[coreboot] SimNOW VGA int 1a
mylesgw at gmail.com
Thu Oct 16 21:35:57 CEST 2008
On Thu, Oct 16, 2008 at 1:32 PM, ron minnich <rminnich at gmail.com> wrote:
> On Thu, Oct 16, 2008 at 12:30 PM, Myles Watson <mylesgw at gmail.com> wrote:
> > Wait a second. The reason this is broken is that the code setting the
> > decode register is in the ROM. Can we fix this by calling
> > pci_conf1_write_config32 instead? It looks like it's in RAM.
> sure, but ANY call to ROM will fail. There is a huge hole:
> vga bios calls pcibios to set BAR 10 to ffffffff
> There is a huge window here: any call to ROM code will fail, so that
> includes printk (we do this on each pcibios call), and just about
> anything else.
> So we have a problem with a fundamental design decision
All right. I guess I go back to being a lurker for a while until it gets
worked out :)
I guess the beauty of this is that it will enforce clean separation between
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