qemu

FORK: QEMU emulator
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tricore_testdevice.c (2518B)

      1 /*
      2  *  Copyright (c) 2018-2021 Bastian Koppelmann Paderborn University
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Lesser General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Lesser General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Lesser General Public
     15  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
     16  */
     17 
     18 #include "qemu/osdep.h"
     19 #include "hw/sysbus.h"
     20 #include "hw/qdev-properties.h"
     21 #include "hw/tricore/tricore_testdevice.h"
     22 
     23 static void tricore_testdevice_write(void *opaque, hwaddr offset,
     24                                       uint64_t value, unsigned size)
     25 {
     26     exit(value);
     27 }
     28 
     29 static uint64_t tricore_testdevice_read(void *opaque, hwaddr offset,
     30                                          unsigned size)
     31 {
     32     return 0xdeadbeef;
     33 }
     34 
     35 static void tricore_testdevice_reset(DeviceState *dev)
     36 {
     37 }
     38 
     39 static const MemoryRegionOps tricore_testdevice_ops = {
     40     .read = tricore_testdevice_read,
     41     .write = tricore_testdevice_write,
     42     .valid = {
     43         .min_access_size = 4,
     44         .max_access_size = 4,
     45     },
     46     .endianness = DEVICE_NATIVE_ENDIAN,
     47 };
     48 
     49 static void tricore_testdevice_init(Object *obj)
     50 {
     51     TriCoreTestDeviceState *s = TRICORE_TESTDEVICE(obj);
     52    /* map memory */
     53     memory_region_init_io(&s->iomem, OBJECT(s), &tricore_testdevice_ops, s,
     54                           "tricore_testdevice", 0x4);
     55 }
     56 
     57 static Property tricore_testdevice_properties[] = {
     58     DEFINE_PROP_END_OF_LIST()
     59 };
     60 
     61 static void tricore_testdevice_class_init(ObjectClass *klass, void *data)
     62 {
     63     DeviceClass *dc = DEVICE_CLASS(klass);
     64 
     65     device_class_set_props(dc, tricore_testdevice_properties);
     66     dc->reset = tricore_testdevice_reset;
     67 }
     68 
     69 static const TypeInfo tricore_testdevice_info = {
     70     .name          = TYPE_TRICORE_TESTDEVICE,
     71     .parent        = TYPE_SYS_BUS_DEVICE,
     72     .instance_size = sizeof(TriCoreTestDeviceState),
     73     .instance_init = tricore_testdevice_init,
     74     .class_init    = tricore_testdevice_class_init,
     75 };
     76 
     77 static void tricore_testdevice_register_types(void)
     78 {
     79     type_register_static(&tricore_testdevice_info);
     80 }
     81 
     82 type_init(tricore_testdevice_register_types)