diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2015-08-25 15:45:08 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2015-08-25 15:45:08 +0100 |
| commit | 2a47df953202e1f226aa045ea974427c4540a167 (patch) | |
| tree | e36df504d10ac85ad64526cae8e7ecdeb22d46dc /target-arm/helper.c | |
| parent | d0a2cbceb2aa20d64d53e1c20c7d26a78ade8382 (diff) | |
target-arm: Wire up AArch64 EL2 and EL3 address translation ops
Wire up the AArch64 EL2 and EL3 address translation operations
(AT S12E1*, AT S12E0*, AT S1E2*, AT S1E3*), and correct some
errors in the ats_write64() function in previously unused code
that would have done the wrong kind of lookup for accesses from
EL3 when SCR.NS==0.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1437751263-21913-3-git-send-email-peter.maydell@linaro.org
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 86d0baf2c0..8603660d4f 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -1844,6 +1844,14 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) A32_BANKED_CURRENT_REG_SET(env, par, par64); } +static CPAccessResult at_s1e2_access(CPUARMState *env, const ARMCPRegInfo *ri) +{ + if (arm_current_el(env) == 3 && !(env->cp15.scr_el3 & SCR_NS)) { + return CP_ACCESS_TRAP; + } + return CP_ACCESS_OK; +} + static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value) { @@ -1871,10 +1879,10 @@ static void ats_write64(CPUARMState *env, const ARMCPRegInfo *ri, mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S1NSE0; break; case 4: /* AT S12E1R, AT S12E1W */ - mmu_idx = ARMMMUIdx_S12NSE1; + mmu_idx = secure ? ARMMMUIdx_S1SE1 : ARMMMUIdx_S12NSE1; break; case 6: /* AT S12E0R, AT S12E0W */ - mmu_idx = ARMMMUIdx_S12NSE0; + mmu_idx = secure ? ARMMMUIdx_S1SE0 : ARMMMUIdx_S12NSE0; break; default: g_assert_not_reached(); @@ -2746,6 +2754,25 @@ static const ARMCPRegInfo v8_cp_reginfo[] = { { .name = "AT_S1E0W", .state = ARM_CP_STATE_AA64, .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 3, .access = PL1_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, + { .name = "AT_S12E1R", .state = ARM_CP_STATE_AA64, + .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 4, + .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, + { .name = "AT_S12E1W", .state = ARM_CP_STATE_AA64, + .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 5, + .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, + { .name = "AT_S12E0R", .state = ARM_CP_STATE_AA64, + .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 6, + .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, + { .name = "AT_S12E0W", .state = ARM_CP_STATE_AA64, + .opc0 = 1, .opc1 = 0, .crn = 7, .crm = 8, .opc2 = 7, + .access = PL2_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, + /* AT S1E2* are elsewhere as they UNDEF from EL3 if EL2 is not present */ + { .name = "AT_S1E3R", .state = ARM_CP_STATE_AA64, + .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 0, + .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, + { .name = "AT_S1E3W", .state = ARM_CP_STATE_AA64, + .opc0 = 1, .opc1 = 6, .crn = 7, .crm = 8, .opc2 = 1, + .access = PL3_W, .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, #endif /* TLB invalidate last level of translation table walk */ { .name = "TLBIMVALIS", .cp = 15, .opc1 = 0, .crn = 8, .crm = 3, .opc2 = 5, @@ -3021,6 +3048,18 @@ static const ARMCPRegInfo el2_cp_reginfo[] = { .type = ARM_CP_NO_RAW, .access = PL2_W, .writefn = tlbi_aa64_vaa_write }, #ifndef CONFIG_USER_ONLY + /* Unlike the other EL2-related AT operations, these must + * UNDEF from EL3 if EL2 is not implemented, which is why we + * define them here rather than with the rest of the AT ops. + */ + { .name = "AT_S1E2R", .state = ARM_CP_STATE_AA64, + .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 0, + .access = PL2_W, .accessfn = at_s1e2_access, + .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, + { .name = "AT_S1E2W", .state = ARM_CP_STATE_AA64, + .opc0 = 1, .opc1 = 4, .crn = 7, .crm = 8, .opc2 = 1, + .access = PL2_W, .accessfn = at_s1e2_access, + .type = ARM_CP_NO_RAW, .writefn = ats_write64 }, { .name = "CNTHCTL_EL2", .state = ARM_CP_STATE_BOTH, .opc0 = 3, .opc1 = 4, .crn = 14, .crm = 1, .opc2 = 0, /* ARMv7 requires bit 0 and 1 to reset to 1. ARMv8 defines the |