44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
# Setup build envoronment
|
|
https://source.android.com/setup/build/initializing
|
|
$ sudo apt install libssl-dev python3-setuptools
|
|
|
|
# Download Android source
|
|
https://github.com/android-rpi/local_manifests
|
|
|
|
# Build Android
|
|
Refer to http://source.android.com/source/building.html
|
|
|
|
$ source build/envsetup.sh
|
|
$ lunch rpi4-eng
|
|
$ make ramdisk systemimage vendorimage
|
|
|
|
Use -j[n] option with make, if build host has a good number of CPU cores.
|
|
|
|
|
|
# Prepare sd card
|
|
Partitions of the card should be set-up like followings.
|
|
p1 128MB for boot : Do fdisk, set W95 FAT32(LBA) & Bootable type, mkfs.vfat
|
|
p2 1024MB for /system : Do fdisk, new primary partition
|
|
p3 128MB for /vendor : Do fdisk, new primary partition
|
|
p4 remainings for /data : Do fdisk, mkfs.ext4
|
|
Set volume label of /data partition as userdata
|
|
: use -L option for mkfs.ext4
|
|
|
|
# Write system & vendor partition
|
|
$ cd out/target/product/rpi4
|
|
$ sudo dd if=system.img of=/dev/<p2> bs=1M
|
|
$ sudo dd if=vendor.img of=/dev/<p3> bs=1M
|
|
|
|
# Copy firmware & ramdisk to boot partition
|
|
device/arpi/rpi4/boot/* to p1:/
|
|
out/target/product/rpi4/ramdisk.img to p1:/
|
|
|
|
|
|
# Download & Build kernel source
|
|
https://github.com/android-rpi/kernel_manifest
|
|
|
|
# Copy kernel binaries to boot partition
|
|
<kernel directory>/out/arpi-5.15/dist/Image.gz to p1:/
|
|
<kernel directory>/out/arpi-5.15/dist/bcm2711-rpi-*.dtb to p1:/
|
|
<kernel directory>/out/arpi-5.15/dist/vc4-kms-v3d-pi4.dtbo to p1:/overlays/
|