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

1 files changed, 71 insertions, 0 deletions

diff --git a/src/dev/arm/amba_device.cc b/src/dev/arm/amba_device.cc
new file mode 100644
index 000000000..81c740aec
--- /dev/null
+++ b/src/dev/arm/amba_device.cc
@@ -0,0 +1,71 @@
+/*
+ * 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.
+ *
+ * Copyright (c) 2005 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: Ali Saidi
+ */
+
+#include "base/trace.hh"
+#include "dev/arm/amba_fake.hh"
+#include "mem/packet.hh"
+#include "mem/packet_access.hh"
+
+AmbaDevice::AmbaDevice(const Params *p)
+    : BasicPioDevice(p), ambaId(ULL(0xb105f00d00000000) | p->amba_id)
+{
+}
+
+bool
+AmbaDevice::readId(PacketPtr pkt)
+{
+    Addr daddr = pkt->getAddr() - pioAddr;
+    if (daddr < AMBA_PER_ID0 || daddr > AMBA_CEL_ID3)
+        return false;
+
+    pkt->allocate();
+
+    daddr -= AMBA_PER_ID0;
+    daddr <<= 1;
+    // Too noisy right now
+    //DPRINTF(AMBA, "Returning %#x for offset %#x(%d)\n", (ambaId >> daddr) & 0xFF,
+    //        pkt->getAddr() - pioAddr, daddr);
+    assert(pkt->getSize() == 4);
+    pkt->set<uint32_t>((ambaId >> daddr) & 0xFF);
+    return true;
+}
+