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From 6dbbc8affb6ab22f940d13d0e928d5e881127ca4 Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Mon, 25 Jul 2022 11:22:57 +0800
Subject: [PATCH 44/71] cmd: mtd: add markbad subcommand for NMBM testing
This patch adds:
* Mark bad block on lower mtd device and erase on upper mtd
device, which will trigger remapping:
$ mtd markbad spi-nand0 0x20000 (mark block1 as bad)
$ mtd erase nmbm0 0x20000 0x20000 (let nmbm detect the bad block and remap it)
* Clear bad block mark through:
$ mtd erase.dontskipbad spi-nand0 0x20000 0x20000
(After cleaning bad block mark, we need to rebuild nmbm manage table.)
Signed-off-by: SkyLake.Huang <skylake.huang@mediatek.com>
---
cmd/mtd.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
--- a/cmd/mtd.c
+++ b/cmd/mtd.c
@@ -504,6 +504,42 @@ out_put_mtd:
return CMD_RET_SUCCESS;
}
+static int do_mtd_markbad(struct cmd_tbl *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ struct mtd_info *mtd;
+ loff_t off;
+ int ret;
+
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ mtd = get_mtd_by_name(argv[1]);
+ if (IS_ERR(mtd) || !mtd)
+ return CMD_RET_FAILURE;
+
+ if (!mtd_can_have_bb(mtd)) {
+ printf("Only NAND-based devices can have mark blocks\n");
+ goto out_put_mtd;
+ }
+
+ off = simple_strtoull(argv[2], NULL, 0);
+
+ ret = mtd_block_markbad(mtd, off);
+ if (!ret) {
+ printf("MTD device %s block at 0x%08llx marked bad\n",
+ mtd->name, off);
+ } else {
+ printf("MTD device %s block at 0x%08llx mark bad failed\n",
+ mtd->name, 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[])
@@ -552,6 +588,7 @@ static char mtd_help_text[] =
"\n"
"Specific functions:\n"
"mtd bad <name>\n"
+ "mtd markbad <name> <off>\n"
"\n"
"With:\n"
"\t<name>: NAND partition/chip name (or corresponding DM device name or OF path)\n"
@@ -577,4 +614,6 @@ U_BOOT_CMD_WITH_SUBCMDS(mtd, "MTD utils"
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),
+ U_BOOT_SUBCMD_MKENT_COMPLETE(markbad, 3, 1, do_mtd_markbad,
mtd_name_complete));
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