1.2. Building the SDK¶
1.2.1. Build PC Setup¶
Please refer to the following pages from Android documentatio to setup your environment for Android build:
Getting the Repo tool
You will need the Repo tool to retrieve repositories. To install it, please refer to this webpage : https://source.android.com/setup/develop#installing-repo
Getting toolchain for u-boot builds
Links to download toolchains for building u-boot is mentioned in the SDK download page.
1.2.2. Downloading Sources¶
Create a folder for downloading all sources
mkdir ~/08_03_00 && cd $_
export YOUR_PATH=$PWD
1.2.2.1. Bootloader components¶
mkdir ${YOUR_PATH}/ti-bootloader-aosp/ && cd $_
git clone -b 08.03.00.005 git://git.ti.com/k3-image-gen/k3-image-gen.git
git clone -b 08.03.00.005 git://git.ti.com/atf/arm-trusted-firmware.git
git clone -b 08.03.00.005 git://git.ti.com/optee/ti-optee-os.git
git clone -b 08.03.00.005 git://git.ti.com/ti-u-boot/ti-u-boot.git
git clone -b 08.03.00.005 git://git.ti.com/processor-firmware/ti-linux-firmware.git
1.2.2.2. Kernel¶
Fetch the code using repo:
mkdir ${YOUR_PATH}/ti-kernel-aosp/ && cd $_
repo init -u git://git.ti.com/android/manifest.git -b android12-core-release -m releases/RLS_08_03_Kernel.xml
repo sync
1.2.2.3. Android File System¶
Fetch the code using repo:
mkdir ${YOUR_PATH}/ti-aosp-12 && cd $_
repo init -u git://git.ti.com/android/manifest.git -b android12-core-release -m releases/RLS_08_03.xml
repo sync
1.2.3. Build Instructions¶
Note
The Bootloader and Kernel builds below are optional if they are used as is from TI relase. Prebuilt copies of these
binaries are already part of Android file system sources in device/ti/am62x-kernel and
vendor/ti/am62x/bootloader folder.
1.2.3.1. Bootloader components¶
- Build tiboot3.bin
cd ${YOUR_PATH}/ti-bootloader-aosp/ti-u-boot/
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- am62x_evm_r5_defconfig O=/tmp/r5
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- O=/tmp/r5
cd ${YOUR_PATH}/ti-bootloader-aosp/k3-image-gen
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf- SOC=am62x SBL=/tmp/r5/spl/u-boot-spl.bin SYSFW_PATH=${YOUR_PATH}/ti-bootloader-aosp/ti-linux-firmware/ti-sysfw/ti-fs-firmware-am62x-gp.bin
Use the tiboot3.bin generated from last command in ${YOUR_PATH}/ti-bootloader-aosp/k3-image-gen
- Build tispl.bin and u-boot.img
In order to build tispl.bin and u-boot.img, OPTEE and ATF (arm trusted firmware) need to be built.
cd ${YOUR_PATH}/ti-bootloader-aosp/arm-trusted-firmware
make CROSS_COMPILE=aarch64-none-linux-gnu- ARCH=aarch64 PLAT=k3 TARGET_BOARD=lite SPD=opteed
cd ${YOUR_PATH}/ti-bootloader-aosp/ti-optee-os
make PLATFORM=k3 CFG_ARM64_core=y CROSS_COMPILE=arm-none-linux-gnueabihf- CROSS_COMPILE64=aarch64-none-linux-gnu-
It is now possible to generate tispl.bin and u-boot.img.
cd ${YOUR_PATH}/ti-bootloader-aosp/ti-u-boot/
make ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- am62x_evm_a53_defconfig O=/tmp/a53
make ARCH=arm CROSS_COMPILE=aarch64-none-linux-gnu- ATF=${YOUR_PATH}/ti-bootloader-aosp/arm-trusted-firmware/build/k3/lite/release/bl31.bin TEE=${YOUR_PATH}/ti-bootloader-aosp/ti-optee-os/out/arm-plat-k3/core/tee-pager_v2.bin DM=${YOUR_PATH}/ti-bootloader-aosp/ti-linux-firmware/ti-dm/am62xx/ipc_echo_testb_mcu1_0_release_strip.xer5f O=/tmp/a53
Use tispl.bin and u-boot.img located in /tmp/a53
- Copy the tiboot3.bin, tispl.bin and u-boot.img generated in steps 1 and 2 to
${YOUR_PATH}/ti-aosp-12/vendor/ti/am62x/bootloader. If not copied, the prebuilt bootloader binaries already present in vendor/ti/am62x/bootloader will get use by flashall.sh flashing script.
1.2.3.2. Kernel¶
1.2.3.2.1. Building everything from scratch¶
cd ${YOUR_PATH}/ti-kernel-aosp/
export DIST_DIR=${YOUR_PATH}/ti-aosp/device/ti/am62x-kernel/kernel/5.10
export BUILD_CONFIG=./imgtech-module/build.config.imgtech
build/build.sh
1.2.3.2.2. Rebuilding incrementally¶
Add the SKIP_MRPROPER=1 flag:
$ cd ${YOUR_PATH}/ti-kernel-aosp/
$ export DIST_DIR=${YOUR_PATH}/ti-aosp/device/ti/am62x-prebuilts/kernel/5.10
$ export BUILD_CONFIG=./imgtech-module/build.config.imgtech
$ export SKIP_MRPROPER=1
$ build/build.sh
1.2.3.3. Android File System¶
cd ${YOUR_PATH}/ti-aosp-12
source build/envsetup.sh
lunch am62x-userdebug
m
After building all components, refer to instruction in next section for flashing the images to EVM