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-rw-r--r--cpu/mpc824x/start.S17
1 files changed, 16 insertions, 1 deletions
diff --git a/cpu/mpc824x/start.S b/cpu/mpc824x/start.S
index a22137ceb6..9ff052c3b0 100644
--- a/cpu/mpc824x/start.S
+++ b/cpu/mpc824x/start.S
@@ -526,11 +526,26 @@ relocate_code:
stwu r0,-4(r7)
bdnz 3b
+4:
+#if !defined(CONFIG_BMW)
+/* Unlock the data cache and invalidate locked area */
+ xor r0, r0, r0
+ mtspr 1011, r0
+ lis r4, CFG_INIT_RAM_ADDR@h
+ ori r4, r4, CFG_INIT_RAM_ADDR@l
+ li r0, 128
+ mtctr r0
+41:
+ dcbi r0, r4
+ addi r4, r4, 32
+ bdnz 41b
+#endif
+
/*
* Now flush the cache: note that we must start from a cache aligned
* address. Otherwise we might miss one cache line.
*/
-4: cmpwi r6,0
+ cmpwi r6,0
add r5,r3,r5
beq 7f /* Always flush prefetch queue in any case */
subi r0,r6,1
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