diff --git a/board/milkv/cv1800b_milkv_duo/Kconfig b/board/milkv/cv1800b_milkv_duo/Kconfig
index 4b2d7102d7..735f6b7705 100644
--- a/board/milkv/cv1800b_milkv_duo/Kconfig
+++ b/board/milkv/cv1800b_milkv_duo/Kconfig
@@ -25,6 +25,7 @@ config BOARD_SPECIFIC_OPTIONS
 	imply OF_CONTROL
 	imply OF_REAL
 	imply PINCTRL_CV1800B
+	imply CVITEK_SPIF
 	imply DM_I2C
 	imply SYS_I2C_DW
 endif
diff --git a/configs/cv1800b_milkv_duo_defconfig b/configs/cv1800b_milkv_duo_defconfig
index fd9ae11880..1049cebb4a 100644
--- a/configs/cv1800b_milkv_duo_defconfig
+++ b/configs/cv1800b_milkv_duo_defconfig
@@ -4,7 +4,10 @@ CONFIG_SYS_MALLOC_F_LEN=0x3000
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
 CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x80200000
+CONFIG_ENV_SIZE=0xf000
+CONFIG_ENV_OFFSET=0x400000
 CONFIG_DEFAULT_DEVICE_TREE="cv1800b-milkv-duo"
+CONFIG_ENV_OFFSET_REDUND=0x410000
 CONFIG_SYS_LOAD_ADDR=0x80200000
 CONFIG_TARGET_CV1800B_MILKV_DUO=y
 CONFIG_ARCH_RV64I=y
@@ -42,9 +45,8 @@ CONFIG_CMD_BOOTMENU=y
 # CONFIG_CMD_EXPORTENV is not set
 # CONFIG_CMD_IMPORTENV is not set
 # CONFIG_CMD_EDITENV is not set
-# CONFIG_CMD_SAVEENV is not set
+CONFIG_CMD_ERASEENV=y
 # CONFIG_CMD_CRC32 is not set
-# CONFIG_CMD_MEMORY is not set
 # CONFIG_CMD_LZMADEC is not set
 # CONFIG_CMD_UNLZ4 is not set
 # CONFIG_CMD_UNZIP is not set
@@ -55,6 +57,8 @@ CONFIG_CMD_BOOTMENU=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_SLEEP is not set
 CONFIG_PARTITION_TYPE_GUID=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_VERSION_VARIABLE=y
 # CONFIG_NET is not set
@@ -66,9 +70,11 @@ CONFIG_SYSCON=y
 # CONFIG_INPUT is not set
 # CONFIG_DM_MMC is not set
 # CONFIG_MTD is not set
+CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_PINCTRL=y
 # CONFIG_POWER is not set
 CONFIG_SYS_NS16550=y
+CONFIG_SPI=y
 CONFIG_AES=y
 CONFIG_BLAKE2=y
 CONFIG_SHA512=y