env: Allow U-Boot scripts to be placed in a .env file

[platform/kernel/u-boot.git] / env / Kconfig

diff --git a/env/Kconfig b/env/Kconfig
index 06d72ba..24966f8 100644 (file)
--- a/env/Kconfig
+++ b/env/Kconfig
@@ -3,6 +3,24 @@ menu "Environment"
 config ENV_SUPPORT
        def_bool y
 
+config ENV_SOURCE_FILE
+       string "Environment file to use"
+       default ""
+       help
+         This sets the basename to use to generate the default environment.
+         This a text file as described in doc/usage/environment.rst
+
+         The file must be in the board directory and have a .env extension, so
+         the resulting filename is typically
+         board/<vendor>/<board>/<CONFIG_ENV_SOURCE_FILE>.env
+
+         If the file is not present, an error is produced.
+
+         If this CONFIG is empty, U-Boot uses CONFIG SYS_BOARD as a default, if
+         the file board/<vendor>/<board>/<SYS_BOARD>.env exists. Otherwise the
+         environment is assumed to come from the ad-hoc
+         CONFIG_EXTRA_ENV_SETTINGS #define
+
 config SAVEENV
        def_bool y if CMD_SAVEENV