[LinuxBIOS] Epia ML 5000 VGA (Again!) -- Moving backwards, somehow.

[Ronald G Minnich]

Eric Poulsen wrote:
> Daniel,
> 
> mainboard.c already looks like this in src/mainboard/via/epia-m.  It 
> seems to take care of both the $3122 and $3123 devices.
> 
> There are other weird things happening.  LB _does not_ compile the way 
> it used to out-of-the-box, even for older revisions.  It gives me 
> linking errors every time I try to enable VGA 
> (CONFIG_CONSOLE_VGA,CONFIG_PCI_ROM_RUN), unless I increase the 
> ROM_IMAGE_SIZE, as recommended by Stefan.  I figured maybe my payload 
> was too large and pushing the image > $10000, so I recompiled filo with 
> a bunch fewer options, and it was only 26K (vs 39K before), and it still 
> won't link without increasing ROM_IMAGE_SIZE to $12000.  I'm not sure if 
> this is related, but it is weird.  Can ROM_IMAGE_SIZE be changed w/o 
> changing any of the other parameters?
> 
> Also, does anyone have a good explaination of:
> 
> ROM_SIZE (Appears to be total size of your rom chip)
> ROM_IMAGE_SIZE (Size of this rom image, fallback or normal),  defaults 
> to $10000 (64K)
> ROM_SECTION_OFFSET=0x10000 ???
> ROM_SECTION_SIZE=0x30000 ??? ROM section == total used by LB minus VGA 
> rom size???

see my linux journal article on the web. I think that's where it is. 
There is a figure there that might clear it up.

Or I can send you the article directly.

ron