rockchip: block: add rkmtd class and drivers

Add rkmtd class and drivers to create a virtual block device
to transfer Rockchip boot block data to and from NAND with
block orientated tools like "ums" and "rockusb".

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

4 files changed, 1352 insertions, 0 deletions

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 1abea3f..048a6ca 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -262,3 +262,10 @@ config SYS_64BIT_LBA
 	help
 	  Make the block subsystem use 64bit sector addresses, rather than the
 	  default of 32bit.
+
+config RKMTD
+	bool "Rockchip rkmtd virtual block device"
+	help
+	  Enable "rkmtd" class and driver to create a virtual block device
+	  to transfer Rockchip boot block data to and from NAND with block
+	  orientate tools like "ums" and "rockusb".
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index a161d14..fdcba5c 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -11,6 +11,7 @@ endif
 
 ifndef CONFIG_SPL_BUILD
 obj-$(CONFIG_IDE) += ide.o
+obj-$(CONFIG_RKMTD) += rkmtd.o
 endif
 obj-$(CONFIG_SANDBOX) += sandbox.o host-uclass.o host_dev.o
 obj-$(CONFIG_$(SPL_TPL_)BLOCK_CACHE) += blkcache.o
@@ -19,3 +20,4 @@ obj-$(CONFIG_BLKMAP) += blkmap.o
 obj-$(CONFIG_EFI_MEDIA) += efi-media-uclass.o
 obj-$(CONFIG_EFI_MEDIA_SANDBOX) += sb_efi_media.o
 obj-$(CONFIG_EFI_MEDIA_BLK) += efi_blk.o
+
diff --git a/drivers/block/rkmtd.c b/drivers/block/rkmtd.c
new file mode 100644
index 0000000..c55f052
--- /dev/null
+++ b/drivers/block/rkmtd.c
@@ -0,0 +1,1152 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Some functions are derived from:
+ * https://github.com/rockchip-linux/u-boot/blob/next-dev/drivers/rknand/rk_ftl_arm_v7.S
+ * Copyright (c) 2016-2018, Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * Driver interface derived from:
+ * /drivers/block/host_dev.c
+ * /drivers/block/host-uclass.c
+ * Copyright 2022 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * Copyright (C) 2023 Johan Jonker <jbx6244@gmail.com>
+ */
+
+#include <blk.h>
+#include <dm.h>
+#include <nand.h>
+#include <part.h>
+#include <rkmtd.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <dm/device-internal.h>
+#include <dm/devres.h>
+#include <dm/lists.h>
+#include <dm/root.h>
+#include <dm/uclass-internal.h>
+#include <linux/mtd/mtd.h>
+#if !IS_ENABLED(CONFIG_SANDBOX)
+#include <linux/mtd/rawnand.h>
+#endif
+#include <u-boot/crc.h>
+
+struct nand_para_info nand_para_tbl[] = {
+	{6, {0x2c, 0x64, 0x44, 0x4b, 0xa9, 0x00}, 4, 1, 16,  256, 2, 2, 2048, 0x01df,  3, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x44, 0x44, 0x4b, 0xa9, 0x00}, 4, 1, 16,  256, 2, 2, 1064, 0x01df,  3, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x68, 0x04, 0x4a, 0xa9, 0x00}, 4, 1,  8,  256, 2, 2, 2048, 0x011f,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x88, 0x04, 0x4b, 0xa9, 0x00}, 4, 1, 16,  256, 2, 2, 2048, 0x011f,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0xa8, 0x05, 0xcb, 0xa9, 0x00}, 4, 2, 16,  256, 2, 2, 2048, 0x011f,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x68, 0x04, 0x46, 0x89, 0x00}, 4, 1,  8,  256, 2, 2, 2048, 0x011f,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x48, 0x04, 0x4a, 0xa5, 0x00}, 4, 1,  8,  256, 2, 2, 1024, 0x011f,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x84, 0x64, 0x3c, 0xa5, 0x00}, 4, 1, 32,  512, 2, 2, 1024, 0x01df,  3, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x84, 0x64, 0x54, 0xa9, 0x00}, 4, 1, 32,  512, 2, 2, 1024, 0x01df,  4, 18, 60, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0xd7, 0x94, 0x3e, 0x84, 0x00}, 4, 1,  8,  128, 2, 2, 4096, 0x0117,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x48, 0x04, 0x46, 0x85, 0x00}, 4, 1,  8,  256, 2, 2, 1024, 0x011f,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x88, 0x05, 0xc6, 0x89, 0x00}, 4, 2,  8,  256, 2, 2, 2048, 0x011f,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x88, 0x24, 0x4b, 0xa9, 0x00}, 4, 1, 16,  256, 2, 2, 2048, 0x011f,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x68, 0x00, 0x27, 0xa9, 0x00}, 4, 1, 16,  128, 1, 2, 2048, 0x011f,  0,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x64, 0x64, 0x56, 0xa5, 0x00}, 4, 1, 24,  512, 2, 2,  700, 0x01df,  4, 18, 60, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0x84, 0xc5, 0x4b, 0xa9, 0x00}, 4, 2, 16,  256, 2, 2, 2048, 0x01df,  3, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0xd5, 0xd1, 0xa6, 0x68, 0x00}, 4, 2,  8,   64, 1, 2, 2048, 0x0117,  0,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0xdc, 0x90, 0xa6, 0x54, 0x00}, 4, 1,  8,   64, 1, 2, 1024, 0x0117,  0,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x64, 0x64, 0x54, 0xa4, 0x00}, 4, 1, 32,  512, 2, 1, 1024, 0x01df,  4, 18, 60, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x84, 0x44, 0x32, 0xaa, 0x00}, 4, 1, 32,  512, 2, 1, 2184, 0x05c7,  5, 19, 60, 32, 1, 0, 1, 0, 1, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x64, 0x44, 0x32, 0xa5, 0x00}, 4, 1, 32,  512, 2, 1, 1048, 0x05c7,  5, 19, 60, 32, 1, 0, 1, 0, 1, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x64, 0x64, 0x3c, 0xa5, 0x00}, 4, 1, 32,  512, 2, 1, 1044, 0x01df,  3, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x84, 0x44, 0x32, 0xaa, 0x00}, 4, 1, 32,  512, 2, 1, 2184, 0x05c7,  5, 19, 60, 32, 1, 0, 4, 0, 1, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x84, 0x44, 0x34, 0xaa, 0x00}, 4, 1, 32,  512, 2, 1, 2184, 0x05c7,  5, 19, 60, 32, 1, 0, 4, 0, 1, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x84, 0xc4, 0x34, 0xaa, 0x00}, 4, 1, 32,  512, 2, 1, 2184, 0x05c7,  5, 19, 60, 32, 1, 0, 1, 0, 1, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x84, 0x44, 0x34, 0xa4, 0x00}, 4, 1, 32,  512, 2, 1, 2184, 0x05c7,  5, 19, 60, 32, 1, 0, 1, 0, 1, {0, 0, 0, 0, 0}},
