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| author | Haiying Wang <Haiying.Wang@freescale.com> | 2007-02-21 16:52:31 +0100 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2007-02-21 16:52:31 +0100 |
| commit | 3a197b2fe49d6fa03978e60af2394efe9c70b527 (patch) | |
| tree | 829eea16bc1c69fbf27545788bb104cda033f3e8 /drivers | |
| parent | da04995c7dc6772013a9a0dc5c767f190c402478 (diff) | |
| download | blackbird-obmc-uboot-3a197b2fe49d6fa03978e60af2394efe9c70b527.tar.gz blackbird-obmc-uboot-3a197b2fe49d6fa03978e60af2394efe9c70b527.zip | |
[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.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c index 696f9a47ad..5579a1efc1 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) |
