/* * Driver for NAND support, Rick Bronson * borrowed heavily from: * (c) 1999 Machine Vision Holdings, Inc. * (c) 1999, 2000 David Woodhouse * * Ported 'dynenv' to 'nand env.oob' command * (C) 2010 Nanometrics, Inc. * 'dynenv' -- Dynamic environment offset in NAND OOB * (C) Copyright 2006-2007 OpenMoko, Inc. * Added 16-bit nand support * (C) 2004 Texas Instruments * * Copyright 2010, 2012 Freescale Semiconductor * The portions of this file whose copyright is held by Freescale and which * are not considered a derived work of GPL v2-only code may be distributed * and/or modified under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * The function nand_biterror() in this file is inspired from * mtd-utils/nand-utils/nandflipbits.c which was released under GPLv2 * only */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "legacy-mtd-utils.h" #if defined(CONFIG_CMD_MTDPARTS) /* partition handling routines */ int mtdparts_init(void); int find_dev_and_part(const char *id, struct mtd_device **dev, u8 *part_num, struct part_info **part); #endif #define MAX_NUM_PAGES 64 static int nand_biterror(struct mtd_info *mtd, ulong off, int bit) { int ret = 0; int page = 0; ulong block_off; u_char *datbuf[MAX_NUM_PAGES]; /* Data and OOB */ u_char data; int pages_per_blk = mtd->erasesize / mtd->writesize; struct erase_info einfo; if (pages_per_blk > MAX_NUM_PAGES) { printf("Too many pages in one erase block\n"); return 1; } if (bit < 0 || bit > 7) { printf("bit position 0 to 7 is allowed\n"); return 1; } /* Allocate memory */ memset(datbuf, 0, sizeof(datbuf)); for (page = 0; page < pages_per_blk ; page++) { datbuf[page] = malloc(mtd->writesize + mtd->oobsize); if (!datbuf[page]) { printf("No memory for page buffer\n"); ret = -ENOMEM; goto free_memory; } } /* Align to erase block boundary */ block_off = off & (~(mtd->erasesize - 1)); /* Read out memory as first step */ for (page = 0; page < pages_per_blk ; page++) { struct mtd_oob_ops ops; loff_t addr = (loff_t)block_off; memset(&ops, 0, sizeof(ops)); ops.datbuf = datbuf[page]; ops.oobbuf = datbuf[page] + mtd->writesize; ops.len = mtd->writesize; ops.ooblen = mtd->oobsize; ops.mode = MTD_OPS_RAW; ret = mtd_read_oob(mtd, addr, &ops); if (ret < 0) { printf("Error (%d) reading page %08lx\n", ret, block_off); ret = 1; goto free_memory; } block_off += mtd->writesize; } /* Erase the block */ memset(&einfo, 0, sizeof(einfo)); einfo.mtd = mtd; /* Align to erase block boundary */ einfo.addr = (loff_t)(off & (~(mtd->erasesize - 1))); einfo.len = mtd->erasesize; ret = mtd_erase(mtd, &einfo); if (ret < 0) { printf("Error (%d) nand_erase_nand page %08llx\n", ret, einfo.addr); ret = 1; goto free_memory; } /* Twist a bit in data part */ block_off = off & (mtd->erasesize - 1); data = datbuf[block_off / mtd->writesize][block_off % mtd->writesize]; data ^= (1 << bit); datbuf[block_off / mtd->writesize][block_off % mtd->writesize] = data; printf("Flip data at 0x%lx with xor 0x%02x (bit=%d) to value=0x%02x\n", off, (1 << bit), bit, data); /* Write back twisted data and unmodified OOB */ /* Align to erase block boundary */ block_off = off & (~(mtd->erasesize - 1)); for (page = 0; page < pages_per_blk; page++) { struct mtd_oob_ops ops; loff_t addr = (loff_t)block_off; memset(&ops, 0, sizeof(ops)); ops.datbuf = datbuf[page]; ops.oobbuf = datbuf[page] + mtd->writesize; ops.len = mtd->writesize; ops.ooblen = mtd->oobsize; ops.mode = MTD_OPS_RAW; ret = mtd_write_oob(mtd, addr, &ops); if (ret < 0) { printf("Error (%d) write page %08lx\n", ret, block_off); ret = 1; goto free_memory; } block_off += mtd->writesize; } free_memory: for (page = 0; page < pages_per_blk ; page++) { if (datbuf[page]) free(datbuf[page]); } return ret; } static int nand_dump(struct mtd_info *mtd, ulong off, int only_oob, int repeat) { int i; u_char *datbuf, *oobbuf, *p; static loff_t last; int ret = 0; if (repeat) off = last + mtd->writesize; last = off; datbuf = memalign(ARCH_DMA_MINALIGN, mtd->writesize); if (!datbuf) { puts("No memory for page buffer\n"); return 1; } oobbuf = memalign(ARCH_DMA_MINALIGN, mtd->oobsize); if (!oobbuf) { puts("No memory for page buffer\n"); ret = 1; goto free_dat; } off &= ~(mtd->writesize - 1); loff_t addr = (loff_t) off; struct mtd_oob_ops ops; memset(&ops, 0, sizeof(ops)); ops.datbuf = datbuf; ops.oobbuf = oobbuf; ops.len = mtd->writesize; ops.ooblen = mtd->oobsize; ops.mode = MTD_OPS_RAW; i = mtd_read_oob(mtd, addr, &ops); if (i < 0) { printf("Error (%d) reading page %08lx\n", i, off); ret = 1; goto free_all; } printf("Page %08lx dump:\n", off); if (!only_oob) { i = mtd->writesize >> 4; p = datbuf; while (i--) { printf("\t%02x %02x %02x %02x %02x %02x %02x %02x" " %02x %02x %02x %02x %02x %02x %02x %02x\n", p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]); p += 16; } } puts("OOB:\n"); i = mtd->oobsize >> 3; p = oobbuf; while (i--) { printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n", p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); p += 8; } free_all: free(oobbuf); free_dat: free(datbuf); return ret; } /* ------------------------------------------------------------------------- */ static int set_dev(int dev) { struct mtd_info *mtd = get_nand_dev_by_index(dev); if (!mtd) return -ENODEV; if (nand_curr_device == dev) return 0; printf("Device %d: %s", dev, mtd->name); puts("... is now current device\n"); nand_curr_device = dev; #ifdef CONFIG_SYS_NAND_SELECT_DEVICE board_nand_select_device(mtd_to_nand(mtd), dev); #endif return 0; } #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK static void print_status(ulong start, ulong end, ulong erasesize, int status) { /* * Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is * not the same as others. Instead of bit 1 being lock, it is * #lock_tight. To make the driver support either format, ignore bit 1 * and use only bit 0 and bit 2. */ 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_UNLOCK) ? "LOCK " : ""), ((status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : "")); } static void do_nand_status(struct mtd_info *mtd) { ulong block_start = 0; ulong off; int last_status = -1; struct nand_chip *nand_chip = mtd_to_nand(mtd); /* check the WP bit */ nand_chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); printf("device is %swrite protected\n", (nand_chip->read_byte(mtd) & 0x80 ? "NOT " : "")); for (off = 0; off < mtd->size; off += mtd->erasesize) { int s = nand_get_lock_status(mtd, off); /* print message only if status has changed */ if (s != last_status && off != 0) { print_status(block_start, off, mtd->erasesize, last_status); block_start = off; } last_status = s; } /* Print the last block info */ print_status(block_start, off, mtd->erasesize, last_status); } #endif #ifdef CONFIG_ENV_OFFSET_OOB unsigned long nand_env_oob_offset; int do_nand_env_oob(struct cmd_tbl *cmdtp, int argc, char *const argv[]) { int ret; uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)]; struct mtd_info *mtd = get_nand_dev_by_index(0); char *cmd = argv[1]; if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !mtd) { puts("no devices available\n"); return 1; } set_dev(0); if (!strcmp(cmd, "get")) { ret = get_nand_env_oob(mtd, &nand_env_oob_offset); if (ret) return 1; printf("0x%08lx\n", nand_env_oob_offset); } else if (!strcmp(cmd, "set")) { loff_t