[source] ramips: add support for TP-Link TL-WR840N v4 and TL-WR841N v13

LEDE Commits lede-commits at lists.infradead.org
Thu Jun 29 02:19:26 PDT 2017 

pepe2k pushed a commit to source.git, branch master:
https://git.lede-project.org/24043a0d2e01b9843c0dc529205b3b0bc7ecbbf9

commit 24043a0d2e01b9843c0dc529205b3b0bc7ecbbf9
Author: Piotr Dymacz <pepe2k at gmail.com>
AuthorDate: Wed Jun 21 14:16:15 2017 +0200

    ramips: add support for TP-Link TL-WR840N v4 and TL-WR841N v13
    
    TP-Link TL-WR840N v4 and TL-WR841N v13 are simple N300 routers with
    5-port FE switch and non-detachable antennas. Both are very similar
    and are based on MediaTek MT7628NN (aka MT7628N) WiSoC.
    
    The difference between these two models is in number of available
    LEDs, buttons and power input switch.
    
    This work is partially based on GitHub PR#974.
    
    Specification:
    
    - MT7628N/N (580 MHz)
    - 64 MB of RAM (DDR2)
    - 8 MB of FLASH
    - 2T2R 2.4 GHz
    - 5x 10/100 Mbps Ethernet
    - 2x external, non-detachable antennas
    - UART (J1) header on PCB (115200 8n1)
    - TL-WR840N v4: 5x LED (GPIO-controlled), 1x button
    - TL-WR841N v13: 8x LED (GPIO-controlled*), 2x button, power input
      switch
    
    * WAN LED in TL-WR841N v13 is a dual-color, dual-leads type which isn't
      (fully) supported by gpio-leds driver. This type of LED requires both
      GPIOs state change at the same time to select color or turn it off.
      For now, we support/use only the green part of the LED.
    
    Factory image notes:
    
    These devices use version 3 of TP-Link header, fortunately without RSA
    signature (at least in case of devices sold in Europe). The difference
    lays in the requirement for a non-zero value in "Additional Hardware
    Version" field. Ideally, it should match the value stored in vendor
    firmware header on device ("0x4"/"0x13" for these devices) but it seems
    that anything other than "0" is correct.
    
    We are able to prepare factory firwmare file which is accepted and
    (almost) correctly flashed from the vendor GUI. As it turned out, it
    accepts files without U-Boot image with second header at the beginning
    but due to some kind of bug in upgrade routine, flashed image gets
    corrupted before it's written to flash.
    
    Tests showed that the GUI upgrade routine copies value of "Additional
    Hardware Version" from existing firmware into offset "0x2023c" in
    provided file, _before_ storing it in flash. In case of vendor firmware
    upgrade files (which all include U-Boot image and two headers), this
    offset points to the matching field in kernel+rootfs firmware part
    header. Unfortunately, in case of LEDE factory image file which contains
    only one header, it points to the offset "0x2023c" in kernel image. This
    leads to a corrupted kernel and ends up with a "soft-bricked" device.
    
    The good news is that U-Boot in these devices contains well known tftp
    recovery mode, which can be triggered with "reset" button. What's more,
    in comparison to some of older MediaTek based TP-Link devices, this
    recovery mode doesn't write whole file at offset "0x0" in flash, without
    verifying provided file in advance. In case of recovery mode in these
    devices, first "0x20000" bytes are always skipped and "0x7a0000" bytes
    from rest of the file are stored in flash at offset "0x20000".
    
    Flash instruction:
    
    Until (if at all) TP-Link fixes described problem, the only way to flash
    LEDE image in these devices is to use tftp recovery mode in U-Boot:
    
    1. Configure PC with static IP 192.168.0.66/24 and tftp server.
    2. Rename "lede-ramips-mt7628-tl-wr84...-squashfs-tftp-recovery.bin"
       to "tp_recovery.bin" and place it in tftp server directory.
    3. Connect PC with one of LAN ports, press the reset button, power up
       the router and keep button pressed for around 6-7 seconds, until
       device starts downloading the file.
    4. Router will download file from server, write it to flash and reboot.
    
    To access U-Boot CLI, keep pressed "4" key during boot.
    
