[U-Boot-Users] CONFIG_MMC: mapping the device to physical memory for sharp ZAURUS

[U-Boot-Users] CONFIG_MMC: mapping the device to physical memory for sharp ZAURUS

[my lists]

CFG_MMC_BASE: is this the base address where MMC is mapped ? 

include/configs/pxa255_idp.h:#define CFG_MMC_BASE               0xF0000000
is this usable gererically for pxa255 or only for that specific board ?
if not how can I find out where it is mapped (if there is no tech documentation
avalible for sharp Zaurus) ?

Regards
David

 


 
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From "abiyani at unix dot telasic dot com" at unix.telasic.com  Wed Jun 20 22:55:08 2007
From: "abiyani at unix dot telasic dot com" at unix.telasic.com (Arun Biyani)
Date: Wed, 20 Jun 2007 13:55:08 -0700
Subject: [U-Boot-Users] Build u-boot on Cygwin failed - fixed
In-Reply-To: <200706141818.LAA15126@unix.telasic.com>
References: <20070613230937.22983352681@atlas.denx.de>
	<200706141818.LAA15126@unix.telasic.com>
Message-ID: <200706202055.NAA21665@unix.telasic.com>

Arun Biyani wrote:
> I tried to build u-boot under Cygwin. It failed with error message 
> below.  Although not critical since
> I can always build it on Linux, I'd still like to find out  how to fix 
> error below . Looks like the compiles
> were all successful. Only the last link step failed. Perhaps, I need 
> newer cross compile toolchain.
> Does anyone know where I can download a pre-built cross compile 
> toolchain for 68k running
> under Cygwin?
>
>       cd /c/home/wrk/u-boot-1.2.0 && m68k-elf-ld -Bstatic -T 
> /c/home/wrk/u-boot-1.2.0/board/m5272c3/u-boot.lds -Ttext 0xffe00000  
> -n $UNDEF_SYM cpu/mcf52x2/start.o \
>                --start-group lib_generic/libgeneric.a 
> board/m5272c3/libm5272c3.a cpu/mcf52x2/libmcf52x2.a lib_m68k/libm68k.a 
> fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a 
> fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a 
> net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a 
> drivers/libdrivers.a drivers/nand/libnand.a 
> drivers/nand_legacy/libnand_legacy.a drivers/sk98lin/libsk98lin.a 
> post/libpost.a post/cpu/libcpu.a common/libcommon.a --end-group -L 
> /bin/../lib/gcc-lib/m68k-elf/3.4.0/m5307 -lgcc \
>                -Map u-boot.map -o u-boot
> m68k-elf-ld: internal error /usr/src/xtools-3.4w/ld/ldlang.c 1974
> make: *** [u-boot] Error 1
> [u-boot-1.2.0$:523]
>
I updated my cross compile tools (in Cygwin) to gcc 4.1.1. Now u-boot 
builds successfully under Cygwin.

[U-Boot-Users] CONFIG_MMC: mapping the device to physical memoryfor sharp ZAURUS

[Joey Oravec]

"my lists" <lists_my@yahoo.com> wrote in message 
news:187928.85495.qm at web57312.mail.re1.yahoo.com...
> CFG_MMC_BASE: is this the base address where MMC is mapped ?
>
> include/configs/pxa255_idp.h:#define CFG_MMC_BASE               0xF0000000
> is this usable gererically for pxa255 or only for that specific board ?
> if not how can I find out where it is mapped (if there is no tech 
> documentation
> avalible for sharp Zaurus) ?

Take a look at cpu/pxa/mmc.c. This adds a few functions like 
mmc_block_read(), mmc_block_write(), and mmc_init() which interact with the 
media card. Typically init will register the card as a FAT filesystem, and 
you'll let those functions interact with the card.

In my version of the code, CFG_MMC_BASE mainly affects the "cp" command in 
common/cmd_mem.c. Some functions like that will let you interact with the 
card as a raw device, as if it were mapped into unused memory. They'll call 
mmc2info() to decide if the address is within that assigned range. I don't 
find this feature very useful and always interact with the card as a 
filesystem.

