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@@ -15,6 +15,22 @@
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#include <mapmem.h>
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#include <mtd.h>
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+#include <linux/ctype.h>
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+
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+static struct mtd_info *get_mtd_by_name(const char *name)
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+{
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+ struct mtd_info *mtd;
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+
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+ mtd_probe_devices();
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+
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+ mtd = get_mtd_device_nm(name);
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+ if (IS_ERR_OR_NULL(mtd))
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+ printf("MTD device %s not found, ret %ld\n", name,
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+ PTR_ERR(mtd));
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+
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+ return mtd;
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+}
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+
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static uint mtd_len_to_pages(struct mtd_info *mtd, u64 len)
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{
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do_div(len, mtd->writesize);
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@@ -177,7 +193,8 @@ static bool mtd_oob_write_is_empty(struct mtd_oob_ops *op)
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return true;
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}
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-static int do_mtd_list(void)
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+static int do_mtd_list(cmd_tbl_t *cmdtp, int flag, int argc,
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+ char * const argv[])
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{
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struct mtd_info *mtd;
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int dev_nb = 0;
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@@ -221,229 +238,287 @@ static int mtd_special_write_oob(struct mtd_info *mtd, u64 off,
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return ret;
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}
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-static int do_mtd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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+static int do_mtd_io(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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+ bool dump, read, raw, woob, write_empty_pages, has_pages = false;
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+ u64 start_off, off, len, remaining, default_len;
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+ struct mtd_oob_ops io_op = {};
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+ uint user_addr = 0, npages;
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+ const char *cmd = argv[0];
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struct mtd_info *mtd;
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- const char *cmd;
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- char *mtd_name;
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+ u32 oob_len;
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+ u8 *buf;
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+ int ret;
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- /* All MTD commands need at least two arguments */
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if (argc < 2)
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return CMD_RET_USAGE;
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- /* Parse the command name and its optional suffixes */
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- cmd = argv[1];
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+ mtd = get_mtd_by_name(argv[1]);
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+ if (IS_ERR_OR_NULL(mtd))
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+ return CMD_RET_FAILURE;
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- /* List the MTD devices if that is what the user wants */
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- if (strcmp(cmd, "list") == 0)
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- return do_mtd_list();
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+ if (mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH)
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+ has_pages = true;
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- /*
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- * The remaining commands require also at least a device ID.
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- * Check the selected device is valid. Ensure it is probed.
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- */
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- if (argc < 3)
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- return CMD_RET_USAGE;
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+ dump = !strncmp(cmd, "dump", 4);
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+ read = dump || !strncmp(cmd, "read", 4);
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+ raw = strstr(cmd, ".raw");
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+ woob = strstr(cmd, ".oob");
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+ write_empty_pages = !has_pages || strstr(cmd, ".dontskipff");
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- mtd_name = argv[2];
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- mtd_probe_devices();
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- mtd = get_mtd_device_nm(mtd_name);
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- if (IS_ERR_OR_NULL(mtd)) {
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- printf("MTD device %s not found, ret %ld\n",
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- mtd_name, PTR_ERR(mtd));
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- return CMD_RET_FAILURE;
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- }
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- put_mtd_device(mtd);
