X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fhead_44x.S;h=bd4fe9e7278b935f90521c248d80d84222d6e62b;hb=9dce3ce5c55c848f00429005a46fd6246cfabfbe;hp=f3a1ea9d7fe44d8e45371d3f9b91863277fa4756;hpb=8a0ca91e1db5de5eb5b18cfa919d52ff8be375af;p=deliverable%2Flinux.git

diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index f3a1ea9d7fe4..bd4fe9e7278b 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -68,6 +68,17 @@ _ENTRY(_start);
 	mr	r27,r7
 	li	r24,0		/* CPU number */
 
+/*
+ * In case the firmware didn't do it, we apply some workarounds
+ * that are good for all 440 core variants here
+ */
+	mfspr	r3,SPRN_CCR0
+	rlwinm	r3,r3,0,0,27	/* disable icache prefetch */
+	isync
+	mtspr	SPRN_CCR0,r3
+	isync
+	sync
+
 /*
  * Set up the initial MMU state
  *