diff options
| author | Frank Wunderlich <frank-w@public-files.de> | 2019-06-29 11:36:20 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-07-18 11:31:26 -0400 |
| commit | 3485392506decf3896b7f742c1300cbdf8b31f83 (patch) | |
| tree | 5b5a8d5403cd4b18da66c27bdf6dfd286a4913cc /env | |
| parent | cd121bdb6df3fe8dfe45ff1e34f46f86b8f060c0 (diff) | |
env: mmc: add erase-function
this adds erase environment for mmc storage
squashed fixes:
- add CONFIG_CMD_ERASEENV
- env: erase redundant offset if defined
- changes mentioned by Simon
- fix whitespaces around errmsg
Suggested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Diffstat (limited to 'env')
| -rw-r--r-- | env/mmc.c | 51 |
1 files changed, 51 insertions, 0 deletions
@@ -242,6 +242,54 @@ fini: fini_mmc_for_env(mmc); return ret; } + +#if defined(CONFIG_CMD_ERASEENV) +static inline int erase_env(struct mmc *mmc, unsigned long size, + unsigned long offset) +{ + uint blk_start, blk_cnt, n; + struct blk_desc *desc = mmc_get_blk_desc(mmc); + + blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len; + blk_cnt = ALIGN(size, mmc->write_bl_len) / mmc->write_bl_len; + + n = blk_derase(desc, blk_start, blk_cnt); + printf("%d blocks erased: %s\n", n, (n == blk_cnt) ? "OK" : "ERROR"); + + return (n == blk_cnt) ? 0 : 1; +} + +static int env_mmc_erase(void) +{ + int dev = mmc_get_env_dev(); + struct mmc *mmc = find_mmc_device(dev); + int ret, copy = 0; + u32 offset; + const char *errmsg; + + errmsg = init_mmc_for_env(mmc); + if (errmsg) { + printf("%s\n", errmsg); + return 1; + } + + if (mmc_get_env_addr(mmc, copy, &offset)) + return CMD_RET_FAILURE; + + ret = erase_env(mmc, CONFIG_ENV_SIZE, offset); + +#ifdef CONFIG_ENV_OFFSET_REDUND + copy = 1; + + if (mmc_get_env_addr(mmc, copy, &offset)) + return CMD_RET_FAILURE; + + ret |= erase_env(mmc, CONFIG_ENV_SIZE, offset); +#endif + + return ret; +} +#endif /* CONFIG_CMD_ERASEENV */ #endif /* CONFIG_CMD_SAVEENV && !CONFIG_SPL_BUILD */ static inline int read_env(struct mmc *mmc, unsigned long size, @@ -351,5 +399,8 @@ U_BOOT_ENV_LOCATION(mmc) = { .load = env_mmc_load, #ifndef CONFIG_SPL_BUILD .save = env_save_ptr(env_mmc_save), +#if defined(CONFIG_CMD_ERASEENV) + .erase = env_mmc_erase, +#endif #endif }; |