
@@ -0,0 +1,547 @@
+/*
+ * Early boot support code for BootX bootloader
+ *
+ * Copyright (C) 2005 Ben. Herrenschmidt (benh@kernel.crashing.org)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/version.h>
+#include <asm/sections.h>
+#include <asm/prom.h>
+#include <asm/page.h>
+#include <asm/bootx.h>
+#include <asm/bootinfo.h>
+#include <asm/btext.h>
+#include <asm/io.h>
+
+#undef DEBUG
+#define SET_BOOT_BAT
+
+#ifdef DEBUG
+#define DBG(fmt...) do { bootx_printf(fmt); } while(0)
+#else
+#define DBG(fmt...) do { } while(0)
+#endif
+
+extern void __start(unsigned long r3, unsigned long r4, unsigned long r5);
+
+static unsigned long __initdata bootx_dt_strbase;
+static unsigned long __initdata bootx_dt_strend;
+static unsigned long __initdata bootx_node_chosen;
+static boot_infos_t * __initdata bootx_info;
+static char __initdata bootx_disp_path[256];
+
+/* Is boot-info compatible ? */
+#define BOOT_INFO_IS_COMPATIBLE(bi) \
+ ((bi)->compatible_version <= BOOT_INFO_VERSION)
+#define BOOT_INFO_IS_V2_COMPATIBLE(bi) ((bi)->version >= 2)
+#define BOOT_INFO_IS_V4_COMPATIBLE(bi) ((bi)->version >= 4)
+
+#ifdef CONFIG_BOOTX_TEXT
+static void __init bootx_printf(const char *format, ...)
+{
+ const char *p, *q, *s;
+ va_list args;
+ unsigned long v;
+
+ va_start(args, format);
+ for (p = format; *p != 0; p = q) {
+ for (q = p; *q != 0 && *q != '\n' && *q != '%'; ++q)
+ ;
+ if (q > p)
+ btext_drawtext(p, q - p);
+ if (*q == 0)
+ break;
+ if (*q == '\n') {
+ ++q;
+ btext_flushline();
+ btext_drawstring("\r\n");
+ btext_flushline();
+ continue;
+ }
+ ++q;
+ if (*q == 0)
+ break;
+ switch (*q) {
+ case 's':
+ ++q;
+ s = va_arg(args, const char *);
+ if (s == NULL)
+ s = "<NULL>";
+ btext_drawstring(s);
+ break;
+ case 'x':
+ ++q;
+ v = va_arg(args, unsigned long);
+ btext_drawhex(v);
+ break;
+ }
+ }
+}
+#else /* CONFIG_BOOTX_TEXT */
+static void __init bootx_printf(const char *format, ...) {}
+#endif /* CONFIG_BOOTX_TEXT */
+
+static void * __init bootx_early_getprop(unsigned long base,
+ unsigned long node,
+ char *prop)
+{
+ struct bootx_dt_node *np = (struct bootx_dt_node *)(base + node);
+ u32 *ppp = &np->properties;
+
+ while(*ppp) {
+ struct bootx_dt_prop *pp =
+ (struct bootx_dt_prop *)(base + *ppp);
+
+ if (strcmp((char *)((unsigned long)pp->name + base),
+ prop) == 0) {
+ return (void *)((unsigned long)pp->value + base);
+ }
+ ppp = &pp->next;
+ }
+ return NULL;
+}
+
+#define dt_push_token(token, mem) \
+ do { \
+ *(mem) = _ALIGN_UP(*(mem),4); \
+ *((u32 *)*(mem)) = token; \
+ *(mem) += 4; \
+ } while(0)
+
+static unsigned long __init bootx_dt_find_string(char *str)
+{
+ char *s, *os;
+
+ s = os = (char *)bootx_dt_strbase;
+ s += 4;
+ while (s < (char *)bootx_dt_strend) {
+ if (strcmp(s, str) == 0)
+ return s - os;
+ s += strlen(s) + 1;
+ }
+ return 0;
+}
+
+static void __init bootx_dt_add_prop(char *name, void *data, int size,
+ unsigned long *mem_end)
+{
+ unsigned long soff = bootx_dt_find_string(name);
+ if (data == NULL)
+ size = 0;
+ if (soff == 0) {
+ bootx_printf("WARNING: Can't find string index for <%s>\n",
+ name);
+ return;
+ }
+ if (size > 0x20000) {
+ bootx_printf("WARNING: ignoring large property ");
+ bootx_printf("%s length 0x%x\n", name, size);
+ return;
+ }
+ dt_push_token(OF_DT_PROP, mem_end);
+ dt_push_token(size, mem_end);
+ dt_push_token(soff, mem_end);
+
+ /* push property content */
+ if (size && data) {
+ memcpy((void *)*mem_end, data, size);
+ *mem_end = _ALIGN_UP(*mem_end + size, 4);
+ }
+}
+
+static void __init bootx_add_chosen_props(unsigned long base,
+ unsigned long *mem_end)
+{
+ u32 val = _MACH_Pmac;
+
+ bootx_dt_add_prop("linux,platform", &val, 4, mem_end);
+
+ if (bootx_info->kernelParamsOffset) {
+ char *args = (char *)((unsigned long)bootx_info) +
+ bootx_info->kernelParamsOffset;
+ bootx_dt_add_prop("bootargs", args, strlen(args) + 1, mem_end);
+ }
+ if (bootx_info->ramDisk) {
+ val = ((unsigned long)bootx_info) + bootx_info->ramDisk;
+ bootx_dt_add_prop("linux,initrd-start", &val, 4, mem_end);
+ val += bootx_info->ramDiskSize;
+ bootx_dt_add_prop("linux,initrd-end", &val, 4, mem_end);
+ }
+ if (strlen(bootx_disp_path))
+ bootx_dt_add_prop("linux,stdout-path", bootx_disp_path,
+ strlen(bootx_disp_path) + 1, mem_end);
+}
+
+static void __init bootx_add_display_props(unsigned long base,
+ unsigned long *mem_end)
+{
+ bootx_dt_add_prop("linux,boot-display", NULL, 0, mem_end);
+ bootx_dt_add_prop("linux,opened", NULL, 0, mem_end);
+}
+
+static void __init bootx_dt_add_string(char *s, unsigned long *mem_end)
+{
+ unsigned int l = strlen(s) + 1;
+ memcpy((void *)*mem_end, s, l);
+ bootx_dt_strend = *mem_end = *mem_end + l;
+}
+
+static void __init bootx_scan_dt_build_strings(unsigned long base,
+ unsigned long node,
+ unsigned long *mem_end)
+{
+ struct bootx_dt_node *np = (struct bootx_dt_node *)(base + node);
+ u32 *cpp, *ppp = &np->properties;
+ unsigned long soff;
+ char *namep;
+
+ /* Keep refs to known nodes */
+ namep = np->full_name ? (char *)(base + np->full_name) : NULL;
+ if (namep == NULL) {
+ bootx_printf("Node without a full name !\n");
+ namep = "";
+ }
+ DBG("* strings: %s\n", namep);
+
+ if (!strcmp(namep, "/chosen")) {
+ DBG(" detected /chosen ! adding properties names !\n");
+ bootx_dt_add_string("linux,platform", mem_end);
+ bootx_dt_add_string("linux,stdout-path", mem_end);
+ bootx_dt_add_string("linux,initrd-start", mem_end);
+ bootx_dt_add_string("linux,initrd-end", mem_end);
+ bootx_dt_add_string("bootargs", mem_end);
+ bootx_node_chosen = node;
+ }
+ if (node == bootx_info->dispDeviceRegEntryOffset) {
+ DBG(" detected display ! adding properties names !\n");
+ bootx_dt_add_string("linux,boot-display", mem_end);
+ bootx_dt_add_string("linux,opened", mem_end);
+ strncpy(bootx_disp_path, namep, 255);
+ }
+
+ /* get and store all property names */
+ while (*ppp) {
+ struct bootx_dt_prop *pp =
+ (struct bootx_dt_prop *)(base + *ppp);
+
+ namep = pp->name ? (char *)(base + pp->name) : NULL;
+ if (namep == NULL || strcmp(namep, "name") == 0)
+ goto next;
+ /* get/create string entry */
+ soff = bootx_dt_find_string(namep);
+ if (soff == 0)
+ bootx_dt_add_string(namep, mem_end);
+ next:
+ ppp = &pp->next;
+ }
+
+ /* do all our children */
+ cpp = &np->child;
+ while(*cpp) {
+ np = (struct bootx_dt_node *)(base + *cpp);
+ bootx_scan_dt_build_strings(base, *cpp, mem_end);
+ cpp = &np->sibling;
+ }
+}
+
+static void __init bootx_scan_dt_build_struct(unsigned long base,
+ unsigned long node,
+ unsigned long *mem_end)
+{
+ struct bootx_dt_node *np = (struct bootx_dt_node *)(base + node);
+ u32 *cpp, *ppp = &np->properties;
+ char *namep, *p, *ep, *lp;
+ int l;
+
+ dt_push_token(OF_DT_BEGIN_NODE, mem_end);
+
+ /* get the node's full name */
+ namep = np->full_name ? (char *)(base + np->full_name) : NULL;
+ if (namep == NULL)
+ namep = "";
+ l = strlen(namep);
+
+ DBG("* struct: %s\n", namep);
+
+ /* Fixup an Apple bug where they have bogus \0 chars in the
+ * middle of the path in some properties, and extract
+ * the unit name (everything after the last '/').
+ */
+ memcpy((void *)*mem_end, namep, l + 1);
+ namep = (char *)*mem_end;
+ for (lp = p = namep, ep = namep + l; p < ep; p++) {
+ if (*p == '/')
+ lp = namep;
+ else if (*p != 0)
+ *lp++ = *p;
+ }
+ *lp = 0;
+ *mem_end = _ALIGN_UP((unsigned long)lp + 1, 4);
+
+ /* get and store all properties */
+ while (*ppp) {
+ struct bootx_dt_prop *pp =
+ (struct bootx_dt_prop *)(base + *ppp);
+
+ namep = pp->name ? (char *)(base + pp->name) : NULL;
+ /* Skip "name" */
+ if (namep == NULL || !strcmp(namep, "name"))
+ goto next;
+ /* Skip "bootargs" in /chosen too as we replace it */
+ if (node == bootx_node_chosen && !strcmp(namep, "bootargs"))
+ goto next;
+
+ /* push property head */
+ bootx_dt_add_prop(namep,
+ pp->value ? (void *)(base + pp->value): NULL,
+ pp->length, mem_end);
+ next:
+ ppp = &pp->next;
+ }
+
+ if (node == bootx_node_chosen)
+ bootx_add_chosen_props(base, mem_end);
+ if (node == bootx_info->dispDeviceRegEntryOffset)
+ bootx_add_display_props(base, mem_end);
+
+ /* do all our children */
+ cpp = &np->child;
+ while(*cpp) {
+ np = (struct bootx_dt_node *)(base + *cpp);
+ bootx_scan_dt_build_struct(base, *cpp, mem_end);
+ cpp = &np->sibling;
+ }
+
+ dt_push_token(OF_DT_END_NODE, mem_end);
+}
+
+static unsigned long __init bootx_flatten_dt(unsigned long start)
+{
+ boot_infos_t *bi = bootx_info;
+ unsigned long mem_start, mem_end;
+ struct boot_param_header *hdr;
+ unsigned long base;
+ u64 *rsvmap;
+
+ /* Start using memory after the big blob passed by BootX, get
+ * some space for the header
+ */
+ mem_start = mem_end = _ALIGN_UP(((unsigned long)bi) + start, 4);
+ DBG("Boot params header at: %x\n", mem_start);
+ hdr = (struct boot_param_header *)mem_start;
+ mem_end += sizeof(struct boot_param_header);
+ rsvmap = (u64 *)(_ALIGN_UP(mem_end, 8));
+ hdr->off_mem_rsvmap = ((unsigned long)rsvmap) - mem_start;
+ mem_end = ((unsigned long)rsvmap) + 8 * sizeof(u64);
+
+ /* Get base of tree */
+ base = ((unsigned long)bi) + bi->deviceTreeOffset;
+
+ /* Build string array */
+ DBG("Building string array at: %x\n", mem_end);
+ DBG("Device Tree Base=%x\n", base);
+ bootx_dt_strbase = mem_end;
+ mem_end += 4;
+ bootx_dt_strend = mem_end;
+ bootx_scan_dt_build_strings(base, 4, &mem_end);
+ hdr->off_dt_strings = bootx_dt_strbase - mem_start;
+ hdr->dt_strings_size = bootx_dt_strend - bootx_dt_strbase;
+
+ /* Build structure */
+ mem_end = _ALIGN(mem_end, 16);
+ DBG("Building device tree structure at: %x\n", mem_end);
+ hdr->off_dt_struct = mem_end - mem_start;
+ bootx_scan_dt_build_struct(base, 4, &mem_end);
+ dt_push_token(OF_DT_END, &mem_end);
+
+ /* Finish header */
+ hdr->boot_cpuid_phys = 0;
+ hdr->magic = OF_DT_HEADER;
+ hdr->totalsize = mem_end - mem_start;
+ hdr->version = OF_DT_VERSION;
+ /* Version 16 is not backward compatible */
+ hdr->last_comp_version = 0x10;
+
+ /* Reserve the whole thing and copy the reserve map in, we
+ * also bump mem_reserve_cnt to cause further reservations to
+ * fail since it's too late.
+ */
+ mem_end = _ALIGN(mem_end, PAGE_SIZE);
+ DBG("End of boot params: %x\n", mem_end);
+ rsvmap[0] = mem_start;
+ rsvmap[1] = mem_end;
+ rsvmap[2] = 0;
+ rsvmap[3] = 0;
+
+ return (unsigned long)hdr;
+}
+
+
+#ifdef CONFIG_BOOTX_TEXT
+static void __init btext_welcome(boot_infos_t *bi)
+{
+ unsigned long flags;
+ unsigned long pvr;
+
+ bootx_printf("Welcome to Linux, kernel " UTS_RELEASE "\n");
+ bootx_printf("\nlinked at : 0x%x", KERNELBASE);
+ bootx_printf("\nframe buffer at : 0x%x", bi->dispDeviceBase);
+ bootx_printf(" (phys), 0x%x", bi->logicalDisplayBase);
+ bootx_printf(" (log)");
+ bootx_printf("\nklimit : 0x%x",(unsigned long)klimit);
+ bootx_printf("\nboot_info at : 0x%x", bi);
+ __asm__ __volatile__ ("mfmsr %0" : "=r" (flags));
+ bootx_printf("\nMSR : 0x%x", flags);
+ __asm__ __volatile__ ("mfspr %0, 287" : "=r" (pvr));
+ bootx_printf("\nPVR : 0x%x", pvr);
+ pvr >>= 16;
+ if (pvr > 1) {
+ __asm__ __volatile__ ("mfspr %0, 1008" : "=r" (flags));
+ bootx_printf("\nHID0 : 0x%x", flags);
+ }
+ if (pvr == 8 || pvr == 12 || pvr == 0x800c) {
+ __asm__ __volatile__ ("mfspr %0, 1019" : "=r" (flags));
+ bootx_printf("\nICTC : 0x%x", flags);
+ }
+#ifdef DEBUG
+ bootx_printf("\n\n");
+ bootx_printf("bi->deviceTreeOffset : 0x%x\n",
+ bi->deviceTreeOffset);
+ bootx_printf("bi->deviceTreeSize : 0x%x\n",
+ bi->deviceTreeSize);
+#endif
+ bootx_printf("\n\n");
+}
+#endif /* CONFIG_BOOTX_TEXT */
+
+void __init bootx_init(unsigned long r3, unsigned long r4)
+{
+ boot_infos_t *bi = (boot_infos_t *) r4;
+ unsigned long hdr;
+ unsigned long space;
+ unsigned long ptr, x;
+ char *model;
+ unsigned long offset = reloc_offset();
+
+ reloc_got2(offset);
+
+ bootx_info = bi;
+
+ /* We haven't cleared any bss at this point, make sure
+ * what we need is initialized
+ */
+ bootx_dt_strbase = bootx_dt_strend = 0;
+ bootx_node_chosen = 0;
+ bootx_disp_path[0] = 0;
+
+ if (!BOOT_INFO_IS_V2_COMPATIBLE(bi))
+ bi->logicalDisplayBase = bi->dispDeviceBase;
+
+#ifdef CONFIG_BOOTX_TEXT
+ btext_setup_display(bi->dispDeviceRect[2] - bi->dispDeviceRect[0],
+ bi->dispDeviceRect[3] - bi->dispDeviceRect[1],
+ bi->dispDeviceDepth, bi->dispDeviceRowBytes,
+ (unsigned long)bi->logicalDisplayBase);
+ btext_clearscreen();
+ btext_flushscreen();
+#endif /* CONFIG_BOOTX_TEXT */
+
+ /*
+ * Test if boot-info is compatible. Done only in config
+ * CONFIG_BOOTX_TEXT since there is nothing much we can do
+ * with an incompatible version, except display a message
+ * and eventually hang the processor...
+ *
+ * I'll try to keep enough of boot-info compatible in the
+ * future to always allow display of this message;
+ */
+ if (!BOOT_INFO_IS_COMPATIBLE(bi)) {
+ bootx_printf(" !!! WARNING - Incompatible version"
+ " of BootX !!!\n\n\n");
+ for (;;)
+ ;
+ }
+ if (bi->architecture != BOOT_ARCH_PCI) {
+ bootx_printf(" !!! WARNING - Usupported machine"
+ " architecture !\n");
+ for (;;)
+ ;
+ }
+
+#ifdef CONFIG_BOOTX_TEXT
+ btext_welcome(bi);
+#endif
+ /* New BootX enters kernel with MMU off, i/os are not allowed
+ * here. This hack will have been done by the boostrap anyway.
+ */
+ if (bi->version < 4) {
+ /*
+ * XXX If this is an iMac, turn off the USB controller.
+ */
+ model = (char *) bootx_early_getprop(r4 + bi->deviceTreeOffset,
+ 4, "model");
+ if (model
+ && (strcmp(model, "iMac,1") == 0
+ || strcmp(model, "PowerMac1,1") == 0)) {
+ bootx_printf("iMac,1 detected, shutting down USB \n");
+ out_le32((unsigned *)0x80880008, 1); /* XXX */
+ }
+ }
+
+ /* Get a pointer that points above the device tree, args, ramdisk,
+ * etc... to use for generating the flattened tree
+ */
+ if (bi->version < 5) {
+ space = bi->deviceTreeOffset + bi->deviceTreeSize;
+ if (bi->ramDisk)
+ space = bi->ramDisk + bi->ramDiskSize;
+ } else
+ space = bi->totalParamsSize;
+
+ bootx_printf("Total space used by parameters & ramdisk: %x \n", space);
+
+ /* New BootX will have flushed all TLBs and enters kernel with
+ * MMU switched OFF, so this should not be useful anymore.
