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
  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