Image Generator (Image Builder)

準備:

安裝 package:

apt-get install build-essential squashfs-tools

下載 Source:

mkdir /usr/src/openwrt

cd /usr/src/openwrt

[ 351.8 Mbyte ]

# V12

axel http://downloads.openwrt.org/attitude_adjustment/12.09/ar71xx/generic/Op...

Source Tree

packages:

*.ipk

target/linux/

• x86
• ar71xx

bin/ar71xx/                <-- build 好的東西在這目錄裡

md5sums
openwrt-ar71xx-generic-rootfs.tar.gz
openwrt-ar71xx-generic-root.jffs2-128k
openwrt-ar71xx-generic-root.jffs2-256k
openwrt-ar71xx-generic-root.jffs2-64k
openwrt-ar71xx-generic-root.squashfs
openwrt-ar71xx-generic-root.squashfs-64k
openwrt-ar71xx-generic-tl-wr740n-v1-jffs2-factory.bin
openwrt-ar71xx-generic-tl-wr740n-v1-jffs2-sysupgrade.bin
openwrt-ar71xx-generic-tl-wr740n-v1-squashfs-factory.bin
openwrt-ar71xx-generic-tl-wr740n-v1-squashfs-sysupgrade.bin
openwrt-ar71xx-generic-tl-wr740n-v3-jffs2-factory.bin
openwrt-ar71xx-generic-tl-wr740n-v3-jffs2-sysupgrade.bin
openwrt-ar71xx-generic-tl-wr740n-v3-squashfs-factory.bin
openwrt-ar71xx-generic-tl-wr740n-v3-squashfs-sysupgrade.bin
openwrt-ar71xx-generic-tl-wr740n-v4-jffs2-factory.bin
openwrt-ar71xx-generic-tl-wr740n-v4-jffs2-sysupgrade.bin
openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-factory.bin
openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-sysupgrade.bin
openwrt-ar71xx-generic-uImage-gzip.bin
openwrt-ar71xx-generic-uImage-lzma.bin
openwrt-ar71xx-generic-vmlinux.bin
openwrt-ar71xx-generic-vmlinux.elf
openwrt-ar71xx-generic-vmlinux.gz
openwrt-ar71xx-generic-vmlinux.lzma
openwrt-ar71xx-generic-vmlinux-lzma.elf

Usage

make image PROFILE=XXX PACKAGES="pkg1 pkg2 -pkg4" FILES=files/

make image

create a minimal image with just essential packages included

make info

list of defined profiles

Current Target: "ar71xx (Generic)"
Default Packages: base-files libc libgcc busybox dropbear mtd uci opkg hotplug2 netifd 
kmod-leds-gpio kmod-gpio-button-hotplug kmod-wdt-ath79 swconfig kmod-ledtrig-default-on 
kmod-ledtrig-timer kmod-ledtrig-netdev kmod-ath9k wpad-mini uboot-envtools dnsmasq 
iptables ppp ppp-mod-pppoe kmod-ipt-nathelper firewall

..............

TLWR740:
        TP-LINK TL-WR740N/ND
        Packages:

..............

TLWR842:
        TP-LINK TL-WR842N/ND
        Packages: kmod-usb-core kmod-usb2 kmod-ledtrig-usbdev

..............

Profiles 放在:

./target/linux/ar71xx/generic/profiles/tp-link.mk

Example:

.......................................

define Profile/TLWR740
        NAME:=TP-LINK TL-WR740N/ND
        PACKAGES:=
endef

define Profile/TLWR740/Description
        Package set optimized for the TP-LINK TL-WR740N/ND.
endef
$(eval $(call Profile,TLWR740))

.......................................

