HG255D is a kind of popular low-end home gateway in China, this patch bring the 
the trunk support for it. It is adapted from a local Chinese community 
(www.right.com.cn), so credit should given to them.

This patch is tested to work except trivial LED issues.

Signed-off-by: Leon Xu <ylx...@gmail.com>
---
diff -NaurbB 
trunk/target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom 
b/target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
--- 
trunk/target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom    
    2013-07-20 17:32:55.082403664 +0800
+++ b/target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom    
2013-07-11 22:47:42.954107000 +0800
@@ -104,7 +104,8 @@
        mzk-w300nh2 | \
        ur-326n4g | \
        ur-336un | \
-       xdxrn502j)
+       xdxrn502j | \
+       hg255d)
                rt2x00_eeprom_extract "factory" 0 512
                ;;
 
diff -NaurbB trunk/target/linux/ramips/base-files/etc/uci-defaults/01_leds 
b/target/linux/ramips/base-files/etc/uci-defaults/01_leds
--- trunk/target/linux/ramips/base-files/etc/uci-defaults/01_leds       
2013-07-20 17:32:55.135403721 +0800
+++ b/target/linux/ramips/base-files/etc/uci-defaults/01_leds   2013-07-11 
22:49:19.699489000 +0800
@@ -124,6 +124,11 @@
        wcr-150gn)
                set_usb_led "wcr150gn:amber:user"
                ;;
+       hg255d)
+       set_wifi_led "hg255d:wlan"
+       set_usb_led "hg255d:usb"
+       ucidef_set_led_netdev "eth" "Internet" "hg255d:internet" "eth0.2"
+               ;;
        wnce2001)
                set_wifi_led "netgear:green:wlan"
                ;;
diff -NaurbB trunk/target/linux/ramips/base-files/etc/uci-defaults/02_network 
b/target/linux/ramips/base-files/etc/uci-defaults/02_network
--- trunk/target/linux/ramips/base-files/etc/uci-defaults/02_network    
2013-07-20 17:32:55.182403772 +0800
+++ b/target/linux/ramips/base-files/etc/uci-defaults/02_network        
2013-07-17 23:48:00.407189000 +0800
@@ -192,6 +192,7 @@
                ;;
 
        rt-n13u | \
+       hg256d  | \
        fonera20n)
                lan_mac=$(mtd_get_mac_binary factory 40)
                wan_mac=$(macaddr_add "$lan_mac" 1)
diff -NaurbB trunk/target/linux/ramips/base-files/lib/ramips.sh 
b/target/linux/ramips/base-files/lib/ramips.sh
--- trunk/target/linux/ramips/base-files/lib/ramips.sh  2013-07-20 
17:32:54.870403435 +0800
+++ b/target/linux/ramips/base-files/lib/ramips.sh      2013-07-11 
22:50:23.130741000 +0800
@@ -217,6 +217,9 @@
        *"XDX RN502J")
                name="xdxrn502j"
                ;;
+       *"HG255D")
+               name="hg255d"
+               ;;
        *)
                name="generic"
                ;;
diff -NaurbB trunk/target/linux/ramips/base-files/lib/upgrade/platform.sh 
b/target/linux/ramips/base-files/lib/upgrade/platform.sh
--- trunk/target/linux/ramips/base-files/lib/upgrade/platform.sh        
2013-07-20 17:32:54.877403443 +0800
+++ b/target/linux/ramips/base-files/lib/upgrade/platform.sh    2013-07-19 
22:09:09.776006000 +0800
@@ -42,6 +42,7 @@
        rt-n13u | \
        freestation5 | \
        hw550-3g | \
+       hg255d | \
        mofi3500-3gn | \
        mpr-a2 | \
        mzk-w300nh2 | \
diff -NaurbB trunk/target/linux/ramips/dts/HG255D.dts 
b/target/linux/ramips/dts/HG255D.dts
--- trunk/target/linux/ramips/dts/HG255D.dts    1970-01-01 08:00:00.000000000 
+0800
+++ b/target/linux/ramips/dts/HG255D.dts        2013-07-18 21:24:30.948375000 
+0800
@@ -0,0 +1,120 @@
+/dts-v1/;
+
+/include/ "rt3050.dtsi"
+
+/ {
+       compatible = "HG255D", "ralink,rt3052-soc";
+       model = "HuaWei HG255D";
+
+       palmbus@10000000 {
+               sysc@0 {
+                       ralink,pinmux = "i2c", "spi", "uartlite", "jtag", 
"mdio", "sdram", "rgmii";
+                       ralink,uartmux = "gpio";
+                       ralink,wdtmux = <1>;
+               };
+
+               gpio0: gpio@600 {
+                       status = "okay";
+               };
+       };
+
+       cfi@1f000000 {
+               compatible = "cfi-flash";
+               reg = <0x1f000000 0x1000000>;
+
+               bank-width = <2>;
+               device-width = <2>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+
+               partition@0 {
+                       label = "u-boot";
+                       reg = <0x0 0x40000>;
+                       read-only;
+               };
+
+               partition@30000 {
+                       label = "u-boot-env";
+                       reg = <0x40000 0x20000>;
+                       read-only;
+               };
+
+               factory: partition@60000 {
+                       label = "factory";
+                       reg = <0x60000 0x20000>;
+                       read-only;
+               };
+
+               partition@80000 {
+                       label = "firmware";
+                       reg = <0x80000 0xf80000>;
+               };
+       };
+
+       gpio-leds {
+               compatible = "gpio-leds";
+               power {
+                       label = "hg255d:power";
+                       gpios = <&gpio0 8 1>;
+               };
+               internet {
+                       label = "hg255d:internet";
+                       gpios = <&gpio0 13 1>;
+               };
+               wifi {
+                       label = "hg255d:wlan";
+                       gpios = <&gpio0 14 1>;
+               };
+               usb {
+                       label = "hg255d:usb";
+                       gpios = <&gpio0 9 1>;
+               };
+               wps {
+                       label = "hg255d:wps";
+                       gpios = <&gpio0 12 1>;
+               };
+               voice {
+                       label = "hg255d:voice";
+                       gpios = <&gpio0 5 1>;
+               };
+       };
+
+       gpio-keys-polled {
+               compatible = "gpio-keys-polled";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               poll-interval = <10>;
+               reset {
+                       label = "reset";
+                       gpios = <&gpio0 4 1>;
+                       linux,code = <0x198>;
+               };
+               wps {
+                       label = "wps";
+                       gpios = <&gpio0 10 1>;
+                       linux,code = <0x211>;
+               };
+               rfkill {
+                       label = "rfkill";
+                       gpios = <&gpio0 0 1>;
+                       linux,code = <0xf7>;
+               };
+       };
+
+       ethernet@10100000 {
+               status = "okay";
+       };
+
+       esw@10110000 {
+               status = "okay";
+               ralink,portmap = <0x2f>;
+       };
+
+       wmac@10180000 {
+               status = "okay";
+       };
+
+       otg@101c0000 {
+               status = "okay";
+       };
+};
diff -NaurbB trunk/target/linux/ramips/image/Makefile 
b/target/linux/ramips/image/Makefile
--- trunk/target/linux/ramips/image/Makefile    2013-07-20 17:32:52.403400790 
+0800
+++ b/target/linux/ramips/image/Makefile        2013-07-13 16:13:45.581761000 
+0800
@@ -114,6 +114,15 @@
 BuildFirmware/Default8M/squashfs=$(call 
BuildFirmware/OF,$(1),$(2),$(3),$(ralink_default_fw_size_8M),$(4))
 BuildFirmware/Default8M/initramfs=$(call 
BuildFirmware/OF/initramfs,$(1),$(2),$(3),$(4))
 