addr; loff_t maxsize; struct mtd_oob_ops ops; int idx = 0; if (argc < 3) goto usage; mtd = get_nand_dev_by_index(idx); /* We don't care about size, or maxsize. */ if (mtd_arg_off(argv[2], &idx, &addr, &maxsize, &maxsize, MTD_DEV_TYPE_NAND, mtd->size)) { puts("Offset or partition name expected\n"); return 1; } if (set_dev(idx)) { puts("Offset or partition name expected\n"); return 1; } if (idx != 0) { puts("Partition not on first NAND device\n"); return 1; } if (mtd->oobavail < ENV_OFFSET_SIZE) { printf("Insufficient available OOB bytes:\n" "%d OOB bytes available but %d required for " "env.oob support\n", mtd->oobavail, ENV_OFFSET_SIZE); return 1; } if ((addr & (mtd->erasesize - 1)) != 0) { printf("Environment offset must be block-aligned\n"); return 1; } ops.datbuf = NULL; ops.mode = MTD_OOB_AUTO; ops.ooboffs = 0; ops.ooblen = ENV_OFFSET_SIZE; ops.oobbuf = (void *) oob_buf; oob_buf[0] = ENV_OOB_MARKER; oob_buf[1] = addr / mtd->erasesize; ret = mtd->write_oob(mtd, ENV_OFFSET_SIZE, &ops); if (ret) { printf("Error writing OOB block 0\n"); return ret; } ret = get_nand_env_oob(mtd, &nand_env_oob_offset); if (ret) { printf("Error reading env offset in OOB\n"); return ret; } if (addr != nand_env_oob_offset) { printf("Verification of env offset in OOB failed: " "0x%08llx expected but got 0x%08lx\n", (unsigned long long)addr, nand_env_oob_offset); return 1; } } else { goto usage; } return ret; usage: return CMD_RET_USAGE; } #endif static void nand_print_and_set_info(int idx) { struct mtd_info *mtd; struct nand_chip *chip; mtd = get_nand_dev_by_index(idx); if (!mtd) return; chip = mtd_to_nand(mtd); printf("Device %d: ", idx); if (chip->numchips > 1) printf("%dx ", chip->numchips); printf("%s, sector size %u KiB\n", mtd->name, mtd->erasesize >> 10); printf(" Page size %8d b\n", mtd->writesize); printf(" OOB size %8d b\n", mtd->oobsize); printf(" Erase size %8d b\n", mtd->erasesize); printf(" ecc strength %8d bits\n", mtd->ecc_strength); printf(" ecc step size %8d b\n", mtd->ecc_step_size); printf(" subpagesize %8d b\n", chip->subpagesize); printf(" options 0x%08x\n", chip->options); printf(" bbt options 0x%08x\n", chip->bbt_options); /* Set geometry info */ env_set_hex("nand_writesize", mtd->writesize); env_set_hex("nand_oobsize", mtd->oobsize); env_set_hex("nand_erasesize", mtd->erasesize); } static int raw_access(struct mtd_info *mtd, ulong addr, loff_t off, ulong count, int read, int no_verify) { int ret = 0; while (count--) { /* Raw access */ mtd_oob_ops_t ops = { .datbuf = (u8 *)addr, .oobbuf = ((u8 *)addr) + mtd->writesize, .len = mtd->writesize, .ooblen = mtd->oobsize, .mode = MTD_OPS_RAW }; if (read) { ret = mtd_read_oob(mtd, off, &ops); } else { ret = mtd_write_oob(mtd, off, &ops); if (!ret && !no_verify) ret = nand_verify_page_oob(mtd, &ops, off); } if (ret) { printf("%s: error at offset %llx, ret %d\n", __func__, (long long)off, ret); break; } addr += mtd->writesize + mtd->oobsize; off += mtd->writesize; } return ret; } /* Adjust a chip/partition size down for bad blocks so we don't * read/write past the end of a chip/partition by accident. */ static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev) { /* We grab the nand info object here fresh because this is usually * called after arg_off_size() which can change the value of dev. */ struct mtd_info *mtd = get_nand_dev_by_index(dev); loff_t maxoffset = offset + *size; int badblocks = 0; /* count badblocks in NAND from offset to offset + size */ for (; offset < maxoffset; offset += mtd->erasesize) { if (nand_block_isbad(mtd, offset)) badblocks++; } /* adjust size if any bad blocks found */ if (badblocks) { *size -= badblocks * mtd->erasesize; printf("size adjusted to 0x%llx (%d bad blocks)\n", (unsigned long long)*size, badblocks); } } static int do_nand(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { int i, ret = 0; ulong addr; loff_t off, size, maxsize; char *cmd, *s; struct mtd_info *mtd; #ifdef CONFIG_SYS_NAND_QUIET int quiet = CONFIG_SYS_NAND_QUIET; #else int quiet = 0; #endif const char *quiet_str = env_get("quiet"); int dev = nand_curr_device; int repeat = flag & CMD_FLAG_REPEAT; /* at least two arguments please */ if (argc < 2) goto usage; if (quiet_str) quiet = simple_strtoul(quiet_str, NULL, 0) != 0; cmd = argv[1]; /* Only "dump" is repeatable. */ if (repeat && strcmp(cmd, "dump")) return 0; if (strcmp(cmd, "info") == 0) { putc('\n'); for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) nand_print_and_set_info(i); return 0; } if (strcmp(cmd, "device") == 0) { if (argc < 3) { putc('\n'); if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE) puts("no devices available\n"); else nand_print_and_set_info(dev); return 0; } dev = (int)dectoul(argv[2], NULL); set_dev(dev); return 0; } #ifdef CONFIG_ENV_OFFSET_OOB /* this command operates only on the first nand device */ if (strcmp(cmd, "env.oob") == 0) return do_nand_env_oob(cmdtp, argc - 1, argv + 1); #endif /* The following commands operate on the current device, unless * overridden by a partition specifier. Note that if somehow the * current device is invalid, it will have to be changed to a valid * one before these commands can run, even if a partition specifier * for another device is to be used. */ mtd = get_nand_dev_by_index(dev); if (!mtd) { puts("\nno devices available\n"); return 1; } if (strcmp(cmd, "bad") == 0) { printf("\nDevice %d bad blocks:\n", dev); for (off = 0; off < mtd->size; off += mtd->erasesize) { ret = nand_block_isbad(mtd, off); if (ret) printf(" 0x%08llx%s\n", (unsigned long long)off, ret == 2 ? "\t (bbt reserved)" : ""); } return 0; } /* * Syntax is: * 0 1 2 3 4 * nand erase [clean] [off size] */ if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) { nand_erase_options_t opts; /* "clean" at index 2 means request to write cleanmarker */ int clean = argc > 2 && !strcmp("clean", argv[2]); int scrub_yes = argc > 2 && !strcmp("-y", argv[2]); int o = (clean || scrub_yes) ? 3 : 2; int scrub = !strncmp(cmd, "scrub", 5); int spread = 0; int args = 2; const char *scrub_warn = "Warning: " "scrub option will erase all factory set bad blocks!\n" " " "There is no reliable way to recover them.\n" " " "Use this command only for testing purposes if you\n" " " "are sure of what you are doing!\n" "\nReally scrub this NAND flash? \n"; if (cmd[5] != 0) { if (!strcmp(&cmd[5], ".spread")) { spread = 1; } else if (!strcmp(&cmd[5], ".part")) { args = 1; } else if (!strcmp(&cmd[5], ".chip")) { args = 0; } else { goto usage; } } /* * Don't allow missing arguments to cause full chip/partition * erases -- easy to do accidentally, e.g. with a misspelled * variable name. */ if (argc != o + args) goto usage; printf("\nNAND %s: ", cmd); /* skip first two or three arguments, look for offset and size */ if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size, &maxsize, MTD_DEV_TYPE_NAND, mtd->size) != 0) return 1; if (set_dev(dev)) return 1; mtd = get_nand_dev_by_index(dev); memset(&opts, 0, sizeof(opts)); opts.offset = off; opts.length = size; opts.jffs2 = clean; opts.quiet = quiet; opts.spread = spread; if (scrub) { if (scrub_yes) { opts.scrub = 1; } else { puts(scrub_warn); if (confirm_yesno()) { opts.scrub = 1; } else { puts("scrub aborted\n"); return 1; } } } ret = nand_erase_opts(mtd, &opts); printf("%s\n", ret ? "ERROR" : "OK"); return ret == 0 ? 