ORIGEN: Enhance origen config to be more flexible on boot.

This patch enhances the boot of origen board by adding support to ext2, bootz, initrd, bootenv loading and boot script.
It still keeps the previous mmc load command if boot script fails.

Signed-off-by: Guillaume GARDET <guillaume.gardet@free.fr>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

include/configs/origen.h

@@ -56,6 +56,10 @@
 #undef CONFIG_CMD_PING
 #define CONFIG_CMD_ELF
 #define CONFIG_CMD_DHCP
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_FS_GENERIC
+#define CONFIG_CMD_BOOTZ
+#define CONFIG_SUPPORT_RAW_INITRD
 #undef CONFIG_CMD_NET
 #undef CONFIG_CMD_NFS
 
@@ -63,7 +67,36 @@
 #define COPY_BL2_FNPTR_ADDR	0x02020030
 #define CONFIG_SPL_TEXT_BASE	0x02021410
 
-#define CONFIG_BOOTCOMMAND	"fatload mmc 0 40007000 uImage; bootm 40007000"
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"loadaddr=0x40007000\0" \
+	"rdaddr=0x48000000\0" \
+	"kerneladdr=0x40007000\0" \
+	"ramdiskaddr=0x48000000\0" \
+	"console=ttySAC2,115200n8\0" \
+	"mmcdev=0\0" \
+	"bootenv=uEnv.txt\0" \
+	"loadbootenv=load mmc ${mmcdev} ${loadaddr} ${bootenv}\0" \
+	"importbootenv=echo Importing environment from mmc ...; " \
+		"env import -t $loadaddr $filesize\0" \
+        "loadbootscript=load mmc ${mmcdev} ${loadaddr} boot.scr\0" \
+        "bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
+                "source ${loadaddr}\0"
+#define CONFIG_BOOTCOMMAND \
+	"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 loadbootscript; then " \
+			"run bootscript; " \
+		"fi; " \
+	"fi;" \
+	"load mmc ${mmcdev} ${loadaddr} uImage; bootm ${loadaddr} "
 
 #define CONFIG_IDENT_STRING		" for ORIGEN"