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@debian:~/coreboot$ file build/coreboot.rom ^C johan@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
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@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@debian:~/coreboot$ file build/coreboot.rom ^C johan@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@yahoo.fr
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Johan S -
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