+ */
+ if (bi->version < 4) {
+ bootx_printf("Touching pages...\n");
+
+ /*
+ * Touch each page to make sure the PTEs for them
+ * are in the hash table - the aim is to try to avoid
+ * getting DSI exceptions while copying the kernel image.
+ */
+ for (ptr = ((unsigned long) &_stext) & PAGE_MASK;
+ ptr < (unsigned long)bi + space; ptr += PAGE_SIZE)
+ x = *(volatile unsigned long *)ptr;
+ }
+
+ /* Ok, now we need to generate a flattened device-tree to pass
+ * to the kernel
+ */
+ bootx_printf("Preparing boot params...\n");
+
+ hdr = bootx_flatten_dt(space);
+
+#ifdef CONFIG_BOOTX_TEXT
+#ifdef SET_BOOT_BAT
+ bootx_printf("Preparing BAT...\n");
+ btext_prepare_BAT();
+#else
+ btext_unmap();
+#endif
+#endif
+
+ reloc_got2(-offset);
+
+ __start(hdr, KERNELBASE + offset, 0);
+}
Index: linux-serialfix/arch/powerpc/kernel/head_32.S
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/head_32.S 2005-11-23 16:54:25.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/head_32.S 2005-11-23 16:54:26.000000000 +1100
@@ -125,6 +125,19 @@ __start:
bl prom_init
trap
+/*
+ * Check for BootX signature when supporting PowerMac and branch to
+ * appropriate trampoline if it's present
+ */
+#ifdef CONFIG_PPC_PMAC
+1: lis r31,0x426f
+ ori r31,r31,0x6f58
+ cmpw 0,r3,r31
+ bne 1f
+ bl bootx_init
+ trap
+#endif /* CONFIG_PPC_PMAC */
+
1: mr r31,r3 /* save parameters */
mr r30,r4
li r24,0 /* cpu # */
Index: linux-serialfix/arch/powerpc/platforms/powermac/Makefile
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/powermac/Makefile 2005-11-23 16:54:25.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/powermac/Makefile 2005-11-23 16:54:26.000000000 +1100
@@ -1,3 +1,5 @@
+CFLAGS_bootx_init.o += -fPIC
+
obj-y += pic.o setup.o time.o feature.o pci.o \
sleep.o low_i2c.o cache.o
obj-$(CONFIG_PMAC_BACKLIGHT) += backlight.o
@@ -6,5 +8,6 @@ obj-$(CONFIG_CPU_FREQ_PMAC64) += cpufreq
obj-$(CONFIG_NVRAM) += nvram.o
# ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
obj-$(CONFIG_PPC64) += nvram.o
+obj-$(CONFIG_PPC32) += bootx_init.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_PPC_MERGE) += udbg_scc.o udbg_adb.o
Index: linux-serialfix/include/asm-powerpc/bootx.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-serialfix/include/asm-powerpc/bootx.h 2005-11-23 16:54:26.000000000 +1100
@@ -0,0 +1,166 @@
+/*
+ * This file describes the structure passed from the BootX application
+ * (for MacOS) when it is used to boot Linux.
+ *
+ * Written by Benjamin Herrenschmidt.
+ */
+
+
+#ifndef __ASM_BOOTX_H__
+#define __ASM_BOOTX_H__
+
+#ifdef macintosh
+#include <Types.h>
+#include "linux_type_defs.h"
+#endif
+
+#ifdef macintosh
+/* All this requires PowerPC alignment */
+#pragma options align=power
+#endif
+
+/* On kernel entry:
+ *
+ * r3 = 0x426f6f58 ('BooX')
+ * r4 = pointer to boot_infos
+ * r5 = NULL
+ *
+ * Data and instruction translation disabled, interrupts
+ * disabled, kernel loaded at physical 0x00000000 on PCI
+ * machines (will be different on NuBus).
+ */
+
+#define BOOT_INFO_VERSION 5
+#define BOOT_INFO_COMPATIBLE_VERSION 1
+
+/* Bit in the architecture flag mask. More to be defined in
+ future versions. Note that either BOOT_ARCH_PCI or
+ BOOT_ARCH_NUBUS is set. The other BOOT_ARCH_NUBUS_xxx are
+ set additionally when BOOT_ARCH_NUBUS is set.
+ */
+#define BOOT_ARCH_PCI 0x00000001UL
+#define BOOT_ARCH_NUBUS 0x00000002UL
+#define BOOT_ARCH_NUBUS_PDM 0x00000010UL
+#define BOOT_ARCH_NUBUS_PERFORMA 0x00000020UL
+#define BOOT_ARCH_NUBUS_POWERBOOK 0x00000040UL
+
+/* Maximum number of ranges in phys memory map */
+#define MAX_MEM_MAP_SIZE 26
+
+/* This is the format of an element in the physical memory map. Note that
+ the map is optional and current BootX will only build it for pre-PCI
+ machines */
+typedef struct boot_info_map_entry
+{
+ __u32 physAddr; /* Physical starting address */
+ __u32 size; /* Size in bytes */
+} boot_info_map_entry_t;
+
+
+/* Here are the boot informations that are passed to the bootstrap
+ * Note that the kernel arguments and the device tree are appended
+ * at the end of this structure. */
+typedef struct boot_infos
+{
+ /* Version of this structure */
+ __u32 version;
+ /* backward compatible down to version: */
+ __u32 compatible_version;
+
+ /* NEW (vers. 2) this holds the current _logical_ base addr of
+ the frame buffer (for use by early boot message) */
+ __u8* logicalDisplayBase;
+
+ /* NEW (vers. 4) Apple's machine identification */
+ __u32 machineID;
+
+ /* NEW (vers. 4) Detected hw architecture */
+ __u32 architecture;
+
+ /* The device tree (internal addresses relative to the beginning of the tree,
+ * device tree offset relative to the beginning of this structure).
+ * On pre-PCI macintosh (BOOT_ARCH_PCI bit set to 0 in architecture), this
+ * field is 0.
+ */
+ __u32 deviceTreeOffset; /* Device tree offset */
+ __u32 deviceTreeSize; /* Size of the device tree */
+
+ /* Some infos about the current MacOS display */
+ __u32 dispDeviceRect[4]; /* left,top,right,bottom */
+ __u32 dispDeviceDepth; /* (8, 16 or 32) */
+ __u8* dispDeviceBase; /* base address (physical) */
+ __u32 dispDeviceRowBytes; /* rowbytes (in bytes) */
+ __u32 dispDeviceColorsOffset; /* Colormap (8 bits only) or 0 (*) */
+ /* Optional offset in the registry to the current
+ * MacOS display. (Can be 0 when not detected) */
+ __u32 dispDeviceRegEntryOffset;
+
+ /* Optional pointer to boot ramdisk (offset from this structure) */
+ __u32 ramDisk;
+ __u32 ramDiskSize; /* size of ramdisk image */
+
+ /* Kernel command line arguments (offset from this structure) */
+ __u32 kernelParamsOffset;
+
+ /* ALL BELOW NEW (vers. 4) */
+
+ /* This defines the physical memory. Valid with BOOT_ARCH_NUBUS flag
+ (non-PCI) only. On PCI, memory is contiguous and it's size is in the
+ device-tree. */
+ boot_info_map_entry_t
+ physMemoryMap[MAX_MEM_MAP_SIZE]; /* Where the phys memory is */
+ __u32 physMemoryMapSize; /* How many entries in map */
+
+
+ /* The framebuffer size (optional, currently 0) */
+ __u32 frameBufferSize; /* Represents a max size, can be 0. */
+
+ /* NEW (vers. 5) */
+
+ /* Total params size (args + colormap + device tree + ramdisk) */
+ __u32 totalParamsSize;
+
+} boot_infos_t;
+
+/* (*) The format of the colormap is 256 * 3 * 2 bytes. Each color index
+ * is represented by 3 short words containing a 16 bits (unsigned) color
+ * component. Later versions may contain the gamma table for direct-color
+ * devices here.
+ */
+#define BOOTX_COLORTABLE_SIZE (256UL*3UL*2UL)
+
+/* BootX passes the device-tree using a format that comes from earlier
+ * ppc32 kernels. This used to match what is in prom.h, but not anymore
+ * so we now define it here
+ */
+struct bootx_dt_prop {
+ u32 name;
+ int length;
+ u32 value;
+ u32 next;
+};
+
+struct bootx_dt_node {
+ u32 unused0;
+ u32 unused1;
+ u32 phandle; /* not really available */
+ u32 unused2;
+ u32 unused3;
+ u32 unused4;
+ u32 unused5;
+ u32 full_name;
+ u32 properties;
+ u32 parent;
+ u32 child;
+ u32 sibling;
+ u32 next;
+ u32 allnext;
+};
+
+extern void bootx_init(unsigned long r4, unsigned long phys);
+
+#ifdef macintosh
+#pragma options align=reset
+#endif
+
+#endif
^ permalink raw reply
* [PATCH] powerpc: Unify udbg (#2)
From: Benjamin Herrenschmidt @ 2005-11-23 6:57 UTC (permalink / raw)
To: Paul Mackerras; +Cc: linuxppc64-dev, linuxppc-dev list
This patch unifies udbg for both ppc32 and ppc64 when building the
merged achitecture. xmon now has a single "back end". The powermac udbg
stuff gets enriched with some ADB capabilities and btext output. In
addition, the early_init callback is now called on ppc32 as well,
approx. in the same order as ppc64 regarding device-tree manipulations.
The init sequences of ppc32 and ppc64 are getting closer, I'll unify
them in a later patch.
For now, you can force udbg to the scc using "sccdbg" or to btext using
"btextdbg" on powermacs. I'll implement a cleaner way of forcing udbg
output to something else than the autodetected OF output device in a
later patch.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
Updated to match the changes in prom_parse.c
Index: linux-serialfix/arch/powerpc/kernel/Makefile
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/Makefile 2005-11-23 16:54:25.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/Makefile 2005-11-23 16:54:25.000000000 +1100
@@ -18,7 +18,7 @@ obj-y += vdso32/
obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \
signal_64.o ptrace32.o systbl.o \
paca.o ioctl32.o cpu_setup_power4.o \
- firmware.o sysfs.o udbg.o idle_64.o
+ firmware.o sysfs.o idle_64.o
obj-$(CONFIG_PPC64) += vdso64/
obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o
obj-$(CONFIG_POWER4) += idle_power4.o
@@ -45,7 +45,7 @@ extra-$(CONFIG_8xx) := head_8xx.o
extra-y += vmlinux.lds
obj-y += process.o init_task.o time.o \
- prom.o traps.o setup-common.o
+ prom.o traps.o setup-common.o udbg.o
obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o systbl.o
obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o
obj-$(CONFIG_PPC_OF) += prom_init.o
@@ -55,8 +55,7 @@ obj-$(CONFIG_6xx) += idle_6xx.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_PPC_MULTIPLATFORM) += legacy_serial.o
-obj64-$(CONFIG_PPC_MULTIPLATFORM) += udbg_16550.o
-obj64-$(CONFIG_PPC_PMAC) += udbg_scc.o
+obj-$(CONFIG_PPC_MULTIPLATFORM) += udbg_16550.o
module-$(CONFIG_PPC64) += module_64.o
obj-$(CONFIG_MODULES) += $(module-y)
Index: linux-serialfix/arch/powerpc/kernel/udbg.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/udbg.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/udbg.c 2005-11-23 16:54:25.000000000 +1100
@@ -16,8 +16,8 @@
#include <linux/console.h>
#include <asm/processor.h>
-void (*udbg_putc)(unsigned char c);
-unsigned char (*udbg_getc)(void);
+void (*udbg_putc)(char c);
+char (*udbg_getc)(void);
int (*udbg_getc_poll)(void);
/* udbg library, used by xmon et al */
@@ -78,7 +78,7 @@ int udbg_read(char *buf, int buflen)
#define UDBG_BUFSIZE 256
void udbg_printf(const char *fmt, ...)
{
- unsigned char buf[UDBG_BUFSIZE];
+ char buf[UDBG_BUFSIZE];
va_list args;
va_start(args, fmt);
@@ -116,6 +116,8 @@ void __init disable_early_printk(void)
/* called by setup_system */
void register_early_udbg_console(void)
{
+ if (early_console_initialized)
+ return;
early_console_initialized = 1;
register_console(&udbg_console);
}
Index: linux-serialfix/arch/powerpc/kernel/udbg_scc.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/udbg_scc.c 2005-11-23 16:54:13.000000000 +1100
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,135 +0,0 @@
-/*
- * udbg for for zilog scc ports as found on Apple PowerMacs
- *
- * Copyright (C) 2001-2005 PPC 64 Team, IBM Corp
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <linux/config.h>
-#include <linux/types.h>
-#include <asm/udbg.h>
-#include <asm/processor.h>
-#include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/pmac_feature.h>
-
-extern u8 real_readb(volatile u8 __iomem *addr);
-extern void real_writeb(u8 data, volatile u8 __iomem *addr);
-
-#define SCC_TXRDY 4
-#define SCC_RXRDY 1
-
-static volatile u8 __iomem *sccc;
-static volatile u8 __iomem *sccd;
-
-static void udbg_scc_putc(unsigned char c)
-{
- if (sccc) {
- while ((in_8(sccc) & SCC_TXRDY) == 0)
- ;
- out_8(sccd, c);
- if (c == '\n')
- udbg_scc_putc('\r');
- }
-}
-
-static int udbg_scc_getc_poll(void)
-{
- if (sccc) {
- if ((in_8(sccc) & SCC_RXRDY) != 0)
- return in_8(sccd);
- else
- return -1;
- }
- return -1;
-}
-
-static unsigned char udbg_scc_getc(void)
-{
- if (sccc) {
- while ((in_8(sccc) & SCC_RXRDY) == 0)
- ;
- return in_8(sccd);
- }
- return 0;
-}
-
-static unsigned char scc_inittab[] = {
- 13, 0, /* set baud rate divisor */
- 12, 0,
- 14, 1, /* baud rate gen enable, src=rtxc */
- 11, 0x50, /* clocks = br gen */
- 5, 0xea, /* tx 8 bits, assert DTR & RTS */
- 4, 0x46, /* x16 clock, 1 stop */
- 3, 0xc1, /* rx enable, 8 bits */
-};
-
-void udbg_init_scc(struct device_node *np)
-{
- u32 *reg;
- unsigned long addr;
- int i, x;
-
- if (np == NULL)
- np = of_find_node_by_name(NULL, "escc");
- if (np == NULL || np->parent == NULL)
- return;
-
- udbg_printf("found SCC...\n");
- /* Get address within mac-io ASIC */
- reg = (u32 *)get_property(np, "reg", NULL);
- if (reg == NULL)
- return;
- addr = reg[0];
- udbg_printf("local addr: %lx\n", addr);
- /* Get address of mac-io PCI itself */
- reg = (u32 *)get_property(np->parent, "assigned-addresses", NULL);
- if (reg == NULL)
- return;
- addr += reg[2];
- udbg_printf("final addr: %lx\n", addr);
-
- /* Setup for 57600 8N1 */
- addr += 0x20;
- sccc = (volatile u8 * __iomem) ioremap(addr & PAGE_MASK, PAGE_SIZE) ;
- sccc += addr & ~PAGE_MASK;
- sccd = sccc + 0x10;
-
- udbg_printf("ioremap result sccc: %p\n", sccc);
- mb();
-
- for (i = 20000; i != 0; --i)
- x = in_8(sccc);
- out_8(sccc, 0x09); /* reset A or B side */
- out_8(sccc, 0xc0);
- for (i = 0; i < sizeof(scc_inittab); ++i)
- out_8(sccc, scc_inittab[i]);
-
- udbg_putc = udbg_scc_putc;
- udbg_getc = udbg_scc_getc;
- udbg_getc_poll = udbg_scc_getc_poll;
-
- udbg_puts("Hello World !\n");
-}
-
-static void udbg_real_scc_putc(unsigned char c)
-{
- while ((real_readb(sccc) & SCC_TXRDY) == 0)
- ;
- real_writeb(c, sccd);
- if (c == '\n')
- udbg_real_scc_putc('\r');
-}
-
-void udbg_init_pmac_realmode(void)
-{
- sccc = (volatile u8 __iomem *)0x80013020ul;
- sccd = (volatile u8 __iomem *)0x80013030ul;
-
- udbg_putc = udbg_real_scc_putc;
- udbg_getc = NULL;
- udbg_getc_poll = NULL;
-}
Index: linux-serialfix/arch/powerpc/platforms/powermac/udbg_adb.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-serialfix/arch/powerpc/platforms/powermac/udbg_adb.c 2005-11-23 16:54:25.000000000 +1100
@@ -0,0 +1,218 @@
+#include <linux/config.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/bitops.h>
+#include <linux/ptrace.h>
+#include <linux/adb.h>
+#include <linux/pmu.h>
+#include <linux/cuda.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/xmon.h>
+#include <asm/prom.h>
+#include <asm/bootx.h>
+#include <asm/machdep.h>
+#include <asm/errno.h>
+#include <asm/pmac_feature.h>
+#include <asm/processor.h>
+#include <asm/delay.h>
+#include <asm/btext.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+
+/*
+ * This implementation is "special", it can "patch" the current
+ * udbg implementation and work on top of it. It must thus be
+ * initialized last
+ */
+
+static void (*udbg_adb_old_putc)(char c);
+static char (*udbg_adb_old_getc)(void);
+static int (*udbg_adb_old_getc_poll)(void);
+
+static enum {
+ input_adb_none,
+ input_adb_pmu,
+ input_adb_cuda,
+} input_type = input_adb_none;
+
+static int udbg_adb_use_btext;
+
+int xmon_wants_key, xmon_adb_keycode;
+
+static inline void udbg_adb_poll(void)
+{
+#ifdef CONFIG_ADB_PMU
+ if (input_type == input_adb_pmu)
+ pmu_poll_adb();
+#endif /* CONFIG_ADB_PMU */
+#ifdef CONFIG_ADB_CUDA
+ if (input_type == input_adb_cuda)
+ cuda_poll();
+#endif /* CONFIG_ADB_CUDA */
+}
+
+#ifdef CONFIG_BOOTX_TEXT
+static int xmon_adb_shiftstate;
+
+static unsigned char xmon_keytab[128] =
+ "asdfhgzxcv\000bqwer" /* 0x00 - 0x0f */
+ "yt123465=97-80]o" /* 0x10 - 0x1f */
+ "u[ip\rlj'k;\\,/nm." /* 0x20 - 0x2f */
+ "\t `\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
+ "\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
+ "\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
+
+static unsigned char xmon_shift_keytab[128] =
+ "ASDFHGZXCV\000BQWER" /* 0x00 - 0x0f */
+ "YT!@#$^%+(&_*)}O" /* 0x10 - 0x1f */
+ "U{IP\rLJ\"K:|<?NM>" /* 0x20 - 0x2f */
+ "\t ~\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
+ "\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
+ "\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
+
+static char udbg_adb_local_getc(void)
+{
+ int k, t, on;
+
+ xmon_wants_key = 1;
+ for (;;) {
+ xmon_adb_keycode = -1;
+ t = 0;
+ on = 0;
+ k = -1;
+ do {
+ if (--t < 0) {
+ on = 1 - on;
+ btext_drawchar(on? 0xdb: 0x20);
+ btext_drawchar('\b');
+ t = 200000;
+ }
+ udbg_adb_poll();
+ if (udbg_adb_old_getc_poll)
+ k = udbg_adb_old_getc_poll();
+ } while (k == -1 && xmon_adb_keycode == -1);
+ if (on)
+ btext_drawstring(" \b");
+ if (k != -1)
+ return k;
+ k = xmon_adb_keycode;
+
+ /* test for shift keys */
+ if ((k & 0x7f) == 0x38 || (k & 0x7f) == 0x7b) {
+ xmon_adb_shiftstate = (k & 0x80) == 0;
+ continue;
+ }
+ if (k >= 0x80)
+ continue; /* ignore up transitions */
+ k = (xmon_adb_shiftstate? xmon_shift_keytab: xmon_keytab)[k];
+ if (k != 0)
+ break;
+ }
+ xmon_wants_key = 0;
+ return k;
+}
+#endif /* CONFIG_BOOTX_TEXT */
+
+static char udbg_adb_getc(void)
+{
+#ifdef CONFIG_BOOTX_TEXT
+ if (udbg_adb_use_btext && input_type != input_adb_none)
+ return udbg_adb_local_getc();
+#endif
+ if (udbg_adb_old_getc)
+ return udbg_adb_old_getc();
+ return -1;
+}
+
+/* getc_poll() is not really used, unless you have the xmon-over modem
+ * hack that doesn't quite concern us here, thus we just poll the low level
+ * ADB driver to prevent it from timing out and call back the original poll
+ * routine.
