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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2010-11-27 00:00:38 +0800 |
|---|---|---|
| committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2010-12-03 01:53:12 +0800 |
| commit | 7c487f37307795ed4ed6ad79a76f61f2b9ccfeb6 (patch) | |
| tree | ba40219780103b05039e89a3cea4ea718e15043d | |
| parent | 322b9af8755472bdec13515dd61196d768f0b02b (diff) | |
| download | barebox-7c487f37307795ed4ed6ad79a76f61f2b9ccfeb6.tar.gz barebox-7c487f37307795ed4ed6ad79a76f61f2b9ccfeb6.tar.xz | |
cfi_flash: add Atmel real protect flash support
based on U-Boot
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
| -rw-r--r-- | drivers/nor/cfi_flash.h | 4 | ||||
| -rw-r--r-- | drivers/nor/cfi_flash_amd.c | 17 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/nor/cfi_flash.h b/drivers/nor/cfi_flash.h index ee1a6f0ed3..047a0359b4 100644 --- a/drivers/nor/cfi_flash.h +++ b/drivers/nor/cfi_flash.h @@ -121,6 +121,10 @@ extern struct cfi_cmd_set cfi_cmd_set_amd; #define AMD_ADDR_START ((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555) #define AMD_ADDR_ACK ((info->portwidth == FLASH_CFI_8BIT) ? 0x555 : 0x2AA) +#define ATM_CMD_UNLOCK_SECT 0x70 +#define ATM_CMD_SOFTLOCK_START 0x80 +#define ATM_CMD_LOCK_SECT 0x40 + #define FLASH_OFFSET_MANUFACTURER_ID 0x00 #define FLASH_OFFSET_DEVICE_ID 0x01 #define FLASH_OFFSET_DEVICE_ID2 0x0E diff --git a/drivers/nor/cfi_flash_amd.c b/drivers/nor/cfi_flash_amd.c index b10f7b267d..dffd6f0208 100644 --- a/drivers/nor/cfi_flash_amd.c +++ b/drivers/nor/cfi_flash_amd.c @@ -135,6 +135,23 @@ static int amd_flash_write_cfibuffer (struct flash_info *info, ulong dest, const static int amd_flash_real_protect (struct flash_info *info, long sector, int prot) { + if (info->manufacturer_id != (uchar)ATM_MANUFACT) + return 0; + + if (prot) { + flash_unlock_seq (info); + flash_write_cmd (info, 0, AMD_ADDR_START, + ATM_CMD_SOFTLOCK_START); + flash_unlock_seq (info); + flash_write_cmd (info, sector, 0, ATM_CMD_LOCK_SECT); + } else { + flash_write_cmd (info, 0, AMD_ADDR_START, + AMD_CMD_UNLOCK_START); + if (info->device_id == ATM_ID_BV6416) + flash_write_cmd (info, sector, 0, + ATM_CMD_UNLOCK_SECT); + } + return 0; } |