LXR qemu/target/microblaze/cpu-param.h

   1/*
   2 * MicroBlaze cpu parameters for qemu.
   3 *
   4 * Copyright (c) 2009 Edgar E. Iglesias
   5 * SPDX-License-Identifier: LGPL-2.0+
   6 */
   7
   8#ifndef MICROBLAZE_CPU_PARAM_H
   9#define MICROBLAZE_CPU_PARAM_H 1
  10
  11/*
  12 * While system mode can address up to 64 bits of address space,
  13 * this is done via the lea/sea instructions, which are system-only
  14 * (as they also bypass the mmu).
  15 *
  16 * We can improve the user-only experience by only exposing 32 bits
  17 * of address space.
  18 */
  19#ifdef CONFIG_USER_ONLY
  20#define TARGET_LONG_BITS 32
  21#define TARGET_PHYS_ADDR_SPACE_BITS 32
  22#define TARGET_VIRT_ADDR_SPACE_BITS 32
  23#else
  24#define TARGET_LONG_BITS 64
  25#define TARGET_PHYS_ADDR_SPACE_BITS 64
  26#define TARGET_VIRT_ADDR_SPACE_BITS 64
  27#endif
  28
  29/* FIXME: MB uses variable pages down to 1K but linux only uses 4k.  */
  30#define TARGET_PAGE_BITS 12
  31#define NB_MMU_MODES 3
  32
  33#endif
  34