X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;ds=sidebyside;f=common%2Fcmd_nand.c;h=e24ed7f9c4a9afa50d29f914e689ab1518d95dc8;hb=961c437b6cd68375d66c1f0cac9ade63115c0750;hp=0fd3a6c414aa9c35f13a8ec1a9bd60d4614634df;hpb=48680493092b72f084b60757889fae3d7ee62058;p=u-boot diff --git a/common/cmd_nand.c b/common/cmd_nand.c index 0fd3a6c414..e24ed7f9c4 100644 --- a/common/cmd_nand.c +++ b/common/cmd_nand.c @@ -11,7 +11,7 @@ * Added 16-bit nand support * (C) 2004 Texas Instruments * - * Copyright 2010 Freescale Semiconductor + * 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 @@ -48,8 +48,8 @@ static int nand_dump(nand_info_t *nand, ulong off, int only_oob, int repeat) last = off; - datbuf = malloc(nand->writesize); - oobbuf = malloc(nand->oobsize); + datbuf = memalign(ARCH_DMA_MINALIGN, nand->writesize); + oobbuf = memalign(ARCH_DMA_MINALIGN, nand->oobsize); if (!datbuf || !oobbuf) { puts("No memory for page buffer\n"); return 1; @@ -231,12 +231,18 @@ print: #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_LOCK) ? "LOCK " : ""), + (!(status & NAND_LOCK_STATUS_UNLOCK) ? "LOCK " : ""), ((status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : "")); } @@ -390,6 +396,39 @@ static void nand_print_and_set_info(int idx) setenv("nand_erasesize", buf); } +static int raw_access(nand_info_t *nand, ulong addr, loff_t off, ulong count, + int read) +{ + int ret = 0; + + while (count--) { + /* Raw access */ + mtd_oob_ops_t ops = { + .datbuf = (u8 *)addr, + .oobbuf = ((u8 *)addr) + nand->writesize, + .len = nand->writesize, + .ooblen = nand->oobsize, + .mode = MTD_OOB_RAW + }; + + if (read) + ret = nand->read_oob(nand, off, &ops); + else + ret = nand->write_oob(nand, off, &ops); + + if (ret) { + printf("%s: error at offset %llx, ret %d\n", + __func__, (long long)off, ret); + break; + } + + addr += nand->writesize + nand->oobsize; + off += nand->writesize; + } + + return ret; +} + int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) { int i, ret = 0; @@ -568,7 +607,9 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) { size_t rwsize; + ulong pagecount = 1; int read; + int raw; if (argc < 4) goto usage; @@ -577,13 +618,36 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */ printf("\nNAND %s: ", read ? "read" : "write"); - if (arg_off_size(argc - 3, argv + 3, &dev, &off, &size) != 0) - return 1; nand = &nand_info[dev]; - rwsize = size; s = strchr(cmd, '.'); + + if (s && !strcmp(s, ".raw")) { + raw = 1; + + if (arg_off(argv[3], &dev, &off, &size)) + return 1; + + if (argc > 4 && !str2long(argv[4], &pagecount)) { + printf("'%s' is not a number\n", argv[4]); + return 1; + } + + if (pagecount * nand->writesize > size) { + puts("Size exceeds partition or device limit\n"); + return -1; + } + + rwsize = pagecount * (nand->writesize + nand->oobsize); + } else { + if (arg_off_size(argc - 3, argv + 3, &dev, + &off, &size) != 0) + return 1; + + rwsize = size; + } + if (!s || !strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i")) { if (read) @@ -609,7 +673,8 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) return 1; } ret = nand_write_skip_bad(nand, off, &rwsize, - (u_char *)addr, WITH_YAFFS_OOB); + (u_char *)addr, + WITH_INLINE_OOB); #endif } else if (!strcmp(s, ".oob")) { /* out-of-band data */ @@ -623,22 +688,8 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) ret = nand->read_oob(nand, off, &ops); else ret = nand->write_oob(nand, off, &ops); - } else if (!strcmp(s, ".raw")) { - /* Raw access */ - mtd_oob_ops_t ops = { - .datbuf = (u8 *)addr, - .oobbuf = ((u8 *)addr) + nand->writesize, - .len = nand->writesize, - .ooblen = nand->oobsize, - .mode = MTD_OOB_RAW - }; - - rwsize = nand->writesize + nand->oobsize; - - if (read) - ret = nand->read_oob(nand, off, &ops); - else - ret = nand->write_oob(nand, off, &ops); + } else if (raw) { + ret = raw_access(nand, addr, off, pagecount, read); } else { printf("Unknown nand command suffix '%s'.\n", s); return 1; @@ -704,11 +755,18 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) return 0; } - if (strcmp(cmd, "unlock") == 0) { + if (strncmp(cmd, "unlock", 5) == 0) { + int allexcept = 0; + + s = strchr(cmd, '.'); + + if (s && !strcmp(s, ".allexcept")) + allexcept = 1; + if (arg_off_size(argc - 2, argv + 2, &dev, &off, &size) < 0) return 1; - if (!nand_unlock(&nand_info[dev], off, size)) { + if (!nand_unlock(&nand_info[dev], off, size, allexcept)) { puts("NAND flash successfully unlocked\n"); } else { puts("Error unlocking NAND flash, " @@ -732,9 +790,9 @@ U_BOOT_CMD( "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\n" - "nand write.raw - addr off|partition\n" - " Use read.raw/write.raw to avoid ECC and access the page as-is.\n" + "nand read.raw - addr off|partition [count]\n" + "nand write.raw - 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" @@ -762,7 +820,7 @@ U_BOOT_CMD( "\n" "nand lock [tight] [status]\n" " bring nand to lock state or display locked pages\n" - "nand unlock [offset] [size] - unlock section" + "nand unlock[.allexcept] [offset] [size] - unlock section" #endif #ifdef CONFIG_ENV_OFFSET_OOB "\n"