ARM: IGEP0033: Add support for Flattened Device Tree.

Now, the default kernel to boot the IGEP COM AQUILA is device tree based. As
old kernel is deprecated we should adapt the boot commands to use DTB files.

Also, with v3.9 and later of the Linux Kernel, uImage isn't builtable anymore
by default, so we should switch to use the bootz command.

Signed-off-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>

include/configs/igep0033.h

@@ -42,6 +42,9 @@
 /* Display cpuinfo */
 #define CONFIG_DISPLAY_CPUINFO
 
+/* Flattened Device Tree */
+#define CONFIG_OF_LIBFDT
+
 /* Commands to include */
 #include <config_cmd_default.h>
 
@@ -64,37 +67,27 @@
 #define CONFIG_ENV_VARS_UBOOT_CONFIG
 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 #define CONFIG_EXTRA_ENV_SETTINGS \
-	"loadaddr=0x80200000\0" \
-	"rdaddr=0x81000000\0" \
-	"bootfile=/boot/uImage\0" \
+	"loadaddr=0x80F80000\0" \
+	"dtbaddr=0x80200000\0" \
+	"bootdir=/boot\0" \
+	"bootfile=zImage\0" \
+	"dtbfile=am335x-base0033.dtb\0" \
 	"console=ttyO0,115200n8\0" \
-	"optargs=\0" \
 	"mmcdev=0\0" \
 	"mmcroot=/dev/mmcblk0p2 rw\0" \
 	"mmcrootfstype=ext4 rootwait\0" \
-	"ramroot=/dev/ram0 rw ramdisk_size=65536 initrd=${rdaddr},64M\0" \
-	"ramrootfstype=ext2\0" \
 	"mmcargs=setenv bootargs console=${console} " \
-		"${optargs} " \
 		"root=${mmcroot} " \
 		"rootfstype=${mmcrootfstype}\0" \
 	"bootenv=uEnv.txt\0" \
 	"loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
 	"importbootenv=echo Importing environment from mmc ...; " \
-		"env import -t $loadaddr $filesize\0" \
-	"ramargs=setenv bootargs console=${console} " \
-		"${optargs} " \
-		"root=${ramroot} " \
-		"rootfstype=${ramrootfstype}\0" \
-	"loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz\0" \
-	"loaduimagefat=load mmc ${mmcdev} ${loadaddr} ${bootfile}\0" \
-	"loaduimage=load mmc ${mmcdev}:2 ${loadaddr} ${bootfile}\0" \
+		"env import -t ${loadaddr} ${filesize}\0" \
+	"mmcload=load mmc ${mmcdev}:2 ${loadaddr} ${bootdir}/${bootfile}; " \
+		"load mmc ${mmcdev}:2 ${dtbaddr} ${bootdir}/${dtbfile}\0" \
 	"mmcboot=echo Booting from mmc ...; " \
 		"run mmcargs; " \
-		"bootm ${loadaddr}\0" \
-	"ramboot=echo Booting from ramdisk ...; " \
-		"run ramargs; " \
-		"bootm ${loadaddr}\0" \
+		"bootz ${loadaddr} - ${dtbaddr}\0" \
 
 #define CONFIG_BOOTCOMMAND \
 	"mmc dev ${mmcdev}; if mmc rescan; then " \
@@ -107,7 +100,7 @@
 			"echo Running uenvcmd ...;" \
 			"run uenvcmd;" \
 		"fi;" \
-		"if run loaduimage; then " \
+		"if run mmcload; then " \
 			"run mmcboot;" \
 		"fi;" \
 	"fi;" \