32 lines
992 B
C
32 lines
992 B
C
|
/*
|
||
|
|
* Alpha cpu parameters for qemu.
|
||
|
|
*
|
||
|
|
* Copyright (c) 2007 Jocelyn Mayer
|
||
|
|
* SPDX-License-Identifier: LGPL-2.0+
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef ALPHA_CPU_PARAM_H
|
||
|
|
#define ALPHA_CPU_PARAM_H 1
|
||
|
|
|
||
|
|
#define TARGET_LONG_BITS 64
|
||
|
|
#define TARGET_PAGE_BITS 13
|
||
|
|
#ifdef CONFIG_USER_ONLY
|
||
|
|
/*
|
||
|
|
* ??? The kernel likes to give addresses in high memory. If the host has
|
||
|
|
* more virtual address space than the guest, this can lead to impossible
|
||
|
|
* allocations. Honor the long-standing assumption that only kernel addrs
|
||
|
|
* are negative, but otherwise allow allocations anywhere. This could lead
|
||
|
|
* to tricky emulation problems for programs doing tagged addressing, but
|
||
|
|
* that's far fewer than encounter the impossible allocation problem.
|
||
|
|
*/
|
||
|
|
#define TARGET_PHYS_ADDR_SPACE_BITS 63
|
||
|
|
#define TARGET_VIRT_ADDR_SPACE_BITS 63
|
||
|
|
#else
|
||
|
|
/* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44. */
|
||
|
|
#define TARGET_PHYS_ADDR_SPACE_BITS 44
|
||
|
|
#define TARGET_VIRT_ADDR_SPACE_BITS (30 + TARGET_PAGE_BITS)
|
||
|
|
#endif
|
||
|
|
#define NB_MMU_MODES 3
|
||
|
|
|
||
|
|
#endif
|