0 : 1; } if (strncmp(cmd, "dump", 4) == 0) { if (argc < 3) goto usage; off = (int)hextoul(argv[2], NULL); ret = nand_dump(mtd, off, !strcmp(&cmd[4], ".oob"), repeat); return ret == 0 ? 1 : 0; } if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) { size_t rwsize; ulong pagecount = 1; int read; int raw = 0; int no_verify = 0; if (argc < 4) goto usage; addr = (ulong)hextoul(argv[2], NULL); read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */ printf("\nNAND %s: ", read ? "read" : "write"); s = strchr(cmd, '.'); if (s && !strncmp(s, ".raw", 4)) { raw = 1; if (!strcmp(s, ".raw.noverify")) no_verify = 1; if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize, MTD_DEV_TYPE_NAND, mtd->size)) return 1; if (set_dev(dev)) return 1; mtd = get_nand_dev_by_index(dev); if (argc > 4 && !str2long(argv[4], &pagecount)) { printf("'%s' is not a number\n", argv[4]); return 1; } if (pagecount * mtd->writesize > size) { puts("Size exceeds partition or device limit\n"); return -1; } rwsize = pagecount * (mtd->writesize + mtd->oobsize); } else { if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off, &size, &maxsize, MTD_DEV_TYPE_NAND, mtd->size) != 0) return 1; if (set_dev(dev)) return 1; /* size is unspecified */ if (argc < 5) adjust_size_for_badblocks(&size, off, dev); rwsize = size; } mtd = get_nand_dev_by_index(dev); if (!s || !strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i")) { if (read) ret = nand_read_skip_bad(mtd, off, &rwsize, NULL, maxsize, (u_char *)addr); else ret = nand_write_skip_bad(mtd, off, &rwsize, NULL, maxsize, (u_char *)addr, WITH_WR_VERIFY); #ifdef CONFIG_CMD_NAND_TRIMFFS } else if (!strcmp(s, ".trimffs")) { if (read) { printf("Unknown nand command suffix '%s'\n", s); return 1; } ret = nand_write_skip_bad(mtd, off, &rwsize, NULL, maxsize, (u_char *)addr, WITH_DROP_FFS | WITH_WR_VERIFY); #endif } else if (!strcmp(s, ".oob")) { /* out-of-band data */ mtd_oob_ops_t ops = { .oobbuf = (u8 *)addr, .ooblen = rwsize, .mode = MTD_OPS_RAW }; if (read) ret = mtd_read_oob(mtd, off, &ops); else ret = mtd_write_oob(mtd, off, &ops); } else if (raw) { ret = raw_access(mtd, addr, off, pagecount, read, no_verify); } else { printf("Unknown nand command suffix '%s'.\n", s); return 1; } printf(" %zu bytes %s: %s\n", rwsize, read ? "read" : "written", ret ? "ERROR" : "OK"); return ret == 0 ? 0 : 1; } #ifdef CONFIG_CMD_NAND_TORTURE if (strcmp(cmd, "torture") == 0) { loff_t endoff; unsigned int failed = 0, passed = 0; if (argc < 3) goto usage; if (!str2off(argv[2], &off)) { puts("Offset is not a valid number\n"); return 1; } size = mtd->erasesize; if (argc > 3) { if (!str2off(argv[3], &size)) { puts("Size is not a valid number\n"); return 1; } } endoff = off + size; if (endoff > mtd->size) { puts("Arguments beyond end of NAND\n"); return 1; } off = round_down(off, mtd->erasesize); endoff = round_up(endoff, mtd->erasesize); size = endoff - off; printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n", dev, off, size, mtd->erasesize); while (off < endoff) { ret = nand_torture(mtd, off); if (ret) { failed++; printf(" block at 0x%llx failed\n", off); } else { passed++; } off += mtd->erasesize; } printf(" Passed: %u, failed: %u\n", passed, failed); return failed != 0; } #endif if (strcmp(cmd, "markbad") == 0) { argc -= 2; argv += 2; if (argc <= 0) goto usage; while (argc > 0) { addr = hextoul(*argv, NULL); if (mtd_block_markbad(mtd, addr)) { printf("block 0x%08lx NOT marked " "as bad! ERROR %d\n", addr, ret); ret = 1; } else { printf("block 0x%08lx successfully " "marked as