system.hh (11574:868c31fcca24) system.hh (12005:f4b9607db0af)
1/*
2 * Copyright (c) 2010, 2012-2013, 2015-2016 ARM Limited
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 * Copyright (c) 2002-2005 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Ali Saidi
41 */
42
43#ifndef __ARCH_ARM_SYSTEM_HH__
44#define __ARCH_ARM_SYSTEM_HH__
45
46#include <memory>
47#include <string>
48#include <vector>
49
50#include "kern/linux/events.hh"
51#include "params/ArmSystem.hh"
52#include "params/GenericArmSystem.hh"
53#include "sim/sim_object.hh"
54#include "sim/system.hh"
55
56class GenericTimer;
57class ThreadContext;
58
59class ArmSystem : public System
60{
61 protected:
62 /**
63 * PC based event to skip the dprink() call and emulate its
64 * functionality
65 */
66 Linux::DebugPrintkEvent *debugPrintkEvent;
67
68 /** Bootloaders */
69 std::vector<std::unique_ptr<ObjectFile>> bootLoaders;
70
71 /**
72 * Pointer to the bootloader object
73 */
74 ObjectFile *bootldr;
75
76 /**
77 * True if this system implements the Security Extensions
78 */
79 const bool _haveSecurity;
80
81 /**
82 * True if this system implements the Large Physical Address Extension
83 */
84 const bool _haveLPAE;
85
86 /**
87 * True if this system implements the virtualization Extensions
88 */
89 const bool _haveVirtualization;
90
91 /**
92 * Pointer to the Generic Timer wrapper.
93 */
94 GenericTimer *_genericTimer;
95
96 /**
97 * True if the register width of the highest implemented exception level is
98 * 64 bits (ARMv8)
99 */
100 bool _highestELIs64;
101
102 /**
103 * Reset address if the highest implemented exception level is 64 bits
104 * (ARMv8)
105 */
106 const Addr _resetAddr64;
107
108 /**
109 * Supported physical address range in bits if the highest implemented
110 * exception level is 64 bits (ARMv8)
111 */
112 const uint8_t _physAddrRange64;
113
114 /**
115 * True if ASID is 16 bits in AArch64 (ARMv8)
116 */
117 const bool _haveLargeAsid64;
118
1/*
2 * Copyright (c) 2010, 2012-2013, 2015-2016 ARM Limited
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 * Copyright (c) 2002-2005 The Regents of The University of Michigan
15 * All rights reserved.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions are
19 * met: redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer;
21 * redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution;
24 * neither the name of the copyright holders nor the names of its
25 * contributors may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39 *
40 * Authors: Ali Saidi
41 */
42
43#ifndef __ARCH_ARM_SYSTEM_HH__
44#define __ARCH_ARM_SYSTEM_HH__
45
46#include <memory>
47#include <string>
48#include <vector>
49
50#include "kern/linux/events.hh"
51#include "params/ArmSystem.hh"
52#include "params/GenericArmSystem.hh"
53#include "sim/sim_object.hh"
54#include "sim/system.hh"
55
56class GenericTimer;
57class ThreadContext;
58
59class ArmSystem : public System
60{
61 protected:
62 /**
63 * PC based event to skip the dprink() call and emulate its
64 * functionality
65 */
66 Linux::DebugPrintkEvent *debugPrintkEvent;
67
68 /** Bootloaders */
69 std::vector<std::unique_ptr<ObjectFile>> bootLoaders;
70
71 /**
72 * Pointer to the bootloader object
73 */
74 ObjectFile *bootldr;
75
76 /**
77 * True if this system implements the Security Extensions
78 */
79 const bool _haveSecurity;
80
81 /**
82 * True if this system implements the Large Physical Address Extension
83 */
84 const bool _haveLPAE;
85
86 /**
87 * True if this system implements the virtualization Extensions
88 */
89 const bool _haveVirtualization;
90
91 /**
92 * Pointer to the Generic Timer wrapper.
93 */
94 GenericTimer *_genericTimer;
95
96 /**
97 * True if the register width of the highest implemented exception level is
98 * 64 bits (ARMv8)
99 */
100 bool _highestELIs64;
101
102 /**
103 * Reset address if the highest implemented exception level is 64 bits
104 * (ARMv8)
105 */
106 const Addr _resetAddr64;
107
108 /**
109 * Supported physical address range in bits if the highest implemented
110 * exception level is 64 bits (ARMv8)
111 */
112 const uint8_t _physAddrRange64;
113
114 /**
115 * True if ASID is 16 bits in AArch64 (ARMv8)
116 */
117 const bool _haveLargeAsid64;
118
119 /**
120 * Range for memory-mapped m5 pseudo ops. The range will be
121 * invalid/empty if disabled.
122 */
123 const AddrRange _m5opRange;
124
119 protected:
120 /**
121 * Get a boot loader that matches the kernel.
122 *
123 * @param obj Kernel binary
124 * @return Pointer to boot loader ObjectFile or nullptr if there
125 * is no matching boot loader.
