system.cc (9385:25ebe5e13a07) system.cc (10037:5cac77888310)
1/*
1/*
2 * Copyright (c) 2010 ARM Limited
2 * Copyright (c) 2010, 2012-2013 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

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43#include <iostream>
44
45#include "arch/arm/system.hh"
46#include "base/loader/object_file.hh"
47#include "base/loader/symtab.hh"
48#include "cpu/thread_context.hh"
49#include "mem/physical.hh"
50#include "mem/fs_translating_port_proxy.hh"
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

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43#include <iostream>
44
45#include "arch/arm/system.hh"
46#include "base/loader/object_file.hh"
47#include "base/loader/symtab.hh"
48#include "cpu/thread_context.hh"
49#include "mem/physical.hh"
50#include "mem/fs_translating_port_proxy.hh"
51#include "sim/full_system.hh"
51
52using namespace std;
53using namespace Linux;
54
55ArmSystem::ArmSystem(Params *p)
52
53using namespace std;
54using namespace Linux;
55
56ArmSystem::ArmSystem(Params *p)
56 : System(p), bootldr(NULL), multiProc(p->multi_proc)
57 : System(p), bootldr(NULL), _haveSecurity(p->have_security),
58 _haveLPAE(p->have_lpae),
59 _haveVirtualization(p->have_virtualization),
60 _haveGenericTimer(p->have_generic_timer),
61 _highestELIs64(p->highest_el_is_64),
62 _resetAddr64(p->reset_addr_64),
63 _physAddrRange64(p->phys_addr_range_64),
64 _haveLargeAsid64(p->have_large_asid_64),
65 multiProc(p->multi_proc)
57{
66{
67 // Check if the physical address range is valid
68 if (_highestELIs64 && (
69 _physAddrRange64 < 32 ||
70 _physAddrRange64 > 48 ||
71 (_physAddrRange64 % 4 != 0 && _physAddrRange64 != 42))) {
72 fatal("Invalid physical address range (%d)\n", _physAddrRange64);
73 }
74
58 if (p->boot_loader != "") {
59 bootldr = createObjectFile(p->boot_loader);
60
61 if (!bootldr)
62 fatal("Could not read bootloader: %s\n", p->boot_loader);
63
75 if (p->boot_loader != "") {
76 bootldr = createObjectFile(p->boot_loader);
77
78 if (!bootldr)
79 fatal("Could not read bootloader: %s\n", p->boot_loader);
80
81 if ((bootldr->getArch() == ObjectFile::Arm64) && !_highestELIs64) {
82 warn("Highest ARM exception-level set to AArch32 but bootloader "
83 "is for AArch64. Assuming you wanted these to match.\n");
84 _highestELIs64 = true;
85 } else if ((bootldr->getArch() == ObjectFile::Arm) && _highestELIs64) {
86 warn("Highest ARM exception-level set to AArch64 but bootloader "
87 "is for AArch32. Assuming you wanted these to match.\n");
88 _highestELIs64 = false;
89 }
90
64 bootldr->loadGlobalSymbols(debugSymbolTable);
65
66 }
67 debugPrintkEvent = addKernelFuncEvent<DebugPrintkEvent>("dprintk");
68}
69
70void
71ArmSystem::initState()

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76 // Call the initialisation of the super class
77 System::initState();
78
79 const Params* p = params();
80
81 if (bootldr) {
82 bootldr->loadSections(physProxy);
83
91 bootldr->loadGlobalSymbols(debugSymbolTable);
92
93 }
94 debugPrintkEvent = addKernelFuncEvent<DebugPrintkEvent>("dprintk");
95}
96
97void
98ArmSystem::initState()

