omap: switch from uEnv.txt to generic distro booting

Which makes supporting different boot devices easy.

Signed-off-by: Andre Heider <a.heider@gmail.com>

package/boot/uboot-omap/Makefile

@@ -19,7 +19,6 @@ include $(INCLUDE_DIR)/package.mk
 define U-Boot/Default
   BUILD_TARGET:=omap
   UBOOT_IMAGE:=u-boot.img MLO
-  UENV:=default
 endef
 
 define U-Boot/omap4_panda
@@ -51,7 +50,8 @@ define Build/InstallDev
 		$(CP) $(patsubst %,$(PKG_BUILD_DIR)/%,$(UBOOT_IMAGE)) $(STAGING_DIR_IMAGE)/$(device)/
 	)
 	$(foreach device,$(BUILD_DEVICES), \
-		$(CP) ./files/uEnv-$(UENV).txt $(STAGING_DIR_IMAGE)/$(device)/uEnv.txt
+		mkimage -C none -A arm -T script -d ./files/boot.scr.txt \
+			$(STAGING_DIR_IMAGE)/$(device)/boot.scr
 	)
 endef
 

package/boot/uboot-omap/files/boot.scr.txt

@@ -0,0 +1,5 @@
+setenv bootargs console=${console} root=/dev/mmcblk0p2 rootwait
+
+load mmc 0:1 ${loadaddr} /zImage \
+&& load mmc 0:1 ${fdtaddr} /dtbs/${fdtfile} \
+&& bootz ${loadaddr} - ${fdtaddr}

package/boot/uboot-omap/files/uEnv-default.txt

@@ -1,8 +0,0 @@
-bootpart=0:1
-bootdir=/
-bootfile=zImage
-fdtdir=/dtbs
-uenvcmd=run loadfdt; run loadimage; run uenvbootargs ; bootz ${loadaddr} - ${fdtaddr}
-loadfdt=load mmc ${bootpart} ${fdtaddr} ${fdtdir}/${fdtfile}
-devtype=mmc
-uenvbootargs=setenv bootargs console=${console} root=/dev/mmcblk0p2 rootwait

target/linux/omap/image/Makefile

@@ -19,7 +19,7 @@ define Build/omap-sdcard
 
 	mcopy -i $@.boot $(STAGING_DIR_IMAGE)/$(DEVICE_NAME)/MLO ::MLO
 	mcopy -i $@.boot $(STAGING_DIR_IMAGE)/$(DEVICE_NAME)/u-boot.img ::u-boot.img
-	mcopy -i $@.boot $(STAGING_DIR_IMAGE)/$(DEVICE_NAME)/uEnv.txt ::uEnv.txt
+	mcopy -i $@.boot $(STAGING_DIR_IMAGE)/$(DEVICE_NAME)/boot.scr ::boot.scr
 	mmd -i $@.boot ::/dtbs
 	mcopy -i $@.boot $(DTS_DIR)/$(DEVICE_DTS).dtb ::/dtbs/$(DEVICE_DTS).dtb
 	mcopy -i $@.boot $(IMAGE_KERNEL) ::/zImage