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target-arm: Implement AArch64 MPIDR 

Implement the AArch64 MPIDR system register.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
master
Peter Maydell 2014-02-26 17:20:04 +00:00
parent 327ed10fa2
commit 4b7fff2fab
1 changed files with 4 additions and 2 deletions
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6
target-arm/helper.c
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@ -1435,7 +1435,8 @@ static uint64_t mpidr_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
CPUState *cs = CPU(arm_env_get_cpu(env));
uint32_t mpidr = cs->cpu_index;
/* We don't support setting cluster ID ([8..11])
/* We don't support setting cluster ID ([8..11]) (known as Aff1
* in later ARM ARM versions), or any of the higher affinity level fields,
* so these bits always RAZ.
*/
if (arm_feature(env, ARM_FEATURE_V7MP)) {
@ -1450,7 +1451,8 @@ static uint64_t mpidr_read(CPUARMState *env, const ARMCPRegInfo *ri)
}
static const ARMCPRegInfo mpidr_cp_reginfo[] = {
{ .name = "MPIDR", .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 5,
{ .name = "MPIDR", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 5,
.access = PL1_R, .readfn = mpidr_read, .type = ARM_CP_NO_MIGRATE },
REGINFO_SENTINEL
};