I need still help with XIP, kernel boots now :)

I need still help with XIP, kernel boots now :)

[Konstantin Kletschke]

Hi people!

Now I need definately have XIP to get running :/

I use 2.6.11-rc2-mm2 and put the "xipu" patches into it, which make the
"make xipuImage" available and the XIP Kernel boots now. heureka.

Due to the fakt I have no hardware partiotionable Flash devices I need
to utlize the mtd software support to cexist with an XIP Kernel
(CONFIG_MTD_XIP=y). I changed the xip.h to

#if defined(CONFIG_ARCH_SA1100) || defined(CONFIG_ARCH_PXA) || defined(CONFIG_ARCH_IMX)

#include <asm/hardware.h>
#ifdef CONFIG_ARCH_PXA
#include <asm/arch/pxa-regs.h>
#endif

#ifdef CONFIG_ARCH_IMX
#include <asm/arch/imx-regs.h>
#endif /* CONFIG_ARCH_IMX */

#endif /* CONFIG_ARCH_ */

#if defined(CONFIG_ARCH_PXA)

#define xip_irqpending()        (ICIP & ICMR)

/* we sample OSCR and convert desired delta to usec (1/4 ~= 1000000/3686400) */
#define xip_currtime()          (OSCR)
#define xip_elapsed_since(x)    (signed)((OSCR - (x)) / 4)

#elif defined (CONFIG_ARCH_IMX)

#define xip_irqpending()        (( IMX_INTENABLEH  & IMX_NIPNDH ) || ( IMX_INTENABLEL & IMX_NIPNDL ))

/* we hopefully too :p */
#define xip_currtime()          (IMX_TCN(1))
#define xip_elapsed_since(x)    (signed)((IMX_TCN(1) - (x)) / 4)

#elif

So, when I read datasheet correct, pxa's ICIP corresponds to i.MX's NIPNDx 
and pxa's ICMR to i.MX's INTENABLEx.

When I boot the xipuImage with / mounted ro it boots most often to the
loginprompt, I can login and do stuff. But when / is mounted rw the
system brakes. this happens after 

Probing scb9328_flash at physical address 0x10000000 (16-bit buswidth)
scb9328_flash: Found 1 x16 devices at 0x0 in 16-bit bank              
Intel/Sharp Extended Query Table at 0x0031             
cfi_cmdset_0001: write suspend disabled    
Using buffer write method              
cfi_cmdset_0001: Erase suspend on write enabled
5 cmdlinepart partitions found on MTD device scb9328_flash
Creating 5 MTD partitions on "scb9328_flash":             
0x00000000-0x00020000 : "U-boot"             
0x00020000-0x00040000 : "U-boot_env"
0x00040000-0x00140000 : "kernel"    
0x00140000-0x00540000 : "root"  
0x00540000-0x00940000 : "fs"
NET: Registered protocol family 2
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP established hash table entries: 1024 (order: 1, 8192 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)       
TCP: Hash tables configured (established 1024 bind 1024)

Its also possible to mount / ro and mount rw a fourth partition after
logging in, kernel freezes then.

So I have an error in my setup. Is xip.h the only place, which should be
adapted from pxa/sa1100 to i.MX?

When compiling the cmopiler warns:

  CC      drivers/mtd/chips/cfi_probe.o
/tmp/ccnLmXio.s: Assembler messages:
/tmp/ccnLmXio.s:3: Warning: ignoring changed section attributes for .data
  CC      drivers/mtd/chips/cfi_util.o
/tmp/ccjtGCIO.s: Assembler messages:
/tmp/ccjtGCIO.s:13: Warning: ignoring changed section attributes for .data
  CC      drivers/mtd/chips/cfi_cmdset_0001.o

Is this fatal and needs to be adjusted in platform stuff or arch stuff?

