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authorManikandan Ramachandran <crmanik@gmail.com>2015-08-06 11:38:14 -0700
committerDavid Oberhollenzer <david.oberhollenzer@sigma-star.at>2017-02-21 11:34:05 +0100
commitd7e86124d55bbcee1b82c68b82389ebcda588076 (patch)
tree2cd900df663de57d1cb4dbfe182ab04bdd3228c9 /misc-utils/flash_erase.c
parentfc7aa01f07919155fc167846125bc8f7e965b89d (diff)
mtd-utils: Support jffs2 flash-erase for large OOB (>32b)
"flash_erase" fails on nand flash with JFFS2 that has OOB size greater than 32 bytes. "flash_erase" uses "MEMGETOOSEL" to determine OOB size. This ioctl call is obsolete and returns error if OOB size is more than 32 bytes. This patch fixes this issue by using "mtd_write" to update clean-marker instead of mtd_oob_write. This fix is based on the discussion: http://lists.infradead.org/pipermail/linux-mtd/2011-September/037958.html. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'misc-utils/flash_erase.c')
-rw-r--r--misc-utils/flash_erase.c38
1 files changed, 4 insertions, 34 deletions
diff --git a/misc-utils/flash_erase.c b/misc-utils/flash_erase.c
index 2bca78d..6db9fa3 100644
--- a/misc-utils/flash_erase.c
+++ b/misc-utils/flash_erase.c
@@ -92,7 +92,7 @@ int main(int argc, char *argv[])
{
libmtd_t mtd_desc;
struct mtd_dev_info mtd;
- int fd, clmpos = 0, clmlen = 8;
+ int fd;
unsigned long long start;
unsigned int eb, eb_start, eb_cnt;
bool isNAND;
@@ -191,37 +191,6 @@ int main(int argc, char *argv[])
if (!isNAND)
cleanmarker.totlen = cpu_to_je32(sizeof(cleanmarker));
else {
- struct nand_oobinfo oobinfo;
-
- if (ioctl(fd, MEMGETOOBSEL, &oobinfo) != 0)
- return sys_errmsg("%s: unable to get NAND oobinfo", mtd_device);
-
- /* Check for autoplacement */
- if (oobinfo.useecc == MTD_NANDECC_AUTOPLACE) {
- /* Get the position of the free bytes */
- if (!oobinfo.oobfree[0][1])
- return errmsg(" Eeep. Autoplacement selected and no empty space in oob");
- clmpos = oobinfo.oobfree[0][0];
- clmlen = oobinfo.oobfree[0][1];
- if (clmlen > 8)
- clmlen = 8;
- } else {
- /* Legacy mode */
- switch (mtd.oob_size) {
- case 8:
- clmpos = 6;
- clmlen = 2;
- break;
- case 16:
- clmpos = 8;
- clmlen = 8;
- break;
- case 64:
- clmpos = 16;
- clmlen = 8;
- break;
- }
- }
cleanmarker.totlen = cpu_to_je32(8);
}
cleanmarker.hdr_crc = cpu_to_je32(mtd_crc32(0, &cleanmarker, sizeof(cleanmarker) - 4));
@@ -271,7 +240,8 @@ int main(int argc, char *argv[])
/* write cleanmarker */
if (isNAND) {
- if (mtd_write_oob(mtd_desc, &mtd, fd, (uint64_t)offset + clmpos, clmlen, &cleanmarker) != 0) {
+ if (mtd_write(mtd_desc, &mtd, fd, eb, 0, NULL, 0, &cleanmarker, 0,
+ MTD_OPS_AUTO_OOB) != 0) {
sys_errmsg("%s: MTD writeoob failure", mtd_device);
continue;
}
@@ -281,7 +251,7 @@ int main(int argc, char *argv[])
continue;
}
}
- verbose(!quiet, " Cleanmarker written at %"PRIxoff_t, offset);
+ verbose(!quiet, " Cleanmarker Updated.");
}
show_progress(&mtd, offset, eb, eb_start, eb_cnt);
bareverbose(!quiet, "\n");