[coreboot] noob question

WANG FEI wangfei.jimei at gmail.com
Mon Aug 10 18:58:28 CET 2015


can you share the coreboot serial log with community?

I used to have a splash on my system, sometime I have to use a new splash
file if the original one does not show up correctly.

On Mon, Aug 10, 2015 at 1:04 PM, Johan S <johanpsz at yahoo.fr> wrote:

> Hi there,
> i m trying to understand few mechanism in coreboot can someone help ?
> I grabbed the git tree , made crossgcc , made a biosfile tested
> succesfully within qemu.
> In the menuconfig few options are quite confusing especially looking at
> the vgabios .
> I choose the oldest qemu model for emulation , enabled the vgabios , kept
> the vesa framebuffer
> did the edid patch to bypasse vbe mod multiple ...
> but i can't get my splashscreen :-/
>
> johan at debian:~/coreboot$ file build/coreboot.rom ^C
> johan at debian:~/coreboot$ build/cbfstool build/coreboot.rom print
> coreboot.rom: 4096 kB, bootblocksize 928, romsize 4194304, offset 0x3c0000
> alignment: 64 bytes, architecture: x86
>
> Name                           Offset     Type         Size
> bootsplash.jpg                 0x3c0000   bootsplash   50937
> cmos_layout.bin                0x3cc740   cmos_layout  808
> fallback/dsdt.aml              0x3ccac0   raw          4000
> config                         0x3cdac0   raw          3459
> revision                       0x3ce880   raw          569
> (empty)                        0x3ceb00   null         5208
> fallback/romstage              0x3cff80   stage        11468
> fallback/ramstage              0x3d2cc0   stage        46007
> fallback/payload               0x3de0c0   payload      55823
> vgaroms/seavgabios.bin         0x3ebb40   raw          35840
> (empty)                        0x3f4780   null         46232
>
> I read somewhere that in vgabios i should be able to see :
>
> under "VGA ROM ---> VGA Hardware Type" select "coreboot linear framebuffer"
>
>
> Anyway i can get my os to boot , i can pass the F12 boot option , i can
> pass openfirmware but ...
> i can't even understand why with all requirement in the biosfile i could't
> get 1024*768
> jpeg displayed with vesa enabled ...
> I 'm lost
> Thanks
>
>
> --
> Johan S <johanpsz at yahoo.fr>
>
> --
> coreboot mailing list: coreboot at coreboot.org
> http://www.coreboot.org/mailman/listinfo/coreboot
>
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