misc notes

OpenWrt for Arduino Yun cheat sheet

OpenWrt which runs on the Atheros AR 9331 of Arduino Yun, LLC edition OpenWrt-Yun also Linino is obsolete in the kernel and various packages (and there are security problems). I will drill down on how to upgrade to the latest version of OpenWrt. (With Absolutely NO Warranty)


Prepare for the Security update of OpenWrt-Yun, Arduino Yun Operating System. In the IoT ERA, I think it is a very important thing. 

BusyBox v1.25.1 () built-in shell (ash)

     _________
    /        /\      _    ___ ___  ___
   /  LE    /  \    | |  | __|   \| __|
  /    DE  /    \   | |__| _|| |) | _|
 /________/  LE  \  |____|___|___/|___|                      lede-project.org
 \        \   DE /
  \    LE  \    /  -----------------------------------------------------------
   \  DE    \  /    Reboot (17.01-SNAPSHOT, r3796-473e994)
    \________\/    -----------------------------------------------------------

root@Arduino:~# cat /proc/cpuinfo 
system type             : Atheros AR9330 rev 1
machine                 : Arduino Yun
processor               : 0
cpu model               : MIPS 24Kc V7.4
BogoMIPS                : 265.42
wait instruction        : yes
microsecond timers      : yes
tlb_entries             : 16
extra interrupt vector  : yes
hardware watchpoint     : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
isa                     : mips1 mips2 mips32r1 mips32r2
ASEs implemented        : mips16
shadow register sets    : 1
kscratch registers      : 0
package                 : 0
core                    : 0
VCED exceptions         : not available
VCEI exceptions         : not available

root@Arduino:~# uname -a
Linux Arduino 4.4.108 #0 Fri Dec 29 23:36:25 2017 mips GNU/Linux

NOTE: Arduino.cc (LLC) goes to LininoOS!!!

Arduino Yún LininoOS (since 2-Nov-2016)


OpenWrt-Yun Chaos Calmer 15.05

RedSnake64's implementation can be found at Arduino Yun forum.

RedSnake64 edition OpenWrt-Yun: 

https://github.com/RedSnake64/openwrt-yun/tree/15.05
ChaosCalmer_v1.4
I tried it. 'mDNS' is not active, so I could not be accessed in '.local'.
Grasp that implementation. I decided to make Arduino Yun package that can be used in OpenWrt trunk Bleeding Edge.

RedSnake64 edition become Arduino LLC Official edition: 

https://github.com/arduino/openwrt-yun-1505

Explore the Yun Profile of the OpenWrt / LEDE Project

The OpenWrt / LEDE Project, already exist a Arduino Yun Profile. 

target/linux/ar71xx/generic/profiles/arduino.mk
ar71xx: add Arduino Yun

https://github.com/openwrt/packages/tree/master/utils/yunbridge
yunbridge
Arduino Yun bridge library has been implemented.

OpenWrt snapshot images: 

https://downloads.openwrt.org/snapshots/trunk/ar71xx/generic/
https://downloads.openwrt.org/snapshots/trunk/ar71xx/generic/packages/
Mirror site: http://ftp.stw-bonn.de/pub/openwrt/snapshots/trunk/ar71xx/generic/

OpenWrt / LEDE snapshot images: 

http://downloads.lede-project.org/snapshots/targets/ar71xx/generic/
http://downloads.lede-project.org/snapshots/targets/ar71xx/generic/packages/
http://downloads.lede-project.org/snapshots/packages/mips_24kc/
This System Image is corresponding Arduino Yun Hardware. but, of course Arduino Yun own software is not implemented.

OpenWrt Core: 

git.openwrt.org Git - openwrt trunk tree
shortlog

OpenWrt / LEDE Core: 

git.lede-project.org Git - source.git/tree
shortlog

OpenWrt Packages: 

https://github.com/openwrt/packages
https://github.com/openwrt/luci
https://github.com/openwrt-routing/packages
https://github.com/openwrt/telephony
https://github.com/openwrt/targets
https://github.com/openwrt-management/packages
Optional package of OpenWrt Project is managed on github.

Explore the OpenWrt-Yun

OpenWrt-Yun arduino packages

LLC edition arduino package: 

https://github.com/arduino/openwrt-packages-yun/tree/master/arduino

RedSnake64 edition arduino package: 

https://github.com/RedSnake64/openwrt-arduino-packages/tree/for-15.05

LLC edition OpenWrt CC version arduino package: 

https://github.com/arduino/openwrt-arduino-packages/tree/for-15.05
Hmmmm.... CONFIG_USE_UCLIBC=y
(I go USE_MUSL ;)

Arduino OpenWrt Yún packages: 

