xref: /haiku/src/system/boot/platform/efi/arch/arm64/arch_cache.cpp (revision b983396cfc3ef698a721da73bf54c9b89f33c153) 
1f9412d9fSurnenfeld /*
2f9412d9fSurnenfeld  * Copyright 2021-2022, Oliver Ruiz Dorantes. All rights reserved.
3f9412d9fSurnenfeld  * Distributed under the terms of the MIT License.
4f9412d9fSurnenfeld  */
5f9412d9fSurnenfeld #include <boot/platform.h>
6f9412d9fSurnenfeld #include <boot/stage2.h>
7f9412d9fSurnenfeld 
8f9412d9fSurnenfeld #include "aarch64.h"
9f9412d9fSurnenfeld 
10f9412d9fSurnenfeld 
11f9412d9fSurnenfeld void
arch_cache_disable()12f9412d9fSurnenfeld arch_cache_disable()
13f9412d9fSurnenfeld {
14f9412d9fSurnenfeld 	if (arch_mmu_cache_enabled()) {
15f9412d9fSurnenfeld 		uint64 sctlr = _arch_mmu_get_sctlr();
16*b983396cSOwen Anderson 		sctlr &= ~(SCTLR_M | SCTLR_C | SCTLR_I);
17f9412d9fSurnenfeld 		_arch_mmu_set_sctlr(sctlr);
18f9412d9fSurnenfeld 
19f9412d9fSurnenfeld 		_arch_cache_clean_poc();
20f9412d9fSurnenfeld 		_arch_mmu_invalidate_tlb_all(arch_exception_level());
21f9412d9fSurnenfeld 	}
22f9412d9fSurnenfeld }
23f9412d9fSurnenfeld 
24f9412d9fSurnenfeld 
25f9412d9fSurnenfeld void
arch_cache_enable()26f9412d9fSurnenfeld arch_cache_enable()
27f9412d9fSurnenfeld {
28f9412d9fSurnenfeld 	if (!arch_mmu_cache_enabled()) {
29f9412d9fSurnenfeld 		uint64 sctlr = _arch_mmu_get_sctlr();
30*b983396cSOwen Anderson 		sctlr |= (SCTLR_M | SCTLR_C | SCTLR_I);
31f9412d9fSurnenfeld 		_arch_mmu_set_sctlr(sctlr);
32f9412d9fSurnenfeld 	}
33f9412d9fSurnenfeld }
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