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说明

1. 改造 Mercury MW305R v3.0（芯片 9533）
2. OpenWRT 版本：LEDE 17
3. 环境：Ubuntu 16.04 x64
4. ➀ ➁ ➂... only use to match, please remove.

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第一步：修改硬件

1. 换 RAN 为 64M
2. 换 flash 为 16M
   注：本教程主要说明制作镜像部分，具体修改硬件步骤请参考：链接

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第二步：获取源码

使用以下命令克隆我当时使用的版本源码：

git clone -b lede-17.01 https://github.com/lede-project/source.git lede

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第三步：target profile 添加新路由器

修改文件：/target/linux/ar71xx/image/tp-link.mk
添加以下内容：

define Device/mc-mw305r-v3➀
  $(Device/tplink-16mlzma)
  DEVICE_TITLE := MERCURY MC-MW305R v3➁
  BOARDNAME := MC-MW305R-v3➂
  TPLINK_HWID := 0x30500003
endef
TARGET_DEVICES += mc-mw305r-v3➀

删除 /tmp 目录，使用以下命令配置：

make menuconfig

-> Atheros AR7xxx/AR9xxx
-> Target Profile
   [v] MERCURY MC-MW305R v3➁

在 Target System 里选择 Atheros AR7xxx/AR9xxx，然后在 Target Profile 里找到 MERCURY MC-MW305R v3 并选中。此时，编译一下，看看有没有错误。

make

make 成功后，/bin/targets/ar71xx/generic/ 目录下面会生成 MW305R 的 factory.bin，但是这时候下载到 flash 还不能启动，因为内核并没有支持 MW305R，继续下面的步骤。

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第四步：kernel arch machine 新增路由器

新建文件：/build_dir/target-mips_24kc_musl/linux-ar71xx_generic/linux-4.4.74/arch/mips/ath79/mach-mc-mw305r-v3.c
文件内容：

/* 
 *  Mercury MW305R v3 
 * 
 *  Copyright (C) 2014 Matthias Schiffer <mschiffer@universe-factory.net> 
 * 
 *  This program is free software; you can redistribute it and/or modify it 
 *  under the terms of the GNU General Public License version 2 as published 
 *  by the Free Software Foundation. 
 */

#include <linux/gpio.h>
#include <linux/platform_device.h>

#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>

#include "common.h"
#include "dev-eth.h"
#include "dev-gpio-buttons.h"
#include "dev-leds-gpio.h"
#include "dev-m25p80.h"
#include "dev-wmac.h"
#include "machtypes.h"

#define MC_MW305RV3_GPIO_LED_WLAN    13
#define MC_MW305RV3_GPIO_LED_WAN     4
#define MC_MW305RV3_GPIO_LED_LAN4    11
#define MC_MW305RV3_GPIO_LED_LAN3    14
#define MC_MW305RV3_GPIO_LED_LAN2    15
#define MC_MW305RV3_GPIO_LED_LAN1    16

#define MC_MW305RV3_GPIO_BTN_RESET   12
#define MC_MW305RV3_GPIO_BTN_WIFI    17

#define MC_MW305RV3_KEYS_POLL_INTERVAL     20    /* msecs */
#define MC_MW305RV3_KEYS_DEBOUNCE_INTERVAL (3 * MC_MW305RV3_KEYS_POLL_INTERVAL)

static const char *mc_mw305r_v3_part_probes[] = {
    "tp-link",
    NULL,
};

static struct flash_platform_data mc_mw305r_v3_flash_data = {
    .part_probes    = mc_mw305r_v3_part_probes,
};

static struct gpio_led mc_mw305r_v3_leds_gpio[] __initdata = {
    {
        .name        = "mercury:green:lan1",
        .gpio        = MC_MW305RV3_GPIO_LED_LAN1,
        .active_low  = 1,
    }, {
        .name        = "mercury:green:lan2",
        .gpio        = MC_MW305RV3_GPIO_LED_LAN2,
        .active_low  = 1,
    }, {
        .name        = "mercury:green:lan3",
        .gpio        = MC_MW305RV3_GPIO_LED_LAN3,
        .active_low  = 1,
    }, {
        .name        = "mercury:green:lan4",
        .gpio        = MC_MW305RV3_GPIO_LED_LAN4,
        .active_low  = 1,
    }, {
        .name        = "mercury:green:wan",
        .gpio        = MC_MW305RV3_GPIO_LED_WAN,
        .active_low  = 1,
    }, {
        .name        = "mercury:green:wlan",
        .gpio        = MC_MW305RV3_GPIO_LED_WLAN,
        .active_low  = 1,
        .default_trigger = "heartbeat",
    },
};

static struct gpio_keys_button mc_mw305r_v3_gpio_keys[] __initdata = {
    {
        .desc        = "Reset button",
        .type        = EV_KEY,
        .code        = KEY_RESTART,
        .debounce_interval = MC_MW305RV3_KEYS_DEBOUNCE_INTERVAL,
        .gpio        = MC_MW305RV3_GPIO_BTN_RESET,
        .active_low  = 1,
    }, {
        .desc        = "WIFI button",
        .type        = EV_KEY,
        .code        = KEY_RFKILL,
        .debounce_interval = MC_MW305RV3_KEYS_DEBOUNCE_INTERVAL,
        .gpio        = MC_MW305RV3_GPIO_BTN_WIFI,
        .active_low  = 1,
    }
};

static void __init tl_ap143_setup(void)
{
    u8 *mac = (u8 *) KSEG1ADDR(0x1f01fc00);
    u8 *ee = (u8 *) KSEG1ADDR(0x1fff1000);
    u8 tmpmac[ETH_ALEN];

    ath79_register_m25p80(&mc_mw305r_v3_flash_data);

    ath79_setup_ar933x_phy4_switch(false, false);

    ath79_register_mdio(0, 0x0);

