Compile U-Boot; Compile The Linux Kernel - Cherry JAGUAR SBC-RK3588-AMR User Manual

# Tag linux-5.10-gen-rkr4.1
git checkout "1356c978"
export RKBIN_FOLDER=$PWD
export BL31=$RKBIN_FOLDER/bin/rk35/rk3588_bl31_v1.38.elf
export BL32=$RKBIN_FOLDER/bin/rk35/rk3588_bl32_v1.13.bin
export TPL=$RKBIN_FOLDER/bin/rk35/rk3588_ddr_lp4_2112MHz_lp5_2736MHz_v1.11.bin
cd ..
# Make the baudrate match our U-Boot
sed -i 's/uart baudrate=/uart baudrate=115200/'
rkbin/tools/ddrbin_tool rkbin/tools/ddrbin_param.txt
This step should take under 1 minute total.

5.3 Compile U-Boot

Note: Variables BL31, BL32, TPL must be already set as described in Section 5.2 Get the ATF .
Get the source code and compile the U-Boot bootloader as follows:
# Set up cross-compilation
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
# Download the source code
git clone https://git.embedded.cherry.de/jaguar-u-boot.git
cd jaguar-u-boot
# Load u-boot config
make jaguar-rk3588_defconfig
# Build idbloader.img
make spl/u-boot-spl.bin
./tools/mkimage -n rk3588 -T rksd -d "$TPL":spl/u-boot-spl.bin idbloader.img
# Build u-boot.dtb/u-boot.itb
cp "$BL31" bl31.elf
cp "$BL32" tee.bin
make u-boot.dtb u-boot.itb
# Make the resulting file available to later steps
export JAGUAR_UBOOT_DIR=$PWD
cd ..
This step should take about 1 minute total.

5.4 Compile the Linux kernel

Get the source code and compile the Linux kernel as follows:
# Set up cross-compilation
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
# Download the source code
git clone https://git.embedded.cherry.de/jaguar-linux.git
cd jaguar-linux
v1.0.1
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-j$(nproc)
-j$(nproc)
rkbin/tools/ddrbin_param.txt
"$TPL"
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