d3a337a592
* updated SNAND/SNFI driver brings support for MT7981 * add support for MediaTek NAND Memory bad Block Management (NMBM) (not used for any boards atm, but could be useful in future) * wire up NMBM support for MT7622, MT7629, MT7981 and MT7986 * replace some local patches with updated version from SDK * bring some legacy precompiler symbols which haven't been converted into Kconfig symbols in U-Boot 2022.07, remove when bumbping to U-Boot 2022.10: 100-28-include-configs-mt7986-h-from-SDK.patch Source: https://github.com/mtk-openwrt/u-boot Signed-off-by: Daniel Golle <daniel@makrotopia.org>
81 lines
2.3 KiB
Diff
81 lines
2.3 KiB
Diff
From 6dbbc8affb6ab22f940d13d0e928d5e881127ca4 Mon Sep 17 00:00:00 2001
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From: Weijie Gao <weijie.gao@mediatek.com>
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Date: Mon, 25 Jul 2022 11:22:57 +0800
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Subject: [PATCH 44/71] cmd: mtd: add markbad subcommand for NMBM testing
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This patch adds:
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* Mark bad block on lower mtd device and erase on upper mtd
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device, which will trigger remapping:
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$ mtd markbad spi-nand0 0x20000 (mark block1 as bad)
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$ mtd erase nmbm0 0x20000 0x20000 (let nmbm detect the bad block and remap it)
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* Clear bad block mark through:
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$ mtd erase.dontskipbad spi-nand0 0x20000 0x20000
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(After cleaning bad block mark, we need to rebuild nmbm manage table.)
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Signed-off-by: SkyLake.Huang <skylake.huang@mediatek.com>
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---
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cmd/mtd.c | 39 +++++++++++++++++++++++++++++++++++++++
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1 file changed, 39 insertions(+)
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--- a/cmd/mtd.c
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+++ b/cmd/mtd.c
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@@ -492,6 +492,42 @@ out_put_mtd:
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return CMD_RET_SUCCESS;
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}
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+static int do_mtd_markbad(struct cmd_tbl *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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+ loff_t off;
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+ int ret;
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+
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+ if (argc < 3)
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+ return CMD_RET_USAGE;
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+
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+ mtd = get_mtd_by_name(argv[1]);
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+ if (IS_ERR(mtd) || !mtd)
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+ return CMD_RET_FAILURE;
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+
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+ if (!mtd_can_have_bb(mtd)) {
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+ printf("Only NAND-based devices can have mark blocks\n");
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+ goto out_put_mtd;
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+ }
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+
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+ off = simple_strtoull(argv[2], NULL, 0);
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+
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+ ret = mtd_block_markbad(mtd, off);
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+ if (!ret) {
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+ printf("MTD device %s block at 0x%08llx marked bad\n",
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+ mtd->name, off);
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+ } else {
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+ printf("MTD device %s block at 0x%08llx mark bad failed\n",
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+ mtd->name, off);
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+ }
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+
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+out_put_mtd:
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+ put_mtd_device(mtd);
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+
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+ return CMD_RET_SUCCESS;
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+}
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+
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#ifdef CONFIG_AUTO_COMPLETE
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static int mtd_name_complete(int argc, char *const argv[], char last_char,
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int maxv, char *cmdv[])
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@@ -540,6 +576,7 @@ static char mtd_help_text[] =
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"\n"
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"Specific functions:\n"
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"mtd bad <name>\n"
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+ "mtd markbad <name> <off>\n"
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"\n"
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"With:\n"
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"\t<name>: NAND partition/chip name (or corresponding DM device name or OF path)\n"
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@@ -565,4 +602,6 @@ U_BOOT_CMD_WITH_SUBCMDS(mtd, "MTD utils"
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U_BOOT_SUBCMD_MKENT_COMPLETE(erase, 4, 0, do_mtd_erase,
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mtd_name_complete),
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U_BOOT_SUBCMD_MKENT_COMPLETE(bad, 2, 1, do_mtd_bad,
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+ mtd_name_complete),
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+ U_BOOT_SUBCMD_MKENT_COMPLETE(markbad, 3, 1, do_mtd_markbad,
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mtd_name_complete));
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