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-rw-r--r--include/libmtd.h15
-rw-r--r--lib/libmtd.c26
-rw-r--r--misc-utils/flash_erase.c95
3 files changed, 106 insertions, 30 deletions
diff --git a/include/libmtd.h b/include/libmtd.h
index cc24af8..6ab0de5 100644
--- a/include/libmtd.h
+++ b/include/libmtd.h
@@ -1,5 +1,6 @@
/*
* Copyright (C) 2008, 2009 Nokia Corporation
+ * Copyright 2021 NXP
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -175,6 +176,20 @@ int mtd_lock(const struct mtd_dev_info *mtd, int fd, int eb);
int mtd_unlock(const struct mtd_dev_info *mtd, int fd, int eb);
/**
+ * mtd_unlock_multi - unlock eraseblocks.
+ * @desc: MTD library descriptor
+ * @mtd: MTD device description object
+ * @fd: MTD device node file descriptor
+ * @eb: index of first eraseblock to unlock
+ * @blocks: the number of eraseblocks to unlock
+ *
+ * This function unlocks @blocks starting at eraseblock @eb.
+ * Returns %0 in case of success and %-1 in case of failure.
+ */
+int mtd_unlock_multi(const struct mtd_dev_info *mtd, int fd, int eb,
+ int blocks);
+
+/**
* mtd_erase - erase multiple eraseblocks.
* @desc: MTD library descriptor
* @mtd: MTD device description object
diff --git a/lib/libmtd.c b/lib/libmtd.c
index b581d80..a363e56 100644
--- a/lib/libmtd.c
+++ b/lib/libmtd.c
@@ -1,6 +1,7 @@
/*
* Copyright (c) International Business Machines Corp., 2006
* Copyright (C) 2009 Nokia Corporation
+ * Copyright 2021 NXP
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -834,8 +835,8 @@ static int mtd_valid_erase_block(const struct mtd_dev_info *mtd, int eb)
return 0;
}
-static int mtd_xlock(const struct mtd_dev_info *mtd, int fd, int eb, int req,
- const char *sreq)
+static int mtd_xlock(const struct mtd_dev_info *mtd, int fd, int eb,
+ int blocks, int req, const char *sreq)
{
int ret;
struct erase_info_user ei;
@@ -844,8 +845,14 @@ static int mtd_xlock(const struct mtd_dev_info *mtd, int fd, int eb, int req,
if (ret)
return ret;
+ if (blocks > 1) {
+ ret = mtd_valid_erase_block(mtd, eb + blocks - 1);
+ if (ret)
+ return ret;
+ }
+
ei.start = eb * mtd->eb_size;
- ei.length = mtd->eb_size;
+ ei.length = mtd->eb_size * blocks;
ret = ioctl(fd, req, &ei);
if (ret < 0)
@@ -853,16 +860,23 @@ static int mtd_xlock(const struct mtd_dev_info *mtd, int fd, int eb, int req,
return 0;
}
-#define mtd_xlock(mtd, fd, eb, req) mtd_xlock(mtd, fd, eb, req, #req)
+#define mtd_xlock(mtd, fd, eb, blocks, req) \
+ mtd_xlock(mtd, fd, eb, blocks, req, #req)
int mtd_lock(const struct mtd_dev_info *mtd, int fd, int eb)
{
- return mtd_xlock(mtd, fd, eb, MEMLOCK);
+ return mtd_xlock(mtd, fd, eb, 1, MEMLOCK);
}
int mtd_unlock(const struct mtd_dev_info *mtd, int fd, int eb)
{
- return mtd_xlock(mtd, fd, eb, MEMUNLOCK);
+ return mtd_xlock(mtd, fd, eb, 1, MEMUNLOCK);
+}
+
+int mtd_unlock_multi(const struct mtd_dev_info *mtd, int fd, int eb,
+ int blocks)
+{
+ return mtd_xlock(mtd, fd, eb, blocks, MEMUNLOCK);
}
int mtd_erase_multi(libmtd_t desc, const struct mtd_dev_info *mtd,
diff --git a/misc-utils/flash_erase.c b/misc-utils/flash_erase.c
index a7fc6a6..49a880f 100644
--- a/misc-utils/flash_erase.c
+++ b/misc-utils/flash_erase.c
@@ -2,6 +2,7 @@
Copyright (C) 2000 Arcom Control System Ltd
Copyright (C) 2010 Mike Frysinger <vapier@gentoo.org>
+ Copyright 2021 NXP
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -50,11 +51,10 @@ static int unlock; /* unlock sectors before erasing */
static struct jffs2_unknown_node cleanmarker;
int target_endian = __BYTE_ORDER;
-static void show_progress(struct mtd_dev_info *mtd, off_t start, int eb,
