[PATCH v1 0/3] Add rockmtd command

Johan Jonker jbx6244 at gmail.com
Thu Aug 24 15:27:38 CEST 2023

Rockmtd creates a virtual block device to transfer Rockchip
boot block data to and from NAND with block orientated tools
like "ums" and "rockusb".

It uses the Rockchip MTD driver to scan for boot blocks and copies
data from the first block in a GPT formatted virtual disk.
Data must be written in U-boot "idbloader.img" format and start at
partition "loader1" offset 64. The data header is parsed
for length and offset. When the last sector is received
it erases up to 5 erase blocks on NAND and writes boot blocks
in a pattern depending on the NAND ID. Data is then verified.
When a block turns out bad the block header is discarded.

Support for Rockchip boot block header type 1 only.
Pattern for listed NAND IDs only. (Logic still not disclosed by Rockchip)
The MTD framework driver data and NAND ID must be extracted at a lower level.
Only tested with rk3066 NFC v6.0.

Available rockmtd commands:
rockmtd bind <label>      - bind ROCKMTD device
rockmtd unbind <label>    - unbind ROCKMTD device
rockmtd info [<label>]    - show all available ROCKMTD devices
rockmtd dev [<label>]     - show or set current ROCKMTD device

U-boot settings:
Config to enable Rockchip MTD support:

Option to keep existing NAND data unchanged:

Commands to enable:

Linux Host (PC) tool commands combinations that work:

U-boot					Linux
rockmtd bind 0

# rockusb
rockusb 0 rkmtd 0
					upgrade_tool pl
					upgrade_tool wl 64 idbloader.img
					upgrade_tool rl 64 512 upgrade_tool_rl_64_512.img
					upgrade_tool rd

					rkdeveloptool ppt
					rkdeveloptool wlx loader1 idbloader.img
					rkdeveloptool wl 64 idbloader.img
					rkdeveloptool rl 64 512 rkdeveloptool_rl_64_512.img
					rkdeveloptool rd

					rkflashtool w 64 512 < idbloader.img
					rkflashtool r 64 512 > rkflashtool_r_64_512.img
# ums
ums 0 rkmtd 0
					dd if=idbloader.img of=/dev/sda1
					dd if=/dev/sda1 of=ums_0_idb_0_rd.img

Johan Jonker (3):
  mtd: nand: raw: rockchip_nfc: add NAND_SKIP_BBTSCAN option
  dm: prepare rkmtd UCLASS
  rockchip: cmd: add rockmtd command

 cmd/Kconfig                         |    7 +
 cmd/Makefile                        |    1 +
 cmd/rockmtd.c                       | 1429 +++++++++++++++++++++++++++
 disk/part.c                         |    4 +
 drivers/block/blk-uclass.c          |    1 +
 drivers/mtd/nand/raw/Kconfig        |    9 +
 drivers/mtd/nand/raw/rockchip_nfc.c |    3 +
 include/dm/uclass-id.h              |    1 +
 8 files changed, 1455 insertions(+)
 create mode 100644 cmd/rockmtd.c


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