[coreboot] Resource Allocation discussion

Myles Watson mylesgw at gmail.com
Tue Dec 2 20:33:50 CET 2008

On Tue, Dec 2, 2008 at 12:09 PM, Myles Watson <mylesgw at gmail.com> wrote:

> On Tue, Dec 2, 2008 at 11:59 AM, Marc Jones <marcj303 at gmail.com> wrote:
>> On Tue, Dec 2, 2008 at 11:06 AM, Myles Watson <mylesgw at gmail.com> wrote:
>> > Here's the read_resources code from qemu after my latest patch.  Is this
>> > what people are thinking?  Notice that I explicitly allocate VGA space
>> and
>> > APIC.  At the end of the code I'm pasting in a snippet of the log that
>> shows
>> > the resources after they are assigned values.
>> I think I like this. It makes sense to me. The legacy VGA space nadd
>> the legacy IO space should be reserved in the southbridge as you have
>> done.
> I actually think I just bumped up the base in the northbridge this time
> around.

All right.  If I do this then I can't ignore fixed resources in the
allocation algorithm anymore.  It still works right now because 0-0xfff is
the largest resource, so it gets allocated first.  I think it would break if
you tried to allocate an IO resource larger than that.

Do we want to take fixed resources into account in the allocator?

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