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authorStefan Roese <sr@denx.de>2010-11-26 15:45:34 +0100
committerStefan Roese <sr@denx.de>2010-11-28 11:07:37 +0100
commit7920954bd2bd9d49013378a722fb2325cbbeadeb (patch)
treef298231dc2ba65efd1ed8e4dcc71458e277d1ab5
parent28e94bb2f7b796f58587752ab018b7d23fdc9061 (diff)
downloadu-boot-linaro-natty-7920954bd2bd9d49013378a722fb2325cbbeadeb.tar.gz
ppc4xx: Flush complete dcache in relocate_code()
When the cache is enabled in SDRAM we need to flush not only the global data area but also the bd_info struct in relocate_code. This patch now flushed the complete dcache (all dcache lines) via flush_dcache() instead of adding a flush_dcache_range() call for bd_info since this is faster. Signed-off-by: Stefan Roese <sr@denx.de>
-rw-r--r--arch/powerpc/cpu/ppc4xx/start.S13
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/powerpc/cpu/ppc4xx/start.S b/arch/powerpc/cpu/ppc4xx/start.S
index 65195f528..0e75794d2 100644
--- a/arch/powerpc/cpu/ppc4xx/start.S
+++ b/arch/powerpc/cpu/ppc4xx/start.S
@@ -1389,8 +1389,8 @@ in32r:
relocate_code:
#if defined(CONFIG_4xx_DCACHE) || defined(CONFIG_SYS_INIT_DCACHE_CS)
/*
- * We need to flush the initial global data (gd_t) before the dcache
- * will be invalidated.
+ * We need to flush the initial global data (gd_t) and bd_info
+ * before the dcache will be invalidated.
*/
/* Save registers */
@@ -1398,10 +1398,11 @@ relocate_code:
mr r10, r4
mr r11, r5
- /* Flush initial global data range */
- mr r3, r4
- addi r4, r4, GENERATED_GBL_DATA_SIZE@l
- bl flush_dcache_range
+ /*
+ * Flush complete dcache, this is faster than flushing the
+ * ranges for global_data and bd_info instead.
+ */
+ bl flush_dcache
#if defined(CONFIG_SYS_INIT_DCACHE_CS)
/*