(y) avrdude *
(y) cpu-mcu-bridge *
(m) cwiid *
(y) luci-app-arduino-webpanel
(m) node *
(m) node-bleno
(m) node-noble
(m) node-serialport *
(m) node-socket.io
(m) node-socket.io-legacy *
(m) node-socket.io-client
(m) node-socket.io-client-legacy *
(m) node-sqlite3
(m) node-ws
(y) rng-tools *
(y) spacebrew
(y) temboo
(y) uSDaemon
(m) v8m-rb *
(y) yun-conf
(y) yun-scripts
  1. avrdude: use a OpenWrt package. Configuration for the Arduino Yun should be placed in /etc/avrdude.conf.
  2. cpu-mcu-bridge: overlaps with OpenWrt yunbridge package. For compatibility use a Arduino package.
  3. cwiid: only RedSnake64 edition. cwiid is Nintendo Wii remote interface package, so should delete.
  4. node: If you want to run node.js, Should turn on MIPS FPU EMULATOR kernel config.
  5. node, node-serialport: use a OpenWrt package. so should delete.
  6. "-legacy" mean that the 0.9.x version.
  7. rng-tools: use a OpenWrt package. so should delete.
  8. v8m-rb: Not required, so should delete.

My new arduino packages here: 

https://github.com/nxhack/openwrt-arduino-packages

Arturo Rinaldi edition linino packages: 

https://github.com/artynet/LEDE/tree/linino-20/package/linino

Important concept of OpenWrt

The Minimized (smaller footprint) is Highest Priority. This is the large difference in policy between PC GNU/Linux and OpenWrt.

Trunk Bleeding Edge / Reboot version of OpenWrt-Yun package and build environment

https://github.com/openwrt/openwrt.git
https://github.com/nxhack/openwrt-yun-build-extra
https://github.com/nxhack/openwrt-arduino-packages

Setup repos: 

mkdir Build_Path_Some_Where
cd Build_Path_Some_Where
git clone https://github.com/openwrt/openwrt.git
git clone --depth=1 --branch master --single-branch https://github.com/nxhack/openwrt-yun-build-extra.git
cd openwrt
ln -s ../openwrt-yun-build-extra/* .

Or lede-17.01 

mkdir Build_Path_Some_Where
cd Build_Path_Some_Where
git clone --branch lede-17.01 https://github.com/openwrt/openwrt.git
git clone --depth=1 --branch lede-17.01 --single-branch https://github.com/nxhack/openwrt-yun-build-extra.git
cd openwrt
ln -s ../openwrt-yun-build-extra/* .


Please modify ./files/etc/opkg/distfeeds.conf

First Time, Setup cross compile build environment (ubuntu 14.04): 

./FIRST_SETUP_ubuntu_Trusty_Tahr.sh
Also run fine on 'Bash on Ubuntu on Widnows' ;)

Build: 

./build.sh

When build succeed, You find lede-ar71xx-generic-yun-16M-squashfs-sysupgrade.bin in ./bin/targets/ar71xx/generic directory.

(Apply Yun-Shield patch, then SELECT Yun Shield: lede-ar71xx-generic-yun-shield-squashfs-sysupgrade.bin)

In order to using the packages, You must placed kernel packages and arduino packages to server (or SD card).

LEDE Trunk Breaking changes

ar71xx: move Arduino Yun to generic building code

To use the new partitioning, you need to update your U-Boot env in advance: 

setenv mtdparts "spi0.0:256k(u-boot)ro,64k(u-boot-env),15936k(firmware),64k(nvram),64k(art)ro"
setenv bootcmd "run addboard; run addtty; run addparts; run addrootfs; bootm 0x9f050000 || bootm 0x9fde0000"
saveenv

memo memo... be careful 

setenv board Yun
setenv mtdparts "spi0.0:256k(u-boot)ro,64k(u-boot-env),15936k(firmware),64k(nvram),64k(art)ro"
setenv rootfstype "squashfs,jffs2"
setenv bootargs "console=ttyATH0,250000 board=Yun mem=64M"
setenv noinitrd


memo...

setenv serverip ‹tftp-server-ip›; setenv ipaddr ‹yun-board-ip›;
setenv serverip 192.168.1.10;
setenv ipaddr 192.168.1.1;
ping 192.168.1.10;

LininoIO OS upgrade from U-boot
Reflashing the OpenWrt-Yun image on the Yún
Restore the 1.5.3 image after you did sysupgrade to 1.6.2 on old Yún

Restore old image: 

setenv bootargs board=YUN console=ttyATH0,250000 mtdparts=spi0.0:256k(u-boot)ro,64k(u-boot env)ro,14656k(rootfs),1280k(kernel),64k(nvram),64k(art),15936k@0x50000(firmware) rootfstype=squashfs,jffs2 noinitrd
saveenv

