rpi3 and rpi4 native build

Build rpi4 in native

$ uname -r
6.1.21-v8+
mkdir rpi61_src/
git clone  --depth=1 --branch rpi-6.1.y <https://github.com/raspberrypi/linux>
(不能光sudo apt install raspberrypi-kernel-headers 在/usr/src下编译，会出错）
cd linux
>KERNEL=kernel8
1）>make bcm2711_defconfig 
	make -j4 Image.gz modules dtbs
	
sudo make modules_install
(自动安装在/lib/modules，小心覆盖，这里我的为/lib/modules/6.1.53-v8+/，不会覆盖6.1.21-v8+)
	
 
覆盖，升级
	sudo cp arch/arm64/boot/dts/broadcom/*.dtb /boot/
	sudo cp arch/arm64/boot/dts/overlays/*.dtb* /boot/overlays/
	sudo cp arch/arm64/boot/dts/overlays/README /boot/overlays/
	sudo cp arch/arm64/boot/Image.gz /boot/$KERNEL.img
 
修改安装目录：
make ARCH=arm64 INSTALL_MOD_PATH=../ modules_install

Build rpi3 in native

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apt install git bc bison flex libssl-dev make libc6-dev libncurses5-dev
 
git clone --depth=1 --branch rpi-5.9.y https://github.com/raspberrypi/linux
 
git clone git://github.com/raspberrypi/tools.git
 
/home/pi/myrasp/linux>make bcm2709_defconfig（3B） (bcmrpi_defconfig 为早期版）
 
/home/pi/myrasp/linux>make -j4 &
 
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KERNEL=kernel7
make -j4 zImage modules dtbs
sudo make modules_install
(自动安装在/lib/modules，小心覆盖)
 
sudo cp arch/arm/boot/dts/*.dtb /boot/
sudo cp arch/arm/boot/dts/overlays/*.dtb* /boot/overlays/
sudo cp arch/arm/boot/dts/overlays/README /boot/overlays/
sudo cp arch/arm/boot/zImage /boot/$KERNEL.img