[U-Boot,V2] imx: nitrogen6x: Convert Sabrelite to distro boot support

diff --git a/configs/mx6qsabrelite_defconfig b/configs/mx6qsabrelite_defconfig
index 7499704058..c644754929 100644
--- a/configs/mx6qsabrelite_defconfig
+++ b/configs/mx6qsabrelite_defconfig
@@ -3,17 +3,15 @@  CONFIG_ARCH_MX6=y
 CONFIG_SYS_TEXT_BASE=0x17800000
 CONFIG_TARGET_NITROGEN6X=y
 CONFIG_CMD_HDMIDETECT=y
+CONFIG_DISTRO_DEFAULTS=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/boundary/nitrogen6x/nitrogen6q.cfg,MX6Q,DDR_MB=1024,SABRELITE"
 CONFIG_BOOTDELAY=3
+# CONFIG_USE_BOOTCOMMAND is not set
 CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE=y
-CONFIG_SUPPORT_RAW_INITRD=y
 CONFIG_BOARD_EARLY_INIT_F=y
-CONFIG_HUSH_PARSER=y
 CONFIG_FASTBOOT=y
 CONFIG_FASTBOOT_BUF_ADDR=0x12000000
-CONFIG_CMD_BOOTZ=y
 CONFIG_CMD_MEMTEST=y
-CONFIG_SYS_ALT_MEMTEST=y
 # CONFIG_CMD_FLASH is not set
 CONFIG_CMD_GPIO=y
 CONFIG_CMD_I2C=y
@@ -22,21 +20,15 @@  CONFIG_CMD_SATA=y
 CONFIG_CMD_SF=y
 CONFIG_CMD_USB=y
 CONFIG_CMD_USB_MASS_STORAGE=y
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
 CONFIG_CMD_BMP=y
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_TIME=y
-CONFIG_CMD_EXT2=y
-CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
-CONFIG_CMD_FAT=y
-CONFIG_CMD_FS_GENERIC=y
+# CONFIG_ISO_PARTITION is not set
+# CONFIG_EFI_PARTITION is not set
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_DM=y
 CONFIG_DWC_AHSATA=y
-CONFIG_FSL_ESDHC=y
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_SST=y
 CONFIG_PHYLIB=y
diff --git a/include/configs/nitrogen6x.h b/include/configs/nitrogen6x.h
index 7d2cf0bd8c..3161b1dd79 100644
--- a/include/configs/nitrogen6x.h
+++ b/include/configs/nitrogen6x.h
@@ -102,82 +102,32 @@ 
 #define CONFIG_UMSDEVS CONFIG_DRIVE_SATA CONFIG_DRIVE_MMC
 
 #if defined(CONFIG_SABRELITE)
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+	func(MMC, mmc, 1) \
+	func(SATA, sata, 0) \
+	func(USB, usb, 0) \
+	func(PXE, pxe, na) \
+	func(DHCP, dhcp, na)
+
+#include <config_distro_bootcmd.h>
+
 #define CONFIG_EXTRA_ENV_SETTINGS \
-	"script=boot.scr\0" \
-	"uimage=uImage\0" \
 	"console=ttymxc1\0" \
 	"fdt_high=0xffffffff\0" \
 	"initrd_high=0xffffffff\0" \
-	"fdt_file=imx6q-sabrelite.dtb\0" \
+	"fdtfile=imx6q-sabrelite.dtb\0" \
 	"fdt_addr=0x18000000\0" \
-	"boot_fdt=try\0" \
+	"fdt_addr_r=0x18000000\0" \
+	"kernel_addr_r=" __stringify(CONFIG_LOADADDR) "\0"  \
+	"pxefile_addr_r=" __stringify(CONFIG_LOADADDR) "\0" \
+	"scriptaddr=" __stringify(CONFIG_LOADADDR) "\0" \
+	"ramdisk_addr_r=0x13000000\0" \
+	"ramdiskaddr=0x13000000\0" \
 	"ip_dyn=yes\0" \
 	"usb_pgood_delay=2000\0" \
-	"mmcdevs=0 1\0" \
-	"mmcpart=1\0" \
-	"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
-	"mmcargs=setenv bootargs console=${console},${baudrate} " \
-		"root=${mmcroot}\0" \
-	"loadbootscript=" \
-		"load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${script};\0" \
-	"bootscript=echo Running bootscript from mmc ...; " \
-		"source\0" \
-	"loaduimage=load mmc ${mmcdev}:${mmcpart} ${loadaddr} ${uimage}\0" \
-	"loadfdt=load mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}\0" \
-	"mmcboot=echo Booting from mmc ...; " \
-		"run mmcargs; " \
-		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
-			"if run loadfdt; then " \
-				"bootm ${loadaddr} - ${fdt_addr}; " \
-			"else " \
-				"if test ${boot_fdt} = try; then " \
-					"bootm; " \
-				"else " \
-					"echo WARN: Cannot load the DT; " \
-				"fi; " \
-			"fi; " \
-		"else " \
-			"bootm; " \
-		"fi;\0" \
-	"netargs=setenv bootargs console=${console},${baudrate} " \
-		"root=/dev/nfs " \
-	"ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp\0" \
-		"netboot=echo Booting from net ...; " \
-		"run netargs; " \
-		"if test ${ip_dyn} = yes; then " \
-			"setenv get_cmd dhcp; " \
-		"else " \
-			"setenv get_cmd tftp; " \
-		"fi; " \
-		"${get_cmd} ${uimage}; " \
-		"if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \
-			"if ${get_cmd} ${fdt_addr} ${fdt_file}; then " \
-				"bootm ${loadaddr} - ${fdt_addr}; " \
-			"else " \
-				"if test ${boot_fdt} = try; then " \
-					"bootm; " \
-				"else " \
-					"echo WARN: Cannot load the DT; " \
-				"fi; " \
-			"fi; " \
-		"else " \
-			"bootm; " \
-		"fi;\0"
+	BOOTENV
 
-#define CONFIG_BOOTCOMMAND \
-	"for mmcdev in ${mmcdevs}; do " \
-		"mmc dev ${mmcdev}; " \
-		"if mmc rescan; then " \
-			"if run loadbootscript; then " \
-				"run bootscript; " \
-			"else " \
-				"if run loaduimage; then " \
-					"run mmcboot; " \
-				"fi; " \
-			"fi; " \
-		"fi; " \
-	"done; " \
-	"run netboot; "
 #else
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"bootdevs=" CONFIG_DRIVE_TYPES "\0" \