[coreboot] VGA doesn't work on Mohon Peak

[Kuzmichev Viktor]

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 at gmail.com <mailto:kuzmichevviktorv at 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 at coreboot.org
>     <mailto:coreboot at coreboot.org>
>     http://www.coreboot.org/mailman/listinfo/coreboot
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.coreboot.org/pipermail/coreboot/attachments/20150320/ab1c912c/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: coreboot_bootsplash_d8.log
Type: text/x-log
Size: 188386 bytes
Desc: not available
URL: <http://www.coreboot.org/pipermail/coreboot/attachments/20150320/ab1c912c/attachment-0001.log>