Getting started with TI Jacinto 7 Edge AI/Introduction/NFS bootup
NFS bootup
Requirements
- TI Jacinto 7 board connected via USB and Ethernet to the PC
- DHCP configured to share network on the Ethernet interface
- Connected SD card with a Jacinto 7 image (or at least the boot partition with the Bootloader)
Dependencies to meet
$ sudo apt install nfs-kernel-server $ sudo apt install xinetd
Setups
Find the USB port device
The USB device can be found this way:
# Plug in and plug out the USB cable $ watch ls /dev/tty* /dev/ttyUSB0
Find the the server IP (the IP of your computer)
The computer IP could be find out with this command, at the first IP:
$ hostname -I
Set the TFTP server directory
$ vi /etc/default/tftpd-hpa # [Update this variable] # TFTP_DIRECTORY="/tftpboot"
Configure the Ethernet interface
Make sure it is sharing Internet. It will allow the DHCP to assign and IP the FTP server to establish the files transfers.
$ nm-connection-editor

The script execution
$ sudo ./setup.sh
Proceed with the SDK setup script and reach out to the point the script stands for the Minicom (serial communication application) setup for SDK development.
The script execution would look like the following:
# Which serial port do you want to use with minicom? $ [ /dev/ttyS0 ] /dev/ttyUSB0 -------------------------------------------------------------------------------- This step will set up the u-boot variables for booting the EVM. -------------------------------------------------------------------------------- Autodetected the following ip address of your host, correct it if necessary [ 192.168.1.55 172.17.0.1 ] 192.168.1.55 Select Linux kernel location: 1: TFTP 2: SD card [ 1 ] 1 Select root file system location: 1: NFS 2: SD card [ 1 ] 1 Available kernel images in /tftproot: Image-j7-evm.bin k3-j721e-common-proc-board-infotainment.dtbo k3-j721e-common-proc-board-jailhouse.dtbo k3-j721e-common-proc-board.dtb k3-j721e-edgeai-apps.dtbo k3-j721e-pcie-backplane.dtbo k3-j721e-proc-board-tps65917.dtb k3-j721e-vision-apps.dtbo ti-fs-firmware-j721e-gp.bin ti-fs-firmware-j721e-hs-cert.bin ti-fs-firmware-j721e-hs-enc.bin Which kernel image do you want to boot from TFTP? [ Image-j7-evm.bin ] -------------------------------------------------------------------------------- Would you like to create a minicom script with the above parameters (y/n)? [ y ] y -------------------------------------------------------------------------------- Would you like to run the setup script now (y/n)? Please connect the ethernet cable as described in the Quick Start Guide. Once answering 'y' on the prompt below, you will have 300 seconds to connect the board and power cycle it before the setup times out After successfully executing this script, your EVM will be set up. You will be able to connect to it by executing 'minicom -w' or if you prefer a windows host you can set up Tera Term as explained in the Software Developer's Guide. If you connect minicom or Tera Term and power cycle the board Linux will boot. [ y ] y Welcome to minicom 2.7.1 OPTIONS: I18n Compiled on Aug 13 2017, 15:25:34. Port /dev/ttyUSB0, 16:47:36 # [At this very point restart the board with the power switch.]
The result it's a Minicom script with the Bootloader sequence and configuration to boot the TI J7 via the NFS/TFTP.
Test the NFS boot
You can reconnect to the board using the created Minicom script, and it would be this way:
# Connect to the board $ sudo minicom -S bin/setupBoard.minicom # [Restart the board with the power switch]
At the SDK root path, touch a file on the NFS'd filesystem:
$ touch targetNFS/home/1234567
At the J7 NFS session, the file will be found:
$ ls /home/ 1234567 root