Kontron AM4140 U-Boot Bootloader - Manual (Page 16)

U-Boot Usage AM4140 U-Boot Bootloader
Page 16 ID 1052-0281, Rev. 1.0
P R E L I M I N A R Y
3.2 fru Command
fru
FUNCTION: Provides read/write access to the board’s FRU repository as well as
displaying FRU data
SYNTAX: fru info <FRU nr>|…
read <FRU nr> <address> <size>|…
write <FRU nr> <address> <size>
where:
fru command
info option:
displays FRU data for <FRU nr> specified
<FRU nr> parameter: hexadecimal
<0, 1, … n>
identification number of FRU device for option speci-
fied
read option:
reads FRU data for <FRU nr> specified
<address> parameter: hexadecimal
<[x … ]x>
address where data is to be stored or read from
<size> parameter: hexadecimal
<[x … ]x>
length of data in bytes to be read or written
write option:
writes FRU data to <FRU nr> specified
DESCRIPTION: This command can be used to display basic information about the FRU
repository, read out the repository content to RAM, and, if required, to
update the contents of the FRU repository.
WARNING!
Writing incorrect FRU data to the FRU repository can result in an
inoperable board (E-Keying information incorrect). Users requiring
modification to the board’s FRU data are requested to contact Kontron
for assistance before making any changes.
USAGE: Query FRU data for FRU 0
COMMAND / RESPONSE:
=> fru info 0
FRU 0 size is 0x1000 bytes
=>