target/alpha/cpu-param.h

   1 /*
   2  * Alpha cpu parameters for qemu.
   3  *
   4  * Copyright (c) 2007 Jocelyn Mayer
   5  * SPDX-License-Identifier: LGPL-2.0+
   6  */
   7
   8 #ifndef ALPHA_CPU_PARAM_H
   9 #define ALPHA_CPU_PARAM_H
  10
  11 #define TARGET_LONG_BITS 64
  12
  13 /* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44.  */
  14 #define TARGET_PHYS_ADDR_SPACE_BITS  44
  15
  16 #ifdef CONFIG_USER_ONLY
  17 /*
  18  * Allow user-only to vary page size.  Real hardware allows only 8k and 64k,
  19  * but since any variance means guests cannot assume a fixed value, allow
  20  * a 4k minimum to match x86 host, which can minimize emulation issues.
  21  */
  22 # define TARGET_PAGE_BITS_VARY
  23 # define TARGET_PAGE_BITS_MIN 12
  24 # define TARGET_VIRT_ADDR_SPACE_BITS  63
  25 #else
  26 # define TARGET_PAGE_BITS 13
  27 # define TARGET_VIRT_ADDR_SPACE_BITS  (30 + TARGET_PAGE_BITS)
  28 #endif
  29
  30 #endif