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Merge pull request #27 from jetsonhacks/L4T32.3.1-dev
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L4T32.3.1 dev
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2 changes: 1 addition & 1 deletion LICENSE
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MIT License

Copyright (c) 2017-19 Jetsonhacks
Copyright (c) 2017-20 Jetsonhacks

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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39 changes: 30 additions & 9 deletions README.md
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# buildJetsonTX2Kernel
Scripts to help build the 4.9.140 kernel and modules onboard the Jetson TX2 (L4T 32.1.0, JetPack 4.2). For previous versions, visit the 'tags' section.
Scripts to help build the 4.9.140 kernel and modules onboard the Jetson TX2 (L4T 32.3.1, JetPack 4.3). For previous versions, visit the 'tags' section.

<em><strong>Note:</strong> The kernel source version must match the version of firmware flashed on the Jetson. For example, the source for the 4.9.140 kernel here is matched with L4T 32.1.0. This kernel compiled using this source tree will not work with newer versions or older versions of L4T, only 32.1.0.</em>
<em><strong>Note:</strong> The kernel source version must match the version of firmware flashed on the Jetson. For example, the source for the 4.9.140 kernel here is matched with L4T 32.3.1. This kernel compiled using this source tree will not work with newer versions or older versions of L4T, only 32.3.1.</em>

<em><strong>Note:</strong> You will probably only use these scripts to build and install modules. Even though there are scripts provided to build and copy the new kernel to the boot directory of the device, there is no effect. In newer versions of L4T, the kernel Image is actually signed and stored in a different partition on disk. The copyImage.sh script is legacy. In order to place the newly created Image, you will need to copy it to the correct place on the host and flash the eMMC. It is probably easier to build it on the host in the first place. The flash process on the host signs the Image, and copies it to the appropriate partition.</em>

As of this writing, the "official" way to build the Jetson TX2 kernel is to use a cross compiler on a Linux PC. This is an alternative which builds the kernel onboard the Jetson itself. These scripts will download the kernel source to the Jetson TX2, and then compile the kernel and selected modules. The newly compiled kernel can then be installed. The kernel sources and build objects consume ~3GB.

These scripts are for building the kernel for the 64-bit L4T 32.1.0 (Ubuntu 18.04 based) operating system on the NVIDIA Jetson TX2. The scripts should be run directly after flashing the Jetson with L4T 32.1.0 from a host PC. There are five scripts:
These scripts are for building the kernel for the 64-bit L4T 32.3.1 (Ubuntu 18.04 based) operating system on the NVIDIA Jetson TX2. The scripts should be run directly after flashing the Jetson with L4T 32.3.1 from a host PC. There are six scripts:

<strong>getKernelSources.sh</strong>

Downloads the kernel sources for L4T from the NVIDIA website, decompresses them and opens a graphical editor on the .config file.
Downloads the kernel sources for L4T from the NVIDIA website, decompresses them and opens a graphical editor on the .config file. Note that this also sets the .config file to the current system, and also sets the local version to the current local version, i.e., -tegra

<strong>getKernelSourcesNoGUI.sh</strong>
<strong>makeKernel.sh</strong>

Downloads the kernel sources for L4T from the NVIDIA website and decompresses them. This is useful when working through SSH, have a preference to edit the .config through a text editor or some other manner (e.g. nconfig), or have a predefined .config file you would like to substitute.
Compiles the kernel using make. The script commands make the kernel Image file. Installing the Image file on to the system is a separate step. Note that the make is limited to the Image and modules.

The other parts of the kernel build, such as building the device tree, require that the result be 'signed' and flashed from the the NVIDIA tools on a host PC.

<strong>makeKernel.sh</strong>
<strong>makeModules.sh</strong>

Compiles the kernel and modules using make. The script commands make the kernel Image file, makes the module files, and installs the module files. Installing the Image file on to the system is a separate step. Note that the make is limited to the Image and modules; the rest of the kernel build (such as compiling the dts files) must be done separately. Doing "sudo make" in the kernel source directory will build the entirety.
Compiles the modules using make and then installs them.

