gem5  v21.1.0.2
mmu.hh
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37 
38 #ifndef __ARCH_RISCV_MMU_HH__
39 #define __ARCH_RISCV_MMU_HH__
40 
41 #include "arch/generic/mmu.hh"
42 #include "arch/riscv/isa.hh"
44 #include "arch/riscv/tlb.hh"
45 
46 #include "params/RiscvMMU.hh"
47 
48 namespace gem5
49 {
50 
51 namespace RiscvISA {
52 
53 class MMU : public BaseMMU
54 {
55  public:
57 
58  MMU(const RiscvMMUParams &p)
59  : BaseMMU(p), pma(p.pma_checker)
60  {}
61 
64  {
65  return static_cast<TLB*>(dtb)->getMemPriv(tc, mode);
66  }
67 
68  Walker *
70  {
71  return static_cast<TLB*>(dtb)->getWalker();
72  }
73 
74  void
75  takeOverFrom(BaseMMU *old_mmu) override
76  {
77  MMU *ommu = dynamic_cast<MMU*>(old_mmu);
79  pma->takeOverFrom(ommu->pma);
80 
81  }
82 
83  PMP *
85  {
86  return static_cast<TLB*>(dtb)->pmp;
87  }
88 };
89 
90 } // namespace RiscvISA
91 } // namespace gem5
92 
93 #endif // __ARCH_RISCV_MMU_HH__
gem5::PMP
This class helps to implement RISCV's physical memory protection (pmp) primitive.
Definition: pmp.hh:53
gem5::RiscvISA::MMU::getMemPriv
PrivilegeMode getMemPriv(ThreadContext *tc, BaseMMU::Mode mode)
Definition: mmu.hh:63
gem5::BaseMMU::dtb
BaseTLB * dtb
Definition: mmu.hh:120
gem5::BaseMMU::Mode
Mode
Definition: mmu.hh:53
gem5::RiscvISA::MMU::takeOverFrom
void takeOverFrom(BaseMMU *old_mmu) override
Definition: mmu.hh:75
gem5::RiscvISA::MMU
Definition: mmu.hh:53
gem5::RiscvISA::MMU::getDataWalker
Walker * getDataWalker()
Definition: mmu.hh:69
gem5::RiscvISA::PrivilegeMode
PrivilegeMode
Definition: isa.hh:52
pma_checker.hh
gem5::RiscvISA::MMU::MMU
MMU(const RiscvMMUParams &p)
Definition: mmu.hh:58
gem5::PMAChecker
Based on the RISC-V ISA privileged specifications V1.11, there is no implementation guidelines on the...
Definition: pma_checker.hh:60
isa.hh
gem5::BaseMMU
Definition: mmu.hh:50
gem5::ThreadContext
ThreadContext is the external interface to all thread state for anything outside of the CPU.
Definition: thread_context.hh:93
gem5::RiscvISA::MMU::getPMP
PMP * getPMP()
Definition: mmu.hh:84
tlb.hh
mmu.hh
gem5::RiscvISA::p
Bitfield< 0 > p
Definition: pra_constants.hh:326
gem5::RiscvISA::TLB
Definition: tlb.hh:59
gem5::RiscvISA::MMU::pma
PMAChecker * pma
Definition: mmu.hh:56
gem5::RiscvISA::Walker
Definition: pagetable_walker.hh:63
gem5::RiscvISA::mode
mode
Definition: pagetable.hh:46
gem5::PMAChecker::takeOverFrom
void takeOverFrom(PMAChecker *old)
Definition: pma_checker.cc:89
gem5
Reference material can be found at the JEDEC website: UFS standard http://www.jedec....
Definition: decoder.cc:40
gem5::BaseMMU::takeOverFrom
virtual void takeOverFrom(BaseMMU *old_mmu)
Definition: mmu.cc:93

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