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-rw-r--r--nanddump.c47
1 files changed, 44 insertions, 3 deletions
diff --git a/nanddump.c b/nanddump.c
index a942f27..a010387 100644
--- a/nanddump.c
+++ b/nanddump.c
@@ -33,6 +33,10 @@
#define PROGRAM "nanddump"
#define VERSION "$Revision: 1.29 $"
+struct nand_oobinfo none_oobinfo = {
+ .useecc = MTD_NANDECC_OFF,
+};
+
void display_help (void)
{
printf("Usage: nanddump [OPTIONS] MTD-device\n"
@@ -43,6 +47,7 @@ void display_help (void)
"-f file --file=file dump to file\n"
"-i --ignoreerrors ignore errors\n"
"-l length --length=length length\n"
+ "-n --noecc read without error correction\n"
"-o --omitoob omit oob data\n"
"-b --omitbad omit bad blocks from the dump\n"
"-p --prettyprint print nice (hexdump)\n"
@@ -67,6 +72,7 @@ void display_version (void)
int ignoreerrors; // ignore errors
int pretty_print; // print nice in ascii
+int noecc; // don't error correct
int omitoob; // omit oob data
unsigned long start_addr; // start address
unsigned long length; // dump length
@@ -80,7 +86,7 @@ void process_options (int argc, char *argv[])
for (;;) {
int option_index = 0;
- static const char *short_options = "bs:f:il:op";
+ static const char *short_options = "bs:f:il:opn";
static const struct option long_options[] = {
{"help", no_argument, 0, 0},
{"version", no_argument, 0, 0},
@@ -90,6 +96,7 @@ void process_options (int argc, char *argv[])
{"omitbad", no_argument, 0, 'b'},
{"startaddress", required_argument, 0, 's'},
{"length", required_argument, 0, 'l'},
+ {"noecc", no_argument, 0, 'n'},
{0, 0, 0, 0},
};
@@ -114,7 +121,7 @@ void process_options (int argc, char *argv[])
omitbad = 1;
break;
case 's':
- start_addr = atol(optarg);
+ start_addr = strtol(optarg, NULL, 0);
break;
case 'f':
if (!(dumpfile = strdup(optarg))) {
@@ -126,7 +133,7 @@ void process_options (int argc, char *argv[])
ignoreerrors = 1;
break;
case 'l':
- length = atol(optarg);
+ length = strtol(optarg, NULL, 0);
break;
case 'o':
omitoob = 1;
@@ -134,6 +141,9 @@ void process_options (int argc, char *argv[])
case 'p':
pretty_print = 1;
break;
+ case 'n':
+ noecc = 1;
+ break;
case '?':
error = 1;
break;
@@ -163,6 +173,8 @@ int main(int argc, char **argv)
struct mtd_oob_buf oob = {0, 16, oobbuf};
mtd_info_t meminfo;
char pretty_buf[80];
+ int oobinfochanged = 0 ;
+ struct nand_oobinfo old_oobinfo ;
process_options(argc, argv);
@@ -190,6 +202,21 @@ int main(int argc, char **argv)
/* Read the real oob length */
oob.length = meminfo.oobsize;
+ if (noecc) {
+ if (ioctl (fd, MEMGETOOBSEL, &old_oobinfo) != 0) {
+ perror ("MEMGETOOBSEL");
+ close (fd);
+ exit (1);
+ }
+ if (ioctl (fd, MEMSETOOBSEL, &none_oobinfo) != 0) {
+ perror ("MEMSETOOBSEL");
+ close (fd);
+ exit (1);
+ }
+ oobinfochanged = 1 ;
+ }
+
+
/* Open output file for writing. If file name is "-", write to standard output. */
if (!dumpfile) {
ofd = STDOUT_FILENO;
@@ -297,6 +324,15 @@ int main(int argc, char **argv)
write(ofd, oobbuf, meminfo.oobsize);
}
+ /* reset oobinfo */
+ if (oobinfochanged) {
+ if (ioctl (fd, MEMSETOOBSEL, &old_oobinfo) != 0) {
+ perror ("MEMSETOOBSEL");
+ close(fd);
+ close(ofd);
+ return 1;
+ }
+ }
/* Close the output file and MTD device */
close(fd);
close(ofd);
@@ -305,6 +341,11 @@ int main(int argc, char **argv)
return 0;
closeall:
+ if (oobinfochanged) {
+ if (ioctl (fd, MEMSETOOBSEL, &old_oobinfo) != 0) {
+ perror ("MEMSETOOBSEL");
+ }
+ }
close(fd);
close(ofd);
exit(1);