Add distro bootcommand to beagle bone and related boards

index 3a360ca4..d2f49a1 100644
@@ -191,11 +191,12 @@
 	BOOTENV_BOOT_TARGETS \
 	\
 	"boot_extlinux="                                                  \
-		"sysboot ${devtype} ${devnum}:${bootpart} any "           \
+		"sysboot ${devtype} ${devnum}:${distro_bootpart} any "    \
 			"${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \
 	\
 	"scan_dev_for_extlinux="                                          \
-		"if test -e ${devtype} ${devnum}:${bootpart} "            \
+		"if test -e ${devtype} "                                  \
+				"${devnum}:${distro_bootpart} "           \
 				"${prefix}extlinux/extlinux.conf; then "  \
 			"echo Found ${prefix}extlinux/extlinux.conf; "    \
 			"run boot_extlinux; "                             \

@@ -203,13 +204,14 @@
 		"fi\0"                                                    \
 	\
 	"boot_a_script="                                                  \
-		"load ${devtype} ${devnum}:${bootpart} "                  \
+		"load ${devtype} ${devnum}:${distro_bootpart} "           \
 			"${scriptaddr} ${prefix}${script}; "              \
 		"source ${scriptaddr}\0"                                  \
 	\
 	"scan_dev_for_scripts="                                           \
 		"for script in ${boot_scripts}; do "                      \
-			"if test -e ${devtype} ${devnum}:${bootpart} "    \
+			"if test -e ${devtype} "                          \
+					"${devnum}:${distro_bootpart} "   \
 					"${prefix}${script}; then "       \
 				"echo Found U-Boot script "               \
 					"${prefix}${script}; "            \

@@ -219,7 +221,8 @@
 		"done\0"                                                  \
 	\
 	"scan_dev_for_boot="                                              \
-		"echo Scanning ${devtype} ${devnum}:${bootpart}...; "     \
+		"echo Scanning ${devtype} "                               \
+				"${devnum}:${distro_bootpart}...; "       \
 		"for prefix in ${boot_prefixes}; do "                     \
 			"run scan_dev_for_extlinux; "                     \
 			"run scan_dev_for_scripts; "                      \

@@ -228,8 +231,9 @@
 	"scan_dev_for_boot_part="                                         \
 		"part list ${devtype} ${devnum} -bootable devplist; "     \
 		"env exists devplist || setenv devplist 1; "              \
-		"for bootpart in ${devplist}; do "                        \
-			"if fstype ${devtype} ${devnum}:${bootpart} "     \
+		"for distro_bootpart in ${devplist}; do "                 \
+			"if fstype ${devtype} "                           \
+					"${devnum}:${distro_bootpart} "   \
 					"bootfstype; then "               \
 				"run scan_dev_for_boot; "                 \
 			"fi; "                                            \

index 18fca02..bcce2d7 100644
@@ -56,6 +56,8 @@
 	"fdt_addr_r=0x88000000\0" \
 	"rdaddr=0x88080000\0" \
 	"ramdisk_addr_r=0x88080000\0" \
+	"scriptaddr=0x80000000\0" \
+	"pxefile_addr_r=0x80100000\0" \
 	"bootm_size=0x10000000\0"
 
 /*

index e89c49e..ca60486 100644
@@ -18,6 +18,10 @@
 
 #include <configs/ti_am335x_common.h>
 
+/* Don't override the distro default bootdelay */
+#undef CONFIG_BOOTDELAY
+#include <config_distro_defaults.h>
+
 #ifndef CONFIG_SPL_BUILD
 #ifndef CONFIG_FIT
 # define CONFIG_FIT

@@ -67,6 +71,37 @@
 
 #define CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 
+#define BOOTENV_DEV_LEGACY_MMC(devtypeu, devtypel, instance) \
+	"bootcmd_" #devtypel #instance "=" \
+	"setenv mmcdev " #instance"; "\
+	"setenv bootpart " #instance":2 ; "\
+	"run mmcboot\0"
+
+#define BOOTENV_DEV_NAME_LEGACY_MMC(devtypeu, devtypel, instance) \
+	#devtypel #instance " "
+
+#define BOOTENV_DEV_NAND(devtypeu, devtypel, instance) \
+	"bootcmd_" #devtypel "=" \
+	"run nandboot\0"
+
+#define BOOTENV_DEV_NAME_NAND(devtypeu, devtypel, instance) \
+	#devtypel #instance " "
+
+#define BOOT_TARGET_DEVICES(func) \
+	func(MMC, mmc, 0) \
+	func(LEGACY_MMC, legacy_mmc, 0) \
+	func(MMC, mmc, 1) \
+	func(LEGACY_MMC, legacy_mmc, 1) \
+	func(NAND, nand, 0) \
+	func(PXE, pxe, na) \
+	func(DHCP, dhcp, na)
+
+#define CONFIG_BOOTCOMMAND \
+	"run findfdt; " \
+	"run distro_bootcmd"
+
+#include <config_distro_bootcmd.h>
+
 #ifndef CONFIG_SPL_BUILD
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	DEFAULT_LINUX_BOOT_ENV \

@@ -166,16 +201,10 @@
 			"echo WARNING: Could not determine device tree to use; fi; \0" \
 	NANDARGS \
 	NETARGS \
-	DFUARGS
+	DFUARGS \
+	BOOTENV
 #endif
 
-#define CONFIG_BOOTCOMMAND \
-	"run findfdt; " \
-	"run mmcboot;" \
-	"setenv mmcdev 1; " \
-	"setenv bootpart 1:2; " \
-	"run mmcboot;" \
-	"run nandboot;"
 
 /* NS16550 Configuration */
 #define CONFIG_SYS_NS16550_COM1		0x44e09000	/* Base EVM has UART0 */