Essential items in the kernel configuration

diffconfig 

CONFIG_TARGET_ar71xx=y
CONFIG_TARGET_ar71xx_generic=y
CONFIG_TARGET_ar71xx_generic_DEVICE_arduino-yun=y
CONFIG_ALL_KMODS=y
CONFIG_ALL_NONSHARED=y
CONFIG_DEVEL=y
CONFIG_BUILD_PATENTED=y
CONFIG_CCACHE=y
CONFIG_IB=y
CONFIG_IB_STANDALONE=y
CONFIG_IMAGEOPT=y
CONFIG_KERNEL_MIPS_FPU_EMULATOR=y
CONFIG_LIBCURL_COOKIES=y
CONFIG_LIBCURL_FILE=y
CONFIG_LIBCURL_FTP=y
CONFIG_LIBCURL_HTTP=y
CONFIG_LIBCURL_NO_SMB="!"
CONFIG_LIBCURL_OPENSSL=y
CONFIG_LIBCURL_PROXY=y
CONFIG_LUCI_LANG_en=y
CONFIG_MAKE_TOOLCHAIN=y
CONFIG_NODEJS_8=y
CONFIG_NODEJS_ICU_NONE=y
CONFIG_OPENSSL_WITH_COMPRESSION=y
CONFIG_OPENSSL_WITH_DEPRECATED=y
CONFIG_OPENSSL_WITH_EC=y
CONFIG_OPENSSL_WITH_NPN=y
CONFIG_OPENSSL_WITH_PSK=y
CONFIG_OPENSSL_WITH_SRP=y
CONFIG_PACKAGE_ajtcl=m
CONFIG_PACKAGE_ajtcl-alljoynjs=m
CONFIG_PACKAGE_ajtcl-alljoynjs-samples=m
CONFIG_PACKAGE_ajtcl-samples=m
CONFIG_PACKAGE_ajtcl-services=m
CONFIG_PACKAGE_alljoyn=m
CONFIG_PACKAGE_alljoyn-about=m
CONFIG_PACKAGE_alljoyn-c=m
CONFIG_PACKAGE_alljoyn-config=m
CONFIG_PACKAGE_alljoyn-config-samples=m
CONFIG_PACKAGE_alljoyn-controlpanel=m
CONFIG_PACKAGE_alljoyn-controlpanel-samples=m
CONFIG_PACKAGE_alljoyn-non-gw-config=m
CONFIG_PACKAGE_alljoyn-notification=m
CONFIG_PACKAGE_alljoyn-notification-samples=m
CONFIG_PACKAGE_alljoyn-sample_apps=m
CONFIG_PACKAGE_alljoyn-samples=m
CONFIG_PACKAGE_alljoyn-services_common=m
CONFIG_PACKAGE_arduinoos=m
CONFIG_PACKAGE_argp-standalone=y
CONFIG_PACKAGE_avahi-daemon-service-ssh=y
CONFIG_PACKAGE_avahi-dbus-daemon=y
CONFIG_PACKAGE_avahi-dnsconfd=y
CONFIG_PACKAGE_avahi-utils=y
CONFIG_PACKAGE_avrdude=y
CONFIG_PACKAGE_badblocks=y
CONFIG_PACKAGE_blkid=y
CONFIG_PACKAGE_block-mount=y
CONFIG_PACKAGE_bluez-libs=m
CONFIG_PACKAGE_bossa=y
CONFIG_PACKAGE_ca-bundle=y
CONFIG_PACKAGE_ca-certificates=y
CONFIG_PACKAGE_ciao=y
CONFIG_PACKAGE_ciao-connector-phant=m
CONFIG_PACKAGE_ciao-connector-smtp=m
CONFIG_PACKAGE_ciao-connector-xmpp=m
CONFIG_PACKAGE_cpu-mcu-bridge=y
CONFIG_PACKAGE_curl=y
CONFIG_PACKAGE_dbus=y
CONFIG_PACKAGE_dbus-utils=y
CONFIG_PACKAGE_dosfstools=y
CONFIG_PACKAGE_duktape=m
CONFIG_PACKAGE_e2fsprogs=y
CONFIG_PACKAGE_fdisk=y
CONFIG_PACKAGE_gnupg=y
CONFIG_PACKAGE_hidapi=m
CONFIG_PACKAGE_kmod-fs-exfat=m
CONFIG_PACKAGE_kmod-fs-msdos=y
CONFIG_PACKAGE_kmod-fs-vfat=y
CONFIG_PACKAGE_kmod-loop=y
CONFIG_PACKAGE_kmod-nls-cp437=y
CONFIG_PACKAGE_kmod-nls-iso8859-1=y
CONFIG_PACKAGE_kmod-nls-utf8=y
CONFIG_PACKAGE_kmod-scsi-core=y
CONFIG_PACKAGE_kmod-scsi-generic=y
CONFIG_PACKAGE_kmod-spi-bitbang=y
CONFIG_PACKAGE_kmod-spi-dev=y
CONFIG_PACKAGE_kmod-spi-gpio=y
CONFIG_PACKAGE_kmod-spi-gpio-custom=y
CONFIG_PACKAGE_kmod-usb-storage=y
CONFIG_PACKAGE_libavahi-client=y
CONFIG_PACKAGE_libavahi-compat-libdnssd=y
CONFIG_PACKAGE_libavahi-dbus-support=y
CONFIG_PACKAGE_libblkid=y
CONFIG_PACKAGE_libbz2=y
CONFIG_PACKAGE_libcap=m
CONFIG_PACKAGE_libcomerr=y
CONFIG_PACKAGE_libcurl=y
CONFIG_PACKAGE_libdaemon=y
CONFIG_PACKAGE_libdbus=y
CONFIG_PACKAGE_libelf1=y
CONFIG_PACKAGE_libevdev=m
CONFIG_PACKAGE_libexpat=y
CONFIG_PACKAGE_libext2fs=y
CONFIG_PACKAGE_libfdisk=y
CONFIG_PACKAGE_libffi=y
