From 7920954bd2bd9d49013378a722fb2325cbbeadeb Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Fri, 26 Nov 2010 15:45:34 +0100 Subject: [PATCH] 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 --- arch/powerpc/cpu/ppc4xx/start.S | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/cpu/ppc4xx/start.S b/arch/powerpc/cpu/ppc4xx/start.S index 65195f5..0e75794 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) /* -- 2.7.4