board:samsung:trats/trats2: enable boot with appended and separated DTB

This patch modifies envs to enable dual kernel boot
 - with separated DTB if the DTB file is loaded successfully;
 - with DTB apppended to uImage if DTB file is not found;
This is neccesssary for backward compatibilty.
Signed-off-by: NPiotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

include/configs/trats.h

@@ -159,7 +159,11 @@
 
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"bootk=" \
-		"run loaddtb; run loaduimage; bootm 0x40007FC0 - ${fdtaddr}\0" \
+		"run loaduimage;" \
+		"if run loaddtb; then " \
+			"bootm 0x40007FC0 - ${fdtaddr};" \
+		"fi;" \
+		"bootm 0x40007FC0;\0" \
 	"updatemmc=" \
 		"mmc boot 0 1 1 1; mmc write 0 0x42008000 0 0x200;" \
 		"mmc boot 0 1 1 0\0" \
@@ -182,7 +186,7 @@
 	"mmcboot=" \
 		"setenv bootargs root=/dev/mmcblk${mmcdev}p${mmcrootpart} " \
 		"${lpj} rootwait ${console} ${meminfo} ${opts} ${lcdinfo}; " \
-		"run loaddtb; run loaduimage; bootm 0x40007FC0 - ${fdtaddr}\0" \
+		"run bootk\0" \
 	"bootchart=setenv opts init=/sbin/bootchartd; run bootcmd\0" \
 	"boottrace=setenv opts initcall_debug; run bootcmd\0" \
 	"mmcoops=mmc read 0 0x40000000 0x40 8; md 0x40000000 0x400\0" \
@@ -221,7 +225,6 @@
 		   "setenv spl_imgaddr;" \
 		   "setenv spl_addr_tmp;\0" \
 	"fdtaddr=40800000\0" \
-	"fdtfile=exynos4210-trats.dtb\0"
 
 
 /* Miscellaneous configurable options */

include/configs/trats2.h

@@ -186,7 +186,11 @@
 
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"bootk=" \
-		"run loaddtb; run loaduimage; bootm 0x40007FC0 - ${fdtaddr}\0" \
+		"run loaduimage;" \
+		"if run loaddtb; then " \
+			"bootm 0x40007FC0 - ${fdtaddr};" \
+		"fi;" \
+		"bootm 0x40007FC0;\0" \
 	"updatemmc=" \
 		"mmc boot 0 1 1 1; mmc write 0x42008000 0 0x200;" \
 		"mmc boot 0 1 1 0\0" \
@@ -200,7 +204,7 @@
 	"mmcboot=" \
 		"setenv bootargs root=/dev/mmcblk${mmcdev}p${mmcrootpart} " \
 		"${lpj} rootwait ${console} ${meminfo} ${opts} ${lcdinfo}; " \
-		"run loaddtb; run loaduimage; bootm 0x40007FC0 - ${fdtaddr}\0" \
+		"run bootk\0" \
 	"bootchart=set opts init=/sbin/bootchartd; run bootcmd\0" \
 	"boottrace=setenv opts initcall_debug; run bootcmd\0" \
 	"verify=n\0" \
@@ -241,7 +245,6 @@
 		   "setenv spl_imgaddr;" \
 		   "setenv spl_addr_tmp;\0" \
 	"fdtaddr=40800000\0" \
-	"fdtfile=exynos4412-trats2.dtb\0"
 
 /*
  * Miscellaneous configurable options