+ */
+static int udbg_adb_getc_poll(void)
+{
+ udbg_adb_poll();
+
+ if (udbg_adb_old_getc_poll)
+ return udbg_adb_old_getc_poll();
+ return -1;
+}
+
+static void udbg_adb_putc(char c)
+{
+#ifdef CONFIG_BOOTX_TEXT
+ if (udbg_adb_use_btext)
+ btext_drawchar(c);
+#endif
+ if (udbg_adb_old_putc)
+ return udbg_adb_old_putc(c);
+}
+
+void udbg_adb_init_early(void)
+{
+#ifdef CONFIG_BOOTX_TEXT
+ if (btext_find_display(1) == 0) {
+ udbg_adb_use_btext = 1;
+ udbg_putc = udbg_adb_putc;
+ }
+#endif
+}
+
+int udbg_adb_init(int force_btext)
+{
+ struct device_node *np;
+
+ /* Capture existing callbacks */
+ udbg_adb_old_putc = udbg_putc;
+ udbg_adb_old_getc = udbg_getc;
+ udbg_adb_old_getc_poll = udbg_getc_poll;
+
+ /* Check if our early init was already called */
+ if (udbg_adb_old_putc == udbg_adb_putc ||
+ udbg_adb_old_putc == btext_drawchar)
+ udbg_adb_old_putc = NULL;
+
+ /* Set ours as output */
+ udbg_putc = udbg_adb_putc;
+ udbg_getc = udbg_adb_getc;
+ udbg_getc_poll = udbg_adb_getc_poll;
+
+#ifdef CONFIG_BOOTX_TEXT
+ /* Check if we should use btext output */
+ if (btext_find_display(force_btext) == 0)
+ udbg_adb_use_btext = 1;
+#endif
+
+ /* See if there is a keyboard in the device tree with a parent
+ * of type "adb". If not, we return a failure, but we keep the
+ * bext output set for now
+ */
+ for (np = NULL; (np = of_find_node_by_name(np, "keyboard")) != NULL;) {
+ struct device_node *parent = of_get_parent(np);
+ int found = (parent && !strcmp(parent->type, "adb") == 0);
+ of_node_put(parent);
+ if (found)
+ break;
+ }
+ if (np == NULL)
+ return -ENODEV;
+ of_node_put(np);
+
+#ifdef CONFIG_ADB_PMU
+ if (find_via_pmu())
+ input_type = input_adb_pmu;
+#endif
+#ifdef CONFIG_ADB_CUDA
+ if (find_via_cuda())
+ input_type = input_adb_cuda;
+#endif
+
+ /* Same as above: nothing found, keep btext set for output */
+ if (input_type == input_adb_none)
+ return -ENODEV;
+
+ return 0;
+}
Index: linux-serialfix/arch/powerpc/platforms/powermac/udbg_scc.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-serialfix/arch/powerpc/platforms/powermac/udbg_scc.c 2005-11-23 16:54:25.000000000 +1100
@@ -0,0 +1,165 @@
+/*
+ * udbg for for zilog scc ports as found on Apple PowerMacs
+ *
+ * Copyright (C) 2001-2005 PPC 64 Team, IBM Corp
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <linux/config.h>
+#include <linux/types.h>
+#include <asm/udbg.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/pmac_feature.h>
+
+extern u8 real_readb(volatile u8 __iomem *addr);
+extern void real_writeb(u8 data, volatile u8 __iomem *addr);
+
+#define SCC_TXRDY 4
+#define SCC_RXRDY 1
+
+static volatile u8 __iomem *sccc;
+static volatile u8 __iomem *sccd;
+
+static void udbg_scc_putc(char c)
+{
+ if (sccc) {
+ while ((in_8(sccc) & SCC_TXRDY) == 0)
+ ;
+ out_8(sccd, c);
+ if (c == '\n')
+ udbg_scc_putc('\r');
+ }
+}
+
+static int udbg_scc_getc_poll(void)
+{
+ if (sccc) {
+ if ((in_8(sccc) & SCC_RXRDY) != 0)
+ return in_8(sccd);
+ else
+ return -1;
+ }
+ return -1;
+}
+
+static char udbg_scc_getc(void)
+{
+ if (sccc) {
+ while ((in_8(sccc) & SCC_RXRDY) == 0)
+ ;
+ return in_8(sccd);
+ }
+ return 0;
+}
+
+static unsigned char scc_inittab[] = {
+ 13, 0, /* set baud rate divisor */
+ 12, 0,
+ 14, 1, /* baud rate gen enable, src=rtxc */
+ 11, 0x50, /* clocks = br gen */
+ 5, 0xea, /* tx 8 bits, assert DTR & RTS */
+ 4, 0x46, /* x16 clock, 1 stop */
+ 3, 0xc1, /* rx enable, 8 bits */
+};
+
+void udbg_scc_init(int force_scc)
+{
+ u32 *reg;
+ unsigned long addr;
+ struct device_node *stdout = NULL, *escc = NULL, *macio = NULL;
+ struct device_node *ch, *ch_def = NULL, *ch_a = NULL;
+ char *path;
+ int i, x;
+
+ escc = of_find_node_by_name(NULL, "escc");
+ if (escc == NULL)
+ goto bail;
+ macio = of_get_parent(escc);
+ if (macio == NULL)
+ goto bail;
+ path = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+ if (path != NULL)
+ stdout = of_find_node_by_path(path);
+ for (ch = NULL; (ch = of_get_next_child(escc, ch)) != NULL;) {
+ if (ch == stdout)
+ ch_def = of_node_get(ch);
+ if (strcmp(ch->name, "ch-a") == 0)
+ ch_a = of_node_get(ch);
+ }
+ if (ch_def == NULL && !force_scc)
+ goto bail;
+
+ ch = ch_def ? ch_def : ch_a;
+
+ /* Get address within mac-io ASIC */
+ reg = (u32 *)get_property(escc, "reg", NULL);
+ if (reg == NULL)
+ goto bail;
+ addr = reg[0];
+
+ /* Get address of mac-io PCI itself */
+ reg = (u32 *)get_property(macio, "assigned-addresses", NULL);
+ if (reg == NULL)
+ goto bail;
+ addr += reg[2];
+
+ /* Lock the serial port */
+ pmac_call_feature(PMAC_FTR_SCC_ENABLE, ch,
+ PMAC_SCC_ASYNC | PMAC_SCC_FLAG_XMON, 1);
+
+
+ /* Setup for 57600 8N1 */
+ if (ch == ch_a)
+ addr += 0x20;
+ sccc = (volatile u8 * __iomem) ioremap(addr & PAGE_MASK, PAGE_SIZE) ;
+ sccc += addr & ~PAGE_MASK;
+ sccd = sccc + 0x10;
+
+ mb();
+
+ for (i = 20000; i != 0; --i)
+ x = in_8(sccc);
+ out_8(sccc, 0x09); /* reset A or B side */
+ out_8(sccc, 0xc0);
+ for (i = 0; i < sizeof(scc_inittab); ++i)
+ out_8(sccc, scc_inittab[i]);
+
+ udbg_putc = udbg_scc_putc;
+ udbg_getc = udbg_scc_getc;
+ udbg_getc_poll = udbg_scc_getc_poll;
+
+ udbg_puts("Hello World !\n");
+
+ bail:
+ of_node_put(macio);
+ of_node_put(escc);
+ of_node_put(stdout);
+ of_node_put(ch_def);
+ of_node_put(ch_a);
+}
+
+#ifdef CONFIG_PPC64
+static void udbg_real_scc_putc(char c)
+{
+ while ((real_readb(sccc) & SCC_TXRDY) == 0)
+ ;
+ real_writeb(c, sccd);
+ if (c == '\n')
+ udbg_real_scc_putc('\r');
+}
+
+void udbg_init_pmac_realmode(void)
+{
+ sccc = (volatile u8 __iomem *)0x80013020ul;
+ sccd = (volatile u8 __iomem *)0x80013030ul;
+
+ udbg_putc = udbg_real_scc_putc;
+ udbg_getc = NULL;
+ udbg_getc_poll = NULL;
+}
+#endif /* CONFIG_PPC64 */
Index: linux-serialfix/arch/powerpc/Kconfig
===================================================================
--- linux-serialfix.orig/arch/powerpc/Kconfig 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/Kconfig 2005-11-23 16:54:25.000000000 +1100
@@ -50,7 +50,7 @@ config PPC
config EARLY_PRINTK
bool
- default y if PPC64
+ default y
config COMPAT
bool
Index: linux-serialfix/arch/powerpc/kernel/btext.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/btext.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/btext.c 2005-11-23 16:54:25.000000000 +1100
@@ -31,15 +31,18 @@ static void draw_byte_32(unsigned char *
static void draw_byte_16(unsigned char *bits, unsigned int *base, int rb);
static void draw_byte_8(unsigned char *bits, unsigned int *base, int rb);
-static int g_loc_X;
-static int g_loc_Y;
-static int g_max_loc_X;
-static int g_max_loc_Y;
-
-static int dispDeviceRowBytes;
-static int dispDeviceDepth;
-static int dispDeviceRect[4];
-static unsigned char *dispDeviceBase, *logicalDisplayBase;
+#define __force_data __attribute__((__section__(".data")))
+
+static int g_loc_X __force_data;
+static int g_loc_Y __force_data;
+static int g_max_loc_X __force_data;
+static int g_max_loc_Y __force_data;
+
+static int dispDeviceRowBytes __force_data;
+static int dispDeviceDepth __force_data;
+static int dispDeviceRect[4] __force_data;
+static unsigned char *dispDeviceBase __force_data;
+static unsigned char *logicalDisplayBase __force_data;
unsigned long disp_BAT[2] __initdata = {0, 0};
@@ -47,7 +50,7 @@ unsigned long disp_BAT[2] __initdata = {
static unsigned char vga_font[cmapsz];
-int boot_text_mapped;
+int boot_text_mapped __force_data = 0;
int force_printk_to_btext = 0;
#ifdef CONFIG_PPC32
@@ -66,8 +69,7 @@ int force_printk_to_btext = 0;
* is really badly aligned, but I didn't encounter this case
* yet.
*/
-void __init
-btext_prepare_BAT(void)
+void __init btext_prepare_BAT(void)
{
unsigned long vaddr = KERNELBASE + 0x10000000;
unsigned long addr;
@@ -95,12 +97,13 @@ btext_prepare_BAT(void)
}
#endif
-/* This function will enable the early boot text when doing OF booting. This
- * way, xmon output should work too
+
+/* This function can be used to enable the early boot text when doing
+ * OF booting or within bootx init. It must be followed by a btext_unmap()
+ * call before the logical address becomes unuseable
*/
-void __init
-btext_setup_display(int width, int height, int depth, int pitch,
- unsigned long address)
+void __init btext_setup_display(int width, int height, int depth, int pitch,
+ unsigned long address)
{
g_loc_X = 0;
g_loc_Y = 0;
@@ -116,6 +119,11 @@ btext_setup_display(int width, int heigh
boot_text_mapped = 1;
}
+void __init btext_unmap(void)
+{
+ boot_text_mapped = 0;
+}
+
/* Here's a small text engine to use during early boot
* or for debugging purposes
*
@@ -127,7 +135,7 @@ btext_setup_display(int width, int heigh
* changes.
*/
-void map_boot_text(void)
+static void map_boot_text(void)
{
unsigned long base, offset, size;
unsigned char *vbase;
@@ -175,8 +183,9 @@ int btext_initialize(struct device_node
if (prop)
address = *prop;
- /* FIXME: Add support for PCI reg properties */
-
+ /* FIXME: Add support for PCI reg properties. Right now, only
+ * reliable on macs
+ */
if (address == 0)
return -EINVAL;
@@ -184,7 +193,6 @@ int btext_initialize(struct device_node
g_loc_Y = 0;
g_max_loc_X = width / 8;
g_max_loc_Y = height / 16;
- logicalDisplayBase = (unsigned char *)address;
dispDeviceBase = (unsigned char *)address;
dispDeviceRowBytes = pitch;
dispDeviceDepth = depth;
@@ -197,7 +205,7 @@ int btext_initialize(struct device_node
return 0;
}
-void __init init_boot_display(void)
+int __init btext_find_display(int allow_nonstdout)
{
char *name;
struct device_node *np = NULL;
@@ -218,8 +226,8 @@ void __init init_boot_display(void)
}
if (np)
rc = btext_initialize(np);
- if (rc == 0)
- return;
+ if (rc == 0 || !allow_nonstdout)
+ return rc;
for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
if (get_property(np, "linux,opened", NULL)) {
@@ -228,8 +236,9 @@ void __init init_boot_display(void)
printk("result: %d\n", rc);
}
if (rc == 0)
- return;
+ break;
}
+ return rc;
}
/* Calc the base address of a given point (x,y) */
@@ -277,44 +286,83 @@ EXPORT_SYMBOL(btext_update_display);
void btext_clearscreen(void)
{
- unsigned long *base = (unsigned long *)calc_base(0, 0);
+ unsigned int *base = (unsigned int *)calc_base(0, 0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
- (dispDeviceDepth >> 3)) >> 3;
+ (dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)
{
- unsigned long *ptr = base;
+ unsigned int *ptr = base;
for(j=width; j; --j)
*(ptr++) = 0;
- base += (dispDeviceRowBytes >> 3);
+ base += (dispDeviceRowBytes >> 2);
+ }
+}
+
+void btext_flushscreen(void)
+{
+ unsigned int *base = (unsigned int *)calc_base(0, 0);
+ unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
+ (dispDeviceDepth >> 3)) >> 2;
+ int i,j;
+
+ for (i=0; i < (dispDeviceRect[3] - dispDeviceRect[1]); i++)
+ {
+ unsigned int *ptr = base;
+ for(j = width; j > 0; j -= 8) {
+ __asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
+ ptr += 8;
+ }
+ base += (dispDeviceRowBytes >> 2);
}
+ __asm__ __volatile__ ("sync" ::: "memory");
}
+void btext_flushline(void)
+{
+ unsigned int *base = (unsigned int *)calc_base(0, g_loc_Y << 4);
+ unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
+ (dispDeviceDepth >> 3)) >> 2;
+ int i,j;
+
+ for (i=0; i < 16; i++)
+ {
+ unsigned int *ptr = base;
+ for(j = width; j > 0; j -= 8) {
+ __asm__ __volatile__ ("dcbst 0,%0" :: "r" (ptr));
+ ptr += 8;
+ }
+ base += (dispDeviceRowBytes >> 2);
+ }
+ __asm__ __volatile__ ("sync" ::: "memory");
+}
+
+
#ifndef NO_SCROLL
static void scrollscreen(void)
{
- unsigned long *src = (unsigned long *)calc_base(0,16);
- unsigned long *dst = (unsigned long *)calc_base(0,0);
+ unsigned int *src = (unsigned int *)calc_base(0,16);
+ unsigned int *dst = (unsigned int *)calc_base(0,0);
unsigned long width = ((dispDeviceRect[2] - dispDeviceRect[0]) *
- (dispDeviceDepth >> 3)) >> 3;
+ (dispDeviceDepth >> 3)) >> 2;
int i,j;
for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)
{
- unsigned long *src_ptr = src;
- unsigned long *dst_ptr = dst;
+ unsigned int *src_ptr = src;
+ unsigned int *dst_ptr = dst;
for(j=width; j; --j)
*(dst_ptr++) = *(src_ptr++);
- src += (dispDeviceRowBytes >> 3);
- dst += (dispDeviceRowBytes >> 3);
+ src += (dispDeviceRowBytes >> 2);
+ dst += (dispDeviceRowBytes >> 2);
}
for (i=0; i<16; i++)
{
- unsigned long *dst_ptr = dst;
+ unsigned int *dst_ptr = dst;
for(j=width; j; --j)
*(dst_ptr++) = 0;
- dst += (dispDeviceRowBytes >> 3);
+ dst += (dispDeviceRowBytes >> 2);
}
}
#endif /* ndef NO_SCROLL */
@@ -377,6 +425,14 @@ void btext_drawstring(const char *c)
btext_drawchar(*c++);
}
+void btext_drawtext(const char *c, unsigned int len)
+{
+ if (!boot_text_mapped)
+ return;
+ while (len--)
+ btext_drawchar(*c++);
+}
+
void btext_drawhex(unsigned long v)
{
char *hex_table = "0123456789abcdef";
Index: linux-serialfix/arch/powerpc/kernel/setup_32.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/setup_32.c 2005-11-23 16:54:25.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/setup_32.c 2005-11-23 16:54:25.000000000 +1100
@@ -40,6 +40,7 @@
#include <asm/xmon.h>
#include <asm/time.h>
#include <asm/serial.h>
+#include <asm/udbg.h>
#include "setup.h"
@@ -173,12 +174,23 @@ void __init platform_init(void)
*/
void __init machine_init(unsigned long dt_ptr, unsigned long phys)
{
+ /* If btext is enabled, we might have a BAT setup for early display,
+ * thus we do enable some very basic udbg output
+ */
+#ifdef CONFIG_BOOTX_TEXT
+ udbg_putc = btext_drawchar;
+#endif
+
+ /* Do some early initialization based on the flat device tree */
early_init_devtree(__va(dt_ptr));
+ /* Check default command line */
#ifdef CONFIG_CMDLINE
- strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
+ if (cmd_line[0] == 0)
+ strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
#endif /* CONFIG_CMDLINE */
+ /* Base init based on machine type */
platform_init();
#ifdef CONFIG_6xx
@@ -294,21 +306,11 @@ void __init setup_arch(char **cmdline_p)
smp_setup_cpu_maps();
-#ifdef CONFIG_BOOTX_TEXT
- init_boot_display();
-#endif
-
-#ifdef CONFIG_PPC_PMAC
- /* This could be called "early setup arch", it must be done
- * now because xmon need it
- */
- if (_machine == _MACH_Pmac)
- pmac_feature_init(); /* New cool way */
-#endif
-
#ifdef CONFIG_XMON_DEFAULT
xmon_init(1);
#endif
+ /* Register early console */
+ register_early_udbg_console();
#if defined(CONFIG_KGDB)
if (ppc_md.kgdb_map_scc)
Index: linux-serialfix/arch/powerpc/kernel/udbg_16550.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/udbg_16550.c 2005-11-23 16:54:25.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/udbg_16550.c 2005-11-23 16:54:25.000000000 +1100
@@ -47,7 +47,7 @@ struct NS16550 {
static volatile struct NS16550 __iomem *udbg_comport;
-static void udbg_550_putc(unsigned char c)
+static void udbg_550_putc(char c)
{
if (udbg_comport) {
while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0)
@@ -69,7 +69,7 @@ static int udbg_550_getc_poll(void)
return -1;
}
-static unsigned char udbg_550_getc(void)
+static char udbg_550_getc(void)
{
if (udbg_comport) {
while ((in_8(&udbg_comport->lsr) & LSR_DR) == 0)
Index: linux-serialfix/arch/powerpc/platforms/powermac/Makefile
