Greetings, The fallback/normal all hinges on weather it's built with cmos_failover.inc or noop_failover.inc in the southbridge. cmos_failover looks at index 0x30 in the CMOS to decide if it should jump into the normal image or not. It copies bit 0 to bit 1, zeros bit 0, and validates the checksum. IFF the CMOS checksum is valid, the RTC indicates no power failure and bit 1 (the value from bit 0) is set, it will jump to the normal image. Otherwise it will fall through.
The checksum is just the summation of index 0x31 - 0x7d then complemented. That is stored in 0x7e-7f. So you can either set USE_FALLBACK_IMAGE and edit Config to use noop_failover.inc, or just don't set 0x30 bit 0 and the checksum. G'day, sjames On Mon, 3 Mar 2003, Ronald G. Minnich wrote: > > I need to build a bios for the clearwater with no fallback/normal images. > Just a single image. > > I find myself unsure how to do this, I've not looked in depth at the > fallback/normal build stuff. > > Is there a simple option so I can build an image w/o the fallback/normal > stuff on systems like clearwater that are configured for fallback/normal? > > thanks > > ron > > _______________________________________________ > Linuxbios mailing list > [EMAIL PROTECTED] > http://www.clustermatic.org/mailman/listinfo/linuxbios > -- -------------------------steven james, director of research, linux labs ... ........ ..... .... 230 peachtree st nw ste 701 the original linux labs atlanta.ga.us 30303 -since 1995 http://www.linuxlabs.com office 404.577.7747 fax 404.577.7743 ----------------------------------------------------------------------- _______________________________________________ Linuxbios mailing list [EMAIL PROTECTED] http://www.clustermatic.org/mailman/listinfo/linuxbios
