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arm: audit SCTLR

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Change-Id: I814f1431a5f754f75721c9ac51171f860a714d24
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
This commit is contained in:
Curtis Dunham 2016-12-19 11:03:27 -06:00
parent 7ddb55a5f2
commit 9cf6bc444b
1 changed files with 10 additions and 15 deletions
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25
src/arch/arm/isa.cc
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@ -211,9 +211,7 @@ ISA::ISA(Params *p)
pmu(p->pmu),
lookUpMiscReg(NUM_MISCREGS, {0,0})
{
SCTLR sctlr;
sctlr = 0;
miscRegs[MISCREG_SCTLR_RST] = sctlr;
miscRegs[MISCREG_SCTLR_RST] = 0;
// Hook up a dummy device if we haven't been configured with a
// real PMU. By using a dummy device, we don't need to check that
@ -432,12 +430,14 @@ ISA::clear64(const ArmISAParams *p)
// Initialize other control registers
miscRegs[MISCREG_MPIDR_EL1] = 0x80000000;
if (haveSecurity) {
miscRegs[MISCREG_SCTLR_EL3] = 0x30c50870;
miscRegs[MISCREG_SCTLR_EL3] = 0x30c50830;
miscRegs[MISCREG_SCR_EL3] = 0x00000030; // RES1 fields
} else if (haveVirtualization) {
miscRegs[MISCREG_SCTLR_EL2] = 0x30c50870;
// also MISCREG_SCTLR_EL2 (by mapping)
miscRegs[MISCREG_HSCTLR] = 0x30c50830;
} else {
miscRegs[MISCREG_SCTLR_EL1] = 0x30c50870;
// also MISCREG_SCTLR_EL1 (by mapping)
miscRegs[MISCREG_SCTLR_NS] = 0x30d00800 | 0x00050030; // RES1 | init
// Always non-secure
miscRegs[MISCREG_SCR_EL3] = 1;
}
@ -491,12 +491,9 @@ ISA::readMiscRegNoEffect(int misc_reg) const
// registers are left unchanged
MiscReg val;
if (lookUpMiscReg[flat_idx].lower == 0 || flat_idx == MISCREG_SPSR
|| flat_idx == MISCREG_SCTLR_EL1) {
if (lookUpMiscReg[flat_idx].lower == 0 || flat_idx == MISCREG_SPSR) {
if (flat_idx == MISCREG_SPSR)
flat_idx = flattenMiscIndex(MISCREG_SPSR);
if (flat_idx == MISCREG_SCTLR_EL1)
flat_idx = flattenMiscIndex(MISCREG_SCTLR);
val = miscRegs[flat_idx];
} else
if (lookUpMiscReg[flat_idx].upper > 0)
@ -779,11 +776,11 @@ ISA::readMiscReg(int misc_reg, ThreadContext *tc)
case MISCREG_SCTLR:
return (readMiscRegNoEffect(misc_reg) & 0x72DD39FF) | 0x00C00818;
case MISCREG_SCTLR_EL1:
return (readMiscRegNoEffect(misc_reg) & 0x37DDDBFF) | 0x30D00800;
return (readMiscRegNoEffect(misc_reg) & 0x37DDDBBF) | 0x30D00800;
case MISCREG_SCTLR_EL2:
case MISCREG_SCTLR_EL3:
return (readMiscRegNoEffect(misc_reg) & 0x32CD183F) | 0x30C50830;
case MISCREG_HSCTLR:
return readMiscRegNoEffect(MISCREG_HSCTLR);
return (readMiscRegNoEffect(misc_reg) & 0x32CD183F) | 0x30C50830;
// Generic Timer registers
case MISCREG_CNTFRQ ... MISCREG_CNTHP_CTL:
@ -817,8 +814,6 @@ ISA::setMiscRegNoEffect(int misc_reg, const MiscReg &val)
} else {
if (flat_idx == MISCREG_SPSR)
flat_idx = flattenMiscIndex(MISCREG_SPSR);
else if (flat_idx == MISCREG_SCTLR_EL1)
flat_idx = flattenMiscIndex(MISCREG_SCTLR);
else
flat_idx = (lookUpMiscReg[flat_idx].lower > 0) ?
lookUpMiscReg[flat_idx].lower : flat_idx;