target/riscv/cpu-param.h

   1 /*
   2  * RISC-V cpu parameters for qemu.
   3  *
   4  * Copyright (c) 2017-2018 SiFive, Inc.
   5  * SPDX-License-Identifier: GPL-2.0+
   6  */
   7
   8 #ifndef RISCV_CPU_PARAM_H
   9 #define RISCV_CPU_PARAM_H 1
  10
  11 #if defined(TARGET_RISCV64)
  12 # define TARGET_LONG_BITS 64
  13 # define TARGET_PHYS_ADDR_SPACE_BITS 56 /* 44-bit PPN */
  14 # define TARGET_VIRT_ADDR_SPACE_BITS 48 /* sv48 */
  15 #elif defined(TARGET_RISCV32)
  16 # define TARGET_LONG_BITS 32
  17 # define TARGET_PHYS_ADDR_SPACE_BITS 34 /* 22-bit PPN */
  18 # define TARGET_VIRT_ADDR_SPACE_BITS 32 /* sv32 */
  19 #endif
  20 #define TARGET_PAGE_BITS 12 /* 4 KiB Pages */
  21 /*
  22  * The current MMU Modes are:
  23  *  - U mode 0b000
  24  *  - S mode 0b001
  25  *  - M mode 0b011
  26  *  - U mode HLV/HLVX/HSV 0b100
  27  *  - S mode HLV/HLVX/HSV 0b101
  28  *  - M mode HLV/HLVX/HSV 0b111
  29  */
  30 #define NB_MMU_MODES 8
  31
  32 #endif