diff options
| -rw-r--r-- | target/arm/helper.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 2c27077fb2..0e1a3b9421 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -38,6 +38,7 @@ #endif #define ARM_CPU_FREQ 1000000000 /* FIXME: 1 GHz, should be configurable */ +#define PMCR_NUM_COUNTERS 4 /* QEMU IMPDEF choice */ #ifndef CONFIG_USER_ONLY @@ -5735,13 +5736,11 @@ static const ARMCPRegInfo el2_cp_reginfo[] = { .writefn = gt_hyp_ctl_write, .raw_writefn = raw_write }, #endif /* The only field of MDCR_EL2 that has a defined architectural reset value - * is MDCR_EL2.HPMN which should reset to the value of PMCR_EL0.N; but we - * don't implement any PMU event counters, so using zero as a reset - * value for MDCR_EL2 is okay + * is MDCR_EL2.HPMN which should reset to the value of PMCR_EL0.N. */ { .name = "MDCR_EL2", .state = ARM_CP_STATE_BOTH, .opc0 = 3, .opc1 = 4, .crn = 1, .crm = 1, .opc2 = 1, - .access = PL2_RW, .resetvalue = 0, + .access = PL2_RW, .resetvalue = PMCR_NUM_COUNTERS, .fieldoffset = offsetof(CPUARMState, cp15.mdcr_el2), }, { .name = "HPFAR", .state = ARM_CP_STATE_AA32, .cp = 15, .opc1 = 4, .crn = 6, .crm = 0, .opc2 = 4, @@ -6672,7 +6671,7 @@ static void define_pmu_regs(ARMCPU *cpu) * field as main ID register, and we implement four counters in * addition to the cycle count register. */ - unsigned int i, pmcrn = 4; + unsigned int i, pmcrn = PMCR_NUM_COUNTERS; ARMCPRegInfo pmcr = { .name = "PMCR", .cp = 15, .crn = 9, .crm = 12, .opc1 = 0, .opc2 = 0, .access = PL0_RW, |