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[POWERPC] Reworking machine check handling and Fix 440/440A

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This adds a cputable function pointer for the CPU-side machine
check handling. The semantic is still the same as the old one,
the one in ppc_md. overrides the one in cputable, though
ultimately we'll want to change that so the CPU gets first.

This removes CONFIG_440A which was a problem for multiplatform
kernels and instead fixes up the IVOR at runtime from a setup_cpu
function. The "A" version of the machine check also tweaks the
regs->trap value to differenciate the 2 versions at the C level.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This commit is contained in:
Benjamin Herrenschmidt
2007-12-21 15:39:21 +11:00
committed by Josh Boyer
parent c2a7dcad9f
commit 47c0bd1ae2
11 changed files with 258 additions and 58 deletions
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9
arch/powerpc/kernel/cpu_setup_44x.S
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@@ -23,11 +23,20 @@ _GLOBAL(__setup_cpu_440epx)
mflr r4
bl __init_fpu_44x
bl __plb_disable_wrp
bl __fixup_440A_mcheck
mtlr r4
blr
_GLOBAL(__setup_cpu_440grx)
b __plb_disable_wrp
_GLOBAL(__setup_cpu_440gx)
_GLOBAL(__setup_cpu_440spe)
b __fixup_440A_mcheck
/* Temporary fixup for arch/ppc until we kill the whole thing */
#ifndef CONFIG_PPC_MERGE
_GLOBAL(__fixup_440A_mcheck)
blr
#endif
/* enable APU between CPU and FPU */
_GLOBAL(__init_fpu_44x)