[coreboot] CBFS issues on 440BX boards

Uwe Hermann uwe at hermann-uwe.de
Mon Oct 5 01:13:28 CEST 2009

On Sun, Oct 04, 2009 at 08:26:17PM +0200, Patrick Georgi wrote:
> Am Sonntag, den 04.10.2009, 20:08 +0200 schrieb Uwe Hermann:
> > Uncompressing coreboot to RAM.                                                  
> > Jumping to image.                                                               
> > Check CBFS header at fffedfe0                                                   
> > magic is ffffffff                                                               
> > ERROR: No valid CBFS header found!                                              
> > CBFS:  Could not find file fallback/coreboot_ram                                
> > Jumping to image.                                                               
> A magic of 0xffffffff is suspicious, are you sure the ROM is entirely
> mapped before coreboot_ram is loaded?

That was indeed the problem, thanks!

We need to check for all chipsets and boards that full ROM access is
enabled very early (before any CBFS header parsing), e.g. right after
serial port init.

The attached patch does that for all 440BX boards.

http://www.hermann-uwe.de  | http://www.holsham-traders.de
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