Table of Contents
Advertisement
7.4. Kontron Bootloader Command Extensions
Kontron's implementation of U-Boot includes some enhancements to provide board specific functions. They are not
part of standard U-Boot as maintained by DENX. The following table provides a complete listing of all Kontron
command extensions on the PITX-iMX8M.
Table 42: Bootloader Command Extensions
Command
kboardinfo
7.4.1. kboardinfo - Kontron Board Information
The "kboardinfo" command shows a summary of board serialization data gathered from the system EEPROM.
Figure 34: Kboardinfo
=> => kboardinfo
Manufacturer:
Product name:
Material number:
Serial number:
MAC0 (ethaddr):
MAC1 (eth1addr):
Manufacturer Date: 06/03/2020
Revision:
B00
CPU: i.MX8MQ rev2.1 1300 MHz (running at 800 MHz)
CPU: Industrial temperature grade (-40C to 105C) at 65C
Reset cause: POR
7.5. Bootloader Environment
The bootloader environment is used to control bootloader and OS startup behavior. Environment variables can be
used to control boot timing (e.g. bootdelay), interface properties (e.g. baudrate, ethact) or they define memory
locations where OS images are stored before boot (e.g. loadaddr, fdt_addr). In addition, bootloader shell commands
can be combined to environment scripts.
The redundant bootloader environment is permanently stored on SDcard at offset 0x400000. During bootloader
operation, the environment is held in RAM memory and can be modified and written back to persistent storage.
Bootloader commands to modify the environment are summed up under the "env" command group:
env default [-f] –a
env default [-f] var [...]
env delete [-f] var [...]
env edit name
env exists name
env print [-a | name ...]
env run var [...]
env save
env set [-f] name [arg ...]
However, the legacy commands for environment handling are still available:
"setenv",
"editenv",
Description
Kontron Board Information - Displays a summary of board and
configuration information
Kontron Europe GmbH
pITX-iMX8M
44011-0408-13-4
UTD080002
00:e0:4b:6f:dc:cd
na
[forcibly] reset default environment
[forcibly] reset variable(s) to their default values
[forcibly] delete variable(s)
edit environment variable
tests for existence of variable
print environment
run commands in an environment variable
save environment
www.kontron.com
pITX-iMX8M – Rev. 1.1
// 55
Advertisement
Table of Contents
