You can boot a PetaLinux image on hardware
using an SD card by copying the required images manually or by flashing a wic image into the
mounted SD card.
Steps to Flash and Boot the PetaLinux Images Manually
- Copy the following files from <plnx-proj-root>/images/linux or
<plnx-proj-root>/pre-built/linux/images/ into the root directory of the
first partition, which is in FAT32 format in the SD card:
- BOOT.BIN
- image.ub
- boot.scr
- Extract the rootfs.tar.gz folder into the ext4 partition of the SD card.
- Connect the serial port on the board to your workstation.
- Open a console on the workstation and start the preferred serial communication program (For example: kermit, minicom, gtkterm) with the baud rate set to 115200 on that console.
- Power off the board.
- Set the boot mode of the board to SD boot. Refer to the board documentation for details.
- Plug the SD card into the board.
- Power on the board.
- A boot message displays on the serial console.
Steps to Flash and Boot PetaLinux Image Using WIC Image
- To generate the WIC image in Petalinux project see petalinux-package --wic Command Examples
- Go to the <plnx-proj-root>/images/linux or <plnx-proj-root>/pre-built/linux/images/ directory. For example, cd images/linux/.
- If the WIC image is compressed with XZ format, extract the petalinux-sdimage.wic.xz file using
xz
command. For example,xz -d petalinux-sdimage.wic.xz
Note: If xz package is not installed in your build machine, use the prebuilt xz binary from $PETALINUX/components/yocto/buildtools/sysroots/x86_64-petalinux-linux/usr/bin/xz - Flash the extracted petalinux-sdimage.wic image into the SD card.
- Flash the wic image in Linux
- To flash the wic image to SD card in Linux machines, connect the
SD card to the host system and use the
dd
command:dd if=petalinux-sdimage.wic of=/dev/sd<X> conv=fsync
Note: You need sudo access to do this.
- Flash the wic image in Windows
- To flash the wic image to the SD card in Windows, you can use any
of the following:
- BalenaEtcher tool
- Win32DiskImager
- Insert the SD card into the board and boot the system.
- Connect the serial port on the board to your workstation.
- Open a console on the workstation and start the preferred serial communication program (For example: kermit, minicom, gtkterm) with the baud rate set to 115200 on that console.
- Power off the board.
- Set the boot mode of the board to SD boot. Refer to the board documentation for details.
- Plug the SD card into the board.
- Power on the board. The boot logs display on the serial console:
Tip: To stop
auto-boot, hit any key when you see a message on the console:
Hit
any key to stop autoboot
.