diff options
author | Paul Beesley <paul.beesley@arm.com> | 2019-08-23 11:26:57 +0000 |
---|---|---|
committer | TrustedFirmware Code Review <review@review.trustedfirmware.org> | 2019-08-23 11:26:57 +0000 |
commit | 30560911ddd08880f8a2c8142ce8c69975976adc (patch) | |
tree | 62907e026519c717e5a8476d79aa3da47bda15ef /include/arch | |
parent | 44e8d5ebc36950943d70f3517d7756e210fc42ab (diff) | |
parent | e290a8fcbc836d51566da1607add8a320d0f1a20 (diff) |
Merge "AArch64: Disable Secure Cycle Counter" into integration
Diffstat (limited to 'include/arch')
-rw-r--r-- | include/arch/aarch64/arch.h | 30 | ||||
-rw-r--r-- | include/arch/aarch64/el3_common_macros.S | 34 |
2 files changed, 50 insertions, 14 deletions
diff --git a/include/arch/aarch64/arch.h b/include/arch/aarch64/arch.h index 2b4ae1ad..5f84eced 100644 --- a/include/arch/aarch64/arch.h +++ b/include/arch/aarch64/arch.h @@ -133,12 +133,13 @@ #define ID_AA64PFR0_EL2_SHIFT U(8) #define ID_AA64PFR0_EL3_SHIFT U(12) #define ID_AA64PFR0_AMU_SHIFT U(44) -#define ID_AA64PFR0_AMU_LENGTH U(4) #define ID_AA64PFR0_AMU_MASK ULL(0xf) #define ID_AA64PFR0_ELX_MASK ULL(0xf) +#define ID_AA64PFR0_GIC_SHIFT U(24) +#define ID_AA64PFR0_GIC_WIDTH U(4) +#define ID_AA64PFR0_GIC_MASK ULL(0xf) #define ID_AA64PFR0_SVE_SHIFT U(32) #define ID_AA64PFR0_SVE_MASK ULL(0xf) -#define ID_AA64PFR0_SVE_LENGTH U(4) #define ID_AA64PFR0_MPAM_SHIFT U(40) #define ID_AA64PFR0_MPAM_MASK ULL(0xf) #define ID_AA64PFR0_DIT_SHIFT U(48) @@ -149,18 +150,14 @@ #define ID_AA64PFR0_CSV2_MASK ULL(0xf) #define ID_AA64PFR0_CSV2_LENGTH U(4) -/* ID_AA64DFR0_EL1.PMS definitions (for ARMv8.2+) */ -#define ID_AA64DFR0_PMS_SHIFT U(32) -#define ID_AA64DFR0_PMS_LENGTH U(4) -#define ID_AA64DFR0_PMS_MASK ULL(0xf) - +/* Exception level handling */ #define EL_IMPL_NONE ULL(0) #define EL_IMPL_A64ONLY ULL(1) #define EL_IMPL_A64_A32 ULL(2) -#define ID_AA64PFR0_GIC_SHIFT U(24) -#define ID_AA64PFR0_GIC_WIDTH U(4) -#define ID_AA64PFR0_GIC_MASK ULL(0xf) +/* ID_AA64DFR0_EL1.PMS definitions (for ARMv8.2+) */ +#define ID_AA64DFR0_PMS_SHIFT U(32) +#define ID_AA64DFR0_PMS_MASK ULL(0xf) /* ID_AA64ISAR1_EL1 definitions */ #define ID_AA64ISAR1_EL1 S3_0_C0_C6_1 @@ -305,20 +302,25 @@ #define SCR_RESET_VAL SCR_RES1_BITS /* MDCR_EL3 definitions */ +#define MDCR_SCCD_BIT (ULL(1) << 23) +#define MDCR_SPME_BIT (ULL(1) << 17) +#define MDCR_SDD_BIT (ULL(1) << 16) #define MDCR_SPD32(x) ((x) << 14) #define MDCR_SPD32_LEGACY ULL(0x0) #define MDCR_SPD32_DISABLE ULL(0x2) #define MDCR_SPD32_ENABLE ULL(0x3) -#define MDCR_SDD_BIT (ULL(1) << 16) #define MDCR_NSPB(x) ((x) << 12) #define MDCR_NSPB_EL1 ULL(0x3) #define MDCR_TDOSA_BIT (ULL(1) << 10) #define MDCR_TDA_BIT (ULL(1) << 9) #define MDCR_TPM_BIT (ULL(1) << 6) -#define MDCR_SCCD_BIT (ULL(1) << 23) #define MDCR_EL3_RESET_VAL ULL(0x0) /* MDCR_EL2 definitions */ +#define MDCR_EL2_HLP (U(1) << 26) +#define