[PATCH v5 4/4] rockchip: roc-pc-rk3399: Enable redundant environment

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@nabladev.com>

Keep the primary U-Boot environment at its existing 0x3f8000 offset and
use the preceding 32 KiB region at 0x3f0000 for the redundant copy.

Both copies are aligned to the 4 KiB erase size and together occupy
0x3f0000 through 0x3fffff. Redundancy protects the environment against
power loss or an interrupted update.

Signed-off-by: Fabio Estevam <festevam@nabladev.com>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
---
Changes since v4:
- None. Only added Quentin's Reviewed-by tag.

 configs/roc-pc-rk3399_defconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configs/roc-pc-rk3399_defconfig b/configs/roc-pc-rk3399_defconfig
index 53182dc8251..4347bab598a 100644
--- a/configs/roc-pc-rk3399_defconfig
+++ b/configs/roc-pc-rk3399_defconfig
@@ -17,6 +17,7 @@ CONFIG_SYS_LOAD_ADDR=0x800800
 CONFIG_SF_DEFAULT_BUS=1
 CONFIG_DEBUG_UART_BASE=0xFF1A0000
 CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_ENV_OFFSET_REDUND=0x3F0000
 CONFIG_SPL_SPI_FLASH_SUPPORT=y
 CONFIG_SPL_SPI=y
 CONFIG_DEBUG_UART=y
@@ -41,6 +42,7 @@ CONFIG_SPL_OF_CONTROL=y
 CONFIG_OF_LIST="rockchip/rk3399-roc-pc rockchip/rk3399-roc-pc-plus"
 CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
 CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_REDUNDANT=y
 CONFIG_ENV_RELOC_GD_ENV_ADDR=y
 CONFIG_ROCKCHIP_GPIO=y
 CONFIG_SYS_I2C_ROCKCHIP=y
-- 
2.43.0