diff options
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/hvf/hvf.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c index 808c96d..4d4ddab 100644 --- a/target/arm/hvf/hvf.c +++ b/target/arm/hvf/hvf.c @@ -754,6 +754,15 @@ static bool hvf_handle_psci_call(CPUState *cpu) return true; } +static bool is_id_sysreg(uint32_t reg) +{ + return SYSREG_OP0(reg) == 3 && + SYSREG_OP1(reg) == 0 && + SYSREG_CRN(reg) == 0 && + SYSREG_CRM(reg) >= 1 && + SYSREG_CRM(reg) < 8; +} + static int hvf_sysreg_read(CPUState *cpu, uint32_t reg, uint32_t rt) { ARMCPU *arm_cpu = ARM_CPU(cpu); @@ -806,6 +815,11 @@ static int hvf_sysreg_read(CPUState *cpu, uint32_t reg, uint32_t rt) /* Dummy register */ break; default: + if (is_id_sysreg(reg)) { + /* ID system registers read as RES0 */ + val = 0; + break; + } cpu_synchronize_state(cpu); trace_hvf_unhandled_sysreg_read(env->pc, reg, SYSREG_OP0(reg), |