tree 8e9981789f3d674add3940691f59b15e9a55ec2a
parent 28079c8bd9b98ab7d9ba61f774145924524e0c9d
author Priyanga Ramasamy <priyanga24@in.ibm.com> 1633642753 -0500
committer Santosh Puranik <santosh.puranik@in.ibm.com> 1654189119 +0000

Vpd-tool:Read keyword from hardware

Vpd-tool adds an option to read any keyword
directly from hardware with the help of -H option.

This commit has the front-end portion which gets the
user option and calls the back end code which is present
in Impl class in this commit
https://gerrit.openbmc.org/c/openbmc/openpower-vpd-parser/+/47666 .

Test:
Tested on rainier.

1.
root@rain111bmc:/tmp# ./vpd-tool -r -O /sys/bus/spi/drivers/at25/spi12.0/eeprom -R CP00 -K PG -H
{
    "/sys/bus/spi/drivers/at25/spi12.0/eeprom": {
        "PG": "0x01e03fffe051ffe37fffe53fffffffffffffffffffffffffffe00c1fe00c1fffffffffffffe21dffe21dffffffffffffffe79fffe39fffe79fffe79fffffffffffffffffffffffffffffffffffffffe3bdffe3bdffe3bdffffffffe3bdffe3bdffe7f9ffe1987fe0001fe7f9ffe7f9ffe0001fe6619fe0001fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
    }
}

root@rain111bmc:/tmp# ./vpd-tool -r -O /system/chassis/motherboard/dcm0/cpu0 -R CP00 -K PG
{
    "/system/chassis/motherboard/dcm0/cpu0": {
        "PG": "0x01e03fffe051ffe37fffe53fffffffffffffffffffffffffffe00c1fe00c1fffffffffffffe21dffe21dffffffffffffffe79fffe39fffe79fffe79fffffffffffffffffffffffffffffffffffffffe3bdffe3bdffe3bdffffffffe3bdffe3bdffe7f9ffe1987fe0001fe7f9ffe7f9ffe0001fe6619fe0001fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
    }
}

2.
root@rain111bmc:/tmp# ./vpd-tool -r -H -O /sys/bus/spi/drivers/at25/spi12.0/eeprom -R VINI -K SN
{
    "/sys/bus/spi/drivers/at25/spi12.0/eeprom": {
        "SN": "YA3936110110"
    }
}
root@rain111bmc:/tmp# ./vpd-tool -r -O /system/chassis/motherboard/dcm0/cpu0 -R VINI -K SN
{
    "/system/chassis/motherboard/dcm0/cpu0": {
        "SN": "YA3936110110"
    }
}

3.
root@rain111bmc:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/8-0050/eeprom -R VSYS -K BR
{
    "/sys/bus/i2c/drivers/at24/8-0050/eeprom": {
        "BR": "S0"
    }
}

4.
root@rain111bmc:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/8-0050/eeprom -R VINI -K SN
{
    "/sys/bus/i2c/drivers/at24/8-0050/eeprom": {
        "SN": "Y131UF07302S"
    }
}

5.
root@perfrain86bmctest:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/7-0050/eeprom -R VR10 -K BD
The given keyword BD is not present in the given record VR10 in the given vpd path /sys/bus/i2c/drivers/at24/7-0050/eeprom

6.
root@perfrain86bmctest:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/7-0050/eeprom -R CP00 -K SN
The given record CP00 is not present in the given vpd path /sys/bus/i2c/drivers/at24/7-0050/eeprom

7.
root@perfrain86bmctest:/tmp# ./vpd-tool -r -H -O /sys/bus/i2c/drivers/at24/7-0050/eeprom -R VR10 -K DC
{
    "/sys/bus/i2c/drivers/at24/7-0050/eeprom": {
        "DC": "BD 201908260800"
    }
}

Signed-off-by: Priyanga Ramasamy <priyanga24@in.ibm.com>
Change-Id: I37f85fe22a2c98704bbc8f6090f0d83084d4c6f8