From d2d9bdfcf9bdd6a39119c19c644189fccbe588cc Mon Sep 17 00:00:00 2001 From: "B, Ravi" Date: Wed, 28 Sep 2016 14:46:18 +0530 Subject: spl: saveenv: adding saveenv support in SPL By default saveenv option is not supported for SPL. This patch enable the support for save environment variable for SPL build. Enable save environment support in SPL after setenv. By default the saveenv option is not provided in SPL, but some boards need this support in 'Falcon' boot, where SPL need to boot from different images based on environment variable set by OS. For example OS may set "reboot_image" environment variable to "recovery" inorder to boot recovery image by SPL. The SPL read "reboot_image" and act accordingly and change the reboot_image to default mode using setenv and save the environemnt. Signed-off-by: Ravi Babu Reviewed-by: Simon Glass change in v1: - dropped SUPPORT, use CONFIG_SPL_SAVEENV - updates the comments in mmc_private.h --- common/spl/Kconfig | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'common') diff --git a/common/spl/Kconfig b/common/spl/Kconfig index 84670b1..72aacab 100644 --- a/common/spl/Kconfig +++ b/common/spl/Kconfig @@ -172,6 +172,19 @@ config SPL_ENV_SUPPORT starting U-Boot first. Enabling this option will make getenv() and setenv() available in SPL. +config SPL_SAVEENV + bool "Support save environment" + depends on SPL && SPL_ENV_SUPPORT + help + Enable save environment support in SPL after setenv. By default + the saveenv option is not provided in SPL, but some boards need + this support in 'Falcon' boot, where SPL need to boot from + different images based on environment variable set by OS. For + example OS may set "reboot_image" environment variable to + "recovery" inorder to boot recovery image by SPL. The SPL read + "reboot_image" and act accordingly and change the reboot_image + to default mode using setenv and save the environemnt. + config SPL_ETH_SUPPORT bool "Support Ethernet" depends on SPL_ENV_SUPPORT -- cgit v1.1