diff options
Diffstat (limited to 'src/arch/arm/table_walker.cc')
| -rw-r--r-- | src/arch/arm/table_walker.cc | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/src/arch/arm/table_walker.cc b/src/arch/arm/table_walker.cc index 3c79e43ac..26a07d70e 100644 --- a/src/arch/arm/table_walker.cc +++ b/src/arch/arm/table_walker.cc @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010, 2012-2017 ARM Limited + * Copyright (c) 2010, 2012-2018 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -739,9 +739,9 @@ TableWalker::processWalkAArch64() DPRINTF(TLB, "Beginning table walk for address %#llx, TCR: %#llx\n", currState->vaddr_tainted, currState->tcr); - static const GrainSize GrainMapDefault[] = + static const GrainSize GrainMap_tg0[] = { Grain4KB, Grain64KB, Grain16KB, ReservedGrain }; - static const GrainSize GrainMap_EL1_tg1[] = + static const GrainSize GrainMap_tg1[] = { ReservedGrain, Grain16KB, Grain4KB, Grain64KB }; statWalkWaitTime.sample(curTick() - currState->startTime); @@ -761,7 +761,7 @@ TableWalker::processWalkAArch64() DPRINTF(TLB, " - Selecting VTTBR0 (AArch64 stage 2)\n"); ttbr = currState->tc->readMiscReg(MISCREG_VTTBR_EL2); tsz = 64 - currState->vtcr.t0sz64; - tg = GrainMapDefault[currState->vtcr.tg0]; + tg = GrainMap_tg0[currState->vtcr.tg0]; // ARM DDI 0487A.f D7-2148 // The starting level of stage 2 translation depends on // VTCR_EL2.SL0 and VTCR_EL2.TG0 @@ -781,7 +781,7 @@ TableWalker::processWalkAArch64() DPRINTF(TLB, " - Selecting TTBR0 (AArch64)\n"); ttbr = currState->tc->readMiscReg(MISCREG_TTBR0_EL1); tsz = adjustTableSizeAArch64(64 - currState->tcr.t0sz); - tg = GrainMapDefault[currState->tcr.tg0]; + tg = GrainMap_tg0[currState->tcr.tg0]; if (bits(currState->vaddr, 63, tsz) != 0x0 || currState->tcr.epd0) fault = true; @@ -790,7 +790,7 @@ TableWalker::processWalkAArch64() DPRINTF(TLB, " - Selecting TTBR1 (AArch64)\n"); ttbr = currState->tc->readMiscReg(MISCREG_TTBR1_EL1); tsz = adjustTableSizeAArch64(64 - currState->tcr.t1sz); - tg = GrainMap_EL1_tg1[currState->tcr.tg1]; + tg = GrainMap_tg1[currState->tcr.tg1]; if (bits(currState->vaddr, 63, tsz) != mask(64-tsz) || currState->tcr.epd1) fault = true; @@ -802,16 +802,37 @@ TableWalker::processWalkAArch64() ps = currState->tcr.ips; break; case EL2: + switch(bits(currState->vaddr, 63,48)) { + case 0: + DPRINTF(TLB, " - Selecting TTBR0 (AArch64)\n"); + ttbr = currState->tc->readMiscReg(MISCREG_TTBR0_EL2); + tsz = adjustTableSizeAArch64(64 - currState->tcr.t0sz); + tg = GrainMap_tg0[currState->tcr.tg0]; + break; + + case 0xffff: + DPRINTF(TLB, " - Selecting TTBR1 (AArch64)\n"); + ttbr = currState->tc->readMiscReg(MISCREG_TTBR1_EL2); + tsz = adjustTableSizeAArch64(64 - currState->tcr.t1sz); + tg = GrainMap_tg1[currState->tcr.tg1]; + if (bits(currState->vaddr, 63, tsz) != mask(64-tsz) || + currState->tcr.epd1 || !currState->hcr.e2h) + fault = true; + break; + + default: + // invalid addr if top two bytes are not all 0s + fault = true; + } + ps = currState->tcr.ips; + break; case EL3: switch(bits(currState->vaddr, 63,48)) { case 0: DPRINTF(TLB, " - Selecting TTBR0 (AArch64)\n"); - if (currState->el == EL2) - ttbr = currState->tc->readMiscReg(MISCREG_TTBR0_EL2); - else - ttbr = currState->tc->readMiscReg(MISCREG_TTBR0_EL3); + ttbr = currState->tc->readMiscReg(MISCREG_TTBR0_EL3); tsz = adjustTableSizeAArch64(64 - currState->tcr.t0sz); - tg = GrainMapDefault[currState->tcr.tg0]; + tg = GrainMap_tg0[currState->tcr.tg0]; break; default: // invalid addr if top two bytes are not all 0s |