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authorWolfgang Denk <wd@denx.de>2008-08-14 14:56:40 +0200
committerWolfgang Denk <wd@denx.de>2008-08-14 14:56:40 +0200
commit855efd04e440754297769849f4d7fb52c7dc6bf4 (patch)
treecf7fc9b8574668957306905ac690d7bf6ffbad3b /drivers/mtd
parent4b0708093e15b412296328bf81325cf9b69fe512 (diff)
parentbecbbc7b2a1be44d38779c80ce94fb20e5e13f12 (diff)
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Merge branch 'master' of git://git.denx.de/u-boot-cfi-flash
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/cfi_flash.c49
-rw-r--r--drivers/mtd/jedec_flash.c17
2 files changed, 60 insertions, 6 deletions
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 402d835..58295fe 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -102,6 +102,10 @@
#define AMD_STATUS_TOGGLE 0x40
#define AMD_STATUS_ERROR 0x20
+#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
@@ -1350,12 +1354,45 @@ int flash_real_protect (flash_info_t * info, long sector, int prot)
{
int retcode = 0;
- flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
- flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
- if (prot)
- flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
- else
- flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
+ switch (info->vendor) {
+ case CFI_CMDSET_INTEL_PROG_REGIONS:
+ case CFI_CMDSET_INTEL_STANDARD:
+ flash_write_cmd (info, sector, 0,
+ FLASH_CMD_CLEAR_STATUS);
+ flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
+ if (prot)
+ flash_write_cmd (info, sector, 0,
+ FLASH_CMD_PROTECT_SET);
+ else
+ flash_write_cmd (info, sector, 0,
+ FLASH_CMD_PROTECT_CLEAR);
+ break;
+ case CFI_CMDSET_AMD_EXTENDED:
+ case CFI_CMDSET_AMD_STANDARD:
+#ifdef CONFIG_FLASH_CFI_LEGACY
+ case CFI_CMDSET_AMD_LEGACY:
+#endif
+ /* U-Boot only checks the first byte */
+ if (info->manufacturer_id == (uchar)ATM_MANUFACT) {
+ if (prot) {
+ flash_unlock_seq (info, 0);
+ flash_write_cmd (info, 0,
+ info->addr_unlock1,
+ ATM_CMD_SOFTLOCK_START);
+ flash_unlock_seq (info, 0);
+ flash_write_cmd (info, sector, 0,
+ ATM_CMD_LOCK_SECT);
+ } else {
+ flash_write_cmd (info, 0,
+ info->addr_unlock1,
+ AMD_CMD_UNLOCK_START);
+ if (info->device_id == ATM_ID_BV6416)
+ flash_write_cmd (info, sector,
+ 0, ATM_CMD_UNLOCK_SECT);
+ }
+ }
+ break;
+ };
if ((retcode =
flash_full_status_check (info, sector, info->erase_blk_tout,
diff --git a/drivers/mtd/jedec_flash.c b/drivers/mtd/jedec_flash.c
index 9845e93..020647a 100644
--- a/drivers/mtd/jedec_flash.c
+++ b/drivers/mtd/jedec_flash.c
@@ -234,6 +234,23 @@ static const struct amd_flash_info jedec_table[] = {
ERASEINFO(0x10000,7),
}
},
+ {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29LV800BB,
+ .name = "AMD AM29LV800BB",
+ .uaddr = {
+ [1] = MTD_UADDR_0x0555_0x02AA /* x16 */
+ },
+ .DevSize = SIZE_1MiB,
+ .CmdSet = CFI_CMDSET_AMD_LEGACY,
+ .NumEraseRegions= 4,
+ .regions = {
+ ERASEINFO(0x04000, 1),
+ ERASEINFO(0x02000, 2),
+ ERASEINFO(0x08000, 1),
+ ERASEINFO(0x10000, 15),
+ }
+ },
#endif
};