+	{5, {0x2c, 0x84, 0x64, 0x3c, 0xa9, 0x00}, 4, 1, 32,  512, 2, 2, 1024, 0x01df,  3, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x2c, 0xa4, 0x64, 0x32, 0xaa, 0x04}, 4, 1, 32, 1024, 2, 1, 2192, 0x05c7, 10, 19, 60, 32, 1, 0, 4, 0, 1, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xde, 0x94, 0xd2, 0x04, 0x43}, 2, 1, 16,  256, 2, 2, 2048, 0x01d9,  1,  1, 24, 32, 4, 0, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xd7, 0x94, 0xda, 0x74, 0xc3}, 2, 1, 16,  256, 2, 2, 1024, 0x01d9,  1,  2, 40, 32, 4, 0, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xd7, 0x94, 0x91, 0x60, 0x44}, 2, 1, 16,  256, 2, 2, 1046, 0x01d9,  1,  3, 40, 32, 4, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xde, 0x94, 0xda, 0x74, 0xc4}, 2, 1, 16,  256, 2, 2, 2090, 0x01d9,  1,  4, 40, 32, 4, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xde, 0x94, 0xeb, 0x74, 0x44}, 2, 1, 32,  256, 2, 2, 1066, 0x01d9,  1,  7, 40, 32, 4, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xd5, 0x94, 0xda, 0x74, 0xc4}, 2, 1, 16,  256, 2, 2,  530, 0x01d9,  1,  3, 40, 32, 4, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xd7, 0x94, 0x9a, 0x74, 0x42}, 2, 1, 16,  256, 2, 2, 1024, 0x0119,  1,  0, 24, 32, 4, 0, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xde, 0x14, 0xa7, 0x42, 0x4a}, 2, 1, 32,  256, 2, 2, 1060, 0x01d9,  2,  5, 40, 32, 4, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xd7, 0x14, 0x9e, 0x34, 0x4a}, 2, 1, 16,  256, 2, 2, 1056, 0x01d9,  2,  5, 40, 32, 4, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xde, 0x94, 0xa7, 0x42, 0x48}, 2, 1, 32,  256, 2, 2, 1060, 0x01d9,  2,  5, 40, 32, 4, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xde, 0x14, 0xab, 0x42, 0x4a}, 2, 1, 32,  256, 2, 2, 1056, 0x01d9,  2,  6, 40, 32, 3, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0x3a, 0x14, 0xab, 0x42, 0x4a}, 2, 1, 32,  256, 2, 2, 2092, 0x01d9,  2,  5, 40, 32, 3, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0xd5, 0x94, 0x9a, 0x74, 0x42}, 2, 1, 16,  256, 2, 1, 1024, 0x0111,  1,  0, 24, 32, 4, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xad, 0x3a, 0x14, 0x03, 0x08, 0x50}, 2, 1, 32,  388, 2, 2, 1362, 0x01d9,  9,  8, 40, 32, 3, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x89, 0x64, 0x44, 0x4b, 0xa9, 0x00}, 7, 1, 16,  256, 2, 2, 2048, 0x01df,  3, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x89, 0x88, 0x24, 0x4b, 0xa9, 0x84}, 7, 1, 16,  256, 2, 2, 2048, 0x01df,  3, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x89, 0x88, 0x24, 0x4b, 0xa9, 0x00}, 7, 1, 16,  256, 2, 2, 2048, 0x0117,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x89, 0x68, 0x24, 0x4a, 0xa9, 0x00}, 7, 1,  8,  256, 2, 2, 2048, 0x0117,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x89, 0x68, 0x04, 0x4a, 0xa9, 0x00}, 7, 1,  8,  256, 2, 2, 2048, 0x0117,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x89, 0xd7, 0x94, 0x3e, 0x84, 0x00}, 7, 1,  8,  256, 2, 2, 2048, 0x0117,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x89, 0x68, 0x04, 0x46, 0xa9, 0x00}, 7, 1,  8,  256, 2, 2, 2048, 0x0117,  1,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x89, 0x64, 0x64, 0x3c, 0xa1, 0x00}, 7, 1, 32,  512, 2, 1, 1024, 0x01c7,  4, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{5, {0x89, 0x84, 0x64, 0x3c, 0xa5, 0x00}, 7, 1, 32,  512, 2, 2, 1024, 0x01c7,  4, 17, 40, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x89, 0x88, 0x24, 0x3b, 0xa9, 0x00}, 7, 1, 16,  192, 2, 2, 2048, 0x0117, 12,  0, 24, 32, 1, 0, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xd7, 0x84, 0x93, 0x72, 0x57}, 1, 1, 32,  256, 2, 1, 1060, 0x05c1,  2, 33, 40, 32, 2, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xde, 0x84, 0x93, 0x72, 0x57}, 1, 1, 32,  256, 2, 1, 2092, 0x05c1,  2, 33, 40, 32, 2, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0x3a, 0x85, 0x93, 0x76, 0x57}, 1, 2, 32,  256, 2, 1, 2092, 0x05e1,  2, 33, 40, 32, 2, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xd5, 0x84, 0x32, 0x72, 0x56}, 1, 1, 16,  128, 2, 1, 2056, 0x05c1,  2, 33, 40, 32, 2, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xd7, 0x94, 0x32, 0x76, 0x56}, 1, 1, 16,  128, 2, 2, 2058, 0x05d1,  2, 33, 40, 32, 2, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xde, 0x94, 0x82, 0x76, 0x56}, 1, 1, 16,  256, 2, 2, 2062, 0x05d1,  1, 33, 40, 32, 2, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xde, 0x94, 0x93, 0x76, 0x50}, 1, 1, 32,  256, 2, 2, 1066, 0x05d9,  2, 34, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0x3a, 0x95, 0x93, 0x7a, 0x50}, 1, 2, 32,  256, 2, 2, 1066, 0x05d9,  2, 34, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xd7, 0x94, 0x32, 0x76, 0x55}, 1, 1, 16,  128, 2, 2, 2050, 0x0191,  2,  0, 24, 32, 1, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xde, 0x94, 0x93, 0x76, 0x57}, 1, 1, 32,  256, 2, 2, 1058, 0x05d9,  2, 33, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xd7, 0x84, 0x93, 0x72, 0x50}, 