CONFIG_PACKAGE_libftdi1=y
CONFIG_PACKAGE_libfuse=m
CONFIG_PACKAGE_libgdbm=y
CONFIG_PACKAGE_libiwinfo-lua=y
CONFIG_PACKAGE_liblua=y
CONFIG_PACKAGE_liblucihttp=y
CONFIG_PACKAGE_liblucihttp-lua=y
CONFIG_PACKAGE_liblzma=m
CONFIG_PACKAGE_libncurses=y
CONFIG_PACKAGE_libopenssl=y
CONFIG_PACKAGE_libpam=m
CONFIG_PACKAGE_libpcre=y
CONFIG_PACKAGE_libpopt=m
CONFIG_PACKAGE_libreadline=y
CONFIG_PACKAGE_librt=y
CONFIG_PACKAGE_libsmartcols=y
CONFIG_PACKAGE_libss=y
CONFIG_PACKAGE_libstdcpp=y
CONFIG_PACKAGE_libubus-lua=y
CONFIG_PACKAGE_libudev-fbsd=m
CONFIG_PACKAGE_libusb-1.0=y
CONFIG_PACKAGE_libusb-compat=y
CONFIG_PACKAGE_libustream-openssl=y
CONFIG_PACKAGE_libuuid=y
CONFIG_PACKAGE_logrotate=m
CONFIG_PACKAGE_lua=y
CONFIG_PACKAGE_lua-base64=m
CONFIG_PACKAGE_lua-coxpcall=m
CONFIG_PACKAGE_lua-wsapi-base=m
CONFIG_PACKAGE_lua-wsapi-xavante=m
CONFIG_PACKAGE_lua-xavante=m
CONFIG_PACKAGE_luafilesystem=m
CONFIG_PACKAGE_luci=y
CONFIG_PACKAGE_luci-app-arduino-webpanel=y
CONFIG_PACKAGE_luci-app-firewall=y
CONFIG_PACKAGE_luci-base=y
CONFIG_PACKAGE_luci-i18n-base-en=y
CONFIG_PACKAGE_luci-i18n-firewall-en=y
CONFIG_PACKAGE_luci-lib-ip=y
CONFIG_PACKAGE_luci-lib-json=y
CONFIG_PACKAGE_luci-lib-jsonc=y
CONFIG_PACKAGE_luci-lib-nixio=y
CONFIG_PACKAGE_luci-mod-admin-full=y
CONFIG_PACKAGE_luci-proto-ipv6=y
CONFIG_PACKAGE_luci-proto-ppp=y
CONFIG_PACKAGE_luci-theme-bootstrap=y
CONFIG_PACKAGE_luci-theme-openwrt=y
CONFIG_PACKAGE_mg=y
CONFIG_PACKAGE_nano=y
CONFIG_PACKAGE_node=m
CONFIG_PACKAGE_node-actions-on-google=m
CONFIG_PACKAGE_node-alexa-app=m
CONFIG_PACKAGE_node-alexa-sdk=m
CONFIG_PACKAGE_node-arduino-firmata=m
CONFIG_PACKAGE_node-authenticate-pam=m
CONFIG_PACKAGE_node-autobahn=m
CONFIG_PACKAGE_node-aws-iot-device-sdk=m
CONFIG_PACKAGE_node-aws-sdk=m
CONFIG_PACKAGE_node-azure-event-hubs=m
CONFIG_PACKAGE_node-azure-iot-device-amqp=m
CONFIG_PACKAGE_node-azure-iot-device-http=m
CONFIG_PACKAGE_node-azure-iot-device-mqtt=m
CONFIG_PACKAGE_node-azure-iothub=m
CONFIG_PACKAGE_node-bignum=m
CONFIG_PACKAGE_node-binaryjs=m
CONFIG_PACKAGE_node-bleacon=m
CONFIG_PACKAGE_node-bleno=m
CONFIG_PACKAGE_node-bluetooth-hci-socket=m
CONFIG_PACKAGE_node-browserify=m
CONFIG_PACKAGE_node-bufferutil=m
CONFIG_PACKAGE_node-coap=m
CONFIG_PACKAGE_node-cpx=m
CONFIG_PACKAGE_node-cylon=m
CONFIG_PACKAGE_node-cylon-firmata=m
CONFIG_PACKAGE_node-cylon-gpio=m
CONFIG_PACKAGE_node-cylon-i2c=m
CONFIG_PACKAGE_node-eddystone-beacon=m
CONFIG_PACKAGE_node-ejdb=m
CONFIG_PACKAGE_node-epoll=m
CONFIG_PACKAGE_node-exorcist=m
CONFIG_PACKAGE_node-express=m
CONFIG_PACKAGE_node-ffi=m
CONFIG_PACKAGE_node-firmata=m
CONFIG_PACKAGE_node-forever=m
CONFIG_PACKAGE_node-fuse-bindings=m
CONFIG_PACKAGE_node-hap-nodejs=m
CONFIG_PACKAGE_node-hashmap=m
CONFIG_PACKAGE_node-hashtable=m
CONFIG_PACKAGE_node-homebridge=m
CONFIG_PACKAGE_node-i2c-bus=m
CONFIG_PACKAGE_node-ibmiotf=m
CONFIG_PACKAGE_node-ideino-linino-lib=m
CONFIG_PACKAGE_node-iothub-explorer=m
CONFIG_PACKAGE_node-johnny-five=m
CONFIG_PACKAGE_node-jsonfile=m
CONFIG_PACKAGE_node-level=m
CONFIG_PACKAGE_node-leveldown=m
CONFIG_PACKAGE_node-levelup=m
CONFIG_PACKAGE_node-logfmt=m