Regards, Konsti


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Re: I need still help with XIP, kernel boots now :)

[Nicolas Pitre]

On Tue, 1 Feb 2005, Konstantin Kletschke wrote:

> Hi people!
> 
> Now I need definately have XIP to get running :/
> 
> I use 2.6.11-rc2-mm2 and put the "xipu" patches into it, which make the
> "make xipuImage" available and the XIP Kernel boots now. heureka.
> 
> Due to the fakt I have no hardware partiotionable Flash devices I need
> to utlize the mtd software support to cexist with an XIP Kernel
> (CONFIG_MTD_XIP=y).

Try that option with a non XIP kernel at first, then test writing to 
flash etc.  See if that works first.


Nicolas

Re: I need still help with XIP, kernel boots now :)

[Konstantin Kletschke]

Am 2005-02-01 11:38 -0500 schrieb Nicolas Pitre:
> On Tue, 1 Feb 2005, Konstantin Kletschke wrote:
> 
> > Hi people!
> > 
> > Now I need definately have XIP to get running :/
> > 
> > I use 2.6.11-rc2-mm2 and put the "xipu" patches into it, which make the
> > "make xipuImage" available and the XIP Kernel boots now. heureka.
> > 
> > Due to the fakt I have no hardware partiotionable Flash devices I need
> > to utlize the mtd software support to cexist with an XIP Kernel
> > (CONFIG_MTD_XIP=y).
> 
> Try that option with a non XIP kernel at first, then test writing to 
> flash etc.  See if that works first.

*ourks* This guves a nice Oops.

