From: York Sun <yorksun@freescale.com>
Date: Fri, 5 Apr 2013 13:07:13 +0000 (+0000)
Subject: powerpc/mpc85xx: Clear L1 D-cache lock
X-Git-Tag: v2013.07-rc1~54^2
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=a71d45d706a5b51c348160163b6c159632273fed;p=oweals%2Fu-boot.git

powerpc/mpc85xx: Clear L1 D-cache lock

dcbi instruction has been used to clear D-cache lock. However, the cache
lock is persistent for e6500 core. Use dcblc to clear the lock explicitly.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
---

diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S
index e413e4ae99..4f0480b768 100644
--- a/arch/powerpc/cpu/mpc85xx/start.S
+++ b/arch/powerpc/cpu/mpc85xx/start.S
@@ -1906,6 +1906,7 @@ unlock_ram_in_cache:
 	slwi	r4,r4,(10 - 1 - L1_CACHE_SHIFT)
 	mtctr	r4
 1:	dcbi	r0,r3
+	dcblc	r0,r3
 	addi	r3,r3,CONFIG_SYS_CACHELINE_SIZE
 	bdnz	1b
 	sync