1 /*
2  * SiFive CLINT (Core Local Interruptor) interface
3  *
4  * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
5  * Copyright (c) 2017 SiFive, Inc.
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms and conditions of the GNU General Public License,
9  * version 2 or later, as published by the Free Software Foundation.
10  *
11  * This program is distributed in the hope it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along with
17  * this program.  If not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #ifndef HW_SIFIVE_CLINT_H
21 #define HW_SIFIVE_CLINT_H
22 
23 #define TYPE_SIFIVE_CLINT "riscv.sifive.clint"
24 
25 #define SIFIVE_CLINT(obj) \
26     OBJECT_CHECK(SiFiveCLINTState, (obj), TYPE_SIFIVE_CLINT)
27 
28 typedef struct SiFiveCLINTState {
29     /*< private >*/
30     SysBusDevice parent_obj;
31 
32     /*< public >*/
33     MemoryRegion mmio;
34     uint32_t num_harts;
35     uint32_t sip_base;
36     uint32_t timecmp_base;
37     uint32_t time_base;
38     uint32_t aperture_size;
39 } SiFiveCLINTState;
40 
41 DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, uint32_t num_harts,
42     uint32_t sip_base, uint32_t timecmp_base, uint32_t time_base);
43 
44 enum {
45     SIFIVE_SIP_BASE     = 0x0,
46     SIFIVE_TIMECMP_BASE = 0x4000,
47     SIFIVE_TIME_BASE    = 0xBFF8
48 };
49 
50 enum {
51     SIFIVE_CLINT_TIMEBASE_FREQ = 10000000
52 };
53 
54 #endif
55