- int eb_start, int eb_cnt)
+static void show_progress(off_t start, int eb, int eb_start, int eb_cnt, int step)
{
bareverbose(!quiet, "\rErasing %d Kibyte @ %llx -- %2i %% complete ",
- mtd->eb_size / 1024, (unsigned long long)start, ((eb - eb_start) * 100) / eb_cnt);
+ step / 1024, (unsigned long long)start, ((eb - eb_start) * 100) / eb_cnt);
fflush(stdout);
}
@@ -88,6 +88,27 @@ static void display_version (void)
PROGRAM_NAME);
}
+static void clear_marker(libmtd_t mtd_desc, struct mtd_dev_info *mtd, int fd,
+ unsigned int eb, int cmlen, bool isNAND)
+{
+ off_t offset = (off_t)eb * mtd->eb_size;
+
+ /* write cleanmarker */
+ if (isNAND) {
+ if (mtd_write(mtd_desc, mtd, fd, eb, 0, NULL, 0, &cleanmarker, cmlen,
+ MTD_OPS_AUTO_OOB) != 0) {
+ sys_errmsg("%s: MTD writeoob failure", mtd_device);
+ return;
+ }
+ } else {
+ if (pwrite(fd, &cleanmarker, sizeof(cleanmarker), (loff_t)offset) != sizeof(cleanmarker)) {
+ sys_errmsg("%s: MTD write failure", mtd_device);
+ return;
+ }
+ }
+ verbose(!quiet, "%llx : Cleanmarker Updated.", (unsigned long long)offset);
+}
+
int main(int argc, char *argv[])
{
libmtd_t mtd_desc;
@@ -95,7 +116,7 @@ int main(int argc, char *argv[])
int fd, cmlen = 8;
unsigned long long start;
unsigned int eb, eb_start, eb_cnt;
- bool isNAND;
+ bool isNAND, erase_chip = false;
int error = 0;
off_t offset = 0;
@@ -205,6 +226,47 @@ int main(int argc, char *argv[])
if (eb_cnt == 0)
eb_cnt = (mtd.size / mtd.eb_size) - eb_start;
+ if (eb_start == 0 && mtd.size == eb_cnt * mtd.eb_size)
+ erase_chip = true;
+
+ /* If MTD device may have bad eraseblocks,
+ * erase one by one each sector
+ */
+ if (noskipbad && mtd.bb_allowed)
+ erase_chip = false;
+
+ if (erase_chip) {
+ show_progress(0, eb_start, eb_start, eb_cnt, mtd.size);
+
+ if (unlock) {
+ if (mtd_unlock_multi(&mtd, fd, eb_start, eb_cnt) != 0) {
+ sys_errmsg("%s: MTD unlock entire chip failure." \
+ "Trying one by one each sector.",
+ mtd_device);
+ goto erase_each_sector;
+ }
+ }
+
+ if (mtd_erase_multi(mtd_desc, &mtd, fd, eb_start, eb_cnt) != 0) {
+ sys_errmsg("%s: MTD Erase entire chip failure" \
+ "Trying one by one each sector.",
+ mtd_device);
+ goto erase_each_sector;
+ }
+
+ show_progress(0, eb_start + eb_cnt, eb_start,
+ eb_cnt, mtd.size);
+
+ if (!jffs2)
+ goto out;
+
+ /* write cleanmarker */
+ for (eb = eb_start; eb < eb_start + eb_cnt; eb++)
+ clear_marker(mtd_desc, &mtd, fd, eb, cmlen, isNAND);
+ goto out;
+ }
+
+erase_each_sector:
for (eb = eb_start; eb < eb_start + eb_cnt; eb++) {
offset = (off_t)eb * mtd.eb_size;
@@ -223,7 +285,7 @@ int main(int argc, char *argv[])
}
}
- show_progress(&mtd, offset, eb, eb_start, eb_cnt);
+ show_progress(offset, eb, eb_start, eb_cnt, mtd.eb_size);
if (unlock) {
if (mtd_unlock(&mtd, fd, eb) != 0) {
@@ -237,26 +299,11 @@ int main(int argc, char *argv[])
continue;
}
- /* format for JFFS2 ? */
- if (!jffs2)
- continue;
-
- /* write cleanmarker */
- if (isNAND) {
- if (mtd_write(mtd_desc, &mtd, fd, eb, 0, NULL, 0, &cleanmarker, cmlen,
- MTD_OPS_AUTO_OOB) != 0) {
- sys_errmsg("%s: MTD writeoob failure", mtd_device);
- continue;
- }
- } else {
- if (pwrite(fd, &cleanmarker, sizeof(cleanmarker), (loff_t)offset) != sizeof(cleanmarker)) {
- sys_errmsg("%s: MTD write failure", mtd_device);
- continue;
- }
- }
- verbose(!quiet, " Cleanmarker Updated.");
+ if (jffs2)
+ clear_marker(mtd_desc, &mtd, fd, eb, cmlen, isNAND);
}
- show_progress(&mtd, offset, eb, eb_start, eb_cnt);
+ show_progress(offset, eb, eb_start, eb_cnt, mtd.eb_size);
+out:
bareverbose(!quiet, "\n");
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 05:32:15 +0000