-joey 

[U-Boot-Users] CONFIG_MMC: mapping the device to physical memoryfor sharp ZAURUS

[my lists]

Thanks ... I'll ne having a look at that tonignt.
So if I keep using access to MMC only via fs all I need is
define CONFIG_MMC 1
in my include/configs/corgi.h ?

What would I then need to use in the 
CONFIG_BOOTCOMMAND
to boot from a kernel in MMC filesystem ?
Currently I'm loading kernel from flash with specific nand logical reads
(common/cmd_nand.c has been patched with extra code for the nand read.logical
functionality)
nand read.logical 0xa0800000 0x005a0000 0x00160000

and then booting from memory 
bootm             



I was also wondering if I can get ext2 filesystem support for MMC ... I like to
format my mmc for Zaurus as ext2/3 when I keep system stuff on there.
My goal would be to have kernel loaded from an ext2/3 formatted MMC .... so
that I could have a totally different system booting from MMC ... and keep a
working and stable complete system (including different kernel) on the onboard
flash totally untouched.


Regards
David

--- Joey Oravec <joravec@drewtech.com> wrote:

> "my lists" <lists_my@yahoo.com> wrote in message 
> news:187928.85495.qm at web57312.mail.re1.yahoo.com...
> > CFG_MMC_BASE: is this the base address where MMC is mapped ?
> >
> > include/configs/pxa255_idp.h:#define CFG_MMC_BASE               0xF0000000
> > is this usable gererically for pxa255 or only for that specific board ?
> > if not how can I find out where it is mapped (if there is no tech 
> > documentation
> > avalible for sharp Zaurus) ?
> 
> Take a look at cpu/pxa/mmc.c. This adds a few functions like 
> mmc_block_read(), mmc_block_write(), and mmc_init() which interact with the 
> media card. Typically init will register the card as a FAT filesystem, and 
> you'll let those functions interact with the card.
> 
> In my version of the code, CFG_MMC_BASE mainly affects the "cp" command in 
> common/cmd_mem.c. Some functions like that will let you interact with the 
> card as a raw device, as if it were mapped into unused memory. They'll call 
> mmc2info() to decide if the address is within that assigned range. I don't 
> find this feature very useful and always interact with the card as a 
> filesystem.
> 
> -joey 
> 
> 
> 
> 
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> 



       
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[U-Boot-Users] CONFIG_MMC: mapping the device to physicalmemoryfor sharp ZAURUS

[Joey Oravec]

"my lists" <lists_my@yahoo.com> wrote in message 
news:56457.87841.qm at web57305.mail.re1.yahoo.com...
> What would I then need to use in the
> CONFIG_BOOTCOMMAND
> to boot from a kernel in MMC filesystem ?

I'm calling bootmmc, and my definitions look like:

bootmmc = run initcard getmmckernel runsdram;
initcard = mmcinit;
getmmckernel = fatload mmc 6 $(kernel_in_ram) uImage;
runsdram = bootm $(kernel_in_ram);

Notice that I'm use the run command so it won't try to run a subsequent 
command if initcard fails.

> I was also wondering if I can get ext2 filesystem support for MMC ...

There's a common/cmd_ext2.c so there must be some support. I have no idea 
because I have never used it, so you're on your own there.

-joey 

[U-Boot-Users] pxa255: ZAURUS boards

[my lists]

I've applied (with some difficulty) the patches I used to use with version
2006-04-18-1106 in order to get sharp zaurus corgi board working, on current
....

I've got it building but when I try to boot I see nothing on the serial
console. Normally (with version 2006-04-18-1106) I'd see the u-boot stuff, a
timeout and the normal linux kernel stuff.

I was hoping I could get something to help me debug what was wrong .... but
I've nothing to show :-(

What do I do now if I'm clueless ?




       
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