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.. SPDX-License-Identifier: GPL-2.0-or-later .. index:: single: write (command) write command ============= Synopsis -------- :: write <interface> <dev[:part|#partname]> <addr> <blk#> <cnt> Description ----------- The write command can be used for raw writing data to a block device (or partition therein), i.e. without going through a file system. The block device is specified using the <interface> (e.g. "mmc") and <dev> parameters. If the block device has a partition table, one can optionally specify a partition number (using the :part syntax) or partition name (using the #partname syntax). The command then reads the <cnt> blocks of data starting at block number <blk#> of the given device/partition to the memory address <addr>. Examples -------- .. code-block:: bash # Write to the third sector of the partition named 'bootdata' of mmc device 0 write mmc 0#bootdata $loadaddr 2 1 Configuration ------------- The write command is only available if CONFIG_CMD_WRITE=y. Return value ------------ The command sets the return value $? to 0 (true) on success and to 1 (false) in case of an error. |