tmp: unlock and nandboot command

u-boot-tree/drivers/mtd/nand/zynq_nand.c

@@ -152,6 +152,9 @@ static const struct zynq_nand_command_format zynq_nand_commands[] = {
 	{NAND_CMD_PARAM, NAND_CMD_NONE, 1, NAND_CMD_NONE},
 	{NAND_CMD_GET_FEATURES, NAND_CMD_NONE, 1, NAND_CMD_NONE},
 	{NAND_CMD_SET_FEATURES, NAND_CMD_NONE, 1, NAND_CMD_NONE},
+	{NAND_CMD_UNLOCK1, NAND_CMD_NONE, 3, NAND_CMD_NONE},
+	{NAND_CMD_UNLOCK2, NAND_CMD_NONE, 3, NAND_CMD_NONE},
+	{NAND_CMD_LOCK, NAND_CMD_NONE, 0, NAND_CMD_NONE},
 	{NAND_CMD_NONE, NAND_CMD_NONE, 0, 0},
 	/* Add all the flash commands supported by the flash device and Linux
 	 * The cache program command is not supported by driver because driver

u-boot-tree/include/configs/elphel393.h

@@ -155,9 +155,8 @@
 	"nandboot=echo Copying Linux from NAND flash to RAM... && " \
 		"nand read 0x4F00000 0x600000 ${kernel_size} && " \
 		"nand read 0x4E00000 0x500000 ${devicetree_size} && " \
-		"echo Copying ramdisk... && " \
-		"nand read 0x2000000 0x1600000 ${ramdisk_size} && " \
-		"bootm 0x4F00000 0x2000000 0x4E00000\0" \
+		"nand unlock 0x1600000 0x10000000 && "\
+		"bootm 0x4F00000 - 0x4E00000\0" \
 	"jtagboot=echo TFTPing Linux to RAM... && " \
 		"tftpboot 0x3000000 ${kernel_image} && " \
 		"tftpboot 0x2A00000 ${devicetree_image} && " \