X86: Change the CMOS from a sub-device to a real SimObject

--HG--
rename : src/dev/x86/south_bridge/cmos.cc => src/dev/x86/cmos.cc
rename : src/dev/x86/south_bridge/cmos.hh => src/dev/x86/cmos.hh

1 files changed, 88 insertions, 0 deletions

diff --git a/src/dev/x86/cmos.hh b/src/dev/x86/cmos.hh
new file mode 100644
index 000000000..04df9dd04
--- /dev/null
+++ b/src/dev/x86/cmos.hh
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2008 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#ifndef __DEV_X86_CMOS_HH__
+#define __DEV_X86_CMOS_HH__
+
+#include "dev/io_device.hh"
+#include "dev/mc146818.hh"
+#include "params/Cmos.hh"
+
+namespace X86ISA
+{
+
+class Cmos : public BasicPioDevice
+{
+  protected:
+    Tick latency;
+
+    uint8_t address;
+
+    static const int numRegs = 128;
+
+    uint8_t regs[numRegs];
+
+    uint8_t readRegister(uint8_t reg);
+    void writeRegister(uint8_t reg, uint8_t val);
+
+    class X86RTC : public MC146818
+    {
+      public:
+        X86RTC(EventManager *em, const std::string &n, const struct tm time,
+                bool bcd, Tick frequency) :
+            MC146818(em, n, time, bcd, frequency)
+        {
+        }
+      protected:
+        void handleEvent()
+        {
+            return;
+        }
+    } rtc;
+
+  public:
+    typedef CmosParams Params;
+
+    Cmos(const Params *p) : BasicPioDevice(p), latency(p->pio_latency),
+        rtc(this, "rtc", p->time, true, ULL(5000000000))
+    {
+        pioSize = 2;
+        memset(regs, 0, numRegs * sizeof(uint8_t));
+        address = 0;
+    }
+
+    Tick read(PacketPtr pkt);
+
+    Tick write(PacketPtr pkt);
+};
+
+}; // namespace X86ISA
+
+#endif //__DEV_X86_CMOS_HH__