    Signed-off-by: Piotr Dymacz <pepe2k at gmail.com>
---
 target/linux/ramips/base-files/etc/board.d/01_leds | 13 ++++
 .../linux/ramips/base-files/etc/board.d/02_network |  2 +
 target/linux/ramips/base-files/etc/diag.sh         |  2 +
 target/linux/ramips/base-files/lib/ramips.sh       |  6 ++
 .../ramips/base-files/lib/upgrade/platform.sh      |  4 +-
 target/linux/ramips/dts/TL-WR840NV4.dts            | 62 +++++++++++++++
 target/linux/ramips/dts/TL-WR841NV13.dts           | 88 ++++++++++++++++++++++
 target/linux/ramips/dts/TL-WR84XN.dtsi             | 67 ++++++++++++++++
 target/linux/ramips/image/mt7628.mk                | 24 ++++++
 target/linux/ramips/mt7628/config-4.4              |  2 +
 target/linux/ramips/mt7628/config-4.9              |  2 +
 tools/firmware-utils/src/mktplinkfw2.c             | 16 ++++
 12 files changed, 287 insertions(+), 1 deletion(-)

diff --git a/target/linux/ramips/base-files/etc/board.d/01_leds b/target/linux/ramips/base-files/etc/board.d/01_leds
index 61f662b..61fbf0f 100755
--- a/target/linux/ramips/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/base-files/etc/board.d/01_leds
@@ -336,6 +336,19 @@ tiny-ac)
 	set_wifi_led "$board:orange:wifi"
 	set_usb_led "$board:green:usb"
 	;;
+tl-wr840n-v4)
+	set_wifi_led "$board:green:wlan"
+	ucidef_set_led_switch "lan" "lan" "$board:green:lan" "switch0" "0x1e"
+	ucidef_set_led_switch "wan" "wan" "$board:green:wan" "switch0" "0x01"
+	;;
+tl-wr841n-v13)
+	set_wifi_led "$board:green:wlan"
+	ucidef_set_led_switch "lan1" "lan1" "$board:green:lan1" "switch0" "0x2"
+	ucidef_set_led_switch "lan2" "lan2" "$board:green:lan2" "switch0" "0x4"
+	ucidef_set_led_switch "lan3" "lan3" "$board:green:lan3" "switch0" "0x8"
+	ucidef_set_led_switch "lan4" "lan4" "$board:green:lan4" "switch0" "0x10"
+	ucidef_set_led_switch "wan" "wan" "$board:green:wan" "switch0" "0x01"
+	;;
 vocore-8M|\
 vocore-16M)
 	ucidef_set_led_netdev "eth" "ETH" "vocore:orange:eth" "eth0"
diff --git a/target/linux/ramips/base-files/etc/board.d/02_network b/target/linux/ramips/base-files/etc/board.d/02_network
index 214db9d..22b231b 100755
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -169,6 +169,8 @@ ramips_setup_interfaces()
 	mzk-wdpr|\
 	rb750gr3|\
 	rt-n14u|\
+	tl-wr840n-v4|\
+	tl-wr841n-v13|\
 	ubnt-erx|\
 	ubnt-erx-sfp|\
 	ur-326n4g|\
diff --git a/target/linux/ramips/base-files/etc/diag.sh b/target/linux/ramips/base-files/etc/diag.sh
index 4c8f709..0f4e646 100644
--- a/target/linux/ramips/base-files/etc/diag.sh
+++ b/target/linux/ramips/base-files/etc/diag.sh
@@ -35,6 +35,8 @@ get_status_led() {
 	nbg-419n2|\
 	pwh2004|\
 	r6220|\
+	tl-wr840n-v4|\
+	tl-wr841n-v13|\
 	vr500|\
 	wnce2001|\
 	wndr3700v5|\
diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
index e146d1c..3eb66dc 100755
--- a/target/linux/ramips/base-files/lib/ramips.sh
+++ b/target/linux/ramips/base-files/lib/ramips.sh
@@ -487,6 +487,12 @@ ramips_board_detect() {
 	*"Timecloud")
 		name="timecloud"
 		;;
+	*"TL-WR840N v4")
+		name="tl-wr840n-v4"
+		;;
+	*"TL-WR841N v13")
+		name="tl-wr841n-v13"
+		;;
 	*"UBNT-ERX")
 		name="ubnt-erx"
 		;;
diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index 0753083..9b5da57 100755
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -230,7 +230,9 @@ platform_check_image() {
 		;;
 	c20i|\
 	c50|\
-	mr200)
+	mr200|\
+	tl-wr840n-v4|\
+	tl-wr841n-v13)
 		[ "$magic" != "03000000" ] && {
 			echo "Invalid image type."
 			return 1
diff --git a/target/linux/ramips/dts/TL-WR840NV4.dts b/target/linux/ramips/dts/TL-WR840NV4.dts
new file mode 100644
index 0000000..f139483
--- /dev/null
+++ b/target/linux/ramips/dts/TL-WR840NV4.dts
@@ -0,0 +1,62 @@
+/dts-v1/;
+
+#include "TL-WR84XN.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "tplink,tl-wr840n-v4", "mediatek,mt7628an-soc";
+	model = "TP-Link TL-WR840N v4";
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		lan {
+			label = "tl-wr840n-v4:green:lan";
+			gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
