vmstate: port mac_nvram

Signed-off-by: NJuan Quintela <quintela@redhat.com>

hw/mac_nvram.c

@@ -105,24 +105,17 @@ static CPUReadMemoryFunc * const nvram_read[] = {
     &macio_nvram_readb,
 };
 
-static void macio_nvram_save(QEMUFile *f, void *opaque)
-{
-    MacIONVRAMState *s = (MacIONVRAMState *)opaque;
-
-    qemu_put_buffer(f, s->data, s->size);
-}
-
-static int macio_nvram_load(QEMUFile *f, void *opaque, int version_id)
-{
-    MacIONVRAMState *s = (MacIONVRAMState *)opaque;
-
-    if (version_id != 1)
-        return -EINVAL;
-
-    qemu_get_buffer(f, s->data, s->size);
+static const VMStateDescription vmstate_macio_nvram = {
+    .name = "macio_nvram",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .fields      = (VMStateField[]) {
+        VMSTATE_VBUFFER_UINT32(data, MacIONVRAMState, 0, NULL, 0, size),
+        VMSTATE_END_OF_LIST()
+    }
+};
 
-    return 0;
-}
 
 static void macio_nvram_reset(void *opaque)
 {
@@ -141,8 +134,7 @@ MacIONVRAMState *macio_nvram_init (int *mem_index, target_phys_addr_t size,
     s->mem_index = cpu_register_io_memory(nvram_read, nvram_write, s,
                                           DEVICE_NATIVE_ENDIAN);
     *mem_index = s->mem_index;
-    register_savevm(NULL, "macio_nvram", -1, 1, macio_nvram_save,
-                    macio_nvram_load, s);
+    vmstate_register(NULL, -1, &vmstate_macio_nvram, s);
     qemu_register_reset(macio_nvram_reset, s);
 
     return s;