hw/arm/armsse: Add CPU_IDENTITY block to SSE-200

Instantiate a copy of the CPU_IDENTITY register block for each CPU
in an SSE-200.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190121185118.18550-21-peter.maydell@linaro.org

hw/arm/armsse.c

@@ -34,6 +34,7 @@ struct ARMSSEInfo {
     bool has_ppus;
     bool has_cachectrl;
     bool has_cpusecctrl;
+    bool has_cpuid;
 };
 
 static const ARMSSEInfo armsse_variants[] = {
@@ -47,6 +48,7 @@ static const ARMSSEInfo armsse_variants[] = {
         .has_ppus = false,
         .has_cachectrl = false,
         .has_cpusecctrl = false,
+        .has_cpuid = false,
     },
 };
 
@@ -314,6 +316,16 @@ static void armsse_init(Object *obj)
             g_free(name);
         }
     }
+    if (info->has_cpuid) {
+        for (i = 0; i < info->num_cpus; i++) {
+            char *name = g_strdup_printf("cpuid%d", i);
+
+            sysbus_init_child_obj(obj, name, &s->cpuid[i],
+                                  sizeof(s->cpuid[i]),
+                                  TYPE_ARMSSE_CPUID);
+            g_free(name);
+        }
+    }
     object_initialize_child(obj, "nmi-orgate", &s->nmi_orgate,
                             sizeof(s->nmi_orgate), TYPE_OR_IRQ,
                             &error_abort, NULL);
@@ -864,6 +876,22 @@ static void armsse_realize(DeviceState *dev, Error **errp)
             memory_region_add_subregion(&s->cpu_container[i], 0x50011000, mr);
         }
     }
+    if (info->has_cpuid) {
+        for (i = 0; i < info->num_cpus; i++) {
+            MemoryRegion *mr;
+
+            qdev_prop_set_uint32(DEVICE(&s->cpuid[i]), "CPUID", i);
+            object_property_set_bool(OBJECT(&s->cpuid[i]), true,
+                                     "realized", &err);
+            if (err) {
+                error_propagate(errp, err);
+                return;
+            }
+
+            mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->cpuid[i]), 0);
+            memory_region_add_subregion(&s->cpu_container[i], 0x4001F000, mr);
+        }
+    }
 
     /* 0x40020000 .. 0x4002ffff : ARMSSE system control peripheral region */
     /* Devices behind APB PPC1:

include/hw/arm/armsse.h

@@ -78,6 +78,7 @@
 #include "hw/watchdog/cmsdk-apb-watchdog.h"
 #include "hw/misc/iotkit-sysctl.h"
 #include "hw/misc/iotkit-sysinfo.h"
+#include "hw/misc/armsse-cpuid.h"
 #include "hw/misc/unimp.h"
 #include "hw/or-irq.h"
 #include "hw/core/split-irq.h"
@@ -153,6 +154,8 @@ typedef struct ARMSSE {
     UnimplementedDeviceState cachectrl[SSE_MAX_CPUS];
     UnimplementedDeviceState cpusecctrl[SSE_MAX_CPUS];
 
+    ARMSSECPUID cpuid[SSE_MAX_CPUS];
+
     /*
      * 'container' holds all devices seen by all CPUs.
      * 'cpu_container[i]' is the view that CPU i has: this has the