hw/arm/xlnx-versal: add a per_cluster_gic switch to VersalCpuClusterMap

Add the per_cluster_gic switch to the VersalCpuClusterMap structure.
When set, this indicates that a GIC instance should by created
per-cluster instead of globally for the whole RPU or APU. This is in
preparation for versal2.

Signed-off-by: Luc Michel <luc.michel@amd.com>
Reviewed-by: Francisco Iglesias <francisco.iglesias@amd.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20250926070806.292065-38-luc.michel@amd.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c
index 49b5b244403f8bd37500771c10874e8c18067251..3d960ed2636f4461182bbeb177bff51b97d9d7ff 100644 (file)
--- a/hw/arm/xlnx-versal.c
+++ b/hw/arm/xlnx-versal.c
@@ -88,6 +88,11 @@ enum StartPoweredOffMode {
 
 typedef struct VersalCpuClusterMap {
     VersalGicMap gic;
+    /*
+     * true: one GIC per cluster.
+     * false: one GIC for all CPUs
+     */
+    bool per_cluster_gic;
 
     const char *name;
     const char *cpu_model;
@@ -825,12 +830,18 @@ static void versal_create_cpu_cluster(Versal *s, const VersalCpuClusterMap *map)
             cpus[i * map->num_core + j] = cpu;
         }
 
+        if (map->per_cluster_gic) {
+            versal_create_and_connect_gic(s, map, mr, &cpus[i * map->num_core],
+                                          map->num_core);
+        }
     }
 
     qdev_realize_and_unref(cluster, NULL, &error_fatal);
 
-    versal_create_and_connect_gic(s, map, mr, cpus,
-                                  map->num_cluster * map->num_core);
+    if (!map->per_cluster_gic) {
+        versal_create_and_connect_gic(s, map, mr, cpus,
+                                      map->num_cluster * map->num_core);
+    }
 
     has_gtimer = arm_feature(&ARM_CPU(cpus[0])->env, ARM_FEATURE_GENERIC_TIMER);
     if (map->dtb_expose && has_gtimer) {