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+ argc -= 2;
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+ argv += 2;
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- argc -= 3;
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- argv += 3;
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-
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- /* Do the parsing */
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- if (!strncmp(cmd, "read", 4) || !strncmp(cmd, "dump", 4) ||
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- !strncmp(cmd, "write", 5)) {
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- bool has_pages = mtd->type == MTD_NANDFLASH ||
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- mtd->type == MTD_MLCNANDFLASH;
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- bool dump, read, raw, woob, write_empty_pages;
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- struct mtd_oob_ops io_op = {};
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- uint user_addr = 0, npages;
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- u64 start_off, off, len, remaining, default_len;
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- u32 oob_len;
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- u8 *buf;
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- int ret;
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-
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- dump = !strncmp(cmd, "dump", 4);
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- read = dump || !strncmp(cmd, "read", 4);
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- raw = strstr(cmd, ".raw");
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- woob = strstr(cmd, ".oob");
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- write_empty_pages = !has_pages || strstr(cmd, ".dontskipff");
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-
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- if (!dump) {
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- if (!argc)
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- return CMD_RET_USAGE;
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-
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- user_addr = simple_strtoul(argv[0], NULL, 16);
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- argc--;
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- argv++;
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+ if (!dump) {
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+ if (!argc) {
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+ ret = CMD_RET_USAGE;
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+ goto out_put_mtd;
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}
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- start_off = argc > 0 ? simple_strtoul(argv[0], NULL, 16) : 0;
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- if (!mtd_is_aligned_with_min_io_size(mtd, start_off)) {
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- printf("Offset not aligned with a page (0x%x)\n",
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- mtd->writesize);
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- return CMD_RET_FAILURE;
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- }
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+ user_addr = simple_strtoul(argv[0], NULL, 16);
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+ argc--;
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+ argv++;
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+ }
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- default_len = dump ? mtd->writesize : mtd->size;
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- len = argc > 1 ? simple_strtoul(argv[1], NULL, 16) :
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- default_len;
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- if (!mtd_is_aligned_with_min_io_size(mtd, len)) {
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- len = round_up(len, mtd->writesize);
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- printf("Size not on a page boundary (0x%x), rounding to 0x%llx\n",
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- mtd->writesize, len);
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- }
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+ start_off = argc > 0 ? simple_strtoul(argv[0], NULL, 16) : 0;
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+ if (!mtd_is_aligned_with_min_io_size(mtd, start_off)) {
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+ printf("Offset not aligned with a page (0x%x)\n",
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+ mtd->writesize);
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+ ret = CMD_RET_FAILURE;
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+ goto out_put_mtd;
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+ }
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- remaining = len;
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- npages = mtd_len_to_pages(mtd, len);
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- oob_len = woob ? npages * mtd->oobsize : 0;
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+ default_len = dump ? mtd->writesize : mtd->size;
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+ len = argc > 1 ? simple_strtoul(argv[1], NULL, 16) : default_len;
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+ if (!mtd_is_aligned_with_min_io_size(mtd, len)) {
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+ len = round_up(len, mtd->writesize);
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+ printf("Size not on a page boundary (0x%x), rounding to 0x%llx\n",
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+ mtd->writesize, len);
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+ }
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- if (dump)
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- buf = kmalloc(len + oob_len, GFP_KERNEL);
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- else
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- buf = map_sysmem(user_addr, 0);
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+ remaining = len;
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+ npages = mtd_len_to_pages(mtd, len);
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+ oob_len = woob ? npages * mtd->oobsize : 0;
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- if (!buf) {
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- printf("Could not map/allocate the user buffer\n");