1, 1, 32,  256, 2, 1, 1060, 0x05c1,  2, 34, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xde, 0x94, 0x93, 0x76, 0x51}, 1, 1, 32,  256, 2, 2, 1074, 0x05d9,  2, 35, 40, 32, 3, 1, 4, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0x3a, 0x94, 0x93, 0x76, 0x51}, 1, 1, 32,  256, 2, 2, 2106, 0x05d9,  2, 35, 40, 32, 3, 1, 4, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xd7, 0x84, 0x93, 0x72, 0x51}, 1, 1, 32,  256, 2, 1, 1056, 0x05d9,  2, 35, 40, 32, 3, 1, 4, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x98, 0xde, 0x94, 0x93, 0x76, 0xd1}, 1, 1, 32,  256, 2, 2, 1074, 0x05d9,  2, 35, 40, 32, 3, 1, 4, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xde, 0x94, 0x93, 0x76, 0x57}, 8, 1, 32,  256, 2, 2, 1058, 0x05d9,  2, 66, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xd7, 0x84, 0x93, 0x72, 0x57}, 8, 1, 32,  256, 2, 1, 1060, 0x05c1,  2, 66, 40, 32, 2, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xde, 0xa4, 0x82, 0x76, 0x56}, 8, 1, 16,  256, 2, 2, 2082, 0x01d9,  1, 65, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xde, 0x94, 0x93, 0x76, 0x50}, 8, 1, 32,  256, 2, 2, 1066, 0x05d9,  2, 67, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xd7, 0x84, 0x93, 0x72, 0x50}, 8, 1, 32,  256, 2, 1, 1060, 0x05c1,  2, 67, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xde, 0xa4, 0x82, 0x76, 0xd7}, 8, 1, 16,  256, 2, 2, 2090, 0x04d9,  1, 66, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xde, 0x84, 0x93, 0x72, 0x57}, 8, 1, 32,  256, 2, 1, 2092, 0x05c1,  2, 66, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0x3a, 0x94, 0x93, 0x76, 0x51}, 8, 1, 32,  256, 2, 2, 2106, 0x01d9,  2, 68, 40, 32, 3, 1, 4, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xde, 0x94, 0x93, 0x76, 0x51}, 8, 1, 32,  256, 2, 2, 1074, 0x01d9,  2, 68, 40, 32, 3, 1, 4, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0x3a, 0xa4, 0x93, 0x7a, 0x50}, 8, 1, 32,  256, 2, 2, 2138, 0x05d9,  2,  0, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xde, 0x94, 0x82, 0x76, 0x56}, 8, 1, 16,  256, 2, 2, 2062, 0x01d9,  1,  0, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0x45, 0xde, 0x94, 0x93, 0x76, 0xd7}, 8, 1, 32,  256, 2, 2, 1058, 0x05d9,  2, 66, 40, 32, 3, 1, 1, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xec, 0xd7, 0x94, 0x7e, 0x64, 0x44}, 0, 1, 16,  128, 2, 2, 2048, 0x01d9,  2, 49, 60, 36, 3, 0, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xec, 0xde, 0xd5, 0x7e, 0x68, 0x44}, 0, 2, 16,  128, 2, 2, 2048, 0x01f9,  2, 49, 60, 36, 3, 0, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xec, 0xd7, 0x94, 0x7a, 0x54, 0x43}, 0, 1, 16,  128, 2, 2, 2076, 0x0199,  2,  0, 40, 36, 3, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xec, 0xde, 0xd5, 0x7a, 0x58, 0x43}, 0, 2, 16,  128, 2, 2, 2076, 0x01b9,  2,  0, 40, 36, 3, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xec, 0xd5, 0x94, 0x76, 0x54, 0x43}, 0, 1, 16,  128, 2, 2, 1038, 0x0119,  2,  0, 24, 36, 3, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xec, 0xd7, 0x14, 0x76, 0x54, 0xc2}, 0, 1, 16,  128, 2, 2, 2076, 0x0491,  2,  0, 24, 40, 3, 1, 3, 0, 0, {0, 0, 0, 0, 0}},
+	{6, {0xec, 0xde, 0x94, 0xc3, 0xa4, 0xca}, 0, 1, 32,  792, 2, 1,  688, 0x04c1, 11, 50, 40, 32, 3, 1, 1, 0, 1, {0, 0, 0, 0, 0}},
+};
+
+#if !IS_ENABLED(CONFIG_SANDBOX)
+static int rkmtd_write_oob(struct rkmtd_dev *plat, ulong off, u_char *datbuf, u_char *oobbuf)
+{
+	struct mtd_info *mtd = plat->mtd;
+	struct mtd_oob_ops ops;
+	loff_t addr;
+	int ret;
+
+	off &= ~(mtd->writesize - 1);
+	addr = (loff_t)off;
+
+	memset(&ops, 0, sizeof(ops));
+	ops.datbuf = datbuf;
+	ops.oobbuf = oobbuf;
+	ops.len = mtd->writesize;
+	ops.ooblen = mtd->oobsize;
+	ops.mode = MTD_OPS_PLACE_OOB;
+	ret = mtd_write_oob(mtd, addr, &ops);
+	if (ret < 0) {
+		debug("Error (%d) writing page %08lx\n", ret, off);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int rkmtd_read_oob(struct rkmtd_dev *plat, ulong off, u_char *datbuf, u_char *oobbuf)
+{
+	struct mtd_info *mtd = plat->mtd;
+	struct mtd_oob_ops ops;
+	loff_t addr;
+	int ret;
+
+	off &= ~(mtd->writesize - 1);
+	addr = (loff_t)off;
+
+	memset(&ops, 0, sizeof(ops));
+	ops.datbuf = datbuf;
+	ops.oobbuf = oobbuf;
+	ops.len = mtd->writesize;
+	ops.ooblen = mtd->oobsize;
+	ops.mode = MTD_OPS_PLACE_OOB;
+	ret = mtd_read_oob(mtd, addr, &ops);
+	if (ret < 0) {
+		debug("Error (%d) reading page %08lx\n", ret, off);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int rkmtd_erase(struct rkmtd_dev *plat, ulong off)
+{
+	struct mtd_info *mtd = plat->mtd;
+	struct erase_info info;
+	loff_t addr;
+	int ret;
+
+	off &= ~(mtd->writesize - 1);
+	addr = (loff_t)off;
+
+	memset(&info, 0, sizeof(info));
+	info.mtd = mtd;
+	info.addr = addr;
+	info.len = mtd->erasesize;
+	info.scrub = 1;
+	ret = mtd_erase(mtd, &info);
+	if (ret) {
+		debug("Error (%d) erasing page %08lx\n", ret, off);
+		return 1;
+	}
+
+	return 0;
+}
+#endif
+void rkmtd_scan_block(struct rkmtd_dev *plat)
+{
+	plat->blk_counter = 0;
+
+#if !IS_ENABLED(CONFIG_SANDBOX)
+	u32 blk;
+
+	for (blk = 0; blk < plat->boot_blks; blk++) {
+		rkmtd_read_oob(plat, blk * plat->mtd->erasesize, plat->datbuf, plat->oobbuf);
+		if (*(u32 *)plat->datbuf == RK_TAG) {
+			struct sector0 *sec0 = (struct sector0 *)plat->datbuf;
+
+			rkmtd_rc4(plat->datbuf, 512);
+
+			plat->idblock[plat->blk_counter].blk = blk;
