[coreboot] YABEL and images in LAR files

Pattrick Hueper phueper at hueper.net
Fri Dec 19 21:38:29 CET 2008

On Fri, Dec 19, 2008 at 8:37 PM, Myles Watson <mylesgw at gmail.com> wrote:
>> well following the BIOS spec (i think its somewhere in the PNP BIOS
>> spec... i have to check... ) the BIOS copies the ROM to RAM... since
>> YABEL uses its own "virtual" memory it _has_ to copy the ROM to its
>> RAM...
> Yes.  Right now there's just a redundant copy, since Coreboot copies it to
> RAM too.

true, but YABEL still has to copy it, after all the code runs from
copy... can we modify coreboot to not copy the image from ROM if YABEL
is selected, but pass the location of the image in ROM to YABEL?

>> Currently, the ROM is always copied from the Expansion ROM bar of PCI
>> devices.... i havent had to initialize any onboard devices. If there
>> is a parameter to run_bios that points to the location of the Option
>> ROM i could pass that parameter to YABEL and only use the Expansion
>> ROM BAR if that parameter is not set (null?).
> That's what I was thinking.

Ok, i will try to implement that and send patches.

Cheers, Patty

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