OpenWRT添加 Target Profile 选项

引言

在下载的原始的OpenWRT源码中，通过Target Profile ------>选择具体的路由器型号，但是OpenWRT源码中给出的路由器型号较少，经常不能满足实际的需求，这里所说的不能满足的要求体现在了两点，第一为默认的路由器RAM容量与实际的不符合，第二为默认的路由器Flash容量与实际的不一致。本文章以MT7688芯片为例，增加一个基于此芯片的路由器选项，具体的配置为Flash 32M; RAM 128M。

一. 编写对应的.dts文件

在OpenWRT源码目录〜/ openwrt / target / linux / rampis / dts中，存放着.dtsi和对应的.dts文件，MT7688对应的.dtsi文件为 mt7628an.dtsi, 源码里的Target Profile ------> 有默认选项、LinkIt7688两个，LinkIt7688在〜/ openwrt / target / linux / rampis / dts中对应的dts文件为 LINKIT7688.dts,模仿它的dts文件写法在新建一个 XiaoYin32128.dts 文件，其中的内容如下：

/dts-v1/;
 
/include/ "mt7628an.dtsi"
 
/ {
	compatible = "mediatek,XiaoYin", "mediatek,mt7628an-soc";
	model = "XiaoYin";
 
	chosen {
		bootargs = "console=ttyS0,57600";
	};
 
	memory@0 {
		device_type = "memory";
		reg = <0x0 0x8000000>;
	};
 
	pinctrl {
		state_default: pinctrl0 {
			gpio {
				ralink,group = "gpio","perst", "refclk","spis","wled_an","ephy_p0","ephy_p1","ephy_p2","ephy_p3","ephy_p4","wdt";
				ralink,function = "gpio";
			};
			
			uart2 {
				ralink,group = "uart2";
				ralink,function = "uart2";
			};
			
			uart1 {
				ralink,group = "uart1";
				ralink,function = "uart1";
			};
 
			uart0 {
				ralink,group = "uart0";
				ralink,function = "uart0";
			};
			
			i2c {
				ralink,group = "i2c";
				ralink,function = "i2c";
			};
		};
	};
 
	palmbus@10000000 {
		spi@b00 {
			status = "okay";
 
			pinctrl-names = "default";
			pinctrl-0 = <&spi_pins>, <&spi_cs1_pins>;
 
			m25p80@0 {
				#address-cells = <1>;
				#size-cells = <1>;
				compatible = "w25q256";
				reg = <0 0>;
				linux,modalias = "m25p80", "w25q256";
				spi-max-frequency = <40000000>;
				m25p,chunked-io = <31>;
 
				partition@0 {
					label = "u-boot";
					reg = <0x0 0x30000>;
					read-only;
				};
 
				partition@30000 {
					label = "u-boot-env";
					reg = <0x30000 0x10000>;
				};
 
				factory: partition@40000 {
					label = "factory";
					reg = <0x40000 0x10000>;
				};
 
				partition@50000 {
					label = "firmware";
					reg = <0x50000 0x1fb0000>; 
				};
			};
 
			spidev@1 {
				#address-cells = <1>;
				#size-cells = <1>;
				compatible = "spidev";
				reg = <1 0>;
				spi-max-frequency = <40000000>;
			};
		};
 
		i2c@900 {
			status = "okay";
		};
 
		uart1@d00 {
			status = "okay";
		};
 
		uart2@e00 {
			status = "okay";
		};
 
		pwm@5000 {
			status = "okay";
		};
	};
 
	ethernet@10100000 {
		mtd-mac-address = <&factory 0x28>;
	};
	
	
	gpio-leds {
		compatible = "gpio-leds";
 
		sys {
			label = "sys";
			gpios = <&gpio1 9 0>;
			default-state = "off";
		};
 
		wifi {
			label = "wifi";
			gpios = <&gpio1 12 0>;
			default-state = "off";
		};
 
		wan {
			label = "wan";
			gpios = <&gpio1 11 0>;
			default-state = "off";
		};
 
		zpower {
			label = "zpower";
			gpios = <&gpio1 10 0>;
			default-state = "off";
		};
	};
 
	gpio-keys-polled {
			compatible = "gpio-keys-polled";
			#address-cells = <1>;
			#size-cells = <0>;
			poll-interval = <20>;
			reset {
					label = "reset";
					gpios = <&gpio1 6 1>;
					linux,code = <0x198>;
			};
	};
};