CONFIG_PACKAGE_node-lwm2m-node-lib=m
CONFIG_PACKAGE_node-mdns=m
CONFIG_PACKAGE_node-mknod=m
CONFIG_PACKAGE_node-mocha=m
CONFIG_PACKAGE_node-modbus=m
CONFIG_PACKAGE_node-mqtt=m
CONFIG_PACKAGE_node-muzzley-client=m
CONFIG_PACKAGE_node-nconf=m
CONFIG_PACKAGE_node-net-ping=m
CONFIG_PACKAGE_node-nino-io=m
CONFIG_PACKAGE_node-nitrogen=m
CONFIG_PACKAGE_node-nitrogen-cli=m
CONFIG_PACKAGE_node-nitrogen-leveldb-store=m
CONFIG_PACKAGE_node-noble=m
CONFIG_PACKAGE_node-node-expat=m
CONFIG_PACKAGE_node-node-hid=m
CONFIG_PACKAGE_node-node-inspect=m
CONFIG_PACKAGE_node-node-lambda=m
CONFIG_PACKAGE_node-node-red=m
CONFIG_PACKAGE_node-node-red-contrib-gpio=m
CONFIG_PACKAGE_node-node-red-contrib-homekit=m
CONFIG_PACKAGE_node-node-red-node-arduino=m
CONFIG_PACKAGE_node-node-static=m
CONFIG_PACKAGE_node-npm=m
CONFIG_PACKAGE_node-npm-check-updates=m
CONFIG_PACKAGE_node-onoff=m
CONFIG_PACKAGE_node-pm2=m
CONFIG_PACKAGE_node-reverse-wstunnel=m
CONFIG_PACKAGE_node-rimraf=m
CONFIG_PACKAGE_node-rpio=m
CONFIG_PACKAGE_node-serialport=m
CONFIG_PACKAGE_node-simple-xmpp=m
CONFIG_PACKAGE_node-sleep=m
CONFIG_PACKAGE_node-socket.io=m
CONFIG_PACKAGE_node-socket.io-client=m
CONFIG_PACKAGE_node-socket.io-client-legacy=m
CONFIG_PACKAGE_node-socket.io-legacy=m
CONFIG_PACKAGE_node-soracom=m
CONFIG_PACKAGE_node-sqlite3=m
CONFIG_PACKAGE_node-statvfs=m
CONFIG_PACKAGE_node-twilio=m
CONFIG_PACKAGE_node-typescript=m
CONFIG_PACKAGE_node-uglify-js=m
CONFIG_PACKAGE_node-usb=m
CONFIG_PACKAGE_node-utf-8-validate=m
CONFIG_PACKAGE_node-ws=m
CONFIG_PACKAGE_node-xmpp=m
CONFIG_PACKAGE_node-xmpp-client=m
CONFIG_PACKAGE_node-xmpp-component=m
CONFIG_PACKAGE_node-xmpp-server=m
CONFIG_PACKAGE_node-yarn=m
CONFIG_PACKAGE_openssl-util=y
CONFIG_PACKAGE_python-base=y
CONFIG_PACKAGE_python-email=m
CONFIG_PACKAGE_python-light=y
CONFIG_PACKAGE_python-logging=y
CONFIG_PACKAGE_python-netifaces=m
CONFIG_PACKAGE_python-openssl=y
CONFIG_PACKAGE_python-paho-mqtt=y
CONFIG_PACKAGE_python-pyserial=y
CONFIG_PACKAGE_python-xml=y
CONFIG_PACKAGE_querierd=m
CONFIG_PACKAGE_reset-serial=y
CONFIG_PACKAGE_rng-tools=y
CONFIG_PACKAGE_rpcd=y
CONFIG_PACKAGE_rpcd-mod-rrdns=y
CONFIG_PACKAGE_shellinabox=m
CONFIG_PACKAGE_spacebrew=y
CONFIG_PACKAGE_strace=y
CONFIG_PACKAGE_swap-utils=y
CONFIG_PACKAGE_temboo=y
CONFIG_PACKAGE_terminfo=y
CONFIG_PACKAGE_tune2fs=y
CONFIG_PACKAGE_uSDaemon=m
CONFIG_PACKAGE_uboot-ar71xx-linino-yun=y
CONFIG_PACKAGE_uhttpd=y
CONFIG_PACKAGE_uhttpd-mod-lua=y
CONFIG_PACKAGE_uhttpd-mod-ubus=y
CONFIG_PACKAGE_usbutils=y
CONFIG_PACKAGE_wget=y
CONFIG_PACKAGE_wireless-tools=y
CONFIG_PACKAGE_yun-conf=y
CONFIG_PACKAGE_yun-scripts=y
CONFIG_PACKAGE_zlib=y
CONFIG_SDK=y
CONFIG_VERSIONOPT=y
CONFIG_VERSION_BUG_URL=""
CONFIG_VERSION_CODE=""
CONFIG_VERSION_DIST="OpenWrt"
CONFIG_VERSION_HOME_URL=""
CONFIG_VERSION_HWREV="1.0"
CONFIG_VERSION_MANUFACTURER="Arduino"
CONFIG_VERSION_MANUFACTURER_URL=""
CONFIG_VERSION_NUMBER=""
CONFIG_VERSION_PRODUCT="Arduino Yun"
CONFIG_VERSION_REPO="https://downloads.openwrt.org/snapshots"
CONFIG_VERSION_SUPPORT_URL=""
CONFIG_uhttpd_lua=y
# CONFIG_VERSION_CODE_FILENAMES is not set
# CONFIG_VERSION_FILENAMES is not set