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/powermac/Makefile 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/powermac/Makefile 2005-11-23 16:54:25.000000000 +1100
@@ -7,3 +7,4 @@ obj-$(CONFIG_NVRAM) += nvram.o
# ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
obj-$(CONFIG_PPC64) += nvram.o
obj-$(CONFIG_SMP) += smp.o
+obj-$(CONFIG_PPC_MERGE) += udbg_scc.o udbg_adb.o
Index: linux-serialfix/arch/powerpc/platforms/powermac/setup.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/powermac/setup.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/powermac/setup.c 2005-11-23 16:54:25.000000000 +1100
@@ -76,6 +76,7 @@
#include <asm/pmc.h>
#include <asm/mpic.h>
#include <asm/lmb.h>
+#include <asm/udbg.h>
#include "pmac.h"
@@ -321,16 +322,6 @@ void __init pmac_setup_arch(void)
l2cr_init();
#endif /* CONFIG_PPC32 */
-#ifdef CONFIG_PPC64
- /* Probe motherboard chipset */
- /* this is done earlier in setup_arch for 32-bit */
- pmac_feature_init();
-
- /* We can NAP */
- powersave_nap = 1;
- printk(KERN_INFO "Using native/NAP idle loop\n");
-#endif
-
#ifdef CONFIG_KGDB
zs_kgdb_hook(0);
#endif
@@ -621,13 +612,26 @@ static void __init pmac_init_early(void)
* and call ioremap
*/
hpte_init_native();
+#endif
- /* Init SCC */
- if (strstr(cmd_line, "sccdbg")) {
- sccdbg = 1;
- udbg_init_scc(NULL);
+ /* Enable early btext debug if requested */
+ if (strstr(cmd_line, "btextdbg")) {
+ udbg_adb_init_early();
+ register_early_udbg_console();
}
+ /* Probe motherboard chipset */
+ pmac_feature_init();
+
+ /* We can NAP */
+ powersave_nap = 1;
+ printk(KERN_INFO "Using native/NAP idle loop\n");
+
+ /* Initialize debug stuff */
+ udbg_scc_init(!!strstr(cmd_line, "sccdbg"));
+ udbg_adb_init(!!strstr(cmd_line, "btextdbg"));
+
+#ifdef CONFIG_PPC64
/* Setup interrupt mapping options */
ppc64_interrupt_controller = IC_OPEN_PIC;
@@ -637,19 +641,8 @@ static void __init pmac_init_early(void)
static void __init pmac_progress(char *s, unsigned short hex)
{
-#ifdef CONFIG_PPC64
- if (sccdbg) {
- udbg_puts(s);
- udbg_puts("\n");
- return;
- }
-#endif
-#ifdef CONFIG_BOOTX_TEXT
- if (boot_text_mapped) {
- btext_drawstring(s);
- btext_drawchar('\n');
- }
-#endif /* CONFIG_BOOTX_TEXT */
+ udbg_puts(s);
+ udbg_puts("\n");
}
/*
@@ -734,7 +727,8 @@ static int __init pmac_probe(int platfor
}
#ifdef CONFIG_PPC64
-static int pmac_probe_mode(struct pci_bus *bus)
+/* Move that to pci.c */
+static int pmac_pci_probe_mode(struct pci_bus *bus)
{
struct device_node *node = bus->sysdata;
@@ -770,7 +764,7 @@ struct machdep_calls __initdata pmac_md
.check_legacy_ioport = pmac_check_legacy_ioport,
.progress = pmac_progress,
#ifdef CONFIG_PPC64
- .pci_probe_mode = pmac_probe_mode,
+ .pci_probe_mode = pmac_pci_probe_mode,
.idle_loop = native_idle,
.enable_pmcs = power4_enable_pmcs,
#endif
Index: linux-serialfix/arch/powerpc/xmon/Makefile
===================================================================
--- linux-serialfix.orig/arch/powerpc/xmon/Makefile 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/xmon/Makefile 2005-11-23 16:54:25.000000000 +1100
@@ -3,9 +3,5 @@
ifdef CONFIG_PPC64
EXTRA_CFLAGS += -mno-minimal-toc
endif
-
-obj-$(CONFIG_8xx) += start_8xx.o
-obj-$(CONFIG_6xx) += start_32.o
-obj-$(CONFIG_4xx) += start_32.o
-obj-$(CONFIG_PPC64) += start_64.o
-obj-y += xmon.o ppc-dis.o ppc-opc.o setjmp.o nonstdio.o
+obj-y += xmon.o ppc-dis.o ppc-opc.o setjmp.o start.o \
+ nonstdio.o
Index: linux-serialfix/arch/powerpc/xmon/start.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-serialfix/arch/powerpc/xmon/start.c 2005-11-23 16:54:25.000000000 +1100
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 1996 Paul Mackerras.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <asm/machdep.h>
+#include <asm/udbg.h>
+#include "nonstdio.h"
+
+void xmon_map_scc(void)
+{
+}
+
+int xmon_write(void *ptr, int nb)
+{
+ return udbg_write(ptr, nb);
+}
+
+int xmon_readchar(void)
+{
+ if (udbg_getc)
+ return udbg_getc();
+ return -1;
+}
+
+int xmon_read_poll(void)
+{
+ if (udbg_getc_poll)
+ return udbg_getc_poll();
+ return -1;
+}
Index: linux-serialfix/arch/powerpc/xmon/start_32.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/xmon/start_32.c 2005-11-23 16:54:13.000000000 +1100
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,441 +0,0 @@
-/*
- * Copyright (C) 1996 Paul Mackerras.
- */
-#include <linux/config.h>
-#include <linux/string.h>
-#include <asm/machdep.h>
-#include <asm/io.h>
-#include <asm/page.h>
-#include <linux/adb.h>
-#include <linux/pmu.h>
-#include <linux/cuda.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/bitops.h>
-#include <asm/xmon.h>
-#include <asm/prom.h>
-#include <asm/bootx.h>
-#include <asm/machdep.h>
-#include <asm/errno.h>
-#include <asm/pmac_feature.h>
-#include <asm/processor.h>
-#include <asm/delay.h>
-#include <asm/btext.h>
-#include <asm/time.h>
-#include "nonstdio.h"
-
-static volatile unsigned char __iomem *sccc, *sccd;
-unsigned int TXRDY, RXRDY, DLAB;
-
-static int use_serial;
-static int use_screen;
-static int via_modem;
-static int xmon_use_sccb;
-static struct device_node *channel_node;
-
-void buf_access(void)
-{
- if (DLAB)
- sccd[3] &= ~DLAB; /* reset DLAB */
-}
-
-extern int adb_init(void);
-
-#ifdef CONFIG_PPC_CHRP
-/*
- * This looks in the "ranges" property for the primary PCI host bridge
- * to find the physical address of the start of PCI/ISA I/O space.
- * It is basically a cut-down version of pci_process_bridge_OF_ranges.
- */
-static unsigned long chrp_find_phys_io_base(void)
-{
- struct device_node *node;
- unsigned int *ranges;
- unsigned long base = CHRP_ISA_IO_BASE;
- int rlen = 0;
- int np;
-
- node = find_devices("isa");
- if (node != NULL) {
- node = node->parent;
- if (node == NULL || node->type == NULL
- || strcmp(node->type, "pci") != 0)
- node = NULL;
- }
- if (node == NULL)
- node = find_devices("pci");
- if (node == NULL)
- return base;
-
- ranges = (unsigned int *) get_property(node, "ranges", &rlen);
- np = prom_n_addr_cells(node) + 5;
- while ((rlen -= np * sizeof(unsigned int)) >= 0) {
- if ((ranges[0] >> 24) == 1 && ranges[2] == 0) {
- /* I/O space starting at 0, grab the phys base */
- base = ranges[np - 3];
- break;
- }
- ranges += np;
- }
- return base;
-}
-#endif /* CONFIG_PPC_CHRP */
-
-void xmon_map_scc(void)
-{
-#ifdef CONFIG_PPC_MULTIPLATFORM
- volatile unsigned char __iomem *base;
-
- if (_machine == _MACH_Pmac) {
- struct device_node *np;
- unsigned long addr;
-#ifdef CONFIG_BOOTX_TEXT
- if (!use_screen && !use_serial
- && !machine_is_compatible("iMac")) {
- /* see if there is a keyboard in the device tree
- with a parent of type "adb" */
- for (np = find_devices("keyboard"); np; np = np->next)
- if (np->parent && np->parent->type
- && strcmp(np->parent->type, "adb") == 0)
- break;
-
- /* needs to be hacked if xmon_printk is to be used
- from within find_via_pmu() */
-#ifdef CONFIG_ADB_PMU
- if (np != NULL && boot_text_mapped && find_via_pmu())
- use_screen = 1;
-#endif
-#ifdef CONFIG_ADB_CUDA
- if (np != NULL && boot_text_mapped && find_via_cuda())
- use_screen = 1;
-#endif
- }
- if (!use_screen && (np = find_devices("escc")) != NULL) {
- /*
- * look for the device node for the serial port
- * we're using and see if it says it has a modem
- */
- char *name = xmon_use_sccb? "ch-b": "ch-a";
- char *slots;
- int l;
-
- np = np->child;
- while (np != NULL && strcmp(np->name, name) != 0)
- np = np->sibling;
- if (np != NULL) {
- /* XXX should parse this properly */
- channel_node = np;
- slots = get_property(np, "slot-names", &l);
- if (slots != NULL && l >= 10
- && strcmp(slots+4, "Modem") == 0)
- via_modem = 1;
- }
- }
- btext_drawstring("xmon uses ");
- if (use_screen)
- btext_drawstring("screen and keyboard\n");
- else {
- if (via_modem)
- btext_drawstring("modem on ");
- btext_drawstring(xmon_use_sccb? "printer": "modem");
- btext_drawstring(" port\n");
- }
-
-#endif /* CONFIG_BOOTX_TEXT */
-
-#ifdef CHRP_ESCC
- addr = 0xc1013020;
-#else
- addr = 0xf3013020;
-#endif
- TXRDY = 4;
- RXRDY = 1;
-
- np = find_devices("mac-io");
- if (np && np->n_addrs)
- addr = np->addrs[0].address + 0x13020;
- base = (volatile unsigned char *) ioremap(addr & PAGE_MASK, PAGE_SIZE);
- sccc = base + (addr & ~PAGE_MASK);
- sccd = sccc + 0x10;
-
- } else {
- base = (volatile unsigned char *) isa_io_base;
-
-#ifdef CONFIG_PPC_CHRP
- if (_machine == _MACH_chrp)
- base = (volatile unsigned char __iomem *)
- ioremap(chrp_find_phys_io_base(), 0x1000);
-#endif
-
- sccc = base + 0x3fd;
- sccd = base + 0x3f8;
- if (xmon_use_sccb) {
- sccc -= 0x100;
- sccd -= 0x100;
- }
- TXRDY = 0x20;
- RXRDY = 1;
- DLAB = 0x80;
- }
-#elif defined(CONFIG_GEMINI)
- /* should already be mapped by the kernel boot */
- sccc = (volatile unsigned char __iomem *) 0xffeffb0d;
- sccd = (volatile unsigned char __iomem *) 0xffeffb08;
- TXRDY = 0x20;
- RXRDY = 1;
- DLAB = 0x80;
-#elif defined(CONFIG_405GP)
- sccc = (volatile unsigned char __iomem *)0xef600305;
- sccd = (volatile unsigned char __iomem *)0xef600300;
- TXRDY = 0x20;
- RXRDY = 1;
- DLAB = 0x80;
-#endif /* platform */
-}
-
-static int scc_initialized = 0;
-
-void xmon_init_scc(void);
-extern void cuda_poll(void);
-
-static inline void do_poll_adb(void)
-{
-#ifdef CONFIG_ADB_PMU
- if (sys_ctrler == SYS_CTRLER_PMU)
- pmu_poll_adb();
-#endif /* CONFIG_ADB_PMU */
-#ifdef CONFIG_ADB_CUDA
- if (sys_ctrler == SYS_CTRLER_CUDA)
- cuda_poll();
-#endif /* CONFIG_ADB_CUDA */
-}
-
-int xmon_write(void *ptr, int nb)
-{
- char *p = ptr;
- int i, c, ct;
-
-#ifdef CONFIG_SMP
- static unsigned long xmon_write_lock;
- int lock_wait = 1000000;
- int locked;
-
- while ((locked = test_and_set_bit(0, &xmon_write_lock)) != 0)
- if (--lock_wait == 0)
- break;
-#endif
-
-#ifdef CONFIG_BOOTX_TEXT
- if (use_screen) {
- /* write it on the screen */
- for (i = 0; i < nb; ++i)
- btext_drawchar(*p++);
- goto out;
- }
-#endif
- if (!scc_initialized)
- xmon_init_scc();
- ct = 0;
- for (i = 0; i < nb; ++i) {
- while ((*sccc & TXRDY) == 0)
- do_poll_adb();
- c = p[i];
- if (c == '\n' && !ct) {
- c = '\r';
- ct = 1;
- --i;
- } else {
- ct = 0;
- }
- buf_access();
- *sccd = c;
- eieio();
- }
-
- out:
-#ifdef CONFIG_SMP
- if (!locked)
- clear_bit(0, &xmon_write_lock);
-#endif
- return nb;
-}
-
-int xmon_wants_key;
-int xmon_adb_keycode;
-
-#ifdef CONFIG_BOOTX_TEXT
-static int xmon_adb_shiftstate;
-
-static unsigned char xmon_keytab[128] =
- "asdfhgzxcv\000bqwer" /* 0x00 - 0x0f */
- "yt123465=97-80]o" /* 0x10 - 0x1f */
- "u[ip\rlj'k;\\,/nm." /* 0x20 - 0x2f */
- "\t `\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
- "\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
- "\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
-
-static unsigned char xmon_shift_keytab[128] =
- "ASDFHGZXCV\000BQWER" /* 0x00 - 0x0f */
- "YT!@#$^%+(&_*)}O" /* 0x10 - 0x1f */
- "U{IP\rLJ\"K:|<?NM>" /* 0x20 - 0x2f */
- "\t ~\177\0\033\0\0\0\0\0\0\0\0\0\0" /* 0x30 - 0x3f */
- "\0.\0*\0+\0\0\0\0\0/\r\0-\0" /* 0x40 - 0x4f */
- "\0\0000123456789\0\0\0"; /* 0x50 - 0x5f */
-
-static int xmon_get_adb_key(void)
-{
- int k, t, on;
-
- xmon_wants_key = 1;
- for (;;) {
- xmon_adb_keycode = -1;
- t = 0;
- on = 0;
- do {
- if (--t < 0) {
- on = 1 - on;
- btext_drawchar(on? 0xdb: 0x20);
- btext_drawchar('\b');
- t = 200000;
- }
- do_poll_adb();
- } while (xmon_adb_keycode == -1);
- k = xmon_adb_keycode;
- if (on)
- btext_drawstring(" \b");
-
- /* test for shift keys */
- if ((k & 0x7f) == 0x38 || (k & 0x7f) == 0x7b) {
- xmon_adb_shiftstate = (k & 0x80) == 0;
- continue;
- }
- if (k >= 0x80)
- continue; /* ignore up transitions */
- k = (xmon_adb_shiftstate? xmon_shift_keytab: xmon_keytab)[k];
- if (k != 0)
- break;
- }
- xmon_wants_key = 0;
- return k;
-}
-#endif /* CONFIG_BOOTX_TEXT */
-
-int xmon_readchar(void)
-{
-#ifdef CONFIG_BOOTX_TEXT
- if (use_screen)
- return xmon_get_adb_key();
-#endif
- if (!scc_initialized)
- xmon_init_scc();
- while ((*sccc & RXRDY) == 0)
- do_poll_adb();
- buf_access();
- return *sccd;
-}
-
-int xmon_read_poll(void)
-{
- if ((*sccc & RXRDY) == 0) {
- do_poll_adb();
- return -1;
- }
- buf_access();
- return *sccd;
-}
-
-static unsigned char scc_inittab[] = {
- 13, 0, /* set baud rate divisor */
- 12, 1,
- 14, 1, /* baud rate gen enable, src=rtxc */
- 11, 0x50, /* clocks = br gen */
- 5, 0xea, /* tx 8 bits, assert DTR & RTS */
- 4, 0x46, /* x16 clock, 1 stop */
- 3, 0xc1, /* rx enable, 8 bits */
-};
-
-void xmon_init_scc(void)
-{
- if ( _machine == _MACH_chrp )
- {
- sccd[3] = 0x83; eieio(); /* LCR = 8N1 + DLAB */
- sccd[0] = 12; eieio(); /* DLL = 9600 baud */
- sccd[1] = 0; eieio();
- sccd[2] = 0; eieio(); /* FCR = 0 */
- sccd[3] = 3; eieio(); /* LCR = 8N1 */
- sccd[1] = 0; eieio(); /* IER = 0 */
- }
- else if ( _machine == _MACH_Pmac )
- {
- int i, x;
- unsigned long timeout;
-
- if (channel_node != 0)
- pmac_call_feature(
- PMAC_FTR_SCC_ENABLE,
- channel_node,
- PMAC_SCC_ASYNC | PMAC_SCC_FLAG_XMON, 1);
- printk(KERN_INFO "Serial port locked ON by debugger !\n");
- if (via_modem && channel_node != 0) {
- unsigned int t0;
-
- pmac_call_feature(
- PMAC_FTR_MODEM_ENABLE,
- channel_node, 0, 1);
- printk(KERN_INFO "Modem powered up by debugger !\n");
- t0 = get_tbl();
- timeout = 3 * tb_ticks_per_sec;
- if (timeout == 0)
- /* assume 25MHz if tb_ticks_per_sec not set */
- timeout = 75000000;
- while (get_tbl() - t0 < timeout)
- eieio();
- }
- /* use the B channel if requested */
- if (xmon_use_sccb) {
- sccc = (volatile unsigned char *)
- ((unsigned long)sccc & ~0x20);
- sccd = sccc + 0x10;
- }
- for (i = 20000; i != 0; --i) {
- x = *sccc; eieio();
- }
- *sccc = 9; eieio(); /* reset A or B side */
- *sccc = ((unsigned long)sccc & 0x20)? 0x80: 0x40; eieio();
- for (i = 0; i < sizeof(scc_inittab); ++i) {
- *sccc = scc_inittab[i];
- eieio();
- }
- }
- scc_initialized = 1;
- if (via_modem) {
- for (;;) {
- xmon_write("ATE1V1\r", 7);
- if (xmon_expect("OK", 5)) {
- xmon_write("ATA\r", 4);
- if (xmon_expect("CONNECT", 40))
- break;
- }
- xmon_write("+++", 3);
- xmon_expect("OK", 3);
- }
- }
-}
-
-void xmon_enter(void)
-{
-#ifdef CONFIG_ADB_PMU
- if (_machine == _MACH_Pmac) {
- pmu_suspend();
- }
-#endif
-}
-
-void xmon_leave(void)
-{
-#ifdef CONFIG_ADB_PMU
- if (_machine == _MACH_Pmac) {
- pmu_resume();
- }
-#endif
-}
Index: linux-serialfix/arch/powerpc/xmon/start_64.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/xmon/start_64.c 2005-11-23 16:54:13.000000000 +1100
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 1996 Paul Mackerras.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <asm/machdep.h>
-#include <asm/udbg.h>
-#include "nonstdio.h"
-
-void xmon_map_scc(void)
-{
-}
-
-int xmon_write(void *ptr, int nb)
-{
- return udbg_write(ptr, nb);
-}
-
-int xmon_readchar(void)
-{
- if (udbg_getc)
- return udbg_getc();
- return -1;
-}
-
-int xmon_read_poll(void)
-{
- if (udbg_getc_poll)
- return udbg_getc_poll();
- return -1;
-}
Index: linux-serialfix/arch/powerpc/xmon/start_8xx.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/xmon/start_8xx.c 2005-11-23 16:54:13.000000000 +1100
+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
@@ -1,44 +0,0 @@
-/*
- * Copyright (C) 1996 Paul Mackerras.
