I did a bit more debugging and actually was able to test the board with different graphics card. So, with the nvidia adapter it works just fine, whereas with the aspeed controller in the same PCIe slot it hangs.
I put in attachment to this email two logs, one with nvidia graphics card and another with aspeed controller. However, there's something else I consider worth mensioning. After SeaBIOS outputs 'Running option rom at c000:0003', there also some output appears on the monitor:
AST1300/2300 VGA True Color Graphics and Video Accelerator VBIOS Version 0.96.00 DRAM Size: 64MB
-Viktor
On 19/03/15 21:20, Marc Jones wrote:
Hi Viktor,
On Thu, Mar 19, 2015 at 4:23 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_supportSince it is an add-in card, you don't need to extract the VBIOS and put it into cbfs. The VBIOS on the card will run during the PCI card enumeration. It seems that there is a problem with that specific aspeed card and/or VBIOS. You may want to try a different card to avoid the issue. Please let us know the results if you debug that card further.
Regards, Marc
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