硬體資訊： friefly3399一塊，2GB記憶體/16Gemmc。
軟體資訊： ubuntu18.04虛拟機，内部有firefly的SDK包。
參考資料：[ROC-RK3399-PC Pro] 手把手教你移植主線U-Boot（基于v2022.04-rc5版本）_Neutionwei的部落格-CSDN部落格
目标移植uboot2022.10到firefly3399開發闆
一、下載下傳uboot源碼
1.1 git 下載下傳,需要安裝git工具！！
git clone [email protected]:u-boot/u-boot.git
1.2 出現問題：
[email protected]:~/3399/system/2022-11-27$ git clone [email protected]:u-boot/u-boot.git
Cloning into 'u-boot'...
The authenticity of host 'github.com (20.205.243.166)' can't be established.
ECDSA key fingerprint is SHA256:p2QAMXNIC1TJYWeIOttrVc98/R1BUFWu3/LiyKgUfQM.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'github.com,20.205.243.166' (ECDSA) to the list of known hosts.
[email protected]: Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
1.3 解決問題，主要是github賬号授權的問題。解決的步驟（參考百度）：
1.ssh-keygen -t rsa -C [email protected] (注意修改，是自己的github賬号的郵箱位址)
2.ssh -v [email protected]
3.ssh-agent -s
4.ssh-add ~/.ssh/id_rsa （出錯（Could not open a connection to your authentication agent.）繼續第5步，沒錯則跳過5，6）
5.eval `ssh-agent -s`
6.ssh-add ~/.ssh/id_rsa
7.cat ~/.ssh/id_rsa.pub 列印出來的資料，貼到github中的賬号中去。
8.打開自己的github的賬号，在settings下，SSH and GPG keys下new SSH key，title随便取一個名字，然後将id_rsa.pub裡的内容複制到Key中，完成後Add SSH Key。
9. 驗證：ssh -T [email protected] 提示successfully 即表示成功
1.4 繼續下載下傳
git clone [email protected]:u-boot/u-boot.git
1.5 檢視版本資訊
cd uboot/
git tag 使用空格列印出更多
1.6 切換分支，我這裡選項2022.10.rc5
git checkout -b v2022.10-rc5 v2022.10-rc5
二、源碼編譯
2.1 需要準備交叉編譯環境。
我自己的環境有一個編譯器，是firefly中自帶的。
1.查找一下，發現有該編譯器
[email protected]:~/3399/system/rk3399_linux_release_v2.5.1_20210301$ find -name aarch64-linux-gnu*
2.沒有的話，可以自行下載下傳
git clone https://gitlab.com/firefly-linux/prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu
3.設定環境變量PATH，根據自己的目錄更改吧
export PATH=/home/zhi/3399/system/rk3399_linux_release_v2.5.1_20210301/prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin:$PATH
4. 檢視指令是否正常
aarch64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/home/zhi/3399/system/rk3399_linux_release_v2.5.1_20210301/prebuilts/gcc/linux-x86/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/../libexec/gcc/aarch64-linux-gnu/6.3.1/lto-wrapper
Target: aarch64-linux-gnu
Configured with: '/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/snapshots/gcc.git~linaro-6.3-2017.05/configure' SHELL=/bin/bash --with-mpc=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu --with-mpfr=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gmp=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu --with-gnu-as --with-gnu-ld --disable-libmudflap --enable-lto --enable-shared --without-included-gettext --enable-nls --disable-sjlj-exceptions --enable-gnu-unique-object --enable-linker-build-id --disable-libstdcxx-pch --enable-c99 --enable-clocale=gnu --enable-libstdcxx-debug --enable-long-long --with-cloog=no --with-ppl=no --with-isl=no --disable-multilib --enable-fix-cortex-a53-835769 --enable-fix-cortex-a53-843419 --with-arch=armv8-a --enable-threads=posix --enable-multiarch --enable-libstdcxx-time=yes --enable-gnu-indirect-function --with-build-sysroot=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/sysroots/aarch64-linux-gnu --with-sysroot=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu/aarch64-linux-gnu/libc --enable-checking=release --disable-bootstrap --enable-languages=c,c++,fortran,lto --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=aarch64-linux-gnu --prefix=/home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-linux-gnu/_build/builds/destdir/x86_64-unknown-linux-gnu
Thread model: posix
gcc version 6.3.1 20170404 (Linaro GCC 6.3-2017.05)
2.2 檢視配置資訊，選擇firefly-rk3399_defconfig
cd configs
ls | grep 3399
evb-rk3399_defconfig
ficus-rk3399_defconfig
firefly-rk3399_defconfig
khadas-edge-captain-rk3399_defconfig
khadas-edge-rk3399_defconfig
khadas-edge-v-rk3399_defconfig
leez-rk3399_defconfig
nanopc-t4-rk3399_defconfig
nanopi-m4-2gb-rk3399_defconfig
nanopi-m4b-rk3399_defconfig
nanopi-m4-rk3399_defconfig
nanopi-neo4-rk3399_defconfig
nanopi-r4s-rk3399_defconfig
orangepi-rk3399_defconfig
pinebook-pro-rk3399_defconfig
puma-rk3399_defconfig
rock960-rk3399_defconfig
rock-pi-4c-rk3399_defconfig
rock-pi-4-rk3399_defconfig
rock-pi-n10-rk3399pro_defconfig
rockpro64-rk3399_defconfig
roc-pc-mezzanine-rk3399_defconfig
roc-pc-rk3399_defconfig
2.3 使用該配置檔案
cd ../
make firefly-rk3399_defconfig
2.4 開始編譯
make CROSS_COMPILE=aarch64-linux-gnu-
2.5 出錯1.