openwrt-yun-lininoos.config

Difference between the LLC edition

IPv6 stack is enabled.

Device name of the leds has been changed.
ds:green:wlan -> arduino:blue:wlan
ds:green:usb -> arduino:white:usb
target/linux/ar71xx/base-files/etc/uci-defaults/01_leds
https://github.com/nxhack/openwrt-arduino-packages/commit/eb7130ac331ce491765f27372d987d9d7415f6c0

Should be started before the Yun original startup script "S49generate_new_gpg_key".
To enable rngd, add rngd section to /etc/config/system

config rngd
        option enabled '1'
        option device '/dev/urandom'
        option fill_watermark '4000'

BUSYBOX ASH BANNER The date disappear.
https://git.openwrt.org/?p=openwrt.git;a=commit;h=39fabb5068e95ab9c0901dd4f37129111d88ae00

+# don't create a version string containing the actual timestamp
+export KCONFIG_NOTIMESTAMP=1
+

BUSYBOX ASH HELP Banner disappear.
CONFIG_ASH_HELP The default has been changed to 'n'.
https://github.com/openwrt/openwrt/blob/master/package/utils/busybox/Config-defaults.in#L2617

Add a configuration of the AR9331 as AVR writer to the original package.
/etc/avrdude.conf

/etc/avrdude.conf: 

programmer
  id    = "linuxgpio";
  desc  = "Use the Linux sysfs interface to bitbang GPIO lines";
  type  = "linuxgpio";
  reset = ~18;
  sck   = 11;
  mosi  = 27;
  miso  = 8;
;

BUSYBOX: telnet is disabled.
nc localhost 6571

PATH has changed.
CONFIG_TARGET_INIT_PATH="/bin:/sbin:/usr/bin:/usr/sbin" to CONFIG_TARGET_INIT_PATH="/usr/sbin:/usr/bin:/sbin:/bin"

uhttpd: SSL is forced.
option redirect_https '1'
/etc/config/uhttpd
enable openssl-util libustream-openssl
CONFIG_OPENSSL_WITH_COMPRESSION=y

uhttpd: Use URL alias handle. Do not apply alias patch.
/etc/config/uhttpd
Add to /etc/config/uhttpd
	list alias '/arduino=/cgi-bin/luci'
	list alias '/data=/cgi-bin/luci'
	list alias '/mailbox=/cgi-bin/luci'

Procd button mechanism exists. triggerhappy is not required.
(triggerhappy use HID button mechanism, It depends on kmod-input-*)
(kmod-gpio-button-hotplug + procd buttons, Of course, smaller footprint)
I sent PR, adding ath79_register_gpio_keys_polled.
https://git.openwrt.org/?p=openwrt.git;a=commit;h=10ae130265302c717b1580514ada28d9a48a2484
/etc/hotplug.d/button/00-button
/etc/config/system
Add button section to /etc/config/system.
config button
        option button  'wps'
        option action  'pressed'
        option handler '/usr/bin/wifi-reset-button-pressed'

config button
        option button  'wps'
        option action  'released'
        option handler '/usr/bin/wifi-reset-button-released'
OR add button section to /etc/config/system.
config button
        option button  'wps'
        option action  'pressed'
        option handler '/usr/bin/blink-start 100'

config button
        option button  'wps'
        option action  'released'
        option handler '/usr/bin/blink-stop'

config button
        option button  'wps'
        option action  'released'
        option min     '5'
        option max     '30'
        option handler '/usr/bin/wifi-reset-and-reboot'

config button
        option button  'wps'
        option action  'released'
        option min     '30'
        option max     '999'
        option handler '/usr/bin/reset-to-factory-anyway'

Definitely enable MIPS_FPU_EMULATOR. (disabled by default config)
For reduce kernel size, change the kernel config.
 1. Limit the target architecture to MIPS 24Kc. AR933X, AR724X
 2. Limit the target board.
 3. Enable PCI. need for making various packages.
openwrt-yun-lininoos.config
check fpu emu debugfs
ls -l /sys/kernel/debug/mips/fpuemustats

memo

Arduino IDE Bridge Library

Must apply this patch. 

