NAME
nvme-rpmb - Send RPMB commands to an NVMe device
SYNOPSIS
nvme
rpmb <device> [--cmd=<command> | -c
<command>]
[--msgfile=<data-file> | -f <data-file>]
[--keyfile=<key-file> | -g <key-file>]
[--key=<key> | -k <key>] [--msg=<data> |
-d <data>]
[--address=<offset> | -o <offset>]
[--blocks=<512 byte sectors> | -b <sectors>]
[--target=<target-id> | -t <id>]
[--output-format=<fmt> | -o <fmt>] [--verbose |
-v]
DESCRIPTION
For the NVMe device given, send an nvme rpmb command and provide the results.
The <device> parameter is mandatory and NVMe character device (ex: /dev/nvme0) must be specified. If the given device supports RPMB targets, command given with --cmd or -c option shall be sent to the controller. If given NVMe device doesn’t support RPMB targets, a message indicating the same shall be printed along with controller register values related RPMB.
OPTIONS
-c <command>, --cmd=<command>
RPMB command to be sent to the device. It can be one of the following
info - print
information regarding supported RPMB targets and
access and total sizes. No further arguments are
required
program-key -
program 'key' specified with -k option or key read from
file specified with --keyfile option to the specified
RPMB target given with --target or -t options. As per
spec, this is one time action which can't be undone.
read-counter -
Read 'write counter' of specified RPMB target. The
counter value read is printed onto STDOUT
read-config -
Read 512 bytes of device configuration block data of
specified RPMB target of the NVMe device. The data read
is written to input file specified with --msgfile or -f
option.
write-config - Write 512 byes of device configuration block
data
from file specified by --msgfile or -f options to the
RPMB target specified with --target or -t options.
read-data -
Supports authenticated data reading from specified
RPMB target (--target or -t option) at given offset
specified with --address or -o option, using key
specified using --keyfile or -k options. --blocks or
-o option should be given to read the amount of data
to be read in 512 byte blocks.
write-data -
Supports authenticated data writing to specified RPMB
target (--target or -t option) at given offset
specified with --address or -o option, using key
specified using --keyfile or -k options. --blocks or
-o option should be given to indicate amount of data
to be written in 512 byte blocks.
For data
transfer (read/write) commands, if the specified size is not
within the total size supported by a target, the request is
failed
nvme-rpmb without sending it to device. RPMB target 0 is
used as the
default target if --target or -t is not specified. 0x0 is
used as the
default address if no -address or -o option is
specified,
-t <target>, --target=<target>
RPMB target id. This should be one of the supported RPMB targets as reported by info command. If nothing is given, default of 0 is used as RPMB target.
-k <key>, --key=<key>, -g <key-file>, --keyfile=<key-file>
Authentication key to be used for read/write commands. This should have been already programmed by program-key command for given target. Key can be specified on command line using --key or -k options. Key can also be specified using file argument specified with --keyfile or -g options.
-f <data-file>, --msgfile=<data-file>
Name of the file to be used for data transfer commands (read or write). For read command, if an existing file is specified, it will be appended.
-d <data>, --msg=<data>
These options provide the data on the command line itself.
-o <offset>, --address=<offset>
The address (in 512 byte sector offset from 0) to be used for data transfer commands (read or write) for a specified RPMB target.
-b, --blocks=<sectors>
The size in 512 byte sectors to be used for data transfer commands (read or write) for a specified RPMB target.
-o <fmt>, --output-format=<fmt>
Set the reporting format to normal, json or binary. Only one output format can be used at a time.
-v, --verbose
Increase the information detail in the output.
EXAMPLES
• Print RPMB support information of an NVMe device
# nvme rpmb /dev/nvme0 --cmd=info
• Program SecretKey as authentication key for target 1
# nvme rpmb /dev/nvme0 --cmd=program-key -key='SecretKey' --target=1
• Read current write counter of RPMB target 0
# nvme rpmb /dev/nvme0 --cmd=read-counter --target=0
• Read configuration data block of target 2 into config.bin file
# nvme rpmb /dev/nvme0 --cmd=read-config --target=2 -f config.bin
• Write 200 blocks of (512 bytes) from input.bin onto target 0
# nvme rpmb /dev/nvme0 -c write-data -t 0 -f input.bin -b 200 -k 'SecretKey'
• Read 200 blocks of (512 bytes) from target 2, at offset 0x100 and save the
• data onto output.bin
# nvme rpmb /dev/nvme0 -c read-data -t 2 -f out.bin -b 200 -o 0x100
NVME
Part of the nvme-user suite