My setup is this: coreboot loads SeaBIOS as a primary payload which then loads GRUB from hard drive which in its turn boots Linux. What I am trying to achieve is to have Linux output on VGA display.
I've changed debug level to 8 but still have not been able to see anything related to VGA or display or something else close to it in the output. And after enabling boot splash the board just reboots. I tried different framebuffer graphics resolutions with different color modes. I added new log in the attachment.
It's also worth to mention that VGA works fine with vendor's BIOS, so I booted both Linux and Windows with it. Still, can't figure out why VGA controller does not work properly with coreboot.
-Viktor
On 03/19/2015 05:58 PM, WANG FEI wrote:
Viktor, I've messed around VGA function on my platform before, I got the problem to display seabios messages on VGA as well, finally I fed up and enabled the bootsplash in coreboot instead, as along as the coreboot splash can be shown on monitor, which proves the VGA function works, it's what I want, maybe you want more...
Here is my suggestions, 1) Once the VGA option rom integrated in coreboot, making sure it can be invoked during coreboot booting, you possible have to change the debug level to 8 to get more coreboot debug message. I remember it will show a message before/after VGA option rom invoked, searching "VGA" or other keyword in your coreboot log to make sure it does happen. 2) Enable boot splash on coreboot, making sure it can be shown up on your monitor.
I can not help you on seabios VGA function, I never make it work neither.
-Fei
On Thu, Mar 19, 2015 at 10:22 AM, Kuzmichev Viktor <kuzmichevviktorv@gmail.com mailto:kuzmichevviktorv@gmail.com> wrote:
Hello, I'm using coreboot + SeaBIOS on Mohon Peak CRB. And I've tried to make VGA work for a while now. I used this article as a guide: http://www.coreboot.org/VGA_support Extracting VGA BIOS from vendor BIOS image did not work: $ ./bios_extract EDVLCRB1.86B.0043.R00.1408290947_MPK.bin Using file "EDVLCRB1.86B.0043.R00.1408290947_MPK.bin" (8192kB) Error: Unable to detect BIOS Image type. Then, I've downloaded VGA BIOS from here: http://www.aspeedtech.com/support.php Mohon Peak uses Aspeed VGA controller AST1300. And also, I've extracted Video ROM from /dev/mem: # dd if=/dev/mem of=vgabios.bin bs=1k count=32 skip=768 Neither of them worked. Here's what I've tried. I've tried to add them via coreboot's menuconfig (' Add VGA BIOS image' option). I've tried to add them manually via cbfstool as an optionrom and as a raw file. I've tried to put them in CBFS under vgaroms/ directory. Here's my latest ROM-file layout: $ ./build/cbfstool build/coreboot.rom print coreboot.rom: 8192 kB, bootblocksize 1024, romsize 8388608, offset 0x600000 alignment: 64 bytes, architecture: x86 Name Offset Type Size cmos_layout.bin 0x600000 cmos_layout 1352 pci1a03,2000.rom 0x600580 optionrom 32768 fallback/romstage 0x6085c0 stage 26616 fallback/ramstage 0x60ee00 stage 59904 fallback/payload 0x61d840 payload 56100 config 0x62b3c0 raw 4532 revision 0x62c5c0 raw 708 pci8086,1f41.rom 0x62c8c0 raw 61952 vgaroms/pci1a03,2000.rom 0x63bb00 raw 32768 img/Memtest86+(5.01) 0x643b40 payload 159492 (empty) 0x66aa80 null 939288 mrc.cache 0x74ffc0 (unknown) 65536 cpu_microcode_blob.bin 0x760000 microcode 83968 (empty) 0x774840 null 46936 fsp.bin 0x77ffc0 (unknown) 372736 (empty) 0x7db000 null 150424 The entries pci1a03,2000.rom are the VGA ROMs there. I also tried to remove either of them. I've tested with coreboot option 'Run VGA Option ROMs' checked and unchecked without any difference. In SeaBIOS I set 'VGA Hardware Type (coreboot linear framebuffer)' as the other options are None, GeodeGX2 and GeodeLX, so coreboot linear framebuffer seemed more logical. I saw this mailing list: http://www.seabios.org/pipermail/seabios/2015-January/008588.html but found no solution there and it seems not to be my case as my board does not hang. I put coreboot and SeaBIOS output in the attachment. Debug levels set to 7 for both. In coreboot only 'Output verbose CBFS debug messages' checked in 'Debugging' submenu. Is there anything I'm doing wrong or simply missing? Viktor -- coreboot mailing list: coreboot@coreboot.org <mailto:coreboot@coreboot.org> http://www.coreboot.org/mailman/listinfo/coreboot
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Kuzmichev Viktor