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ppc/85xx: Disable all async interrupt sources when we boot
We should make sure to clear MSR[ME, CE, DE] when we boot an OS image since we have changed the exception vectors and the OSes vectors might not be setup we should avoid async interrupts at all costs. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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@ -364,5 +364,16 @@ extern void setup_ivors(void);
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void arch_preboot_os(void)
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void arch_preboot_os(void)
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{
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{
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u32 msr;
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/*
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* We are changing interrupt offsets and are about to boot the OS so
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* we need to make sure we disable all async interrupts. EE is already
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* disabled by the time we get called.
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*/
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msr = mfmsr();
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msr &= ~(MSR_ME|MSR_CE|MSR_DE);
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mtmsr(msr);
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setup_ivors();
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setup_ivors();
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}
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}
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