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

3.2.1.1. 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

3.2.1.2. 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

3.2.1.3. Dual Camera CAM-2MS2MF Compile

3.2.1.3.1. HDMI+CAM-2MS2MF
  • modify dts

--- a/kernel-5.10/arch/arm64/boot/dts/rockchip/rk3588-firefly-itx-3588j.dts
+++ b/kernel-5.10/arch/arm64/boot/dts/rockchip/rk3588-firefly-itx-3588j.dts
@@ -8,8 +8,8 @@

 #include "rk3588-firefly-itx-3588j.dtsi"
-#include "rk3588-firefly-itx-cam-8ms1m.dtsi"
-//#include "rk3588-firefly-itx-cam-2ms2mf.dtsi"
+//#include "rk3588-firefly-itx-cam-8ms1m.dtsi"
+#include "rk3588-firefly-itx-cam-2ms2mf.dtsi"
 #include "rk3588-firefly-demo.dtsi"
  • Compile

./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

3.2.1.4. HDMI TO MIPI_CSI(RK628D) Compile

  • modify dts

--- a/kernel-5.10/arch/arm64/boot/dts/rockchip/rk3588-firefly-itx-3588j.dts
+++ b/kernel-5.10/arch/arm64/boot/dts/rockchip/rk3588-firefly-itx-3588j.dts
@@ -7,9 +7,9 @@
 /dts-v1/;

 #include "rk3588-firefly-itx-3588j.dtsi"
-#include "rk3588-firefly-itx-cam-8ms1m.dtsi"
+//#include "rk3588-firefly-itx-cam-8ms1m.dtsi"
 //#include "rk3588-firefly-itx-cam-2ms2mf.dtsi"
-//#include "rk3588-firefly-itx-3588j-tf-hdmi-mipi-rk628.dtsi"
+#include "rk3588-firefly-itx-3588j-tf-hdmi-mipi-rk628.dtsi"
 #include "rk3588-firefly-demo.dtsi"
  • Compile

./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

3.2.2. Step by step to compile

  • Compile the kernel:

cd ~/proj/RK3588_Android12.0/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 ~/proj/RK3588_Android12.0/u-boot/
./make.sh rk3588
  • Compile Android:

cd ~/proj/RK3588_Android12.0/
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-rk3588_firefly_itx_3588j/ 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.

3.3. Some Introduction about Compiling

3.3.1. Android12.0 can’t be upgraded directly kernel.img and resource.img

kernel.img and resource.img for Android12.0 are included in boot.img, After compiling the kernel, you need to run the ./mkimage.sh command in the android root directory to repackage boot.img, and then upgrade boot.img of the rockdev/Image-rk3588_firefly_itx_3588j/ directory.

3.3.2. Compiling kernel generation separately boot.img

Principle of compilation: in the kernel directory, the generated kernel.img And resource.img Replace with old boot.img, so you need to use BOOT_IMG=XXX parameter specification boot.img when compiling. The command is as follows:

cd ~/proj/RK3588_Android12.0/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

After compiling, boot.img in the kernel directory can be directly upgrade.

3.4. Partition image

When compiling, executing ./mkimage.sh will repackage boot.img and super.img, and copy other related image files to the directory rockdev/Image-rk3588_firefly_itx_3588j/. The following lists the image files used by general firmware:

Image Instruction
boot.img including ramdis、kernel、dtb
dtbo.img Device Tree Overlays
MiniLoaderAll.bin including first level loader
misc.img including recovery-wipe boot symbol information, after flashing it will enter recovery
parameter.txt including partition information
recovery.img including recovery-ramdis、kernel、dtb
super.img including the contents of odm、vendor、system partitions
uboot.img including uboot image
vbmeta.img including avb verification information, used for AVB verification
update.img including the above img files to be flashed, can be used for the tool to directly flash the whole image package

For details about how to upgrade a partition image file, see Upgrade the firmware via USB cable.

3.5. OTA Compilation

Refer to the OTA Compilation section

3.6. FAQs

3.6.1. git clone remote bundle repository failed

Q: Error occurred in git clone remote bundle repository while updating SDK:

$ git clone https://gitlab.com/T-Firefly/rk3588-android12.0-bundle.git .bundle
Cloning into '.bundle'...
remote: Enumerating objects: 20, done.
remote: Counting objects: 100% (20/20), done.
remote: Compressing objects: 100% (18/18), done.
error: RPC failed; curl 56 GnuTLS recv error (-9): A TLS packet with unexpected length was received.
fatal: the remote end hung up unexpectedly
fatal: early EOF
fatal: unpack-objects failed

A: The buffer size is insufficient and needs to be enlarged:

git config --global https.postBuffer 1048576000