--- a/Bridge/src/Bridge.cpp
+++ b/Bridge/src/Bridge.cpp
@@ -52,7 +52,7 @@
     // Wait for OpenWRT message
     // "Press enter to activate console"
     stream.print(F("run-bridge\n"));
-    delay(500);
+    delay(5000);
     dropAll();

     // Reset the brigde to check if it is running

refresh fstab : uci

uci delete fstab.@mount[0]
uci delete fstab.@mount[0]
uci commit

uci set fstab.automount=global
uci set fstab.automount.from_fstab='1'
uci set fstab.automount.anon_mount='1'
uci commit

extroot

opkg update
opkg install e2fsprogs dosfstools fdisk rsync badblocks tune2fs
# opkg install kmod-fs-f2fs mkf2fs f2fsck
cd /usr/sbin
ln -s fsck.fat dosfsck
cd /
umount /dev/sda1
### Destroy partition information.
dd if=/dev/zero of=/dev/sda bs=4096 count=1000
### FAT32 = 14G, ext4 = 14G, else swap
(echo o; echo n; echo p; echo 1; echo; echo +14G; echo n; echo p; echo 2; echo; echo +14G; echo n; echo p; echo 3; echo; echo; echo t; echo 1; echo c; echo t; echo 3; echo 82; echo w) | fdisk /dev/sda
mkfs.fat /dev/sda1
mkfs.ext4 /dev/sda2
mkswap /dev/sda3
mkdir -p /mnt/sda2
mount /dev/sda2 /mnt/sda2
cd /
tar -C /overlay -cvf - . | tar -C /mnt/sda2 -xf -
# rsync -a --exclude=/mnt/ /overlay/ /mnt/sda2/
umount /dev/sda2
rm -rf /mnt/sda2

# check /etc/config/fstab
# remove unused fstab entry at booting time.

uci add fstab mount
uci set fstab.@mount[0].target=/overlay
uci set fstab.@mount[0].device=/dev/sda2
uci set fstab.@mount[0].fstype=ext4
uci set fstab.@mount[0].enabled=1
uci set fstab.@mount[0].check_fs=1
uci set fstab.@mount[0].options=rw,sync,noatime,nodiratime
uci commit
reboot

cd /mnt/sda2
rm -rf *
rm -rf .??*
cd /
tar -C /overlay -cvf - . | tar -C /mnt/sda2 -xf -

uci add fstab mount
uci set fstab.@mount[0].target=/overlay
uci set fstab.@mount[0].device=/dev/sda2
uci set fstab.@mount[0].fstype=ext4
uci set fstab.@mount[0].enabled=1
uci set fstab.@mount[0].check_fs=1
uci set fstab.@mount[0].options=rw,sync,noatime,nodiratime
uci commit
reboot

block detect > /etc/config/fstab ; vi /etc/config/fstab
# edit /etc/config/fstab : Set all enabled '0' -> enabled '1' exclude extroot device

After firmware upgrade with luci.(backup, sysupgrade, restore) 

# edit /etc/opkg.conf
# remove extroot settings
opkg update
opkg install e2fsprogs dosfstools fdisk rsync badblocks tune2fs
mkdir -p /mnt/sda2
mount /dev/sda2 /mnt/sda2
rm /mnt/sda2/etc/.extroot-uuid
umount /mnt/sda2

# check /etc/config/fstab
# remove unused fstab entry at booting time.

uci add fstab mount
uci set fstab.@mount[0].target=/overlay
uci set fstab.@mount[0].device=/dev/sda2
uci set fstab.@mount[0].fstype=ext4
uci set fstab.@mount[0].enabled=1
uci set fstab.@mount[0].check_fs=1
uci set fstab.@mount[0].options=rw,sync,noatime,nodiratime
uci commit
reboot