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- return CMD_RET_FAILURE;
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+ if (dump)
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+ buf = kmalloc(len + oob_len, GFP_KERNEL);
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+ else
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+ buf = map_sysmem(user_addr, 0);
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+
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+ if (!buf) {
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+ printf("Could not map/allocate the user buffer\n");
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+ ret = CMD_RET_FAILURE;
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+ goto out_put_mtd;
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+ }
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+
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+ if (has_pages)
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+ printf("%s %lld byte(s) (%d page(s)) at offset 0x%08llx%s%s%s\n",
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+ read ? "Reading" : "Writing", len, npages, start_off,
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+ raw ? " [raw]" : "", woob ? " [oob]" : "",
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+ !read && write_empty_pages ? " [dontskipff]" : "");
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+ else
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+ printf("%s %lld byte(s) at offset 0x%08llx\n",
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+ read ? "Reading" : "Writing", len, start_off);
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+
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+ io_op.mode = raw ? MTD_OPS_RAW : MTD_OPS_AUTO_OOB;
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+ io_op.len = has_pages ? mtd->writesize : len;
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+ io_op.ooblen = woob ? mtd->oobsize : 0;
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+ io_op.datbuf = buf;
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+ io_op.oobbuf = woob ? &buf[len] : NULL;
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+
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+ /* Search for the first good block after the given offset */
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+ off = start_off;
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+ while (mtd_block_isbad(mtd, off))
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+ off += mtd->erasesize;
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+
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+ /* Loop over the pages to do the actual read/write */
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+ while (remaining) {
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+ /* Skip the block if it is bad */
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+ if (mtd_is_aligned_with_block_size(mtd, off) &&
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+ mtd_block_isbad(mtd, off)) {
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+ off += mtd->erasesize;
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+ continue;
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}
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- if (has_pages)
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- printf("%s %lld byte(s) (%d page(s)) at offset 0x%08llx%s%s%s\n",
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- read ? "Reading" : "Writing", len, npages, start_off,
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- raw ? " [raw]" : "", woob ? " [oob]" : "",
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- !read && write_empty_pages ? " [dontskipff]" : "");
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+ if (read)
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+ ret = mtd_read_oob(mtd, off, &io_op);
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else
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- printf("%s %lld byte(s) at offset 0x%08llx\n",
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- read ? "Reading" : "Writing", len, start_off);
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-
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- io_op.mode = raw ? MTD_OPS_RAW : MTD_OPS_AUTO_OOB;
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- io_op.len = has_pages ? mtd->writesize : len;
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- io_op.ooblen = woob ? mtd->oobsize : 0;
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- io_op.datbuf = buf;
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- io_op.oobbuf = woob ? &buf[len] : NULL;
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-
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- /* Search for the first good block after the given offset */
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- off = start_off;
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- while (mtd_block_isbad(mtd, off))
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- off += mtd->erasesize;
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+ ret = mtd_special_write_oob(mtd, off, &io_op,
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+ write_empty_pages, woob);
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- /* Loop over the pages to do the actual read/write */
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- while (remaining) {
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- /* Skip the block if it is bad */
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- if (mtd_is_aligned_with_block_size(mtd, off) &&
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- mtd_block_isbad(mtd, off)) {
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- off += mtd->erasesize;
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- continue;
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- }
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+ if (ret) {
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+ printf("Failure while %s at offset 0x%llx\n",
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+ read ? "reading" : "writing", off);
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+ break;
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+ }
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- if (read)
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- ret = mtd_read_oob(mtd, off, &io_op);
