From patchwork Tue Jun 16 07:40:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Patrick Delaunay X-Patchwork-Id: 242471 List-Id: U-Boot discussion From: patrick.delaunay at st.com (Patrick Delaunay) Date: Tue, 16 Jun 2020 09:40:47 +0200 Subject: [PATCH v2 8/9] env: ext4: add support of command env erase In-Reply-To: <20200616074048.7898-1-patrick.delaunay@st.com> References: <20200616074048.7898-1-patrick.delaunay@st.com> Message-ID: <20200616074048.7898-9-patrick.delaunay@st.com> 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 --- 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, };