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| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2021-01-22 19:18:01 +0100 |
|---|---|---|
| committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2021-01-25 01:15:34 +0100 |
| commit | a3ad3079c007adb08d24a30855b188f5cdd4ec97 (patch) | |
| tree | 56251190a5f3ec1afd0d6aca44f32323792dc3be /doc | |
| parent | b911208f41854e791503ef7f32113d2f31fc1542 (diff) | |
| download | u-boot-a3ad3079c007adb08d24a30855b188f5cdd4ec97.tar.gz u-boot-a3ad3079c007adb08d24a30855b188f5cdd4ec97.tar.xz u-boot-a3ad3079c007adb08d24a30855b188f5cdd4ec97.zip | |
doc: describe loady command
Create a man-page for the loady command.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/usage/index.rst | 1 | ||||
| -rw-r--r-- | doc/usage/loady.rst | 67 |
2 files changed, 68 insertions, 0 deletions
diff --git a/doc/usage/index.rst b/doc/usage/index.rst index 317db3b449..1304b59aad 100644 --- a/doc/usage/index.rst +++ b/doc/usage/index.rst @@ -20,6 +20,7 @@ Shell commands echo exit for + loady mbr pstore sbi diff --git a/doc/usage/loady.rst b/doc/usage/loady.rst new file mode 100644 index 0000000000..2819cc72ae --- /dev/null +++ b/doc/usage/loady.rst @@ -0,0 +1,67 @@ +.. SPDX-License-Identifier: GPL-2.0+: + +loady command +============= + +Synopsis +-------- + +:: + + loady [addr [baud]] + +Description +----------- + +The loady command is used to transfer a file to the device via the serial line +using the YMODEM 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 ymodem transmission. After the transmission the baud + rate is reset to the original value. + +Example +------- + +In the example below the terminal emulation program picocom was used to +transfer a file to the device. + +After entering the loady command the key sequence <CTRL-A><CTRL-S> is used to +let picocom prompt for the file name. Picocom invokes the program sz for the +file transfer. + +:: + + => loady 80064000 115200 + ## Ready for binary (ymodem) download to 0x80064000 at 115200 bps... + C + *** file: BOOTRISCV64.EFI + $ sz -b -vv BOOTRISCV64.EFI + Sending: BOOTRISCV64.EFI + Bytes Sent: 398976 BPS:7883 + Sending: + Ymodem sectors/kbytes sent: 0/ 0k + Transfer complete + + *** exit status: 0 *** + /1(CAN) packets, 4 retries + ## Total Size = 0x0006165f = 398943 Bytes + => echo ${filesize} + 6165f + => + +Configuration +------------- + +The command is only available if CONFIG_CMD_LOADB=y. + +Return value +------------ + +The return value $? is always 0 (true). |