doc: move README.NetConsole to HTML documentation

Convert README.NetConsole to reStructured text and move it to
doc/usage/netconsole.rst.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

1 files changed, 0 insertions, 97 deletions

diff --git a/doc/README.NetConsole b/doc/README.NetConsole
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-
-In U-Boot, we implemented the networked console via the standard
-"devices" mechanism, which means that you can switch between the
-serial and network input/output devices by adjusting the 'stdin' and
-'stdout' environment variables. To switch to the networked console,
-set either of these variables to "nc". Input and output can be
-switched independently.
-
-CONFIG_NETCONSOLE_BUFFER_SIZE - Override the default buffer size
-
-We use an environment variable 'ncip' to set the IP address and the
-port of the destination. The format is <ip_addr>:<port>. If <port> is
-omitted, the value of 6666 is used. If the env var doesn't exist, the
-broadcast address and port 6666 are used. If it is set to an IP
-address of 0 (or 0.0.0.0) then no messages are sent to the network.
-The source / listening port can be configured separately by setting
-the 'ncinport' environment variable and the destination port can be
-configured by setting the 'ncoutport' environment variable.
-
-For example, if your server IP is 192.168.1.1, you could use:
-
-	=> setenv nc 'setenv stdout nc;setenv stdin nc'
-	=> setenv ncip 192.168.1.1
-	=> saveenv
-	=> run nc
-
-
-On the host side, please use this script to access the console:
-
-	tools/netconsole <ip> [port]
-
-The script uses netcat to talk to the board over UDP.  It requires you to
-specify the target IP address (or host name, assuming DNS is working). The
-script can be interrupted by pressing ^T (CTRL-T).
-
-Be aware that in some distributives (Fedora Core 5 at least)
-usage of nc has been changed and -l and -p options are considered
-as mutually exclusive. If nc complains about options provided,
-you can just remove the -p option from the script.
-
-It turns out that 'netcat' cannot be used to listen to broadcast
-packets. We developed our own tool 'ncb' (see tools directory) that
-listens to broadcast packets on a given port and dumps them to the
-standard output.  It will be built when compiling for a board which
-has CONFIG_NETCONSOLE defined.  If the netconsole script can find it
-in PATH or in the same directory, it will be used instead.
-
-For Linux, the network-based console needs special configuration.
-Minimally, the host IP address needs to be specified. This can be
-done either via the kernel command line, or by passing parameters
-while loading the netconsole.o module (when used in a loadable module
-configuration). Please refer to Documentation/networking/logging.txt
-file for the original Ingo Molnar's documentation on how to pass
-parameters to the loadable module.
-
-The format of the kernel command line parameter (for the static
-configuration) is as follows:
-
-  netconsole=[src-port]@[src-ip]/[<dev>],[tgt-port]@<tgt-ip>/[tgt-macaddr]
-
-where
-
-  src-port	source for UDP packets
-		(defaults to 6665)
-  src-ip	source IP to use
-		(defaults to the interface's address)
-  dev		network interface
-		(defaults to eth0)
-  tgt-port	port for logging agent
-		(defaults to 6666)
-  tgt-ip	IP address for logging agent
-		(this is the required parameter)
-  tgt-macaddr	ethernet MAC address for logging agent
-		(defaults to broadcast)
-
-Examples:
-
-  netconsole=4444@10.0.0.1/eth1,9353@10.0.0.2/12:34:56:78:9a:bc
-
-or
-
-  netconsole=@/,@192.168.3.1/
-
-Please note that for the Linux networked console to work, the
-ethernet interface has to be up by the time the netconsole driver is
-initialized. This means that in case of static kernel configuration,
-the respective Ethernet interface has to be brought up using the "IP
-Autoconfiguration" kernel feature, which is usually done by defaults
-in the ELDK-NFS-based environment.
-
-To browse the Linux network console output, use the 'netcat' tool invoked
-as follows:
-
-	nc -u -l -p 6666
-
-Note that unlike the U-Boot implementation the Linux netconsole is
-unidirectional, i. e. you have console output only in Linux.