Bootloader Environment Update; Table 43: Standard Environment Variables - Kontron pITX-iMX8M User Manual

 "printenv"
 "saveenv".
U-Boot standard environment variables are set up for the PITX-iMX8M module.

Table 43: Standard Environment Variables

Variable Value
baudrate 115200
bootcmd run distro_bootcmd
bootdelay 3
ethprime FEC
loadaddr 0x40480000

7.6. Bootloader Environment Update

On the PITX-iMX8M it is possible to update the U-Boot environment separately.
This enables the user to either update from a previous version of the official Kontron U-Boot environment (default
U-Boot settings), or restore the default in case of problems.
Update procedure:
 Download the official U-Boot environment from the Kontron EMD Customer Section.
For Release R10 of the U-Boot, the file is called 'pitx-imx8m-env-r10.bin'.

 Put the file into the root directory of a FAT or EXT formatted USB drive.
 Start the system and stop the boot process at the U-Boot prompt.
 Run the following commands to load the file and flash it into the correct flash memory address (example
for R10):
usb start && load usb 0:1 $loadaddr pitx-imx8m-env-r10.bin
env import –b $loadaddr 4000
saveenv
 After reset the updated environment will be active.
Description
Serial line baudrate
Try booting (in this order) from devices defined in the
boot_targets variable:
mmc0 (eMMC), mmc1 (SD card), usb0, dhcp
Wait 3 seconds before executing bootcmd
Use Ethernet port FEC as default
Default memory location for OS boot
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pITX-iMX8M – Rev. 1.1
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