+			plat->idblock[plat->blk_counter].offset = sec0->boot_code1_offset;
+			plat->idblock[plat->blk_counter].boot_size = sec0->flash_boot_size;
+
+			debug("\nblk       : %d\n", plat->idblock[plat->blk_counter].blk);
+			debug("offset    : %d\n", plat->idblock[plat->blk_counter].offset);
+			debug("boot_size : %d\n", plat->idblock[plat->blk_counter].boot_size);
+
+			plat->blk_counter += 1;
+
+			if (plat->blk_counter >= ARRAY_SIZE(plat->idblock))
+				return;
+		}
+	}
+#endif
+}
+
+void rkmtd_read_block(struct rkmtd_dev *plat, u32 idx, u8 *buf)
+{
+#if !IS_ENABLED(CONFIG_SANDBOX)
+	ulong off = plat->idblock[idx].blk * plat->mtd->erasesize;
+	struct nand_chip *chip = mtd_to_nand(plat->mtd);
+	struct nand_ecc_ctrl *ecc = &chip->ecc;
+	int counter = 0;
+	u32 spare0 = 0;
+	u32 *p_spare;
+	int sector;
+	int page;
+
+	rkmtd_read_oob(plat, off,
+		       plat->datbuf, plat->oobbuf);
+
+	memcpy(buf, plat->datbuf, BLK_SIZE);
+
+	while (counter < plat->idblock[idx].boot_size) {
+		if (spare0)
+			page = (plat->idblock[idx].offset + spare0) / 4;
+		else
+			page = (plat->idblock[idx].offset + counter) / 4;
+
+		rkmtd_read_oob(plat,
+			       off + page * plat->mtd->writesize,
+			       plat->datbuf, plat->oobbuf);
+
+		sector = plat->idblock[idx].offset + counter;
+
+		memcpy(&buf[(sector / 4) * BLK_SIZE], plat->datbuf, BLK_SIZE);
+
+		p_spare = (u32 *)&plat->oobbuf[(ecc->steps - 1) * NFC_SYS_DATA_SIZE];
+
+		spare0 = *p_spare;
+		if (spare0 == -1)
+			break;
+
+		counter += 4;
+	}
+#endif
+}
+
+void rkmtd_write_block(struct rkmtd_dev *plat, u32 idx, u8 *buf)
+{
+#if !IS_ENABLED(CONFIG_SANDBOX)
+	ulong off = plat->idblock[idx].blk * plat->mtd->erasesize;
+	struct nand_chip *chip = mtd_to_nand(plat->mtd);
+	struct nand_ecc_ctrl *ecc = &chip->ecc;
+	int counter = 0;
+	u32 *p_spare;
+	int sector;
+	int page;
+	int j, w, r;
+
+	rkmtd_erase(plat, off);
+
+	memset(plat->datbuf, 0xff, plat->mtd->writesize);
+	memcpy(plat->datbuf, buf, BLK_SIZE);
+	memset(plat->oobbuf, 0xff, plat->mtd->oobsize);
+
+	rkmtd_write_oob(plat, off,
+			plat->datbuf, plat->oobbuf);
+
+	while (counter < plat->idblock[idx].boot_size) {
+		sector = plat->idblock[idx].offset + counter;
+
+		memset(plat->datbuf, 0xff, plat->mtd->writesize);
+		memcpy(plat->datbuf, &buf[(sector / 4) * BLK_SIZE], BLK_SIZE);
+		memset(plat->oobbuf, 0xff, plat->mtd->oobsize);
+
+		p_spare = (u32 *)&plat->oobbuf[(ecc->steps - 1) * NFC_SYS_DATA_SIZE];
+
+		*p_spare = (plat->page_table[sector / 4 + 1] - 1) * 4;
+
+		page = plat->page_table[sector / 4];
+
+		rkmtd_write_oob(plat,
+				off + page * plat->mtd->writesize,
+				plat->datbuf, plat->oobbuf);
+
+		counter += 4;
+	}
+
+	memset(plat->check, 0, BUF_SIZE);
+	rkmtd_read_block(plat, idx, plat->check);
+
+	for (j = 0; j < BLK_SIZE; j++) {
+		w = *(buf + j);
+		r = *(plat->check + j);
+
+		if (r != w)
+			goto dumpblock;
+	}
+
+	for (j = 0; j < (plat->idblock[idx].boot_size * 512); j++) {
+		w = *(buf + plat->idblock[idx].offset * 512 + j);
+		r = *(plat->check + plat->idblock[idx].offset * 512  + j);
+
+		if (r != w)
+			goto dumpblock;
+	}
+
+	debug("write OK\n");
+	return;
+
+dumpblock:
+	debug("write and check error:%x r=%x w=%x\n", j, r, w);
+
+	plat->idblock[idx].offset = 0;
+	plat->idblock[idx].boot_size = 0;
+
+	memset(plat->datbuf, 0xff, plat->mtd->writesize);
+	memset(plat->datbuf, 0, BLK_SIZE);
+	memset(plat->oobbuf, 0xff, plat->mtd->oobsize);
+
+	rkmtd_write_oob(plat, off, plat->datbuf, plat->oobbuf);
+#endif
+}
+
+ulong rkmtd_bread(struct udevice *udev, lbaint_t start,
+		  lbaint_t blkcnt, void *dst)
+{
+	struct blk_desc *block_dev = dev_get_uclass_plat(udev);
+	struct udevice *parent_dev = dev_get_parent(udev);
+	struct rkmtd_dev *plat = dev_get_plat(parent_dev);
+	char *buf = dst;
+	int i;
+
+	if (blkcnt == 0)
+		return 0;
+
+	if (start > (block_dev->lba - 1) ||
+	    (start + blkcnt) > block_dev->lba)
+		return 0;
+
+	memset(dst, 0, blkcnt * block_dev->blksz);
+
+	for (i = start; i < (start + blkcnt); i++) {
+		if (i == 0)  {
+			debug("mbr     : %d\n", i);
+
+			memcpy(&buf[(i - start) * block_dev->blksz],
+			       plat->mbr, sizeof(legacy_mbr));
+		} else if (i == 1) {
+			debug("gpt_h   : %d\n", i);
+
+			memcpy(&buf[(i - start) * block_dev->blksz],
+			       plat->gpt_h, sizeof(gpt_header));
+		} else if (i == (block_dev->lba - 1)) {
+			debug("gpt_h2  : %d\n", i);
+
+			memcpy(&buf[(i - start) * block_dev->blksz],
+			       plat->gpt_h2, sizeof(gpt_header));
+		} else if (i == 2 || i == (block_dev->lba - 33)) {
+			debug("gpt_e   : %d\n", i);
+
+			memcpy(&buf[(i - start) * block_dev->blksz],
+			       plat->gpt_e, sizeof(gpt_entry));
+		} else if (i >= 64 && i < (block_dev->lba - 33)) {
+			debug("rd      : %d\n", i);
+
+			memcpy(&buf[(i - start) * block_dev->blksz],
+			       &plat->idb[(i - 64) * block_dev->blksz], block_dev->blksz);
+		}
+	}
+
+	return blkcnt;
+}
+
+ulong rkmtd_bwrite(struct udevice *udev, lbaint_t start,
+		   lbaint_t blkcnt, const void *src)
+{
+	struct blk_desc *block_dev = dev_get_uclass_plat(udev);
+	struct udevice *parent_dev = dev_get_parent(udev);
+	struct rkmtd_dev *plat = dev_get_plat(parent_dev);
+	struct sector0 *sec0;
+	int i, j;
+
+	if (blkcnt == 0)
+		return 0;
+
+	if (start > (block_dev->lba - 1) ||
+	    (start + blkcnt) > block_dev->lba)
+		return 0;
+
+	for (i = start; i < (start + blkcnt); i++) {
