| Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| Olaf Hering | decd300 | 2005-08-08 13:24:38 +1000 | [diff] [blame] | 2 | #ifndef _PPC_BOOT_PAGE_H |
| 3 | #define _PPC_BOOT_PAGE_H |
| 4 | /* |
| 5 | * Copyright (C) 2001 PPC64 Team, IBM Corp |
| Olaf Hering | decd300 | 2005-08-08 13:24:38 +1000 | [diff] [blame] | 6 | */ |
| 7 | |
| 8 | #ifdef __ASSEMBLY__ |
| 9 | #define ASM_CONST(x) x |
| 10 | #else |
| 11 | #define __ASM_CONST(x) x##UL |
| 12 | #define ASM_CONST(x) __ASM_CONST(x) |
| 13 | #endif |
| 14 | |
| 15 | /* PAGE_SHIFT determines the page size */ |
| 16 | #define PAGE_SHIFT 12 |
| 17 | #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) |
| 18 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
| 19 | |
| 20 | /* align addr on a size boundary - adjust address up/down if needed */ |
| Aneesh Kumar K.V | f78f7ed | 2015-10-08 13:29:28 +0530 | [diff] [blame] | 21 | #define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((typeof(addr))(size)-1))) |
| 22 | #define _ALIGN_DOWN(addr, size) ((addr)&(~((typeof(addr))(size)-1))) |
| Olaf Hering | decd300 | 2005-08-08 13:24:38 +1000 | [diff] [blame] | 23 | |
| 24 | /* align addr on a size boundary - adjust address up if needed */ |
| 25 | #define _ALIGN(addr,size) _ALIGN_UP(addr,size) |
| 26 | |
| 27 | /* to align the pointer to the (next) page boundary */ |
| 28 | #define PAGE_ALIGN(addr) _ALIGN(addr, PAGE_SIZE) |
| 29 | |
| 30 | #endif /* _PPC_BOOT_PAGE_H */ |