e7500 and ich2rom

steven james pyro at linuxlabs.com
Thu Sep 5 11:26:01 CEST 2002


I've been playing with this as well. Depending on the motherboard,
etc. the full size of the flash may not be mapped in.

It's probably worthwhile to look around in user space using /dev/mem to
try to find the actual size of the mapped in portion. The flash part will
respond to a JEDIC probe.


On Thu, 5 Sep 2002, Ronald G Minnich wrote:

> some output from printks I added:
> init_ich2rom Found: 0x8086 0x2480
> ich2rom: set 0x4e to 0x1
> ich2rom: val 0x4e IS NOW  0x1
> ioremap 0xff000000 size 0x1000000 result 0xf886d000
> it finds the part
> it sets the 0x4e register to 1 for enabling write
> 	hey! same register as the piix4e -- think this is a coincidence?
> it does the ioremap of the last (BIG) 16 MB of memory (WOW!)
> Then it does a JEDEC probe.
> Do JEDEC probes really work with this 82802AB part?
> They must have but ... Eric?
> ron
> _______________________________________________
> Linuxbios mailing list
> Linuxbios at clustermatic.org
> 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

More information about the coreboot mailing list