目的：想用自己编译出的内核放到开发板上去跑起来
1 AGX开发板烧录jetpack4.6
2将public_sources.tbz2 源码下载后编译出kernel，生成Image
3 备份AGX开发板上的Image， sudo cp /boot/Image /boot/Image.backup
3 将此Image 拷贝到 AGX开发板上 /boot/Image
4 修改AGX上 /boot/extlinux/exlinux.conf 文件
ubuntu@ubuntu-desktopd:/boot$ cat extlinux/extlinux.conf
TIMEOUT 30
DEFAULT primary
MENU TITLE L4T boot options
LABEL primary
MENU LABEL primary kernel
LINUX /boot/Image
INITRD /boot/initrd
APPEND ${cbootargs} quiet root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyTCU0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 rootfstype=ext4
FDT /boot/tegra194-p2888-0001-p2822-0000.dtb
When testing a custom kernel, it is recommended that you create a backup of
the original kernel and add a new entry to this file so that the device can
fallback to the original kernel. To do this:
1, Make a backup of the original kernel
sudo cp /boot/Image /boot/Image.backup
2, Copy your custom kernel into /boot/Image
3, Uncomment below menu setting lines for the original kernel
4, Reboot
LABEL backup
MENU LABEL backup kernel
LINUX /boot/Image.backup
INITRD /boot/initrd
APPEND ${cbootargs} quiet root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyTCU0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0 rootfstype=ext4
FDT /boot/tegra194-p2888-0001-p2822-0000.dtb
5 开机通过串口选择用哪个Image 启动,现象为用自己下载的源码编译出的Image不能启动图像化界面，HDMI端会显示3 failed
failed to start Load Kernel Modules
failed to start nvpmodel service
failed to start Docker Application Container Engine.