Blackfin arch: Load P0 before storing through it

Fortunately this function is only used on old 533 revisions.

Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/blackfin/mach-common/cacheinit.S b/arch/blackfin/mach-common/cacheinit.S
index 9d475623b724..5be6b975ae4a 100644
--- a/arch/blackfin/mach-common/cacheinit.S
+++ b/arch/blackfin/mach-common/cacheinit.S
@@ -60,6 +60,9 @@ ENDPROC(_bfin_write_IMEM_CONTROL)
 
 #if defined(CONFIG_BLKFIN_DCACHE)
 ENTRY(_bfin_write_DMEM_CONTROL)
+        P0.l = (DMEM_CONTROL & 0xFFFF);
+        P0.h = (DMEM_CONTROL >> 16);
+
         CLI R1;
         SSYNC;          /* SSYNC required before writing to DMEM_CONTROL. */
         .align 8;