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-rw-r--r--commands/nandtest.c125
1 files changed, 83 insertions, 42 deletions
diff --git a/commands/nandtest.c b/commands/nandtest.c
index 6d0b770..112bb01 100644
--- a/commands/nandtest.c
+++ b/commands/nandtest.c
@@ -67,6 +67,72 @@ static ssize_t __pwrite(int fd, const void *buf,
return ret;
}
+static int _read_get_stats(loff_t ofs, unsigned char *buf, loff_t totallength)
+{
+ int ret;
+
+ /* Read data from offset */
+ pread(fd, buf, meminfo.writesize, ofs);
+
+ ret = ioctl(fd, ECCGETSTATS, &newstats);
+ if (ret < 0) {
+ perror("\nECCGETSTATS");
+ return ret;
+ }
+
+ if (newstats.corrected > oldstats.corrected) {
+ printf("\n %d bit(s) ECC corrected at page 0x%08llx\n",
+ newstats.corrected - oldstats.corrected,
+ ofs + memregion.offset);
+ init_progression_bar(totallength);
+ show_progress(ofs);
+ if ((newstats.corrected-oldstats.corrected) >=
+ MAX_ECC_BITS) {
+ /* Increment ECC stats that
+ * are over MAX_ECC_BITS */
+ ecc_stats_over++;
+ } else {
+ /* Increment ECC stat value */
+ ecc_stats[(newstats.corrected -
+ oldstats.corrected) - 1]++;
+ }
+ /* Set oldstats to newstats */
+ oldstats.corrected = newstats.corrected;
+ }
+
+ if (newstats.failed > oldstats.failed) {
+ printf("\nECC failed at page 0x%08llx\n",
+ ofs + memregion.offset);
+ init_progression_bar(totallength);
+ show_progress(ofs);
+ oldstats.failed = newstats.failed;
+ ecc_failed_cnt++;
+ }
+
+ return 0;
+}
+
+/*
+ * Read and report correctec ECC bits.
+ * Param ofs: offset on flash_device.
+ * Param rbuf: pointer to allocated buffer to copy readed data.
+ * Param length: length of testing area
+ */
+static int read_corrected(loff_t ofs, unsigned char *rbuf, loff_t length)
+{
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < meminfo.erasesize;
+ i += meminfo.writesize) {
+ ret = _read_get_stats(ofs + i, rbuf + i, length);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
/*
* Erase and write function.
* Param ofs: offset on flash_device.
@@ -98,42 +164,9 @@ static int erase_and_write(loff_t ofs, unsigned char *data,
__pwrite(fd, data + i, meminfo.writesize,
ofs + i, length);
- /* Read data from offset */
- pread(fd, rbuf + i, meminfo.writesize, ofs + i);
-
- ret = ioctl(fd, ECCGETSTATS, &newstats);
- if (ret < 0) {
- perror("\nECCGETSTATS");
+ ret = _read_get_stats(ofs + i, rbuf + i, length);
+ if (ret)
return ret;
- }
-
- if (newstats.corrected > oldstats.corrected) {
- printf("\n %d bit(s) ECC corrected at page 0x%08llx\n",
- newstats.corrected - oldstats.corrected,
- ofs + memregion.offset + i);
- init_progression_bar(length);
- show_progress(ofs + i);
- if ((newstats.corrected-oldstats.corrected) >=
- MAX_ECC_BITS) {
- /* Increment ECC stats that
- * are over MAX_ECC_BITS */
- ecc_stats_over++;
- } else {
- /* Increment ECC stat value */
- ecc_stats[(newstats.corrected -
- oldstats.corrected) - 1]++;
- }
- /* Set oldstats to newstats */
- oldstats.corrected = newstats.corrected;
- }
- if (newstats.failed > oldstats.failed) {
- printf("\nECC failed at page 0x%08llx\n",
- ofs + memregion.offset + i);
- init_progression_bar(length);
- show_progress(ofs + i);
- oldstats.failed = newstats.failed;
- ecc_failed_cnt++;
- }
}
/* Compared written data with read data.
@@ -171,7 +204,7 @@ static void print_stats(int nr_passes, int length)
/* Main program. */
static int do_nandtest(int argc, char *argv[])
{
- int opt, do_nandtest_dev = -1, ret = -1;
+ int opt, do_nandtest_dev = -1, do_nandtest_ro = 0, ret = -1;
loff_t flash_offset = 0, test_ofs, length = 0;
unsigned int nr_iterations = 1, iter;
unsigned char *wbuf, *rbuf;
@@ -183,7 +216,7 @@ static int do_nandtest(int argc, char *argv[])
memset(ecc_stats, 0, sizeof(*ecc_stats));
- while ((opt = getopt(argc, argv, "ms:i:o:l:t")) > 0) {
+ while ((opt = getopt(argc, argv, "ms:i:o:l:tr")) > 0) {
switch (opt) {
case 'm':
markbad = 1;
@@ -203,6 +236,10 @@ static int do_nandtest(int argc, char *argv[])
case 't':
do_nandtest_dev = 1;
break;
+ case 'r':
+ do_nandtest_dev = 1;
+ do_nandtest_ro = 1;
+ break;
default:
return COMMAND_ERROR_USAGE;
}
@@ -213,7 +250,7 @@ static int do_nandtest(int argc, char *argv[])
return COMMAND_ERROR_USAGE;
if (do_nandtest_dev == -1) {
- printf("Please add -t parameter to start nandtest.\n");
+ printf("Please add -t or -r parameter to start nandtest.\n");
return 0;
}
@@ -306,10 +343,13 @@ static int do_nandtest(int argc, char *argv[])
show_progress(test_ofs);
continue;
}
-
- get_random_bytes(wbuf, meminfo.erasesize);
- ret = erase_and_write(test_ofs, wbuf,
- rbuf, length);
+ if (do_nandtest_ro) {
+ ret = read_corrected(test_ofs, rbuf, length);
+ } else {
+ get_random_bytes(wbuf, meminfo.erasesize);
+ ret = erase_and_write(test_ofs, wbuf,
+ rbuf, length);
+ }
if (ret < 0)
goto err2;
}
@@ -339,6 +379,7 @@ err:
BAREBOX_CMD_HELP_START(nandtest)
BAREBOX_CMD_HELP_TEXT("Options:")
BAREBOX_CMD_HELP_OPT ("-t", "Really do a nandtest on device")
+BAREBOX_CMD_HELP_OPT ("-r", "Readonly nandtest on device")
BAREBOX_CMD_HELP_OPT ("-m", "Mark blocks bad if they appear so")
BAREBOX_CMD_HELP_OPT ("-s SEED", "supply random seed")
BAREBOX_CMD_HELP_OPT ("-i ITERATIONS", "nNumber of iterations")