diff options
| author | Patrick Delaunay <patrick.delaunay@foss.st.com> | 2022-12-14 16:51:31 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-01-11 15:02:24 -0500 |
| commit | 91fc785834194c7cf2f686a8861a67154e56e817 (patch) | |
| tree | ff8d11612ac3e09e37c27f8eaeeafe51287f7b63 /env | |
| parent | e64289e1ec7c66a2d858aff65c0af501557d538b (diff) | |
env: ubi: add support of command env erase
Add support of opts erase for ubi env backend, this opts is used by
command 'env erase'.
This command only zero-fill the env UBI volume CONFIG_ENV_UBI_VOLUME
and CONFIG_ENV_UBI_VOLUME_REDUND, so the saved environment becomes
invalid.
This patch introduces a local define ENV_UBI_VOLUME_REDUND
only to avoid #if in the code, as CONFIG_ENV_UBI_VOLUME_REDUND
is only defined when CONFIG_SYS_REDUNDAND_ENVIRONMENT is defined.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'env')
| -rw-r--r-- | env/ubi.c | 40 |
1 files changed, 40 insertions, 0 deletions
@@ -28,6 +28,12 @@ DECLARE_GLOBAL_DATA_PTR; +#if CONFIG_SYS_REDUNDAND_ENVIRONMENT +#define ENV_UBI_VOLUME_REDUND CONFIG_ENV_UBI_VOLUME_REDUND +#else +#define ENV_UBI_VOLUME_REDUND "invalid" +#endif + #ifdef CONFIG_CMD_SAVEENV #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT static int env_ubi_save(void) @@ -177,9 +183,43 @@ static int env_ubi_load(void) } #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */ +static int env_ubi_erase(void) +{ + ALLOC_CACHE_ALIGN_BUFFER(char, env_buf, CONFIG_ENV_SIZE); + int ret = 0; + + if (ubi_part(CONFIG_ENV_UBI_PART, UBI_VID_OFFSET)) { + printf("\n** Cannot find mtd partition \"%s\"\n", + CONFIG_ENV_UBI_PART); + return 1; + } + + memset(env_buf, 0x0, CONFIG_ENV_SIZE); + + if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, + (void *)env_buf, CONFIG_ENV_SIZE)) { + printf("\n** Unable to erase env to %s:%s **\n", + CONFIG_ENV_UBI_PART, + CONFIG_ENV_UBI_VOLUME); + ret = 1; + } + if (IS_ENABLED(CONFIG_SYS_REDUNDAND_ENVIRONMENT)) { + if (ubi_volume_write(ENV_UBI_VOLUME_REDUND, + (void *)env_buf, CONFIG_ENV_SIZE)) { + printf("\n** Unable to erase env to %s:%s **\n", + CONFIG_ENV_UBI_PART, + ENV_UBI_VOLUME_REDUND); + ret = 1; + } + } + + return ret; +} + U_BOOT_ENV_LOCATION(ubi) = { .location = ENVL_UBI, ENV_NAME("UBI") .load = env_ubi_load, .save = env_save_ptr(env_ubi_save), + .erase = ENV_ERASE_PTR(env_ubi_erase), }; |