env: register erase command
this patch adds basic changes for adding a erase-subcommand to env
with this command the environment stored on non-volatile storage written
by saveenv can be cleared.
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
squashed fixes
- start message with "Erasing"
- mark erase-function as optional
- env: separate eraseenv from saveenv
Suggested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
diff --git a/include/environment.h b/include/environment.h
index cd96676..de67cf4 100644
--- a/include/environment.h
+++ b/include/environment.h
@@ -200,6 +200,7 @@
ENVOP_INIT, /* we want to call the init function */
ENVOP_LOAD, /* we want to call the load function */
ENVOP_SAVE, /* we want to call the save function */
+ ENVOP_ERASE, /* we want to call the erase function */
};
struct env_driver {
@@ -226,6 +227,15 @@
int (*save)(void);
/**
+ * erase() - Erase the environment on storage
+ *
+ * This method is optional and required for 'eraseenv' to work.
+ *
+ * @return 0 if OK, -ve on error
+ */
+ int (*erase)(void);
+
+ /**
* init() - Set up the initial pre-relocation environment
*
* This method is optional.
@@ -304,6 +314,13 @@
int env_save(void);
/**
+ * env_erase() - Erase the environment on storage
+ *
+ * @return 0 if OK, -ve on error
+ */
+int env_erase(void);
+
+/**
* env_fix_drivers() - Updates envdriver as per relocation
*/
void env_fix_drivers(void);