NVME-RPMB(1) NVMe Manual NVME-RPMB(1)

nvme-rpmb - Send RPMB commands to an NVMe device

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> ]

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.

-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-couter   - 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 writting 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 trasnfer commands (read or write) for a specified RPMB target.

-b, --blocks=<sectors>

The size in 512 byte sectors to be used for data trasnfer commands (read or write) for a specified RPMB target.

•Print RPMB support information of an NVMe device
# nvme rpmb /dev/nvme0 --cmd=info
•Program SecreteKey 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 'SecreteKey'
•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

Part of the nvme-user suite

11/11/2021 NVMe