From 8ed4f0a02cd936f717f5af0c15b64fedddd5af54 Mon Sep 17 00:00:00 2001
From: Ali Saidi <Ali.Saidi@arm.com>
Date: Mon, 23 Aug 2010 11:18:40 -0500
Subject: ARM: Add I/O devices for booting linux

--HG--
rename : src/dev/arm/Versatile.py => src/dev/arm/RealView.py
rename : src/dev/arm/versatile.cc => src/dev/arm/realview.cc
rename : src/dev/arm/versatile.hh => src/dev/arm/realview.hh
---
 src/dev/arm/rv_ctrl.cc | 113 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 src/dev/arm/rv_ctrl.cc

(limited to 'src/dev/arm/rv_ctrl.cc')

diff --git a/src/dev/arm/rv_ctrl.cc b/src/dev/arm/rv_ctrl.cc
new file mode 100644
index 000000000..e2543426b
--- /dev/null
+++ b/src/dev/arm/rv_ctrl.cc
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2010 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder.  You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * 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: Ali Saidi
+ */
+
+#include "base/trace.hh"
+#include "dev/arm/rv_ctrl.hh"
+#include "mem/packet.hh"
+#include "mem/packet_access.hh"
+
+RealViewCtrl::RealViewCtrl(Params *p)
+    : BasicPioDevice(p)
+{
+    pioSize = 0xD4;
+}
+
+Tick
+RealViewCtrl::read(PacketPtr pkt)
+{
+    assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
+    assert(pkt->getSize() == 4);
+    Addr daddr = pkt->getAddr() - pioAddr;
+    pkt->allocate();
+
+    switch(daddr) {
+      case ProcId:
+        pkt->set(params()->proc_id);
+        break;
+      case Clock24:
+        Tick clk;
+        clk = (Tick)(curTick / (24 * SimClock::Float::MHz));
+        pkt->set((uint32_t)(clk));
+        break;
+      case Flash:
+        pkt->set<uint32_t>(0);
+        break;
+      default:
+        panic("Tried to read RealView I/O at offset %#x that doesn't exist\n", daddr);
+        break;
+    }
+    pkt->makeAtomicResponse();
+    return pioDelay;
+
+}
+
+Tick
+RealViewCtrl::write(PacketPtr pkt)
+{
+    assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
+
+    Addr daddr = pkt->getAddr() - pioAddr;
+    switch (daddr) {
+      case Flash:
+        break;
+      default:
+        panic("Tried to write RVIO at offset %#x that doesn't exist\n", daddr);
+        break;
+    }
+    pkt->makeAtomicResponse();
+    return pioDelay;
+}
+
+void
+RealViewCtrl::serialize(std::ostream &os)
+{
+    panic("Need to implement serialization\n");
+}
+
+void
+RealViewCtrl::unserialize(Checkpoint *cp, const std::string &section)
+{
+    panic("Need to implement serialization\n");
+}
+
+RealViewCtrl *
+RealViewCtrlParams::create()
+{
+    return new RealViewCtrl(this);
+}
-- 
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