<strong>copyImage.sh</strong>

Copies the Image file created by compiling the kernel to the /boot directory. Note that while developing you will want to be more conservative than this: You will probably want to copy the new kernel Image to a different name in the boot directory, and modify /boot/extlinux/extlinux.conf to have entry points at the old image, or the new image. This way, if things go sideways you can still boot the machine using the serial console.

You will want to make a copy of the original Image before the copy, something like:

```
$ cp /boot/Image $INSTALL_DIR/Image.orig
$ ./copyImage.sh
$ echo "New Image created and placed in /boot"
```

<strong>editConfig.sh</strong>

Edit the .config file located in /usr/src/kernel/kernel-4.9 This file must be present (from the getKernelSources.sh script) before launching the file. Note that if you change the local version, you will need to make both the kernel and modules and install them.

<strong>removeAllKernelSources.sh</strong>

Removes all of the kernel sources and compressed source files. You may want to make a backup of the files before deletion.


Expand All @@ -39,6 +55,11 @@ Special thanks to Shreeyak (https://github.com/Shreeyak) for discussing alternat
Special thanks to Alexander Rashed (@alexrashed on Github) for vL4T32.1.0 release

### Release Notes

January, 2020
* vL4T32.3.1
* L4T 32.3.1 (JetPack 4.3)

May, 2019
* vL4T32.1.0
* L4T 32.1.0 (JetPack 4.2)
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## License
MIT License

Copyright (c) 2017-2018 Jetsonhacks
Copyright (c) 2017-2020 Jetsonhacks
Portions Copyright (c) 2015-2018 Raffaello Bonghi (jetson_easy)

Permission is hereby granted, free of charge, to any person obtaining a copy
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50 changes: 50 additions & 0 deletions editConfig.sh
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#!/bin/bash
# Edit the kernel configuration for NVIDIA Jetson TX2 Development Kit
# Copyright (c) 2016-20 Jetsonhacks
# MIT License

SOURCE_TARGET="/usr/src"
KERNEL_RELEASE="4.9"

function usage
{
echo "usage: ./editConfig.sh [[-d directory ] | [-h]]"
echo "-d | --directory Directory path to parent of kernel"
echo "-h | --help This message"
}

# Iterate through command line inputs
while [ "$1" != "" ]; do
case $1 in
-d | --directory ) shift
SOURCE_TARGET=$1
;;
-h | --help ) usage
exit
;;
* ) usage
exit 1
esac
shift
done

LAST="${SOURCE_TARGET: -1}"
if [ $LAST != '/' ] ; then
SOURCE_TARGET="$SOURCE_TARGET""/"
fi

# Check to see if source tree is already installed
PROPOSED_SRC_PATH="$SOURCE_TARGET""kernel/kernel-"$KERNEL_RELEASE
echo "Proposed source path: ""$PROPOSED_SRC_PATH"
if [ ! -d "$PROPOSED_SRC_PATH" ]; then
tput setaf 1
echo "==== Cannot find kernel source! =============== "
tput sgr0
echo "The kernel source does not appear to be installed at: "
echo " ""$PROPOSED_SRC_PATH"
echo "Unable to edit kernel configuration."
exit 1
fi

cd "$PROPOSED_SRC_PATH"
sudo make menuconfig
156 changes: 135 additions & 21 deletions getKernelSources.sh
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#!/bin/bash
# Install the kernel source for L4T
source scripts/jetson_variables.sh
#Print Jetson version
echo "$JETSON_DESCRIPTION"
#Print Jetpack version
echo "Jetpack $JETSON_JETPACK [L4T $JETSON_L4T]"
# Get the kernel source for NVIDIA Jetson Nano Developer Kit, L4T
# Copyright (c) 2016-2020 Jetsonhacks
# MIT License

