[coreboot] HELP: Porting i830 RAM init to 440BX, now it won't compile

Joseph Smith joe at settoplinux.org
Tue Mar 2 18:53:53 CET 2010

On Tue, 2 Mar 2010 11:43:42 -0500, Keith Hui <buurin at gmail.com> wrote:
> On Tue, Mar 2, 2010 at 11:22 AM, ron minnich <rminnich at gmail.com> wrote:
>> On Tue, Mar 2, 2010 at 5:39 AM, Keith Hui <buurin at gmail.com> wrote:
>> > ramtest.c:6.0: warning: Replacing undefined macro: CONFIG_SSE2 with 0
>> > ramtest.c:56.0: warning: Replacing undefined macro: CONFIG_SSE2 with 0
This should be fixed in Kconfig. Probibly in the cpu Kconfig?

>> fix this first. You really want your code to be warning-free.
>> I did a search, and the only reference (ie. this ramtest.c) is elsewhere
> in
> the code - src/lib/. That may be used by something else.
>> >                 edosd |= 0x04;  // <<< ABORT!
>> did you try just edosd = edosd | 4;
>> just wondering if it's that simple.
>> I could try tonight. But I used both notations fearing that romcc
> support more obscure constructs, and both work in other places.
>> >That's with the clock chip my board uses. Where should this code be
>> > placed?
>> depends on the chip I assume. Very, very early is my bet.
>> I'm mean where in the source tree should I put it. Southbridge,
> mainboard-specific romstage, or northbridge?
I would say romstage.c just after early_smbus runs.
>> >
>> > The vendor BIOS placed the PIIX4E power management device base port at
>> > 0xE400, and its SMBus base port at 0xE800. Coreboot has its SMBus base
>> port
>> > at 0x0F00. If I want to change the base port to match vendor BIOS,
> where
>> > should it be made?
>> Why? We've never seen a need to match these addresses up.
>> So that when I disassemble my coreboot image, I can look at it side by
> side
> with vendor BIOS and check that it's doing the right thing.
> I also don't know if there's anything else in the 0x0F00 port range.
> This may also become an issue when the ACPI tables in vendor BIOS gets
> carried over here and actually gets wired up.
I wouldn't worry to much about ACPI now. You have a ways to go before you
get to that point.

Joseph Smith

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