diff options
Diffstat (limited to 'tests/mtd-tests/nandbiterrs.c')
| -rw-r--r-- | tests/mtd-tests/nandbiterrs.c | 43 |
1 files changed, 35 insertions, 8 deletions
diff --git a/tests/mtd-tests/nandbiterrs.c b/tests/mtd-tests/nandbiterrs.c index de9d0dd..200fe1c 100644 --- a/tests/mtd-tests/nandbiterrs.c +++ b/tests/mtd-tests/nandbiterrs.c @@ -62,6 +62,7 @@ #define KEEP_CONTENTS 0x01 #define MODE_INCREMENTAL 0x02 #define MODE_OVERWRITE 0x04 +#define PAGE_ERASED 0x08 static int peb = -1, page = -1, max_overwrite = -1, seed = -1; static const char *mtddev; @@ -77,6 +78,7 @@ static const struct option options[] = { { "peb", required_argument, NULL, 'b' }, { "page", required_argument, NULL, 'p' }, { "seed", required_argument, NULL, 's' }, + { "erased", no_argument, NULL, 'e' }, { "writes", required_argument, NULL, 'w' }, { "incremental", no_argument, NULL, 'i' }, { "overwrite", no_argument, NULL, 'o' }, @@ -92,7 +94,8 @@ static void usage(int status) " -k, --keep Restore existing contents after test\n" " -b, --peb <num> Use this physical erase block\n" " -p, --page <num> Use this page within the erase block\n" - " -s, --seed <num> Specify seed for PRNG\n\n" + " -s, --seed <num> Specify seed for PRNG\n" + " -e, --erased Test erased pages instead of written pages\n\n" "Options controling test mode:\n" " -i, --incremental Manually insert bit errors until ECC fails\n" " -o, --overwrite Rewrite page until bits flip and ECC fails\n\n" @@ -121,7 +124,7 @@ static void process_options(int argc, char **argv) int c; while (1) { - c = getopt_long(argc, argv, "hkb:p:s:iow:", options, NULL); + c = getopt_long(argc, argv, "hkb:p:s:eiow:", options, NULL); if (c == -1) break; @@ -169,6 +172,9 @@ static void process_options(int argc, char **argv) if (page < 0) goto failarg; break; + case 'e': + flags |= PAGE_ERASED; + break; case 'h': usage(EXIT_SUCCESS); default: @@ -224,17 +230,39 @@ static unsigned char hash(unsigned int offset) return c; } +static void init_buffer(void) +{ + unsigned int i; + + if (flags & PAGE_ERASED) { + memset(wbuffer, 0xff, pagesize); + } else { + for (i = 0; i < pagesize; ++i) + wbuffer[i] = hash(i+seed); + } +} + static int write_page(void) { + int raw = flags & PAGE_ERASED; int err; + if (raw && ioctl(fd, MTDFILEMODE, MTD_FILE_MODE_RAW) != 0) + goto fail_mode; + err = mtd_write(mtd_desc, &mtd, fd, peb, page*pagesize, wbuffer, pagesize, NULL, 0, 0); if (err) fprintf(stderr, "Failed to write page %d in block %d\n", peb, page); + if (raw && ioctl(fd, MTDFILEMODE, MTD_FILE_MODE_NORMAL) != 0) + goto fail_mode; + return err; +fail_mode: + perror("MTDFILEMODE"); + return -1; } static int rewrite_page(void) @@ -285,10 +313,11 @@ failstats: static int verify_page(void) { + int erased = flags & PAGE_ERASED; unsigned int i, errs = 0; for (i = 0; i < pagesize; ++i) { - if (rbuffer[i] != hash(i+seed)) + if (rbuffer[i] != (erased ? 0xff : hash(i+seed))) ++errs; } @@ -321,13 +350,12 @@ static int insert_biterror(void) * errors into the page, while verifying each step. */ static int incremental_errors_test(void) { - unsigned int i, errs_per_subpage = 0; + unsigned int errs_per_subpage = 0; int count = 0; puts("incremental biterrors test"); - for (i = 0; i < pagesize; ++i) - wbuffer[i] = hash(i+seed); + init_buffer(); if (write_page() != 0) return -1; @@ -372,8 +400,7 @@ static int overwrite_test(void) puts("overwrite biterrors test"); - for (i = 0; i < pagesize; ++i) - wbuffer[i] = hash(i+seed); + init_buffer(); if (write_page() != 0) return -1; |