Boards

Allwinner:      # NanoPi NEO Plus2 & Tritium
Amlogic:        # Le Potato, Odroid C4/N2/N2+ & Radxa Zero
Broadcom:       # Raspberry Pi 4B
Rockchip:       # NanoPC-T4, Renegade & ROCKPro64

Dependencies for Debian Bullseye and Ubuntu Focal / Jammy Jellyfish

• Recommended host: Debian Bullseye

Install options:

• Run the ./install script (recommended)
• Run builder make commands (dependency: make)
• Review package list and install manually

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Instructions

Install dependencies

make ccompile   # Cross compile
make ncompile   # Native compile

Menu interface

make config     # Create user data file
make menu       # Open menu interface
make dialogrc   # Set builder theme (optional)

Config Menu

• Review the userdata.txt file for further options: locales, timezone and nameserver(s)

Name:		# Whats your name?
Username:       # Your username
Password:       # Your password
Branding:       # Set ASCII text banner
Hostname:       # Set system hostname

Distribution
Distro:         # Supported: debian, devuan and ubuntu
Release:	# Debian: bullseye, bookwork, testing, unstable and sid
		# Devuan: chimaera, daedalus, testing, unstable and ceres
		# Ubuntu: focal, impish and jammy

U-Boot and Linux
U-Boot:         # Supported: v2022.01
Branch:         # Supported: 5.15
Build:          # Kernel build version number
RC:             # 1 for any x.y-rc
Menuconfig:     # 1 to run uboot and kernel menuconfig
Compiler:       # Defaults at gcc-10
Crosscompile:   # 1 to cross compile | 0 to native compile
Caching on:     # 1 to enable ccache

Extra wireless support
rtl88XXau:      # 1 to add Realtek 8812AU/21AU wireless support
rtl88XXbu:      # 1 to add Realtek 88X2BU wireless support
rtl88XXcu:      # 1 to add Realtek 8811CU/21CU wireless support
rtl8188eu:      # 1 to add Realtek 8188EU wireless support

Customize (user defconfig)
Defconfig:	# 1 to enable
Name:		# Name of _defconfig (Must be placed in defconfig dir.)

User defconfig

# config placement: defconfig/$NAME_defconfig
The config menu will append _defconfig to the end of the name in the
userdata.txt file.

User patches

Patches "-p1" placed in patches/userpatches are applied during compilation.

Aircrack (rtl88XXau)

# change from 0 to 1
aircrack=0

Compression (turn off)

# change from 1 to 0
auto=1        # compresses to img.xz

eMMC (Odroid N2/+ and Radxa Zero)

# change from 0 to 1
emmc=0

Miscellaneous

make cleanup    # Clean up image errors
make purge      # Remove sources directory
make purge-all  # Remove sources and output directory

Notes

• Radxa Zero: Maskrom \ Fastboot

You need to erase Android from; or flash mainline u-boot to; the eMMC before booting from SD.
I found using fastboot to be the quickest and easiest method when using Linux.

Put the device in maskrom mode and run lsusb to verify.

Bus 001 Device 048: ID 1b8e:c003 Amlogic, Inc. GX-CHIP

Run the following to flash mainline u-boot. When done. power down board, insert SD and power on.

sudo apt update; sudo apt install -y python3-pip fastboot
sudo pip3 install pyamlboot --upgrade
wget -cq https://github.com/pyavitz/debian-image-builder/raw/feature/files/boot/rz-fastboot-loader.bin
wget -cq https://github.com/pyavitz/debian-image-builder/raw/feature/files/boot/rz-u-boot.bin
boot-g12.py rz-fastboot-loader.bin
sudo fastboot flash 0x200 rz-u-boot.bin
sudo fastboot reboot

• Radxa Zero: HDMI Audio

sudo amixer sset 'FRDDR_A SINK 1 SEL' 'OUT 1'
sudo amixer sset 'FRDDR_A SRC 1 EN' 'on'
sudo amixer sset 'TDMOUT_B SRC SEL' 'IN 0'
sudo amixer sset 'TOHDMITX I2S SRC' 'I2S B'
sudo amixer sset 'TOHDMITX' 'on'
sudo amixer sset 'FRDDR_B SINK 1 SEL' 'OUT 2'
sudo amixer sset 'FRDDR_B SRC 1 EN' 'on'
sudo amixer sset 'FRDDR_C SINK 1 SEL' 'OUT 3'
sudo amixer sset 'FRDDR_C SRC 1 EN' 'on'
sudo alsactl store

