L4T 32.3.1

Author: jetsonhacks

README.md

@@ -1,11 +1,11 @@
 # buildKernelAndModules
 Build the Linux Kernel and Modules on board the NVIDIA Jetson Nano Developer Kit
 
-These scripts are for JetPack 4.3, L4T 32.2.3
+These scripts are for JetPack 4.3, L4T 32.3.1
 
 Scripts to help build the 4.9.140 kernel and modules onboard the Jetson Nano Developer Kit Previous versions may be available in releases.
 
-<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 32.2.1. This kernel compiled using this source tree may not work with newer versions or older versions of L4T</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 may not work with newer versions or older versions of L4T</em>
 
 As of this writing, the "official" way to build the Jetson Nano 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 Nano, and then compile the kernel and selected modules. The newly compiled kernel can then be installed. We recommend a SD card size of 32GB, 64GB preferred.
 
@@ -61,9 +61,14 @@ so you can go back and catch errors.
 The intended use of this repository is to help automate building known configurations of the kernel and build modules. You should use the kernel-4.9/scripts/config script to set the kernel configuration that you desire. See the 'rootOnUSB' repository on the JetsonHacksNano Github account for an example.
 
 ### Release Notes
+<b>December, 2019</b>
+* vL4T32.3.1
+* L4T 32.3.1 (JetPack 4.3)
+* Minor version update
+
 <b>November, 2019</b>
 * vL4T32.2.3
-* L4T 32.2.3 (JetPack 4.3)
+* L4T 32.2.3 (JetPack 4.2.2)
 * Minor version update
 
 <b>October, 2019</b>

getKernelSources.sh

@@ -4,7 +4,7 @@
 # MIT License
 
 JETSON_MODEL="NVIDIA Jetson Nano Developer Kit"
-L4T_TARGET="32.2.1"
+L4T_TARGET="32.3.1"
 SOURCE_TARGET="/usr/src"
 KERNEL_RELEASE="4.9"
 
@@ -17,12 +17,14 @@ 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\""

scripts/getKernelSources.sh

@@ -15,20 +15,20 @@ fi
 cd "$SOURCE_TARGET"
 echo "$PWD"
 
-wget -N https://developer.nvidia.com/embedded/dlc/r32-2-1_Release_v1.0/Nano-TX1/sources/public_sources.tbz2
+wget -N https://developer.nvidia.com/embedded/dlc/r32-3-1_Release_v1.0/Sources/T210/public_sources.tbz2
 # l4t-sources is a tbz2 file
-tar -xvf public_sources.tbz2 public_sources/kernel_src.tbz2
-tar -xvf public_sources/kernel_src.tbz2
+tar -xvf public_sources.tbz2  Linux_for_Tegra/source/public/kernel_src.tbz2 --strip-components=3
+tar -xvf kernel_src.tbz2
 # Space is tight; get rid of the compressed kernel source
-rm -r public_sources
+rm -r kernel_src.tbz2
 cd kernel/kernel-4.9
 # Go get the default config file; this becomes the new system configuration
 zcat /proc/config.gz > .config
 # Make a backup of the original configuration
 cp .config config.orig
 # Default to the current local version
 KERNEL_VERSION=$(uname -r)
-# For L4T 32.2 the kernel is 4.9.140-tegra ; 
+# For L4T 32.3 the kernel is 4.9.140-tegra ; 
 # Everything after '4.9.140' is the local version
 # This removes the suffix
 LOCAL_VERSION=${KERNEL_VERSION#$"4.9.140"}