bad\n", addr); } --argc; ++argv; } return ret; } if (strcmp(cmd, "biterr") == 0) { int bit; if (argc != 4) goto usage; off = (int)simple_strtoul(argv[2], NULL, 16); bit = (int)simple_strtoul(argv[3], NULL, 10); ret = nand_biterror(mtd, off, bit); return ret; } #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK if (strcmp(cmd, "lock") == 0) { int tight = 0; int status = 0; if (argc == 3) { if (!strcmp("tight", argv[2])) tight = 1; if (!strcmp("status", argv[2])) status = 1; } if (status) { do_nand_status(mtd); } else { if (!nand_lock(mtd, tight)) { puts("NAND flash successfully locked\n"); } else { puts("Error locking NAND flash\n"); return 1; } } return 0; } if (strncmp(cmd, "unlock", 5) == 0) { int allexcept = 0; s = strchr(cmd, '.'); if (s && !strcmp(s, ".allexcept")) allexcept = 1; if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size, &maxsize, MTD_DEV_TYPE_NAND, mtd->size) < 0) return 1; if (set_dev(dev)) return 1; mtd = get_nand_dev_by_index(dev); if (!nand_unlock(mtd, off, size, allexcept)) { puts("NAND flash successfully unlocked\n"); } else { puts("Error unlocking NAND flash, " "write and erase will probably fail\n"); return 1; } return 0; } #endif usage: return CMD_RET_USAGE; } U_BOOT_LONGHELP(nand, "info - show available NAND devices\n" "nand device [dev] - show or set current device\n" "nand read - addr off|partition size\n" "nand write - addr off|partition size\n" " read/write 'size' bytes starting at offset 'off'\n" " to/from memory address 'addr', skipping bad blocks.\n" "nand read.raw - addr off|partition [count]\n" "nand write.raw[.noverify] - addr off|partition [count]\n" " Use read.raw/write.raw to avoid ECC and access the flash as-is.\n" #ifdef CONFIG_CMD_NAND_TRIMFFS "nand write.trimffs - addr off|partition size\n" " write 'size' bytes starting at offset 'off' from memory address\n" " 'addr', skipping bad blocks and dropping any pages at the end\n" " of eraseblocks that contain only 0xFF\n" #endif "nand erase[.spread] [clean] off size - erase 'size' bytes " "from offset 'off'\n" " With '.spread', erase enough for given file size, otherwise,\n" " 'size' includes skipped bad blocks.\n" "nand erase.part [clean] partition - erase entire mtd partition'\n" "nand erase.chip [clean] - erase entire chip'\n" "nand bad - show bad blocks\n" "nand dump[.oob] off - dump page\n" #ifdef CONFIG_CMD_NAND_TORTURE "nand torture off - torture one block at offset\n" "nand torture off [size] - torture blocks from off to off+size\n" #endif "nand scrub [-y] off size | scrub.part partition | scrub.chip\n" " really clean NAND erasing bad blocks (UNSAFE)\n" "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n" "nand biterr off bit - make a bit error at offset and bit position (UNSAFE)" #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK "\n" "nand lock [tight] [status]\n" " bring nand to lock state or display locked pages\n" "nand unlock[.allexcept] [offset] [size] - unlock section" #endif #ifdef CONFIG_ENV_OFFSET_OOB "\n" "nand env.oob - environment offset in OOB of block 0 of" " first device.\n" "nand env.oob set off|partition - set enviromnent offset\n" "nand env.oob get - get environment offset" #endif ); U_BOOT_CMD( nand, CONFIG_SYS_MAXARGS, 1, do_nand, "NAND sub-system", nand_help_text ); static int nand_load_image(struct cmd_tbl *cmdtp, struct mtd_info *mtd, ulong offset, ulong addr, char *cmd) { int r; char *s; size_t cnt; #if defined(CONFIG_LEGACY_IMAGE_FORMAT) struct legacy_img_hdr *hdr; #endif #if defined(CONFIG_FIT) const void *fit_hdr = NULL; #endif s = strchr(cmd, '.'); if (s != NULL && (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) { printf("Unknown