Kontron SMARC-sAMX6i - Manual (Page 34)

SMARC-sAMX6i / Bootloader Operation
memory range and printed to the console.
If the optional 3rd parameter <cksum-address> is specified, the md5 message digest is calculated over the specified
memory range and compared with the md5 message digest at <cksum-address>. If the digest is identical, the command
returns 0; if the digests do not match, a value other than zero is returned. When a comparison is made, nothing is printed
to the console since this usage of the command is meant to be used within scripts.
The md5 message digest at <cksum-address> may be specified in ASCII or binary format.
Usage
Calculate an md5 message digest: Check the md5 message digest of a file previously loaded to 100000 with a size of 80000
and its md5 message digest loaded to 10000 in a script
=> setenv check_crc “if md5sum 100000 80000 10000; then echo ‘md5 message
digest OK’; else echo ‘md5 message digest BAD’; fi”
=>run check_crc
md5 message digest OK
=>
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