ARM: AM43xx: Add extra ENV settings

Add Extra env settings.
This is derived from am335x Extra ENV settings.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

include/configs/am43xx_evm.h

@@ -72,4 +72,67 @@
 #define CONFIG_OMAP_USB_PHY
 #define CONFIG_AM437X_USB2PHY2_HOST
 
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"loadaddr=0x80200000\0" \
+	"fdtaddr=0x80F80000\0" \
+	"fdt_high=0xffffffff\0" \
+	"rdaddr=0x81000000\0" \
+	"fdtfile=undefined\0" \
+	"bootpart=0:2\0" \
+	"bootdir=/boot\0" \
+	"bootfile=zImage\0" \
+	"console=ttyO0,115200n8\0" \
+	"optargs=\0" \
+	"mmcdev=0\0" \
+	"mmcroot=/dev/mmcblk0p2 rw\0" \
+	"mmcrootfstype=ext4 rootwait\0" \
+	"ramroot=/dev/ram0 rw ramdisk_size=65536 initrd=${rdaddr},64M\0" \
+	"ramrootfstype=ext2\0" \
+	"mmcargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${mmcroot} " \
+		"rootfstype=${mmcrootfstype}\0" \
+	"bootenv=uEnv.txt\0" \
+	"loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
+	"importbootenv=echo Importing environment from mmc ...; " \
+		"env import -t $loadaddr $filesize\0" \
+	"ramargs=setenv bootargs console=${console} " \
+		"${optargs} " \
+		"root=${ramroot} " \
+		"rootfstype=${ramrootfstype}\0" \
+	"loadramdisk=load mmc ${mmcdev} ${rdaddr} ramdisk.gz\0" \
+	"loadimage=load mmc ${bootpart} ${loadaddr} ${bootdir}/${bootfile}\0" \
+	"loadfdt=load mmc ${bootpart} ${fdtaddr} ${bootdir}/${fdtfile}\0" \
+	"mmcboot=mmc dev ${mmcdev}; " \
+		"if mmc rescan; then " \
+			"echo SD/MMC found on device ${mmcdev};" \
+			"if run loadbootenv; then " \
+				"echo Loaded environment from ${bootenv};" \
+				"run importbootenv;" \
+			"fi;" \
+			"if test -n $uenvcmd; then " \
+				"echo Running uenvcmd ...;" \
+				"run uenvcmd;" \
+			"fi;" \
+			"if run loadimage; then " \
+				"run loadfdt; " \
+				"echo Booting from mmc${mmcdev} ...; " \
+				"run mmcargs; " \
+				"bootz ${loadaddr} - ${fdtaddr}; " \
+			"fi;" \
+		"fi;\0" \
+	"findfdt="\
+		"if test $board_name = AM43EPOS; then " \
+			"setenv fdtfile am43x-epos-evm.dtb; fi; " \
+		"if test $board_name = AM43__GP; then " \
+			"setenv fdtfile am43x-gp-evm.dtb; fi; " \
+		"if test $fdtfile = undefined; then " \
+			"echo WARNING: Could not determine device tree; fi; \0"
+
+#define CONFIG_BOOTCOMMAND \
+	"run findfdt; " \
+	"run mmcboot;"
+
+#endif
 #endif	/* __CONFIG_AM43XX_EVM_H */