3. Compile Android12.0 firmware¶

3.1. Download Android12.0 SDK¶

SDK source code and bundle compression package are stored in the Google Drive.

3.1.1. Download Android SDK¶

The SDK can be obtained by email. Send the order number to sales@t-firefly.com and indicate the required SDK name firefly_rk3588_android12.0_git_20220311

After downloading, verify the MD5 code:

 $ md5sum /path/to/firefly_rk3588_android12.0_git_20220311.7z.001
 $ md5sum /path/to/firefly_rk3588_android12.0_git_20220311.7z.002
 $ md5sum /path/to/firefly_rk3588_android12.0_git_20220311.7z.003
 $ md5sum /path/to/firefly_rk3588_android12.0_git_20220311.7z.004
 $ md5sum /path/to/firefly_rk3588_android12.0_git_20220311.7z.005
 $ md5sum /path/to/firefly_rk3588_android12.0_git_20220311.7z.006

 8f48ca82f247426d0a7111b851d65f0f  firefly_rk3588_android12.0_git_20220311.7z.001
 e99d68485860b86c2ec5b67aeda7249d  firefly_rk3588_android12.0_git_20220311.7z.002
 cb45fc9e39848b459398467c08acd6f1  firefly_rk3588_android12.0_git_20220311.7z.003
 7774a64cc73dbf4381c100ad1d703fa9  firefly_rk3588_android12.0_git_20220311.7z.004
 cd53c8c752a5162a0638da1cf9a0ed8f  firefly_rk3588_android12.0_git_20220311.7z.005
 fd7744c8098791a8f1dd62527fcac32c  firefly_rk3588_android12.0_git_20220311.7z.006

After confirming that it is correct, we can unzip:
```
 cd ~/proj/
 7z x ./firefly_rk3588_android12.0_git_20220311.7z.001 -oRK3588_Android12.0
 cd ./RK3588_Android12.0
 git reset --hard
```
Attention: To avoid unnecessary errors, please do not unzip the SDK in shared folders, mounted folders or non-english directories.

3.1.1.1. Second, Update SDK¶

Note: Be sure to update the remote warehouse after decompression. The following is how to update from gitlab:

1. Enter the SDK root directory
cd ~/proj/RK3588_Android12.0

2. Download remote bundle repository
git clone https://gitlab.com/T-Firefly/rk3588-android12.0-bundle.git .bundle

3. If the download warehouse fails, it may be stuck or failed problems during synchronization. 
we can download and unzip it from the cloud disk link below to the SDK root directory.

7z x rk3588-android12.0-bundle.7z  -r -o. && mv rk3588-android12.0-bundle .bundle

4. Update the SDK, and subsequent updates do not need to pull the remote warehouse again, just execute the following command
.bundle/update

5. Follow the prompts to update the content to FETCH_HEAD, synchronize FETCH_HEAD to the firefly branch
git rebase FETCH_HEAD

Google Driver Android12.0 Bundle。

3.2. Core-3588J product compilation method¶

3.2.1. The overall compilation¶

HDMI Firmware Compilation

./FFTools/make.sh -d rk3588-firefly-itx-3588j -j8 -l rk3588_firefly_itx_3588j-userdebug
./FFTools/mkupdate/mkupdate.sh -l rk3588_firefly_itx_3588j-userdebug

10.1‘ MIPI DSI0 Firmware Compilation：

./FFTools/make.sh -d rk3588-firefly-itx-3588j-mipi101-M101014-BE45-A1 -j8 -l rk3588_firefly_itx_3588j_mipi-userdebug
./FFTools/mkupdate/mkupdate.sh -l rk3588_firefly_itx_3588j_mipi-userdebug

3.2.2. Step by step to compile¶

Compile the kernel:

cd ~/path/to/sdk/kernel-5.10
export PATH=../prebuilts/clang/host/linux-x86/clang-r416183b/bin:$PATH
alias msk='make CROSS_COMPILE=aarch64-linux-gnu- LLVM=1 LLVM_IAS=1'
msk ARCH=arm64  firefly_defconfig android-11.config pcie_wifi.config
msk ARCH=arm64   BOOT_IMG=../rockdev/Image-rk3588_firefly_itx_3588j/boot.img rk3588-firefly-itx-3588j.img -j8

Compile uboot:

cd ~/path/to/sdk/u-boot/
./make.sh rk3588

Compile Android：

cd ~/path/to/sdk/
source build/envsetup.sh
lunch rk3588_firefly_itx_3588j-userdebug
make installclean
make -j8
./mkimage.sh

3.2.3. Packaged into unified firmware update.img¶

After compilation, you can use Firefly official scripts to package into unified firmware, execute the following command：

./FFTools/mkupdate/mkupdate.sh -l rk3588_firefly_itx_3588j-userdebug

After packaging, it will be in rockdev/Image-XXX/ Generate unified firmware under the directory: (product name )XXX_XXX_date XXX.img

It is also very simple to package the unified firmware update.img under Windows. Copy the generated files to the rockdev \ Image directory of AndroidTool, and then run the mkupdate.bat batch file under the rockdev directory to create up date.img and store it in rockdev \ Image directory.