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-rw-r--r--flash_erase.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/flash_erase.c b/flash_erase.c
index 1a7b52e..3ce701b 100644
--- a/flash_erase.c
+++ b/flash_erase.c
@@ -60,7 +60,7 @@ static void show_progress(struct mtd_dev_info *mtd, uint64_t start, int eb,
static void display_help (void)
{
- printf("Usage: %s [options] MTD_DEVICE <start block> <block count>\n"
+ printf("Usage: %s [options] MTD_DEVICE <start offset> <block count>\n"
"Erase blocks of the specified MTD device.\n"
"Specify a count of 0 to erase to end of device.\n"
"\n"
@@ -94,6 +94,7 @@ int main(int argc, char *argv[])
libmtd_t mtd_desc;
struct mtd_dev_info mtd;
int fd, clmpos = 0, clmlen = 8;
+ unsigned long long start;
unsigned int eb, eb_start, eb_cnt;
int isNAND;
int error = 0;
@@ -153,7 +154,7 @@ int main(int argc, char *argv[])
switch (argc - optind) {
case 3:
mtd_device = argv[optind];
- eb_start = simple_strtoul(argv[optind + 1], &error);
+ start = simple_strtoull(argv[optind + 1], &error);
eb_cnt = simple_strtoul(argv[optind + 2], &error);
break;
default:
@@ -182,6 +183,8 @@ int main(int argc, char *argv[])
if (mtd_get_dev_info(mtd_desc, mtd_device, &mtd) < 0)
return errmsg("mtd_get_dev_info failed");
+ eb_start = start / mtd.eb_size;
+
isNAND = mtd.type == MTD_NANDFLASH ? 1 : 0;
if (jffs2) {