Man page - nvme-rpmb(1)

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Manual

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>]


                        [--output-format=<fmt> | -o <fmt>] [--verbose | -v]

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-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.

•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

Part of the nvme-user suite

05/02/2025 NVMe