[Qemu-devel] [PULL 17/62] ARM: cpu: add "reset_hivecs" property

[Peter Maydell]

From: Antony Pavlov <address@hidden>

Add an ARM CPU property for the reset value of hivecs as it is a
board/SoC configurable setting.

The existence of the property is conditional on the ARM CPU not being M
class.

Signed-off-by: Antony Pavlov <address@hidden>
Signed-off-by: Peter Crosthwaite <address@hidden>
Message-id: address@hidden
[ PC Changes:
 * Elaborated commit message
 * refactored to use qdev_property_add_static
]
Signed-off-by: Peter Crosthwaite <address@hidden>
Signed-off-by: Peter Maydell <address@hidden>
---
 target-arm/cpu-qom.h |  1 +
 target-arm/cpu.c     | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h
index f32178a..afbd422 100644
--- a/target-arm/cpu-qom.h
+++ b/target-arm/cpu-qom.h
@@ -139,6 +139,7 @@ typedef struct ARMCPU {
     uint32_t ccsidr[16];
     uint32_t reset_cbar;
     uint32_t reset_auxcr;
+    bool reset_hivecs;
 } ARMCPU;
 
 #define TYPE_AARCH64_CPU "aarch64-cpu"
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index fd04b36..3bce1d6 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -235,6 +235,9 @@ static void arm_cpu_initfn(Object *obj)
 static Property arm_cpu_reset_cbar_property =
             DEFINE_PROP_UINT32("reset-cbar", ARMCPU, reset_cbar, 0);
 
+static Property arm_cpu_reset_hivecs_property =
+            DEFINE_PROP_BOOL("reset-hivecs", ARMCPU, reset_hivecs, false);
+
 static void arm_cpu_post_init(Object *obj)
 {
     ARMCPU *cpu = ARM_CPU(obj);
@@ -245,6 +248,12 @@ static void arm_cpu_post_init(Object *obj)
                                  &err);
         assert_no_error(err);
     }
+
+    if (!arm_feature(&cpu->env, ARM_FEATURE_M)) {
+        qdev_property_add_static(DEVICE(obj), &arm_cpu_reset_hivecs_property,
+                                 &err);
+        assert_no_error(err);
+    }
 }
 
 static void arm_cpu_finalizefn(Object *obj)
@@ -307,6 +316,10 @@ static void arm_cpu_realizefn(DeviceState *dev, Error 
**errp)
         set_feature(env, ARM_FEATURE_PXN);
     }
 
+    if (cpu->reset_hivecs) {
+            cpu->reset_sctlr |= (1 << 13);
+    }
+
     register_cp_regs_for_features(cpu);
     arm_cpu_register_gdb_regs_for_features(cpu);
 
-- 
1.8.5