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- else
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- ret = mtd_special_write_oob(mtd, off, &io_op,
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- write_empty_pages,
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- woob);
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-
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- if (ret) {
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- printf("Failure while %s at offset 0x%llx\n",
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- read ? "reading" : "writing", off);
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- return CMD_RET_FAILURE;
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- }
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+ off += io_op.retlen;
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+ remaining -= io_op.retlen;
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+ io_op.datbuf += io_op.retlen;
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+ io_op.oobbuf += io_op.oobretlen;
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+ }
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- off += io_op.retlen;
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- remaining -= io_op.retlen;
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- io_op.datbuf += io_op.retlen;
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- io_op.oobbuf += io_op.oobretlen;
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- }
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+ if (!ret && dump)
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+ mtd_dump_device_buf(mtd, start_off, buf, len, woob);
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- if (!ret && dump)
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- mtd_dump_device_buf(mtd, start_off, buf, len, woob);
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+ if (dump)
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+ kfree(buf);
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+ else
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+ unmap_sysmem(buf);
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- if (dump)
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- kfree(buf);
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- else
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- unmap_sysmem(buf);
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+ if (ret) {
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+ printf("%s on %s failed with error %d\n",
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+ read ? "Read" : "Write", mtd->name, ret);
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+ ret = CMD_RET_FAILURE;
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+ } else {
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+ ret = CMD_RET_SUCCESS;
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+ }
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- if (ret) {
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- printf("%s on %s failed with error %d\n",
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- read ? "Read" : "Write", mtd->name, ret);
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- return CMD_RET_FAILURE;
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- }
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+out_put_mtd:
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+ put_mtd_device(mtd);
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- } else if (!strcmp(cmd, "erase")) {
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- bool scrub = strstr(cmd, ".dontskipbad");
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- struct erase_info erase_op = {};
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- u64 off, len;
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- int ret;
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+ return ret;
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+}
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- off = argc > 0 ? simple_strtoul(argv[0], NULL, 16) : 0;
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- len = argc > 1 ? simple_strtoul(argv[1], NULL, 16) : mtd->size;
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+static int do_mtd_erase(cmd_tbl_t *cmdtp, int flag, int argc,
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+ char * const argv[])
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+{
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+ struct erase_info erase_op = {};
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+ struct mtd_info *mtd;
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+ u64 off, len;
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+ bool scrub;
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+ int ret;
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- if (!mtd_is_aligned_with_block_size(mtd, off)) {
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- printf("Offset not aligned with a block (0x%x)\n",
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- mtd->erasesize);
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- return CMD_RET_FAILURE;
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- }
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+ if (argc < 2)
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+ return CMD_RET_USAGE;
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- if (!mtd_is_aligned_with_block_size(mtd, len)) {
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- printf("Size not a multiple of a block (0x%x)\n",
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- mtd->erasesize);
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- return CMD_RET_FAILURE;
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- }
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+ mtd = get_mtd_by_name(argv[1]);
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+ if (IS_ERR_OR_NULL(mtd))
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+ return CMD_RET_FAILURE;
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- printf("Erasing 0x%08llx ... 0x%08llx (%d eraseblock(s))\n",
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- off, off + len - 1, mtd_div_by_eb(len, mtd));
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+ scrub = strstr(argv[0], ".dontskipbad");
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- erase_op.mtd = mtd;
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- erase_op.addr = off;