+		debug("wr      : %d\n", i);
+
+		if (i >= 64 && i < (block_dev->lba - 33)) {
+			if (i == 64) {
+				debug("first block\n");
+
+				plat->idb_need_write_back = 1;
+				memset(plat->idb, 0, BUF_SIZE);
+			}
+
+			if (plat->idb_need_write_back) {
+				char *buf = (char *)src;
+
+				memcpy(&plat->idb[(i - 64) * block_dev->blksz],
+				       &buf[(i - start) * block_dev->blksz],
+				       block_dev->blksz);
+
+				if (i == 64) {
+					memcpy(plat->check, plat->idb, 512);
+
+					if (*(u32 *)plat->check == RK_TAG) {
+						rkmtd_rc4(plat->check, 512);
+
+						sec0 = (struct sector0 *)plat->check;
+						plat->offset = sec0->boot_code1_offset;
+						plat->boot_size = sec0->flash_boot_size;
+
+						if (plat->offset + plat->boot_size > 512) {
+							debug("max size limit\n");
+							plat->idb_need_write_back = 0;
+						}
+					} else {
+						debug("no IDB block found\n");
+						plat->idb_need_write_back = 0;
+					}
+				}
+
+				if (i == (64 + plat->offset + plat->boot_size - 1)) {
+					debug("last block\n");
+
+					plat->idb_need_write_back = 0;
+
+					if (!plat->blk_counter) {
+						plat->idblock[0].blk = 2;
+						plat->idblock[1].blk = 3;
+						plat->idblock[2].blk = 4;
+						plat->idblock[3].blk = 5;
+						plat->idblock[4].blk = 6;
+						plat->blk_counter = 5;
+					}
+
+					for (j = 0; j < plat->blk_counter; j++) {
+						if (plat->idblock[j].blk < plat->boot_blks) {
+							plat->idblock[j].offset = plat->offset;
+							plat->idblock[j].boot_size = plat->boot_size;
+							rkmtd_write_block(plat, j, plat->idb);
+						}
+					}
+
+					rkmtd_scan_block(plat);
+
+					if (!IS_ENABLED(CONFIG_SANDBOX))
+						memset(plat->idb, 0, BUF_SIZE);
+
+					if (plat->blk_counter)
+						rkmtd_read_block(plat, 0, plat->idb);
+				}
+			}
+		} else if (plat->idb_need_write_back) {
+			plat->idb_need_write_back = 0;
+
+			memset(plat->idb, 0, BUF_SIZE);
+
+			if (plat->blk_counter)
+				rkmtd_read_block(plat, 0, plat->idb);
+		}
+	}
+
+	return blkcnt;
+}
+
+static const struct blk_ops rkmtd_blk_ops = {
+	.read	= rkmtd_bread,
+	.write	= rkmtd_bwrite,
+};
+
+U_BOOT_DRIVER(rkmtd_blk) = {
+	.name		= "rkmtd_blk",
+	.id		= UCLASS_BLK,
+	.ops		= &rkmtd_blk_ops,
+};
+
+void rkmtd_build_page_table(struct rkmtd_dev *plat)
+{
+	u32 counter;
+	u32 counter2;
+
+	switch (plat->lsb_mode) {
+	case 0:
+		counter = 0;
+		do {
+			u16 val = counter;
+
+			plat->page_table[counter++] = val;
+		} while (counter != 512);
+		break;
+	case 1:
+		counter = 0;
+		do {
+			u16 val = counter;
+
+			if (counter > 3) {
+				u16 offset;
+
+				if (counter & 1)
+					offset = 3;
+				else
+					offset = 2;
+				val = 2 * counter - offset;
+			}
+			plat->page_table[counter++] = val;
+		} while (counter != 512);
+		break;
+	case 2:
+		counter = 0;
+		do {
+			u16 val = counter;
+
+			if (counter > 1)
+				val = 2 * counter - 1;
+			plat->page_table[counter++] = val;
+		} while (counter != 512);
+		break;
+	case 3:
+		counter = 0;
+		do {
+			u16 val = counter;
+
+			if (counter > 5) {
+				u16 offset;
+
+				if (counter & 1)
+					offset = 5;
+				else
+					offset = 4;
+				val = 2 * counter - offset;
+			}
+			plat->page_table[counter++] = val;
+		} while (counter != 512);
+		break;
+	case 4:
+		counter = 8;
+		plat->page_table[0] = 0;
+		plat->page_table[1] = 1;
+		plat->page_table[2] = 2;
+		plat->page_table[3] = 3;
+		plat->page_table[4] = 4;
+		plat->page_table[5] = 5;
+		plat->page_table[6] = 7;
+		plat->page_table[7] = 8;
+		do {
+			u32 offset;
+			u32 val;
+
+			if (counter & 1)
+				offset = 7;
+			else
+				offset = 6;
+			val = 2 * counter - offset;
+			plat->page_table[counter++] = val;
+		} while (counter != 512);
+		break;
+	case 5:
+		counter = 0;
+		counter2 = 16;
+		do {
+			u16 val = counter;
+
+			plat->page_table[counter++] = val;
+		} while (counter != 16);
+		do {
+			plat->page_table[counter++] = counter2;
+			counter2 = counter2 + 2;
+		} while (counter != 512);
+		break;
+	case 6:
+		counter = 0;
+		counter2 = 0;
+		do {
+			u16 val = counter;
+
+			if (counter > 5) {
+				u16 offset;
+
+				if (counter & 1)
+					offset = 12;
+				else
+					offset = 10;
+				val = counter2 - offset;
+			}
+			plat->page_table[counter++] = val;
+			counter2 = counter2 + 3;
+		} while (counter != 512);
+		break;
+	case 9:
+		counter = 3;
+		counter2 = 3;
+		plat->page_table[0] = 0;
+		plat->page_table[1] = 1;
+		plat->page_table[2] = 2;
+		do {
+			plat->page_table[counter++] = counter2;
+			counter2 = counter2 + 2;
+		} while (counter != 512);
+		break;
+	case 10:
+		counter = 0;
+		counter2 = 63;
+		do {
+			u16 val = counter;
+
+			plat->page_table[counter++] = val;
+		} while (counter != 63);
+		do {
+			plat->page_table[counter++] = counter2;
+			counter2 = counter2 + 2;
+		} while (counter != 512);
+		break;
+	case 11:
+		counter = 0;
+		do {
+			u16 val = counter;
+
+			plat->page_table[counter++] = val;
+		} while (counter != 8);
+		do {
+			u32 offset;
+			u32 val;
+
+			if (counter & 1)
+				offset = 7;
+			else
+				offset = 6;
+			val = 2 * counter - offset;
+			plat->page_table[counter++] = val;
+		} while (counter != 512);
+		break;
+	case 12:
+		counter = 4;
+		plat->page_table[0] = 0;
+		plat->page_table[1] = 1;
+		plat->page_table[2] = 2;
+		plat->page_table[3] = 3;
+		do {
+			u32 val = counter - 1 + (counter >> 1);
+
+			plat->page_table[counter++] = val;
