From: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Date: Tue, 8 Nov 2022 06:17:30 +0000 (+0800)
Subject: doc: cmd: wget: add documentation
X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=bfce0ca9d48dbee7c06526db808ae20759545db5;p=u-boot.git

doc: cmd: wget: add documentation

Add documentation for the wget command.

Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Ramon Fried <rfried.dev@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
---

diff --git a/doc/usage/cmd/wget.rst b/doc/usage/cmd/wget.rst
new file mode 100644
index 0000000000..4fcfa03954
--- /dev/null
+++ b/doc/usage/cmd/wget.rst
@@ -0,0 +1,61 @@
+.. SPDX-License-Identifier: GPL-2.0+:
+
+wget command
+============
+
+Synopsis
+--------
+
+::
+    wget address [[hostIPaddr:]path]
+
+Description
+-----------
+
+The wget command is used to download a file from an HTTP server.
+
+wget command will use HTTP over TCP to download files from an HTTP server.
+Currently it can only download image from an HTTP server hosted on port 80.
+
+address
+    memory address for the data downloaded
+
+hostIPaddr
+    IP address of the HTTP server, defaults to the value of environment
+    variable *serverip*
+
+path
+    path of the file to be downloaded.
+
+Example
+-------
+
+In the example the following steps are executed:
+
+* setup client network address
+* download a file from the HTTP server
+
+::
+
+    => setenv autoload no
+    => dhcp
+    BOOTP broadcast 1
+    *** Unhandled DHCP Option in OFFER/ACK: 23
+    *** Unhandled DHCP Option in OFFER/ACK: 23
+    DHCP client bound to address 192.168.1.105 (210 ms)
+    => wget ${loadaddr} 192.168.1.254:/index.html
+    HTTP/1.0 302 Found
+    Packets received 4, Transfer Successful
+
+Configuration
+-------------
+
+The command is only available if CONFIG_CMD_WGET=y.
+
+CONFIG_PROT_TCP_SACK can be turned on for the TCP SACK options. This will
+help increasing the downloading speed.
+
+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 d6283fab8e..0bc82887e9 100644
--- a/doc/usage/index.rst
+++ b/doc/usage/index.rst
@@ -79,6 +79,7 @@ Shell commands
    cmd/ums
    cmd/ut
    cmd/wdt
+   cmd/wget
    cmd/xxd
 
 Booting OS