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0029_Linux_Kernel_Compile.md

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0029_Linux_Kernel_Compile.md

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Linux Kernel Compile

参考文档

Source code

https://github.com/raspberrypi/linux

steps

  • sudo apt-get install git bc bison flex libssl-dev
  • download kernel source code and cd to kernel root path
  • KERNEL=kernel7l
  • make bcm2711_defconfig
  • make -j4 zImage modules dtbs
    • config dir: arch/arm64/configs/bcm2711_defconfig
    • overlay dir: arch/arm/boot/dts/overlays
    • dts dir: arch/arm64/boot/dts/broadcom/bcm2711-rpi-4-b.dts
    • function map：System.map
  • sudo make modules_install 
    INSTALL arch/arm/crypto/aes-arm-bs.ko
INSTALL arch/arm/crypto/aes-arm.ko
INSTALL arch/arm/crypto/sha1-arm-neon.ko
INSTALL arch/arm/crypto/sha1-arm.ko
[...省略]
INSTALL sound/usb/6fire/snd-usb-6fire.ko
INSTALL sound/usb/caiaq/snd-usb-caiaq.ko
INSTALL sound/usb/hiface/snd-usb-hiface.ko
INSTALL sound/usb/misc/snd-ua101.ko
INSTALL sound/usb/snd-usb-audio.ko
INSTALL sound/usb/snd-usbmidi-lib.ko
DEPMOD  4.19.71-v7l
  • ls /lib/modules/ 
    4.19.57+  4.19.57-v7+  4.19.57-v7l+  4.19.71-v7l  4.9.0-6-rpi
  • 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
  • sudo sync
  • sudo reboot
  • uname -a 
    Linux raspberrypi 4.19.71-v7l #1 SMP Mon Sep 9 12:24:09 BST 2019 armv7l GNU/Linux

menuconfig

make ARCH=arm64 CROSS_COMPILE=arm-linux-gnueabihf- menuconfig

Check version

  • Current system version 
    pi@raspberrypi:~/zengjf $ uname -a
Linux raspberrypi 4.19.57-v7l+ #1244 SMP Thu Jul 4 18:48:07 BST 2019 armv7l GNU/Linux
  • head Makefile 
    # SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 19
SUBLEVEL = 71
EXTRAVERSION =
NAME = "People's Front"

# *DOCUMENTATION*
# To see a list of typical targets execute "make help"
# More info can be located in ./README
  • 如上可知，由于重新编译的内核和系统本身的内核版本有差异，所以不能仅仅替换内核，这样会导致内核驱动模块加载失败，需要将内核相关文件全部进行替换： 
    make -j4 zImage modules dtbs
sudo make modules_install
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