• Radxa Zero: Rev. 1.5 LED Support

sudo mkdir -p /etc/initramfs/post-update.d/
sudo wget -cq https://github.com/pyavitz/debian-image-builder/raw/feature/files/boot/99-xled -P /etc/initramfs/post-update.d/
sudo chmod +x /etc/initramfs/post-update.d/99-xled
sudo chown root:root /etc/initramfs/post-update.d/99-xled
sudo /etc/initramfs/post-update.d/99-xled

Usage

/boot/rename_to_credentials.txt

Rename file to credentials.txt and input your wifi information.

SSID=" "			# Service set identifier
PASSKEY=" "			# Wifi password
COUNTRYCODE=" "			# Your country code

# set static ip
MANUAL=n			# Set to y to enable a static ip
IPADDR=" "			# Static ip address
NETMASK=" "			# Your Netmask
GATEWAY=" "			# Your Gateway
NAMESERVERS=" "			# Your preferred dns

For headless use: ssh user@ipaddress

Note:
You can also mount the ROOTFS partition and edit the following
files, whilst leaving rename_to_credentials.txt untouched.

/etc/opt/interfaces.manual
/etc/opt/wpa_supplicant.manual

Write to eMMC

Supported: Le Potato, NanoPi NEO Plus2, NanoPC-T4, Odroid C4/N2/N2+, Radxa Zero & Renegade
1. Attach eMMC module       # In some cases the module may need to be attached after boot
2. Boot from sdcard
3. Execute: sudo write2mmc

EEPROM

Raspberry Pi 4B EEPROM Helper Script
Usage: deb-eeprom -h

   -U       Upgrade eeprom package
   -w       Transfer to USB	# Supported: EXT4, BTRFS and F2FS
   -u       Update script

Note:
Upon install please run 'deb-eeprom -u' before using this script.

Simple wifi helper

swh -h

   -s       Scan for SSID's
   -u       Bring up interface
   -d       Bring down interface
   -r       Restart interface
   -W       Edit wpa supplicant
   -I       Edit interfaces

CPU frequency scaling

governor -h

   -c       Conservative
   -o       Ondemand
   -p       Performance
   -s       Schedutil

   -r       Run
   -u       Update
   
A systemd service runs 'governor -r' during boot.

Overclocking

• NanoPC-T4, Odroid N2/+, Radxa Zero & ROCKPro64

The boards run slightly under clocked by default. If you decide to overclock the board, make sure you are using passive or active cooling.

echo "overclock=1" | sudo tee /etc/opt/overclock.txt
sudo service tweaks restart

Odroid N2 Fan Control

Install script and service

sudo wget https://raw.githubusercontent.com/pyavitz/scripts/master/fan-ctrl -P /usr/local/bin
sudo chmod +x $(command -v fan-ctrl)

Debian / Ubuntu

sudo tee /etc/systemd/system/odroid-fan-ctrl.service <<EOF
[Unit]
Description=Odroid Fan Control
ConditionPathExists=/usr/local/bin/fan-ctrl

[Service]
ExecStart=/usr/local/bin/fan-ctrl -r &>/dev/null
Type=oneshot
RemainAfterExit=yes

[Install]
WantedBy=multi-user.target
EOF
sudo systemctl enable odroid-fan-ctrl

Devuan

sudo wget -cq https://raw.githubusercontent.com/pyavitz/scripts/master/fan-ctrl.init -P /etc/init.d -O /etc/init.d/fan-ctrl
sudo chmod +x /etc/init.d/fan-ctrl
sudo update-rc.d fan-ctrl defaults 2

Set trip point

Odroid N2 Trip Point
Usage: fan-ctrl -h

   -1       65°C
   -2       55°C
   -3       45°C
   -4       35°C

   -r       Run
   -u       Update
   
A service runs 'fan-ctrl -r' during boot.

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Support

Should you come across any bugs, feel free to either open an issue on GitHub or talk with us directly by joining our channel on Libera; #arm-img-builder