tegra.md

tegra tips

• Jetson TX1 & TX2 & Xavier

  • Jetson Easy: easy installer for NVidia Jetson

    • Jetson Easy setup configurator
    • Basic scripts and function to improve the performance in your NVIDIA Jetson

  • Some Jetson Web Links

  • machine arch files for Jetson TX1 (Quad-core ARMCortex-A57 MPCore Processor)

  • Yocto layer for the NVidia Tegra Jetson TK1 board

  • TX1 Yocto layer?

  • Manifests to create an Arch Linux ARM rootfs augmented with Nouveau and the OSS graphics stack for NVIDIA's Jetson TK1/TX1 boards

  • tegra-uboot-flasher-scripts

  • tegra-scripts

  • nvidia-persistenced

  • tegra-uboot-scripts

  • tegra-uboot-flasher-scripts

  • tegra-uboot-flasher-manifests

    • Flashing with tegrarcm
    • Flash nvidia jetson tx1

    git clone -b krogoth git://git.yoctoproject.org/poky.git 
    cd poky
    git clone https://github.com/madisongh/meta-tegra
    . oe-init-build-env build_jetson
    cd build_jetson/conf/
    ...

  • Jetson/Porting Arch

  • SPI - Serial Peripheral Interface

    • Using the Jetson TK1 SPI - Part 1 (Why is SPI important)
    • Using the Jetson TK1 SPI - Part 3 (Configuring SPI in the device tree)

  • Das U-Boot

    • git for Das U-Boot
    • U-Boot tegra
    • Linux for Tegra
    • TX1: how to recover CUDA and Nvidia/X11 drivers…
    • tegra downloads
    • TX1/R23.1: New Flash Structure...How to Clone?
    • Updating TX1 driver package but not rootfs
    • cross compile U-Boot

    export CROSS_COMPILE=/opt/linaro/gcc-linaro-5.3-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
    export ARCH=arm64
    make distclean
    make p2371-2180_defconfig
    make

    • Jetson/Cloning
      • tegrarcm

      sudo python2 ./tegraflash.py --bl cboot.bin --applet nvtboot_recovery.bin --chip 0x21 --cmd "read APP my_backup_image_APP.img"
      Welcome to Tegra Flash
      version 1.0.0
      Type ? or help for help and q or quit to exit
      Use ! to execute system commands
       
      [   0.0011 ] Generating RCM messages
      Error: Could not find tegrarcm
      file ./tegrarcm
      ./tegrarcm: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), statically linked, for GNU/Linux 2.6.8, not stripped
      

      • Jetpack output when flashing Tegra X1
      • NVIDIA/cbootimage
      • org:NVIDIA tegra
      • Flashing Jetson TX1 with tegraflash.py
      • nVidia Jetson TX1 Installation Guide
      • l4t_prebuilt_image
      • NVIDIA TEGRA LINUX DRIVER PACKAGE QUICK-START GUIDE
      • flash.sh
        • NVIDIA Jetson TX1
        • NVIDIA TEGRA LINUX DRIVER PACKAGE QUICK-START GUIDE
        • jetsonhacks/Install LT4 21.1.md

• ARM cross compile

  • Problems with linking arm objects : resolution
    • Problems with linking arm objects

    /usr/lib/gcc/arm-none-eabi/4.9.1/../../../../arm-none-eabi/lib/libc.a(lib_a-exit.o): In function `exit':
    /build/arm-none-eabi-gcc/src/gcc-4.9.1/build/arm-none-eabi/newlib/libc/stdlib/../../../../../newlib/libc/stdlib/exit.c:70: undefined reference to `_exit'
    /usr/lib/gcc/arm-none-eabi/4.9.1/../../../../arm-none-eabi/lib/libc.a(lib_a-sbrkr.o): In function `_sbrk_r':
    ...

  arm-none-eabi-gcc hi.c -lc -specs=nosys.specs -o hi

  export ARCH=arm64
  export CROSS_COMPILE=/usr/bin/arm-none-eabi-
  export CROSS_COMPILE=/opt/armgcc/bin/
  

• Jetson TX1

  • Tegra210 nvtboot-Based Boot Flow
  • Tegra Boot Flow
  • Built TX1 u-boot from source

• Das U-Boot programming

  • Banana Pi: через U-Boot к Arch Linux
  • U-Boot programming: A tutorial -- Part I
  • U-Boot programming: A tutorial -- Part II
  • U-Boot programming: A tutorial -- Part III
  • Tegra/Mainline SW/U-Boot
  • extlinux.conf

  TIMEOUT 100
  DEFAULT default
  MENU TITLE Boot menu
  
  LABEL default
      MENU LABEL Linux 3.18.8-rt2+ with Overlay
      LINUX vmlinuz-3.18.8-rt2+
      FDTDIR .
      APPEND dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 smsc95xx.macaddr=${usbethaddr} root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait ro init=/sbin/init-overlay
  
  LABEL aufs
      MENU LABEL Linux 3.18.8-rt2+ with Aufs
      LINUX vmlinuz-3.18.8-rt2+
      FDTDIR .
      APPEND dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 smsc95xx.macaddr=${usbethaddr} root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait ro OVERLAY=aufs init=/sbin/init-overlay
  
  LABEL rw
      MENU LABEL Linux 3.18.8-rt2+ RW root
      LINUX vmlinuz-3.18.8-rt2+
      FDTDIR .
      APPEND dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 smsc95xx.macaddr=${usbethaddr} root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait ro
  
  LABEL nfs-busybox
      MENU LABEL Linux 3.18.8-rt2+ NFS BusyBox
      LINUX vmlinuz-3.18.8-rt2+
      FDTDIR .
      APPEND dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 smsc95xx.macaddr=${usbethaddr} root=/dev/nfs rw nfsroot=192.168.1.10:/srv/nfs/rpi ip=192.168.1.33:::::eth0 elevator=deadline rootwait
  ...
  

