[U-Boot] [RFC PATCH] arm: cache_v7: fix dcache invalidation

Markus Niebel
2015-08-28T13:12:08Z

From: Markus Niebel <Markus.Niebel@tq-group.com>

according to

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka14802.html

and the clarification given by Marc Rutland of ARM

data cache invalidation should go from outer to inner cache.
This patch corrects the order in

flush_dcache_range
flush_dcache_all

Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com>
---
arch/arm/cpu/armv7/cache_v7.c | 8 ++++----
include/configs/tqma6.h | 3 ++-
2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/arch/arm/cpu/armv7/cache_v7.c b/arch/arm/cpu/armv7/cache_v7.c
index a5aa4fa..81eb286 100644
--- a/arch/arm/cpu/armv7/cache_v7.c
+++ b/arch/arm/cpu/armv7/cache_v7.c
@@ -235,9 +235,9 @@ static void v7_inval_tlb(void)

void invalidate_dcache_all(void)
{
- v7_maint_dcache_all(ARMV7_DCACHE_INVAL_ALL);
-
v7_outer_cache_inval_all();
+
+ v7_maint_dcache_all(ARMV7_DCACHE_INVAL_ALL);
}

/*
@@ -257,9 +257,9 @@ void flush_dcache_all(void)
*/
void invalidate_dcache_range(unsigned long start, unsigned long stop)
{
- v7_dcache_maint_range(start, stop, ARMV7_DCACHE_INVAL_RANGE);
-
v7_outer_cache_inval_range(start, stop);
+
+ v7_dcache_maint_range(start, stop, ARMV7_DCACHE_INVAL_RANGE);
}

/*
diff --git a/include/configs/tqma6.h b/include/configs/tqma6.h
index f7fade1..0a0cbbe 100644
--- a/include/configs/tqma6.h
+++ b/include/configs/tqma6.h
@@ -111,10 +111,11 @@

#define CONFIG_ARP_TIMEOUT 200UL
/* Network config - Allow larger/faster download for TFTP/NFS */
+/*
#define CONFIG_IP_DEFRAG
#define CONFIG_TFTP_BLOCKSIZE 4096
#define CONFIG_NFS_READ_SIZE 4096
-
+*/
/* Command definition */
#define CONFIG_CMD_BMODE

--
2.3.0