+		} while (counter != 512);
+		break;
+	}
+}
+
+static inline u32 efi_crc32(const void *buf, u32 len)
+{
+	return crc32(0, buf, len);
+}
+
+int rkmtd_init_plat(struct udevice *dev)
+{
+	static const efi_guid_t partition_basic_data_guid = PARTITION_BASIC_DATA_GUID;
+	struct rkmtd_dev *plat = dev_get_plat(dev);
+	size_t efiname_len, dosname_len;
+	uchar name[] = "loader1";
+	u32 calc_crc32;
+	int k;
+
+	gen_rand_uuid_str(plat->uuid_disk_str, UUID_STR_FORMAT_GUID);
+	gen_rand_uuid_str(plat->uuid_part_str, UUID_STR_FORMAT_GUID);
+
+	debug("uuid_part_str          : %s\n", plat->uuid_part_str);
+	debug("uuid_disk_str          : %s\n", plat->uuid_disk_str);
+
+	plat->idb = devm_kzalloc(plat->dev, BUF_SIZE, GFP_KERNEL);
+	if (!plat->idb)
+		return -ENOMEM;
+
+	plat->check = devm_kzalloc(plat->dev, BUF_SIZE, GFP_KERNEL);
+	if (!plat->check)
+		return -ENOMEM;
+
+	plat->mbr = devm_kzalloc(plat->dev, sizeof(legacy_mbr), GFP_KERNEL);
+	if (!plat->mbr)
+		return -ENOMEM;
+
+	plat->gpt_e = devm_kzalloc(plat->dev, sizeof(gpt_entry), GFP_KERNEL);
+	if (!plat->gpt_e)
+		return -ENOMEM;
+
+	plat->gpt_h = devm_kzalloc(plat->dev, sizeof(gpt_header), GFP_KERNEL);
+	if (!plat->gpt_h)
+		return -ENOMEM;
+
+	plat->gpt_h2 = devm_kzalloc(plat->dev, sizeof(gpt_header), GFP_KERNEL);
+	if (!plat->gpt_h2)
+		return -ENOMEM;
+
+	/* Init mbr */
+	plat->mbr->signature = MSDOS_MBR_SIGNATURE;
+	plat->mbr->partition_record[0].sys_ind = EFI_PMBR_OSTYPE_EFI_GPT;
+	plat->mbr->partition_record[0].start_sect = 1;
+	plat->mbr->partition_record[0].nr_sects = LBA - 1;
+
+	/* Init gpt_e */
+	plat->gpt_e->starting_lba = cpu_to_le64(64);
+	plat->gpt_e->ending_lba = cpu_to_le64(LBA - 34);
+
+	debug("starting_lba           : %llu\n", le64_to_cpu(plat->gpt_e->starting_lba));
+	debug("ending_lba             : %llu\n", le64_to_cpu(plat->gpt_e->ending_lba));
+
+	memcpy(plat->gpt_e->partition_type_guid.b, &partition_basic_data_guid, 16);
+
+	uuid_str_to_bin(plat->uuid_part_str, plat->gpt_e->unique_partition_guid.b,
+			UUID_STR_FORMAT_GUID);
+
+	efiname_len = sizeof(plat->gpt_e->partition_name) / sizeof(efi_char16_t);
+	dosname_len = sizeof(name);
+
+	for (k = 0; k < min(dosname_len, efiname_len); k++)
+		plat->gpt_e->partition_name[k] = (efi_char16_t)(name[k]);
+
+	/* Init gpt_h */
+	plat->gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE_UBOOT);
+	plat->gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1);
+	plat->gpt_h->header_size = cpu_to_le32(sizeof(gpt_header));
+	plat->gpt_h->first_usable_lba = cpu_to_le64(64);
+	plat->gpt_h->last_usable_lba = cpu_to_le64(LBA - 34);
+	plat->gpt_h->num_partition_entries = cpu_to_le32(1);
+	plat->gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry));
+
+	uuid_str_to_bin(plat->uuid_disk_str, plat->gpt_h->disk_guid.b,
+			UUID_STR_FORMAT_GUID);
+
+	plat->gpt_h->partition_entry_array_crc32 = 0;
+	calc_crc32 = efi_crc32((const unsigned char *)plat->gpt_e,
+			       le32_to_cpu(plat->gpt_h->num_partition_entries) *
+			       le32_to_cpu(plat->gpt_h->sizeof_partition_entry));
+	plat->gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32);
+
+	debug("partition crc32        : 0x%08x\n", calc_crc32);
+
+	plat->gpt_h->my_lba = cpu_to_le64(1);
+	plat->gpt_h->partition_entry_lba = cpu_to_le64(2);
+	plat->gpt_h->alternate_lba = cpu_to_le64(LBA - 1);
+
+	plat->gpt_h->header_crc32 = 0;
+	calc_crc32 = efi_crc32((const unsigned char *)plat->gpt_h,
+			       le32_to_cpu(plat->gpt_h->header_size));
+	plat->gpt_h->header_crc32 = cpu_to_le32(calc_crc32);
+
+	debug("header h1 crc32        : 0x%08x\n", calc_crc32);
+
+	/* Init gpt_h2 */
+	memcpy(plat->gpt_h2, plat->gpt_h, sizeof(gpt_header));
+
+	plat->gpt_h2->my_lba = cpu_to_le64(LBA - 1);
+	plat->gpt_h2->partition_entry_lba =
+		cpu_to_le64(le64_to_cpu(plat->gpt_h2->last_usable_lba) + 1);
+	plat->gpt_h2->alternate_lba = cpu_to_le64(1);
+
+	plat->gpt_h2->header_crc32 = 0;
+	calc_crc32 = efi_crc32((const unsigned char *)plat->gpt_h2,
+			       le32_to_cpu(plat->gpt_h2->header_size));
+	plat->gpt_h2->header_crc32 = cpu_to_le32(calc_crc32);
+
+	debug("header h2 crc32        : 0x%08x\n", calc_crc32);
+
+	part_init(plat->desc);
+
+	return 0;
+}
+
+static void rkmtd_blk_kmalloc_release(struct udevice *dev, void *res)
+{
+	/* noop */
+}
+
+static int rkmtd_bind(struct udevice *dev)
+{
+	struct rkmtd_dev *plat = dev_get_plat(dev);
+	char dev_name[30], *str;
+	struct blk_desc *desc;
+	struct udevice *bdev;
+	int ret;
+
+	snprintf(dev_name, sizeof(dev_name), "%s.%s", dev->name, "blk");
+
+	str = devres_alloc(rkmtd_blk_kmalloc_release, strlen(dev_name) + 1, GFP_KERNEL);
+	if (unlikely(!str))
+		return -ENOMEM;
+
+	strcpy(str, dev_name);
+
+	ret = blk_create_device(dev, "rkmtd_blk", str, UCLASS_RKMTD,
+				-1, 512, LBA, &bdev);
+	if (ret) {
+		free(str);
+		return log_msg_ret("blk", ret);
+	}
+
+	devres_add(dev, str);
+
+	desc = dev_get_uclass_plat(bdev);
+	sprintf(desc->vendor, "0x%.4x", 0x2207);
+	memcpy(desc->product, "RKMTD", sizeof("RKMTD"));
+	memcpy(desc->revision, "V1.00", sizeof("V1.00"));
+	plat->desc = desc;
+
+	return 0;
+}
+
+static int rkmtd_attach_mtd(struct udevice *dev)
+{
+	struct rkmtd_dev *plat = dev_get_plat(dev);
+	struct mtd_info *mtd;
+	struct udevice *blk;
+	int ret;
+
+	plat->dev = dev;
+
+	/* Sanity check that rkmtd_bind() has been used */
+	ret = blk_find_from_parent(dev, &blk);