JETSON_MODEL="TX2"
L4T_TARGET="32.3.1"
SOURCE_TARGET="/usr/src"
KERNEL_RELEASE="4.9"

#Get the Board Model
JETSON_BOARD="UNKNOWN"

if [ -f /sys/module/tegra_fuse/parameters/tegra_chip_id ]; then
JETSON_BOARD=$(case $(cat /sys/module/tegra_fuse/parameters/tegra_chip_id) in
64)
echo TK1 ;;
33)
echo Nano/TX1 ;;
24)
echo TX2 ;;
25)
echo AGX Xavier ;;
esac)
JETSON_DESCRIPTION="NVIDIA Jetson $JETSON_BOARD"
fi
echo "Jetson Model: "$JETSON_BOARD

JETSON_L4T=""

# Starting with L4T 32.2, the recommended way to find the L4T Release Number
# is to use dpkg
# L4T 32.3.1, NVIDIA added back /etc/nv_tegra_release
function check_L4T_version()
{
if [ -f /etc/nv_tegra_release ]; then
JETSON_L4T_STRING=$(head -n 1 /etc/nv_tegra_release)
JETSON_L4T_RELEASE=$(echo $JETSON_L4T_STRING | cut -f 2 -d ' ' | grep -Po '(?<=R)[^;]+')
JETSON_L4T_REVISION=$(echo $JETSON_L4T_STRING | cut -f 2 -d ',' | grep -Po '(?<=REVISION: )[^;]+')
JETSON_L4T_VERSION=$JETSON_L4T_RELEASE.$JETSON_L4T_REVISION

else
echo "$LOG Reading L4T version from \"dpkg-query --show nvidia-l4t-core\""

JETSON_L4T_STRING=$(dpkg-query --showformat='${Version}' --show nvidia-l4t-core)
# For example: 32.2.1-20190812212815
JETSON_L4T_VERSION=$(echo $JETSON_L4T_STRING | cut -d '-' -f 1)
JETSON_L4T_RELEASE=$(echo $JETSON_L4T_VERSION | cut -d '.' -f 1)
# # operator remove prefix in string operations in bash script. Don't forget . eg "32."
JETSON_L4T_REVISION=${JETSON_L4T_VERSION#$JETSON_L4T_RELEASE.}
fi
echo "$LOG Jetson BSP Version: L4T R$JETSON_L4T_VERSION"

}

echo "Getting L4T Version"
check_L4T_version
JETSON_L4T="$JETSON_L4T_VERSION"

function usage
{
echo "usage: ./getKernelSources.sh [[-d directory ] | [-h]]"
echo "-h | --help This message"
}

# Iterate through command line inputs
while [ "$1" != "" ]; do
case $1 in
-d | --directory ) shift
SOURCE_TARGET=$1
;;
-h | --help ) usage
exit
;;
* ) usage
exit 1
esac
shift
done

red=`tput setaf 1`
green=`tput setaf 2`
reset=`tput sgr0`
# e.g. echo "${red}The red tail hawk ${green}loves the green grass${reset}"

