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41 #include "arch/arm/fs_workload.hh"
43 #include "arch/arm/faults.hh"
44 #include "base/loader/object_file.hh"
45 #include "base/loader/symtab.hh"
46 #include "cpu/thread_context.hh"
47 #include "dev/arm/gic_v2.hh"
48 #include "kern/system_events.hh"
49 #include "params/ArmFsWorkload.hh"
55 SkipFunc::returnFromFuncIn(ThreadContext
*tc
)
57 PCState newPC
= tc
->pcState();
59 newPC
.set(tc
->readIntReg(INTREG_X30
));
61 newPC
.set(tc
->readIntReg(ReturnAddressReg
) & ~ULL(1));
64 CheckerCPU
*checker
= tc
->getCheckerCpuPtr();
66 tc
->pcStateNoRecord(newPC
);
72 FsWorkload::FsWorkload(const Params
&p
) : KernelWorkload(p
)
75 kernelEntry
= (kernelObj
->entryPoint() & loadAddrMask()) +
79 bootLoaders
.reserve(p
.boot_loader
.size());
80 for (const auto &bl
: p
.boot_loader
) {
81 std::unique_ptr
<Loader::ObjectFile
> bl_obj
;
82 bl_obj
.reset(Loader::createObjectFile(bl
));
84 fatal_if(!bl_obj
, "Could not read bootloader: %s", bl
);
85 bootLoaders
.emplace_back(std::move(bl_obj
));
88 bootldr
= getBootLoader(kernelObj
);
90 fatal_if(!bootLoaders
.empty() && !bootldr
,
91 "Can't find a matching boot loader / kernel combination!");
94 Loader::debugSymbolTable
.insert(*bootldr
->symtab().globals());
98 FsWorkload::initState()
100 KernelWorkload::initState();
102 // Reset CP15?? What does that mean -- ali
106 for (auto *tc
: system
->threads
) {
111 auto *arm_sys
= dynamic_cast<ArmSystem
*>(system
);
115 arm_sys
->getGIC()->supportsVersion(BaseGic::GicVersion::GIC_V2
);
116 bootldr
->buildImage().write(system
->physProxy
);
118 inform("Using bootloader at address %#x", bootldr
->entryPoint());
120 // Put the address of the boot loader into r7 so we know
121 // where to branch to after the reset fault
122 // All other values needed by the boot loader to know what to do
123 fatal_if(!arm_sys
->params().flags_addr
,
124 "flags_addr must be set with bootloader");
126 fatal_if(!arm_sys
->params().gic_cpu_addr
&& is_gic_v2
,
127 "gic_cpu_addr must be set with bootloader");
129 for (auto *tc
: arm_sys
->threads
) {
130 if (!arm_sys
->highestELIs64())
131 tc
->setIntReg(3, kernelEntry
);
133 tc
->setIntReg(4, arm_sys
->params().gic_cpu_addr
);
134 tc
->setIntReg(5, arm_sys
->params().flags_addr
);
136 inform("Using kernel entry physical address at %#x\n", kernelEntry
);
138 // Set the initial PC to be at start of the kernel code
139 if (!arm_sys
->highestELIs64())
140 arm_sys
->threads
[0]->pcState(kernelObj
->entryPoint());
145 FsWorkload::getBootLoader(Loader::ObjectFile
*const obj
)
148 for (auto &bl
: bootLoaders
) {
149 if (bl
->getArch() == obj
->getArch())
152 } else if (!bootLoaders
.empty()) {
153 return bootLoaders
[0].get();
159 } // namespace ArmISA