+	if (ret)
+		return ret;
+
+#if IS_ENABLED(CONFIG_SANDBOX)
+	plat->mtd = devm_kzalloc(dev, sizeof(struct mtd_info), GFP_KERNEL);
+	if (!plat->mtd)
+		return -ENOMEM;
+
+	mtd = plat->mtd;
+	mtd->erasesize = 2 ^ 3 * BLK_SIZE;
+	mtd->writesize = BLK_SIZE;
+	mtd->oobsize = BLK_SIZE / STEP_SIZE * NFC_SYS_DATA_SIZE;
+	plat->boot_blks = 0;
+	plat->lsb_mode = 0;
+#else
+	struct nand_chip *chip;
+	u8 id[6];
+	int i, j;
+	u32 tmp;
+
+	mtd = get_nand_dev_by_index(0);
+	if (!mtd)
+		return -ENOSYS;
+
+	chip = mtd_to_nand(mtd);
+
+	ret = ofnode_read_u32(chip->flash_node, "rockchip,boot-blks", &tmp);
+	plat->boot_blks = ret ? 0 : tmp;
+	plat->mtd = mtd;
+
+	if (chip->select_chip)
+		chip->select_chip(mtd, 0);
+
+	nand_readid_op(chip, 0, id, 6);
+
+	if (chip->select_chip)
+		chip->select_chip(mtd, -1);
+
+	for (i = 0; i < ARRAY_SIZE(nand_para_tbl); i++) {
+		plat->info = (struct nand_para_info *)&nand_para_tbl[i];
+		for (j = 0; j < plat->info->id_bytes; j++) {
+			if (plat->info->nand_id[j] != id[j])
+				break;
+			if (j == plat->info->id_bytes - 1)
+				goto valid;
+		}
+	}
+
+	debug("no nand_para_info found\n");
+	return -ENODEV;
+valid:
+	plat->lsb_mode = plat->info->lsb_mode;
+
+	debug("FLASH ID :");
+
+	for (j = 0; j < plat->info->id_bytes; j++)
+		debug(" %x", id[j]);
+
+	debug("\n");
+#endif
+
+	rkmtd_build_page_table(plat);
+
+	plat->datbuf = devm_kzalloc(dev, mtd->writesize, GFP_KERNEL);
+	if (!plat->datbuf)
+		return -ENOMEM;
+
+	plat->oobbuf = devm_kzalloc(dev, mtd->oobsize, GFP_KERNEL);
+	if (!plat->oobbuf)
+		return -ENOMEM;
+
+	debug("erasesize     %8d\n", mtd->erasesize);
+	debug("writesize     %8d\n", mtd->writesize);
+	debug("oobsize       %8d\n", mtd->oobsize);
+	debug("boot_blks     %8d\n", plat->boot_blks);
+	debug("lsb_mode      %8d\n", plat->lsb_mode);
+
+	ret = rkmtd_init_plat(dev);
+	if (ret) {
+		debug("rkmtd_init_plat failed\n");
+		return -ENOENT;
+	}
+
+	rkmtd_scan_block(plat);
+
+	memset(plat->idb, 0, BUF_SIZE);
+
+	if (plat->blk_counter)
+		rkmtd_read_block(plat, 0, plat->idb);
+
+	return 0;
+}
+
+int rkmtd_detach_mtd(struct udevice *dev)
+{
+	int ret;
+
+	ret = device_remove(dev, DM_REMOVE_NORMAL);
+	if (ret)
+		return log_msg_ret("rem", ret);
+
+	ret = device_chld_unbind(dev, NULL);
+	if (ret)
+		return log_msg_ret("unb", ret);
+
+	return 0;
+}
+
+struct rkmtd_ops rkmtd_ops = {
+	.attach_mtd	= rkmtd_attach_mtd,
+	.detach_mtd	= rkmtd_detach_mtd,
+};
+
+U_BOOT_DRIVER(rkmtd_drv) = {
+	.name		= "rkmtd_drv",
+	.id		= UCLASS_RKMTD,
+	.ops		= &rkmtd_ops,
+	.bind		= rkmtd_bind,
+	.plat_auto	= sizeof(struct rkmtd_dev),
+};
+
+struct rkmtd_priv {
+	struct udevice *cur_dev;
+};
+
+void rkmtd_rc4(u8 *buf, u32 len)
+{
+	u8 S[256], K[256], temp;
+	u32 i, j, t, x;
+	u8 key[16] = { 124, 78, 3, 4, 85, 5, 9, 7, 45, 44, 123, 56, 23, 13, 23, 17};
+
+	j = 0;
+	for (i = 0; i < 256; i++) {
+		S[i] = (u8)i;
+		j &= 0x0f;
+		K[i] = key[j];
+		j++;
+	}
+
+	j = 0;
+	for (i = 0; i < 256; i++) {
+		j = (j + S[i] + K[i]) % 256;
+		temp = S[i];
+		S[i] = S[j];
+		S[j] = temp;
+	}
+
+	i = 0;
+	j = 0;
+	for (x = 0; x < len; x++) {
+		i = (i + 1) % 256;
+		j = (j + S[i]) % 256;
+		temp = S[i];
+		S[i] = S[j];
+		S[j] = temp;
+		t = (S[i] + (S[j] % 256)) % 256;
+		buf[x] = buf[x] ^ S[t];
+	}
+}
+
+struct udevice *rkmtd_get_cur_dev(void)
+{
+	struct uclass *uc = uclass_find(UCLASS_RKMTD);
+
+	if (uc) {
+		struct rkmtd_priv *priv = uclass_get_priv(uc);
+
+		return priv->cur_dev;
+	}
+
+	return NULL;
+}
+
+void rkmtd_set_cur_dev(struct udevice *dev)
+{
+	struct uclass *uc = uclass_find(UCLASS_RKMTD);
+
+	if (uc) {
+		struct rkmtd_priv *priv = uclass_get_priv(uc);
+
+		priv->cur_dev = dev;
+	}
+}
+
+struct udevice *rkmtd_find_by_label(const char *label)
+{
+	struct udevice *dev;
+	struct uclass *uc;
+
+	uclass_id_foreach_dev(UCLASS_RKMTD, dev, uc) {
+		struct rkmtd_dev *plat = dev_get_plat(dev);
+
+		if (plat->label && !strcmp(label, plat->label))
+			return dev;
+	}
+
+	return NULL;
+}
+
+int rkmtd_attach(struct udevice *dev)
+{
+	struct rkmtd_ops *ops = rkmtd_get_ops(dev);
+
+	if (!ops->attach_mtd)
+		return -ENOSYS;
+
+	return ops->attach_mtd(dev);
+}
+
+int rkmtd_detach(struct udevice *dev)
+{
+	struct rkmtd_ops *ops = rkmtd_get_ops(dev);
+
+	if (!ops->detach_mtd)
+		return -ENOSYS;
+
+	if (dev == rkmtd_get_cur_dev())
+		rkmtd_set_cur_dev(NULL);
+
+	return ops->detach_mtd(dev);
+}
+
+static void rkmtd_drv_kmalloc_release(struct udevice *dev, void *res)
+{
+	/* noop */
+}
+
+int rkmtd_create_device(const char *label, struct udevice **devp)
+{
+	char dev_name[30], *str, *label_new;
+	struct udevice *dev, *blk;
+	struct rkmtd_dev *plat;
+	int ret;
+
+	/* unbind any existing device with this label */
+	dev = rkmtd_find_by_label(label);
+	if (dev) {
+		ret = rkmtd_detach(dev);
+		if (ret)
+			return log_msg_ret("det", ret);
+
+		ret = device_unbind(dev);
+		if (ret)
+			return log_msg_ret("unb", ret);
+	}
+
+	snprintf(dev_name, sizeof(dev_name), "rkmtd-%s", label);
+
+	str = devres_alloc(rkmtd_drv_kmalloc_release, strlen(dev_name) + 1, GFP_KERNEL);
+	if (unlikely(!str))
+		return -ENOMEM;
+
+	strcpy(str, dev_name);
+
+	ret = device_bind_driver(dm_root(), "rkmtd_drv", str, &dev);
+	if (ret) {
+		free(str);
+		return log_msg_ret("drv", ret);
+	}
+
+	devres_add(dev, str);
+
+	if (!blk_find_from_parent(dev, &blk)) {
+		struct blk_desc *desc = dev_get_uclass_plat(blk);