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103 // Call the initialisation of the super class
104 System::initState();
105
106 const Params* p = params();
107
108 if (bootldr) {
109 bootldr->loadSections(physProxy);
110
84 uint8_t jump_to_bl[] =
111 uint8_t jump_to_bl_32[] =
85 {
112 {
86 0x07, 0xf0, 0xa0, 0xe1 // branch to r7
113 0x07, 0xf0, 0xa0, 0xe1 // branch to r7 in aarch32
87 };
114 };
88 physProxy.writeBlob(0x0, jump_to_bl, sizeof(jump_to_bl));
89
115
116 uint8_t jump_to_bl_64[] =
117 {
118 0xe0, 0x00, 0x1f, 0xd6 // instruction "br x7" in aarch64
119 };
120
121 // write the jump to branch table into address 0
122 if (!_highestELIs64)
123 physProxy.writeBlob(0x0, jump_to_bl_32, sizeof(jump_to_bl_32));
124 else
125 physProxy.writeBlob(0x0, jump_to_bl_64, sizeof(jump_to_bl_64));
126
90 inform("Using bootloader at address %#x\n", bootldr->entryPoint());
91
92 // Put the address of the boot loader into r7 so we know
93 // where to branch to after the reset fault
94 // All other values needed by the boot loader to know what to do
95 if (!p->gic_cpu_addr || !p->flags_addr)
96 fatal("gic_cpu_addr && flags_addr must be set with bootloader\n");
97
98 for (int i = 0; i < threadContexts.size(); i++) {
127 inform("Using bootloader at address %#x\n", bootldr->entryPoint());
128
129 // Put the address of the boot loader into r7 so we know
130 // where to branch to after the reset fault
131 // All other values needed by the boot loader to know what to do
132 if (!p->gic_cpu_addr || !p->flags_addr)
133 fatal("gic_cpu_addr && flags_addr must be set with bootloader\n");
134
135 for (int i = 0; i < threadContexts.size(); i++) {
99 threadContexts[i]->setIntReg(3, kernelEntry & loadAddrMask);
136 if (!_highestELIs64)
137 threadContexts[i]->setIntReg(3, (kernelEntry & loadAddrMask) +
138 loadAddrOffset);
100 threadContexts[i]->setIntReg(4, params()->gic_cpu_addr);
101 threadContexts[i]->setIntReg(5, params()->flags_addr);
102 threadContexts[i]->setIntReg(7, bootldr->entryPoint());
103 }
139 threadContexts[i]->setIntReg(4, params()->gic_cpu_addr);
140 threadContexts[i]->setIntReg(5, params()->flags_addr);
141 threadContexts[i]->setIntReg(7, bootldr->entryPoint());
142 }
143 inform("Using kernel entry physical address at %#x\n",
144 (kernelEntry & loadAddrMask) + loadAddrOffset);
104 } else {
105 // Set the initial PC to be at start of the kernel code
145 } else {
146 // Set the initial PC to be at start of the kernel code
106 threadContexts[0]->pcState(kernelEntry & loadAddrMask);
147 if (!_highestELIs64)
148 threadContexts[0]->pcState((kernelEntry & loadAddrMask) +
149 loadAddrOffset);
107 }
108}
109
150 }
151}
152
153GenericTimer::ArchTimer *
154ArmSystem::getArchTimer(int cpu_id) const
155{
156 if (_genericTimer) {
157 return _genericTimer->getArchTimer(cpu_id);
158 }
159 return NULL;
160}
161
162GenericTimer::SystemCounter *
163ArmSystem::getSystemCounter() const
164{
165 if (_genericTimer) {
166 return _genericTimer->getSystemCounter();
167 }
168 return NULL;
169}
170
171bool
172ArmSystem::haveSecurity(ThreadContext *tc)
173{
174 if (!FullSystem)
175 return false;
176
177 ArmSystem *a_sys = dynamic_cast<ArmSystem *>(tc->getSystemPtr());
178 assert(a_sys);
179 return a_sys->haveSecurity();
180}
181
182
110ArmSystem::~ArmSystem()
111{
112 if (debugPrintkEvent)
113 delete debugPrintkEvent;
114}
115
183ArmSystem::~ArmSystem()
184{
185 if (debugPrintkEvent)
186 delete debugPrintkEvent;
187}
188
189bool
190ArmSystem::haveLPAE(ThreadContext *tc)
191{
192 if (!FullSystem)
193 return false;
116
194
195 ArmSystem *a_sys = dynamic_cast<ArmSystem *>(tc->getSystemPtr());
196 assert(a_sys);
197 return a_sys->haveLPAE();
198}
199
200bool
201ArmSystem::haveVirtualization(ThreadContext *tc)
202{
203 if (!FullSystem)
204 return false;
205
206 ArmSystem *a_sys = dynamic_cast<ArmSystem *>(tc->getSystemPtr());
207 assert(a_sys);
208 return a_sys->haveVirtualization();
209}
210
211bool
212ArmSystem::highestELIs64(ThreadContext *tc)
213{
214 return dynamic_cast<ArmSystem *>(tc->getSystemPtr())->highestELIs64();
215}
216
217ExceptionLevel
218ArmSystem::highestEL(ThreadContext *tc)
219{
220 return dynamic_cast<ArmSystem *>(tc->getSystemPtr())->highestEL();
221}
222
223Addr
224ArmSystem::resetAddr64(ThreadContext *tc)
225{
226 return dynamic_cast<ArmSystem *>(tc->getSystemPtr())->resetAddr64();
227}
228
229uint8_t
230ArmSystem::physAddrRange(ThreadContext *tc)
231{
232 return dynamic_cast<ArmSystem *>(tc->getSystemPtr())->physAddrRange();
233}
234
235Addr
236ArmSystem::physAddrMask(ThreadContext *tc)
237{
238 return dynamic_cast<ArmSystem *>(tc->getSystemPtr())->physAddrMask();
239}
240
241bool
242ArmSystem::haveLargeAsid64(ThreadContext *tc)
243{
244 return dynamic_cast<ArmSystem *>(tc->getSystemPtr())->haveLargeAsid64();
245}
117ArmSystem *
118ArmSystemParams::create()
119{
120 return new ArmSystem(this);
121}
246ArmSystem *
247ArmSystemParams::create()
248{
249 return new ArmSystem(this);
250}