  在上述的内容中其中两点需要特别注意，其一是设置RAM大小

	memory@0 {
		device_type = "memory";
		//reg = <0x0 0x4000000>; //64MB
		reg = <0x0 0x8000000>; //128MB
	};

reg = <0x0 0x8000000>; 代表设置的RAM大小为128M

其二是设置Flash大小

				partition@50000 {
					label = "firmware";
					//reg = <0x50000 0x07b0000>; //8MB
					reg = <0x50000 0x1fb0000>; //32MB
				};

reg = <0x50000 0x1fb0000>; 代表设置的Flash大小为32MB 

二. 修改Makefile文件

该Makefile文件存放在 ～/openwrt/target/linux/ramips/image 中，在MT7688位置编辑输入如下的内容：

Image/Build/Profile/MT7688=$(call BuildFirmware/Default4M/$(1),$(1),mt7628,MT7628)
Image/Build/Profile/LinkIt7688=$(call BuildFirmware/Default32M/$(1),$(1),LinkIt7688,LINKIT7688)
 
Image/Build/Profile/XiaoYin0864=$(call BuildFirmware/Default8M/$(1),$(1),XiaoYin0864,XiaoYin0864)
Image/Build/Profile/XiaoYin1664=$(call BuildFirmware/Default16M/$(1),$(1),XiaoYin1664,XiaoYin1664)
Image/Build/Profile/XiaoYin32128=$(call BuildFirmware/Default32M/$(1),$(1),XiaoYin32128,XiaoYin32128)
 
ifeq ($(SUBTARGET),mt7628)
define Image/Build/Profile/Default
	$(call Image/Build/Profile/MT7688,$(1))
	$(call Image/Build/Profile/LinkIt7688,$(1))
	
	$(call Image/Build/Profile/XiaoYin0864,$(1))
	$(call Image/Build/Profile/XiaoYin1664,$(1))
	$(call Image/Build/Profile/XiaoYin32128,$(1))
endef
endif

三. 增加 02-XiaoYin32128.mk 文件

在～/openwrt/target/linux/ramips/mt7688/profiles 目录下添加 02-XiaoYin32128.mk文件，文件内容如下：

define Profile/XiaoYin32128
	NAME:=YinYun XiaoYin 32MB flash/128MB RAM
	PACKAGES:=\
	kmod-usb-core kmod-usb2 kmod-usb-ohci \
	kmod-ledtrig-netdev kmod-ledtrig-usbdev kmod-ledtrig-gpio kmod-ledtrig-heartbeat \
	mountd \
	uhttpd rpcd rpcd-mod-iwinfo \
	kmod-fs-vfat kmod-fs-exfat kmod-fs-ext4 block-mount e2fsprogs \
	kmod-nls-base kmod-nls-cp437 kmod-nls-iso8859-1 kmod-nls-utf8 kmod-usb-storage \
	mtk-wifi airkiss webui ated luci reg maccalc \
	gateway luci-i18n-base-zh-cn \
	mtk-mt76x8-linkwatch
endef
 
 
define Profile/XiaoYin32128/Config
	select LUCI_LANG_zh-cn
endef
 
 
define Profile/XiaoYin32127/Description
	YinYun 32MB flash/128MB ram base packages.
endef
 
$(eval $(call Profile,XiaoYin32128))

四.验证测试

首先删除～/openwrt/tmp/ 文件夹内的内容，输入 make menuconfig 命令在Target Profile ------> 中即可看到上面添加的选项.

转自：https://blog.csdn.net/liule5211314/article/details/85230468