ramips: add Xiaomi Mi Router 3G support

This commit adds support for Xiaomi Mi WiFi Router 3G.

Short specification:
 - MT7621AT + MT7603EN + 7612EN
 - 256MB DDR3 RAM
 - 128MB NAND flash
 - 1+2 x 1000M Ethernet
 - 1x USB 3.0 port
 - reset button
 - yellow, blue, red leds

Installation through telnet/ssh:
- copy lede-ramips-mt7621-mir3g-squashfs-kernel1.bin and
lede-ramips-mt7621-mir3g-squashfs-rootfs0.bin to usb disk or wget it
from LEDE download site to /tmp
- switch to /extdisks/sda1/ (if copied to USB drive) or to /tmp if
wgetted from LEDE download site
- run: mtd write lede-ramips-mt7621-mir3g-squashfs-kernel1.bin kernel1
- run: mtd write lede-ramips-mt7621-mir3g-squashfs-rootfs0.bin rootfs0
- run: mtd erase kernel0
- run: reboot

Originally stock firmware has following partitions:
 - ...
 - kernel0 (primary kernel image)
 - kernel1 (secondary kernel image, used by u-boot in failsafe routine)
 - rootfs0 (primary rootfs)
 - rootfs1 (secondary rootfs in case primary fails)
 - overlay (used as ubi overlay)

This commit squashes rootfs0, rootfs1 and overlay partitions into 1, so
it can be used by LEDE fully for package installation, resulting in 117,5MiB.

This device lacks hw watchdog, so adding softdog instead (stock does the same).

Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>

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 a2d5c2e7dec5d082c68943b9307f0bf7e67a4afd..ff5d156f2c259e6b28ffe882ca30afa7f6ea0b07 100644 (file)
--- a/target/linux/ramips/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/base-files/etc/board.d/01_leds
@@ -242,6 +242,10 @@ miniembplug)
        set_wifi_led "$board:red:wlan"
        set_usb_led "$board:green:mobile"
        ;;
+mir3g)
+       ucidef_set_led_netdev "eth" "Ethernet" "$board:red:wan" "eth0"
+       set_usb_led "$board:blue:usb"
+       ;;
 miwifi-mini)
        ucidef_set_led_default "power" "power" "$board:red:status" "1"
        ;;

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 2f001134a2b2ac2153e67ffa7e904b7da4242470..df70a8b2ec8ff5f655eec99ae5ae35820b97400c 100755 (executable)
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -122,6 +122,10 @@ ramips_setup_interfaces()
                ucidef_add_switch "switch0" \
                        "0:lan" "1:lan" "2:lan" "3:lan" "4:wan" "6@eth0"
                ;;
+       mir3g)
+               ucidef_add_switch "switch0" \
+                       "1:wan" "2:lan:2" "3:lan:1" "6@eth0"
+               ;;
        psg1218b)
                ucidef_add_switch "switch0" \
                        "0:lan:3" "1:lan:2" "2:lan:1" "3:wan" "6@eth0"
@@ -421,6 +425,9 @@ ramips_setup_macs()
                lan_mac=$(mtd_get_mac_binary factory_info 13)
                wan_mac=$(macaddr_add "$lan_mac" 1)
                ;;
+       mir3g)
+               lan_mac=$(mtd_get_mac_binary Factory e006)
+               ;;
        miwifi-mini)
                wan_mac=$(cat /sys/class/net/eth0/address)
                lan_mac=$(macaddr_setbit_la "$wan_mac")

diff --git a/target/linux/ramips/base-files/etc/diag.sh b/target/linux/ramips/base-files/etc/diag.sh
index 5278830eb7348d27229de33773bf58a97ffa0224..960e189283dc1e5847236dccecab9b13c14e9aed 100644 (file)
--- a/target/linux/ramips/base-files/etc/diag.sh
+++ b/target/linux/ramips/base-files/etc/diag.sh
@@ -177,6 +177,9 @@ get_status_led() {
        m4-8M)
                status_led="m4:blue:status"
                ;;
+       mir3g)
+               status_led="$board:yellow:status"
+               ;;
        miwifi-mini|\
        zte-q7)
                status_led="$board:red:status"

diff --git a/target/linux/ramips/base-files/lib/ramips.sh b/target/linux/ramips/base-files/lib/ramips.sh
index a3f376e6accca0dd25ddbdb292c575b98fa730df..fe66a87c2e3c8ec550ab10ba002c7c675b79efb8 100755 (executable)
--- a/target/linux/ramips/base-files/lib/ramips.sh
+++ b/target/linux/ramips/base-files/lib/ramips.sh
@@ -286,6 +286,9 @@ ramips_board_detect() {
        *"Mercury MAC1200R v2")
                name="mac1200rv2"
                ;;
+       *"Mi Router 3G")
+               name="mir3g"
+               ;;
        *"MicroWRT")
                name="microwrt"
                ;;

diff --git a/target/linux/ramips/base-files/lib/upgrade/platform.sh b/target/linux/ramips/base-files/lib/upgrade/platform.sh
index 8977381c86d00d3e10394c43f3fe7b9474191e76..3cb1d19a2871f6fd4d8d105bc926b33fdebcb2b5 100755 (executable)
--- a/target/linux/ramips/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh
@@ -251,6 +251,7 @@ platform_check_image() {
                return 0
                ;;
        hc5962|\
+       mir3g|\
        r6220)
                # these boards use metadata images
                return 0
@@ -297,6 +298,7 @@ platform_do_upgrade() {
 
        case "$board" in
        hc5962|\
+       mir3g|\
        r6220|\
        ubnt-erx|\
        ubnt-erx-sfp)