  • PXELINUX

  gvim u-boot/common/cmd_pxe.c u-boot/common/cmd_ext2.c uboot/fs/fs.c

  static int get_relfile(cmd_tbl_t *cmdtp, const char *file_path,
      unsigned long file_addr)
      ...
      strcat(relfile, file_path);
  
      printf("Retrieving file: %s\n", relfile);
  
      sprintf(addr_buf, "%lx", file_addr);
  
      return do_getfile(cmdtp, relfile, addr_buf);

  • U-Boot scripts

    • Where does U-Boot saveenv to?

  • U-Boot splash screen on Jetson TX1

• PCI & PCIe

  • The PCI Interface & PCI Addressing
  • Considerations for host-to-FPGA PCIe traffic
  • Down to the TLP: How PCI express devices talk (Part I)
  • Down to the TLP: How PCI express devices talk (Part II)
  • gittup.org's pciutils
    • lspci “Memory at…” vs /proc/bus/pci/devices BAR address

• Cross compilation

  • A versatile (cross-)toolchain generator.
  • Cross Compiling Environment Setup For ARM Architecture Pidora OS
  • Building embedded ARM systems with Crosstool-NG
  • Bash: Build Binutils, GCC, Newlib, and GDB for ARM EABI (Cross-compiler).
  • building U-boot
  • Jetson/TX1 Upstream Kernel
  • tegra-uboot-flasher-scripts : README-developer
  • Compiling Tegra X1 source code
  • [meta-fsl-arm,5/5] u-boot: fix build error under gcc6
  • SDL
    • SDL - Simple DirectMedia
    • SDL installation
    • Building embedded ARM systems with Crosstool-NG
    • SDL: How To Build for ARM
    • SDL2: How To Build for ARM
      • dbus-arch-deps.h missing from usr/include/dbus-1.0/dbus
      • symlink for dbus headers
      • TL;DR

      pkg-config dbus-1 --cflags

• Android sparse image format

• Device Tree for dummies

• Docker

  • NVIDIA Docker Container User Guide
  • issue creating containers due to seccomp failure (error adding seccomp filter rule for syscall clone3: permission denied: unknown tl;dr

    sudo dpkg -i docker.io_20.10.2-0ubuntu1_18.04.2_arm64.deb 
    [sudo] password for alsam: 
    dpkg: warning: downgrading docker.io from 20.10.7-0ubuntu5~18.04.3 to 20.10.2-0ubuntu1~18.04.2
    (Reading database ... 214354 files and directories currently installed.)
    Preparing to unpack docker.io_20.10.2-0ubuntu1_18.04.2_arm64.deb ...
    Unpacking docker.io (20.10.2-0ubuntu1~18.04.2) over (20.10.7-0ubuntu5~18.04.3) ...
    Setting up docker.io (20.10.2-0ubuntu1~18.04.2) ...
    Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
    ...
    sudo apt-mark hold docker.io

• misc

  • Unknown command 'jetson_release' (pip command not found) tl;dr

    $ sudo -H pip3 install -U setuptools
    Collecting setuptools
      Downloading https://files.pythonhosted.org/packages/b0/3a/88b210db68e56854d0bcf4b38e165e03be377e13907746f825790f3df5bf/setuptools-59.6.0-py3-none-any.whl (952kB)
        100% |████████████████████████████████| 962kB 768kB/s 
    Installing collected packages: setuptools
    Successfully installed setuptools-59.6.0
    $ sudo -H pip3 install -U jetson-stats
    Collecting jetson-stats

  • Number of CPU cores on Jetson Xavier tl;dr

    sudo nvpmodel -m 2

  • restore screen after removing an inserting HDMI tl;dr

    sudo xrandr -s 1

  • Enhancements of the massively parallel memory allocator ScatterAlloc and its adaption to the general interface mallocMC

  • Network Troubleshooting

    • Jetson/Remote Access
    • tl;dr

    sudo service networking start
    sudo service network-manager start

  • cursor disable in X11

    • cursor disable in X11

    cat /lib/systemd/system/X.service
    ...
    ExecStart=/usr/bin/startx -- -nocursor
    ...
    sudo systemctl daemon-reload
    sudo systemctl restart X

    • red herring - hhpc
    • How to hide the mouse cursor

  • How do I disable my system from going to sleep?

  sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

  • How do I know what version of L4T my Jetson TX1 is running? tl;dr

    cat /etc/nv_tegra_release

  • Bernese GNSS Software

    • Bernese GNSS

  • Low frame rate

  • NVIDIA AI IOT

  • QtCAM is a free, Open Source Linux Webcamera Software with more than 10 image control settings, extension settings and Color space switching

  sudo apt-get install qtmultimedia5-dev libqt5multimediawidgets5 libqt5multimedia5-plugins libqt5multimedia5 qtdeclarative5
  sudo apt-get install libjpeg-turbo8 libjpeg-turbo8-dev libturbojpeg0-dev libevdev-dev

  • Getting started with the Deep Learning Accelerator on NVIDIA Jetson Orin

  • GStreamer

    • Play webcam using gstreamer
      • ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error.
    • How to write a CMAKE file which successfully links gstreamer basic tutorial 5
    • Gstreamer docs

  • DATA PLANE DEVELOPMENT KIT (DPDK)

    • Environment Abstraction Layer