Flash Kernel

To flash your kernel you just need to copy it to /boot in your filesystem. The old method to flash it in the LNX partition (./flash.sh -k LNX <target_board> mmcblk1p1) is no longer used. If you wish to recompile the kernel you can check this page.

eMMC

1) Access the device using ssh. This is necesary since you will need root permissions to copy to the /boot directory

TEGRA_IP=10.251.101.214 #Find this address in your network 
ssh nvidia@$TEGRA_IP

2) Use scp to copy the kernel image

MY_IPADDRESS=10.251.101.43 #Find this address in your network
TEGRA_KERNEL_OUT=${HOME}/kernel-build #Change this to the location on the host

sudo scp $MY_IPADDRESS:$TEGRA_KERNEL_OUT/arch/arm64/boot/Image /boot  #Your source image might be in another location

USB Card

1) Insert your USB flash/drive in your PC and check where it was mounted:

$ mount
/dev/sdb1 on /media/$USER/EF02-5626 type vfat (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush,uhelper=udisks2)

2) Mount and copy the kernel image

DEVDIR=/home/$USER/devdirs/
mkdir $DEVDIR/images/fs
sudo mount /dev/sdb1 $DEVDIR/images/fs 
sudo cp $TEGRA_KERNEL_OUT/arch/arm64/boot/Image $DEVDIR/images/fs/boot/ #Your source image might be in another location

SD Card

This process is similar to the USB flashing

1) Insert your USB flash/drive in your PC and check where it was mounted:

$ mount
/dev/mmcblk1p1 on /media/$USER/EF02-5626 type vfat (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush,uhelper=udisks2)

2) Mount and copy the kernel image

DEVDIR=/home/$USER/devdirs/
mkdir $DEVDIR/images/fs
sudo mount /dev/mmcblk1p1 $DEVDIR/images/fs 
sudo cp $TEGRA_KERNEL_OUT/arch/arm64/boot/Image $DEVDIR/images/fs/boot/ #Your source image might be in another location

NFS

If you followed the guide here, the NFS /boot directory will be located in:

JETPACK_DIR=/home/$USER/JetPack/
sudo cp $TEGRA_KERNEL_OUT/arch/arm64/boot/Image $JETPACK_DIR/Xavier/Linux_for_Tegra/rootfs/boot/ #Your source image might be in another location

Rebuilding DTB

To modify the DTS and rebuild the DTB

1. Locate the cbo.dts file in this directory:

JETPACK_DIR=/home/$USER/JetPack/
cd $JETPACK_DIR/Xavier/Linux_for_Tegra/bootloader/

2. Modify the file as necessary

3. Enter this command to convert the DTS to a DTB:

$JETPACK_DIR/Xavier/Linux_for_Tegra/kernel/dtc -I dts -O dtb -o cbo.dtb cbo.dts

4. Flash the partition CPUBL-CFG.This asumes that a filesystem already exists in the desired location, if not follow the instructions here

eMMC

cd ..
sudo ./flash.sh -k CPUBL-CFG jetson-xavier mmcblk0p1

USB

cd ..
sudo ./flash.sh -k CPUBL-CFG jetson-xavier sdb1 #it can be other mount point

SD Card

cd ..
sudo ./flash.sh -k CPUBL-CFG jetson-xavier mmcblk1p1 #it can be other mount point

NFC

cd ..
sudo ./flash.sh -N $MY_IPADDRESS:$JETPACK_DIR/Xavier/Linux_for_Tegra/rootfs --rcm-boot -k CPUBL-CFG jetson-xavier eth0 #it can be other mount point

[[Xavier/<Replace with "previous" page>|Previous: <Replace with "previous" page>]]

Index

[[Xavier/<Replace with "next" page>|Next: <Replace with "next" page>]]