[LinuxBIOS] Geode GX1 and IRQ tables

Stefan Reinauer stepan at openbios.org
Sat Dec 3 16:30:59 CET 2005

* joep at frog.nl <joep at frog.nl> [051203 16:04]:
> This reason is that linux is not able to locate the interrupt table,
> because linuxbios failed to copy the table to the area at 0xf0000:
> ....
> Copying IRQ routing tables to 0xf0000...done.
> Verifing copy of IRQ routing tables at 0xf0000...failed
> Moving GDT to 0x500...ok
> Wrote linuxbios table at: 00000530 - 000006b4  checksum e72d
> I saw that this issue was discussed earlier in this list (March 2005,
> started by ramesh), but I found no reference as to if and how it was ever
> solved.

Are you using LinuxBIOS v1 or v2? Try disabling CONFIG_COMPRESS. 

The bios area around 0xf0000 is probably readonly, so the write fails.
CONFIG_COMPRESS will leave the in-flash copy of the pirq table readable
for Linux.


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