Internal error: Oops: 0 [#1] 
CPU: 0            
pc : [<c001fdd8>]    lr : [<e5933000>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
sp : c01af98c  ip : c01afa00  fp : c01af99c          
r10: c01f69f8  r9 : 00000023  r8 : e0000011
r7 : c0160038  r6 : c01afa00  r5 : e5933000  r4 : 00000003
r3 : 00000000  r2 : e0000011  r1 : 00100000  r0 : e0000011
Flags: nzcv  IRQs off  FIQs on  Mode SVC_32  Segment kernel
Control: C000717F  Table: 08004000  DAC: 00000017          
Stack: (0xc01af98c to 0xc01b0000)                 
f980:                            00000000 c01af9d8 c01af9a0 c0020400 c001fd94 
f9a0: c01af9ac c01af9a4 c01af9a4 c0171384 00000023 c01afa34 c01573f0 e0000011 
f9c0: c01afa00 60000093 c01f69f8 c01af9fc c01af9dc c001f120 c0020288 ffffffff 
f9e0: c01afa34 00000002 c01633c8 00275680 c01afb24 c01afa00 c001827c c001f0f4 
fa00: 00000001 00000002 00000080 e0000011 00000002 00000001 00000002 c01633c8 
fa20: 00275680 c01f69c0 c01f69f8 c01afb24 00000000 c01afa48 c015ffd0 c016003c 
fa40: 60000093 ffffffff c01d01c9 00000009 c00db9d0 00000006 00000021 00000080 
fa60: c01c1b00 00000200 c01f69f8 c000a7d0 c00b1ff0 0000001f 0000007f 00000007 
fa80: 00000000 c01afad0 c01679d8 c01679cc c01afab0 c01afaa0 c000a3e4 c0051e84 
faa0: 00000000 c01aff64 c01afab4 c000abd0 c000a3d4 c01366d4 c01b3804 c01afac0 
fac0: 00000005 c01afb00 00000001 00000080 00000080 00000000 c01a9d60 c0029f90 
fae0: 00000000 00000000 00000000 c01a9d60 c0029f90 00000000 00000000 00000002 
fb00: 00000001 c01633c8 00000002 0000000c c01f69f8 00275680 c01afc50 c01afb28 
fb20: c0161bf8 c015ff88 c01afb34 00003d39 c004d244 00000080 00000006 00000000 
fb40: 00000000 00000080 c01f69c0 c01afcf4 002756a0 00000001 00000000 000000d0 
fb60: c01a9d60 c01afb84 c01a9d60 c01afbac c00db9d0 c0029df4 c0028c44 00000080 
fb80: c01f69c0 000000d0 000000d0 00000000 0000003b 00003d39 00000005 00000005 
fba0: c01afbc4 c01afbb0 c01afba8 c01afba8 c0171384 00000000 00000080 00000080 
fbc0: 00000080 00000080 00000080 000000e8 000000e8 c01633c8 c01f69f8 c01f69c0 
fbe0: 002756a0 00000030 00000080 00000030 00000070 00000070 00000080 c01afc44 
fc00: c01afc0c c00dc4c4 c002a034 c01a9d60 c0029f90 00000000 00000000 002756a0 
fc20: c01f69f8 00000000 0000000c c01f69f8 00000000 002756a0 00000000 c01f69c0 
fc40: 0000000c c01afc90 c01afc54 c00dceb0 c0160f5c 0000000c c01f69c0 00000040 
fc60: c01633c8 c0253000 00000000 000356a0 00000000 0000000c c01afce0 c01afce8 
fc80: c01afce8 c01afcc8 c01afc94 c00d7d48 c00dcd78 c01afce0 c01afce8 c01afcd4 
fca0: c01afcac 000356a0 00000000 c01afce0 c0264030 c0269a00 c0276694 c01afd1c 
fcc0: c01afccc c009c044 c00d7c9c c01afce0 c01afce8 c00dc780 00400000 c0269a00 
fce0: 00000000 c01ac002 c0021985 000000f5 3d39d2e2 c027561c c027561c c01afd44 
fd00: c0269a00 c01afd48 c0269ac4 c0269aac c01afd40 c01afd20 c00a2a5c c009bad4 
fd20: c01afd48 c027561c c0269a00 00000000 c01afd48 c01afd6c c01afd44 c00a27e8 
fd40: c00a2a3c 00000000 00000025 c0269a94 c0269a9c c0269aa4 c0269ab4 c0269abc 
fd60: c01afdb4 c01afd70 c00a2df4 c00a2618 c0269af8 c0269a00 c0269adc c0269ad4 
fd80: c0269acc c0269aec c00b1ff0 c025a800 c0269a00 00000000 c0269800 c025a800 
fda0: 00000000 00000000 c01afdd8 c01afdb8 c00a4b90 c00a2ba8 c0269800 c0269a00 
fdc0: 00008000 00000000 c025a800 c01afdfc c01afddc c00a51e4 c00a4a64 ffffffea 
fde0: 00000003 c0270000 00008000 c015beb8 c01afe6c c01afe00 c00a5430 c00a515c 
fe00: c025a800 c007a15c c025b5dc c01a7600 c01afecc c01afecc c01afe64 00000001 
