From: Eberhard Stoll <[email protected]> Enable CONFIG_ENV_IS_NOWHERE and force default environment when SoC boots from serial loader. In this case the U-Boot environment cannot be stored to flash with the 'saveenv' command.
This makes serial loader boot completely independent from any environment stored in flash. Signed-off-by: Eberhard Stoll <[email protected]> Signed-off-by: Frieder Schrempf <[email protected]> --- board/kontron/sl-mx8mm/sl-mx8mm.c | 8 +++++++- configs/kontron-sl-mx8mm_defconfig | 1 + 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/board/kontron/sl-mx8mm/sl-mx8mm.c b/board/kontron/sl-mx8mm/sl-mx8mm.c index 220c9701ca5..df92765cb2d 100644 --- a/board/kontron/sl-mx8mm/sl-mx8mm.c +++ b/board/kontron/sl-mx8mm/sl-mx8mm.c @@ -182,6 +182,9 @@ enum env_location env_get_location(enum env_operation op, int prio) if (prio) return ENVL_UNKNOWN; + if (CONFIG_IS_ENABLED(ENV_IS_NOWHERE) && is_usb_boot()) + return ENVL_NOWHERE; + /* * Make sure that the environment is loaded from * the MMC if we are running from SD card or eMMC. @@ -194,7 +197,10 @@ enum env_location env_get_location(enum env_operation op, int prio) if (CONFIG_IS_ENABLED(ENV_IS_IN_SPI_FLASH)) return ENVL_SPI_FLASH; - return ENVL_NOWHERE; + if (CONFIG_IS_ENABLED(ENV_IS_NOWHERE)) + return ENVL_NOWHERE; + + return ENVL_UNKNOWN; } #if defined(CONFIG_ENV_IS_IN_MMC) diff --git a/configs/kontron-sl-mx8mm_defconfig b/configs/kontron-sl-mx8mm_defconfig index a2cc4d03963..f9484b908d9 100644 --- a/configs/kontron-sl-mx8mm_defconfig +++ b/configs/kontron-sl-mx8mm_defconfig @@ -112,6 +112,7 @@ CONFIG_PARTITION_TYPE_GUID=y CONFIG_OF_CONTROL=y CONFIG_SPL_OF_CONTROL=y CONFIG_OF_LIST="imx8mm-kontron-bl imx8mm-kontron-bl-osm-s" +CONFIG_ENV_IS_NOWHERE=y CONFIG_ENV_IS_IN_MMC=y CONFIG_ENV_IS_IN_SPI_FLASH=y CONFIG_ENV_REDUNDANT=y -- 2.51.0