+		};
+
+		power {
+			label = "tl-wr840n-v4:green:power";
+			gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
+		};
+
+		wan {
+			label = "tl-wr840n-v4:green:wan";
+			gpios = <&gpio1 11 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan {
+			label = "tl-wr840n-v4:green:wlan";
+			gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
+		};
+
+		wps {
+			label = "tl-wr840n-v4:green:wps";
+			gpios = <&gpio1 5 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "p0led_an", "p2led_an", "perst", "refclk", "wdt", "wled_an";
+			ralink,function = "gpio";
+		};
+	};
+};
diff --git a/target/linux/ramips/dts/TL-WR841NV13.dts b/target/linux/ramips/dts/TL-WR841NV13.dts
new file mode 100644
index 0000000..40f833c
--- /dev/null
+++ b/target/linux/ramips/dts/TL-WR841NV13.dts
@@ -0,0 +1,88 @@
+/dts-v1/;
+
+#include "TL-WR84XN.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "tplink,tl-wr841n-v13", "mediatek,mt7628an-soc";
+	model = "TP-Link TL-WR841N v13";
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		rfkill {
+			label = "rfkill";
+			gpios = <&gpio1 5 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RFKILL>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		power {
+			label = "tl-wr841n-v13:green:power";
+			gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
+		};
+
+		wps {
+			label = "tl-wr841n-v13:green:wps";
+			gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
+		};
+
+		lan1 {
+			label = "tl-wr841n-v13:green:lan1";
+			gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+		};
+
+		lan2 {
+			label = "tl-wr841n-v13:green:lan2";
+			gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
+		};
+
+		lan3 {
+			label = "tl-wr841n-v13:green:lan3";
+			gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
+		};
+
+		lan4 {
+			label = "tl-wr841n-v13:green:lan4";
+			gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
+		};
+
+		wan_green {
+			label = "tl-wr841n-v13:green:wan";
+			gpios = <&gpio1 11 GPIO_ACTIVE_LOW>;
+		};
+
+		wan_orange {
+			label = "tl-wr841n-v13:orange:wan";
+			gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan {
+			label = "tl-wr841n-v13:green:wlan";
+			gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "gpio", "p0led_an", "p1led_an", "p2led_an", "p3led_an", "p4led_an", "perst", "refclk", "uart1", "wdt", "wled_an";
+			ralink,function = "gpio";
+		};
+	};
+};
diff --git a/target/linux/ramips/dts/TL-WR84XN.dtsi b/target/linux/ramips/dts/TL-WR84XN.dtsi
new file mode 100644
index 0000000..c9d0cdd
--- /dev/null
+++ b/target/linux/ramips/dts/TL-WR84XN.dtsi
@@ -0,0 +1,67 @@
+#include "mt7628an.dtsi"
+
+/ {
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	memory at 0 {
+		device_type = "memory";
+		reg = <0x0 0x4000000>;
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80 at 0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
+
+		partition at 0 {
+			label = "boot";
+			reg = <0x0 0x20000>;
+			read-only;
+		};
+
+		partition at 20000 {
+			label = "firmware";
+			reg = <0x20000 0x7a0000>;
+		};
+
+		partition at 7c0000 {
+			label = "config";
+			reg = <0x7c0000 0x10000>;
+			read-only;
+		};
+
+		factory: partition at 7d0000 {
+			label = "factory";
+			reg = <0x7d0000 0x30000>;
+			read-only;
+		};
+	};
+};
+
+&ehci {
+	status = "disabled";
+};
+
+&ohci {
+	status = "disabled";
+};
+
+&wmac {
+	status = "okay";
+	mtd-mac-address = <&factory 0xf100>;
+	mediatek,mtd-eeprom = <&factory 0x20000>;
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0xf100>;
+	mediatek,portmap = "llllw";
+};
diff --git a/target/linux/ramips/image/mt7628.mk b/target/linux/ramips/image/mt7628.mk
index f8bd2c1..fbfc37d 100644
--- a/target/linux/ramips/image/mt7628.mk
+++ b/target/linux/ramips/image/mt7628.mk
@@ -2,6 +2,8 @@
 # MT7628 Profiles
 #
 
+DEVICE_VARS += TPLINK_BOARD_ID
+
 define Device/mt7628
   DTS := MT7628
   BLOCKSIZE := 64k
@@ -26,6 +28,28 @@ define Device/miwifi-nano
 endef
 TARGET_DEVICES += miwifi-nano
 