LAST="${SOURCE_TARGET: -1}"
if [ $LAST != '/' ] ; then
SOURCE_TARGET="$SOURCE_TARGET""/"
fi

INSTALL_DIR=$PWD

# Error out if something goes wrong
set -e

# Check to make sure we're installing the correct kernel sources
L4TTarget="32.1.0"
if [ $JETSON_L4T == $L4TTarget ] ; then
echo "Getting kernel sources"
sudo ./scripts/getKernelSources.sh
else
# Determine the correct kernel version
# The KERNEL_BUILD_VERSION is the release tag for the JetsonHacks buildKernel repository
KERNEL_BUILD_VERSION=master
if [ "$JETSON_BOARD" == "$JETSON_MODEL" ] ; then
if [ $JETSON_L4T == "$L4T_TARGET" ] ; then
KERNEL_BUILD_VERSION=$L4T_TARGET
else
echo ""
tput setaf 1
echo "==== L4T Kernel Version Mismatch! ============="
tput sgr0
echo ""
echo "This repository branch is for installing the kernel sources for L4T "$L4TTarget
echo "You are attempting to use these kernel sources on a L4T "$JETSON_L4T "system."
echo "The kernel sources do not match their L4T release!"
echo "This repository is for modifying the kernel for a L4T "$L4T_TARGET "system."
echo "You are attempting to modify a L4T "$JETSON_MODEL "system with L4T "$JETSON_L4T
echo "The L4T releases must match!"
echo ""
echo "Please git checkout the appropriate kernel sources for your release"
echo " "
echo "You can list the tagged versions."
echo "$ git tag -l"
echo "And then checkout the latest version: "
echo "For example"
echo "$ git checkout v1.0-L4T"$JETSON_L4T
echo "There may be versions in the tag/release sections that meet your needs"
echo ""
exit 1
fi
else
tput setaf 1
echo "==== Jetson Board Mismatch! ============="
tput sgr0
echo "Currently this script works for the $JETSON_MODEL."
echo "This processor appears to be a $JETSON_BOARD, which does not have a corresponding script"
echo ""
echo "Exiting"
exit 1
fi

# Check to see if source tree is already installed
PROPOSED_SRC_PATH="$SOURCE_TARGET""kernel/kernel-"$KERNEL_RELEASE
echo "Proposed source path: ""$PROPOSED_SRC_PATH"
if [ -d "$PROPOSED_SRC_PATH" ]; then
tput setaf 1
echo "==== Kernel source appears to already be installed! =============== "
tput sgr0
echo "The kernel source appears to already be installed at: "
echo " ""$PROPOSED_SRC_PATH"
echo "If you want to reinstall the source files, first remove the directories: "
echo " ""$SOURCE_TARGET""kernel"
echo " ""$SOURCE_TARGET""hardware"
echo "then rerun this script"
exit 1
fi

export SOURCE_TARGET
# -E preserves environment variables
sudo -E ./scripts/getKernelSources.sh


33 changes: 0 additions & 33 deletions getKernelSourcesNoGUI.sh

This file was deleted.

50 changes: 49 additions & 1 deletion makeKernel.sh
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#!/bin/bash
sudo ./scripts/makeKernel.sh
# Make the kernel for NVIDIA Jetson TX2 Developer Kit
# Copyright (c) 2016-20 Jetsonhacks
# MIT License

SOURCE_TARGET="/usr/src"
KERNEL_RELEASE="4.9"

function usage
{
echo "usage: ./makeKernel.sh [[-d directory ] | [-h]]"
echo "-d | --directory Directory path to parent of kernel"
echo "-h | --help This message"
}

# Iterate through command line inputs
while [ "$1" != "" ]; do
case $1 in
-d | --directory ) shift
SOURCE_TARGET=$1
;;
-h | --help ) usage
exit
;;
* ) usage
exit 1
esac
shift
done

LAST="${SOURCE_TARGET: -1}"
if [ $LAST != '/' ] ; then
SOURCE_TARGET="$SOURCE_TARGET""/"
fi

# Check to see if source tree is already installed
PROPOSED_SRC_PATH="$SOURCE_TARGET""kernel/kernel-"$KERNEL_RELEASE
echo "Proposed source path: ""$PROPOSED_SRC_PATH"
if [ ! -d "$PROPOSED_SRC_PATH" ]; then
tput setaf 1
echo "==== Cannot find kernel source! =============== "
tput sgr0
echo "The kernel source does not appear to be installed at: "
echo " ""$PROPOSED_SRC_PATH"
echo "Unable to start making kernel."
exit 1
fi

export SOURCE_TARGET
# E Option carries over environment variables
sudo -E ./scripts/makeKernel.sh
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