[PATCH v3 06/19] imx: kontron-sl-mx8mm: Add redundant environment and SPI NOR partitions

[Frieder Schrempf]

From: Frieder Schrempf <frieder.schre...@kontron.de>

Enable the redundant environment feature to allow falling back in case of
storage corruption. The partition layout for the SPI NOR device is added
to the devicetree.

Signed-off-by: Frieder Schrempf <frieder.schre...@kontron.de>
Reviewed-by: Fabio Estevam <feste...@denx.de>
---
Changes in v3:
* fix hex numbers and unit addresses in partitions

Changes in v2:
* describe SPI NOR partitions in devicetree
* move environment to end of SPI NOR
---
 arch/arm/dts/imx8mm-kontron-n801x-som.dtsi | 21 +++++++++++++++++++++
 configs/kontron-sl-mx8mm_defconfig         |  4 +++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/arch/arm/dts/imx8mm-kontron-n801x-som.dtsi 
b/arch/arm/dts/imx8mm-kontron-n801x-som.dtsi
index 8f90eb02550..3b66e560927 100644
--- a/arch/arm/dts/imx8mm-kontron-n801x-som.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-n801x-som.dtsi
@@ -70,6 +70,27 @@
                compatible = "mxicy,mx25r1635f", "jedec,spi-nor";
                spi-max-frequency = <80000000>;
                reg = <0>;
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       partition@0 {
+                               label = "u-boot";
+                               reg = <0x0 0x1e0000>;
+                       };
+
+                       partition@1e0000 {
+                               label = "env";
+                               reg = <0x1e0000 0x10000>;
+                       };
+
+                       partition@1f0000 {
+                               label = "env_redundant";
+                               reg = <0x1f0000 0x10000>;
+                       };
+               };
        };
 };
 
diff --git a/configs/kontron-sl-mx8mm_defconfig 
b/configs/kontron-sl-mx8mm_defconfig
index b67ab8668db..5c1dc754967 100644
--- a/configs/kontron-sl-mx8mm_defconfig
+++ b/configs/kontron-sl-mx8mm_defconfig
@@ -6,7 +6,7 @@ CONFIG_SPL_GPIO=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_ENV_SIZE=0x10000
-CONFIG_ENV_OFFSET=0x1f0000
+CONFIG_ENV_OFFSET=0x1E0000
 CONFIG_ENV_SECT_SIZE=0x10000
 CONFIG_IMX_CONFIG="board/kontron/sl-mx8mm/imximage.cfg"
 CONFIG_DM_GPIO=y
@@ -19,6 +19,7 @@ CONFIG_SPL_SERIAL=y
 CONFIG_SPL_DRIVERS_MISC=y
 CONFIG_BOOTCOUNT_BOOTLIMIT=3
 CONFIG_SPL=y
+CONFIG_ENV_OFFSET_REDUND=0x1F0000
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI=y
 CONFIG_SYS_LOAD_ADDR=0x42000000
@@ -72,6 +73,7 @@ CONFIG_CMD_EXT4_WRITE=y
 CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
 CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_SPL_DM=y
-- 
2.37.2