LXR qemu/include/hw/riscv/sifive

   1/*
   2 * QEMU SiFive PRCI (Power, Reset, Clock, Interrupt) interface
   3 *
   4 * Copyright (c) 2017 SiFive, Inc.
   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_PRCI_H
  20#define HW_SIFIVE_PRCI_H
  21
  22enum {
  23    SIFIVE_PRCI_HFROSCCFG   = 0x0,
  24    SIFIVE_PRCI_HFXOSCCFG   = 0x4,
  25    SIFIVE_PRCI_PLLCFG      = 0x8,
  26    SIFIVE_PRCI_PLLOUTDIV   = 0xC
  27};
  28
  29enum {
  30    SIFIVE_PRCI_HFROSCCFG_RDY   = (1 << 31),
  31    SIFIVE_PRCI_HFROSCCFG_EN    = (1 << 30)
  32};
  33
  34enum {
  35    SIFIVE_PRCI_HFXOSCCFG_RDY   = (1 << 31),
  36    SIFIVE_PRCI_HFXOSCCFG_EN    = (1 << 30)
  37};
  38
  39enum {
  40    SIFIVE_PRCI_PLLCFG_PLLSEL   = (1 << 16),
  41    SIFIVE_PRCI_PLLCFG_REFSEL   = (1 << 17),
  42    SIFIVE_PRCI_PLLCFG_BYPASS   = (1 << 18),
  43    SIFIVE_PRCI_PLLCFG_LOCK     = (1 << 31)
  44};
  45
  46enum {
  47    SIFIVE_PRCI_PLLOUTDIV_DIV1  = (1 << 8)
  48};
  49
  50#define TYPE_SIFIVE_PRCI "riscv.sifive.prci"
  51
  52#define SIFIVE_PRCI(obj) \
  53    OBJECT_CHECK(SiFivePRCIState, (obj), TYPE_SIFIVE_PRCI)
  54
  55typedef struct SiFivePRCIState {
  56    /*< private >*/
  57    SysBusDevice parent_obj;
  58
  59    /*< public >*/
  60    MemoryRegion mmio;
  61    uint32_t hfrosccfg;
  62    uint32_t hfxosccfg;
  63    uint32_t pllcfg;
  64    uint32_t plloutdiv;
  65} SiFivePRCIState;
  66
  67DeviceState *sifive_prci_create(hwaddr addr);
  68
  69#endif
  70