- * Copyright (C) 2000 Dan Malek.
- * Quick hack of Paul's code to make XMON work on 8xx processors. Lots
- * of assumptions, like the SMC1 is used, it has been initialized by the
- * loader at some point, and we can just stuff and suck bytes.
- * We rely upon the 8xx uart driver to support us, as the interface
- * changes between boot up and operational phases of the kernel.
- */
-#include <linux/string.h>
-#include <asm/machdep.h>
-#include <asm/io.h>
-#include <asm/page.h>
-#include <linux/kernel.h>
-#include <asm/8xx_immap.h>
-#include <asm/mpc8xx.h>
-#include <asm/commproc.h>
-#include "nonstdio.h"
-
-extern int xmon_8xx_write(char *str, int nb);
-extern int xmon_8xx_read_poll(void);
-extern int xmon_8xx_read_char(void);
-
-void xmon_map_scc(void)
-{
- cpmp = (cpm8xx_t *)&(((immap_t *)IMAP_ADDR)->im_cpm);
-}
-
-void xmon_init_scc(void);
-
-int xmon_write(void *ptr, int nb)
-{
- return(xmon_8xx_write(ptr, nb));
-}
-
-int xmon_readchar(void)
-{
- return xmon_8xx_read_char();
-}
-
-int xmon_read_poll(void)
-{
- return(xmon_8xx_read_poll());
-}
Index: linux-serialfix/include/asm-powerpc/btext.h
===================================================================
--- linux-serialfix.orig/include/asm-powerpc/btext.h 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/include/asm-powerpc/btext.h 2005-11-23 16:54:25.000000000 +1100
@@ -7,21 +7,22 @@
#define __PPC_BTEXT_H
#ifdef __KERNEL__
-extern void btext_clearscreen(void);
-extern void btext_flushscreen(void);
-
-extern int boot_text_mapped;
-
-extern int btext_initialize(struct device_node *np);
-
-extern void map_boot_text(void);
-extern void init_boot_display(void);
+extern int btext_find_display(int allow_nonstdout);
extern void btext_update_display(unsigned long phys, int width, int height,
int depth, int pitch);
+extern void btext_setup_display(int width, int height, int depth, int pitch,
+ unsigned long address);
+extern void btext_prepare_BAT(void);
+extern void btext_unmap(void);
extern void btext_drawchar(char c);
extern void btext_drawstring(const char *str);
extern void btext_drawhex(unsigned long v);
+extern void btext_drawtext(const char *c, unsigned int len);
+
+extern void btext_clearscreen(void);
+extern void btext_flushscreen(void);
+extern void btext_flushline(void);
#endif /* __KERNEL__ */
#endif /* __PPC_BTEXT_H */
Index: linux-serialfix/include/asm-powerpc/udbg.h
===================================================================
--- linux-serialfix.orig/include/asm-powerpc/udbg.h 2005-11-23 16:54:25.000000000 +1100
+++ linux-serialfix/include/asm-powerpc/udbg.h 2005-11-23 16:54:25.000000000 +1100
@@ -13,8 +13,8 @@
#include <linux/compiler.h>
#include <linux/init.h>
-extern void (*udbg_putc)(unsigned char c);
-extern unsigned char (*udbg_getc)(void);
+extern void (*udbg_putc)(char c);
+extern char (*udbg_getc)(void);
extern int (*udbg_getc_poll)(void);
extern void udbg_puts(const char *s);
@@ -30,5 +30,8 @@ extern unsigned int udbg_probe_uart_spee
unsigned int clock);
struct device_node;
-extern void udbg_init_scc(struct device_node *np);
+extern void udbg_scc_init(int force_scc);
+extern int udbg_adb_init(int force_btext);
+extern void udbg_adb_init_early(void);
+
#endif /* _ASM_POWERPC_UDBG_H */
Index: linux-serialfix/arch/powerpc/kernel/setup_64.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/setup_64.c 2005-11-23 16:54:25.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/setup_64.c 2005-11-23 16:54:25.000000000 +1100
@@ -466,10 +466,6 @@ void __init setup_system(void)
*/
finish_device_tree();
-#ifdef CONFIG_BOOTX_TEXT
- init_boot_display();
-#endif
-
/*
* Initialize xmon
*/
Index: linux-serialfix/arch/powerpc/platforms/powermac/feature.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/powermac/feature.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/powermac/feature.c 2005-11-23 16:54:25.000000000 +1100
@@ -2596,6 +2596,8 @@ found:
*/
static void __init probe_uninorth(void)
{
+ u32 *addrp;
+ phys_addr_t address;
unsigned long actrl;
/* Locate core99 Uni-N */
@@ -2605,20 +2607,23 @@ static void __init probe_uninorth(void)
uninorth_node = of_find_node_by_name(NULL, "u3");
uninorth_u3 = 1;
}
- if (uninorth_node && uninorth_node->n_addrs > 0) {
- unsigned long address = uninorth_node->addrs[0].address;
- uninorth_base = ioremap(address, 0x40000);
- uninorth_rev = in_be32(UN_REG(UNI_N_VERSION));
- if (uninorth_u3)
- u3_ht = ioremap(address + U3_HT_CONFIG_BASE, 0x1000);
- } else
- uninorth_node = NULL;
+ if (uninorth_node == NULL)
+ return;
- if (!uninorth_node)
+ addrp = (u32 *)get_property(uninorth_node, "reg", NULL);
+ if (addrp == NULL)
+ return;
+ address = of_translate_address(uninorth_node, addrp);
+ if (address == 0)
return;
+ uninorth_base = ioremap(address, 0x40000);
+ uninorth_rev = in_be32(UN_REG(UNI_N_VERSION));
+ if (uninorth_u3)
+ u3_ht = ioremap(address + U3_HT_CONFIG_BASE, 0x1000);
- printk(KERN_INFO "Found %s memory controller & host bridge, revision: %d\n",
- uninorth_u3 ? "U3" : "UniNorth", uninorth_rev);
+ printk(KERN_INFO "Found %s memory controller & host bridge,"
+ " revision: %d\n", uninorth_u3 ? "U3" : "UniNorth",
+ uninorth_rev);
printk(KERN_INFO "Mapped at 0x%08lx\n", (unsigned long)uninorth_base);
/* Set the arbitrer QAck delay according to what Apple does
@@ -2642,18 +2647,17 @@ static void __init probe_one_macio(const
{
struct device_node* node;
int i;
- volatile u32 __iomem * base;
- u32* revp;
+ volatile u32 __iomem *base;
+ u32 *addrp, *revp;
+ phys_addr_t addr;
+ u64 size;
- node = find_devices(name);
- if (!node || !node->n_addrs)
- return;
- if (compat)
- do {
- if (device_is_compatible(node, compat))
- break;
- node = node->next;
- } while (node);
+ for (node = NULL; (node = of_find_node_by_name(node, name)) != NULL;) {
+ if (!compat)
+ break;
+ if (device_is_compatible(node, compat))
+ break;
+ }
if (!node)
return;
for(i=0; i<MAX_MACIO_CHIPS; i++) {
@@ -2662,14 +2666,28 @@ static void __init probe_one_macio(const
if (macio_chips[i].of_node == node)
return;
}
+
if (i >= MAX_MACIO_CHIPS) {
printk(KERN_ERR "pmac_feature: Please increase MAX_MACIO_CHIPS !\n");
printk(KERN_ERR "pmac_feature: %s skipped\n", node->full_name);
return;
}
- base = ioremap(node->addrs[0].address, node->addrs[0].size);
+ addrp = of_get_pci_address(node, 0, &size);
+ if (addrp == NULL) {
+ printk(KERN_ERR "pmac_feature: %s: can't find base !\n",
+ node->full_name);
+ return;
+ }
+ addr = of_translate_address(node, addrp);
+ if (addr == 0) {
+ printk(KERN_ERR "pmac_feature: %s, can't translate base !\n",
+ node->full_name);
+ return;
+ }
+ base = ioremap(addr, (unsigned long)size);
if (!base) {
- printk(KERN_ERR "pmac_feature: Can't map mac-io chip !\n");
+ printk(KERN_ERR "pmac_feature: %s, can't map mac-io chip !\n",
+ node->full_name);
return;
}
if (type == macio_keylargo) {
Index: linux-serialfix/arch/powerpc/platforms/powermac/low_i2c.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/powermac/low_i2c.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/powermac/low_i2c.c 2005-11-23 16:54:25.000000000 +1100
@@ -36,7 +36,7 @@
#ifdef DEBUG
#define DBG(x...) do {\
- printk(KERN_DEBUG "KW:" x); \
+ printk(KERN_DEBUG "low_i2c:" x); \
} while(0)
#else
#define DBG(x...)
@@ -342,7 +342,7 @@ static int keywest_low_i2c_func(struct l
static void keywest_low_i2c_add(struct device_node *np)
{
struct low_i2c_host *host = find_low_i2c_host(NULL);
- u32 *psteps, *prate, steps, aoffset = 0;
+ u32 *psteps, *prate, *addrp, steps;
struct device_node *parent;
if (host == NULL) {
@@ -352,6 +352,16 @@ static void keywest_low_i2c_add(struct d
}
memset(host, 0, sizeof(*host));
+ /* Apple is kind enough to provide a valid AAPL,address property
+ * on all i2c keywest nodes so far ... we would have to fallback
+ * to macio parsing if that wasn't the case
+ */
+ addrp = (u32 *)get_property(np, "AAPL,address", NULL);
+ if (addrp == NULL) {
+ printk(KERN_ERR "low_i2c: Can't find address for %s\n",
+ np->full_name);
+ return;
+ }
init_MUTEX(&host->mutex);
host->np = of_node_get(np);
psteps = (u32 *)get_property(np, "AAPL,address-step", NULL);
@@ -360,12 +370,10 @@ static void keywest_low_i2c_add(struct d
steps >>= 1;
parent = of_get_parent(np);
host->num_channels = 1;
- if (parent && parent->name[0] == 'u') {
+ if (parent && parent->name[0] == 'u')
host->num_channels = 2;
- aoffset = 3;
- }
/* Select interface rate */
- host->speed = KW_I2C_MODE_100KHZ;
+ host->speed = KW_I2C_MODE_25KHZ;
prate = (u32 *)get_property(np, "AAPL,i2c-rate", NULL);
if (prate) switch(*prate) {
case 100:
@@ -379,9 +387,12 @@ static void keywest_low_i2c_add(struct d
break;
}
+ printk(KERN_INFO "low_i2c: Bus %s found at 0x%08x, %d channels,"
+ " speed = %d KHz\n",
+ np->full_name, *addrp, host->num_channels, prate ? *prate : 25);
+
host->mode = pmac_low_i2c_mode_std;
- host->base = ioremap(np->addrs[0].address + aoffset,
- np->addrs[0].size);
+ host->base = ioremap((*addrp), 0x1000);
host->func = keywest_low_i2c_func;
}
Index: linux-serialfix/arch/powerpc/platforms/powermac/pic.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/powermac/pic.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/powermac/pic.c 2005-11-23 16:54:25.000000000 +1100
@@ -459,7 +459,7 @@ void __init pmac_pic_init(void)
mpic_setup_cascade(irqctrler2->intrs[0].line,
pmac_u3_cascade, mpic2);
}
-#if defined(CONFIG_XMON) && defined(CONFIG_PPC32)
+#ifdef CONFIG_XMON
{
struct device_node* pswitch;
int nmi_irq;
Index: linux-serialfix/arch/powerpc/platforms/pseries/lpar.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/pseries/lpar.c 2005-11-23 16:54:25.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/pseries/lpar.c 2005-11-23 16:54:25.000000000 +1100
@@ -61,7 +61,7 @@ extern void pSeries_find_serial_port(voi
int vtermno; /* virtual terminal# for udbg */
#define __ALIGNED__ __attribute__((__aligned__(sizeof(long))))
-static void udbg_hvsi_putc(unsigned char c)
+static void udbg_hvsi_putc(char c)
{
/* packet's seqno isn't used anyways */
uint8_t packet[] __ALIGNED__ = { 0xff, 5, 0, 0, c };
@@ -112,7 +112,7 @@ static int udbg_hvsi_getc_poll(void)
return ch;
}
-static unsigned char udbg_hvsi_getc(void)
+static char udbg_hvsi_getc(void)
{
int ch;
for (;;) {
@@ -128,7 +128,7 @@ static unsigned char udbg_hvsi_getc(void
}
}
-static void udbg_putcLP(unsigned char c)
+static void udbg_putcLP(char c)
{
char buf[16];
unsigned long rc;
@@ -173,7 +173,7 @@ static int udbg_getc_pollLP(void)
return ch;
}
-static unsigned char udbg_getcLP(void)
+static char udbg_getcLP(void)
{
int ch;
for (;;) {
Index: linux-serialfix/arch/powerpc/kernel/head_32.S
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/head_32.S 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/head_32.S 2005-11-23 16:54:25.000000000 +1100
@@ -153,6 +153,9 @@ __after_mmu_off:
bl flush_tlbs
bl initial_bats
+#if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT)
+ bl setup_disp_bat
+#endif
/*
* Call setup_cpu for CPU 0 and initialize 6xx Idle
@@ -1306,6 +1309,32 @@ initial_bats:
blr
+#if !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT)
+setup_disp_bat:
+ /*
+ * setup the display bat prepared for us in prom.c
+ */
+ mflr r8
+ bl reloc_offset
+ mtlr r8
+ addis r8,r3,disp_BAT@ha
+ addi r8,r8,disp_BAT@l
+ cmpwi cr0,r8,0
+ beqlr
+ lwz r11,0(r8)
+ lwz r8,4(r8)
+ mfspr r9,SPRN_PVR
+ rlwinm r9,r9,16,16,31 /* r9 = 1 for 601, 4 for 604 */
+ cmpwi 0,r9,1
+ beq 1f
+ mtspr SPRN_DBAT3L,r8
+ mtspr SPRN_DBAT3U,r11
+ blr
+1: mtspr SPRN_IBAT3L,r8
+ mtspr SPRN_IBAT3U,r11
+ blr
+#endif /* !defined(CONFIG_APUS) && defined(CONFIG_BOOTX_TEXT) */
+
#ifdef CONFIG_8260
/* Jump into the system reset for the rom.
* We first disable the MMU, and then jump to the ROM reset address.
