diff options
| author | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2016-04-26 00:13:23 +0200 |
|---|---|---|
| committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2016-11-17 11:36:55 +0100 |
| commit | 5d524111adc549ec80e577dd3d9045a4c589fa7b (patch) | |
| tree | 413e9b4560af154d29589f335a96a35304015977 | |
| parent | 3516b8b7558a69dfd06410b0c997d096a78221c9 (diff) | |
mtd-utils: Add multi-block erase function
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Signed-off-by: Richard Weinberger <richard@nod.at>
| -rw-r--r-- | include/libmtd.h | 14 | ||||
| -rw-r--r-- | lib/libmtd.c | 14 |
2 files changed, 26 insertions, 2 deletions
diff --git a/include/libmtd.h b/include/libmtd.h index a6ff050..f9f3164 100644 --- a/include/libmtd.h +++ b/include/libmtd.h @@ -174,6 +174,20 @@ int mtd_lock(const struct mtd_dev_info *mtd, int fd, int eb); int mtd_unlock(const struct mtd_dev_info *mtd, int fd, int eb); /** + * mtd_erase - erase multiple eraseblocks. + * @desc: MTD library descriptor + * @mtd: MTD device description object + * @fd: MTD device node file descriptor + * @eb: index of first eraseblock to erase + * @blocks: the number of eraseblocks to erase + * + * This function erases @blocks starting at eraseblock @eb of MTD device + * described by @fd. Returns %0 in case of success and %-1 in case of failure. + */ +int mtd_erase_multi(libmtd_t desc, const struct mtd_dev_info *mtd, + int fd, int eb, int blocks); + +/** * mtd_erase - erase an eraseblock. * @desc: MTD library descriptor * @mtd: MTD device description object diff --git a/lib/libmtd.c b/lib/libmtd.c index 1d162c7..ff11806 100644 --- a/lib/libmtd.c +++ b/lib/libmtd.c @@ -845,7 +845,8 @@ int mtd_unlock(const struct mtd_dev_info *mtd, int fd, int eb) return mtd_xlock(mtd, fd, eb, MEMUNLOCK); } -int mtd_erase(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb) +int mtd_erase_multi(libmtd_t desc, const struct mtd_dev_info *mtd, + int fd, int eb, int blocks) { int ret; struct libmtd *lib = (struct libmtd *)desc; @@ -856,8 +857,12 @@ int mtd_erase(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb) if (ret) return ret; + ret = mtd_valid_erase_block(mtd, eb + blocks - 1); + if (ret) + return ret; + ei64.start = (__u64)eb * mtd->eb_size; - ei64.length = mtd->eb_size; + ei64.length = (__u64)mtd->eb_size * blocks; if (lib->offs64_ioctls == OFFS64_IOCTLS_SUPPORTED || lib->offs64_ioctls == OFFS64_IOCTLS_UNKNOWN) { @@ -892,6 +897,11 @@ int mtd_erase(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb) return 0; } +int mtd_erase(libmtd_t desc, const struct mtd_dev_info *mtd, int fd, int eb) +{ + return mtd_erase_multi(desc, mtd, fd, eb, 1); +} + int mtd_regioninfo(int fd, int regidx, struct region_info_user *reginfo) { int ret; |