Hi Heinrich,
On Sun, 25 Jun 2023 at 14:17, Heinrich Schuchardt heinrich.schuchardt@canonical.com wrote:
Provide a man-page for the saves command.
Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com
doc/usage/cmd/saves.rst | 88 +++++++++++++++++++++++++++++++++++++++++ doc/usage/index.rst | 1 + 2 files changed, 89 insertions(+) create mode 100644 doc/usage/cmd/saves.rst
Reviewed-by: Simon Glass sjg@chromium.org
diff --git a/doc/usage/cmd/saves.rst b/doc/usage/cmd/saves.rst new file mode 100644 index 0000000000..57299029ff --- /dev/null +++ b/doc/usage/cmd/saves.rst @@ -0,0 +1,88 @@ +.. SPDX-License-Identifier: GPL-2.0+:
+saves command +=============
+Synopsis +--------
+::
- saves [offset [size [baud]]]
+Description +-----------
+The *saves* command is used to transfer a file from the device via the serial +line using the Motorola S-record file format.
+offset
- start address of memory area to save, defaults to 0x0
+size
- size of memory area to save, defaults to 0x0
+baud
- baud rate to use for download. This parameter is only available if
Would 'upload' be better in this case?
- CONFIG_SYS_LOADS_BAUD_CHANGE=y
+Example +-------
+In the example the *screen* command is used to connect to the U-Boot serial +console.
+In a first screen session a file is loaded form the SD-card and the *saves*
from
+command is invoked. <CTRL+A><k> is used to kill the screen session.
+A new screen session is started which logs the output to a file and the +<ENTER> key is hit to start the file output. <CTRL+A><k> is issued to kill the +screen session.
+The log file is converted to a binary file using the *srec_cat* command. +A negative offset of -1337982976 (= -0x4c000000) is applied to compensate for
We might be better to use: -4c000000 (decimal xxx)
since U-Boot does default to hex
+the offset used in the *saves* command.
+.. code-block::
- $ screen /dev/ttyUSB0 115200
- => echo $scriptaddr
- 0x4FC00000
- => load mmc 0:1 $scriptaddr boot.txt
- 124 bytes read in 1 ms (121.1 KiB/s)
- => saves $scriptaddr $filesize
- ## Ready for S-Record upload, press ENTER to proceed ...
- Really kill this window [y/n]
- $ screen -Logfile out.srec -L /dev/ttyUSB0 115200
- S0030000FC
- S3154FC00000736574656E76206175746F6C6F616420AD
- S3154FC000106E6F0A646863700A6C6F6164206D6D633E
- S3154FC0002020303A3120246664745F616464725F72B3
- S3154FC00030206474620A6C6F6164206D6D6320303AC0
- S3154FC000403120246B65726E656C5F616464725F72DA
- S3154FC0005020736E702E6566690A626F6F74656669C6
- S3154FC0006020246B65726E656C5F616464725F7220CB
- S3114FC00070246664745F616464725F720A38
- S70500000000FA
- ## S-Record upload complete
- =>
- Really kill this window [y/n]
- $ srec_cat out.srec -offset -1337982976 -Output out.txt -binary 2>/dev/null
- $ cat out.txt
- setenv autoload no
- dhcp
- load mmc 0:1 $fdt_addr_r dtb
- load mmc 0:1 $kernel_addr_r snp.efi
- bootefi $kernel_addr_r $fdt_addr_r
- $
+Configuration +-------------
+The command is only available if CONFIG_CMD_SAVES=y. The parameter to set the +baud rate is only available if CONFIG_SYS_LOADS_BAUD_CHANGE=y
+Return value +------------
+The return value $? is 0 (true) on success, 1 (false) otherwise. diff --git a/doc/usage/index.rst b/doc/usage/index.rst index ef3e87fed0..388e59f173 100644 --- a/doc/usage/index.rst +++ b/doc/usage/index.rst @@ -85,6 +85,7 @@ Shell commands cmd/read cmd/reset cmd/rng
- cmd/saves cmd/sbi cmd/sf cmd/scp03
-- 2.40.1
Regards, Simon