New Global For Console Daemon

This change implements a new global variable that indicates
whether the console daemon has been started. This variable
is checked in the doShutdown path prior to printing any
console traces.

There may be a situation very early in the IPL where we
attempt to write to console before the console daemon has
been started. This causes timeouts and IPL failures.

Change-Id: Ibec90d2207e5db9ef3b9507503d1ea9e2eb7cf6d
CQ: SW431130
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/60060
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Nicholas E. Bofferding <bofferdn@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Michael Baiocchi <mbaiocch@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

4 files changed, 33 insertions, 4 deletions

diff --git a/src/include/util/misc.H b/src/include/util/misc.H
index 78d17f591..56592a7f8 100644
--- a/src/include/util/misc.H
+++ b/src/include/util/misc.H
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2017                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2018                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -55,6 +55,20 @@ namespace Util
      * @return N/A
      */
     void setIsTargetingLoaded( void );
+
+    /**
+     * @brief Determines if the Console daemon has been started
+     *
+     * @return bool true if Console daemon has been started; false otherwise
+     */
+    bool isConsoleStarted();
+
+    /**
+     * @brief Sets the global variable to indicate that the Console daemon has
+     *        been started. This should only be called once when the console
+     *        daemon starts.
+     */
+    void setIsConsoleStarted();
 };
 
 #endif
diff --git a/src/lib/utilmisc.C b/src/lib/utilmisc.C
index d91af9bc1..36f568d11 100644
--- a/src/lib/utilmisc.C
+++ b/src/lib/utilmisc.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2017                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2018                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -55,6 +55,17 @@ void setIsTargetingLoaded()
     g_isTargetingLoaded = true;
 }
 
+static bool g_isConsoleStarted = false;
+
+bool isConsoleStarted()
+{
+    return g_isConsoleStarted;
+}
+
+void setIsConsoleStarted()
+{
+    g_isConsoleStarted = true;
+}
 
 };
 
diff --git a/src/usr/console/daemon.C b/src/usr/console/daemon.C
index b51122561..0887afc7c 100644
--- a/src/usr/console/daemon.C
+++ b/src/usr/console/daemon.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2014,2017                        */
+/* Contributors Listed Below - COPYRIGHT 2014,2018                        */
 /* [+] Google Inc.                                                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
@@ -31,6 +31,7 @@
 #include <initservice/initserviceif.H>
 #include "uart.H"
 #include "daemon.H"
+#include <util/misc.H>
 
 extern char hbi_ImageId[];
 
@@ -72,6 +73,8 @@ namespace CONSOLE
             Uart::g_device->initialize();
         }
 
+        Util::setIsConsoleStarted();
+
         // Display a banner denoting the hostboot version
         char banner[256];
         snprintf(banner, sizeof(banner),
diff --git a/src/usr/initservice/baseinitsvc/initservice.C b/src/usr/initservice/baseinitsvc/initservice.C
index 6ba26e392..2f88aa723 100644
--- a/src/usr/initservice/baseinitsvc/initservice.C
+++ b/src/usr/initservice/baseinitsvc/initservice.C
@@ -48,6 +48,7 @@
 #include    <hwas/common/hwas_reasoncodes.H>
 #include    <console/consoleif.H>
 #include    <sbe/sbereasoncodes.H>
+#include    <util/misc.H>
 
 #include    <errl/errludstring.H>
 #include    <errl/errludprintk.H>
@@ -771,7 +772,7 @@ void InitService::doShutdown(uint64_t i_status,
     {
         CONSOLE::displayf(NULL, "System shutting down with error status 0x%X",
                          i_status);
-        if(VFS::module_is_loaded("libconsole.so"))
+        if(Util::isConsoleStarted())
         {
             // Only flush the trace when the console module is loaded
             CONSOLE::flush();