nand: Add torture feature
This patch adds a NAND Flash torture feature, which is useful as a block stress
test to determine if a block is still good and reliable (or should be marked as
bad), e.g. after a write error.
This code is ported from mtd-utils' lib/libmtd.c.
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Scott Wood <scottwood@freescale.com>
[scottwood@freescale.com: removed unnec. ifdef and unwrapped error strings]
Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index 4b16069..1568594 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -700,6 +700,25 @@
return ret == 0 ? 0 : 1;
}
+#ifdef CONFIG_CMD_NAND_TORTURE
+ if (strcmp(cmd, "torture") == 0) {
+ if (argc < 3)
+ goto usage;
+
+ if (!str2off(argv[2], &off)) {
+ puts("Offset is not a valid number\n");
+ return 1;
+ }
+
+ printf("\nNAND torture: device %d offset 0x%llx size 0x%x\n",
+ dev, off, nand->erasesize);
+ ret = nand_torture(nand, off);
+ printf(" %s\n", ret ? "Failed" : "Passed");
+
+ return ret == 0 ? 0 : 1;
+ }
+#endif
+
if (strcmp(cmd, "markbad") == 0) {
argc -= 2;
argv += 2;
@@ -810,6 +829,9 @@
"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 block at offset\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"