Kontron AM4150 U-Boot Bootloader - Manual (Page 24)

U-Boot Usage AM4150 U-Boot Bootloader
Page 24 ID 1052-5678, Rev. 1.0
P R E L I M I N A R Y
3.6 md5sum Command
md5sum
FUNCTION: Creates or checks the md5 message digest over a memory area
SYNTAX: md5sum []
where:
md5sum command
parameter: hexadecimal
start address of memory area
parameter: hexadecimal
length of memory area
parameter:
if present: compares the calculated md5 message
digest with the md5 message digest available at this
address
if absent: calculates the md5 message digest over the
specified memory range and prints it to the console
DESCRIPTION: This command is used to create or check the md5 message digest over
a memory area.
If the optional 3
rd
parameter is omitted, the md5
message digest is calculated over the specified memory range and
printed to the console.
If the optional 3
rd
parameter is specified, the md5
message digest is calculated over the specified memory range and
compared with the md5 message digest at . 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 may be specified in
ASCII or binary format.
USAGE: Calculate an md5 message digest
COMMAND / RESPONSE:
=> md5sum 100000 80000
8fe7006660a2df2265b7cd707eb98786
=>