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authorHaiying Wang <Haiying.Wang@freescale.com>2007-02-21 16:52:31 +0100
committerStefan Roese <sr@denx.de>2007-02-21 16:52:31 +0100
commit3a197b2fe49d6fa03978e60af2394efe9c70b527 (patch)
tree829eea16bc1c69fbf27545788bb104cda033f3e8 /drivers
parentda04995c7dc6772013a9a0dc5c767f190c402478 (diff)
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[PATCH v3] Add sync to ensure flash_write_cmd is fully finished
Some CPUs like PPC, BLACKFIN need sync() to ensure cfi flash write command is fully finished. The sync() is defined in each CPU's io.h file. For those CPUs which do not need sync for now, a dummy sync() is defined in their io.h as well. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cfi_flash.c16
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c
index 696f9a4..5579a1e 100644
--- a/drivers/cfi_flash.c
+++ b/drivers/cfi_flash.c
@@ -36,6 +36,7 @@
#include <common.h>
#include <asm/processor.h>
+#include <asm/io.h>
#include <asm/byteorder.h>
#include <environment.h>
#ifdef CFG_FLASH_CFI_DRIVER
@@ -931,27 +932,18 @@ static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset
debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr.cp, cmd,
cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
*addr.cp = cword.c;
-#ifdef CONFIG_BLACKFIN
- asm("ssync;");
-#endif
break;
case FLASH_CFI_16BIT:
debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr.wp,
cmd, cword.w,
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
*addr.wp = cword.w;
-#ifdef CONFIG_BLACKFIN
- asm("ssync;");
-#endif
break;
case FLASH_CFI_32BIT:
debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr.lp,
cmd, cword.l,
info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
*addr.lp = cword.l;
-#ifdef CONFIG_BLACKFIN
- asm("ssync;");
-#endif
break;
case FLASH_CFI_64BIT:
#ifdef DEBUG
@@ -966,11 +958,11 @@ static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset
}
#endif
*addr.llp = cword.ll;
-#ifdef CONFIG_BLACKFIN
- asm("ssync;");
-#endif
break;
}
+
+ /* Ensure all the instructions are fully finished */
+ sync();
}
static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)