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43 #ifndef __ARCH_ARM_SYSTEM_HH__
44 #define __ARCH_ARM_SYSTEM_HH__
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"
59 class ArmSystem : public System
63 * PC based event to skip the dprink() call and emulate its
66 Linux::DebugPrintkEvent *debugPrintkEvent;
69 std::vector<std::unique_ptr<ObjectFile>> bootLoaders;
72 * Pointer to the bootloader object
77 * True if this system implements the Security Extensions
79 const bool _haveSecurity;
82 * True if this system implements the Large Physical Address Extension
87 * True if this system implements the virtualization Extensions
89 const bool _haveVirtualization;
92 * Pointer to the Generic Timer wrapper.
94 GenericTimer *_genericTimer;
97 * True if the register width of the highest implemented exception level is
103 * Reset address if the highest implemented exception level is 64 bits
106 const Addr _resetAddr64;
109 * Supported physical address range in bits if the highest implemented
110 * exception level is 64 bits (ARMv8)
112 const uint8_t _physAddrRange64;
115 * True if ASID is 16 bits in AArch64 (ARMv8)
117 const bool _haveLargeAsid64;
121 * Get a boot loader that matches the kernel.
123 * @param obj Kernel binary
124 * @return Pointer to boot loader ObjectFile or nullptr if there
125 * is no matching boot loader.
127 ObjectFile *getBootLoader(ObjectFile *const obj);
130 typedef ArmSystemParams Params;
134 return dynamic_cast<const Params *>(_params);
137 ArmSystem(Params *p);
141 * Initialise the system
143 virtual void initState();
145 virtual Addr fixFuncEventAddr(Addr addr)
147 // Remove the low bit that thumb symbols have set
148 // but that aren't actually odd aligned
154 /** true if this a multiprocessor system */
157 /** Returns true if this system implements the Security Extensions */
158 bool haveSecurity() const { return _haveSecurity; }
160 /** Returns true if this system implements the Large Physical Address
162 bool haveLPAE() const { return _haveLPAE; }
164 /** Returns true if this system implements the virtualization
167 bool haveVirtualization() const { return _haveVirtualization; }
169 /** Sets the pointer to the Generic Timer. */
170 void setGenericTimer(GenericTimer *generic_timer)
172 _genericTimer = generic_timer;
175 /** Get a pointer to the system's generic timer model */
176 GenericTimer *getGenericTimer() const { return _genericTimer; }
178 /** Returns true if the register width of the highest implemented exception
179 * level is 64 bits (ARMv8) */
180 bool highestELIs64() const { return _highestELIs64; }
182 /** Returns the highest implemented exception level */
183 ExceptionLevel highestEL() const
187 // @todo: uncomment this to enable Virtualization
188 // if (_haveVirtualization)
193 /** Returns the reset address if the highest implemented exception level is
195 Addr resetAddr64() const { return _resetAddr64; }
197 /** Returns true if ASID is 16 bits in AArch64 (ARMv8) */
198 bool haveLargeAsid64() const { return _haveLargeAsid64; }
200 /** Returns the supported physical address range in bits if the highest
201 * implemented exception level is 64 bits (ARMv8) */
202 uint8_t physAddrRange64() const { return _physAddrRange64; }
204 /** Returns the supported physical address range in bits */
205 uint8_t physAddrRange() const
208 return _physAddrRange64;
214 /** Returns the physical address mask */
215 Addr physAddrMask() const
217 return mask(physAddrRange());
220 /** Returns true if the system of a specific thread context implements the
221 * Security Extensions
223 static bool haveSecurity(ThreadContext *tc);
225 /** Returns true if the system of a specific thread context implements the
226 * virtualization Extensions
228 static bool haveVirtualization(ThreadContext *tc);
230 /** Returns true if the system of a specific thread context implements the
231 * Large Physical Address Extension
233 static bool haveLPAE(ThreadContext *tc);
235 /** Returns true if the register width of the highest implemented exception
236 * level for the system of a specific thread context is 64 bits (ARMv8)
238 static bool highestELIs64(ThreadContext *tc);
240 /** Returns the highest implemented exception level for the system of a
241 * specific thread context
243 static ExceptionLevel highestEL(ThreadContext *tc);
245 /** Returns the reset address if the highest implemented exception level for
246 * the system of a specific thread context is 64 bits (ARMv8)
248 static Addr resetAddr64(ThreadContext *tc);
250 /** Returns the supported physical address range in bits for the system of a
251 * specific thread context
253 static uint8_t physAddrRange(ThreadContext *tc);
255 /** Returns the physical address mask for the system of a specific thread
258 static Addr physAddrMask(ThreadContext *tc);
260 /** Returns true if ASID is 16 bits for the system of a specific thread
261 * context while in AArch64 (ARMv8) */
262 static bool haveLargeAsid64(ThreadContext *tc);
265 class GenericArmSystem : public ArmSystem
268 typedef GenericArmSystemParams Params;
272 return dynamic_cast<const Params *>(_params);
275 GenericArmSystem(Params *p) : ArmSystem(p) {};
276 virtual ~GenericArmSystem() {};
279 * Initialise the system
281 virtual void initState();