Index: linux-serialfix/arch/powerpc/mm/init_32.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/mm/init_32.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/powerpc/mm/init_32.c 2005-11-23 16:54:25.000000000 +1100
@@ -188,6 +188,11 @@ void __init MMU_init(void)
if (ppc_md.progress)
ppc_md.progress("MMU:exit", 0x211);
+
+ /* From now on, btext is no longer BAT mapped if it was at all */
+#ifdef CONFIG_BOOTX_TEXT
+ btext_unmap();
+#endif
}
/* This is only called until mem_init is done. */
Index: linux-serialfix/drivers/i2c/busses/i2c-keywest.c
===================================================================
--- linux-serialfix.orig/drivers/i2c/busses/i2c-keywest.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/drivers/i2c/busses/i2c-keywest.c 2005-11-23 16:54:25.000000000 +1100
@@ -505,16 +505,23 @@ static int
create_iface(struct device_node *np, struct device *dev)
{
unsigned long steps;
- unsigned bsteps, tsize, i, nchan, addroffset;
+ unsigned bsteps, tsize, i, nchan;
struct keywest_iface* iface;
- u32 *psteps, *prate;
+ u32 *psteps, *prate, *addrp;
int rc;
- if (np->n_intrs < 1 || np->n_addrs < 1) {
- printk(KERN_ERR "%s: Missing interrupt or address !\n",
+ if (np->n_intrs < 1) {
+ printk(KERN_ERR "%s: Missing interrupt !\n",
np->full_name);
return -ENODEV;
}
+ addrp = (u32 *)get_property(np, "AAPL,address", NULL);
+ if (addrp == NULL) {
+ printk(KERN_ERR "%s: Can't find address !\n",
+ np->full_name);
+ return -ENODEV;
+ }
+
if (pmac_low_i2c_lock(np))
return -ENODEV;
@@ -525,13 +532,10 @@ create_iface(struct device_node *np, str
for (bsteps = 0; (steps & 0x01) == 0; bsteps++)
steps >>= 1;
- if (np->parent->name[0] == 'u') {
+ if (np->parent->name[0] == 'u')
nchan = 2;
- addroffset = 3;
- } else {
- addroffset = 0;
+ else
nchan = 1;
- }
tsize = sizeof(struct keywest_iface) +
(sizeof(struct keywest_chan) + 4) * nchan;
@@ -550,8 +554,7 @@ create_iface(struct device_node *np, str
iface->irq = np->intrs[0].line;
iface->channels = (struct keywest_chan *)
(((unsigned long)(iface + 1) + 3UL) & ~3UL);
- iface->base = ioremap(np->addrs[0].address + addroffset,
- np->addrs[0].size);
+ iface->base = ioremap(*addrp, 0x1000);
if (!iface->base) {
printk(KERN_ERR "i2c-keywest: can't map inteface !\n");
kfree(iface);
Index: linux-serialfix/drivers/macintosh/via-cuda.c
===================================================================
--- linux-serialfix.orig/drivers/macintosh/via-cuda.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/drivers/macintosh/via-cuda.c 2005-11-23 16:54:25.000000000 +1100
@@ -127,39 +127,34 @@ struct adb_driver via_cuda_driver = {
#endif /* CONFIG_ADB */
#ifdef CONFIG_PPC
-int __init
-find_via_cuda(void)
+int __init find_via_cuda(void)
{
- int err;
struct adb_request req;
+ phys_addr_t taddr;
+ u32 *reg;
+ int err;
if (vias != 0)
return 1;
- vias = find_devices("via-cuda");
+ vias = of_find_node_by_name(NULL, "via-cuda");
if (vias == 0)
return 0;
- if (vias->next != 0)
- printk(KERN_WARNING "Warning: only using 1st via-cuda\n");
-
-#if 0
- { int i;
-
- printk("find_via_cuda: node = %p, addrs =", vias->node);
- for (i = 0; i < vias->n_addrs; ++i)
- printk(" %x(%x)", vias->addrs[i].address, vias->addrs[i].size);
- printk(", intrs =");
- for (i = 0; i < vias->n_intrs; ++i)
- printk(" %x", vias->intrs[i].line);
- printk("\n"); }
-#endif
- if (vias->n_addrs != 1 || vias->n_intrs != 1) {
- printk(KERN_ERR "via-cuda: expecting 1 address (%d) and 1 interrupt (%d)\n",
- vias->n_addrs, vias->n_intrs);
- if (vias->n_addrs < 1 || vias->n_intrs < 1)
- return 0;
+ reg = (u32 *)get_property(vias, "reg", NULL);
+ if (reg == NULL) {
+ printk(KERN_ERR "via-cuda: No \"reg\" property !\n");
+ goto fail;
+ }
+ taddr = of_translate_address(vias, reg);
+ if (taddr == 0) {
+ printk(KERN_ERR "via-cuda: Can't translate address !\n");
+ goto fail;
+ }
+ via = ioremap(taddr, 0x2000);
+ if (via == NULL) {
+ printk(KERN_ERR "via-cuda: Can't map address !\n");
+ goto fail;
}
- via = ioremap(vias->addrs->address, 0x2000);
cuda_state = idle;
sys_ctrler = SYS_CTRLER_CUDA;
@@ -185,6 +180,11 @@ find_via_cuda(void)
cuda_poll();
return 1;
+
+ fail:
+ of_node_put(vias);
+ vias = NULL;
+ return 0;
}
#endif /* CONFIG_PPC */
Index: linux-serialfix/drivers/macintosh/via-pmu.c
===================================================================
--- linux-serialfix.orig/drivers/macintosh/via-pmu.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/drivers/macintosh/via-pmu.c 2005-11-23 16:54:25.000000000 +1100
@@ -147,6 +147,7 @@ static struct device_node *vias;
static int pmu_kind = PMU_UNKNOWN;
static int pmu_fully_inited = 0;
static int pmu_has_adb;
+static struct device_node *gpio_node;
static unsigned char __iomem *gpio_reg = NULL;
static int gpio_irq = -1;
static int gpio_irq_enabled = -1;
@@ -295,22 +296,26 @@ static struct backlight_controller pmu_b
};
#endif /* CONFIG_PMAC_BACKLIGHT */
-int
-find_via_pmu(void)
+int __init find_via_pmu(void)
{
+ phys_addr_t taddr;
+ u32 *reg;
+
if (via != 0)
return 1;
- vias = find_devices("via-pmu");
- if (vias == 0)
+ vias = of_find_node_by_name(NULL, "via-pmu");
+ if (vias == NULL)
return 0;
- if (vias->next != 0)
- printk(KERN_WARNING "Warning: only using 1st via-pmu\n");
- if (vias->n_addrs < 1 || vias->n_intrs < 1) {
- printk(KERN_ERR "via-pmu: %d addresses, %d interrupts!\n",
- vias->n_addrs, vias->n_intrs);
- if (vias->n_addrs < 1 || vias->n_intrs < 1)
- return 0;
+ reg = (u32 *)get_property(vias, "reg", NULL);
+ if (reg == NULL) {
+ printk(KERN_ERR "via-pmu: No \"reg\" property !\n");
+ goto fail;
+ }
+ taddr = of_translate_address(vias, reg);
+ if (taddr == 0) {
+ printk(KERN_ERR "via-pmu: Can't translate address !\n");
+ goto fail;
}
spin_lock_init(&pmu_lock);
@@ -331,7 +336,8 @@ find_via_pmu(void)
pmu_kind = PMU_HEATHROW_BASED;
else if (device_is_compatible(vias->parent, "Keylargo")
|| device_is_compatible(vias->parent, "K2-Keylargo")) {
- struct device_node *gpio, *gpiop;
+ struct device_node *gpiop;
+ phys_addr_t gaddr = 0;
pmu_kind = PMU_KEYLARGO_BASED;
pmu_has_adb = (find_type_devices("adb") != NULL);
@@ -341,19 +347,24 @@ find_via_pmu(void)
PMU_INT_TICK |
PMU_INT_ENVIRONMENT;
- gpiop = find_devices("gpio");
- if (gpiop && gpiop->n_addrs) {
- gpio_reg = ioremap(gpiop->addrs->address, 0x10);
- gpio = find_devices("extint-gpio1");
- if (gpio == NULL)
- gpio = find_devices("pmu-interrupt");
- if (gpio && gpio->parent == gpiop && gpio->n_intrs)
- gpio_irq = gpio->intrs[0].line;
+ gpiop = of_find_node_by_name(NULL, "gpio");
+ if (gpiop) {
+ reg = (u32 *)get_property(gpiop, "reg", NULL);
+ if (reg)
+ gaddr = of_translate_address(gpiop, reg);
+ if (gaddr != 0)
+ gpio_reg = ioremap(gaddr, 0x10);
}
+ if (gpio_reg == NULL)
+ printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n");
} else
pmu_kind = PMU_UNKNOWN;
- via = ioremap(vias->addrs->address, 0x2000);
+ via = ioremap(taddr, 0x2000);
+ if (via == NULL) {
+ printk(KERN_ERR "via-pmu: Can't map address !\n");
+ goto fail;
+ }
out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
out_8(&via[IFR], 0x7f); /* clear IFR */
@@ -371,17 +382,19 @@ find_via_pmu(void)
sys_ctrler = SYS_CTRLER_PMU;
return 1;
+ fail:
+ of_node_put(vias);
+ vias = NULL;
+ return 0;
}
#ifdef CONFIG_ADB
-static int
-pmu_probe(void)
+static int pmu_probe(void)
{
return vias == NULL? -ENODEV: 0;
}
-static int __init
-pmu_init(void)
+static int __init pmu_init(void)
{
if (vias == NULL)
return -ENODEV;
@@ -405,7 +418,7 @@ static int __init via_pmu_start(void)
bright_req_2.complete = 1;
batt_req.complete = 1;
-#if defined(CONFIG_PPC32) && !defined(CONFIG_PPC_MERGE)
+#ifndef CONFIG_PPC_MERGE
if (pmu_kind == PMU_KEYLARGO_BASED)
openpic_set_irq_priority(vias->intrs[0].line,
OPENPIC_PRIORITY_DEFAULT + 1);
@@ -418,10 +431,22 @@ static int __init via_pmu_start(void)
return -EAGAIN;
}
- if (pmu_kind == PMU_KEYLARGO_BASED && gpio_irq != -1) {
- if (request_irq(gpio_irq, gpio1_interrupt, 0, "GPIO1 ADB", (void *)0))
- printk(KERN_ERR "pmu: can't get irq %d (GPIO1)\n", gpio_irq);
- gpio_irq_enabled = 1;
+ if (pmu_kind == PMU_KEYLARGO_BASED) {
+ gpio_node = of_find_node_by_name(NULL, "extint-gpio1");
+ if (gpio_node == NULL)
+ gpio_node = of_find_node_by_name(NULL,
+ "pmu-interrupt");
+ if (gpio_node && gpio_node->n_intrs > 0)
+ gpio_irq = gpio_node->intrs[0].line;
+
+ if (gpio_irq != -1) {
+ if (request_irq(gpio_irq, gpio1_interrupt, 0,
+ "GPIO1 ADB", (void *)0))
+ printk(KERN_ERR "pmu: can't get irq %d"
+ " (GPIO1)\n", gpio_irq);
+ else
+ gpio_irq_enabled = 1;
+ }
}
/* Enable interrupts */
@@ -1371,7 +1396,6 @@ next:
}
pmu_done(req);
} else {
-#if defined(CONFIG_XMON) && !defined(CONFIG_PPC64)
if (len == 4 && data[1] == 0x2c) {
extern int xmon_wants_key, xmon_adb_keycode;
if (xmon_wants_key) {
@@ -1379,7 +1403,6 @@ next:
return;
}
}
-#endif /* defined(CONFIG_XMON) && !defined(CONFIG_PPC64) */
#ifdef CONFIG_ADB
/*
* XXX On the [23]400 the PMU gives us an up
Index: linux-serialfix/arch/ppc/kernel/setup.c
===================================================================
--- linux-serialfix.orig/arch/ppc/kernel/setup.c 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/arch/ppc/kernel/setup.c 2005-11-23 16:54:25.000000000 +1100
@@ -744,6 +744,9 @@ void __init setup_arch(char **cmdline_p)
/* so udelay does something sensible, assume <= 1000 bogomips */
loops_per_jiffy = 500000000 / HZ;
+ if (ppc_md.init_early)
+ ppc_md.init_early();
+
#ifdef CONFIG_PPC_MULTIPLATFORM
/* This could be called "early setup arch", it must be done
* now because xmon need it
Index: linux-serialfix/include/asm-ppc/btext.h
===================================================================
--- linux-serialfix.orig/include/asm-ppc/btext.h 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/include/asm-ppc/btext.h 2005-11-23 16:54:25.000000000 +1100
@@ -17,7 +17,7 @@ extern unsigned long disp_BAT[2];
extern boot_infos_t disp_bi;
extern int boot_text_mapped;
-extern void init_boot_display(void);
+extern void btext_init(boot_infos_t *bi);
extern void btext_welcome(void);
extern void btext_prepare_BAT(void);
extern void btext_setup_display(int width, int height, int depth, int pitch,
Index: linux-serialfix/include/asm-ppc/machdep.h
===================================================================
--- linux-serialfix.orig/include/asm-ppc/machdep.h 2005-11-23 16:54:13.000000000 +1100
+++ linux-serialfix/include/asm-ppc/machdep.h 2005-11-23 16:54:25.000000000 +1100
@@ -35,8 +35,10 @@ struct machdep_calls {
int (*get_irq)(struct pt_regs *);
/* A general init function, called by ppc_init in init/main.c.
- May be NULL. */
+ May be NULL. DEPRECATED ! */
void (*init)(void);
+ /* For compatibility with merged platforms */
+ void (*init_early)(void);
void (*restart)(char *cmd);
void (*power_off)(void);
^ permalink raw reply
* [PATCH] powerpc: serial port discovery (#2)
From: Benjamin Herrenschmidt @ 2005-11-23 6:56 UTC (permalink / raw)
To: Paul Mackerras; +Cc: linuxppc64-dev, linuxppc-dev list
This moves the discovery of legacy serial ports to a separate file,
makes it common to ppc32 and ppc64, and reworks it to use the new OF
address translators to get to the ports early. This new version can also
detect some PCI serial cards using legacy chips and will probably match
those discovered port with the default console choice.
Only ppc64 gets udbg still yet, unifying udbg isn't finished yet.
It also adds some speed-probing code to udbg so that the default console
can come up at the same speed it was set to by the firmware.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
This version fixes a bug with setting udbg on LPAR machines. We
need to force CON_ENABLED or the core will not register us because
of the add_preferred_console() calls. That itself triggered a bug
in unregister_console() that crashes when the console list is empty
(patch sent separately to Andrew).
Index: linux-serialfix/arch/powerpc/kernel/legacy_serial.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-serialfix/arch/powerpc/kernel/legacy_serial.c 2005-11-23 17:30:14.000000000 +1100
@@ -0,0 +1,478 @@
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/console.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+#include <asm/mmu.h>
+#include <asm/prom.h>
+#include <asm/serial.h>
+#include <asm/udbg.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc-pci.h>
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(fmt...) do { printk(fmt); } while(0)
+#else
+#define DBG(fmt...) do { } while(0)
+#endif
+
+#define MAX_LEGACY_SERIAL_PORTS 8
+
+static struct plat_serial8250_port
+legacy_serial_ports[MAX_LEGACY_SERIAL_PORTS+1];
+static struct legacy_serial_info {
+ struct device_node *np;
+ unsigned int speed;
+ unsigned int clock;
+ phys_addr_t taddr;
+} legacy_serial_infos[MAX_LEGACY_SERIAL_PORTS];
+static unsigned int legacy_serial_count;
+static int legacy_serial_console = -1;
+
+static int __init add_legacy_port(struct device_node *np, int want_index,
+ int iotype, phys_addr_t base,
+ phys_addr_t taddr, unsigned long irq)
+{
+ u32 *clk, *spd, clock;
+ int index;
+
+ /* get clock freq. if present */
+ clk = (u32 *)get_property(np, "clock-frequency", NULL);
+ clock = clk ? *clk : BASE_BAUD * 16;
+
+ /* get default speed if present */
+ spd = (u32 *)get_property(np, "current-speed", NULL);
+
+ /* If we have a location index, then try to use it */
+ if (want_index >= 0 && want_index < MAX_LEGACY_SERIAL_PORTS)
+ index = want_index;
+ else
+ index = legacy_serial_count;
+
+ /* if our index is still out of range, that mean that
+ * array is full, we could scan for a free slot but that
+ * make little sense to bother, just skip the port
+ */
+ if (index >= MAX_LEGACY_SERIAL_PORTS)
+ return -1;
+ if (index >= legacy_serial_count)
+ legacy_serial_count = index + 1;
+
+ /* Check if there is a port who already claimed our slot */
+ if (legacy_serial_infos[index].np != 0) {
+ /* if we still have some room, move it, else override */
+ if (legacy_serial_count < MAX_LEGACY_SERIAL_PORTS) {
+ printk(KERN_INFO "Moved legacy port %d -> %d\n",
+ index, legacy_serial_count);
+ legacy_serial_ports[legacy_serial_count] =
+ legacy_serial_ports[index];
+ legacy_serial_infos[legacy_serial_count] =
+ legacy_serial_infos[index];
+ legacy_serial_count++;
+ } else {
+ printk(KERN_INFO "Replacing legacy port %d\n", index);
+ }
+ }
+
+ /* Now fill the entry */
+ memset(&legacy_serial_ports[index], 0,
+ sizeof(struct plat_serial8250_port));
+ if (iotype == UPIO_PORT)
+ legacy_serial_ports[index].iobase = base;
+ else
+ legacy_serial_ports[index].membase = (void __iomem *)base;
+ legacy_serial_ports[index].iotype = iotype;
+ legacy_serial_ports[index].uartclk = clock;
+ legacy_serial_ports[index].irq = irq;
+ legacy_serial_ports[index].flags = ASYNC_BOOT_AUTOCONF;
+ legacy_serial_infos[index].taddr = taddr;
+ legacy_serial_infos[index].np = of_node_get(np);
+ legacy_serial_infos[index].clock = clock;
+ legacy_serial_infos[index].speed = spd ? *spd : 0;
+
+ printk(KERN_INFO "Found legacy serial port %d for %s\n",
+ index, np->full_name);
+ printk(KERN_INFO " %s=%llx, taddr=%llx, irq=%lx, clk=%d, speed=%d\n",
+ (iotype == UPIO_PORT) ? "port" : "mem",
+ (unsigned long long)base, (unsigned long long)taddr, irq,
+ legacy_serial_ports[index].uartclk,
+ legacy_serial_infos[index].speed);
+
+ return index;
+}
+
+static int __init add_legacy_isa_port(struct device_node *np,
+ struct device_node *isa_bridge)
+{
+ u32 *reg;
+ char *typep;
+ int index = -1;
+ phys_addr_t taddr;
+
+ /* Get the ISA port number */
+ reg = (u32 *)get_property(np, "reg", NULL);
+ if (reg == NULL)
+ return -1;
+
+ /* Verify it's an IO port, we don't support anything else */
+ if (!(reg[0] & 0x00000001))
+ return -1;
+
+ /* Now look for an "ibm,aix-loc" property that gives us ordering
+ * if any...
+ */
+ typep = (char *)get_property(np, "ibm,aix-loc", NULL);
+
+ /* If we have a location index, then use it */
+ if (typep && *typep == 'S')
+ index = simple_strtol(typep+1, NULL, 0) - 1;
+
+ /* Translate ISA address */
+ taddr = of_translate_address(np, reg);
+
+ /* Add port, irq will be dealt with later */
+ return add_legacy_port(np, index, UPIO_PORT, reg[1], taddr, NO_IRQ);
+
+}
+
+static int __init add_legacy_pci_port(struct device_node *np,
+ struct device_node *pci_dev)
+{
+ phys_addr_t addr, base;
+ u32 *addrp;
+ int iotype, index = -1;
+
+#if 0
+ /* We only support ports that have a clock frequency properly
+ * encoded in the device-tree (that is have an fcode). Anything
+ * else can't be used that early and will be normally probed by
+ * the generic 8250_pci driver later on.