nand load suffix '%s'\n", s); bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX); return 1; } printf("\nLoading from %s, offset 0x%lx\n", mtd->name, offset); cnt = mtd->writesize; r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size, (u_char *)addr); if (r) { puts("** Read error\n"); bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ); return 1; } bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ); switch (genimg_get_format ((void *)addr)) { #if defined(CONFIG_LEGACY_IMAGE_FORMAT) case IMAGE_FORMAT_LEGACY: hdr = (struct legacy_img_hdr *)addr; bootstage_mark(BOOTSTAGE_ID_NAND_TYPE); image_print_contents (hdr); cnt = image_get_image_size (hdr); break; #endif #if defined(CONFIG_FIT) case IMAGE_FORMAT_FIT: fit_hdr = (const void *)addr; puts ("Fit image detected...\n"); cnt = fit_get_size (fit_hdr); break; #endif default: bootstage_error(BOOTSTAGE_ID_NAND_TYPE); puts ("** Unknown image type\n"); return 1; } bootstage_mark(BOOTSTAGE_ID_NAND_TYPE); r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size, (u_char *)addr); if (r) { puts("** Read error\n"); bootstage_error(BOOTSTAGE_ID_NAND_READ); return 1; } bootstage_mark(BOOTSTAGE_ID_NAND_READ); #if defined(CONFIG_FIT) /* This cannot be done earlier, we need complete FIT image in RAM first */ if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) { if (fit_check_format(fit_hdr, IMAGE_SIZE_INVAL)) { bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ); puts ("** Bad FIT image format\n"); return 1; } bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK); fit_print_contents (fit_hdr); } #endif /* Loading ok, update default load address */ image_load_addr = addr; return bootm_maybe_autostart(cmdtp, cmd); } static int do_nandboot(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { char *boot_device = NULL; int idx; ulong addr, offset = 0; struct mtd_info *mtd; #if defined(CONFIG_CMD_MTDPARTS) struct mtd_device *dev; struct part_info *part; u8 pnum; if (argc >= 2) { char *p = (argc == 2) ? argv[1] : argv[2]; if (!(str2long(p, &addr)) && (mtdparts_init() == 0) && (find_dev_and_part(p, &dev, &pnum, &part) == 0)) { if (dev->id->type != MTD_DEV_TYPE_NAND) { puts("Not a NAND device\n"); return 1; } if (argc > 3) goto usage; if (argc == 3) addr = hextoul(argv[1], NULL); else addr = CONFIG_SYS_LOAD_ADDR; mtd = get_nand_dev_by_index(dev->id->num); return nand_load_image(cmdtp, mtd, part->offset, addr, argv[0]); } } #endif bootstage_mark(BOOTSTAGE_ID_NAND_PART); switch (argc) { case 1: addr = CONFIG_SYS_LOAD_ADDR; boot_device = env_get("bootdevice"); break; case 2: addr = hextoul(argv[1], NULL); boot_device = env_get("bootdevice"); break; case 3: addr = hextoul(argv[1], NULL); boot_device = argv[2]; break; case 4: addr = hextoul(argv[1], NULL); boot_device = argv[2]; offset = hextoul(argv[3], NULL); break; default: #if defined(CONFIG_CMD_MTDPARTS) usage: #endif bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX); return CMD_RET_USAGE; } bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX); if (!boot_device) { puts("\n** No boot device **\n"); bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE); return 1; } bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE); idx = hextoul(boot_device, NULL); mtd = get_nand_dev_by_index(idx); if (!mtd) { printf("\n** Device %d not available\n", idx); bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE); return 1; } bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE); return nand_load_image(cmdtp, mtd, offset, addr, argv[0]); } U_BOOT_CMD(nboot, 4, 1, do_nandboot, "boot from NAND device", "[partition] | [[[loadAddr] dev] offset]" );