+# Build images for default ralink layout for 16MB flash
+# kernel + roots = 0xf80000
+# $(1) = squashfs/initramfs
+# $(2) = lowercase board name
+# $(3) = dts file
+ralink_default_fw_size_16M=16252928
+BuildFirmware/Default16M/squashfs=$(call 
BuildFirmware/OF,$(1),$(2),$(3),$(ralink_default_fw_size_16M),$(4))
+BuildFirmware/Default16M/initramfs=$(call 
BuildFirmware/OF/initramfs,$(1),$(2),$(3),$(4))
+
 # Build images for a custom sized flash layout
 # $(1) = squashfs/initramfs
 # $(2) = lowercase board name
@@ -328,6 +337,8 @@
 
 Image/Build/Profile/RT-N13U=$(call 
BuildFirmware/Default8M/$(1),$(1),rt-n13u,RT-N13U)
 
+Image/Build/Profile/HG255D=$(call 
BuildFirmware/Default16M/$(1),$(1),hg255d,HG255D)
+
 Image/Build/Profile/FREESTATION5=$(call 
BuildFirmware/Default8M/$(1),$(1),freestation5,FREESTATION5)
 
 Image/Build/Profile/MOFI3500-3GN=$(call 
BuildFirmware/Default8M/$(1),$(1),mofi3500-3gn,MOFI3500-3GN)
@@ -460,6 +471,7 @@
        $(call Image/Build/Profile/F5D8235V2,$(1))
        $(call Image/Build/Profile/FONERA20N,$(1))
        $(call Image/Build/Profile/FREESTATION5,$(1))
+       $(call Image/Build/Profile/HG255D,$(1))
        $(call Image/Build/Profile/HW550-3G,$(1))
        $(call Image/Build/Profile/MOFI3500-3GN,$(1))
        $(call Image/Build/Profile/MPRA2,$(1))
diff -NaurbB trunk/target/linux/ramips/rt305x/profiles/hg255d.mk 
b/target/linux/ramips/rt305x/profiles/hg255d.mk
--- trunk/target/linux/ramips/rt305x/profiles/hg255d.mk 1970-01-01 
08:00:00.000000000 +0800
+++ b/target/linux/ramips/rt305x/profiles/hg255d.mk     2013-07-11 
22:46:48.735895000 +0800
@@ -0,0 +1,17 @@
+#
+# Copyright (C) 2010 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+define Profile/HG255D
+       NAME:=HuaWei HG255D
+       PACKAGES:=kmod-leds-gpio kmod-rt2800-pci wpad-mini 
kmod-usb-rt305x-dwc_otg
+endef
+
+define Profile/HG255D/Description
+       Package set for HuaWei HG255D.
+endef
+
+$(eval $(call Profile,HG255D))
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