Path to Programmable III Training Blog #5 Use PetaLinux to Create bootable SD card

Use PetaLinux to Create bootable SD card

1 Start Petalinux

This training session provide hardware design file for Ultra96v2,

but key file used in petalinx is BSP files, it shall be access from

https://avtinc.sharepoint.com/teams/ET-Downloads/Shared%20Documents/Forms/AllItems.aspx?id=%2Fteams%2FET%2DDownloads%2FShared%20Documents%2Fprojects%2Fpublic%5Frelease&p=true&ga=1

since petalinux has been installed, start petalinux environment with

source ~/tools/Xilinx/Petalinux/PetaLinux/2022.1/settings.sh 

2 Create Petalinux Project

Create petalinux project for petalinux-create command,

petalinux-create -t project -s u96v2_sbc_base_2021_2.bsp -n Lab1

change directory and the config the project with petalinux-config,

after a while the text format  GUI  appears, first line is ZYNQMP core configuration,

press enter and go into submenu,

go further the SD card settings

choose psu_sd_0, this part links with hardware design,

go back to config UART setting,

use psu_uart_1

press escape and exit the configuration,save the configuration file,

the configuration is OK. This is standard yocto configuration with customized Zynqmp core.

3 Build Petalinux Project

Build the project with petalinux-build,

petalinux-build -c avnet-image-minimal

most of the sdk file shall be download from github or third part web, it the link lost, build ceased with error,

if successful, the file needed for boot image is ready to included in images/linux.

cd images/linux

There are always web link lost in build process, so far is the lab training process.

There are solutions, download cache files from AMD xilinx website and redirect the mirror link, but that is 60G, take a while.

4 Packing Petalinux Project

Packing the files the with petalinux-package

petalinux-package --boot --fsbl zynqmp_fsbl.elf --u-boot u-boot.elf --pmufw pmufw.elf --fpga system.bit

to generate BOOT.BIN

Then prepare SD card with the following layout

• Partition 1:
  • Format: FAT32
  • Size: 1GB
  • Label: boot
• Partition 2:
  • Format: ext4
  • Size: 4GB or more
  • Label: rootfs

 Partition 1 use less then 500M, so it shall be >500M, copy BOOT.BIN and  image.ub here,

Partition 2 shall use image burner like echet, rufus or linux command dd as

sudo dd if=rootfs.ext4 of=/dev/sdX2
sync

Plug the SD card into the slot and boot the Ultra96 to run petalinux.

The FPGA bitstream is binding with the petalinux in build and packing process, if there is any changes in hardware design. Repeat the process.