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-rw-r--r--cmd/onenand.c595
1 files changed, 595 insertions, 0 deletions
diff --git a/cmd/onenand.c b/cmd/onenand.c
new file mode 100644
index 0000000..feab01a
--- /dev/null
+++ b/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)"
+);
generated by cgit v1.1 at 2024-11-22 10:47:07 +0000