diff --git a/target/linux/ramips/dts/MIR3G.dts b/target/linux/ramips/dts/MIR3G.dts
new file mode 100644 (file)
index 0000000..0cdb6d5
--- /dev/null
+++ b/target/linux/ramips/dts/MIR3G.dts
@@ -0,0 +1,163 @@
+/dts-v1/;
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+       compatible = "xiaomi,mir3g", "mediatek,mt7621-soc";
+       model = "Xiaomi Mi Router 3G";
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x10000000>;
+       };
+
+       chosen {
+               bootargs = "console=ttyS0,115200n8";
+       };
+
+       gpio-leds {
+               compatible = "gpio-leds";
+
+               wan {
+                       label = "mir3g:red:wan";
+                       gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
+               };
+
+               usb {
+                       label = "mir3g:blue:usb";
+                       gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
+               };
+
+               status {
+                       label = "mir3g:yellow:status";
+                       gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+               };
+       };
+
+       gpio-keys-polled {
+               compatible = "gpio-keys-polled";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               poll-interval = <20>;
+
+               reset {
+                       label = "reset";
+                       gpios = <&gpio0 18 GPIO_ACTIVE_HIGH>;
+                       linux,code = <KEY_RESTART>;
+               };
+       };
+};
+
+&nand {
+       status = "okay";
+
+       partition@0 {
+               label = "Bootloader";
+               reg = <0x0 0x80000>;
+               read-only;
+       };
+
+       partition@80000 {
+               label = "Config";
+               reg = <0x80000 0x40000>;
+               read-only;
+       };
+
+       partition@c0000 {
+               label = "Bdata";
+               reg = <0xc0000 0x40000>;
+               read-only;
+       };
+
+       factory: partition@100000 {
+               label = "Factory";
+               reg = <0x100000 0x40000>;
+               read-only;
+       };
+
+       partition@140000 {
+               label = "crash";
+               reg = <0x140000 0x40000>;
+               read-only;
+       };
+
+       partition@180000 {
+               label = "crash_syslog";
+               reg = <0x180000 0x40000>;
+               read-only;
+       };
+
+       partition@1c0000 {
+               label = "reserved0";
+               reg = <0x1c0000 0x40000>;
+               read-only;
+       };
+
+       /* 
+        * kernel0 partition should be erased, so 
+        * u-boot in failsafe routine switches 
+        * to next one looking for kernel image.
+        * To remind about this fact rename kernel0
+        * into kernel_erase.
+        */
+       partition@200000 {
+               label = "kernel_erase";
+               reg = <0x200000 0x400000>;
+       };
+
+       partition@600000 {
+               label = "kernel";
+               reg = <0x600000 0x400000>;
+       };
+
+       /* ubi partition is the result of squashing
+        * next consequent stock partitions:
+        * - rootfs0 (rootfs partition for stock kernel0), 
+        * - rootfs1 (rootfs partition for stock failsafe kernel1), 
+        * - overlay (used as ubi overlay in stock fw)
+        * resulting 117,5MiB space for packages.
+        */
+       partition@a00000 {
+               label = "ubi";
+               reg = <0xa00000 0x7580000>;
+       };
+};
+
+&pcie {
+       status = "okay";
+
+       pcie0 {
+               wifi@14c3,7603 {
+                       compatible = "pci14c3,7603";
+                       reg = <0x0000 0 0 0 0>;
+                       mediatek,mtd-eeprom = <&factory 0x0000>;
+                       ieee80211-freq-limit = <2400000 2500000>;
+               };
+       };      
+
+       pcie1 {
+               wifi@14c3,7662 {
+                       compatible = "pci14c3,7662";
+                       reg = <0x0000 0 0 0 0>;
+                       mediatek,mtd-eeprom = <&factory 0x8000>;
+                       ieee80211-freq-limit = <5000000 6000000>;
+               };
+       };
+};
+
+&ethernet {
+       mtd-mac-address = <&factory 0xe000>;
+       mediatek,portmap = "lwlll";
+};
+
+&pinctrl {
+       state_default: pinctrl0 {
+               gpio {
+                       ralink,group = "jtag", "uart3", "wdt";
+                       ralink,function = "gpio";
+               };
+       };
+};

diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index a67facb83bd76b0206dbc05580adc660d155c2e1..779616292dabd9a2d21be0f1c254a578f53562d0 100644 (file)
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -105,6 +105,26 @@ define Device/k2p
 endef
 TARGET_DEVICES += k2p
 
+define Device/mir3g
+  DTS := MIR3G
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  KERNEL_SIZE := 4096k
+  KERNEL := $(KERNEL_DTB) | uImage lzma
+  IMAGE_SIZE := 32768k
+  UBINIZE_OPTS := -E 5
+  IMAGES := sysupgrade.tar kernel1.bin rootfs0.bin
+  IMAGE/kernel1.bin := append-kernel
+  IMAGE/rootfs0.bin := append-ubi | check-size $$$$(IMAGE_SIZE)
+  IMAGE/sysupgrade.tar := sysupgrade-tar | append-metadata
+  DEVICE_TITLE := Xiaomi Mi Router 3G
+  SUPPORTED_DEVICES += R3G
+  DEVICE_PACKAGES := \
+       kmod-mt7603 kmod-mt76x2 kmod-usb3 kmod-usb-ledtrig-usbport wpad-mini \
+       kmod-softdog
+endef
+TARGET_DEVICES += mir3g
+
 define Device/mt7621
   DTS := MT7621
   BLOCKSIZE := 64k