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Commit 029b8f66 authored by Dave Kleikamp's avatar Dave Kleikamp Committed by Josh Boyer
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powerpc/47x: Make sure mcsr is cleared before enabling machine check interrupts 



Clear the machine check syndrom register before enabling machine check
interrupts.  The initial state of the tlb can lead to parity errors being
flagged early after a cold boot.

Signed-off-by: default avatarDave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: default avatarJosh Boyer <jwboyer@linux.vnet.ibm.com>
parent 31fc0bd4

arch/powerpc/kernel/head_44x.S

+4 −0
Original line number Diff line number Diff line
@@ -113,6 +113,10 @@ _ENTRY(_start); 
	stw	r5, 0(r4)	/* Save abatron_pteptrs at a fixed location */

	stw	r6, 0(r5)



	/* Clear the Machine Check Syndrome Register */

	li	r0,0

	mtspr	SPRN_MCSR,r0



	/* Let's move on */

	lis	r4,start_kernel@h

	ori	r4,r4,start_kernel@l