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diff --git a/Documentation/nvme-rpmb.txt b/Documentation/nvme-rpmb.txt new file mode 100644 index 0000000..c30c83d --- /dev/null +++ b/Documentation/nvme-rpmb.txt @@ -0,0 +1,150 @@ +nvme-rpmb(1) +============== + +NAME +---- +nvme-rpmb - Send RPMB commands to an NVMe device + +SYNOPSIS +-------- +[verse] +'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> ] + +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. + +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 + |