fe20: 00000001 00000000 0000000a c01a72a0 c0261680 c0270000 00008000 00000000 
fe40: c01afe6c c01afe50 c01a72a0 fffffff4 c015beb8 c0270000 00008000 00000000 
fe60: c01afe94 c01afe70 c0068ed4 c00a52ac ffffffff c0270000 00000000 00008000 
fe80: c01afecc 00000000 c01afebc c01afe98 c007e600 c0068e88 00008000 00000000 
fea0: c026f000 00000000 c0270000 c01afecc c01aff34 c01afec0 c007eca0 c007e58c 
fec0: c0270000 00000000 c026e000 c01b2554 c01a7600 c01afee0 00000000 c0138cb8 
fee0: 00000001 00000001 00000000 00000000 00000000 c01aff10 c01aff04 c004dff8 
ff00: 00001000 c01aff34 c01aff14 00000000 00000000 c0138cb8 c026f000 00008000 
ff20: 00000000 00000000 c01aff68 c01aff38 c007f0c0 c007eb60 00000000 00000000 
ff40: c0270000 c026e000 c01ca000 c01ca000 00008000 c0138cb8 c01732b0 c01aff80 
ff60: c01aff6c c0008f68 c007f02c 00000000 c01ca000 c01affc4 c01aff84 c000904c 
ff80: c0008f48 c003d8c4 01f00003 c0138cb8 00000000 00000000 00000000 00000000 
ffa0: c01affc4 c0016a18 c00169c8 00000000 00000000 00000000 c01affe0 c01affc8 
ffc0: c0009210 c0009004 00000000 c0138b70 00000000 c01afff4 c01affe4 c00180c4 
ffe0: c0009194 00000000 00000000 c01afff8 c002f820 c0018084 e1530001 9a000007 
Backtrace:                                                                   
Function entered at [<c001fd84>] from [<c0020400>]
 r4 = 00000000                                    
Function entered at [<c0020278>] from [<c001f120>]
Function entered at [<c001f0e4>] from [<c001827c>]
 r8 = 00275680  r7 = C01633C8  r6 = 00000002  r5 = C01AFA34
 r4 = FFFFFFFF                                             
Function entered at [<c015ff78>] from [<c0161bf8>]
Function entered at [<c0160f4c>] from [<c00dceb0>]
Function entered at [<c00dcd68>] from [<c00d7d48>]
Function entered at [<c00d7c8c>] from [<c009c044>]
Function entered at [<c009bac4>] from [<c00a2a5c>]
Function entered at [<c00a2a2c>] from [<c00a27e8>]
 r8 = C01AFD48  r7 = 00000000  r6 = C0269A00  r5 = C027561C
 r4 = C01AFD48                                             
Function entered at [<c00a2608>] from [<c00a2df4>]
 r8 = C0269ABC  r7 = C0269AB4  r6 = C0269AA4  r5 = C0269A9C
 r4 = C0269A94                                             
Function entered at [<c00a2b98>] from [<c00a4b90>]
Function entered at [<c00a4a54>] from [<c00a51e4>]
 r8 = C025A800  r7 = 00000000  r6 = 00008000  r5 = C0269A00
 r4 = C0269800                                             
Function entered at [<c00a514c>] from [<c00a5430>]
 r8 = C015BEB8  r7 = 00008000  r6 = C0270000  r5 = 00000003
 r4 = FFFFFFEA                                             
Function entered at [<c00a529c>] from [<c0068ed4>]
Function entered at [<c0068e78>] from [<c007e600>]
Function entered at [<c007e57c>] from [<c007eca0>]
Function entered at [<c007eb50>] from [<c007f0c0>]
Function entered at [<c007f01c>] from [<c0008f68>]
 r8 = C01732B0  r7 = C0138CB8  r6 = 00008000  r5 = C01CA000
 r4 = C01CA000                                             
Function entered at [<c0008f38>] from [<c000904c>]
 r4 = C01CA000                                    
Function entered at [<c0008ff4>] from [<c0009210>]
 r8 = 00000000  r7 = 00000000  r6 = 00000000  r5 = C00169C8
 r4 = C0016A18                                             
Function entered at [<c0009184>] from [<c00180c4>]
 r5 = 00000000  r4 = C0138B70                     
Function entered at [<c0018074>] from [<c002f820>]
 r4 = 00000000                                    
Code: e21e1601 0a000008 e1a02000 e3a03000 (e4d21001)


