[LinuxBIOS] Via epia-m2 difficulties
Hi! I'm trying to get a working linuxbios on my Via epia m2 12000, with 1200mhz processor and 512mb ram. The goal is to boot linux from a usbstick (guess i will be using filo and boot the device a uda1) I've managed to extract my videobios image with awardeco and that gave me a videobios file which was exactly 57344byte, how can i apply this to my linuxbios.rom file? The issue is the linuxbios.rom file is allready 256kb, Where would i change the size of this built "rom file" and what should i set it to: I tried setting this: option ROM_SIZE=256*1024 to: option ROM_SIZE=200*1024 Then doing: buildtarget via/epia-m cd via/epia-m/via_epia-m make This gives me this: ... ./buildrom linuxbios.strip linuxbios.rom payload 0x10000 0x12000 payload (41187) + linuxbios (65536) size larger than ROM (73728) size! make[1]: *** [linuxbios.rom] Error 1 ... Any suggestions would be welcome.
On Thu, Nov 09, 2006 at 03:42:20PM +0100, Kurt André Selbach wrote:
Hi!
I'm trying to get a working linuxbios on my Via epia m2 12000, with 1200mhz processor and 512mb ram.
The goal is to boot linux from a usbstick (guess i will be using filo and boot the device a uda1)
Yep. I haven't tried that on my board, but from IDE works just fine.
I've managed to extract my videobios image with awardeco and that gave me a videobios file which was exactly 57344byte, how can i apply this to my linuxbios.rom file?
Hm, this may not be the correct image. I'd suggest dumping the VGA BIOS from when the board is running Linux under the factor BIOS thusly: dd if=/dev/mem of=/tmp/vgabios.bin bs=1k count=64 skip=768 See also http://linuxbios.org/VGA_support
The issue is the linuxbios.rom file is allready 256kb, Where would i change the size of this built "rom file" and what should i set it to:
I tried setting this: option ROM_SIZE=256*1024 to: option ROM_SIZE=200*1024 Then doing:
buildtarget via/epia-m cd via/epia-m/via_epia-m make
This gives me this:
... ./buildrom linuxbios.strip linuxbios.rom payload 0x10000 0x12000 payload (41187) + linuxbios (65536) size larger than ROM (73728) size! make[1]: *** [linuxbios.rom] Error 1 ...
Any suggestions would be welcome.
After the above dd command try these settings in your config: option ROM_SIZE=192*1024 option ROM_SECTION_OFFSET=0x10000 It looks like the latter is 0 now. This is all horribly unintuitive but should improve in v3. If it still doesn't work you could try just inserting your image right at the start of your 256kb linuxbios.rom like this: dd if=vga56k.bin of=linuxbios.rom bs=56k count=1 conv=notrunc But please try the other way first, I think it should work better. //Peter
On Thu, 9 Nov 2006 18:37:08 +0100 Peter Stuge <stuge-linuxbios@cdy.org> wrote:
On Thu, Nov 09, 2006 at 03:42:20PM +0100, Kurt André Selbach wrote:
Hi!
I'm trying to get a working linuxbios on my Via epia m2 12000, with 1200mhz processor and 512mb ram.
The goal is to boot linux from a usbstick (guess i will be using filo and boot the device a uda1)
Yep. I haven't tried that on my board, but from IDE works just fine.
I've managed to extract my videobios image with awardeco and that gave me a videobios file which was exactly 57344byte, how can i apply this to my linuxbios.rom file?
Hm, this may not be the correct image. I'd suggest dumping the VGA BIOS from when the board is running Linux under the factor BIOS thusly:
I'd rather say the output from awardeco is correct. VideoBIOS has to padded later to 64k boundary. Dumping from live system may be incorrect for videorom bigger than 32k. Contact "Carl-Daniel U. Hailfinger" for details. Thanks.
Hi, Anton wrote:
On Thu, 9 Nov 2006 18:37:08 +0100 Peter Stuge <stuge-linuxbios@cdy.org> wrote:
On Thu, Nov 09, 2006 at 03:42:20PM +0100, Kurt André Selbach wrote:
I've managed to extract my videobios image with awardeco and that gave me a videobios file which was exactly 57344byte, how can i apply this to my linuxbios.rom file? Hm, this may not be the correct image. I'd suggest dumping the VGA BIOS from when the board is running Linux under the factor BIOS thusly:
I'd rather say the output from awardeco is correct. VideoBIOS has to padded later to 64k boundary. Dumping from live system may be incorrect for videorom bigger than 32k. Contact "Carl-Daniel U. Hailfinger" for details.
RAM below 1 MB often does not have enough room to store the full BIOS. This means parts of the (Video)BIOS may be truncated. I know of a few laptops where the VideoBIOS size is >32k, but only the first 32k of it are kept in memory after execution. That's (with a proper structure) enough for VideoBIOS tasks after bootup (VESA and stuff) but not enough to actually boot the video card. The only way to get the full VideoBIOS are Anton's BIOS extraction tools. The VideoBIOS file is usually padded to 64k with this command: dd conv=notrunc conv=sync bs=65536 if=extractedvideobios of=vbios.rom Hope this helps. Regards, Carl-Daniel -- http://www.hailfinger.org/
Kurt Andre' Selbach wrote:
The issue is the linuxbios.rom file is allready 256kb, Where would i change the size of this built "rom file" and what should i set it to:
Try this: Snap your video bios image to 64KiB with dd option ROM_SIZE=(256-64)*1024 option FALLBACK_SIZE=128*1024 romimage "fallback" option USE_FALLBACK_IMAGE=1 option ROM_IMAGE_SIZE=33*1024 option LINUXBIOS_EXTRA_VERSION=".0Fallback" payload /tmp/filo.elf end buildrom ./linuxbios.rom ROM_SIZE "fallback" -- Richard A. Smith
participants (5)
-
Anton -
Carl-Daniel Hailfinger -
Kurt André Selbach -
Peter Stuge -
Richard Smith