[U-Boot-Users] uImage starting problem on Virtex-4 (PPC405)

[Grant Likely]

On 8/31/07, Miroslaw Dach <miroslaw.dach at psi.ch> wrote:
> Hi All,
>
>         I have successfully built u-boot 1.2.0 on my Avnet evaluation
> board (ml403 like) which uses virtex-4 xilinx FPGA with built-in ppc405
> processor. The u-boot was configured to deal with UART lite.
>
> I have build also zImage.elf which runs very well on my board.
> I have however difficulties to run kernel image via u-boot.

I just thought of something.  You're using kernel v. 2.6.21-rc6.
However, it wasn't until 2.6.22 that the kernel tree was updated to
use the same board info structure as u-boot.  (specifically commit
9be4dcb606e647854760fafd0bb1cb3e1a804d16)

You probably have a u-boot/kernel board info mismatch.

Cheers,
g.

>
> My board has 32 MB of RAM memory (address range 0x000000 - 0x1ffffff)
>
> The steps which I have done are as following:
>
> 1. I have build u-boot and loaded it via jtag to my board
> XMD% dow u-boot1a.elf
>         section, .text: 0x01a00000-0x01a0d838
>         section, .resetvec: 0x01a122f0-0x01a122f4
>         section, .rodata: 0x01a0d838-0x01a0fc5b
>         section, .reloc: 0x01a0fd00-0x01a102a8
>         section, .data: 0x01a102a8-0x01a10740
>         section, .data.rel: 0x01a10740-0x01a1076c
>         section, .data.rel.local: 0x01a1076c-0x01a10ba4
>         section, .u_boot_cmd: 0x01a10ba4-0x01a10db4
>         section, .bss: 0x01a10e00-0x01a122f0
> Downloaded Program u-boot1a.elf
>
> 2. I have loaded the uImage via jtag to the memory location 0x600000
>
> 3. I have started u-boot:
>
> U-Boot 1.2.0 (Aug 31 2007 - 10:49:57)
> ### No HW ID - assuming ML403
> DRAM:  32 MB
> Using default environment
> In:  serial
> Out:  serial
> Err:  serial
>
> Hit any key to stop autoboot:  0
>
> 4. I have started uImage
>
> => bootm 0x600000
> ## Booting image at 00600000 ...
> Image Name:  Linux-2.6.21-rc6
> Image Type:  PowerPC Linux Kernel Image (gzip compressed)
> Data Size:  981837 Bytes = 958.8 kB
> Load Address: 00a00000
> Entry Point:  00a00000
> Verifying Checksum ... OK
> Uncompressing Kernel Image ... OK
> ## Current stack ends at 0x01FCC668 => set upper limit to 0x00800000
> No initrd
> ## Transferring control to Linux (at address 00a00000) ...
>
> 5. After that the system just hangs
>
> 6. I have tried as well to run zImage.elf from u-boot (zImage.elf runs
> well when started  straight from jtag):
>
> => bootelf 0x600000
> Loading .text @ 0x00400000 (14140 bytes)
> Loading .data @ 0x00404000 (987136 bytes)
> Clearing .bss @ 0x004f5000 (8504 bytes)
> ## Starting application at 0x00400000 ...
> loaded at:  00400000 004F7138
> board data at: 004F5120 004F5138
> relocated to:  004040B4 004040CC
> zimage at:  00404EA9 004F49F5
> avail ram:  004F8000 01FFFFFF
> Linux/PPC load: console=ttyUL0,9600 root=/dev/nfs rw nfsroot=129.117.144.113:/opt/eldk41/ppc_4xx,tcp ip=::::virtex4-mirek:eth0:dhcp panic=1
> Uncompressing Linux...
>
> 7. After that system just hangs
>
> My observation is that:
> - when launching zImage from u-boot, the system blocks during zImage
>   uncompressing
> - when launching uImage from u-boot  the system blocks after u-boot
>   uncompresses the uImage
>
> I do not know what I do wrong. Maybe the processor is not set to the
> correct mode of the apportion or the memory locations are not correct.
>
> I do not also know what should be the proper: Load Address and Entry Point
> for uImage. The zImage refers to the location 0x400000 (as listed above).
>
> I attache to this post my Avnet board u-boot configuration.
>
> Any suggestion is welcome
>
> Best Regards
>
> Mirek
>
>
> --
> =============================================================================
>           Miroslaw Dach (Miroslaw.Dach at psi.ch) - SLS/Controls Group
>                 PSI - Paul Scherrer Institut CH-5232 Villigen
> =============================================================================
>
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-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely at secretlab.ca
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