[PATCH v2 1/1] doc: man-page for tftpput

[Heinrich Schuchardt]

Provide a man-page for the tftpput command.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---
v2:
	fix typos
---
 doc/usage/cmd/tftpput.rst | 69 +++++++++++++++++++++++++++++++++++++++
 doc/usage/index.rst       |  1 +
 2 files changed, 70 insertions(+)
 create mode 100644 doc/usage/cmd/tftpput.rst

diff --git a/doc/usage/cmd/tftpput.rst b/doc/usage/cmd/tftpput.rst
new file mode 100644
index 0000000000..c14df86628
--- /dev/null
+++ b/doc/usage/cmd/tftpput.rst
@@ -0,0 +1,69 @@
+.. SPDX-License-Identifier: GPL-2.0+:
+
+tftpput command
+===============
+
+Synopsis
+--------
+
+::
+
+    tftpput address size [[hostIPaddr:]filename]
+
+Decription
+----------
+
+The tftpput command is used to transfer a file to a TFTP server.
+
+address
+    memory address where the data starts
+
+size
+    number of bytes to be transferred
+
+hostIPaddr
+    IP address of the TFTP server, defaults to $serverip
+
+filename
+    path of the file to be written. If not provided, the client's IP address is
+    used to construct a default file name, e.g. C0.A8.00.28.img for IP address
+    192.168.0.40.
+
+Example
+-------
+
+In the example the following steps are executed:
+
+* setup client network address
+* load a file from the SD-card
+* send the file via TFTP to a server
+
+::
+
+    => setenv autoload no
+    => dhcp
+    BOOTP broadcast 1
+    DHCP client bound to address 192.168.1.40 (7 ms)
+    => load mmc 0:1 $loadaddr test.txt
+    260096 bytes read in 13 ms (19.1 MiB/s)
+    => tftpput $loadaddr $filesize 192.168.1.3:upload/test.txt
+    Using ethernet at 1c30000 device
+    TFTP to server 192.168.1.3; our IP address is 192.168.1.40
+    Filename 'upload/test.txt'.
+    Save address: 0x42000000
+    Save size:    0x3f800
+    Saving: #################
+         4.4 MiB/s
+    done
+    Bytes transferred = 260096 (3f800 hex)
+    =>
+
+Configuration
+-------------
+
+The command is only available if CONFIG_CMD_TFTPPUT=y.
+
+Return value
+------------
+
+The return value $? is 0 (true) on success and 1 (false) otherwise.
diff --git a/doc/usage/index.rst b/doc/usage/index.rst
index 28f9683a3e..f1beeec59c 100644
--- a/doc/usage/index.rst
+++ b/doc/usage/index.rst
@@ -63,6 +63,7 @@ Shell commands
    cmd/scp03
    cmd/setexpr
    cmd/size
+   cmd/tftpput
    cmd/true
    cmd/ums
    cmd/wdt
-- 
2.37.2