diff options
Diffstat (limited to 'cmd/cmd_onenand.c')
-rw-r--r-- | cmd/cmd_onenand.c | 595 |
1 files changed, 595 insertions, 0 deletions
diff --git a/cmd/cmd_onenand.c b/cmd/cmd_onenand.c new file mode 100644 index 00000000000..feab01a71e3 --- /dev/null +++ b/cmd/cmd_onenand.c @@ -0,0 +1,595 @@ +/* + * U-Boot command for OneNAND support + * + * Copyright (C) 2005-2008 Samsung Electronics + * Kyungmin Park <kyungmin.park@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <common.h> +#include <command.h> +#include <malloc.h> + +#include <linux/compat.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/onenand.h> + +#include <asm/io.h> + +static struct mtd_info *mtd; + +static loff_t next_ofs; +static loff_t skip_ofs; + +static int arg_off_size_onenand(int argc, char * const argv[], ulong *off, + size_t *size) +{ + if (argc >= 1) { + if (!(str2long(argv[0], off))) { + printf("'%s' is not a number\n", argv[0]); + return -1; + } + } else { + *off = 0; + } + + if (argc >= 2) { + if (!(str2long(argv[1], (ulong *)size))) { + printf("'%s' is not a number\n", argv[1]); + return -1; + } + } else { + *size = mtd->size - *off; + } + + if ((*off + *size) > mtd->size) { + printf("total chip size (0x%llx) exceeded!\n", mtd->size); + return -1; + } + + if (*size == mtd->size) + puts("whole chip\n"); + else + printf("offset 0x%lx, size 0x%x\n", *off, *size); + + return 0; +} + +static int onenand_block_read(loff_t from, size_t len, + size_t *retlen, u_char *buf, int oob) +{ + struct onenand_chip *this = mtd->priv; + int blocks = (int) len >> this->erase_shift; + int blocksize = (1 << this->erase_shift); + loff_t ofs = from; + struct mtd_oob_ops ops = { + .retlen = 0, + }; + int ret; + + if (oob) + ops.ooblen = blocksize; + else + ops.len = blocksize; + + while (blocks) { + ret = mtd_block_isbad(mtd, ofs); + if (ret) { + printk("Bad blocks %d at 0x%x\n", + (u32)(ofs >> this->erase_shift), (u32)ofs); + ofs += blocksize; + continue; + } + + if (oob) + ops.oobbuf = buf; + else + ops.datbuf = buf; + + ops.retlen = 0; + ret = mtd_read_oob(mtd, ofs, &ops); + if (ret) { + printk("Read failed 0x%x, %d\n", (u32)ofs, ret); + ofs += blocksize; + continue; + } + ofs += blocksize; + buf += blocksize; + blocks--; + *retlen += ops.retlen; + } + + return 0; +} + +static int onenand_write_oneblock_withoob(loff_t to, const u_char * buf, + size_t *retlen) +{ + struct mtd_oob_ops ops = { + .len = mtd->writesize, + .ooblen = mtd->oobsize, + .mode = MTD_OPS_AUTO_OOB, + }; + int page, ret = 0; + for (page = 0; page < (mtd->erasesize / mtd->writesize); page ++) { + ops.datbuf = (u_char *)buf; + buf += mtd->writesize; + ops.oobbuf = (u_char *)buf; + buf += mtd->oobsize; + ret = mtd_write_oob(mtd, to, &ops); + if (ret) + break; + to += mtd->writesize; + } + + *retlen = (ret) ? 