Re: [microblaze-uclinux] can't mount root fs...!?

[Flavius Gruian <Flavius.Gruian@cs.lth.se>]

Hi John,

Thanks - I got it running with the image.bin after I saw that
the dow .elf doesn't do it.
I noticed  that mb-objcopy does not add .romfs as a segment, but I
couldn't find any actual resolve to that... until now.

Anyway. I got a system booting uClinux at power up now. =)

(I use a opb_jtag_uart instead of the P160 serial, since it so
happends I have no more serial ports available =/ but otherwise
the system is a vanilla 2.00f)

PS. Anyone compiling with mb-g++ with sstreams, iostream, and templates,
without problems? (2.95.3-4)

/F

On Fri, 7 Nov 2003, John Williams wrote:

>Hi Flavius,
>
>Flavius Gruian wrote:
>> I'm trying to run uClinux with an image compiled by myself,
>> on the mbvanilla configuration (2.00f). I can get most of
>> the things running, yet when I download and run image.elf this
>> is what I get:
>
>Yes, this is a known (but maybe not yet documented) problem.  The
>solution is to run
>
>mb-objcopy -O binary image.elf image.bin
>
>then in XMD download with
>
>dow -data image.bin 0x8000000
>
>(or whatever start address you linked for).
>
>Objcopy is used to insert the romfs image as a section .romfs into the
>elf file (have a look in vendors/Insight/XC2V1K_Microblaze/Makefile).
>However, objcopy (all versions, not just microblaze) doesn't put the
>section into a segment.  Then, when the XMD elf loader picks up the
>file, it doesn't download any sections not in segments.  It's a known
>problem in uClinux land.  It could be fixed by patching ELF binutils
>(which includes objcopy), but most seem to think it's such a standard
>thing that elf loaders should just support it.
>
>Regards,
>
>John
>
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