ARM: omap3_logic: Unlock NAND automatically in U-Boot

The Micron Flash is locked by default.  This will automaticlly
unlock so manually unlocking is unnecessary in U-Boot.

Signed-off-by: Adam Ford <aford173@gmail.com>

board/logicpd/omap3som/omap3logic.c

@@ -207,6 +207,16 @@ int board_init(void)
 }
 
 #ifdef CONFIG_BOARD_LATE_INIT
+
+static void unlock_nand(void)
+{
+	int dev = nand_curr_device;
+	struct mtd_info *mtd;
+
+	mtd = get_nand_dev_by_index(dev);
+	nand_unlock(mtd, 0, mtd->size, 0);
+}
+
 int board_late_init(void)
 {
 	struct board_id *board;
@@ -256,6 +266,10 @@ int board_late_init(void)
 
 	/* restore hsusb0_data5 pin as hsusb0_data5 */
 	MUX_VAL(CP(HSUSB0_DATA5),	(IEN  | PTD | DIS | M0));
+
+#ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
+	unlock_nand();
+#endif
 	return 0;
 }
 #endif

include/configs/omap3_logic.h

@@ -93,7 +93,6 @@
 
 #define CONFIG_PREBOOT \
 	"setenv preboot;"						\
-	"nand unlock;"							\
 	"saveenv;"
 
 #define CONFIG_EXTRA_ENV_SETTINGS \
@@ -192,7 +191,6 @@
 		"tftpboot $loadaddr zImage;" \
 		"bootz $loadaddr\0" \
 	"nandbootcommon=echo 'Booting kernel from NAND...';" \
-		"nand unlock;" \
 		"run nandargs;" \
 		"run common_bootargs;" \
 		"run dump_bootargs;" \