Add support of opts erase for env in ext4, this opts is used by command 'env erase'.
This command only fill the env file (CONFIG_ENV_EXT4_FILE) with 0, the CRC and the saved environment becomes invalid.
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
Changes in v2: - use CONFIG_IS_ENABLED to set .erase (same as .save)
env/ext4.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/env/ext4.c b/env/ext4.c index 027a721b69..7a104c1615 100644 --- a/env/ext4.c +++ b/env/ext4.c @@ -99,6 +99,23 @@ static int env_ext4_save(void) return 0; }
+static int env_ext4_erase(void) +{ + env_t env_new; + int err; + + memset(&env_new, 0, sizeof(env_t)); + + err = env_ext4_save_buffer(&env_new); + if (err) + return err; + + gd->env_valid = ENV_INVALID; + puts("done\n"); + + return 0; +} + static int env_ext4_load(void) { ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); @@ -156,4 +173,6 @@ U_BOOT_ENV_LOCATION(ext4) = { ENV_NAME("EXT4") .load = env_ext4_load, .save = ENV_SAVE_PTR(env_ext4_save), + .erase = CONFIG_IS_ENABLED(CMD_ERASEENV) ? env_ext4_erase : + NULL, };