config: exynos: common: Provide env variables to support Image.itb

This change allows using Image.itb image format with Exynos4 devices
(especially trats and trats2).
Such change facilitates automated testing since only one binary needs
to be prepared.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

include/configs/exynos4-common.h

@@ -66,4 +66,58 @@
 #define CONFIG_CMD_USB_MASS_STORAGE
 #define CONFIG_USB_GADGET_MASS_STORAGE
 
+/* Common environment variables */
+#define CONFIG_EXTRA_ENV_ITB \
+	"loadkernel=load mmc ${mmcbootdev}:${mmcbootpart} ${kerneladdr} " \
+		"${kernelname}\0" \
+	"loadinitrd=load mmc ${mmcbootdev}:${mmcbootpart} ${initrdaddr} " \
+		"${initrdname}\0" \
+	"loaddtb=load mmc ${mmcbootdev}:${mmcbootpart} ${fdtaddr} " \
+		"${fdtfile}\0" \
+	"check_ramdisk=" \
+		"if run loadinitrd; then " \
+			"setenv initrd_addr ${initrdaddr};" \
+		"else " \
+			"setenv initrd_addr -;" \
+		"fi;\0" \
+	"check_dtb=" \
+		"if run loaddtb; then " \
+			"setenv fdt_addr ${fdtaddr};" \
+		"else " \
+			"setenv fdt_addr;" \
+		"fi;\0" \
+	"kernel_args=" \
+		"setenv bootargs root=/dev/mmcblk${mmcdev}p${mmcrootpart}" \
+		" ${lpj} rootwait ${console} ${meminfo} ${opts} ${lcdinfo};\0" \
+	"boot_fit=" \
+		"setenv kerneladdr 0x42000000;" \
+		"setenv kernelname Image.itb;" \
+		"run loadkernel;" \
+		"run kernel_args;" \
+		"bootm ${kerneladdr}#${board_name}\0" \
+	"boot_uimg=" \
+		"setenv kerneladdr 0x40007FC0;" \
+		"setenv kernelname uImage;" \
+		"run check_dtb;" \
+		"run check_ramdisk;" \
+		"run loadkernel;" \
+		"run kernel_args;" \
+		"bootm ${kerneladdr} ${initrd_addr} ${fdt_addr};\0" \
+	"boot_zimg=" \
+		"setenv kerneladdr 0x40007FC0;" \
+		"setenv kernelname zImage;" \
+		"run check_dtb;" \
+		"run check_ramdisk;" \
+		"run loadkernel;" \
+		"run kernel_args;" \
+		"bootz ${kerneladdr} ${initrd_addr} ${fdt_addr};\0" \
+	"autoboot=" \
+		"if test -e mmc ${mmcdev}:${mmcbootpart} Image.itb; then; " \
+			"run boot_fit;" \
+		"elif test -e mmc ${mmcdev}:${mmcbootpart} zImage; then; " \
+			"run boot_zimg;" \
+		"elif test -e mmc ${mmcdev}:${mmcbootpart} uImage; then; " \
+			"run boot_uimg;" \
+		"fi;\0"
+
 #endif	/* __CONFIG_EXYNOS4_COMMON_H */