ARM: at91: sama5: move the sd/mmc env config to at91-sama5_common.h

As almost all sama5 sd/mmc env configurations are same, so move them to
at91-sama5_common.h.

Also define CONFIG_ENV_VARS_UBOOT_CONFIG to have the varaible: $board_name.
Then we can use 'at91-${board_name}.dtb' as the dtb name.

TODO: since sama5d3xek has different dtb name, we need to some extra
stuff to make it work on sama5d3xek boards.

Signed-off-by: Josh Wu <josh.wu@atmel.com>

include/configs/at91-sama5_common.h

@@ -27,6 +27,7 @@
 #define CONFIG_BOARD_EARLY_INIT_F
 #define CONFIG_DISPLAY_CPUINFO
 
+#define CONFIG_ENV_VARS_UBOOT_CONFIG
 #define CONFIG_CMD_BOOTZ
 #define CONFIG_OF_LIBFDT		/* Device Tree support */
 
@@ -52,6 +53,17 @@
 #define CONFIG_CMD_DHCP
 
 #ifdef CONFIG_SYS_USE_MMC
+/* u-boot env in sd/mmc card */
+#define CONFIG_ENV_IS_IN_FAT
+#define CONFIG_FAT_WRITE
+#define FAT_ENV_INTERFACE	"mmc"
+#define FAT_ENV_DEVICE_AND_PART	"0"
+#define FAT_ENV_FILE		"uboot.env"
+#define CONFIG_ENV_SIZE		0x4000
+
+#define CONFIG_BOOTCOMMAND	"fatload mmc 0:1 0x21000000 at91-${board_name}.dtb; " \
+				"fatload mmc 0:1 0x22000000 zImage; "	\
+				"bootz 0x22000000 - 0x21000000"
 #define CONFIG_BOOTARGS							\
 	"console=ttyS0,115200 earlyprintk "				\
 	"root=/dev/mmcblk0p2 rw rootwait"

include/configs/sama5d3_xplained.h

@@ -124,15 +124,7 @@
 				"nand read 0x22000000 0x200000 0x600000;" \
 				"bootz 0x22000000 - 0x21000000"
 #elif CONFIG_SYS_USE_MMC
-/* bootstrap + u-boot + env in sd card */
+/* override the bootcmd, bootargs and other configuration for sd/mmc env */
-#define CONFIG_ENV_IS_IN_FAT
-#define FAT_ENV_INTERFACE	"mmc"
-#define FAT_ENV_FILE		"uboot.env"
-#define FAT_ENV_DEVICE_AND_PART	"0"
-#define CONFIG_ENV_SIZE		0x4000
-#define CONFIG_BOOTCOMMAND	"fatload mmc 0:1 0x21000000 at91-sama5d3_xplained.dtb; " \
-				"fatload mmc 0:1 0x22000000 zImage; " \
-				"bootz 0x22000000 - 0x21000000"
 #else
 #define CONFIG_ENV_IS_NOWHERE
 #endif

include/configs/sama5d3xek.h

@@ -171,15 +171,7 @@
 				"nand read 0x22000000 0x200000 0x600000;" \
 				"bootm 0x22000000 - 0x21000000"
 #elif CONFIG_SYS_USE_MMC
-/* bootstrap + u-boot + env in sd card */
+/* override the bootcmd, bootargs and other configuration for sd/mmc env */
-#define CONFIG_ENV_IS_IN_FAT
-#define FAT_ENV_INTERFACE	"mmc"
-#define FAT_ENV_FILE		"uboot.env"
-#define FAT_ENV_DEVICE_AND_PART	"0"
-#define CONFIG_ENV_SIZE		0x4000
-#define CONFIG_BOOTCOMMAND	"fatload mmc 0:1 0x21000000 dtb; " \
-				"fatload mmc 0:1 0x22000000 uImage; " \
-				"bootm 0x22000000 - 0x21000000"
 #else
 #define CONFIG_ENV_IS_NOWHERE
 #endif

include/configs/sama5d4_xplained.h

@@ -138,25 +138,9 @@
 				"nand read 0x22000000 0x200000 0x600000;" \
 				"bootz 0x22000000 - 0x21000000"
 #elif CONFIG_SYS_USE_MMC
-/* bootstrap + u-boot + env in sd card */
+/* override the bootcmd, bootargs and other configuration for sd/mmc env */
-#define CONFIG_ENV_IS_IN_FAT
-#define CONFIG_FAT_WRITE
-#define FAT_ENV_INTERFACE	"mmc"
-/*
- * We don't specify the part number, if device 0 has partition table, it means
- * the first partition; it no partition table, then take whole device as a
- * FAT file system.
- */
-#define FAT_ENV_DEVICE_AND_PART	"0"
-#define FAT_ENV_FILE		"uboot.env"
-#define CONFIG_ENV_SIZE		0x4000
-#define CONFIG_BOOTCOMMAND	"fatload mmc 0:1 0x21000000 at91-sama5d4_xplained.dtb; " \
-				"fatload mmc 0:1 0x22000000 zImage; " \
-				"bootz 0x22000000 - 0x21000000"
 #endif
 
-
-
 /* SPL */
 #define CONFIG_SPL_FRAMEWORK
 #define CONFIG_SPL_TEXT_BASE		0x200000

include/configs/sama5d4ek.h

@@ -136,21 +136,7 @@
 				"nand read 0x22000000 0x200000 0x600000;" \
 				"bootz 0x22000000 - 0x21000000"
 #elif CONFIG_SYS_USE_MMC
-/* bootstrap + u-boot + env in sd card */
+/* override the bootcmd, bootargs and other configuration for sd/mmc env */
-#define CONFIG_ENV_IS_IN_FAT
-#define CONFIG_FAT_WRITE
-#define FAT_ENV_INTERFACE	"mmc"
-/*
- * We don't specify the part number, if device 0 has partition table, it means
- * the first partition; it no partition table, then take whole device as a
- * FAT file system.
- */
-#define FAT_ENV_DEVICE_AND_PART	"0"
-#define FAT_ENV_FILE		"uboot.env"
-#define CONFIG_ENV_SIZE		0x4000
-#define CONFIG_BOOTCOMMAND	"fatload mmc 0:1 0x21000000 sama5d4ek.dtb; " \
-				"fatload mmc 0:1 0x22000000 zImage; " \
-				"bootz 0x22000000 - 0x21000000"
 #endif
 
 /* SPL */