gem5  v22.1.0.0
rtc.hh
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2021 Huawei International
3  * All rights reserved
4  *
5  * The license below extends only to copyright in the software and shall
6  * not be construed as granting a license to any other intellectual
7  * property including but not limited to intellectual property relating
8  * to a hardware implementation of the functionality of the software
9  * licensed hereunder. You may use the software subject to the license
10  * terms below provided that you ensure that this notice is replicated
11  * unmodified and in its entirety in all distributions of the software,
12  * modified or unmodified, in source code or in binary form.
13  *
14  * Redistribution and use in source and binary forms, with or without
15  * modification, are permitted provided that the following conditions are
16  * met: redistributions of source code must retain the above copyright
17  * notice, this list of conditions and the following disclaimer;
18  * redistributions in binary form must reproduce the above copyright
19  * notice, this list of conditions and the following disclaimer in the
20  * documentation and/or other materials provided with the distribution;
21  * neither the name of the copyright holders nor the names of its
22  * contributors may be used to endorse or promote products derived from
23  * this software without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36  */
37 
38 #ifndef __DEV_RISCV_RTC_HH__
39 #define __DEV_RISCV_RTC_HH__
40 
41 #include "dev/intpin.hh"
42 #include "dev/mc146818.hh"
43 #include "params/RiscvRTC.hh"
44 #include "sim/sim_object.hh"
45 
46 namespace gem5
47 {
48 
54 class RiscvRTC : public SimObject
55 {
56  public:
57 
58  class RTC: public MC146818
59  {
60  public:
62 
64 
65  RTC(EventManager *em, const std::string &n, const struct tm time,
66  bool bcd, Tick frequency, int int_pin_count);
67 
68  protected:
69  void handleEvent();
70  } rtc;
71 
72  typedef RiscvRTCParams Params;
73 
74  RiscvRTC(const Params &params);
75 
76  Port & getPort(const std::string &if_name,
77  PortID idx=InvalidPortID) override;
78 
79  void startup() override;
80 
81  void serialize(CheckpointOut &cp) const override;
82  void unserialize(CheckpointIn &cp) override;
83 };
84 
85 } // namespace gem5
86 
87 #endif //__DEV_RISCV_RTC_HH__
Real-Time Clock (MC146818)
Definition: mc146818.hh:42
Ports are used to interface objects to each other.
Definition: port.hh:62
RTC(EventManager *em, const std::string &n, const struct tm time, bool bcd, Tick frequency, int int_pin_count)
Definition: rtc.cc:53
void handleEvent()
Definition: rtc.cc:64
std::vector< std::unique_ptr< IntSource > > intPin
Definition: rtc.hh:63
NOTE: This is a generic wrapper around the MC146818 RTC.
Definition: rtc.hh:55
gem5::RiscvRTC::RTC rtc
RiscvRTCParams Params
Definition: rtc.hh:72
Port & getPort(const std::string &if_name, PortID idx=InvalidPortID) override
Get a port with a given name and index.
Definition: rtc.cc:73
void serialize(CheckpointOut &cp) const override
Serialize an object.
Definition: rtc.cc:88
void unserialize(CheckpointIn &cp) override
Unserialize an object.
Definition: rtc.cc:95
RiscvRTC(const Params &params)
Definition: rtc.cc:46
void startup() override
startup() is the final initialization call before simulation.
Definition: rtc.cc:82
Abstract superclass for simulation objects.
Definition: sim_object.hh:148
STL vector class.
Definition: stl.hh:37
const Params & params() const
Definition: sim_object.hh:176
Bitfield< 31 > n
Definition: misc_types.hh:462
Bitfield< 32 > tm
Definition: misc.hh:112
Bitfield< 2 > em
Definition: misc.hh:607
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
const PortID InvalidPortID
Definition: types.hh:246
std::ostream CheckpointOut
Definition: serialize.hh:66
int16_t PortID
Port index/ID type, and a symbolic name for an invalid port id.
Definition: types.hh:245
uint64_t Tick
Tick count type.
Definition: types.hh:58

Generated on Wed Dec 21 2022 10:22:34 for gem5 by doxygen 1.9.1