[LinuxBIOS] VGA support

I just got a VGA addon card to work on the nVidia nf4crb board.

Maybe my comments would be helpful to others.

1)       Turning on the VGA options in Options.lb (CONFIG_CONSOLE_VGA
and CONFIG_PCI_ROM_RUN) added more "stuff" than I could fit on a 512K
Flash device.  I had to use a pin compatible 1M Flash device.  Are there
other options if a larger Flash device is not available?  For example,
what are the Options.lb changes to run without a FALLBACK  or without
CMOS Options.  Are there ways to tell how much free Flash space you
have?

2)       I'd suggest the VGA Support page have a reference to the
FreeVGA article.

3)       The VGA support page should have a suggestion to check to see
that PCI bridges are set to enable forwarding of VGA memory mapped I/O.

4)       I needed to change src/devices/pci_rom.c in pci_rom_load() at
about line 88 to force the VGA ROM to be copied to
PCI_VGA_RAM_IMAGE_START (0xC0000).  The rom_data->class_hi test failed
when it shouldn't have?

The VGA support is very cool.  Thanks to all who made it work.

Steve

[Li-Ta Lo]

On Fri, 2005-08-26 at 17:22 -0400, [e-mail] wrote:
>   I’d suggest the VGA Support page have a reference to the
>
> FreeVGA article.

I will try to do that. The VGA support page on the wiki was half done.
I was interrupted when I modifying the page and never have time to
finish it.
>   The VGA support page should have a suggestion to check to see
>
> that PCI bridges are set to enable forwarding of VGA memory mapped
> I/O.

Isn't it been build into the device enumeration code? Isn't the code
in allocate_vga_resource sufficient?
>   I needed to change src/devices/pci_rom.c in pci_rom_load() at
>
> about line 88 to force the VGA ROM to be copied to
> PCI_VGA_RAM_IMAGE_START (0xC0000).  The rom_data->class_hi test failed
> when it shouldn’t have?

What VGA are you using? Is it reporting wrong class code?

Is it the case that 4) failed so 3)failed too?
> The VGA support is very cool.  Thanks to all who made it work.

Do you have any patch that have to be commit to the tree?