From f285e8634c57d28aa970b80c5c59e85485f35c7d Mon Sep 17 00:00:00 2001
From: Birger Koblitz <mail@birger-koblitz.de>
Date: Thu, 19 Sep 2019 21:33:59 +0200
Subject: ramips: add support for Edimax RG21S
MIME-Version: 1.0
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SoC:	MediaTek MT7621AT dual-core @ 880MHz
RAM:	256M (Nanya NT5CC128M)
FLASH:	16MB (Macronix MX25L12835F)
WiFi:	- 2.4GHz MediaTek MT7615N bgn
	- 5GHz MediaTek MT7615N nac
Switch: SoC integrated Gigabit Switch (4 x LAN, 1 x WAN)
USB:	No
BTN:	Reset, WPS
LED:	4 red LEDs, indistinguishable when casing closed
UART: 	UART is present as Pads marked J1 on the PCB.
	3.3V - RX - GND - TX / 57600-8N1
	3.3V is the square pad

Installation
------------
Update the factory image via the OEM web-interface
(by default:http://192.168.1.1)
The sysupgrade image can be installed via TFTP from
the U-Boot bootloader. Connect ethernet port 2.

Signed-off-by: Birger Koblitz <mail@birger-koblitz.de>
[flash node rename, EDIMAX -> Edimax, complete device model name]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
---
 target/linux/ramips/image/mt7621.mk | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

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

diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 986fe5e2f8..623d5c94dd 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -30,6 +30,25 @@ define Build/elecom-wrc-factory
   mv $@.new $@
 endef
 
+define Build/elx-header
+  $(eval hw_id=$(word 1,$(1)))
+  $(eval xor_pattern=$(word 2,$(1)))
+  ( \
+    echo -ne "\x00\x00\x00\x00\x00\x00\x00\x03" | \
+      dd bs=42 count=1 conv=sync; \
+    hw_id="$(hw_id)"; \
+    echo -ne "\x$${hw_id:0:2}\x$${hw_id:2:2}\x$${hw_id:4:2}\x$${hw_id:6:2}" | \
+      dd bs=20 count=1 conv=sync; \
+    echo -ne "$$(printf '%08x' $$(stat -c%s $@) | fold -s2 | xargs -I {} echo \\x{} | tr -d '\n')" | \
+      dd bs=8 count=1 conv=sync; \
+    echo -ne "$$($(STAGING_DIR_HOST)/bin/mkhash md5 $@ | fold -s2 | xargs -I {} echo \\x{} | tr -d '\n')" | \
+      dd bs=58 count=1 conv=sync; \
+  ) > $(KDIR)/tmp/$(DEVICE_NAME).header
+  $(call Build/xor-image,-p $(xor_pattern) -x)
+  cat $(KDIR)/tmp/$(DEVICE_NAME).header $@ > $@.new
+  mv $@.new $@
+endef
+
 define Build/iodata-factory
   $(eval fw_size=$(word 1,$(1)))
   $(eval fw_type=$(word 2,$(1)))
@@ -173,6 +192,20 @@ define Device/d-team_pbr-m1
 endef
 TARGET_DEVICES += d-team_pbr-m1
 
+define Device/edimax_rg21s
+  MTK_SOC := mt7621
+  IMAGE_SIZE := 16064k
+  DEVICE_VENDOR := Edimax
+  DEVICE_MODEL := Gemini AC2600 RG21S
+  IMAGES += factory.bin
+  IMAGE/factory.bin := \
+    $$(sysupgrade_bin) | check-size $$$$(IMAGE_SIZE) | \
+    elx-header 02020038 8844A2D168B45A2D
+  DEVICE_PACKAGES := \
+        kmod-mt7615e wpad-basic
+endef
+TARGET_DEVICES += edimax_rg21s
+
 define Device/elecom_wrc-1167ghbk2-s
   MTK_SOC := mt7621
   IMAGE_SIZE := 15488k
-- 
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