README: improve documentation of network related CONFIG_ settings

Add documentation for CONFIG_GATEWAYIP and CONFIG_NETMASK; also add information which environment variables are set. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Simon Glass <sjg@chromium.org>

README: improve documentation of network related CONFIG_ settings
Add documentation for CONFIG_GATEWAYIP and CONFIG_NETMASK; also add information which environment variables are set. Signed-off-by: Wolfgang Denk <wd@denx.de> Acked-by: Simon Glass <sjg@chromium.org>
Wolfgang Denk
1 parent c0f40859f9
Showing 1 changed file with 19 additions and 0 deletions Side-by-side Diff
README
@@ -1432,17 +1432,36 @@
 		Define a default value for the IP address to use for
 		the default Ethernet interface, in case this is not
 		determined through e.g. bootp.
+		(Environment variable "ipaddr")
  
 - Server IP address:
 		CONFIG_SERVERIP
  
 		Defines a default value for the IP address of a TFTP
 		server to contact when using the "tftboot" command.
+		(Environment variable "serverip")
  
 		CONFIG_KEEP_SERVERADDR
  
 		Keeps the server's MAC address, in the env 'serveraddr'
 		for passing to bootargs (like Linux's netconsole option)
+
+- Gateway IP address:
+		CONFIG_GATEWAYIP
+
+		Defines a default value for the IP address of the
+		default router where packets to other networks are
+		sent to.
+		(Environment variable "gatewayip")
+
+- Subnet mask:
+		CONFIG_NETMASK
+
+		Defines a default value for the subnet mask (or
+		routing prefix) which is used to determine if an IP
+		address belongs to the local subnet or needs to be
+		forwarded through a router.
+		(Environment variable "netmask")
  
 - Multicast TFTP Mode:
 		CONFIG_MCAST_TFTP
...	...	@@ -1432,17 +1432,36 @@
1432	1432	Define a default value for the IP address to use for
1433	1433	the default Ethernet interface, in case this is not
1434	1434	determined through e.g. bootp.
	1435	+ (Environment variable "ipaddr")
1435	1436
1436	1437	- Server IP address:
1437	1438	CONFIG_SERVERIP
1438	1439
1439	1440	Defines a default value for the IP address of a TFTP
1440	1441	server to contact when using the "tftboot" command.
	1442	+ (Environment variable "serverip")
1441	1443
1442	1444	CONFIG_KEEP_SERVERADDR
1443	1445
1444	1446	Keeps the server's MAC address, in the env 'serveraddr'
1445	1447	for passing to bootargs (like Linux's netconsole option)
	1448	+
	1449	+- Gateway IP address:
	1450	+ CONFIG_GATEWAYIP
	1451	+
	1452	+ Defines a default value for the IP address of the
	1453	+ default router where packets to other networks are
	1454	+ sent to.
	1455	+ (Environment variable "gatewayip")
	1456	+
	1457	+- Subnet mask:
	1458	+ CONFIG_NETMASK
	1459	+
	1460	+ Defines a default value for the subnet mask (or
	1461	+ routing prefix) which is used to determine if an IP
	1462	+ address belongs to the local subnet or needs to be
	1463	+ forwarded through a router.
	1464	+ (Environment variable "netmask")
1446	1465
1447	1466	- Multicast TFTP Mode:
1448	1467	CONFIG_MCAST_TFTP