>>EIP; c001fdd8 <do_alignment_ldrstr+54/108>   <=====

>>r7; c0160038 <xip_udelay+c0/950>

Trace; c001fd84 <do_alignment_ldrstr+0/108>
Trace; c0020400 <do_alignment+188/2c8>
Trace; c0020278 <do_alignment+0/2c8>
Trace; c001f120 <do_DataAbort+3c/a0>
Trace; c001f0e4 <do_DataAbort+0/a0>
Trace; c001827c <__dabt_svc+3c/60>

>>r7; c01633c8 <scb9328_map+0/30>

Trace; c015ff78 <xip_udelay+0/950>
Trace; c0161bf8 <do_write_buffer+cac/10f8>
Trace; c0160f4c <do_write_buffer+0/10f8>
Trace; c00dceb0 <cfi_intelext_write_buffers+148/1a4>
Trace; c00dcd68 <cfi_intelext_write_buffers+0/1a4>
Trace; c00d7d48 <part_write+bc/f8>
Trace; c00d7c8c <part_write+0/f8>
Trace; c009c044 <jffs2_mark_node_obsolete+580/76c>
Trace; c009bac4 <jffs2_mark_node_obsolete+0/76c>
Trace; c00a2a5c <jffs2_build_remove_unlinked_inode+30/ec>
Trace; c00a2a2c <jffs2_build_remove_unlinked_inode+0/ec>
Trace; c00a27e8 <jffs2_build_filesystem+1e0/424>
Trace; c00a2608 <jffs2_build_filesystem+0/424>
Trace; c00a2df4 <jffs2_do_mount_fs+25c/2bc>
Trace; c00a2b98 <jffs2_do_mount_fs+0/2bc>
Trace; c00a4b90 <jffs2_do_fill_super+13c/25c>
Trace; c00a4a54 <jffs2_do_fill_super+0/25c>
Trace; c00a51e4 <jffs2_get_sb_mtd+98/f8>
Trace; c00a514c <jffs2_get_sb_mtd+0/f8>
Trace; c00a5430 <jffs2_get_sb+194/1d0>

>>r8; c015beb8 <jffs2_fs_type+0/20>

Trace; c00a529c <jffs2_get_sb+0/1d0>
Trace; c0068ed4 <do_kern_mount+5c/f4>
Trace; c0068e78 <do_kern_mount+0/f4>
Trace; c007e600 <do_new_mount+84/b8>
Trace; c007e57c <do_new_mount+0/b8>
Trace; c007eca0 <do_mount+150/16c>
Trace; c007eb50 <do_mount+0/16c>
Trace; c007f0c0 <sys_mount+a4/e8>
Trace; c007f01c <sys_mount+0/e8>
Trace; c0008f68 <do_mount_root+30/bc>

>>r8; c01732b0 <names_cachep+0/4>
>>r7; c0138cb8 <__func__.1+33c/ed04>

Trace; c0008f38 <do_mount_root+0/bc>
Trace; c000904c <mount_block_root+58/124>
Trace; c0008ff4 <mount_block_root+0/124>
Trace; c0009210 <prepare_namespace+8c/d0>

>>r5; c00169c8 <root_device_name+0/4>
>>r4; c0016a18 <root_delay+0/4>

Trace; c0009184 <prepare_namespace+0/d0>
Trace; c00180c4 <init+50/10c>

>>r4; c0138b70 <__func__.1+1f4/ed04>

Trace; c0018074 <init+0/10c>
Trace; c002f820 <do_exit+0/328>

Code;  c001fdc8 <do_alignment_ldrstr+44/108>
00000000 <_EIP>:
Code;  c001fdc8 <do_alignment_ldrstr+44/108>
   0:   01 16                     add    %edx,(%esi)
Code;  c001fdca <do_alignment_ldrstr+46/108>
   2:   1e                        push   %ds
Code;  c001fdcb <do_alignment_ldrstr+47/108>
   3:   e2 08                     loop   d <_EIP+0xd>
Code;  c001fdcd <do_alignment_ldrstr+49/108>
   5:   00 00                     add    %al,(%eax)
Code;  c001fdcf <do_alignment_ldrstr+4b/108>
   7:   0a 00                     or     (%eax),%al
Code;  c001fdd1 <do_alignment_ldrstr+4d/108>
   9:   20 a0 e1 00 30 a0         and    %ah,0xa03000e1(%eax)
Code;  c001fdd7 <do_alignment_ldrstr+53/108>   <=====
   f:   e3 01                     jecxz  12 <_EIP+0x12>   <=====
Code;  c001fdd9 <do_alignment_ldrstr+55/108>
  11:   10 d2                     adc    %dl,%dl
Code;  c001fddb <do_alignment_ldrstr+57/108>
  13:   e4 00                     in     $0x0,%al


If xip_udelay is to blame I suspect my xip.h is broken, 
otherwise I have no clue.

