[U-Boot] [PATCH] ARM: da850-evm: Increase environment NOR partition offset

[Adam Ford]

The current size allocated to U-Boot is 384k, but U-Boot has grown
to 436K which means that saving the environmental variables wipes
out part of the U-Boot source and the board ceases to function.
Due to the sector and erase size for the NOR part and a desire to
not have to change partition sizes often, this patch moves the
U-Boot environmental variables to an offset of 1M so saveenv
does not brick the board.  This patch also sets up MTDIDS and
MTDPARTS to clearly show where U-Boot and U-Boot's environmental
variables are located.

Signed-off-by: Adam Ford <aford173 at gmail.com>

diff --git a/configs/da850evm_direct_nor_defconfig b/configs/da850evm_direct_nor_defconfig
index e3c2d13986..1c0e237571 100644
--- a/configs/da850evm_direct_nor_defconfig
+++ b/configs/da850evm_direct_nor_defconfig
@@ -21,10 +21,11 @@ CONFIG_SYS_PROMPT="U-Boot > "
 CONFIG_CMD_IMLS=y
 CONFIG_CRC32_VERIFY=y
 CONFIG_CMD_DM=y
-# CONFIG_CMD_GPIO is not set
 # CONFIG_CMD_GPT is not set
 # CONFIG_CMD_MMC is not set
+CONFIG_CMD_MTD=y
 # CONFIG_CMD_PART is not set
+# CONFIG_CMD_SF is not set
 # CONFIG_CMD_SPI is not set
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_TIME is not set
@@ -32,6 +33,9 @@ CONFIG_CMD_DM=y
 # CONFIG_CMD_EXT4 is not set
 # CONFIG_CMD_FAT is not set
 # CONFIG_CMD_FS_GENERIC is not set
+CONFIG_CMD_MTDPARTS=y
+CONFIG_MTDIDS_DEFAULT="nor0=physmap-flash.2"
+CONFIG_MTDPARTS_DEFAULT="mtdparts=physmap-flash.2:1m(u-boot),128k(u-boot-env),-(spare)"
 CONFIG_CMD_DIAG=y
 CONFIG_OF_CONTROL=y
 CONFIG_DEFAULT_DEVICE_TREE="da850-evm"
@@ -45,6 +49,8 @@ CONFIG_SYS_I2C_DAVINCI=y
 CONFIG_MTD=y
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_FLASH_CFI_DRIVER=y
+CONFIG_SYS_FLASH_USE_BUFFER_WRITE=y
+CONFIG_FLASH_CFI_MTD=y
 CONFIG_SYS_FLASH_PROTECTION=y
 CONFIG_SYS_FLASH_CFI=y
 CONFIG_DM_SPI_FLASH=y
@@ -64,7 +70,6 @@ CONFIG_DM_SPI=y
 CONFIG_DAVINCI_SPI=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
-# CONFIG_SPL_DM_USB is not set
 CONFIG_USB_OHCI_HCD=y
 CONFIG_USB_OHCI_DA8XX=y
 CONFIG_USB_STORAGE=y
diff --git a/include/configs/da850evm.h b/include/configs/da850evm.h
index 0281dbd7b4..9bd6da015e 100644
--- a/include/configs/da850evm.h
+++ b/include/configs/da850evm.h
@@ -192,7 +192,7 @@
 #ifdef CONFIG_USE_NOR
 #define CONFIG_SYS_MAX_FLASH_BANKS	1 /* max number of flash banks */
 #define CONFIG_SYS_FLASH_SECT_SZ	(128 << 10) /* 128KB */
-#define CONFIG_ENV_OFFSET		(CONFIG_SYS_FLASH_SECT_SZ * 3)
+#define CONFIG_ENV_OFFSET		(SZ_1M)
 #define CONFIG_ENV_SIZE			(10 << 10) /* 10KB */
 #define CONFIG_SYS_FLASH_BASE		DAVINCI_ASYNC_EMIF_DATA_CE2_BASE
 #define PHYS_FLASH_SIZE			(8 << 20) /* Flash size 8MB */
-- 
2.17.1