BitUnion64(AA64MMFR1)

  BitUnion64(SCR)
      Bitfield<40> trndr;

Giacomo Travaglini has uploaded this change for review. ( https://gem5-review.googlesource.com/c/public/gem5/+/70939?usp=email ) Change subject: arch-arm: Implement FEAT_HCX ...................................................................... arch-arm: Implement FEAT_HCX This is just making the HCRX_EL2 register read/writable; trapping behaviour will be implemented with further extensions Change-Id: Id1ec42a754b7d999782edde3a8ec6c6099e3331e Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> --- M src/arch/arm/ArmSystem.py M src/arch/arm/regs/misc.cc M src/arch/arm/regs/misc.hh M src/arch/arm/regs/misc_types.hh 4 files changed, 32 insertions(+), 11 deletions(-) diff --git a/src/arch/arm/ArmSystem.py b/src/arch/arm/ArmSystem.py index 5e45fe4..d57fe80 100644 --- a/src/arch/arm/ArmSystem.py +++ b/src/arch/arm/ArmSystem.py @@ -92,6 +92,8 @@ "FEAT_RNG", "FEAT_RNG_TRAP", "FEAT_EVT", + # Armv8.7 + "FEAT_HCX", # Armv9.2 "FEAT_SME", # Optional in Armv9.2 # Others @@ -176,6 +178,8 @@ # Armv8.5 "FEAT_FLAGM2", "FEAT_EVT", + # Armv8.7 + "FEAT_HCX", # Armv9.2 "FEAT_SME", ] @@ -223,8 +227,14 @@ ] -class Armv92(Armv85): - extensions = Armv85.extensions + ["FEAT_SME"] +class Armv87(Armv85): + extensions = Armv85.extensions + [ + "FEAT_HCX", + ] + + +class Armv92(Armv87): + extensions = Armv87.extensions + ["FEAT_SME"] class ArmSystem(System): diff --git a/src/arch/arm/regs/misc.cc b/src/arch/arm/regs/misc.cc index c8ea1f2..375e01a 100644 --- a/src/arch/arm/regs/misc.cc +++ b/src/arch/arm/regs/misc.cc @@ -1600,6 +1600,18 @@ } Fault +faultHcrxEL2(const MiscRegLUTEntry &entry, + ThreadContext *tc, const MiscRegOp64 &inst) +{ + const SCR scr = tc->readMiscReg(MISCREG_SCR_EL3); + if (ArmSystem::haveEL(tc, EL3) && !scr.hxen) { + return inst.generateTrap(EL3); + } else { + return NoFault; + } +} + +Fault faultZcrEL1(const MiscRegLUTEntry &entry, ThreadContext *tc, const MiscRegOp64 &inst) { @@ -4081,6 +4093,7 @@ mmfr1_el1.vh = release->has(ArmExtension::FEAT_VHE) ? 0x1 : 0x0; mmfr1_el1.hpds = release->has(ArmExtension::FEAT_HPDS) ? 0x1 : 0x0; mmfr1_el1.pan = release->has(ArmExtension::FEAT_PAN) ? 0x1 : 0x0; + mmfr1_el1.hcx = release->has(ArmExtension::FEAT_HCX) ? 0x1 : 0x0; return mmfr1_el1; }()) .faultRead(EL0, faultIdst) @@ -4225,6 +4238,9 @@ InitReg(MISCREG_HCR_EL2) .hyp().mon() .mapsTo(MISCREG_HCR, MISCREG_HCR2); + InitReg(MISCREG_HCRX_EL2) + .hyp().mon() + .fault(EL2, faultHcrxEL2); InitReg(MISCREG_MDCR_EL2) .hyp().mon() .fault(EL2, faultDebugEL2) @@ -5645,11 +5661,6 @@ .warnNotFail() .fault(faultUnimplemented); - // HCX extension (unimplemented) - InitReg(MISCREG_HCRX_EL2) - .unimplemented() - .warnNotFail(); - // FGT extension (unimplemented) InitReg(MISCREG_HFGRTR_EL2) .unimplemented() diff --git a/src/arch/arm/regs/misc.hh b/src/arch/arm/regs/misc.hh index 429fcb5..cb03841 100644 --- a/src/arch/arm/regs/misc.hh +++ b/src/arch/arm/regs/misc.hh @@ -589,6 +589,7 @@ MISCREG_SCTLR_EL2, MISCREG_ACTLR_EL2, MISCREG_HCR_EL2, + MISCREG_HCRX_EL2, MISCREG_MDCR_EL2, MISCREG_CPTR_EL2, MISCREG_HSTR_EL2, @@ -1125,9 +1126,6 @@ MISCREG_VSESR_EL2, MISCREG_VDISR_EL2, - // HCX extension (unimplemented) - MISCREG_HCRX_EL2, - // FGT extension (unimplemented) MISCREG_HFGRTR_EL2, MISCREG_HFGWTR_EL2, @@ -2272,6 +2270,7 @@ "sctlr_el2", "actlr_el2", "hcr_el2", + "hcrx_el2", "mdcr_el2", "cptr_el2", "hstr_el2", @@ -2785,7 +2784,6 @@ "disr_el1", "vsesr_el2", "vdisr_el2", - "hcrx_el2", "hfgrtr_el2", "hfgwtr_el2", diff --git a/src/arch/arm/regs/misc_types.hh b/src/arch/arm/regs/misc_types.hh index b7a1207..d8391d9 100644 --- a/src/arch/arm/regs/misc_types.hh +++ b/src/arch/arm/regs/misc_types.hh @@ -157,6 +157,7 @@ EndBitUnion(AA64MMFR0) BitUnion64(AA64MMFR1) + Bitfield<43, 40> hcx; Bitfield<31, 28> xnx; Bitfield<27, 24> specsei; Bitfield<23, 20> pan; @@ -360,6 +361,7 @@ BitUnion64(SCR) Bitfield<40> trndr; + Bitfield<38> hxen; Bitfield<21> fien; Bitfield<20> nmea; Bitfield<19> ease; -- To view, visit https://gem5-review.googlesource.com/c/public/gem5/+/70939?usp=email To unsubscribe, or for help writing mail filters, visit https://gem5-review.googlesource.com/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: public/gem5 Gerrit-Branch: develop Gerrit-Change-Id: Id1ec42a754b7d999782edde3a8ec6c6099e3331e Gerrit-Change-Number: 70939 Gerrit-PatchSet: 1 Gerrit-Owner: Giacomo Travaglini <giacomo.travaglini@arm.com>