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- .. SPDX-License-Identifier: GPL-2.0+:
- cp command
- ==========
- Synopsis
- --------
- ::
- cp source target count
- cp.b source target count
- cp.w source target count
- cp.l source target count
- cp.q source target count
- Description
- -----------
- The cp command is used to copy *count* chunks of memory from the *source*
- address to the *target* address. If the *target* address points to NOR flash,
- the flash is programmed.
- The number bytes in one chunk is defined by the suffix defaulting to 4 bytes:
- ====== ==========
- suffix chunk size
- ====== ==========
- .b 1 byte
- .w 2 bytes
- .l 4 bytes
- .q 8 bytes
- <none> 4 bytes
- ====== ==========
- source
- source address, hexadecimal
- target
- target address, hexadecimal
- count
- number of words to be copied, hexadecimal
- Examples
- --------
- The example device has a NOR flash where the lower part of the flash is
- protected. We first copy to RAM, then to unprotected flash. Last we try to
- write to protectd flash.
- ::
- => mtd list
- List of MTD devices:
- * nor0
- - device: flash@0
- - parent: root_driver
- - driver: cfi_flash
- - path: /flash@0
- - type: NOR flash
- - block size: 0x20000 bytes
- - min I/O: 0x1 bytes
- - 0x000000000000-0x000002000000 : "nor0"
- => cp.b 4020000 5000000 200000
- => cp.b 4020000 1e00000 20000
- Copy to Flash... done
- => cp.b 4020000 0 20000
- Copy to Flash... Can't write to protected Flash sectors
- =>
- Configuration
- -------------
- The cp command is available if CONFIG_CMD_MEMORY=y. Support for 64 bit words
- (cp.q) depends on CONFIG_MEM_SUPPORT_64BIT_DATA=y. Copying to flash depends on
- CONFIG_MTD_NOR_FLASH=y.
- Return value
- ------------
- The return value $? is set to 0 (true) if the command was successfully,
- 1 (false) otherwise.
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