+
+		desc->removable = true;
+	}
+
+	label_new = devm_kzalloc(dev, strlen(label) + 1, GFP_KERNEL);
+	if (!label_new)
+		return -ENOMEM;
+
+	strcpy(label_new, label);
+
+	plat = dev_get_plat(dev);
+	plat->label = label_new;
+	*devp = dev;
+
+	return 0;
+}
+
+int rkmtd_create_attach_mtd(const char *label, struct udevice **devp)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = rkmtd_create_device(label, &dev);
+	if (ret)
+		return log_msg_ret("cre", ret);
+
+	ret = rkmtd_attach(dev);
+	if (ret) {
+		device_unbind(dev);
+		return log_msg_ret("att", ret);
+	}
+	*devp = dev;
+
+	return 0;
+}
+
+UCLASS_DRIVER(rkmtd) = {
+	.name		= "rkmtd",
+	.id		= UCLASS_RKMTD,
+	.post_bind	= dm_scan_fdt_dev,
+	.priv_auto	= sizeof(struct rkmtd_priv),
+};
diff --git a/include/rkmtd.h b/include/rkmtd.h
new file mode 100644
index 0000000..145fede
--- /dev/null
+++ b/include/rkmtd.h
@@ -0,0 +1,191 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Driver interface derived from:
+ * /include/sandbox_host.h
+ * Copyright 2022 Google LLC
+ *
+ * Copyright 2023 Johan Jonker <jbx6244@gmail.com>
+ */
+
+#ifndef __RKMTD__
+#define __RKMTD__
+
+#include <part_efi.h>
+#include <uuid.h>
+
+#define LBA			64 + 512 + 33
+
+#define RK_TAG			0xFCDC8C3B
+#define NFC_SYS_DATA_SIZE	4
+#define BLK_SIZE		2048
+#define STEP_SIZE		1024
+#define BUF_SIZE		512 * 512
+
+struct nand_para_info {
+	u8 id_bytes;
+	u8 nand_id[6];
+	u8 vendor;
+	u8 die_per_chip;
+	u8 sec_per_page;
+	u16 page_per_blk;
+	u8 cell;
+	u8 plane_per_die;
+	u16 blk_per_plane;
+	u16 operation_opt;
+	u8 lsb_mode;
+	u8 read_retry_mode;
+	u8 ecc_bits;
+	u8 access_freq;
+	u8 opt_mode;
+	u8 die_gap;
+	u8 bad_block_mode;
+	u8 multi_plane_mode;
+	u8 slc_mode;
+	u8 reserved[5];
+};
+
+struct bootblk {
+	int blk;
+	int boot_size;
+	int offset;
+};
+
+struct rkmtd_dev {
+	struct udevice *dev;
+	struct blk_desc *desc;
+	char *label;
+	legacy_mbr *mbr;
+	gpt_header *gpt_h;
+	gpt_header *gpt_h2;
+	gpt_entry *gpt_e;
+	char *check;
+	char *idb;
+	char *str;
+	char uuid_part_str[UUID_STR_LEN + 1];
+	char uuid_disk_str[UUID_STR_LEN + 1];
+	char *datbuf;
+	char *oobbuf;
+	struct mtd_info *mtd;
+	struct nand_para_info *info;
+	u16 page_table[512];
+	u32 idb_need_write_back;
+	struct bootblk idblock[5];
+	u32 blk_counter;
+	u32 boot_blks;
+	u32 offset;
+	u32 boot_size;
+	u32 lsb_mode;
+};
+
+struct sector0 {
+	u32 magic;
+	u8  reserved[4];
+	u32 rc4_flag;
+	u16 boot_code1_offset;
+	u16 boot_code2_offset;
+	u8  reserved1[490];
+	u16 flash_data_size;
+	u16 flash_boot_size;
+	u8  reserved2[2];
+} __packed;
+
+/**
+ * rkmtd_rc4() - Rockchip specific RC4 Encryption Algorithm
+ *
+ * Encrypt Rockchip boot block header version 1 and data
+ *
+ * @buf: Pointer to data buffer
+ * @len: Data buffer size
+ */
+void rkmtd_rc4(u8 *buf, u32 len);
+
+/**
+ * struct rkmtd_ops - operations supported by UCLASS_RKMTD
+ */
+struct rkmtd_ops {
+	/**
+	 * @attach_mtd: - Attach a new rkmtd driver to the device structure
+	 *
+	 * @attach_mtd.dev: Device to update
+	 * @attach_mtd.Returns: 0 if OK, -EEXIST if a driver is already attached,
+	 * other -ve on other error
+	 */
+	int (*attach_mtd)(struct udevice *dev);
+
+	/**
+	 * @detach_mtd: - Detach a rkmtd driver from the device structure
+	 *
+	 * @detach_mtd.dev: Device to detach from
+	 * @detach_mtd.Returns: 0 if OK, -ENOENT if no driver is attached,
+	 * other -ve on other error
+	 */
+	int (*detach_mtd)(struct udevice *dev);
+};
+
+#define rkmtd_get_ops(dev)        ((struct rkmtd_ops *)(dev)->driver->ops)
+
+/**
+ * rkmtd_get_cur_dev() - Get the current device
+ *
+ * Returns current device, or NULL if none
+ */
+struct udevice *rkmtd_get_cur_dev(void);
+
+/**
+ * rkmtd_set_cur_dev() - Set the current device
+ *
+ * Sets the current device, or clears it if @dev is NULL
+ *
+ * @dev: Device to set as the current one
+ */
+void rkmtd_set_cur_dev(struct udevice *dev);
+
+/**
+ * rkmtd_find_by_label() - Find a rkmtd device by label
+ *
+ * Searches all rkmtd devices to find one with the given label
+ *
+ * @label: Label to find
+ * Returns: associated device, or NULL if not found
+ */
+struct udevice *rkmtd_find_by_label(const char *label);
+
+/**
+ * rkmtd_attach() - Attach a new rkmtd driver to the device structure
+ *
+ * @dev: Device to update
+ * Returns: 0 if OK, -EEXIST if a file is already attached, other -ve on
+ * other error
+ */
+int rkmtd_attach(struct udevice *dev);
+
+/**
+ * rkmtd_detach() - Detach a rkmtd driver from the device structure
+ *
+ * @dev: Device to detach from
+ * Returns: 0 if OK, -ENOENT if no file is attached, other -ve on other
+ * error
+ */
+int rkmtd_detach(struct udevice *dev);
+
+/**
+ * rkmtd_create_device() - Create a new rkmtd device
+ *
+ * Any existing device with the same label is removed and unbound first
+ *
+ * @label: Label of the attachment, e.g. "test1"
+ * @devp: Returns the device created, on success
+ * Returns: 0 if OK, -ve on error
+ */
+int rkmtd_create_device(const char *label, struct udevice **devp);
+
+/**
+ * rkmtd_create_attach_mtd() - Create a new rkmtd device and attach driver
+ *
+ * @label: Label of the attachment, e.g. "test1"
+ * @devp: Returns the device created, on success
+ * Returns: 0 if OK, -ve on error
+ */
+int rkmtd_create_attach_mtd(const char *label, struct udevice **devp);
+
+#endif /* __RKMTD__ */