[coreboot] First coreboot build for Tyan s2895 K8WE mobo with seabios payload, computer starts, but graphical ubuntu 64bits is crashing

Myles Watson mylesgw at gmail.com
Thu Sep 16 23:24:37 CEST 2010

> Now i have a 3 questions for you:
> Is the coreboot.rom 32bits only and is there any advantage to build a
> 64bits version of the coreboot bios, as i intend to run a 64bits OS ?
Coreboot is 32 bit, but it will work fine with a 64-bit OS.

> I build the seabios with Ubuntu gcc 64bits version, it is compatible, can
> i mix it, with the coreboot.rom build with i386-elf coreboot toolchain ?
> The build seabios (bios.bin.elf) is about 1MB in size, how it is possible
> to put it into a smaller 512KB chip inside coreboot.rom ?
Most of it is empty space.  When the ELF gets unpacked, it doesn't take that
much space.
> I didnt put VGA bios so far into the coreboot.rom.
Have you tried using a separate graphics card?  That would narrow down the
problem.  I would try adding the VGA BIOS, though.
> In my opinion, it would be a good idea to mention, somewhere in the build
> howto, that there is a integrated toolchain in coreboot, and may be also
> mention not to forget to delete the .xcompile file after the toolchain was
> built.
I thought if you did a 'make clean' it deleted the .xcompile file.

> What are your advice for the next steps ?
I would add a Video card or put the VGA BIOS into coreboot.rom.  Whichever
one you find easier.


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