| /* |
| * 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 |
| |
| #define TARGET_LONG_BITS 64 |
| |
| /* ??? EV4 has 34 phys addr bits, EV5 has 40, EV6 has 44. */ |
| #define TARGET_PHYS_ADDR_SPACE_BITS 44 |
| |
| #ifdef CONFIG_USER_ONLY |
| /* |
| * Allow user-only to vary page size. Real hardware allows only 8k and 64k, |
| * but since any variance means guests cannot assume a fixed value, allow |
| * a 4k minimum to match x86 host, which can minimize emulation issues. |
| */ |
| # define TARGET_PAGE_BITS_VARY |
| # define TARGET_PAGE_BITS_MIN 12 |
| # define TARGET_VIRT_ADDR_SPACE_BITS 63 |
| #else |
| # define TARGET_PAGE_BITS 13 |
| # define TARGET_VIRT_ADDR_SPACE_BITS (30 + TARGET_PAGE_BITS) |
| #endif |
| |
| #endif |
