| Tom Lendacky | 7744ccd | 2017-07-17 16:10:03 -0500 | [diff] [blame] | 1 | /* |
| 2 | * AMD Memory Encryption Support |
| 3 | * |
| 4 | * Copyright (C) 2016 Advanced Micro Devices, Inc. |
| 5 | * |
| 6 | * Author: Tom Lendacky <thomas.lendacky@amd.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #ifndef __X86_MEM_ENCRYPT_H__ |
| 14 | #define __X86_MEM_ENCRYPT_H__ |
| 15 | |
| 16 | #ifndef __ASSEMBLY__ |
| 17 | |
| Tom Lendacky | 5868f36 | 2017-07-17 16:10:05 -0500 | [diff] [blame^] | 18 | #include <linux/init.h> |
| 19 | |
| Tom Lendacky | 7744ccd | 2017-07-17 16:10:03 -0500 | [diff] [blame] | 20 | #ifdef CONFIG_AMD_MEM_ENCRYPT |
| 21 | |
| 22 | extern unsigned long sme_me_mask; |
| 23 | |
| Tom Lendacky | 5868f36 | 2017-07-17 16:10:05 -0500 | [diff] [blame^] | 24 | void __init sme_encrypt_kernel(void); |
| 25 | void __init sme_enable(void); |
| 26 | |
| Tom Lendacky | 7744ccd | 2017-07-17 16:10:03 -0500 | [diff] [blame] | 27 | #else /* !CONFIG_AMD_MEM_ENCRYPT */ |
| 28 | |
| 29 | #define sme_me_mask 0UL |
| 30 | |
| Tom Lendacky | 5868f36 | 2017-07-17 16:10:05 -0500 | [diff] [blame^] | 31 | static inline void __init sme_encrypt_kernel(void) { } |
| 32 | static inline void __init sme_enable(void) { } |
| 33 | |
| Tom Lendacky | 7744ccd | 2017-07-17 16:10:03 -0500 | [diff] [blame] | 34 | #endif /* CONFIG_AMD_MEM_ENCRYPT */ |
| 35 | |
| 36 | #endif /* __ASSEMBLY__ */ |
| 37 | |
| 38 | #endif /* __X86_MEM_ENCRYPT_H__ */ |