Konsti

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Fingerprint: 13C9 B16B 9844 EC15 CC2E  A080 1E69 3FDA EF62 FCEF

Re: I need still help with XIP, kernel boots now :)

[Nicolas Pitre]

On Tue, 1 Feb 2005, Konstantin Kletschke wrote:

> Am 2005-02-01 11:38 -0500 schrieb Nicolas Pitre:
> > On Tue, 1 Feb 2005, Konstantin Kletschke wrote:
> > 
> > > Hi people!
> > > 
> > > Now I need definately have XIP to get running :/
> > > 
> > > I use 2.6.11-rc2-mm2 and put the "xipu" patches into it, which make the
> > > "make xipuImage" available and the XIP Kernel boots now. heureka.
> > > 
> > > Due to the fakt I have no hardware partiotionable Flash devices I need
> > > to utlize the mtd software support to cexist with an XIP Kernel
> > > (CONFIG_MTD_XIP=y).
> > 
> > Try that option with a non XIP kernel at first, then test writing to 
> > flash etc.  See if that works first.
> 
> *ourks* This guves a nice Oops.
> 
> Internal error: Oops: 0 [#1] 
> CPU: 0            
> pc : [<c001fdd8>]    lr : [<e5933000>]    Not tainted
> Using defaults from ksymoops -t elf32-i386 -a i386
[...]

What kernel version is this?


Nicolas

Re: I need still help with XIP, kernel boots now :)

[Konstantin Kletschke]

Regarding my mail before:

I changed IMX_TCN(1) to IMX_TCN(0) because this is the system timer,
damn! Oops is away then and booting an non xip uImage with
CONFIG_XIP_MTD=y works very well! I could copy a file onto the extra
partition mounted rw. 

Running this xipuImage (/ mounted ro) allowed me to mount 
an extra jffs2 partition and ls on it, but writing on it freezes the
system.

Am 2005-02-01 12:30 -0500 schrieb Nicolas Pitre:

> What kernel version is this?

2.6.11-rc2-mm2 with my board specific i.MX addons.

Konsti

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Fingerprint: 13C9 B16B 9844 EC15 CC2E  A080 1E69 3FDA EF62 FCEF

Re: I need still help with XIP, kernel boots now :)

[Jared Hulbert]

> I changed IMX_TCN(1) to IMX_TCN(0) because this is the system timer,
> damn! Oops is away then and booting an non xip uImage with
> CONFIG_XIP_MTD=y works very well! I could copy a file onto the extra
> partition mounted rw.
> 
> Running this xipuImage (/ mounted ro) allowed me to mount
> an extra jffs2 partition and ls on it, but writing on it freezes the
> system.

JTAG/BDM debug time?  I've had good luck with the Abatron BDI2000. ;)

If you look at cfi_cmdset_0001 you'll find some function use __xipram.
 This is intended to place them in RAM so when the flash goes into
status mode you can run these functions.  Make sure they are actually
in RAM.  Check your System.map.

I need still help with XIP, kernel boots now :)

[Konstantin Kletschke]

Hi!

Ok, seems to be it is debug time :)

I have a BDI2000 here, but I never used it to debug a running kernel, I
should learn that now :/

I am trying to look ATM if the __xipram using functions went into .data
but I doubt that, since the compiler issues a warning at just this
point, so I asked in my initial mail if thats not only a warning for me
:)

In System.map there are 

bf112a8c t xip_disable
c0014e14 d xip_enable
c0014f78 d xip_udelay

I did an arm-linux-objdump -ad and searched for the addresses, but only
I find the xip_disable address:

bf112a8c <xip_disable>:
bf112a8c:	e1a0c00d 	mov	ip, sp

not the address of xip_enable and xip_udelay...

How can that be?

Konsti

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