Accessing original root 

https://lede-project.org/docs/user-guide/extroot_configuration#accessing_original_root

config mount
	option target	/overlay-boot
	option device	/dev/mtdblock3
	option fstype	jffs2
	option options	rw,sync
	option enabled	1
	option check_fs 0

basic tools setup : opkg

# edit /etc/opkg.conf for extroot
opkg update
opkg list-upgradable
opkg install unzip
opkg install screen
opkg install coreutils-ls coreutils-stty
opkg install dropbearconvert
opkg install e2fsprogs fdisk dosfstools badblocks tune2fs
opkg install avahi-utils avahi-daemon-service-ssh
# opkg install kmod-fs-f2fs mkf2fs f2fsck 
opkg install rsync
opkg install diffutils
opkg install logrotate
opkg install mg
opkg install openssh-client --force-overwrite
opkg install procps-ng procps-ng-ps procps-ng-w procps-ng-vmstat procps-ng-watch
opkg install procps-ng-top --force-overwrite

mkdir -p -m 1777 /usr/local/var/tmp
export TMPDIR=/usr/local/var/tmp
opkg install python-pip
opkg install python-six
# Edit /etc/pip.conf
#   cache-dir=/usr/local/var/tmp/.cache
#   log-file=/usr/local/var/tmp/pip-log.txt
# pip install --upgrade pip
pip install beaver
pip install supervisor
If OOM occurs, re-run pip. or use swap
python supervisor startup script for OpenWrt-yun
my local setup
/etc/init.d/cron enable
/etc/init.d/cron start

dosfsck --> fsck.fat

cd /
umount /mnt/sda1
fsck.fat -y -v -w /dev/sda1
mount /dev/sda1 /mnt/sda1

cd /usr/sbin
ln -s fsck.fat dosfsck

fsck

opkg install badblocks

e2fsck -t -y -f -c /dev/sda2

YunFirstConfig

https://www.arduino.cc/en/Tutorial/YunFirstConfig

https://github.com/arduino-libraries/Bridge/tree/master/examples/YunFirstConfig

Luci and arduino-webpanel

https://github.com/arduino/lede-yun/commit/565508f99cc8922d55b47554de98f7dcb441a461#diff-f2fe3255fb192223dd3dbef288fe215f

mDNS

host-name-from-machine-id=no
host-name=MY_HOST_NAME
domain-name=local

homebridge

opkg install node-homebridge
opkg install sudo
npm install -g homebridge-temperature-cmd
npm install -g homebridge-humidity-cmd

IGMP querierd

opkg install querierd

edit /etc/querierd

supesify a interface
/etc/init.d/querierd enable
/etc/init.d/querierd start

drop caches

echo 3 > /proc/sys/vm/drop_caches

network

eth1 -> wan
wlan0 -> lan

/etc/config/network
/etc/config/firewall
/etc/config/dhcp

Secure

Secure your router's access

Dropbear Security

revision check

./scripts/getver.sh

Bricked

My Yún doesn't boot anymore! How can I restore it?

Load YunSerialTerminal to enable serial console. Unplug SD card . Press 'YUN RST' button.

  1. If the prompt is out && if the OS can operable.
    1. Enabling the network. 
      ifconfig IF IP
route add default gw somewhere
      Edit /etc/resolv.conf
    2. Bring the official sysupgrade image via SD card. 
      mkdir /mnt/sda1
mount -t vfat /dev/sda1 /mnt/sda1
  2. If you can operate the u-boot via YunSerialTerminal.
    1. https://www.arduino.cc/en/Tutorial/YunUBootReflash

TO DO

  1. uboot-linino
    Once the bootloader rewrite fails, I am afraid that completely become brick...
  2. /etc/opkg.conf, /etc/opkg/distfeeds.conf, /etc/opkg/customfeeds.conf
    Since the strange message came out, modified distfeeds.conf, It is correct to modify opkg.conf.
    • opkg_conf_parse_file: Duplicate src declaration
    https://wiki.openwrt.org/doc/techref/opkg
    https://wiki.openwrt.org/doc/packages
    Specification seems not yet settled.
  3. OOM
    (extroot environment)
    /etc/opkg/distfeeds.conf : Limit repositories.
    /etc/opkg.conf : lists_dir ext /var/opkg-lists place not tmpfs. ex. lists_dir ext /usr/local/var/opkg-lists
    /etc/opkg.conf : Add 'option force_space'
    lists_dir ext /usr/local/var/opkg-lists
option tmp_dir /usr/local/var/tmp
option force_space
    Anyway, Do not place any objects to /tmp and /var (symlink of /tmp).
  4. sysupgrade with ExtRoot
    sysupgrade with ExtRoot :: wiki.mbirth.de
    sysupgrade ...
# reboot...
rm /mnt/sda2/etc/.extroot-uuid
reboot
#...
opkg update
opkg upgrade $(opkg list-upgradable | awk '($1 !~ "^kmod|Multiple") {print $1}')
  5. LEDE Project
    https://www.lede-project.org/
  6. Kernel 4.4
    How can I reduce kernel size?
    It does not fit in 1280k.
    ar71xx: make arduino yun work with kernel size > 1280k and use generic.mk by camille-hack · Pull Request #1145 · lede-project/source
    ar71xx: make arduino yun work with kernel size > 1280k and use generic.mk by camille-hack · Pull Request #1145 · lede-project/source
    Merged!!!
  7. PKG DPENDS 
    To find missing library provider, if the case is not obvious (usually it is just a library name), you may search in $STAGING_DIR/pkginfo folder.
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