target/avr/cpu-param.h

   1 /*
   2  * QEMU AVR CPU
   3  *
   4  * Copyright (c) 2016-2020 Michael Rolnik
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see
  18  * <http://www.gnu.org/licenses/lgpl-2.1.html>
  19  */
  20
  21 #ifndef AVR_CPU_PARAM_H
  22 #define AVR_CPU_PARAM_H
  23
  24 #define TARGET_LONG_BITS 32
  25 /*
  26  * TARGET_PAGE_BITS cannot be more than 8 bits because
  27  * 1.  all IO registers occupy [0x0000 .. 0x00ff] address range, and they
  28  *     should be implemented as a device and not memory
  29  * 2.  SRAM starts at the address 0x0100
  30  */
  31 #define TARGET_PAGE_BITS 8
  32 #define TARGET_PHYS_ADDR_SPACE_BITS 24
  33 #define TARGET_VIRT_ADDR_SPACE_BITS 24
  34 #define NB_MMU_MODES 2
  35
  36 #endif