Kontron Bootloader Command Extensions; Kboardinfo - Kontron Board Information; Md5Sum - Md5 Message Digest; Table 37: Bootloader Command Extensions - Kontron PITX-IMX8M User Manual

7.4. Kontron Bootloader Command Extensions

Kontron's implementation of U-Boot includes certain 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 37: Bootloader Command Extensions

Command
kboardinfo
md5sum
watchdog

7.4.1. kboardinfo - Kontron Board Information

The "kboardinfo" command shows a summary of board serialization data gathered from the system EEPROM.
=> kboardinfo
Manufacturer:
Product name:
Material number:
Serial number:
MAC0 (ethaddr):
MAC1 (eth1addr):
Manufacturer Date: 11/15/2017
Revision: B00
Boot Counter:
CPU: Freescale i.MX7D rev1.2 at 996 MHz
==>
7.4.2. md5sum – MD5 Message Digest
The "md5sum" command is already part of standard U-Boot implementation. However Kontron provides the "-a"
extension (ASCII) that allows to check MD5 checksum of a given memory area (e.g. a binary image copied into
memory) against the checksum that has been copied into an ASCII file on an external linux host. To achieve this, the
ASCII string in the file representing the checksum is converted into hexadecimal values and compared against the
calculated one.
Syntax:
=> help md5sum
md5sum - compute MD5 message digest
Usage:
md5sum address count [[*]sum]
- compute MD5 message digest [save to sum]
md5sum -v address count [*]sum
- verify md5sum of memory area
md5sum -a address count [*]sum
- verify md5sum given in ASCII format
Example:
Calculate MD5 checksum of a given binary using the md5sum command on linux host and redirect output messages
into a file:
# md5sum image.bin >image.md5
Description
Kontron Board Information - Displays a summary of board and
configuration information
Creates or checks the md5 message digest over a memory area
Start and control i.MX7 CPU watchdog
Kontron Europe GmbH
PITX-iMX8M
51009-0208-10-2
NZD070001
00:a0:a5:79:25:30
00:a0:a5:79:25:31
10
pITX-iMX8M – Rev. 0.7 Preliminary
www.kontron.com // 54