unable to execute 'swig': No such file or directory
error: command 'swig' failed with exit status 1
2.6 解決錯誤1
sudo apt install swig
2.7 錯誤2
scripts/dtc/pylibfdt/libfdt_wrap.c:149:11: fatal error: Python.h: No such file or directory
# include <Python.h>
^~~~~~~~~~
2.8 解決錯誤2
sudo apt-get install python3-distutils -y
sudo apt install python3-dev -y
2.9 繼續編譯，編譯完成
make CROSS_COMPILE=aarch64-linux-gnu-
./"arch/arm/mach-rockchip/make_fit_atf.py" \
arch/arm/dts/rk3399-firefly.dtb > u-boot.its
WARNING: BL31 file bl31.elf NOT found, resulting binary is non-functional
WARNING: Please read Building section in doc/README.rockchip
MKIMAGE u-boot.itb
===================== WARNING ======================
This board uses CONFIG_SPL_FIT_GENERATOR. Please migrate
to binman instead, to avoid the proliferation of
arch-specific scripts with no tests.
====================================================
CFGCHK u-boot.cfg
OFCHK .config
BINMAN all
2.10 繼續下載下傳bl31.elf
編譯完成後列印了一個警告，意思是說沒找到bl31.elf
檔案
cd ../ (到uboot外面去)
git clone [email protected]:ARM-software/arm-trusted-firmware.git
2.11 編譯atf
cd arm-trusted-firmware
make realclean
make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3399
2.12 出現錯誤
make[1]: arm-none-eabi-gcc: Command not found
2.13 解決錯誤
沒有指令了，安裝就好
sudo apt-get install gcc-arm-none-eabi
2.14 繼續，就成功了
make CROSS_COMPILE=aarch64-linux-gnu- PLAT=rk3399
2.15 回到uboot目錄，重新編譯uboot
cd ../u-boot/
export BL31=/home/zhi/3399/system/2022-11-27/arm-trusted-firmware/build/rk3399/release/bl31/bl31.elf
make CROSS_COMPILE=aarch64-linux-gnu-
沒有警告了！！！！
./"arch/arm/mach-rockchip/make_fit_atf.py" \
arch/arm/dts/rk3399-firefly.dtb > u-boot.its
MKIMAGE u-boot.itb
BINMAN all
三、燒錄到開發闆
3.1 燒錄有很多方法，比如tf卡，我這裡直接使用usb的工具吧。
需要用到兩個檔案，我把它們拷貝到windows共享目錄中
cp idbloader.img /mnt/hgfs/vm_share/rk3399/
cp u-boot.itb /mnt/hgfs/vm_share/rk3399/
3.2 準備下載下傳，打開AndroidTool_Release_v2.71
3.3 開發闆連接配接usb的type c接口，重新啟動進入loader模式，重新開機的時候按住recovery按鍵（或者在uboot階段使用 reboot loader指令，或者linux系統中使用reboot loader指令都是可以進入到loader模式的。）
3.4 準備下載下傳
3.5 執行，開發闆重新開機，成功
四、總結
4.1 以上步驟隻是記錄我移植的過程，中間的原理沒有關注，隻能是說移植的步驟基本完成，但是實際每個人每個虛拟機遇到的問題應該會有差異，建議百度解決。
4.2 基本還算是比較順利，花時2小時左右吧.
4.3 有什麼問題也歡迎私信我讨論，但是我本人技術也很渣啦，不一定能幫大家解決。