include/hw/misc/sifive_e_aon.h

   1 /*
   2  * SiFive HiFive1 AON (Always On Domain) interface.
   3  *
   4  * Copyright (c) 2022 SiFive, Inc. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2 or later, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #ifndef HW_SIFIVE_AON_H
  20 #define HW_SIFIVE_AON_H
  21
  22 #include "hw/sysbus.h"
  23 #include "qom/object.h"
  24
  25 #define TYPE_SIFIVE_E_AON "riscv.sifive.e.aon"
  26 OBJECT_DECLARE_SIMPLE_TYPE(SiFiveEAONState, SIFIVE_E_AON)
  27
  28 #define SIFIVE_E_AON_WDOGKEY (0x51F15E)
  29 #define SIFIVE_E_AON_WDOGFEED (0xD09F00D)
  30 #define SIFIVE_E_LFCLK_DEFAULT_FREQ (32768)
  31
  32 enum {
  33     SIFIVE_E_AON_WDT    = 0x0,
  34     SIFIVE_E_AON_RTC    = 0x40,
  35     SIFIVE_E_AON_LFROSC = 0x70,
  36     SIFIVE_E_AON_BACKUP = 0x80,
  37     SIFIVE_E_AON_PMU    = 0x100,
  38     SIFIVE_E_AON_MAX    = 0x150
  39 };
  40
  41 struct SiFiveEAONState {
  42     /*< private >*/
  43     SysBusDevice parent_obj;
  44
  45     /*< public >*/
  46     MemoryRegion mmio;
  47
  48     /*< watchdog timer >*/
  49     QEMUTimer *wdog_timer;
  50     qemu_irq wdog_irq;
  51     uint64_t wdog_restart_time;
  52     uint64_t wdogclk_freq;
  53
  54     uint32_t wdogcfg;
  55     uint16_t wdogcmp0;
  56     uint32_t wdogcount;
  57     uint8_t wdogunlock;
  58 };
  59
  60 #endif