| Simon Glass | 7bddac9 | 2014-10-10 08:21:52 -0600 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014 The Chromium OS Authors. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #ifndef __X86_CPU_H |
| 8 | #define __X86_CPU_H |
| 9 | |
| 10 | /** |
| 11 | * cpu_enable_paging_pae() - Enable PAE-paging |
| 12 | * |
| 13 | * @pdpt: Value to set in cr3 (PDPT or PML4T) |
| 14 | */ |
| 15 | void cpu_enable_paging_pae(ulong cr3); |
| 16 | |
| 17 | /** |
| 18 | * cpu_disable_paging_pae() - Disable paging and PAE |
| 19 | */ |
| 20 | void cpu_disable_paging_pae(void); |
| 21 | |
| Simon Glass | 92cc94a | 2014-10-10 08:21:54 -0600 | [diff] [blame^] | 22 | /** |
| 23 | * cpu_has_64bit() - Check if the CPU has 64-bit support |
| 24 | * |
| 25 | * @return 1 if this CPU supports long mode (64-bit), 0 if not |
| 26 | */ |
| 27 | int cpu_has_64bit(void); |
| 28 | |
| Simon Glass | 7bddac9 | 2014-10-10 08:21:52 -0600 | [diff] [blame] | 29 | #endif |