From: Dave Liu <daveliu@freescale.com>
Date: Fri, 30 Oct 2009 23:59:55 +0000 (+0800)
Subject: ppc/85xx: Fix misc L2 cache enabling bug
X-Git-Tag: v2009.11-rc2~67
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ff88229549e08fdd3f9127c1cc4db11a3576250f;p=oweals%2Fu-boot.git

ppc/85xx: Fix misc L2 cache enabling bug

We need loop-check the flash clear lock and enable bit for L2 cache.

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---

diff --git a/cpu/mpc85xx/release.S b/cpu/mpc85xx/release.S
index a1ae78a7f5..433ff02544 100644
--- a/cpu/mpc85xx/release.S
+++ b/cpu/mpc85xx/release.S
@@ -102,18 +102,22 @@ __secondary_start_page:
 #ifdef CONFIG_BACKSIDE_L2_CACHE
 	/* Enable/invalidate the L2 cache */
 	msync
-	lis	r3,(L2CSR0_L2FI|L2CSR0_L2LFC)@h
-	ori	r3,r3,(L2CSR0_L2FI|L2CSR0_L2LFC)@l
-	mtspr	SPRN_L2CSR0,r3
+	lis	r2,(L2CSR0_L2FI|L2CSR0_L2LFC)@h
+	ori	r2,r2,(L2CSR0_L2FI|L2CSR0_L2LFC)@l
+	mtspr	SPRN_L2CSR0,r2
 1:
 	mfspr	r3,SPRN_L2CSR0
-	andis.	r1,r3,L2CSR0_L2FI@h
+	and.	r1,r3,r2
 	bne	1b
 
 	lis	r3,CONFIG_SYS_INIT_L2CSR0@h
 	ori	r3,r3,CONFIG_SYS_INIT_L2CSR0@l
 	mtspr	SPRN_L2CSR0,r3
 	isync
+2:
+	mfspr	r3,SPRN_L2CSR0
+	andis.	r1,r3,L2CSR0_L2E@h
+	beq	2b
 #endif
 
 #define EPAPR_MAGIC		(0x45504150)