| /* |
| * Copyright (c) 2008 Travis Geiselbrecht |
| * |
| * Copyright (c) 2013, The Linux Foundation. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files |
| * (the "Software"), to deal in the Software without restriction, |
| * including without limitation the rights to use, copy, modify, merge, |
| * publish, distribute, sublicense, and/or sell copies of the Software, |
| * and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #ifndef __ARCH_CPU_H |
| #define __ARCH_CPU_H |
| |
| /* arm specific stuff */ |
| #define PAGE_SIZE 4096 |
| |
| #if defined(ARM_CPU_ARM1136) |
| #define CACHE_LINE 32 |
| #elif defined(ARM_CPU_CORE_A5) |
| #define CACHE_LINE 32 |
| #elif defined(ARM_CPU_CORE_SCORPION) |
| #define CACHE_LINE 32 |
| #elif defined(ARM_CPU_CORE_KRAIT) || defined(ARM_CPU_CORE_A7) |
| #define CACHE_LINE 64 |
| #else |
| #error unknown cpu |
| #endif |
| |
| #define IS_CACHE_LINE_ALIGNED(addr) !((uint32_t) (addr) & (CACHE_LINE - 1)) |
| |
| #if ARM_ISA_ARMV7 |
| #define dsb() __asm__ volatile ("dsb" : : : "memory"); |
| #elif ARM_ISA_ARMV6 |
| #define dsb() __asm__ volatile ("mcr p15, 0, %0, c7, c10, 4" : : "r" (0): "memory"); |
| #endif |
| |
| #define GET_CAHE_LINE_START_ADDR(addr) ROUNDDOWN(addr, CACHE_LINE) |
| |
| #endif |