Kontron COMe-cP2020 - Manual (Page 89)

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COMe-P2020 User Guide
89
Table 6-8: vpd Command
vpd Provides functions for configuration of external interfaces
SYNTAX: vpd print []|import (|all_params)
vpd command
print option:
displays VPD information (source: System EEPROM)
(if is not used, all VPD entities are displayed)
parameter: text string
<[x … ]x>
name of VPD entity addressed by option
import option:
imports VPD information to the U-Boot environment
(source: System EEPROM; target: RAM)
all_params parameter: text constant
all_params
selects all VPD entities for importing to the U-Boot environment
DESCRIPTION: Vital Product Data are information stored in the System EEPROM which are required for proper operation of
the board. With this command the VPD entities can be displayed or imported to the U-Boot environment in
RAM.
Among the VPD entities are, for example, the board serial number and the board’s Ethernet MAC addresses.
If the option “import” is invoked, existing VPD entities in the environment in RAM are overwritten. If a
“saveenv” is then invoked, the previously stored values in the currently active SPI boot flash environment
area are overwritten.
USAGE: 1. Display all VPD entities:
=> vpd print
=>
2. Display eth1addr entity
=> vpd print eth1addr
eth1addr=00:80:82:47:12:02
=>
3. Import eth1addr entity to environment
=> vpd import eth1addr
import eth1addr = 00:80:82:47:12:02 to … environment
=>
4. Import all VPD entities to environment
=> vpd import all_params
imported VPD entity as follows:>
import = to environment
.
.
.
import = to environment
=>