廠商 : company
Model name : rt5350f
希望功能 : wan port , wifi 則是lan
wan port ip : 192.168.100.88 (dhcp client)
wlan0 ip : 192.168.50.1 (dhcp server)
要改的檔案列表
target/linux/ramips/base-files/etc/uci-defaults/02_network
target/linux/ramips/base-files/lib/ramips.sh
target/linux/ramips/base-files/lib/upgrade/platform.sh
target/linux/ramips/dts/RT5350_EVB.dts
target/linux/ramips/image/Makefile
target/linux/ramips/rt305x/profiles/company.mk
接下來，依關係來說明
1. profiles/company.mk
新增產品和公司的資訊，最重要是 Profile/RT5350_EVB (後面的名字不可以重複)
define Profile/RT5350_EVB
NAME:=RT5350 module
PACKAGES:=kmod-usb-core kmod-usb-ohci kmod-usb2 kmod-ledtrig-usbdev \
kmod-i2c-core kmod-i2c-gpio
endef
define Profile/RT5350_EVB/Description
Package set for RT5350 Wifi Evaluation Board
endef
$(eval $(call Profile,RT5350_EVB))
最後 這一行如果沒有加入，OpenWrt會無法編譯，加入之後就可以在make menuconfig看到我們新增進去的產品
接下來對source code加入檔案
2. target/linux/ramips/dts/RT5350_EVB.dts
在編譯過程中，會到 target/linux/ramips/dts/ 中， 找要編譯的target對應的dts檔案，
裡面有定義 model ，這個定義會在init過程中被使用到
在這個例子中， 就是會去找 RT5350_EVB.dts , model 定義成 RT5350F
(待釐清 : 這邊可以定義GPIO)
/dts-v1/;
/include/ "rt5350.dtsi"
/ {
compatible = "RT5350_EVB", "ralink,rt5350-soc";
model = "RT5350F";
palmbus@10000000 {
spi@b00 {
status = "okay";
m25p80@0 {
#address-cells = <1>;
#size-cells = <1>;
reg = <0 0>;
spi-max-frequency = <10000000>;
compatible = "mx25l6405d";
linux,modalias = "m25p80", "mx25l6405d";
partition@0 {
label = "u-boot";
reg = <0x0 0x30000>;
read-only;
};
partition@30000 {
label = "u-boot-env";
reg = <0x30000 0x10000>;
read-only;
};
factory: partition@40000 {
label = "factory";
reg = <0x40000 0x10000>;
read-only;
};
partition@50000 {
label = "firmware";
reg = <0x50000 0x1fb0000>;
};
};
};
};
ethernet@10100000 {
mtd-mac-address = <&factory 0x28>;
};
wmac@10180000 {
ralink,mtd-eeprom = <&factory 0>;
};
};
3.target/linux/ramips/base-files/lib/ramips.sh
(待釐清 : 誰CALL的)
ramips_board_detect ()中，會依照/proc/cpuinfo的machine 來做判斷
* 將 dts定義的model 轉換成 board_name , 並且利用兩個變數將資料儲存起來
* 在/tmp/sysinfo/ 建立兩個檔案
"$RAMIPS_BOARD_NAME" > /tmp/sysinfo/board_name ，這是小寫
"$RAMIPS_MODEL" > /tmp/sysinfo/model ，這是大寫，從/proc/cpuinfo取得， 字串則是在dts中定義的model
machine=$(awk 'BEGIN{FS="[ \t]+:[ \t]"} /machine/ {print $2}' /proc/cpuinfo)
case "$machine" in
*"RT5350F")
name="rt5350f"
;;
esac
[ -z "$RAMIPS_BOARD_NAME" ] && RAMIPS_BOARD_NAME="$name"
[ -z "$RAMIPS_MODEL" ] && RAMIPS_MODEL="$machine"
[ -e "/tmp/sysinfo/" ] || mkdir -p "/tmp/sysinfo/"
echo "$RAMIPS_BOARD_NAME" > /tmp/sysinfo/board_name
echo "$RAMIPS_MODEL" > /tmp/sysinfo/model
4. target/linux/ramips/base-files/etc/uci-defaults/02_network
這裡是將定義產品的網路介面，在ramips_setup_interfaces() 中 ,需要加入model的判斷和介面卡設定
用來判斷 board 則是ramips.sh中 被轉換的字串 "$RAMIPS_BOARD_NAME" (rt5350f)
ramips_setup_interfaces()
{
local board="$1"
ucidef_set_interface_loopback
case $board in
rt5350f)
ucidef_set_interface_lan "eth0.2"
ucidef_set_interface_wan "eth0.1"
ucidef_add_switch "switch0" "1" "1"
ucidef_add_switch_vlan "switch0" "1" "1 2 3 4 6t"
ucidef_add_switch_vlan "switch0" "2" "0 6t"
;;
;;
esac
}
5. target/linux/ramips/image/Makefile
加入image的規則，這樣OpenWrt才知道要怎麼打包 , 打包規則以及 加入Default
Image/Build/Profile/RT5350_EVB 要跟前面相同
(待釐清 : 後面兩個規則)
Image/Build/Profile/RT5350_EVB=$(call BuildFirmware/Default8M/$(1),$(1),rt5350f,RT5350_EVB)
ifeq ($(SUBTARGET),rt305x)
define Image/Build/Profile/Default
$(call Image/Build/Profile/RT5350_EVB,$(1))
endef
endif
target/linux/ramips/base-files/lib/upgrade/platform.sh
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