imx: kontron-sl-mx6ul: Enable redundant environment

This aligns the MTD partitions on the SPI NOR with the kernel
devicetree and enables the redundant environment.

Signed-off-by: Oualid Derouiche <oualid.derouiche@kontron.de>
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>

configs/kontron-sl-mx6ul_defconfig

@@ -7,9 +7,9 @@ CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_SF_DEFAULT_SPEED=10000000
-CONFIG_ENV_SIZE=0x10000
+CONFIG_ENV_SIZE=0x8000
 CONFIG_ENV_OFFSET=0xF0000
-CONFIG_ENV_SECT_SIZE=0x10000
+CONFIG_ENV_SECT_SIZE=0x4000
 CONFIG_MX6UL=y
 CONFIG_TARGET_KONTRON_MX6UL=y
 CONFIG_DM_GPIO=y
@@ -19,6 +19,7 @@ CONFIG_SPL_SERIAL=y
 CONFIG_BOOTCOUNT_BOOTLIMIT=3
 CONFIG_SF_DEFAULT_BUS=1
 CONFIG_SPL=y
+CONFIG_ENV_OFFSET_REDUND=0xF8000
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI=y
 CONFIG_SYS_MEMTEST_START=0x80000000
@@ -56,7 +57,7 @@ CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FS_UUID=y
 CONFIG_CMD_MTDPARTS=y
 CONFIG_MTDIDS_DEFAULT="nor0=spi1.0,spi-nand0=spi4.0"
-CONFIG_MTDPARTS_DEFAULT="mtdparts=spi1.0:128k(spl),832k(u-boot),64k(env);spi4.0:-(UBI)"
+CONFIG_MTDPARTS_DEFAULT="mtdparts=spi1.0:960k(u-boot),32k(env),32k(env_redundant);spi4.0:-(UBI)"
 CONFIG_CMD_UBI=y
 CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
@@ -64,6 +65,7 @@ CONFIG_OF_LIST="imx6ul-kontron-bl imx6ull-kontron-bl"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_REDUNDANT=y
 CONFIG_USE_ETHPRIME=y
 CONFIG_ETHPRIME="eth0"
 CONFIG_USE_HOSTNAME=y