+ */
+ if (get_property(np, "clock-frequency", NULL) == NULL)
+ return -1;
+#endif
+
+ /* Get the PCI address. Assume BAR 0 */
+ addrp = of_get_pci_address(pci_dev, 0, NULL);
+ if (addrp == NULL)
+ return -1;
+
+ /* We only support BAR 0 for now */
+ iotype = (addrp[0] & 0x02000000) ? UPIO_MEM : UPIO_PORT;
+ addr = of_translate_address(pci_dev, addrp);
+
+ /* Set the IO base to the same as the translated address for MMIO,
+ * or to the domain local IO base for PIO (it will be fixed up later)
+ */
+ if (iotype == UPIO_MEM)
+ base = addr;
+ else
+ base = addrp[2];
+
+ /* Try to guess an index... If we have subdevices of the pci dev,
+ * we get to their "reg" property
+ */
+ if (np != pci_dev) {
+ u32 *reg = (u32 *)get_property(np, "reg", NULL);
+ if (reg && (*reg < 4))
+ index = legacy_serial_count + *reg;
+ }
+
+ /* Add port, irq will be dealt with later. We passed a translated
+ * IO port value. It will be fixed up later along with the irq
+ */
+ return add_legacy_port(np, index, iotype, base, addr, NO_IRQ);
+}
+
+/*
+ * This is called very early, as part of setup_system() or eventually
+ * setup_arch(), basically before anything else in this file. This function
+ * will try to build a list of all the available 8250-compatible serial ports
+ * in the machine using the Open Firmware device-tree. It currently only deals
+ * with ISA and PCI busses but could be extended. It allows a very early boot
+ * console to be initialized, that list is also used later to provide 8250 with
+ * the machine non-PCI ports and to properly pick the default console port
+ */
+void __init find_legacy_serial_ports(void)
+{
+ struct device_node *np, *stdout;
+ char *path;
+ int index;
+
+ DBG(" -> find_legacy_serial_port()\n");
+
+ /* Now find out if one of these is out firmware console */
+ path = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+ if (path == NULL) {
+ DBG(" no linux,stdout-path !\n");
+ return;
+ }
+ stdout = of_find_node_by_path(path);
+ if (stdout) {
+ DBG("stdout is %s\n", stdout->full_name);
+ }
+
+ /* First fill our array with ISA ports */
+ for (np = NULL; (np = of_find_node_by_type(np, "serial"));) {
+ struct device_node *isa = of_get_parent(np);
+ if (isa && !strcmp(isa->name, "isa")) {
+ index = add_legacy_isa_port(np, isa);
+ if (index >= 0 && np == stdout)
+ legacy_serial_console = index;
+ }
+ of_node_put(isa);
+ }
+
+ /* Next, try to locate PCI ports */
+ for (np = NULL; (np = of_find_all_nodes(np));) {
+ struct device_node *pci, *parent = of_get_parent(np);
+ if (parent && !strcmp(parent->name, "isa")) {
+ of_node_put(parent);
+ continue;
+ }
+ if (strcmp(np->name, "serial") && strcmp(np->type, "serial")) {
+ of_node_put(parent);
+ continue;
+ }
+ /* Check for known pciclass, and also check wether we have
+ * a device with child nodes for ports or not
+ */
+ if (device_is_compatible(np, "pciclass,0700") ||
+ device_is_compatible(np, "pciclass,070002"))
+ pci = np;
+ else if (device_is_compatible(parent, "pciclass,0700") ||
+ device_is_compatible(parent, "pciclass,070002"))
+ pci = parent;
+ else {
+ of_node_put(parent);
+ continue;
+ }
+ index = add_legacy_pci_port(np, pci);
+ if (index >= 0 && np == stdout)
+ legacy_serial_console = index;
+ of_node_put(parent);
+ }
+
+ DBG("legacy_serial_console = %d\n", legacy_serial_console);
+
+ /* udbg is 64 bits only for now, that will change soon though ... */
+#ifdef CONFIG_PPC64
+ while (legacy_serial_console >= 0) {
+ struct legacy_serial_info *info =
+ &legacy_serial_infos[legacy_serial_console];
+ void __iomem *addr;
+
+ if (info->taddr == 0)
+ break;
+ addr = ioremap(info->taddr, 0x1000);
+ if (addr == NULL)
+ break;
+ if (info->speed == 0)
+ info->speed = udbg_probe_uart_speed(addr, info->clock);
+ DBG("default console speed = %d\n", info->speed);
+ udbg_init_uart(addr, info->speed, info->clock);
+ break;
+ }
+#endif /* CONFIG_PPC64 */
+
+ DBG(" <- find_legacy_serial_port()\n");
+}
+
+static struct platform_device serial_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = legacy_serial_ports,
+ },
+};
+
+static void __init fixup_port_irq(int index,
+ struct device_node *np,
+ struct plat_serial8250_port *port)
+{
+ DBG("fixup_port_irq(%d)\n", index);
+
+ /* Check for interrupts in that node */
+ if (np->n_intrs > 0) {
+ port->irq = np->intrs[0].line;
+ DBG(" port %d (%s), irq=%d\n",
+ index, np->full_name, port->irq);
+ return;
+ }
+
+ /* Check for interrupts in the parent */
+ np = of_get_parent(np);
+ if (np == NULL)
+ return;
+
+ if (np->n_intrs > 0) {
+ port->irq = np->intrs[0].line;
+ DBG(" port %d (%s), irq=%d\n",
+ index, np->full_name, port->irq);
+ }
+ of_node_put(np);
+}
+
+static void __init fixup_port_pio(int index,
+ struct device_node *np,
+ struct plat_serial8250_port *port)
+{
+ struct pci_controller *hose;
+
+ DBG("fixup_port_pio(%d)\n", index);
+
+ hose = pci_find_hose_for_OF_device(np);
+ if (hose) {
+ unsigned long offset = (unsigned long)hose->io_base_virt -
+#ifdef CONFIG_PPC64
+ pci_io_base;
+#else
+ isa_io_base;
+#endif
+ DBG("port %d, IO %lx -> %lx\n",
+ index, port->iobase, port->iobase + offset);
+ port->iobase += offset;
+ }
+}
+
+/*
+ * This is called as an arch initcall, hopefully before the PCI bus is
+ * probed and/or the 8250 driver loaded since we need to register our
+ * platform devices before 8250 PCI ones are detected as some of them
+ * must properly "override" the platform ones.
+ *
+ * This function fixes up the interrupt value for platform ports as it
+ * couldn't be done earlier before interrupt maps have been parsed. It
+ * also "corrects" the IO address for PIO ports for the same reason,
+ * since earlier, the PHBs virtual IO space wasn't assigned yet. It then
+ * registers all those platform ports for use by the 8250 driver when it
+ * finally loads.
+ */
+static int __init serial_dev_init(void)
+{
+ int i;
+
+ if (legacy_serial_count == 0)
+ return -ENODEV;
+
+ /*
+ * Before we register the platfrom serial devices, we need
+ * to fixup their interrutps and their IO ports.
+ */
+ DBG("Fixing serial ports interrupts and IO ports ...\n");
+
+ for (i = 0; i < legacy_serial_count; i++) {
+ struct plat_serial8250_port *port = &legacy_serial_ports[i];
+ struct device_node *np = legacy_serial_infos[i].np;
+
+ if (port->irq == NO_IRQ)
+ fixup_port_irq(i, np, port);
+ if (port->iotype == UPIO_PORT)
+ fixup_port_pio(i, np, port);
+ }
+
+ DBG("Registering platform serial ports\n");
+
+ return platform_device_register(&serial_device);
+}
+arch_initcall(serial_dev_init);
+
+
+/*
+ * This is called very early, as part of console_init() (typically just after
+ * time_init()). This function is respondible for trying to find a good
+ * default console on serial ports. It tries to match the open firmware
+ * default output with one of the available serial console drivers, either
+ * one of the platform serial ports that have been probed earlier by
+ * find_legacy_serial_ports() or some more platform specific ones.
+ */
+static int __init check_legacy_serial_console(void)
+{
+ struct device_node *prom_stdout = NULL;
+ int speed = 0, offset = 0;
+ char *name;
+ u32 *spd;
+
+ DBG(" -> check_legacy_serial_console()\n");
+
+ /* The user has requested a console so this is already set up. */
+ if (strstr(saved_command_line, "console=")) {
+ DBG(" console was specified !\n");
+ return -EBUSY;
+ }
+
+ if (!of_chosen) {
+ DBG(" of_chosen is NULL !\n");
+ return -ENODEV;
+ }
+ /* We are getting a weird phandle from OF ... */
+ /* ... So use the full path instead */
+ name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+ if (name == NULL) {
+ DBG(" no linux,stdout-path !\n");
+ return -ENODEV;
+ }
+ prom_stdout = of_find_node_by_path(name);
+ if (!prom_stdout) {
+ DBG(" can't find stdout package %s !\n", name);
+ return -ENODEV;
+ }
+ DBG("stdout is %s\n", prom_stdout->full_name);
+
+ name = (char *)get_property(prom_stdout, "name", NULL);
+ if (!name) {
+ DBG(" stdout package has no name !\n");
+ goto not_found;
+ }
+ spd = (u32 *)get_property(prom_stdout, "current-speed", NULL);
+ if (spd)
+ speed = *spd;
+
+ if (0)
+ ;
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+ else if (strcmp(name, "serial") == 0) {
+ int i;
+ /* Look for it in probed array */
+ for (i = 0; i < legacy_serial_count; i++) {
+ if (prom_stdout != legacy_serial_infos[i].np)
+ continue;
+ offset = i;
+ speed = legacy_serial_infos[i].speed;
+ break;
+ }
+ if (i >= legacy_serial_count)
+ goto not_found;
+ }
+#endif /* CONFIG_SERIAL_8250_CONSOLE */
+#ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE
+ else if (strcmp(name, "ch-a") == 0)
+ offset = 0;
+ else if (strcmp(name, "ch-b") == 0)
+ offset = 1;
+#endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */
+ else
+ goto not_found;
+ of_node_put(prom_stdout);
+
+ DBG("Found serial console at ttyS%d\n", offset);
+
+ if (speed) {
+ static char __initdata opt[16];
+ sprintf(opt, "%d", speed);
+ return add_preferred_console("ttyS", offset, opt);
+ } else
+ return add_preferred_console("ttyS", offset, NULL);
+
+ not_found:
+ DBG("No preferred console found !\n");
+ of_node_put(prom_stdout);
+ return -ENODEV;
+}
+console_initcall(check_legacy_serial_console);
+
Index: linux-serialfix/arch/powerpc/kernel/Makefile
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/Makefile 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/Makefile 2005-11-23 17:40:02.000000000 +1100
@@ -32,10 +32,6 @@ obj-$(CONFIG_RTAS_PROC) += rtas-proc.o
obj-$(CONFIG_LPARCFG) += lparcfg.o
obj-$(CONFIG_IBMVIO) += vio.o
obj-$(CONFIG_GENERIC_TBSYNC) += smp-tbsync.o
-obj-$(CONFIG_PPC_PSERIES) += udbg_16550.o
-obj-$(CONFIG_PPC_MAPLE) += udbg_16550.o
-udbgscc-$(CONFIG_PPC64) := udbg_scc.o
-obj-$(CONFIG_PPC_PMAC) += $(udbgscc-y)
obj64-$(CONFIG_PPC_MULTIPLATFORM) += nvram_64.o
ifeq ($(CONFIG_PPC_MERGE),y)
@@ -58,14 +54,15 @@ obj-$(CONFIG_BOOTX_TEXT) += btext.o
obj-$(CONFIG_6xx) += idle_6xx.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_KPROBES) += kprobes.o
-
+obj-$(CONFIG_PPC_MULTIPLATFORM) += legacy_serial.o
+obj64-$(CONFIG_PPC_MULTIPLATFORM) += udbg_16550.o
+obj64-$(CONFIG_PPC_PMAC) += udbg_scc.o
module-$(CONFIG_PPC64) += module_64.o
obj-$(CONFIG_MODULES) += $(module-y)
pci64-$(CONFIG_PPC64) += pci_64.o pci_dn.o pci_iommu.o \
pci_direct_iommu.o iomap.o
obj-$(CONFIG_PCI) += $(pci64-y)
-
kexec64-$(CONFIG_PPC64) += machine_kexec_64.o
obj-$(CONFIG_KEXEC) += $(kexec64-y)
Index: linux-serialfix/arch/powerpc/kernel/setup-common.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/setup-common.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/setup-common.c 2005-11-23 17:30:14.000000000 +1100
@@ -294,129 +294,6 @@ struct seq_operations cpuinfo_op = {
.show = show_cpuinfo,
};
-#ifdef CONFIG_PPC_MULTIPLATFORM
-static int __init set_preferred_console(void)
-{
- struct device_node *prom_stdout = NULL;
- char *name;
- u32 *spd;
- int offset = 0;
-
- DBG(" -> set_preferred_console()\n");
-
- /* The user has requested a console so this is already set up. */
- if (strstr(saved_command_line, "console=")) {
- DBG(" console was specified !\n");
- return -EBUSY;
- }
-
- if (!of_chosen) {
- DBG(" of_chosen is NULL !\n");
- return -ENODEV;
- }
- /* We are getting a weird phandle from OF ... */
- /* ... So use the full path instead */
- name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
- if (name == NULL) {
- DBG(" no linux,stdout-path !\n");
- return -ENODEV;
- }
- prom_stdout = of_find_node_by_path(name);
- if (!prom_stdout) {
- DBG(" can't find stdout package %s !\n", name);
- return -ENODEV;
- }
- DBG("stdout is %s\n", prom_stdout->full_name);
-
- name = (char *)get_property(prom_stdout, "name", NULL);
- if (!name) {
- DBG(" stdout package has no name !\n");
- goto not_found;
- }
- spd = (u32 *)get_property(prom_stdout, "current-speed", NULL);
-
- if (0)
- ;
-#ifdef CONFIG_SERIAL_8250_CONSOLE
- else if (strcmp(name, "serial") == 0) {
- int i;
- u32 *reg = (u32 *)get_property(prom_stdout, "reg", &i);
- if (i > 8) {
- switch (reg[1]) {
- case 0x3f8:
- offset = 0;
- break;
- case 0x2f8:
- offset = 1;
- break;
- case 0x898:
- offset = 2;
- break;
- case 0x890:
- offset = 3;
- break;
- default:
- /* We dont recognise the serial port */
- goto not_found;
- }
- }
- }
-#endif /* CONFIG_SERIAL_8250_CONSOLE */
-#ifdef CONFIG_PPC_PSERIES
- else if (strcmp(name, "vty") == 0) {
- u32 *reg = (u32 *)get_property(prom_stdout, "reg", NULL);
- char *compat = (char *)get_property(prom_stdout, "compatible", NULL);
-
- if (reg && compat && (strcmp(compat, "hvterm-protocol") == 0)) {
- /* Host Virtual Serial Interface */
- switch (reg[0]) {
- case 0x30000000:
- offset = 0;
- break;
- case 0x30000001:
- offset = 1;
- break;
- default:
- goto not_found;
- }
- of_node_put(prom_stdout);
- DBG("Found hvsi console at offset %d\n", offset);
- return add_preferred_console("hvsi", offset, NULL);
- } else {
- /* pSeries LPAR virtual console */
- of_node_put(prom_stdout);
- DBG("Found hvc console\n");
- return add_preferred_console("hvc", 0, NULL);
- }
- }
-#endif /* CONFIG_PPC_PSERIES */
-#ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE
- else if (strcmp(name, "ch-a") == 0)
- offset = 0;
- else if (strcmp(name, "ch-b") == 0)
- offset = 1;
-#endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */
- else
- goto not_found;
- of_node_put(prom_stdout);
-
- DBG("Found serial console at ttyS%d\n", offset);
-
- if (spd) {
- static char __initdata opt[16];
- sprintf(opt, "%d", *spd);
- return add_preferred_console("ttyS", offset, opt);
- } else
- return add_preferred_console("ttyS", offset, NULL);
-
- not_found:
- DBG("No preferred console found !\n");
- of_node_put(prom_stdout);
- return -ENODEV;
-}
-console_initcall(set_preferred_console);
-#endif /* CONFIG_PPC_MULTIPLATFORM */
-
void __init check_for_initrd(void)
{
#ifdef CONFIG_BLK_DEV_INITRD
Index: linux-serialfix/arch/powerpc/kernel/setup_64.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/setup_64.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/setup_64.c 2005-11-23 17:40:02.000000000 +1100
@@ -451,6 +451,15 @@ void __init setup_system(void)
*/
ppc_md.init_early();
+ /*
+ * We can discover serial ports now since the above did setup the
+ * hash table management for us, thus ioremap works. We do that early
+ * so that further code can be debugged
+ */
+#ifdef CONFIG_PPC_MULTIPLATFORM
+ find_legacy_serial_ports();
+#endif
+
/*
* "Finish" the device-tree, that is do the actual parsing of
* some of the properties like the interrupt map
@@ -649,187 +658,6 @@ void ppc64_terminate_msg(unsigned int sr
printk("[terminate]%04x %s\n", src, msg);
}
-#ifndef CONFIG_PPC_ISERIES
-/*
- * This function can be used by platforms to "find" legacy serial ports.
- * It works for "serial" nodes under an "isa" node, and will try to
- * respect the "ibm,aix-loc" property if any. It works with up to 8
- * ports.
- */
-
-#define MAX_LEGACY_SERIAL_PORTS 8
-static struct plat_serial8250_port serial_ports[MAX_LEGACY_SERIAL_PORTS+1];
-static unsigned int old_serial_count;
-
-void __init generic_find_legacy_serial_ports(u64 *physport,
- unsigned int *default_speed)
-{
- struct device_node *np;
- u32 *sizeprop;
-
- struct isa_reg_property {
- u32 space;
- u32 address;
- u32 size;
- };
- struct pci_reg_property {
- struct pci_address addr;
- u32 size_hi;
- u32 size_lo;
- };
-
- DBG(" -> generic_find_legacy_serial_port()\n");
-
- *physport = 0;
- if (default_speed)
- *default_speed = 0;
-
- np = of_find_node_by_path("/");
- if (!np)
- return;
-
- /* First fill our array */
- for (np = NULL; (np = of_find_node_by_type(np, "serial"));) {
- struct device_node *isa, *pci;
- struct isa_reg_property *reg;
- unsigned long phys_size, addr_size, io_base;
- u32 *rangesp;
- u32 *interrupts, *clk, *spd;
- char *typep;
- int index, rlen, rentsize;
-
- /* Ok, first check if it's under an "isa" parent */
- isa = of_get_parent(np);
- if (!isa || strcmp(isa->name, "isa")) {
- DBG("%s: no isa parent found\n", np->full_name);
- continue;
- }
-
- /* Now look for an "ibm,aix-loc" property that gives us ordering
- * if any...
