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-rw-r--r--hw/arm/armv7m.c39
-rw-r--r--hw/arm/mps2.c1
-rw-r--r--hw/arm/msf2-soc.c1
-rw-r--r--hw/arm/stellaris.c1
-rw-r--r--hw/arm/stm32f205_soc.c1
-rw-r--r--include/hw/arm/armv7m.h2
6 files changed, 27 insertions, 18 deletions
diff --git a/hw/arm/armv7m.c b/hw/arm/armv7m.c
index 6b07666057..878613994d 100644
--- a/hw/arm/armv7m.c
+++ b/hw/arm/armv7m.c
@@ -211,25 +211,27 @@ static void armv7m_realize(DeviceState *dev, Error **errp)
     memory_region_add_subregion(&s->container, 0xe000e000,
                                 sysbus_mmio_get_region(sbd, 0));
 
-    for (i = 0; i < ARRAY_SIZE(s->bitband); i++) {
-        Object *obj = OBJECT(&s->bitband[i]);
-        SysBusDevice *sbd = SYS_BUS_DEVICE(&s->bitband[i]);
-
-        object_property_set_int(obj, bitband_input_addr[i], "base", &err);
-        if (err != NULL) {
-            error_propagate(errp, err);
-            return;
+    if (s->enable_bitband) {
+        for (i = 0; i < ARRAY_SIZE(s->bitband); i++) {
+            Object *obj = OBJECT(&s->bitband[i]);
+            SysBusDevice *sbd = SYS_BUS_DEVICE(&s->bitband[i]);
+
+            object_property_set_int(obj, bitband_input_addr[i], "base", &err);
+            if (err != NULL) {
+                error_propagate(errp, err);
+                return;
+            }
+            object_property_set_link(obj, OBJECT(s->board_memory),
+                                     "source-memory", &error_abort);
+            object_property_set_bool(obj, true, "realized", &err);
+            if (err != NULL) {
+                error_propagate(errp, err);
+                return;
+            }
+
+            memory_region_add_subregion(&s->container, bitband_output_addr[i],
+                                        sysbus_mmio_get_region(sbd, 0));
         }
-        object_property_set_link(obj, OBJECT(s->board_memory),
-                                 "source-memory", &error_abort);
-        object_property_set_bool(obj, true, "realized", &err);
-        if (err != NULL) {
-            error_propagate(errp, err);
-            return;
-        }
-
-        memory_region_add_subregion(&s->container, bitband_output_addr[i],
-                                    sysbus_mmio_get_region(sbd, 0));
     }
 }
 
@@ -239,6 +241,7 @@ static Property armv7m_properties[] = {
                      MemoryRegion *),
     DEFINE_PROP_LINK("idau", ARMv7MState, idau, TYPE_IDAU_INTERFACE, Object *),
     DEFINE_PROP_UINT32("init-svtor", ARMv7MState, init_svtor, 0),
+    DEFINE_PROP_BOOL("enable-bitband", ARMv7MState, enable_bitband, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/hw/arm/mps2.c b/hw/arm/mps2.c
index c3946da317..0a0ae867d9 100644
--- a/hw/arm/mps2.c
+++ b/hw/arm/mps2.c
@@ -186,6 +186,7 @@ static void mps2_common_init(MachineState *machine)
         g_assert_not_reached();
     }
     qdev_prop_set_string(armv7m, "cpu-type", machine->cpu_type);
+    qdev_prop_set_bit(armv7m, "enable-bitband", true);
     object_property_set_link(OBJECT(&mms->armv7m), OBJECT(system_memory),
                              "memory", &error_abort);
     object_property_set_bool(OBJECT(&mms->armv7m), true, "realized",
diff --git a/hw/arm/msf2-soc.c b/hw/arm/msf2-soc.c
index dbefade644..2702e90b45 100644
--- a/hw/arm/msf2-soc.c
+++ b/hw/arm/msf2-soc.c
@@ -117,6 +117,7 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
     armv7m = DEVICE(&s->armv7m);
     qdev_prop_set_uint32(armv7m, "num-irq", 81);
     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
+    qdev_prop_set_bit(armv7m, "enable-bitband", true);
     object_property_set_link(OBJECT(&s->armv7m), OBJECT(get_system_memory()),
                                      "memory", &error_abort);
     object_property_set_bool(OBJECT(&s->armv7m), true, "realized", &err);
diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index dc521b4a5a..6c69ce79b2 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -1304,6 +1304,7 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
     nvic = qdev_create(NULL, TYPE_ARMV7M);
     qdev_prop_set_uint32(nvic, "num-irq", NUM_IRQ_LINES);
     qdev_prop_set_string(nvic, "cpu-type", ms->cpu_type);
+    qdev_prop_set_bit(nvic, "enable-bitband", true);
     object_property_set_link(OBJECT(nvic), OBJECT(get_system_memory()),
                                      "memory", &error_abort);
     /* This will exit with an error if the user passed us a bad cpu_type */
diff --git a/hw/arm/stm32f205_soc.c b/hw/arm/stm32f205_soc.c
index c486d06a8b..980e5af13c 100644
--- a/hw/arm/stm32f205_soc.c
+++ b/hw/arm/stm32f205_soc.c
@@ -109,6 +109,7 @@ static void stm32f205_soc_realize(DeviceState *dev_soc, Error **errp)
     armv7m = DEVICE(&s->armv7m);
     qdev_prop_set_uint32(armv7m, "num-irq", 96);
     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
+    qdev_prop_set_bit(armv7m, "enable-bitband", true);
     object_property_set_link(OBJECT(&s->armv7m), OBJECT(get_system_memory()),
                                      "memory", &error_abort);
     object_property_set_bool(OBJECT(&s->armv7m), true, "realized", &err);
diff --git a/include/hw/arm/armv7m.h b/include/hw/arm/armv7m.h
index 78308d1484..2ba24953b6 100644
--- a/include/hw/arm/armv7m.h
+++ b/include/hw/arm/armv7m.h
@@ -43,6 +43,7 @@ typedef struct {
  *   devices will be automatically layered on top of this view.)
  * + Property "idau": IDAU interface (forwarded to CPU object)
  * + Property "init-svtor": secure VTOR reset value (forwarded to CPU object)
+ * + Property "enable-bitband": expose bitbanded IO
  */
 typedef struct ARMv7MState {
     /*< private >*/
@@ -63,6 +64,7 @@ typedef struct ARMv7MState {
     MemoryRegion *board_memory;
     Object *idau;
     uint32_t init_svtor;
+    bool enable_bitband;
 } ARMv7MState;
 
 #endif