Build buildroot and kernel in

See ./superbird/scripts

Make ESP32s3 WiFi dongle for superbird

See ./esp32-wifi-ncm

Restore (unbrick)

Based on https://github.com/alexcaoys/notes-superbird

Install superbird-tool

git clone https://github.com/thinglabsoss/superbird-tool
python3 -m venv .venv 
source .venv/bin/activate
python3 -m pip install git+https://github.com/superna9999/pyamlboot
./superbird_tool.py --find_device

Restore partitions with unbrick tool

#30 (comment)

Power device with 1 and 4 buttons pressed

./superbird_tool.py --burn_mode
chmod +x ../files/Carthing/Unbrick/update
../files/Carthing/Unbrick/update bulkcmd "mmc dev 1"
../files/Carthing/Unbrick/update bulkcmd "amlmmc key"
../files/Carthing/Unbrick/update mwrite ../files/Carthing/Unbrick/unbrick.bin mem 0x1080000 normal
../files/Carthing/Unbrick/update bulkcmd "mmc write 0x1080000 0 125000"

Wait 10 sec and unplug

Restore from dump

 ./superbird_tool.py --restore_device ../files/dump/

Wait 10 sec and unplug

Install Buildroot permanent

Partitioning

Tutorial from here

Save and decrypt dtb

./superbird_tool.py --burn_mode
./superbird_tool.py --enable_burn_mode
./superbird_tool.py --disable_avb2 a

Uplug and plug back

./superbird_tool.py --boot_adb_kernel a

Wait a bit

adb pull /proc/device-tree ../files/dtb/device-tree
dtc -I fs ../files/dtb/device-tree -o ../files/dtb/decrypted.dtb
./superbird_tool.py --disable_burn_mode

Boot into initrd

Download

./superbird_tool.py --burn_mode
cd ../files/boot_initrd/initrd/
python3 ./amlogic_device.py --initrd ./env_initrd.txt ./Image_6.6.41 ./rootfs.cpio.uboot ./meson-g12a-superbird.dtb

Setup host for g_ether

More info here

Create rule /etc/udev/rules.d/99-usb-ether.rules

SUBSYSTEM=="net", ATTRS{idVendor}=="0525", ATTRS{idProduct}=="a4a2", NAME="usb_ether"

Update and reload rules

sudo udevadm control --reload-rules && sudo udevadm trigger

Update ip tables

sudo sysctl net.ipv4.ip_forward=1
sudo iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
sudo iptables -A FORWARD -s 172.16.42.0/24 -j ACCEPT
sudo iptables -A POSTROUTING -t nat -j MASQUERADE -s 172.16.42.0/24
sudo iptables-save

Start g_ether and ssh into it (pwd: buildroot)

sudo ip addr add 172.16.42.1/24 dev usb_ether
sudo ip link set usb_ether up
ssh [email protected]

Backup bootloader and encrypted dtb

dd if=/dev/mmcblk2 of=bootloader.img bs=1M count=4
dd if=/dev/mmcblk2 of=stock_dtb.img bs=256K skip=160 count=2

scp bootloader.img [email protected]:'/home/err4o4/Desktop/Car Thing/files/bootloader/bootloader.img'
scp stock_dtb.img [email protected]:'/home/err4o4/Desktop/Car Thing/files/dtb/stock_dtb.img'

Restore decrypted dtb

scp [email protected]:'/home/err4o4/Desktop/Car Thing/files/dtb/decrypted.dtb' decrypted.dtb
dd if=decrypted.dtb of=/dev/mmcblk2 bs=256K seek=160 conv=notrunc
dd if=decrypted.dtb of=/dev/mmcblk2 bs=256K seek=161 conv=notrunc
sync

Save stock partitions with ampart

./ampart-v1.4-aarch64-static /dev/mmcblk2 --mode esnapshot

Copy output to file ampart.txt for backup

Restore the following snapshot using

./ampart-v1.4-aarch64-static /dev/mmcblk2 --mode eclone bootloader:0B:4M:0 reserved:36M:64M:0 cache:108M:0B:0 env:116M:8M:0 fip_a:132M:4M:0 fip_b:144M:4M:0 data:156M:-1:4

Create new MBR partition tables

parted
> unit MiB          # use sector as unit (easy to check)
> print             # check if the mmc shows
> mktable msdos     # create new mbr table
> mkpart primary fat32 4MiB 36MiB       # Use the empty section as /boot
> mkpart primary ext4 156MiB 3727MiB    # Change the end accordingly
> quit

Restore bootloader

dd if=bootloader.img of=/dev/mmcblk2 conv=fsync,notrunc bs=1 count=444
dd if=bootloader.img of=/dev/mmcblk2 conv=fsync,notrunc bs=512 skip=1 seek=1

Format the partitions and mount the boot partition

mkfs.fat -F 16 /dev/mmcblk2p1
mkfs.ext4 /dev/mmcblk2p2 

Restore rootfs

Download rootfs from here

./superbird_tool.py --burn_mode
cd ../notes-superbird/
 python3 amlogic_device.py -r 319488 '/home/err4o4/Desktop/Car Thing/files/buildroot/rootfs.ext4'

Make bootable

Download kernel and dtb from here

./superbird_tool.py --burn_mode
cd ../files/boot_initrd/initrd/
python3 ./amlogic_device.py --initrd ./env_initrd.txt ./Image_6.6.41 ./rootfs.cpio.uboot ./meson-g12a-superbird.dtb

sudo ip addr add 172.16.42.1/24 dev usb_ether
sudo ip link set usb_ether up
ssh [email protected]

/root/init_resize2fs.sh
mount /dev/mmcblk2p1 /boot

scp [email protected]:'/home/err4o4/Desktop/Car Thing/files/buildroot/Image' /boot
scp [email protected]:'/home/err4o4/Desktop/Car Thing/files/buildroot/meson-g12a-superbird.dtb' /boot/superbird.dtb
scp [email protected]:'/home/err4o4/Desktop/Car Thing/notes-superbird/uboot_envs/env_p2.txt' /boot/bootargs.txt

./superbird_tool.py --send_full_env '/home/err4o4/Desktop/Car Thing/notes-superbird/uboot_envs/env_full_custom.txt'

Reboot