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- erase_op.len = len;
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- erase_op.scrub = scrub;
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+ argc -= 2;
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+ argv += 2;
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- while (erase_op.len) {
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- ret = mtd_erase(mtd, &erase_op);
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+ off = argc > 0 ? simple_strtoul(argv[0], NULL, 16) : 0;
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+ len = argc > 1 ? simple_strtoul(argv[1], NULL, 16) : mtd->size;
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- /* Abort if its not a bad block error */
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- if (ret != -EIO)
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- break;
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+ if (!mtd_is_aligned_with_block_size(mtd, off)) {
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+ printf("Offset not aligned with a block (0x%x)\n",
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+ mtd->erasesize);
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+ ret = CMD_RET_FAILURE;
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+ goto out_put_mtd;
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+ }
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- printf("Skipping bad block at 0x%08llx\n",
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- erase_op.fail_addr);
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+ if (!mtd_is_aligned_with_block_size(mtd, len)) {
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+ printf("Size not a multiple of a block (0x%x)\n",
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+ mtd->erasesize);
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+ ret = CMD_RET_FAILURE;
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+ goto out_put_mtd;
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+ }
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- /* Skip bad block and continue behind it */
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- erase_op.len -= erase_op.fail_addr - erase_op.addr;
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- erase_op.len -= mtd->erasesize;
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- erase_op.addr = erase_op.fail_addr + mtd->erasesize;
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- }
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+ printf("Erasing 0x%08llx ... 0x%08llx (%d eraseblock(s))\n",
|
|
|
+ off, off + len - 1, mtd_div_by_eb(len, mtd));
|
|
|
|
|
|
- if (ret && ret != -EIO)
|
|
|
- return CMD_RET_FAILURE;
|
|
|
- } else if (!strcmp(cmd, "bad")) {
|
|
|
- loff_t off;
|
|
|
+ erase_op.mtd = mtd;
|
|
|
+ erase_op.addr = off;
|
|
|
+ erase_op.len = len;
|
|
|
+ erase_op.scrub = scrub;
|
|
|
|
|
|
- if (!mtd_can_have_bb(mtd)) {
|
|
|
- printf("Only NAND-based devices can have bad blocks\n");
|
|
|
- return CMD_RET_SUCCESS;
|
|
|
- }
|
|
|
+ while (erase_op.len) {
|
|
|
+ ret = mtd_erase(mtd, &erase_op);
|
|
|
|
|
|
- printf("MTD device %s bad blocks list:\n", mtd->name);
|
|
|
- for (off = 0; off < mtd->size; off += mtd->erasesize)
|
|
|
- if (mtd_block_isbad(mtd, off))
|
|
|
- printf("\t0x%08llx\n", off);
|
|
|
- } else {
|
|
|
+ /* Abort if its not a bad block error */
|
|
|
+ if (ret != -EIO)
|
|
|
+ break;
|
|
|
+
|
|
|
+ printf("Skipping bad block at 0x%08llx\n", erase_op.fail_addr);
|
|
|
+
|
|
|
+ /* Skip bad block and continue behind it */
|
|
|
+ erase_op.len -= erase_op.fail_addr - erase_op.addr;
|
|
|
+ erase_op.len -= mtd->erasesize;
|
|
|
+ erase_op.addr = erase_op.fail_addr + mtd->erasesize;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (ret && ret != -EIO)
|
|
|
+ ret = CMD_RET_FAILURE;
|
|
|
+ else
|
|
|
+ ret = CMD_RET_SUCCESS;
|
|
|
+
|
|
|
+out_put_mtd:
|
|
|
+ put_mtd_device(mtd);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int do_mtd_bad(cmd_tbl_t *cmdtp, int flag, int argc,
|
|
|
+ char * const argv[])
|
|
|
+{
|
|
|
+ struct mtd_info *mtd;
|
|
|
+ loff_t off;
|
|
|
+
|
|
|
+ if (argc < 2)
|
|
|
return CMD_RET_USAGE;
|
|
|
+
|
|
|
+ mtd = get_mtd_by_name(argv[1]);
|
|
|
+ if (IS_ERR_OR_NULL(mtd))
|
|
|
+ return CMD_RET_FAILURE;
|
|
|
+
|
|
|
+ if (!mtd_can_have_bb(mtd)) {
|
|
|
+ printf("Only NAND-based devices can have bad blocks\n");
|
|
|
+ goto out_put_mtd;
|
|
|
+ }
|
|
|
+
|
|
|
+ printf("MTD device %s bad blocks list:\n", mtd->name);
|
|
|
+ for (off = 0; off < mtd->size; off += mtd->erasesize) {
|
|
|
+ if (mtd_block_isbad(mtd, off))
|
|
|
+ printf("\t0x%08llx\n", off);
|
|
|
}
|
|
|
|
|
|
+out_put_mtd:
|
|
|
+ put_mtd_device(mtd);
|
|
|
+
|
|
|
return CMD_RET_SUCCESS;
|
|
|
}
|
|
|
|
|
|
+#ifdef CONFIG_AUTO_COMPLETE
|
|
|
+static int mtd_name_complete(int argc, char * const argv[], char last_char,
|
|
|
+ int maxv, char *cmdv[])
|
|
|
+{
|
|
|
+ int len = 0, n_found = 0;
|
|
|
+ struct mtd_info *mtd;
|
|
|
+
|
|
|
+ argc--;
|
|
|
+ argv++;
|
|
|
+
|
|
|
+ if (argc > 1 ||
|
|
|
+ (argc == 1 && (last_char == '\0' || isblank(last_char))))
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ if (argc)
|
|
|
+ len = strlen(argv[0]);
|
|
|
+
|
|
|
+ mtd_for_each_device(mtd) {
|
|
|
+ if (argc &&
|
|
|
+ (len > strlen(mtd->name) ||
|
|
|
+ strncmp(argv[0], mtd->name, len)))
|
|
|
+ continue;
|
|
|
+
|
|
|
+ if (n_found >= maxv - 2) {
|
|
|
+ cmdv[n_found++] = "...";
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ cmdv[n_found++] = mtd->name;
|
|
|
+ }
|
|
|
+
|
|
|
+ cmdv[n_found] = NULL;
|
|
|
+
|
|
|
+ return n_found;
|
|
|
+}
|
|
|
+#endif /* CONFIG_AUTO_COMPLETE */
|
|
|
+
|
|
|
static char mtd_help_text[] =
|
|
|
#ifdef CONFIG_SYS_LONGHELP
|
|
|
"- generic operations on memory technology devices\n\n"
|
|
@@ -470,4 +545,15 @@ static char mtd_help_text[] =
|
|
|
#endif
|
|
|
"";
|
|
|
|
|
|
-U_BOOT_CMD(mtd, 10, 1, do_mtd, "MTD utils", mtd_help_text);
|
|
|
+U_BOOT_CMD_WITH_SUBCMDS(mtd, "MTD utils", mtd_help_text,
|
|
|
+ U_BOOT_SUBCMD_MKENT(list, 1, 1, do_mtd_list),
|
|
|
+ U_BOOT_SUBCMD_MKENT_COMPLETE(read, 5, 0, do_mtd_io,
|
|
|
+ mtd_name_complete),
|
|
|
+ U_BOOT_SUBCMD_MKENT_COMPLETE(write, 5, 0, do_mtd_io,
|
|
|
+ mtd_name_complete),
|
|
|
+ U_BOOT_SUBCMD_MKENT_COMPLETE(dump, 4, 0, do_mtd_io,
|
|
|
+ mtd_name_complete),
|
|
|
+ U_BOOT_SUBCMD_MKENT_COMPLETE(erase, 4, 0, do_mtd_erase,
|
|
|
+ mtd_name_complete),
|
|
|
+ U_BOOT_SUBCMD_MKENT_COMPLETE(bad, 2, 1, do_mtd_bad,
|
|
|
+ mtd_name_complete));
|