diff options
| -rw-r--r-- | README | 7 | ||||
| -rw-r--r-- | drivers/mtd/cfi_flash.c | 46 |
2 files changed, 23 insertions, 30 deletions
@@ -2043,6 +2043,13 @@ Configuration Settings: This option also enables the building of the cfi_flash driver in the drivers directory +- CFG_FLASH_USE_BUFFER_WRITE + Use buffered writes to flash. + +- CONFIG_FLASH_SPANSION_S29WS_N + s29ws-n MirrorBit flash has non-standard addresses for buffered + write commands. + - CFG_FLASH_QUIET_TEST If this option is defined, the common CFI flash doesn't print it's warning upon not recognized FLASH banks. This diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c index 40fddcd..e3cfb8a 100644 --- a/drivers/mtd/cfi_flash.c +++ b/drivers/mtd/cfi_flash.c @@ -844,25 +844,29 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, void *dst = map_physmem(dest, len, MAP_NOCACHE); void *dst2 = dst; int flag = 0; + uint offset = 0; + unsigned int shift; switch (info->portwidth) { case FLASH_CFI_8BIT: - cnt = len; + shift = 0; break; case FLASH_CFI_16BIT: - cnt = len >> 1; + shift = 1; break; case FLASH_CFI_32BIT: - cnt = len >> 2; + shift = 2; break; case FLASH_CFI_64BIT: - cnt = len >> 3; + shift = 3; break; default: retcode = ERR_INVAL; goto out_unmap; } + cnt = len >> shift; + while ((cnt-- > 0) && (flag == 0)) { switch (info->portwidth) { case FLASH_CFI_8BIT: @@ -906,23 +910,7 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, if (retcode == ERR_OK) { /* reduce the number of loops by the width of * the port */ - switch (info->portwidth) { - case FLASH_CFI_8BIT: - cnt = len; - break; - case FLASH_CFI_16BIT: - cnt = len >> 1; - break; - case FLASH_CFI_32BIT: - cnt = len >> 2; - break; - case FLASH_CFI_64BIT: - cnt = len >> 3; - break; - default: - retcode = ERR_INVAL; - goto out_unmap; - } + cnt = len >> shift; flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { switch (info->portwidth) { @@ -959,36 +947,34 @@ static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, case CFI_CMDSET_AMD_STANDARD: case CFI_CMDSET_AMD_EXTENDED: flash_unlock_seq(info,0); - flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_TO_BUFFER); + +#ifdef CONFIG_FLASH_SPANSION_S29WS_N + offset = ((unsigned long)dst - info->start[sector]) >> shift; +#endif + flash_write_cmd(info, sector, offset, AMD_CMD_WRITE_TO_BUFFER); + cnt = len >> shift; + flash_write_cmd(info, sector, offset, (uchar)cnt - 1); switch (info->portwidth) { case FLASH_CFI_8BIT: - cnt = len; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { flash_write8(flash_read8(src), dst); src += 1, dst += 1; } break; case FLASH_CFI_16BIT: - cnt = len >> 1; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { flash_write16(flash_read16(src), dst); src += 2, dst += 2; } break; case FLASH_CFI_32BIT: - cnt = len >> 2; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { flash_write32(flash_read32(src), dst); src += 4, dst += 4; } break; case FLASH_CFI_64BIT: - cnt = len >> 3; - flash_write_cmd (info, sector, 0, (uchar) cnt - 1); while (cnt-- > 0) { flash_write64(flash_read64(src), dst); src += 8, dst += 8; |