1 /*
2 * Copyright (C) 2022 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "FreeRTOS.h"
18
19 #include "chre/platform/shared/nanoapp_loader.h"
20 #include "chre/platform/shared/platform_cache_management.h"
21
22 #include "dma_api.h"
23
24 namespace chre {
25
wipeSystemCaches(uintptr_t address,uint32_t span)26 void wipeSystemCaches(uintptr_t address, uint32_t span) {
27 if (span == 0) return;
28
29 auto aligned_addr = NanoappLoader::roundDownToAlign(address, CACHE_LINE_SIZE);
30 auto aligned_span = (span + CACHE_LINE_SIZE - 1) & ~(CACHE_LINE_SIZE - 1);
31 LOGV("Invalidate cache at 0x%lx for %u", aligned_addr, aligned_span);
32
33 // Flush D cache first for updating binary to heap memory
34 mrv_dcache_flush_multi_addr(aligned_addr, aligned_span);
35 // Invalid I cache for fetch instructions
36 mrv_icache_invalid_multi_addr(aligned_addr, aligned_span);
37 }
38
39 } // namespace chre