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/cmd/Kconfig b/cmd/Kconfig
index 67284d8..ec746fe 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -408,6 +408,14 @@
Save all environment variables into the compiled-in persistent
storage.
+config CMD_ERASEENV
+ bool "eraseenv"
+ default n
+ depends on CMD_SAVEENV
+ help
+ Erase environment variables from the compiled-in persistent
+ storage.
+
config CMD_ENV_EXISTS
bool "env exists"
default y