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- .. SPDX-License-Identifier: GPL-2.0+:
- loadb command
- =============
- Synopsis
- --------
- ::
- loadb [addr [baud]]
- Description
- -----------
- The loadb command is used to transfer a file to the device via the serial line
- using the Kermit protocol.
- The number of transferred bytes is saved in environment variable filesize.
- addr
- load address, defaults to environment variable loadaddr or if loadaddr is
- not set to configuration variable CONFIG_SYS_LOAD_ADDR
- baud
- baud rate for the Kermit transmission. After the transmission the baud
- rate is reset to the original value.
- Example
- -------
- In the example below the terminal emulation program picocom and G-Kermit
- serve to transfer a file to a device.
- .. code-block:: bash
- picocom --baud 115200 --send-cmd "gkermit -iXvs" /dev/ttyUSB0
- After entering the loadb command the key sequence <CTRL-A><CTRL-S> is used to
- let picocom prompt for the file name. Picocom invokes G-Kermit for the file
- transfer.
- ::
- => loadb 60800000 115200
- ## Ready for binary (kermit) download to 0x60800000 at 115200 bps...
- *** file: helloworld.efi
- $ gkermit -iXvs helloworld.efi
- G-Kermit 2.01, The Kermit Project, 2021-11-15
- Escape back to your local Kermit and give a RECEIVE command.
- KERMIT READY TO SEND...
- |
- *** exit status: 0 ***
- ## Total Size = 0x00000c00 = 3072 Bytes
- ## Start Addr = 0x60800000
- =>
- The transfer can be cancelled by pressing <CTRL+C>.
- Configuration
- -------------
- The command is only available if CONFIG_CMD_LOADB=y.
- Return value
- ------------
- The return value $? is 0 (true) on success, 1 (false) on error.
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