7025 F40 CHRP IBM

Hollis Blanchard hollis-lists at austin.rr.com
Thu Oct 25 14:08:47 EST 2001

on 21/10/01 10:03 AM, Cloves Ferreira Jr at cfj at cefetgo.br wrote:
> I am trying to produce a zImage that can boot on a 7025 F40 CHRP IBM
> workstation using linux kernel 2.4.3 with 110 tarball patches.
> I debuged some kernel code and found an abnormal execution at
> arch/ppc/kernel/i8259.c in i8259_init function. This function is called
> by arch/ppc/kernel/chrp_setup.c in chrp_init_IRQ function.
> When the start init sequence is executed a MachineCheckException is
> generated printing a text message like: OUT to bad port 21 at...

This message comes from arch/ppc/kernel/traps.c MachineCheckException()

Do you know if you have an 8259 in that machine? Unless your memory map is
very screwy (but I think it should be handled fine by the current PReP
code), there doesn't seem to be anything at 0x20 (system IO)...


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