include/hw/riscv/sifive_clint.h

   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 #include "hw/sysbus.h"
  24
  25 #define TYPE_SIFIVE_CLINT "riscv.sifive.clint"
  26
  27 #define SIFIVE_CLINT(obj) \
  28     OBJECT_CHECK(SiFiveCLINTState, (obj), TYPE_SIFIVE_CLINT)
  29
  30 typedef struct SiFiveCLINTState {
  31     /*< private >*/
  32     SysBusDevice parent_obj;
  33
  34     /*< public >*/
  35     MemoryRegion mmio;
  36     uint32_t num_harts;
  37     uint32_t sip_base;
  38     uint32_t timecmp_base;
  39     uint32_t time_base;
  40     uint32_t aperture_size;
  41 } SiFiveCLINTState;
  42
  43 DeviceState *sifive_clint_create(hwaddr addr, hwaddr size, uint32_t num_harts,
  44     uint32_t sip_base, uint32_t timecmp_base, uint32_t time_base,
  45     bool provide_rdtime);
  46
  47 enum {
  48     SIFIVE_SIP_BASE     = 0x0,
  49     SIFIVE_TIMECMP_BASE = 0x4000,
  50     SIFIVE_TIME_BASE    = 0xBFF8
  51 };
  52
  53 enum {
  54     SIFIVE_CLINT_TIMEBASE_FREQ = 10000000
  55 };
  56
  57 #endif