1/*
2 * Copyright (c) 2010 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

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50#include "mem/fs_translating_port_proxy.hh"
51
52using namespace std;
53using namespace Linux;
54
55ArmSystem::ArmSystem(Params *p)
56 : System(p), bootldr(NULL)
57{
58 if ((p->boot_loader == "") != (p->boot_loader_mem == NULL))
59 fatal("If boot_loader is specifed, memory to load it must be also.\n");
60
61 if (p->boot_loader != "") {
62 bootldr = createObjectFile(p->boot_loader);
63
64 if (!bootldr)
65 fatal("Could not read bootloader: %s\n", p->boot_loader);
66
67 bootldr->loadGlobalSymbols(debugSymbolTable);
68
69 }
70 debugPrintkEvent = addKernelFuncEvent<DebugPrintkEvent>("dprintk");
71}
72
73void
74ArmSystem::initState()
75{
76 // Moved from the constructor to here since it relies on the
77 // address map being resolved in the interconnect
78
79 // Call the initialisation of the super class
80 System::initState();
81
82 const Params* p = params();
83
71 if ((p->boot_loader == "") != (p->boot_loader_mem == NULL))
72 fatal("If boot_loader is specifed, memory to load it must be also.\n");
73
74 if (p->boot_loader != "") {
75 bootldr = createObjectFile(p->boot_loader);
76
77 if (!bootldr)
78 fatal("Could not read bootloader: %s\n", p->boot_loader);
79
84 if (bootldr) {
85 bootldr->loadSections(physProxy);
81 bootldr->loadGlobalSymbols(debugSymbolTable);
86
87 uint8_t jump_to_bl[] =
88 {
89 0x07, 0xf0, 0xa0, 0xe1 // branch to r7
90 };
91 physProxy.writeBlob(0x0, jump_to_bl, sizeof(jump_to_bl));
92
93 inform("Using bootloader at address %#x\n", bootldr->entryPoint());
90 }
94
92 if (bootldr) {
95 // Put the address of the boot loader into r7 so we know
96 // where to branch to after the reset fault
97 // All other values needed by the boot loader to know what to do
98 if (!p->gic_cpu_addr || !p->flags_addr)
99 fatal("gic_cpu_addr && flags_addr must be set with bootloader\n");
100
101 for (int i = 0; i < threadContexts.size(); i++) {
102 threadContexts[i]->setIntReg(3, kernelEntry & loadAddrMask);
103 threadContexts[i]->setIntReg(4, params()->gic_cpu_addr);
104 threadContexts[i]->setIntReg(5, params()->flags_addr);
105 threadContexts[i]->setIntReg(7, bootldr->entryPoint());
106 }
102 if (!p->gic_cpu_addr || !p->flags_addr)
103 fatal("gic_cpu_addr && flags_addr must be set with bootloader\n");
107 } else {
108 // Set the initial PC to be at start of the kernel code
109 threadContexts[0]->pcState(kernelEntry & loadAddrMask);
110 }
111
112 for (int i = 0; i < threadContexts.size(); i++) {
113 if (p->midr_regval) {
114 threadContexts[i]->setMiscReg(ArmISA::MISCREG_MIDR,
115 p->midr_regval);
116 }
117 }
114
115 debugPrintkEvent = addKernelFuncEvent<DebugPrintkEvent>("dprintk");
118}
119
120ArmSystem::~ArmSystem()
121{
122 if (debugPrintkEvent)
123 delete debugPrintkEvent;
124}
125
126
127ArmSystem *
128ArmSystemParams::create()
129{
130 return new ArmSystem(this);
131}