[coreboot] [PATCH] LAR: Don't clobber top 8 bytes

Stefan Reinauer stepan at coresystems.de
Wed Dec 3 12:48:14 CET 2008

Carl-Daniel Hailfinger wrote:
> LAR currently overwrites the top 13 bytes (0xfffff3-0xffffff) of the
> bootblock with zeros, then it stores the ROM size in 0xfffff4-0xfffff7.
> The top 8 bytes are unused in that scheme.
> Leave the top 8 bytes as they are and allow us to store something in
> there during the bootblock build process. The byte at 0xfffff3 is 0xff
> by default on x86 and setting it to 0 is not needed.
> Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>


They're unused, and until they are used, they should be cleared to a
consistent state.

coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br.
      Tel.: +49 761 7668825 • Fax: +49 761 7664613
Email: info at coresystems.dehttp://www.coresystems.de/
Registergericht: Amtsgericht Freiburg • HRB 7656
Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866

More information about the coreboot mailing list