From a6bb2a682f9b7eae887aad7bb9cbcaa134c297f0 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ian@liberator.relativity.greenend.org.uk>
Date: Sat, 8 Jan 2011 23:45:28 +0000
Subject: [PATCH] realtime: allow suppression of use of the PICs watchdog
 feature

---
 hostside/realtime.c | 2 ++
 hostside/realtime.h | 1 +
 hostside/startup.c  | 2 +-
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/hostside/realtime.c b/hostside/realtime.c
index 2a469ea..4761d98 100644
--- a/hostside/realtime.c
+++ b/hostside/realtime.c
@@ -10,6 +10,7 @@ const char *progname= "realtime";
 
 CommandInput cmdi;
 int picio_send_noise= 1;
+int disable_watchdog;
 
 static const char *device= "/dev/railway";
 static const char *logcopy_fn;
@@ -472,6 +473,7 @@ int main(int argc, const char **argv) {
       case 'm': sta_state= Sta_Manual;                   break;
       case 'V': simlog_full=1;                           break;
       case 'B': nononblock_stdin=1;                      break;
+      case 'W': disable_watchdog=1;                      break;
       case 'L': logcopy_fn= arg;                  arg=0; break;
       case 'S': simulate= arg;                    arg=0; break;
       case 'D':	debug_arg_spec(arg);              arg=0; break;
diff --git a/hostside/realtime.h b/hostside/realtime.h
index 2affa20..83e5362 100644
--- a/hostside/realtime.h
+++ b/hostside/realtime.h
@@ -108,6 +108,7 @@ extern AdjunctsAddr **adjaddrs;
 
 extern CommandInput cmdi;
 extern int picio_send_noise;
+extern int disable_watchdog;
 
 #define CIXF_U                 0x0000ffffu
 #define CIXF_FORCE             0x00010000u
diff --git a/hostside/startup.c b/hostside/startup.c
index cab2995..460c789 100644
--- a/hostside/startup.c
+++ b/hostside/startup.c
@@ -152,7 +152,7 @@ static void sta_goto(StartupState new_state) {
   }
   if (piob.l) serial_transmit(&piob);
 
-  if (new_state >= Sta_Run) watchdog_start();
+  if (new_state >= Sta_Run && !disable_watchdog) watchdog_start();
   else watchdog_stop();
      
   toev_start(&sta_toev);
-- 
2.30.2