0 : mtd->erasesize; + return ret; +} + +static int onenand_block_write(loff_t to, size_t len, + size_t *retlen, const u_char * buf, int withoob) +{ + struct onenand_chip *this = mtd->priv; + int blocks = len >> this->erase_shift; + int blocksize = (1 << this->erase_shift); + loff_t ofs; + size_t _retlen = 0; + int ret; + + if (to == next_ofs) { + next_ofs = to + len; + to += skip_ofs; + } else { + next_ofs = to + len; + skip_ofs = 0; + } + ofs = to; + + while (blocks) { + ret = mtd_block_isbad(mtd, ofs); + if (ret) { + printk("Bad blocks %d at 0x%x\n", + (u32)(ofs >> this->erase_shift), (u32)ofs); + skip_ofs += blocksize; + goto next; + } + + if (!withoob) + ret = mtd_write(mtd, ofs, blocksize, &_retlen, buf); + else + ret = onenand_write_oneblock_withoob(ofs, buf, &_retlen); + if (ret) { + printk("Write failed 0x%x, %d", (u32)ofs, ret); + skip_ofs += blocksize; + goto next; + } + + buf += blocksize; + blocks--; + *retlen += _retlen; +next: + ofs += blocksize; + } + + return 0; +} + +static int onenand_block_erase(u32 start, u32 size, int force) +{ + struct onenand_chip *this = mtd->priv; + struct erase_info instr = { + .callback = NULL, + }; + loff_t ofs; + int ret; + int blocksize = 1 << this->erase_shift; + + for (ofs = start; ofs < (start + size); ofs += blocksize) { + ret = mtd_block_isbad(mtd, ofs); + if (ret && !force) { + printf("Skip erase bad block %d at 0x%x\n", + (u32)(ofs >> this->erase_shift), (u32)ofs); + continue; + } + + instr.addr = ofs; + instr.len = blocksize; + instr.priv = force; + instr.mtd = mtd; + ret = mtd_erase(mtd, &instr); + if (ret) { + printf("erase failed block %d at 0x%x\n", + (u32)(ofs >> this->erase_shift), (u32)ofs); + continue; + } + } + + return 0; +} + +static int onenand_block_test(u32 start, u32 size) +{ + struct onenand_chip *this = mtd->priv; + struct erase_info instr = { + .callback = NULL, + .priv = 0, + }; + + int blocks; + loff_t ofs; + int blocksize = 1 << this->erase_shift; + int start_block, end_block; + size_t retlen; + u_char *buf; + u_char *verify_buf; + int ret; + + buf = malloc(blocksize); + if (!buf) { + printf("Not enough malloc space available!\n"); + return -1; + } + + verify_buf = malloc(blocksize); + if (!verify_buf) { + printf("Not enough malloc space available!\n"); + return -1; + } + + start_block = start >> this->erase_shift; + end_block = (start + size) >> this->erase_shift; + + /* Protect boot-loader from badblock testing */ + if (start_block < 2) + start_block = 2; + + if (end_block > (mtd->size >> this->erase_shift)) + end_block = mtd->size >> this->erase_shift; + + blocks = start_block; + ofs = start; + while (blocks < end_block) { + printf("\rTesting block %d at 0x%x", (u32)(ofs >> this->erase_shift), (u32)ofs); + + ret = mtd_block_isbad(mtd, ofs); + if (ret) { + printf("Skip erase bad block %d at 0x%x\n", + (u32)(ofs >> this->erase_shift), (u32)ofs); + goto next; + } + + instr.addr = ofs; + instr.len = blocksize; + ret = mtd_erase(mtd, &instr); + if (ret) { + printk("Erase failed 0x%x, %d\n", (u32)ofs, ret); + goto next; + } + + ret = mtd_write(mtd, ofs, blocksize, &retlen, buf); + if (ret) { + printk("Write failed 0x%x, %d\n", (u32)ofs, ret); + goto next; + } + + ret = mtd_read(mtd, ofs, blocksize, &retlen, verify_buf); + if (ret) { + printk("Read failed 0x%x, %d\n", (u32)ofs, ret); + goto next; + } + + if (memcmp(buf, verify_buf, blocksize)) + printk("\nRead/Write test failed at 0x%x\n", (u32)ofs); + +next: + ofs += blocksize; + blocks++; + } + printf("...Done\n"); + + free(buf); + free(verify_buf); + + return 0; +} + +static int onenand_dump(struct mtd_info *mtd, ulong off, int only_oob) +{ + int i; + u_char *datbuf, *oobbuf, *p; + struct mtd_oob_ops ops; + loff_t addr; + + datbuf = malloc(mtd->writesize + mtd->oobsize); + oobbuf = malloc(mtd->oobsize); + if (!datbuf || !oobbuf) { + puts("No memory for page buffer\n"); + return 1; + } + off &= ~(mtd->writesize - 1); + addr = (loff_t) off; + memset(&ops, 0, sizeof(ops)); + ops.datbuf = datbuf; + ops.oobbuf = oobbuf; + ops.len = mtd->writesize; + ops.ooblen = mtd->oobsize; + ops.retlen = 0; + i = mtd_read_oob(mtd, addr, &ops); + if (i < 0) { + printf("Error (%d) reading page %08lx\n", i, off); + free(datbuf); + free(oobbuf); + return 1; + } + printf("Page %08lx dump:\n", off); + i = mtd->writesize >> 4; + p = datbuf; + + while (i--) { + if (!only_oob) + 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(datbuf); + free(oobbuf); + + return 0; +} + +static int do_onenand_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + printf("%s\n", mtd->name); + return 0; +} + +static int do_onenand_bad(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + ulong ofs; + + mtd = &onenand_mtd; + /* Currently only one OneNAND device is supported */ + printf("\nDevice %d bad blocks:\n", 0); + for (ofs = 0; ofs < mtd->size; ofs += mtd->erasesize) { + if (mtd_block_isbad(mtd, ofs)) + printf(" %08x\n", (u32)ofs); + } + + return 0; +} + +static int do_onenand_read(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + char *s; + int oob = 0; + ulong addr, ofs; + size_t len; + int ret = 0; + size_t retlen = 0; + + if (argc < 3) + return CMD_RET_USAGE; + + s = strchr(argv[0], '.'); + if ((s != NULL) && (!strcmp(s, ".oob"))) + oob = 1; + + addr = (ulong)simple_strtoul(argv[1], NULL, 16); + + printf("\nOneNAND read: "); + if (arg_off_size_onenand(argc - 2, argv + 2, &ofs, &len) != 0) + return 1; + + ret = onenand_block_read(ofs, len, &retlen, (u8 *)addr, oob); + + printf(" %d bytes read: %s\n", retlen, ret ? "ERROR" : "OK"); + + return ret == 0 ? 0 : 1; +} + +static int do_onenand_write(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + ulong addr, ofs; + size_t len; + int ret = 0, withoob = 0; + size_t retlen = 0; + + if (argc < 3) + return CMD_RET_USAGE; + + if (strncmp(argv[0] + 6, "yaffs", 5) == 0) + withoob = 1; + + addr = (ulong)simple_strtoul(argv[1], NULL, 16); + + printf("\nOneNAND write: "); + if (arg_off_size_onenand(argc - 2, argv + 2, &ofs, &len) != 0) + return 1; + + ret = onenand_block_write(ofs, len, &retlen, (u8 *)addr, withoob); + + printf(" %d bytes written: %s\n", retlen, ret ? "ERROR" : "OK"); + + return ret == 0 ? 0 : 1; +} + +static int do_onenand_erase(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + ulong ofs; + int ret = 0; + size_t len; + int force; + + /* + * Syntax is: + * 0 1 2 3 4 + * onenand erase [force] [off size] + */ + argc--; + argv++; + if (argc) + { + if (!strcmp("force", argv[0])) + { + force = 1; + argc--; + argv++; + } + } + printf("\nOneNAND erase: "); + + /* skip first two or three arguments, look for offset and size */ + if (arg_off_size_onenand(argc, argv, &ofs, &len) != 0) + return 1; + + ret = onenand_block_erase(ofs, len, force); + + printf("%s\n", ret ? "ERROR" : "OK"); + + return ret == 0 ? 