diff options
Diffstat (limited to 'common/cmd_nand.c')
| -rw-r--r-- | common/cmd_nand.c | 96 |
1 files changed, 49 insertions, 47 deletions
diff --git a/common/cmd_nand.c b/common/cmd_nand.c index 0a366d3..a240c37 100644 --- a/common/cmd_nand.c +++ b/common/cmd_nand.c @@ -164,6 +164,47 @@ out: return 0; } +#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK +static void print_status(ulong start, ulong end, ulong erasesize, int status) +{ + printf("%08lx - %08lx: %08lx blocks %s%s%s\n", + start, + end - 1, + (end - start) / erasesize, + ((status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""), + ((status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""), + ((status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : "")); +} + +static void do_nand_status(nand_info_t *nand) +{ + ulong block_start = 0; + ulong off; + int last_status = -1; + + struct nand_chip *nand_chip = nand->priv; + /* check the WP bit */ + nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1); + printf("device is %swrite protected\n", + (nand_chip->read_byte(nand) & 0x80 ? + "NOT " : "")); + + for (off = 0; off < nand->size; off += nand->erasesize) { + int s = nand_get_lock_status(nand, off); + + /* print message only if status has changed */ + if (s != last_status && off != 0) { + print_status(block_start, off, nand->erasesize, + last_status); + block_start = off; + } + last_status = s; + } + /* Print the last block info */ + print_status(block_start, off, nand->erasesize, last_status); +} +#endif + int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { int i, dev, ret = 0; @@ -383,8 +424,9 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) return 1; } +#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK if (strcmp(cmd, "lock") == 0) { - int tight = 0; + int tight = 0; int status = 0; if (argc == 3) { if (!strcmp("tight", argv[2])) @@ -392,44 +434,8 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) if (!strcmp("status", argv[2])) status = 1; } -/* - * ! BROKEN ! - * - * TODO: must be implemented and tested by someone with HW - */ -#if 0 if (status) { - ulong block_start = 0; - ulong off; - int last_status = -1; - - struct nand_chip *nand_chip = nand->priv; - /* check the WP bit */ - nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1); - printf("device is %swrite protected\n", - (nand_chip->read_byte(nand) & 0x80 ? - "NOT " : "")); - - for (off = 0; off < nand->size; off += nand->writesize) { - int s = nand_get_lock_status(nand, off); - - /* print message only if status has changed - * or at end of chip - */ - if (off == nand->size - nand->writesize - || (s != last_status && off != 0)) { - - printf("%08lx - %08lx: %8d pages %s%s%s\n", - block_start, - off-1, - (off-block_start)/nand->writesize, - ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""), - ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""), - ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : "")); - } - - last_status = s; - } + do_nand_status(nand); } else { if (!nand_lock(nand, tight)) { puts("NAND flash successfully locked\n"); @@ -438,7 +444,6 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) return 1; } } -#endif return 0; } @@ -446,12 +451,6 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0) return 1; -/* - * ! BROKEN ! - * - * TODO: must be implemented and tested by someone with HW - */ -#if 0 if (!nand_unlock(nand, off, size)) { puts("NAND flash successfully unlocked\n"); } else { @@ -459,9 +458,9 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) "write and erase will probably fail\n"); return 1; } -#endif return 0; } +#endif usage: printf("Usage:\n%s\n", cmdtp->usage); @@ -483,9 +482,12 @@ U_BOOT_CMD(nand, 5, 1, do_nand, "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n" "nand markbad off - mark bad block at offset (UNSAFE)\n" "nand biterr off - make a bit error at offset (UNSAFE)\n" +#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK "nand lock [tight] [status]\n" " bring nand to lock state or display locked pages\n" - "nand unlock [offset] [size] - unlock section\n"); + "nand unlock [offset] [size] - unlock section\n" +#endif +); static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand, ulong offset, ulong addr, char *cmd) |