List installed Package on working router

opkg list_installed

740N - 12.09

base-files - 117-r36088
busybox - 1.19.4-6
dnsmasq - 2.62-2
dropbear - 2011.54-2
firewall - 2-55.1
hotplug2 - 1.0-beta-4
iptables - 1.4.10-4
iw - 3.6-1
jshn - 2013-01-29-0bc317aa4d9af44806c28ca286d79a8b5a92b2b8
kernel - 3.3.8-1-d6597ebf6203328d3519ea3c3371a493
kmod-ath - 3.3.8+2012-09-07-3
kmod-ath9k - 3.3.8+2012-09-07-3
kmod-ath9k-common - 3.3.8+2012-09-07-3
kmod-cfg80211 - 3.3.8+2012-09-07-3
kmod-crypto-aes - 3.3.8-1
kmod-crypto-arc4 - 3.3.8-1
kmod-crypto-core - 3.3.8-1
kmod-gpio-button-hotplug - 3.3.8-1
kmod-ipt-conntrack - 3.3.8-1
kmod-ipt-core - 3.3.8-1
kmod-ipt-nat - 3.3.8-1
kmod-ipt-nathelper - 3.3.8-1
kmod-leds-gpio - 3.3.8-1
kmod-ledtrig-default-on - 3.3.8-1
kmod-ledtrig-netdev - 3.3.8-1
kmod-ledtrig-timer - 3.3.8-1
kmod-ledtrig-usbdev - 3.3.8-1
kmod-lib-crc-ccitt - 3.3.8-1
kmod-mac80211 - 3.3.8+2012-09-07-3
kmod-nls-base - 3.3.8-1
kmod-ppp - 3.3.8-1
kmod-pppoe - 3.3.8-1
kmod-pppox - 3.3.8-1
kmod-usb-core - 3.3.8-1
kmod-usb-ohci - 3.3.8-1
kmod-usb2 - 3.3.8-1
kmod-wdt-ath79 - 3.3.8-1
libblobmsg-json - 2013-01-29-0bc317aa4d9af44806c28ca286d79a8b5a92b2b8
libc - 0.9.33.2-1
libgcc - 4.6-linaro-1
libip4tc - 1.4.10-4
libiwinfo - 36
libiwinfo-lua - 36
libjson - 0.9-2
liblua - 5.1.4-8
libnl-tiny - 0.1-3
libubox - 2013-01-29-0bc317aa4d9af44806c28ca286d79a8b5a92b2b8
libubus - 2013-01-13-bf566871bd6a633e4504c60c6fc55b2a97305a50
libubus-lua - 2013-01-13-bf566871bd6a633e4504c60c6fc55b2a97305a50
libuci - 2013-01-04.1-1
libuci-lua - 2013-01-04.1-1
libxtables - 1.4.10-4
lua - 5.1.4-8
luci - 0.11.1-1
luci-app-firewall - 0.11.1-1
luci-i18n-english - 0.11.1-1
luci-lib-core - 0.11.1-1
luci-lib-ipkg - 0.11.1-1
luci-lib-nixio - 0.11.1-1
luci-lib-sys - 0.11.1-1
luci-lib-web - 0.11.1-1
luci-mod-admin-core - 0.11.1-1
luci-mod-admin-full - 0.11.1-1
luci-proto-core - 0.11.1-1
luci-proto-ppp - 0.11.1-1
luci-sgi-cgi - 0.11.1-1
luci-theme-base - 0.11.1-1
luci-theme-openwrt - 0.11.1-1
mtd - 18.1
netifd - 2013-01-29.2-4bb99d4eb462776336928392010b372236ac3c93
opkg - 618-3
ppp - 2.4.5-8
ppp-mod-pppoe - 2.4.5-8
swconfig - 10
uboot-envtools - 2012.04.01-1
ubus - 2013-01-13-bf566871bd6a633e4504c60c6fc55b2a97305a50
ubusd - 2013-01-13-bf566871bd6a633e4504c60c6fc55b2a97305a50
uci - 2013-01-04.1-1
uhttpd - 2012-10-30-e57bf6d8bfa465a50eea2c30269acdfe751a46fd
wpad-mini - 20120910-1

File

mkdir -p files/etc/config

內有 file

network
wireless
firewall

# clean up temporary build files and generated images

make clean

Example

make image PROFILE=TLWR740 PACKAGES="luci -ppp -ppp-mod-pppoe"

拆開 bin

找出 squashfs 的開始位置:

hexdump -C openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-sysupgrade.bin | grep hsqs

000e9ce0  64 37 a0 07 00 ff ff ff  68 73 71 73 e2 03 00 00  |d7......hsqs....|

dd 出所需部份:

e9ce8 = 957672 byte

dd skip=957672  bs=1  if=openwrt-ar71xx-generic-tl-wr740n-v4-squashfs-sysupgrade.bin  of=tmp.bin

測試:

file tmp.bin

tmp.bin: Squashfs filesystem, little endian, version 4.0, 1790665 bytes, 994 inodes, blocksize: 262144 bytes, created: Fri Dec 13 16:32:37 2013