0 : 1; +} + +static int do_onenand_test(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + ulong ofs; + int ret = 0; + size_t len; + + /* + * Syntax is: + * 0 1 2 3 4 + * onenand test [force] [off size] + */ + + printf("\nOneNAND test: "); + + /* skip first two or three arguments, look for offset and size */ + if (arg_off_size_onenand(argc - 1, argv + 1, &ofs, &len) != 0) + return 1; + + ret = onenand_block_test(ofs, len); + + printf("%s\n", ret ? "ERROR" : "OK"); + + return ret == 0 ? 0 : 1; +} + +static int do_onenand_dump(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + ulong ofs; + int ret = 0; + char *s; + + if (argc < 2) + return CMD_RET_USAGE; + + s = strchr(argv[0], '.'); + ofs = (int)simple_strtoul(argv[1], NULL, 16); + + if (s != NULL && strcmp(s, ".oob") == 0) + ret = onenand_dump(mtd, ofs, 1); + else + ret = onenand_dump(mtd, ofs, 0); + + return ret == 0 ? 1 : 0; +} + +static int do_onenand_markbad(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + int ret = 0; + ulong addr; + + argc -= 2; + argv += 2; + + if (argc <= 0) + return CMD_RET_USAGE; + + while (argc > 0) { + addr = simple_strtoul(*argv, NULL, 16); + + 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; +} + +static cmd_tbl_t cmd_onenand_sub[] = { + U_BOOT_CMD_MKENT(info, 1, 0, do_onenand_info, "", ""), + U_BOOT_CMD_MKENT(bad, 1, 0, do_onenand_bad, "", ""), + U_BOOT_CMD_MKENT(read, 4, 0, do_onenand_read, "", ""), + U_BOOT_CMD_MKENT(write, 4, 0, do_onenand_write, "", ""), + U_BOOT_CMD_MKENT(write.yaffs, 4, 0, do_onenand_write, "", ""), + U_BOOT_CMD_MKENT(erase, 3, 0, do_onenand_erase, "", ""), + U_BOOT_CMD_MKENT(test, 3, 0, do_onenand_test, "", ""), + U_BOOT_CMD_MKENT(dump, 2, 0, do_onenand_dump, "", ""), + U_BOOT_CMD_MKENT(markbad, CONFIG_SYS_MAXARGS, 0, do_onenand_markbad, "", ""), +}; + +#ifdef CONFIG_NEEDS_MANUAL_RELOC +void onenand_reloc(void) { + fixup_cmdtable(cmd_onenand_sub, ARRAY_SIZE(cmd_onenand_sub)); +} +#endif + +static int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) +{ + cmd_tbl_t *c; + + if (argc < 2) + return CMD_RET_USAGE; + + mtd = &onenand_mtd; + + /* Strip off leading 'onenand' command argument */ + argc--; + argv++; + + c = find_cmd_tbl(argv[0], &cmd_onenand_sub[0], ARRAY_SIZE(cmd_onenand_sub)); + + if (c) + return c->cmd(cmdtp, flag, argc, argv); + else + return CMD_RET_USAGE; +} + +U_BOOT_CMD( + onenand, CONFIG_SYS_MAXARGS, 1, do_onenand, + "OneNAND sub-system", + "info - show available OneNAND devices\n" + "onenand bad - show bad blocks\n" + "onenand read[.oob] addr off size\n" + "onenand write[.yaffs] addr off size\n" + " read/write 'size' bytes starting at offset 'off'\n" + " to/from memory address 'addr', skipping bad blocks.\n" + "onenand erase [force] [off size] - erase 'size' bytes from\n" + "onenand test [off size] - test 'size' bytes from\n" + " offset 'off' (entire device if not specified)\n" + "onenand dump[.oob] off - dump page\n" + "onenand markbad off [...] - mark bad block(s) at offset (UNSAFE)" +); |