| /* |
| * Copyright (c) 2014 Wind River Systems, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @file |
| * @brief Cache helper functions (ARC) |
| * |
| * This file contains private nanokernel structures definitions and various |
| * other definitions for the ARCv2 processor architecture. |
| */ |
| |
| #ifndef _ARCV2_CACHE__H_ |
| #define _ARCV2_CACHE__H_ |
| |
| #include <arch/cpu.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef _ASMLANGUAGE |
| |
| #define CACHE_ENABLE 0x00 |
| #define CACHE_DISABLE 0x01 |
| #define CACHE_DIRECT 0x00 |
| #define CACHE_CACHE_CONTROLLED 0x20 |
| |
| /* |
| * @brief Sets the I-cache |
| * |
| * Enables cache and sets the direct access. |
| */ |
| static ALWAYS_INLINE void _icache_setup(void) |
| { |
| uint32_t icache_config = ( |
| CACHE_DIRECT | /* direct mapping (one-way assoc.) */ |
| CACHE_ENABLE /* i-cache enabled */ |
| ); |
| uint32_t val; |
| |
| val = _arc_v2_aux_reg_read(_ARC_V2_I_CACHE_BUILD); |
| val &= 0xff; |
| if (val != 0) { |
| /* configure i-cache if present */ |
| _arc_v2_aux_reg_write(_ARC_V2_IC_CTRL, icache_config); |
| } |
| } |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _ARCV2_CACHE__H_ */ |