pITX-iMX8M – User Guide Rev. 1.4
www.kontron.com
// 60
"editenv",
"printenv"
"saveenv".
U-Boot standard environment variables are set up for the PITX-iMX8M module.
Table 46: Standard Environment Variables
Variable
Value
Description
baudrate
115200
Serial line baudrate
bootcmd
run distro_bootcmd
Try booting (in this order) from devices defined in the
boot_targets variable:
mmc0 (eMMC), mmc1 (SD card), usb0, dhcp
bootdelay
3
Wait 3 seconds before executing bootcmd
ethprime
FEC
Use Ethernet port FEC as default
loadaddr
0x40480000
Default memory location for OS boot
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.
Summary of Contents for 44011-0208-13-2
Page 1: ...USER GUIDE pITX iMX8M User Guide Rev 1 4 Doc ID 1064 7940...
Page 2: ...pITX iMX8M User Guide Rev 1 4 This page has been intentionally left blank...
Page 23: ...pITX iMX8M User Guide Rev 1 4 www kontron com 23 4 3 Block Diagram Figure 3 Block Diagram...
Page 24: ...pITX iMX8M User Guide Rev 1 4 www kontron com 24...
