From 3c0e2aa63ef040dbfbd7fe5f05bc9dfaf5ae9242 Mon Sep 17 00:00:00 2001
From: INAGAKI Hiroshi <musashino.open@gmail.com>
Date: Tue, 9 Apr 2019 14:48:31 +0900
Subject: ramips: add support for I-O DATA WN-DX1167R
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I-O DATA WN-DX1167R is a 2.4/5 GHz band 11ac rotuer, based on MediaTek
MT7621A.

Specification:

- SoC		: MediaTek MT7621A
- RAM		: DDR3 128 MiB
- Flash		: NAND 128 MiB
- WLAN		: MediaTek MT7615D (2.4/5 GHz, 2T2R)
- Ethernet	: 5x 10/100/1000 Mbps
  - Switch	: MediaTek MT7621A (MT7530)
- LEDs/Input	: 2x/3x (2x buttons, 1x slide-switch)
- UART		: through-hole on PCB
  - J5: Vcc, TX, RX, NC, GND
  - 57600 bps

Flash instruction using initramfs image:

1. Boot WN-DX1167R normally
2. Access to "http://192.168.0.1/" and open firmware update page
("ファームウェア")
3. Select the OpenWrt initramfs image and click update ("更新")
button to perform firmware update
4. On the initramfs image, perform sysupgrade with squashfs-sysupgrade
image
5. Wait ~120 seconds to complete flashing

Notes:

- configuration in DeviceTree of DBDC (Dual-Band-Dual-Concurrent) mode
for MT7615D chip is not supported in mt76 driver
- last 0x80000 (512 KiB) in NAND flash is not used on stock firmware
- stock firmware requires "customized uImage header" by MSTC
(MitraStar Technology Corp.), but U-Boot doesn't
  - uImage magic (0x0 - 0x3) : 0x434F4D43 (COMC)
  - header crc32 (0x4 - 0x7) : with data length and data crc32
  - image name (0x20 - 0x37) : model ID and firmware versions
  - data length (0x38 - 0x3b): kernel + rootfs
  - data crc32 (0x3c - 0x3f) : kernel + rootfs

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
Reviewed-by: Sungbo Eo <mans0n@gorani.run>
---
 target/linux/ramips/image/mt7621.mk | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'target/linux/ramips/image')

diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index ae83501c9d..b66842e880 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -65,6 +65,22 @@ define Build/iodata-factory
 	fi
 endef
 
+define Build/iodata-mstc-header
+  ( \
+    data_size_crc="$$(dd if=$@ ibs=64 skip=1 2>/dev/null | \
+      gzip -c | tail -c 8 | od -An -tx8 --endian little | tr -d ' \n')"; \
+    echo -ne "$$(echo $$data_size_crc | sed 's/../\\x&/g')" | \
+      dd of=$@ bs=8 count=1 seek=7 conv=notrunc 2>/dev/null; \
+  )
+  dd if=/dev/zero of=$@ bs=4 count=1 seek=1 conv=notrunc 2>/dev/null
+  ( \
+    header_crc="$$(dd if=$@ bs=64 count=1 2>/dev/null | \
+      gzip -c | tail -c 8 | od -An -N4 -tx4 --endian little | tr -d ' \n')"; \
+    echo -ne "$$(echo $$header_crc | sed 's/../\\x&/g')" | \
+      dd of=$@ bs=4 count=1 seek=1 conv=notrunc 2>/dev/null; \
+  )
+endef
+
 define Build/ubnt-erx-factory-image
 	if [ -e $(KDIR)/tmp/$(KERNEL_INITRAMFS_IMAGE) -a "$$(stat -c%s $@)" -lt "$(KERNEL_SIZE)" ]; then \
 		echo '21001:6' > $(1).compat; \
@@ -336,6 +352,22 @@ define Device/iodata_wn-ax1167gr
 endef
 TARGET_DEVICES += iodata_wn-ax1167gr
 
+define Device/iodata_wn-dx1167r
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  UBINIZE_OPTS := -E 5
+  UIMAGE_MAGIC := 0x434f4d43
+  KERNEL_SIZE := 4096k
+  IMAGE_SIZE := 51200k
+  DEVICE_VENDOR := I-O DATA
+  DEVICE_MODEL := WN-DX1167R
+  KERNEL_INITRAMFS := $(KERNEL_DTB) | custom-initramfs-uimage 3.10(XIK.1)b10 | \
+	iodata-mstc-header
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+  DEVICE_PACKAGES := kmod-mt7615e wpad-basic
+endef
+TARGET_DEVICES += iodata_wn-dx1167r
+
 define Device/iodata_wn-gx300gr
   IMAGE_SIZE := 7616k
   DEVICE_VENDOR := I-O DATA
-- 
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