Zaurus: Trying to execute code outside RAM or ROM with latest kernel

[Benoît Canet]

Compiling the latest kernel "commit dc47d3810cdcb4f32bfa31d50f26af97aced0638" for zaurus machines
with the linaro toolchain and booting it in 11.10 qemu-system-arm leads to:

benoit@Laure:~/linux-2.6$ qemu-system-arm -M spitz --kernel arch/arm/boot/zImage
qemu: fatal: Trying to execute code outside RAM or ROM at 0xc0355000

R00=0000397f R01=000002c9 R02=a0000100 R03=c0355000
R04=a0004000 R05=0000001f R06=00003905 R07=00000c02
R08=a0004000 R09=69054114 R10=a0369f94 R11=00000020
R12=e28604e0 R13=c0355000 R14=a0008040 R15=c0355000
PSR=600001d3 -ZC- A svc32
Aborted

[Peter Maydell (pmaydell)]

This regression is introduced in the "Add trustzone support" patch.

[Peter Maydell (pmaydell)]

The trustzone support patch has mangled handling of cp15 registers for xscale cores, so we can no longer successfully write c1,c0,0,0. That's a shame because that's the SCTLR and it includes the MMU enable bit :-)

[Peter Maydell (pmaydell)]

I've rearranged this code to be a bit more careful about not disarranging the legacy decoding of pre-v6 cores, and zaurus boots again. Fixes in qemu-linaro in git and should be in the next release.