MDCR_EL2_HCCD (U(1) << 23) +#define MDCR_EL2_TTRF (U(1) << 19) +#define MDCR_EL2_HPMD (U(1) << 17) #define MDCR_EL2_TPMS (U(1) << 14) #define MDCR_EL2_E2PB(x) ((x) << 12) #define MDCR_EL2_E2PB_EL1 U(0x3) @@ -678,10 +680,14 @@ #define PMCR_EL0_N_SHIFT U(11) #define PMCR_EL0_N_MASK U(0x1f) #define PMCR_EL0_N_BITS (PMCR_EL0_N_MASK << PMCR_EL0_N_SHIFT) +#define PMCR_EL0_LP_BIT (U(1) << 7) #define PMCR_EL0_LC_BIT (U(1) << 6) #define PMCR_EL0_DP_BIT (U(1) << 5) #define PMCR_EL0_X_BIT (U(1) << 4) #define PMCR_EL0_D_BIT (U(1) << 3) +#define PMCR_EL0_C_BIT (U(1) << 2) +#define PMCR_EL0_P_BIT (U(1) << 1) +#define PMCR_EL0_E_BIT (U(1) << 0) /******************************************************************************* * Definitions for system register interface to SVE diff --git a/include/arch/aarch64/el3_common_macros.S b/include/arch/aarch64/el3_common_macros.S index 22b32b49..a36b7da7 100644 --- a/include/arch/aarch64/el3_common_macros.S +++ b/include/arch/aarch64/el3_common_macros.S @@ -116,12 +116,42 @@ * --------------------------------------------------------------------- */ mov_imm x0, ((MDCR_EL3_RESET_VAL | MDCR_SDD_BIT | \ - MDCR_SPD32(MDCR_SPD32_DISABLE) | MDCR_SCCD_BIT) \ - & ~(MDCR_TDOSA_BIT | MDCR_TDA_BIT | MDCR_TPM_BIT)) + MDCR_SPD32(MDCR_SPD32_DISABLE) | MDCR_SCCD_BIT) & \ + ~(MDCR_TDOSA_BIT | MDCR_TDA_BIT | MDCR_TPM_BIT)) msr mdcr_el3, x0 /* --------------------------------------------------------------------- + * Initialise PMCR_EL0 setting all fields rather than relying + * on hw. Some fields are architecturally UNKNOWN on reset. + * + * PMCR_EL0.LP: Set to one so that event counter overflow, that + * is recorded in PMOVSCLR_EL0[0-30], occurs on the increment + * that changes PMEVCNTR<n>_EL0[63] from 1 to 0, when ARMv8.5-PMU + * is implemented. This bit is RES0 in versions of the architecture + * earlier than ARMv8.5, setting it to 1 doesn't have any effect + * on them. + * + * PMCR_EL0.LC: Set to one so that cycle counter overflow, that + * is recorded in PMOVSCLR_EL0[31], occurs on the increment + * that changes PMCCNTR_EL0[63] from 1 to 0. + * + * PMCR_EL0.DP: Set to one so that the cycle counter, + * PMCCNTR_EL0 does not count when event counting is prohibited. + * + * PMCR_EL0.X: Set to zero to disable export of events. + * + * PMCR_EL0.D: Set to zero so that, when enabled, PMCCNTR_EL0 + * counts on every clock cycle. + * --------------------------------------------------------------------- + */ + mov_imm x0, ((PMCR_EL0_RESET_VAL | PMCR_EL0_LP_BIT | \ + PMCR_EL0_LC_BIT | PMCR_EL0_DP_BIT) & \ + ~(PMCR_EL0_X_BIT | PMCR_EL0_D_BIT)) + + msr pmcr_el0, x0 + + /* --------------------------------------------------------------------- * Enable External Aborts and SError Interrupts now that the exception * vectors have been setup. * --------------------------------------------------------------------- |