603 CPUs have the same issue that some 750 CPUs have in that they can crash
in funny ways if a store from an FPU register instruction is executed on a
register that has never been initialized since power on. This patch fixes
it by making sure all FP registers have been properly initialized at kernel
boot.
Signed-off-by: Kumar Gala <[EMAIL PROTECTED]>
---
Paul, I've put this into my powerpc-next tree since its a pretty trivial
patch.
- k
arch/powerpc/kernel/cpu_setup_6xx.S | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/cpu_setup_6xx.S
b/arch/powerpc/kernel/cpu_setup_6xx.S
index f1ee0b3..4a1c3cd 100644
--- a/arch/powerpc/kernel/cpu_setup_6xx.S
+++ b/arch/powerpc/kernel/cpu_setup_6xx.S
@@ -17,7 +17,14 @@
#include <asm/cache.h>
_GLOBAL(__setup_cpu_603)
- b setup_common_caches
+ mflr r4
+BEGIN_FTR_SECTION
+ bl __init_fpu_registers
+END_FTR_SECTION_IFCLR(CPU_FTR_FPU_UNAVAILABLE)
+ bl __init_fpu_registers
+ bl setup_common_caches
+ mtlr r4
+ blr
_GLOBAL(__setup_cpu_604)
mflr r4
bl setup_common_caches
--
1.5.4.1
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