- */
- typep = (char *)get_property(np, "ibm,aix-loc", NULL);
-
- /* Get the ISA port number */
- reg = (struct isa_reg_property *)get_property(np, "reg", NULL);
- if (reg == NULL)
- goto next_port;
- /* We assume the interrupt number isn't translated ... */
- interrupts = (u32 *)get_property(np, "interrupts", NULL);
- /* get clock freq. if present */
- clk = (u32 *)get_property(np, "clock-frequency", NULL);
- /* get default speed if present */
- spd = (u32 *)get_property(np, "current-speed", NULL);
- /* Default to locate at end of array */
- index = old_serial_count; /* end of the array by default */
-
- /* If we have a location index, then use it */
- if (typep && *typep == 'S') {
- index = simple_strtol(typep+1, NULL, 0) - 1;
- /* if index is out of range, use end of array instead */
- if (index >= MAX_LEGACY_SERIAL_PORTS)
- index = old_serial_count;
- /* if our index is still out of range, that mean that
- * array is full, we could scan for a free slot but that
- * make little sense to bother, just skip the port
- */
- if (index >= MAX_LEGACY_SERIAL_PORTS)
- goto next_port;
- if (index >= old_serial_count)
- old_serial_count = index + 1;
- /* Check if there is a port who already claimed our slot */
- if (serial_ports[index].iobase != 0) {
- /* if we still have some room, move it, else override */
- if (old_serial_count < MAX_LEGACY_SERIAL_PORTS) {
- DBG("Moved legacy port %d -> %d\n", index,
- old_serial_count);
- serial_ports[old_serial_count++] =
- serial_ports[index];
- } else {
- DBG("Replacing legacy port %d\n", index);
- }
- }
- }
- if (index >= MAX_LEGACY_SERIAL_PORTS)
- goto next_port;
- if (index >= old_serial_count)
- old_serial_count = index + 1;
-
- /* Now fill the entry */
- memset(&serial_ports[index], 0, sizeof(struct plat_serial8250_port));
- serial_ports[index].uartclk = clk ? *clk : BASE_BAUD * 16;
- serial_ports[index].iobase = reg->address;
- serial_ports[index].irq = interrupts ? interrupts[0] : 0;
- serial_ports[index].flags = ASYNC_BOOT_AUTOCONF;
-
- DBG("Added legacy port, index: %d, port: %x, irq: %d, clk: %d\n",
- index,
- serial_ports[index].iobase,
- serial_ports[index].irq,
- serial_ports[index].uartclk);
-
- /* Get phys address of IO reg for port 1 */
- if (index != 0)
- goto next_port;
-
- pci = of_get_parent(isa);
- if (!pci) {
- DBG("%s: no pci parent found\n", np->full_name);
- goto next_port;
- }
-
- rangesp = (u32 *)get_property(pci, "ranges", &rlen);
- if (rangesp == NULL) {
- of_node_put(pci);
- goto next_port;
- }
- rlen /= 4;
-
- /* we need the #size-cells of the PCI bridge node itself */
- phys_size = 1;
- sizeprop = (u32 *)get_property(pci, "#size-cells", NULL);
- if (sizeprop != NULL)
- phys_size = *sizeprop;
- /* we need the parent #addr-cells */
- addr_size = prom_n_addr_cells(pci);
- rentsize = 3 + addr_size + phys_size;
- io_base = 0;
- for (;rlen >= rentsize; rlen -= rentsize,rangesp += rentsize) {
- if (((rangesp[0] >> 24) & 0x3) != 1)
- continue; /* not IO space */
- io_base = rangesp[3];
- if (addr_size == 2)
- io_base = (io_base << 32) | rangesp[4];
- }
- if (io_base != 0) {
- *physport = io_base + reg->address;
- if (default_speed && spd)
- *default_speed = *spd;
- }
- of_node_put(pci);
- next_port:
- of_node_put(isa);
- }
-
- DBG(" <- generic_find_legacy_serial_port()\n");
-}
-
-static struct platform_device serial_device = {
- .name = "serial8250",
- .id = PLAT8250_DEV_PLATFORM,
- .dev = {
- .platform_data = serial_ports,
- },
-};
-
-static int __init serial_dev_init(void)
-{
- return platform_device_register(&serial_device);
-}
-arch_initcall(serial_dev_init);
-
-#endif /* CONFIG_PPC_ISERIES */
-
int check_legacy_ioport(unsigned long base_port)
{
if (ppc_md.check_legacy_ioport == NULL)
Index: linux-serialfix/arch/powerpc/kernel/udbg_16550.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/udbg_16550.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/udbg_16550.c 2005-11-23 17:40:02.000000000 +1100
@@ -43,6 +43,8 @@ struct NS16550 {
#define LSR_TEMT 0x40 /* Xmitter empty */
#define LSR_ERR 0x80 /* Error */
+#define LCR_DLAB 0x80
+
static volatile struct NS16550 __iomem *udbg_comport;
static void udbg_550_putc(unsigned char c)
@@ -77,29 +79,70 @@ static unsigned char udbg_550_getc(void)
return 0;
}
-void udbg_init_uart(void __iomem *comport, unsigned int speed)
+void udbg_init_uart(void __iomem *comport, unsigned int speed,
+ unsigned int clock)
{
- u16 dll = speed ? (115200 / speed) : 12;
+ unsigned int dll, base_bauds = clock / 16;
+
+ if (speed == 0)
+ speed = 9600;
+ dll = base_bauds / speed;
if (comport) {
udbg_comport = (struct NS16550 __iomem *)comport;
out_8(&udbg_comport->lcr, 0x00);
out_8(&udbg_comport->ier, 0xff);
out_8(&udbg_comport->ier, 0x00);
- out_8(&udbg_comport->lcr, 0x80); /* Access baud rate */
- out_8(&udbg_comport->dll, dll & 0xff); /* 1 = 115200, 2 = 57600,
- 3 = 38400, 12 = 9600 baud */
- out_8(&udbg_comport->dlm, dll >> 8); /* dll >> 8 which should be zero
- for fast rates; */
- out_8(&udbg_comport->lcr, 0x03); /* 8 data, 1 stop, no parity */
- out_8(&udbg_comport->mcr, 0x03); /* RTS/DTR */
- out_8(&udbg_comport->fcr ,0x07); /* Clear & enable FIFOs */
+ out_8(&udbg_comport->lcr, LCR_DLAB);
+ out_8(&udbg_comport->dll, dll & 0xff);
+ out_8(&udbg_comport->dlm, dll >> 8);
+ /* 8 data, 1 stop, no parity */
+ out_8(&udbg_comport->lcr, 0x03);
+ /* RTS/DTR */
+ out_8(&udbg_comport->mcr, 0x03);
+ /* Clear & enable FIFOs */
+ out_8(&udbg_comport->fcr ,0x07);
udbg_putc = udbg_550_putc;
udbg_getc = udbg_550_getc;
udbg_getc_poll = udbg_550_getc_poll;
}
}
+unsigned int udbg_probe_uart_speed(void __iomem *comport, unsigned int clock)
+{
+ unsigned int dll, dlm, divisor, prescaler, speed;
+ u8 old_lcr;
+ volatile struct NS16550 __iomem *port = comport;
+
+ old_lcr = in_8(&port->lcr);
+
+ /* select divisor latch registers. */
+ out_8(&port->lcr, LCR_DLAB);
+
+ /* now, read the divisor */
+ dll = in_8(&port->dll);
+ dlm = in_8(&port->dlm);
+ divisor = dlm << 8 | dll;
+
+ /* check prescaling */
+ if (in_8(&port->mcr) & 0x80)
+ prescaler = 4;
+ else
+ prescaler = 1;
+
+ /* restore the LCR */
+ out_8(&port->lcr, old_lcr);
+
+ /* calculate speed */
+ speed = (clock / prescaler) / (divisor * 16);
+
+ /* sanity check */
+ if (speed < 9600 || speed > 115200)
+ speed = 9600;
+
+ return speed;
+}
+
#ifdef CONFIG_PPC_MAPLE
void udbg_maple_real_putc(unsigned char c)
{
Index: linux-serialfix/arch/powerpc/platforms/maple/setup.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/maple/setup.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/maple/setup.c 2005-11-23 17:30:14.000000000 +1100
@@ -191,20 +191,6 @@ static void __init maple_init_early(void
*/
hpte_init_native();
- /* Find the serial port */
- generic_find_legacy_serial_ports(&physport, &default_speed);
-
- DBG("phys port addr: %lx\n", (long)physport);
-
- if (physport) {
- void *comport;
- /* Map the uart for udbg. */
- comport = (void *)ioremap(physport, 16);
- udbg_init_uart(comport, default_speed);
-
- DBG("Hello World !\n");
- }
-
/* Setup interrupt mapping options */
ppc64_interrupt_controller = IC_OPEN_PIC;
Index: linux-serialfix/arch/powerpc/platforms/pseries/lpar.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/pseries/lpar.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/pseries/lpar.c 2005-11-23 17:40:02.000000000 +1100
@@ -24,6 +24,7 @@
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/dma-mapping.h>
+#include <linux/console.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/page.h>
@@ -191,7 +192,7 @@ static unsigned char udbg_getcLP(void)
/* call this from early_init() for a working debug console on
* vterm capable LPAR machines
*/
-void udbg_init_debug_lpar(void)
+void __init udbg_init_debug_lpar(void)
{
vtermno = 0;
udbg_putc = udbg_putcLP;
@@ -200,63 +201,54 @@ void udbg_init_debug_lpar(void)
}
/* returns 0 if couldn't find or use /chosen/stdout as console */
-int find_udbg_vterm(void)
+void __init find_udbg_vterm(void)
{
struct device_node *stdout_node;
u32 *termno;
char *name;
- int found = 0;
+ int add_console;
/* find the boot console from /chosen/stdout */
if (!of_chosen)
- return 0;
+ return;
name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
if (name == NULL)
- return 0;
+ return;
stdout_node = of_find_node_by_path(name);
if (!stdout_node)
- return 0;
-
- /* now we have the stdout node; figure out what type of device it is. */
+ return;
name = (char *)get_property(stdout_node, "name", NULL);
if (!name) {
printk(KERN_WARNING "stdout node missing 'name' property!\n");
goto out;
}
+ /* The user has requested a console so this is already set up. */
+ add_console = !strstr(cmd_line, "console=");
- if (strncmp(name, "vty", 3) == 0) {
- if (device_is_compatible(stdout_node, "hvterm1")) {
- termno = (u32 *)get_property(stdout_node, "reg", NULL);
- if (termno) {
- vtermno = termno[0];
- udbg_putc = udbg_putcLP;
- udbg_getc = udbg_getcLP;
- udbg_getc_poll = udbg_getc_pollLP;
- found = 1;
- }
- } else if (device_is_compatible(stdout_node, "hvterm-protocol")) {
- termno = (u32 *)get_property(stdout_node, "reg", NULL);
- if (termno) {
- vtermno = termno[0];
- udbg_putc = udbg_hvsi_putc;
- udbg_getc = udbg_hvsi_getc;
- udbg_getc_poll = udbg_hvsi_getc_poll;
- found = 1;
- }
- }
- } else if (strncmp(name, "serial", 6)) {
- /* XXX fix ISA serial console */
- printk(KERN_WARNING "serial stdout on LPAR ('%s')! "
- "can't print udbg messages\n",
- stdout_node->full_name);
- } else {
- printk(KERN_WARNING "don't know how to print to stdout '%s'\n",
- stdout_node->full_name);
- }
+ /* Check if it's a virtual terminal */
+ if (strncmp(name, "vty", 3) != 0)
+ goto out;
+ termno = (u32 *)get_property(stdout_node, "reg", NULL);
+ if (termno == NULL)
+ goto out;
+ vtermno = termno[0];
+ if (device_is_compatible(stdout_node, "hvterm1")) {
+ udbg_putc = udbg_putcLP;
+ udbg_getc = udbg_getcLP;
+ udbg_getc_poll = udbg_getc_pollLP;
+ if (add_console)
+ add_preferred_console("hvc", termno[0] & 0xff, NULL);
+ } else if (device_is_compatible(stdout_node, "hvterm-protocol")) {
+ vtermno = termno[0];
+ udbg_putc = udbg_hvsi_putc;
+ udbg_getc = udbg_hvsi_getc;
+ udbg_getc_poll = udbg_hvsi_getc_poll;
+ if (add_console)
+ add_preferred_console("hvsi", termno[0] & 0xff, NULL);
+ }
out:
of_node_put(stdout_node);
- return found;
}
void vpa_init(int cpu)
Index: linux-serialfix/arch/powerpc/platforms/pseries/setup.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/platforms/pseries/setup.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/platforms/pseries/setup.c 2005-11-23 17:30:14.000000000 +1100
@@ -78,8 +78,6 @@
extern void find_udbg_vterm(void);
extern void system_reset_fwnmi(void); /* from head.S */
extern void machine_check_fwnmi(void); /* from head.S */
-extern void generic_find_legacy_serial_ports(u64 *physport,
- unsigned int *default_speed);
int fwnmi_active; /* TRUE if an FWNMI handler is present */
@@ -365,10 +363,7 @@ static int pseries_set_xdabr(unsigned lo
*/
static void __init pSeries_init_early(void)
{
- void *comport;
int iommu_off = 0;
- unsigned int default_speed;
- u64 physport;
DBG(" -> pSeries_init_early()\n");
@@ -382,17 +377,8 @@ static void __init pSeries_init_early(vo
get_property(of_chosen, "linux,iommu-off", NULL));
}
- generic_find_legacy_serial_ports(&physport, &default_speed);
-
if (platform_is_lpar())
find_udbg_vterm();
- else if (physport) {
- /* Map the uart for udbg. */
- comport = (void *)ioremap(physport, 16);
- udbg_init_uart(comport, default_speed);
-
- DBG("Hello World !\n");
- }
if (firmware_has_feature(FW_FEATURE_DABR))
ppc_md.set_dabr = pseries_set_dabr;
Index: linux-serialfix/include/asm-powerpc/serial.h
===================================================================
--- linux-serialfix.orig/include/asm-powerpc/serial.h 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/include/asm-powerpc/serial.h 2005-11-23 17:30:14.000000000 +1100
@@ -15,4 +15,6 @@
/* Default baud base if not found in device-tree */
#define BASE_BAUD ( 1843200 / 16 )
+extern void find_legacy_serial_ports(void);
+
#endif /* _PPC64_SERIAL_H */
Index: linux-serialfix/include/asm-powerpc/udbg.h
===================================================================
--- linux-serialfix.orig/include/asm-powerpc/udbg.h 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/include/asm-powerpc/udbg.h 2005-11-23 17:40:02.000000000 +1100
@@ -24,7 +24,10 @@ extern int udbg_read(char *buf, int bufl
extern void register_early_udbg_console(void);
extern void udbg_printf(const char *fmt, ...);
-extern void udbg_init_uart(void __iomem *comport, unsigned int speed);
+extern void udbg_init_uart(void __iomem *comport, unsigned int speed,
+ unsigned int clock);
+extern unsigned int udbg_probe_uart_speed(void __iomem *comport,
+ unsigned int clock);
struct device_node;
extern void udbg_init_scc(struct device_node *np);
Index: linux-serialfix/arch/powerpc/kernel/setup_32.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/setup_32.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/setup_32.c 2005-11-23 17:40:02.000000000 +1100
@@ -39,6 +39,7 @@
#include <asm/nvram.h>
#include <asm/xmon.h>
#include <asm/time.h>
+#include <asm/serial.h>
#include "setup.h"
@@ -282,6 +283,13 @@ void __init setup_arch(char **cmdline_p)
unflatten_device_tree();
check_for_initrd();
+
+ if (ppc_md.init_early)
+ ppc_md.init_early();
+
+#ifdef CONFIG_PPC_MULTIPLATFORM
+ find_legacy_serial_ports();
+#endif
finish_device_tree();
smp_setup_cpu_maps();
Index: linux-serialfix/arch/powerpc/kernel/pci_64.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/pci_64.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/pci_64.c 2005-11-23 17:30:14.000000000 +1100
@@ -1223,6 +1223,7 @@ void __devinit pcibios_fixup_device_reso
}
EXPORT_SYMBOL(pcibios_fixup_device_resources);
+
static void __devinit do_bus_setup(struct pci_bus *bus)
{
struct pci_dev *dev;
@@ -1306,6 +1307,20 @@ void pci_resource_to_user(const struct p
*end = rsrc->end + offset;
}
+struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
+{
+ if (!have_of)
+ return NULL;
+ while(node) {
+ struct pci_controller *hose, *tmp;
+ list_for_each_entry_safe(hose, tmp, &hose_list, list_node)
+ if (hose->arch_data == node)
+ return hose;
+ node = node->parent;
+ }
+ return NULL;
+}
+
#endif /* CONFIG_PPC_MULTIPLATFORM */
Index: linux-serialfix/arch/ppc/kernel/pci.c
===================================================================
--- linux-serialfix.orig/arch/ppc/kernel/pci.c 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/arch/ppc/kernel/pci.c 2005-11-23 17:30:14.000000000 +1100
@@ -815,8 +815,7 @@ EXPORT_SYMBOL(pci_device_to_OF_node);
* to set pci_assign_all_buses to 1 and still use RTAS for PCI
* config cycles.
*/
-struct pci_controller*
-pci_find_hose_for_OF_device(struct device_node* node)
+struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
{
if (!have_of)
return NULL;
Index: linux-serialfix/include/asm-powerpc/pci-bridge.h
===================================================================
--- linux-serialfix.orig/include/asm-powerpc/pci-bridge.h 2005-11-23 17:25:11.000000000 +1100
+++ linux-serialfix/include/asm-powerpc/pci-bridge.h 2005-11-23 17:30:14.000000000 +1100
@@ -140,6 +140,9 @@ static inline struct pci_controller *pci
return PCI_DN(busdn)->phb;
}
+extern struct pci_controller*
+pci_find_hose_for_OF_device(struct device_node* node);
+
extern struct pci_controller *
pcibios_alloc_controller(struct device_node *dev);
extern void pcibios_free_controller(struct pci_controller *phb);
Index: linux-serialfix/arch/powerpc/kernel/udbg.c
===================================================================
--- linux-serialfix.orig/arch/powerpc/kernel/udbg.c 2005-11-23 17:40:02.000000000 +1100
+++ linux-serialfix/arch/powerpc/kernel/udbg.c 2005-11-23 17:46:27.000000000 +1100
@@ -99,7 +99,7 @@ static void udbg_console_write(struct co
static struct console udbg_console = {
.name = "udbg",
.write = udbg_console_write,
- .flags = CON_PRINTBUFFER,
+ .flags = CON_PRINTBUFFER | CON_ENABLED,
.index = -1,
};
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