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prerequisites.md

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Build QEMU to emulate 64-bit RISC-V Architecture

cd qemu

git checkout stable-8.2
git submodule init
git submodule update --init --recursive

./configure --target-list=riscv64-softmmu
make -j$(nproc)

# make install  # This will install to /usr

Compile a linux kernel

cd linux 

git checkout v6.7 

make defconfig ARCH=riscv
make -j$(nproc) ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu-

Build a Root File System (with busybox)

cd busybox

git checkout 1_36_stable

make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- defconfig

# make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- CONFIG_PREFIX=/path/to/RFS  install

make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- install

NOTE: RFS is in ./_install without specified CONFIG_PREFIX=/path/to/RFS

Actually, we can also change to other distros.

Make an Image

use mkImage.sh to make an bootable image with the linux kernel and the busybox rootFS.

Boot Process

More details are in these two subdirectories:

  • boot_payload
    • README.md
  • boot_uboot-spl
    • README.md