New FLASH configuration option for network support

[Uwe Kindler]

Hello,

when a RedBoot configuration supports network connection, it sends some
packet at startup to ensure that IP address is not in use. When the board is
not connected to a network, this procdure needs a quite long time - for the
EDOSK-2674 board this means that a startup with network support but without
a network connection last several seconds. This is quite annoying especialy
when debugging a application where the board needs to be reset quite often.
Because  network support is not needed if the board is currently not
connected to a network I would like to suggest the following patch which
enables flash configuration of network support - the patch is tested for
EDOSK-2674 board and works well.

Regards, Uwe

eCos port for Renesas EDOSK-2674
http://www.htwm.de/ukindler/ecos


Index: redboot/current/include/redboot.h
===================================================================
--- old/redboot.h 2003-10-15 17:52:04.000000000 +0200
+++ redboot.h 2004-01-06 20:19:38.000000000 +0100
@@ -111,6 +111,7 @@
 EXTERN bootp_header_t my_bootp_info;
 EXTERN int gdb_port;
 EXTERN bool net_debug;
+EXTERN bool net_active;
 #endif

 #ifdef CYGFUN_REDBOOT_BOOT_SCRIPT


Index: redboot/current/src/net/net_io.c
===================================================================
--- old/net_io.c 2003-10-09 22:23:36.000000000 +0200
+++ net_io.c 2004-01-06 20:21:22.000000000 +0100
@@ -75,6 +75,12 @@
                       CONFIG_BOOL,
                       false
     );
+RedBoot_config_option("Network support active",
+                      net_active,
+                      ALWAYS_ENABLED, true,
+                      CONFIG_BOOL,
+                      true
+    );
 #if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
 RedBoot_config_option("Default network device",
                       net_device,
@@ -684,14 +690,22 @@
     net_debug = false;
 #endif
     gdb_port = CYGNUM_REDBOOT_NETWORKING_TCP_PORT;
+    net_active = true;
 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
     // Fetch values from saved config data, if available
 #if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
     flash_get_config("net_device", &default_devname, CONFIG_NETPORT);
 #endif
     flash_get_config("net_debug", &net_debug, CONFIG_BOOL);
+    flash_get_config("net_active", &net_active, CONFIG_BOOL);
     flash_get_config("gdb_port", &gdb_port, CONFIG_INT);
     flash_get_config("bootp", &use_bootp, CONFIG_BOOL);
+    //
+    // stop initialization if user does not need network interface
+    //
+    if (!net_active) {
+        return;
+    }
     if (!use_bootp) {
         flash_get_IP("bootp_my_ip", &__local_ip_addr);
 #ifdef CYGSEM_REDBOOT_NETWORKING_USE_GATEWAY