diff -Nur u-boot-2016.01.orig/include/configs/ti_omap4_common.h u-boot-2016.01/include/configs/ti_omap4_common.h
--- u-boot-2016.01.orig/include/configs/ti_omap4_common.h	2016-01-12 11:06:54.000000000 -0300
+++ u-boot-2016.01/include/configs/ti_omap4_common.h	2016-02-24 23:19:09.761629260 -0300
@@ -46,7 +46,6 @@
  * the timings to use or use pre-determined timings (based on using the
  * dynamic method.  Default to the static timing infomation.
  */
-#define CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
 #ifndef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
 #define CONFIG_SYS_AUTOMATIC_SDRAM_DETECTION
 #define CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
@@ -79,33 +78,74 @@
 #define CONFIG_USB_TTY			1
 #define CONFIG_SYS_CONSOLE_IS_IN_ENV	1
 
+/* Parabola GNU/Linux-libre extras */
+#define CONFIG_IDENT_STRING " Parabola GNU/Linux-libre"
+
+/* Enable Extlinux boot support */
+#define CONFIG_CMD_PXE
+#define CONFIG_MENU
+#define BOOT_TARGET_DEVICES(func)
+#include <config_distro_bootcmd.h>
+
 /*
  * Environment setup
  */
 #define CONFIG_EXTRA_ENV_SETTINGS \
+	BOOTENV \
 	DEFAULT_LINUX_BOOT_ENV \
 	DEFAULT_MMC_TI_ARGS \
 	"console=ttyO2,115200n8\0" \
 	"fdtfile=undefined\0" \
 	"bootpart=0:2\0" \
 	"bootdir=/boot\0" \
+	"fdtdir=/boot/dtbs\0" \
 	"bootfile=zImage\0" \
+	"rdfile=initramfs-linux.img\0" \
 	"usbtty=cdc_acm\0" \
 	"vram=16M\0" \
-	"loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr\0" \
-	"bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
-		"source ${loadaddr}\0" \
-	"loadbootenv=load mmc ${mmcdev} ${loadaddr} uEnv.txt\0" \
-	"importbootenv=echo Importing environment from mmc${mmcdev} ...; " \
-		"env import -t ${loadaddr} ${filesize}\0" \
-	"loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
-	"loaduimage=load mmc ${mmcdev} ${loadaddr} uImage\0" \
-	"mmcboot=echo Booting from mmc${mmcdev} ...; " \
-		"run args_mmc; " \
-		"bootz ${loadaddr} - ${fdtaddr}\0" \
-	"uimageboot=echo Booting from mmc${mmcdev} ...; " \
-		"run args_mmc; " \
-		"bootm ${loadaddr}\0" \
+	"optargs=\0" \
+	"mmcargs=setenv bootargs console=${console} " \
+		"vram=${vram} " \
+		"root=${root} " \
+		"${optargs}\0" \
+	"loadimage=load ${devtype} ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
+	"loadrd=load ${devtype} ${bootpart} ${rdaddr} ${bootdir}/${rdfile}\0" \
+	"loadfdt=echo loading ${fdtdir}/${fdtfile} ...; load ${devtype} ${bootpart} ${fdtaddr} ${fdtdir}/${fdtfile}\0" \
+	"mmcboot=usb start;" \
+		"for devtype in mmc usb; do " \
+			"setenv devnum 0;" \
+			"while ${devtype} dev ${devnum}; do " \
+				"echo ${devtype} found on device ${devnum};" \
+				"setenv bootpart ${devnum}:1;" \
+				"part uuid ${devtype} ${bootpart} uuid;" \
+				"setenv root PARTUUID=${uuid} rw rootwait;" \
+				"echo Checking for: ${bootdir}/uEnv.txt ...;" \
+				"if test -e ${devtype} ${bootpart} ${bootdir}/uEnv.txt; then " \
+					"load ${devtype} ${bootpart} ${loadaddr} ${bootdir}/uEnv.txt;" \
+					"env import -t ${loadaddr} ${filesize};" \
+					"echo Loaded environment from ${bootdir}/uEnv.txt;" \
+					"echo Checking if uenvcmd is set ...;" \
+					"if test -n ${uenvcmd}; then " \
+						"echo Running uenvcmd ...;" \
+						"run uenvcmd;" \
+					"fi;" \
+				"fi;" \
+				"run scan_dev_for_boot;" \
+				"if run loadimage; then " \
+					"run mmcargs;" \
+					"if run loadfdt; then " \
+						"if run loadrd; then " \
+							"bootz ${loadaddr} ${rdaddr}:${filesize} ${fdtaddr};" \
+						"else " \
+							"bootz ${loadaddr} - ${fdtaddr};" \
+						"fi;" \
+					"fi;" \
+				"else " \
+					"echo No kernel found;" \
+				"fi;" \
+				"setexpr devnum ${devnum} + 1;" \
+			"done;" \
+		"done;\0" \
 	"findfdt="\
 		"if test $board_name = sdp4430; then " \
 			"setenv fdtfile omap4-sdp.dtb; fi; " \
@@ -118,32 +158,11 @@
 		"if test $board_name = duovero; then " \
 			"setenv fdtfile omap4-duovero-parlor.dtb; fi;" \
 		"if test $fdtfile = undefined; then " \
-			"echo WARNING: Could not determine device tree to use; fi; \0" \
-	"loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
+			"echo WARNING: Could not determine device tree to use; fi; \0"
 
 #define CONFIG_BOOTCOMMAND \
 	"run findfdt; " \
-	"mmc dev ${mmcdev}; if mmc rescan; then " \
-		"echo SD/MMC found on device ${mmcdev};" \
-		"if run loadbootscript; then " \
-			"run bootscript; " \
-		"else " \
-			"if run loadbootenv; then " \
-				"run importbootenv; " \
-			"fi;" \
-			"if test -n ${uenvcmd}; then " \
-				"echo Running uenvcmd ...;" \
-				"run uenvcmd;" \
-			"fi;" \
-		"fi;" \
-		"if run loadimage; then " \
-			"run loadfdt;" \
-			"run mmcboot; " \
-		"fi; " \
-		"if run loaduimage; then " \
-			"run uimageboot;" \
-		"fi; " \
-	"fi"
+	"run mmcboot"
 
 /*
  * Defines for SPL