+define Device/tl-wr840n-v4
+  DTS := TL-WR840NV4
+  IMAGE_SIZE := 7808k
+  DEVICE_TITLE := TP-Link TL-WR840N v4
+  TPLINK_BOARD_ID := TL-WR840NV4
+  KERNEL := $(KERNEL_DTB)
+  IMAGES += tftp-recovery.bin
+  IMAGE/factory.bin := tplink-v2-image
+  IMAGE/tftp-recovery.bin := pad-extra 128k | $$(IMAGE/factory.bin)
+  IMAGE/sysupgrade.bin := tplink-v2-image -s | append-metadata | \
+	check-size $$$$(IMAGE_SIZE)
+endef
+TARGET_DEVICES += tl-wr840n-v4
+
+define Device/tl-wr841n-v13
+  $(Device/tl-wr840n-v4)
+  DTS := TL-WR841NV13
+  DEVICE_TITLE := TP-Link TL-WR841N v13
+  TPLINK_BOARD_ID := TL-WR841NV13
+endef
+TARGET_DEVICES += tl-wr841n-v13
+
 define Device/gl-mt300n-v2
   DTS := GL-MT300N-V2
   IMAGE_SIZE := 16064k
diff --git a/target/linux/ramips/mt7628/config-4.4 b/target/linux/ramips/mt7628/config-4.4
index 1dd8c75..4b1bddb 100644
--- a/target/linux/ramips/mt7628/config-4.4
+++ b/target/linux/ramips/mt7628/config-4.4
@@ -138,6 +138,7 @@ CONFIG_MTD_NAND_MT7620=y
 CONFIG_MTD_PHYSMAP=y
 CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_TPLINK_FW=y
 CONFIG_MTD_SPLIT_TRX_FW=y
 CONFIG_MTD_SPLIT_UIMAGE_FW=y
 CONFIG_NEED_DMA_MAP_STATE=y
@@ -191,6 +192,7 @@ CONFIG_SPI_MT7621=y
 # CONFIG_SPI_RT2880 is not set
 CONFIG_SRCU=y
 CONFIG_SWCONFIG=y
+CONFIG_SWCONFIG_LEDS=y
 CONFIG_SYSCTL_EXCEPTION_TRACE=y
 CONFIG_SYS_HAS_CPU_MIPS32_R1=y
 CONFIG_SYS_HAS_CPU_MIPS32_R2=y
diff --git a/target/linux/ramips/mt7628/config-4.9 b/target/linux/ramips/mt7628/config-4.9
index 0c6026c..23ee65c 100644
--- a/target/linux/ramips/mt7628/config-4.9
+++ b/target/linux/ramips/mt7628/config-4.9
@@ -140,6 +140,7 @@ CONFIG_MTD_M25P80=y
 CONFIG_MTD_PHYSMAP=y
 CONFIG_MTD_SPI_NOR=y
 CONFIG_MTD_SPLIT_FIRMWARE=y
+CONFIG_MTD_SPLIT_TPLINK_FW=y
 CONFIG_MTD_SPLIT_TRX_FW=y
 CONFIG_MTD_SPLIT_UIMAGE_FW=y
 CONFIG_NEED_DMA_MAP_STATE=y
@@ -193,6 +194,7 @@ CONFIG_SPI_MT7621=y
 # CONFIG_SPI_RT2880 is not set
 CONFIG_SRCU=y
 CONFIG_SWCONFIG=y
+CONFIG_SWCONFIG_LEDS=y
 CONFIG_SWPHY=y
 CONFIG_SYSCTL_EXCEPTION_TRACE=y
 CONFIG_SYS_HAS_CPU_MIPS32_R1=y
diff --git a/tools/firmware-utils/src/mktplinkfw2.c b/tools/firmware-utils/src/mktplinkfw2.c
index b6dd670..14c5a49 100644
--- a/tools/firmware-utils/src/mktplinkfw2.c
+++ b/tools/firmware-utils/src/mktplinkfw2.c
@@ -208,6 +208,22 @@ static struct board_info boards[] = {
 		.hdr_ver	= 3,
 		.endian_swap	= true,
 	}, {
+		.id		= "TL-WR840NV4",
+		.hw_id		= 0x08400004,
+		.hw_rev		= 0x1,
+		.hw_ver_add	= 0x4,
+		.layout_id	= "8Mmtk",
+		.hdr_ver	= 3,
+		.endian_swap	= true,
+	}, {
+		.id		= "TL-WR841NV13",
+		.hw_id		= 0x08410013,
+		.hw_rev		= 0x268,
+		.hw_ver_add	= 0x13,
+		.layout_id	= "8Mmtk",
+		.hdr_ver	= 3,
+		.endian_swap	= true,
+	}, {
 		/* terminating entry */
 	}
 };

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