--- /dev/null
+/* $Id$ */
+
+/* @file
+ * BadDevice implemenation
+ */
+
+#include <deque>
+#include <string>
+#include <vector>
+
+#include "base/trace.hh"
+#include "cpu/exec_context.hh"
+#include "dev/scsi_ctrl.hh"
+#include "dev/baddev.hh"
+#include "dev/tsunamireg.h"
+#include "dev/tsunami.hh"
+#include "mem/functional_mem/memory_control.hh"
+#include "sim/builder.hh"
+#include "sim/system.hh"
+
+using namespace std;
+
+BadDevice::BadDevice(const string &name,
+ Addr addr, Addr mask, MemoryController *mmu, const string &devicename)
+ : MmapDevice(name, addr, mask, mmu), devname(devicename)
+{
+}
+
+Fault
+BadDevice::read(MemReqPtr &req, uint8_t *data)
+{
+
+ panic("Device %s not imlpmented\n", devname);
+ return No_Fault;
+}
+
+Fault
+BadDevice::write(MemReqPtr &req, const uint8_t *data)
+{
+ panic("Device %s not imlpmented\n", devname);
+ return No_Fault;
+}
+
+
+BEGIN_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
+
+ SimObjectParam<MemoryController *> mmu;
+ Param<Addr> addr;
+ Param<Addr> mask;
+ Param<string> devicename;
+
+END_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
+
+BEGIN_INIT_SIM_OBJECT_PARAMS(BadDevice)
+
+ INIT_PARAM(mmu, "Memory Controller"),
+ INIT_PARAM(addr, "Device Address"),
+ INIT_PARAM(mask, "Address Mask"),
+ INIT_PARAM(devicename, "Name of device to error on")
+
+END_INIT_SIM_OBJECT_PARAMS(BadDevice)
+
+CREATE_SIM_OBJECT(BadDevice)
+{
+ return new BadDevice(getInstanceName(), addr, mask, mmu, devicename);
+}
+
+REGISTER_SIM_OBJECT("BadDevice", BadDevice)
--- /dev/null
+/*
+ * Copyright (c) 2003 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.
+ */
+
+/* @file
+ * This devices just panics when touched. For example if you have a
+ * kernel that touches the frame buffer which isn't allowed.
+ */
+
+#ifndef __BADDEV_HH__
+#define __BADDEV_HH__
+
+#include "mem/functional_mem/mmap_device.hh"
+
+/**
+ * BadDevice
+ * This device just panics when accessed. It is supposed to warn
+ * the user that the kernel they are running has unsupported
+ * options (i.e. frame buffer)
+ */
+class BadDevice : public MmapDevice
+{
+ private:
+
+ std::string devname;
+ protected:
+
+ public:
+ /**
+ * The default constructor.
+ */
+ BadDevice(const std::string &name, Addr addr, Addr mask,
+ MemoryController *mmu, const std::string &devicename);
+
+ virtual Fault read(MemReqPtr &req, uint8_t *data);
+ virtual Fault write(MemReqPtr &req, const uint8_t *data);
+
+
+};
+
+#endif // __BADDEV_HH__
switch (offset) {
case PCI0_INTERRUPT_LINE:
case PCI_CACHE_LINE_SIZE:
+ case PCI_LATENCY_TIMER:
*(uint8_t *)&config.data[offset] = byte_value;
break;
: MmapDevice(name, addr, mask, mmu),
cons(c), status_store(0), valid_char(false)
{
+ IER = 0;
}
Fault
}
case 0x8: // Data register (RX)
- if (!valid_char)
- panic("Invalid character");
+// if (!valid_char)
+// panic("Invalid character");
DPRINTF(TsunamiUart, "read data register \'%c\' %#02x\n",
isprint(next_char) ? next_char : ' ', next_char);
return No_Fault;
case 0x9: // Interrupt Enable Register
- *data = 0;
+ // This is the lovely way linux checks there is actually a serial
+ // port at the desired address
+ if (IER == 0)
+ *data = 0;
+ else if (IER == 0x0F)
+ *data = 0x0F;
+ else
+ *data = 0;
+ return No_Fault;
+ case 0xA:
+ //*data = 2<<6; // This means a 8250 serial port, do we want a 16550?
+ *data = 0; // This means a 8250 serial port, do we want a 16550?
return No_Fault;
}
*data = 0;
default:
DPRINTF(TsunamiUart, "writing status register %#x \n",
- *(uint64_t *)data);
+ *(uint8_t *)data);
return No_Fault;
}
return No_Fault;
case 0x9: // DLM
DPRINTF(TsunamiUart, "writing to DLM/IER %#x\n", *(uint8_t*)data);
+ IER = *(uint8_t*)data;
return No_Fault;
case 0xc: // MCR
DPRINTF(TsunamiUart, "writing to MCR %#x\n", *(uint8_t*)data);
int status_store;
uint8_t next_char;
bool valid_char;
+ uint8_t IER;
public:
TsunamiUart(const std::string &name, SimConsole *c,
projects / gem5.git / commitdiff