Support for serial console.

Change-Id: Ia1b11f68cc4be175076562b7daf0291b14df498b
Origin: Google Shared Technology
RTC: 97495
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/13250
Tested-by: Jenkins Server
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

1 files changed, 109 insertions, 0 deletions

diff --git a/src/usr/console/console.C b/src/usr/console/console.C
new file mode 100644
index 000000000..74f496f93
--- /dev/null
+++ b/src/usr/console/console.C
@@ -0,0 +1,109 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/usr/console/console.C $                                   */
+/*                                                                        */
+/* OpenPOWER HostBoot Project                                             */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2014                             */
+/* [+] International Business Machines Corp.                              */
+/* [+] Google Inc.                                                        */
+/*                                                                        */
+/*                                                                        */
+/* Licensed under the Apache License, Version 2.0 (the "License");        */
+/* you may not use this file except in compliance with the License.       */
+/* You may obtain a copy of the License at                                */
+/*                                                                        */
+/*     http://www.apache.org/licenses/LICENSE-2.0                         */
+/*                                                                        */
+/* Unless required by applicable law or agreed to in writing, software    */
+/* distributed under the License is distributed on an "AS IS" BASIS,      */
+/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
+/* implied. See the License for the specific language governing           */
+/* permissions and limitations under the License.                         */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+#include <console/consoleif.H>
+#include <util/sprintf.H>
+#include <sys/msg.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <vector>
+#include "daemon.H"
+
+namespace CONSOLE
+{
+    msg_q_t g_msgq = msg_q_create();
+
+    void display(const char* str)
+    {
+        timespec_t time;
+        clock_gettime(CLOCK_MONOTONIC, &time);
+
+        msg_t* msg = msg_allocate();
+        msg->type = DISPLAY;
+        msg->data[0] = time.tv_sec;
+        msg->data[1] = time.tv_nsec;
+        msg->extra_data = strdup(str);
+        msg_send(g_msgq, msg);
+    }
+
+    void displayf(const char* header, const char* format, ...)
+    {
+        va_list args;
+        va_start(args, format);
+
+        vdisplayf(header, format, args);
+
+        va_end(args);
+    }
+
+    void vdisplayf(const char* header, const char* format, va_list args)
+    {
+        using Util::vasprintf;
+
+        class OutputBuffer : public Util::ConsoleBufferInterface
+        {
+            public:
+                int putc(int c)
+                {
+                    str.push_back(c);
+                    return c;
+                }
+
+                size_t operator()(int c) { return putc(c); }
+
+                std::vector<char> str;
+        };
+
+        OutputBuffer b;
+
+        if (header)
+        {
+            while(*header)
+            {
+                b.putc(*header);
+                header++;
+            }
+            b.putc('|');
+        }
+
+        vasprintf(b, format, args);
+        b.putc('\n');
+        b.putc('\0');
+
+        if (b.str.size())
+        {
+            display(&b.str[0]);
+        }
+    }
+
+    void flush()
+    {
+        msg_t* msg = msg_allocate();
+        msg->type = SYNC;
+        msg_sendrecv(g_msgq, msg);
+    }
+
+}