arm64: topology: Support PHYTIUM CPU

hulk inclusion
category: feature
bugzilla: NA
CVE: NA
---------------------------

Add the support for PHYTIUM topology detect, it's better
use PPTT ACPI table to report the topology, but we can live
with it at now.
Signed-off-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

arch/arm64/include/asm/cputype.h

@@ -69,6 +69,7 @@
 #define ARM_CPU_IMP_QCOM		0x51
 #define ARM_CPU_IMP_NVIDIA		0x4E
 #define ARM_CPU_IMP_HISI		0x48
+#define ARM_CPU_IMP_PHYTIUM		0x70
 
 #define ARM_CPU_PART_AEM_V8		0xD0F
 #define ARM_CPU_PART_FOUNDATION		0xD00

arch/arm64/kernel/topology.c

@@ -286,6 +286,12 @@ void store_cpu_topology(unsigned int cpuid)
 		cpuid_topo->package_id = MPIDR_AFFINITY_LEVEL(mpidr, 1) |
 					 MPIDR_AFFINITY_LEVEL(mpidr, 2) << 8 |
 					 MPIDR_AFFINITY_LEVEL(mpidr, 3) << 16;
+
+		if (read_cpuid_implementor() == ARM_CPU_IMP_PHYTIUM) {
+			cpuid_topo->thread_id  = 0;
+			cpuid_topo->core_id  = cpuid;
+			cpuid_topo->package_id = 0;
+		}
 	}
 
 	pr_debug("CPU%u: cluster %d core %d thread %d mpidr %#016llx\n",