126 */
127 ObjectFile *getBootLoader(ObjectFile *const obj);
128
129 public:
130 typedef ArmSystemParams Params;
131 const Params *
132 params() const
133 {
134 return dynamic_cast<const Params *>(_params);
135 }
136
137 ArmSystem(Params *p);
138 ~ArmSystem();
139
140 /**
141 * Initialise the system
142 */
143 virtual void initState();
144
145 virtual Addr fixFuncEventAddr(Addr addr)
146 {
147 // Remove the low bit that thumb symbols have set
148 // but that aren't actually odd aligned
149 if (addr & 0x1)
150 return addr & ~1;
151 return addr;
152 }
153
154 /** true if this a multiprocessor system */
155 bool multiProc;
156
157 /** Returns true if this system implements the Security Extensions */
158 bool haveSecurity() const { return _haveSecurity; }
159
160 /** Returns true if this system implements the Large Physical Address
161 * Extension */
162 bool haveLPAE() const { return _haveLPAE; }
163
164 /** Returns true if this system implements the virtualization
165 * Extensions
166 */
167 bool haveVirtualization() const { return _haveVirtualization; }
168
169 /** Sets the pointer to the Generic Timer. */
170 void setGenericTimer(GenericTimer *generic_timer)
171 {
172 _genericTimer = generic_timer;
173 }
174
175 /** Get a pointer to the system's generic timer model */
176 GenericTimer *getGenericTimer() const { return _genericTimer; }
177
178 /** Returns true if the register width of the highest implemented exception
179 * level is 64 bits (ARMv8) */
180 bool highestELIs64() const { return _highestELIs64; }
181
182 /** Returns the highest implemented exception level */
183 ExceptionLevel highestEL() const
184 {
185 if (_haveSecurity)
186 return EL3;
187 if (_haveVirtualization)
188 return EL2;
189 return EL1;
190 }
191
192 /** Returns the reset address if the highest implemented exception level is
193 * 64 bits (ARMv8) */
194 Addr resetAddr64() const { return _resetAddr64; }
195
196 /** Returns true if ASID is 16 bits in AArch64 (ARMv8) */
197 bool haveLargeAsid64() const { return _haveLargeAsid64; }
198
199 /** Returns the supported physical address range in bits if the highest
200 * implemented exception level is 64 bits (ARMv8) */
201 uint8_t physAddrRange64() const { return _physAddrRange64; }
202
203 /** Returns the supported physical address range in bits */
204 uint8_t physAddrRange() const
205 {
206 if (_highestELIs64)
207 return _physAddrRange64;
208 if (_haveLPAE)
209 return 40;
210 return 32;
211 }
212
213 /** Returns the physical address mask */
214 Addr physAddrMask() const
215 {
216 return mask(physAddrRange());
217 }
218
125 protected:
126 /**
127 * Get a boot loader that matches the kernel.
128 *
129 * @param obj Kernel binary
130 * @return Pointer to boot loader ObjectFile or nullptr if there
131 * is no matching boot loader.
132 */
133 ObjectFile *getBootLoader(ObjectFile *const obj);
134
135 public:
136 typedef ArmSystemParams Params;
137 const Params *
138 params() const
139 {
140 return dynamic_cast<const Params *>(_params);
141 }
142
143 ArmSystem(Params *p);
144 ~ArmSystem();
145
146 /**
147 * Initialise the system
148 */
149 virtual void initState();
150
151 virtual Addr fixFuncEventAddr(Addr addr)
152 {
153 // Remove the low bit that thumb symbols have set
154 // but that aren't actually odd aligned
155 if (addr & 0x1)
156 return addr & ~1;
157 return addr;
158 }
159
160 /** true if this a multiprocessor system */
161 bool multiProc;
162
163 /** Returns true if this system implements the Security Extensions */
164 bool haveSecurity() const { return _haveSecurity; }
165
166 /** Returns true if this system implements the Large Physical Address
167 * Extension */
168 bool haveLPAE() const { return _haveLPAE; }
169
170 /** Returns true if this system implements the virtualization
171 * Extensions
172 */
173 bool haveVirtualization() const { return _haveVirtualization; }
174
175 /** Sets the pointer to the Generic Timer. */
176 void setGenericTimer(GenericTimer *generic_timer)
177 {
178 _genericTimer = generic_timer;
179 }
180
181 /** Get a pointer to the system's generic timer model */
182 GenericTimer *getGenericTimer() const { return _genericTimer; }
183
184 /** Returns true if the register width of the highest implemented exception
185 * level is 64 bits (ARMv8) */
186 bool highestELIs64() const { return _highestELIs64; }
187
188 /** Returns the highest implemented exception level */
189 ExceptionLevel highestEL() const
190 {
191 if (_haveSecurity)
192 return EL3;
193 if (_haveVirtualization)
194 return EL2;
195 return EL1;
196 }
197
198 /** Returns the reset address if the highest implemented exception level is
199 * 64 bits (ARMv8) */
200 Addr resetAddr64() const { return _resetAddr64; }
201
202 /** Returns true if ASID is 16 bits in AArch64 (ARMv8) */
203 bool haveLargeAsid64() const { return _haveLargeAsid64; }
204
205 /** Returns the supported physical address range in bits if the highest
206 * implemented exception level is 64 bits (ARMv8) */
207 uint8_t physAddrRange64() const { return _physAddrRange64; }
208
209 /** Returns the supported physical address range in bits */
210 uint8_t physAddrRange() const
211 {
212 if (_highestELIs64)
213 return _physAddrRange64;
214 if (_haveLPAE)
215 return 40;
216 return 32;
217 }
218
219 /** Returns the physical address mask */
220 Addr physAddrMask() const
221 {
222 return mask(physAddrRange());
223 }
224
225 /**
226 * Range used by memory-mapped m5 pseudo-ops if enabled. Returns
227 * an invalid/empty range if disabled.
