nvme-rpmb.1 - Online Linux Manual Page

NVME−RPMB - Online Linux Manual PageSection : 1
Updated : 02/01/2023
Source : NVMe
Note : NVMe Manual

NAMEnvme-rpmb − Send RPMB commands to an NVMe device

DESCRIPTIONFor 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 requiredprogram−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 STDOUTread−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.

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

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