Re: Generated xilinx linux 2.6 image sections

On 1/21/08, greenlean [off-list ref] wrote:

Hi all,

I'm trying to boot the 2.6 xilinx kernel downloaded from their git server in
the XUPV2P board I'm really having troubles (I can't see anything in the
minicom console terminal). I'm not seeing anything, neither the ucompressing
kernel string nor the prompt with the memory addresses that kernel prompt at
first time, so I have started to distrust of anything.

When I download the kernel using xmd, I see:

XMD% dow imagen_UART16550_ml300.elf
        section, .text: 0x00400000-0x0040387b
        section, .data: 0x00404000-0x004e6fff
        section, .bss: 0x004e7000-0x004e919f
Downloaded Program imagen_UART16550_ml300.elf
Setting PC with Program Start Address 0x00400000

<snip>

I suppossed this is because the image kernel is compressed, but despite
beeing compressed it should have a boot section or something similar ???
It's right that the kernel start address is set to the 0x00400000??

Or does the section .text  contains all the kernel code to uncompresse the
code of the kernel??

Yes; what you're seeing is the sections for the boot wrapper; not for
the kernel itself.  The bootwrapper carries a compressed kernel image
as it's payload (notice how large the .data section is?).  To see the
sections on the kernel proper, use readelf on the vmlinux file in the
kernel tree.

Cheers,
g.

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.