228 */
229 const AddrRange &m5opRange() const { return _m5opRange; }
230
219 /** Returns true if the system of a specific thread context implements the
220 * Security Extensions
221 */
222 static bool haveSecurity(ThreadContext *tc);
223
224 /** Returns true if the system of a specific thread context implements the
225 * virtualization Extensions
226 */
227 static bool haveVirtualization(ThreadContext *tc);
228
229 /** Returns true if the system of a specific thread context implements the
230 * Large Physical Address Extension
231 */
232 static bool haveLPAE(ThreadContext *tc);
233
234 /** Returns true if the register width of the highest implemented exception
235 * level for the system of a specific thread context is 64 bits (ARMv8)
236 */
237 static bool highestELIs64(ThreadContext *tc);
238
239 /** Returns the highest implemented exception level for the system of a
240 * specific thread context
241 */
242 static ExceptionLevel highestEL(ThreadContext *tc);
243
244 /** Returns the reset address if the highest implemented exception level for
245 * the system of a specific thread context is 64 bits (ARMv8)
246 */
247 static Addr resetAddr64(ThreadContext *tc);
248
249 /** Returns the supported physical address range in bits for the system of a
250 * specific thread context
251 */
252 static uint8_t physAddrRange(ThreadContext *tc);
253
254 /** Returns the physical address mask for the system of a specific thread
255 * context
256 */
257 static Addr physAddrMask(ThreadContext *tc);
258
259 /** Returns true if ASID is 16 bits for the system of a specific thread
260 * context while in AArch64 (ARMv8) */
261 static bool haveLargeAsid64(ThreadContext *tc);
262};
263
264class GenericArmSystem : public ArmSystem
265{
266 public:
267 typedef GenericArmSystemParams Params;
268 const Params *
269 params() const
270 {
271 return dynamic_cast<const Params *>(_params);
272 }
273
274 GenericArmSystem(Params *p) : ArmSystem(p) {};
275 virtual ~GenericArmSystem() {};
276
277 /**
278 * Initialise the system
279 */
280 virtual void initState();
281};
282
283#endif
231 /** Returns true if the system of a specific thread context implements the
232 * Security Extensions
233 */
234 static bool haveSecurity(ThreadContext *tc);
235
236 /** Returns true if the system of a specific thread context implements the
237 * virtualization Extensions
238 */
239 static bool haveVirtualization(ThreadContext *tc);
240
241 /** Returns true if the system of a specific thread context implements the
242 * Large Physical Address Extension
243 */
244 static bool haveLPAE(ThreadContext *tc);
245
246 /** Returns true if the register width of the highest implemented exception
247 * level for the system of a specific thread context is 64 bits (ARMv8)
248 */
249 static bool highestELIs64(ThreadContext *tc);
250
251 /** Returns the highest implemented exception level for the system of a
252 * specific thread context
253 */
254 static ExceptionLevel highestEL(ThreadContext *tc);
255
256 /** Returns the reset address if the highest implemented exception level for
257 * the system of a specific thread context is 64 bits (ARMv8)
258 */
259 static Addr resetAddr64(ThreadContext *tc);
260
261 /** Returns the supported physical address range in bits for the system of a
262 * specific thread context
263 */
264 static uint8_t physAddrRange(ThreadContext *tc);
265
266 /** Returns the physical address mask for the system of a specific thread
267 * context
268 */
269 static Addr physAddrMask(ThreadContext *tc);
270
271 /** Returns true if ASID is 16 bits for the system of a specific thread
272 * context while in AArch64 (ARMv8) */
273 static bool haveLargeAsid64(ThreadContext *tc);
274};
275
276class GenericArmSystem : public ArmSystem
277{
278 public:
279 typedef GenericArmSystemParams Params;
280 const Params *
281 params() const
282 {
283 return dynamic_cast<const Params *>(_params);
284 }
285
286 GenericArmSystem(Params *p) : ArmSystem(p) {};
287 virtual ~GenericArmSystem() {};
288
289 /**
290 * Initialise the system
291 */
292 virtual void initState();
293};
294
295#endif