    /* LAN */
    ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_GMII;
    ath79_eth1_data.duplex = DUPLEX_FULL;
    ath79_switch_data.phy_poll_mask |= BIT(4);
    ath79_init_mac(ath79_eth1_data.mac_addr, mac, 0);
    ath79_register_eth(1);

    /* WAN */
    ath79_switch_data.phy4_mii_en = 1;
    ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_MII;
    ath79_eth0_data.duplex = DUPLEX_FULL;
    ath79_eth0_data.speed = SPEED_100;
    ath79_eth0_data.phy_mask = BIT(4);
    ath79_init_mac(ath79_eth0_data.mac_addr, mac, 1);
    ath79_register_eth(0);

    ath79_init_mac(tmpmac, mac, 0);
    ath79_register_wmac(ee, tmpmac);
}

static void __init mc_mw305r_v3_setup➄(void)
{
    tl_ap143_setup();

    ath79_gpio_output_select(3, AR934X_GPIO_OUT_GPIO);
    ath79_gpio_output_select(4, AR934X_GPIO_OUT_GPIO);
    ath79_gpio_output_select(11, AR934X_GPIO_OUT_GPIO);
    ath79_gpio_output_select(14, AR934X_GPIO_OUT_GPIO);
    ath79_gpio_output_select(15, AR934X_GPIO_OUT_GPIO);
    ath79_gpio_output_select(16, AR934X_GPIO_OUT_GPIO);

    ath79_register_leds_gpio(-1, ARRAY_SIZE(mc_mw305r_v3_leds_gpio),
                 mc_mw305r_v3_leds_gpio);

    ath79_register_gpio_keys_polled(1, MC_MW305RV3_KEYS_POLL_INTERVAL,
                    ARRAY_SIZE(mc_mw305r_v3_gpio_keys),
                    mc_mw305r_v3_gpio_keys);
}

MIPS_MACHINE(ATH79_MACH_MC_MW305R➃, "MC-MW305R-v3➂", "MERCURY MC-MW305R v3➋",
         mc_mw305r_v3_setup➄);

修改文件：/build_dir/target-mips_24kc_musl/linux-ar71xx_generic/linux-4.4.74/arch/mips/ath79/Kconfig
添加以下内容：

config ATH79_MACH_MC_MW305R➅
  bool "MERCURY MC-MW305R v3 support➇"
  select SOC_AR933X
  select ATH79_DEV_ETH
  select ATH79_DEV_GPIO_BUTTONS
  select ATH79_DEV_LEDS_GPIO
  select ATH79_DEV_M25P80
  select ATH79_DEV_WMAC
  help
    Say 'Y' here if you want your kernel to support the
    MERCURY MC-MW305R v3➋.

修改文件：/build_dir/target-mips_24kc_musl/linux-ar71xx_generic/linux-4.4.74/arch/mips/ath79/machtypes.h
添加以下内容：

ATH79_MACH_MC_MW305R➃,

修改文件：/build_dir/target-mips_24kc_musl/linux-ar71xx_generic/linux-4.4.74/arch/mips/ath79/Makefile
添加以下内容：

obj-$(CONFIG_ATH79_MACH_MC_MW305R➅)  += mach-mc-mw305r-v3➊.o

使用以下命令配置：

make kernel_menuconfig

-> Machine selection
-> Atheros AR71XX/AR724X/AR913X machine selection
   MERCURY MC-MW305R v3 support➇

此时，编译一次看看有没有问题：

make

make 成功后，如果直接固件下载到 flash，已经能启动了，但会出现网络问题，继续看第五步。

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第五步：network 配置问题（ar71xx系列）

修改文件：/target/linux/ar71xx/base-files/lib/ar71xx.sh
添加以下内容：

*"MC-MW305R v3➋"*)
    name="mc-mw305r-v3➆"
    ;;

修改文件：/target/linux/ar71xx/base-files/etc/board.d/02_network
添加以下内容：

mc-mw305r-v3➆)
    ucidef_set_interfaces_lan_wan "eth0.1" "eth1"
    ucidef_add_switch "switch0" \
        "0@eth0" "1:lan:4" "2:lan:3" "3:lan:2" "4:lan:1"
    ;;

此时，再编译一次看看有没有问题：

make

make 成功后，如果下载固件到 flash，网络已经没问题了，但是会发现 LED 灯工作得不正常，继续看第六步。

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第六步：LED 灯问题

修改文件：/target/linux/ar71xx/base-files/etc/board.d/01_leds
添加以下内容：

mc-mw305r-v3➆)
    ucidef_set_led_netdev "wan" "WAN" "mercury:green:wan" "eth1"
    ucidef_set_led_switch "lan0" "LAN0" "mercury:green:lan1" "switch0" "0x10"
    ucidef_set_led_switch "lan1" "LAN1" "mercury:green:lan2" "switch0" "0x08"
    ucidef_set_led_switch "lan2" "LAN2" "mercury:green:lan3" "switch0" "0x04"
    ucidef_set_led_switch "lan3" "LAN3" "mercury:green:lan4" "switch0" "0x02"
    ucidef_set_led_wlan "wlan" "WLAN" "mercury:green:wlan" "phy0tpt"
    ;;

这时候已经大功告成了，最后编译一次：

make

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