colibri_imx6: fix video stdout in default environment

[oweals/u-boot.git] / doc / README.NetConsole

diff --git a/doc/README.NetConsole b/doc/README.NetConsole
index 94c8816762f4060e29a9997e7b63ba55d0e944c5..af7fc6043a3f3f02497f7527342b18551402be9d 100644 (file)
--- a/doc/README.NetConsole
+++ b/doc/README.NetConsole
@@ -6,11 +6,16 @@ serial and network input/output devices by adjusting the 'stdin' and
 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:
 
@@ -36,29 +41,9 @@ 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. use it as follows:
-
-+++++++++++++++++++++++++++++++++++++++++++
-#! /bin/bash
-
-[ $# = 1 ] || { echo "Usage: $0 target_ip" >&2 ; exit 1 ; }
-TARGET_IP=$1
-
-stty icanon echo intr ^T
-./ncb &
-nc -u ${TARGET_IP} 6666
-stty icanon echo intr ^C
-kill 0
-+++++++++++++++++++++++++++++++++++++++++++
-
-Again, this script takes exactly one argument, which is interpreted
-as the target IP address (or host name, assuming DNS is working). The
-script can be interrupted by pressing ^T (CTRL-T).
-
-The 'ncb' tool can be found in the tools directory; it will not be
-built by default so you will ither have to adjust the Makefile or
-build it manually.
-
+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