mirror of
https://github.com/Atmosphere-NX/Atmosphere
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46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
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/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern::arm64 {
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void KPageTable::Initialize(s32 core_id) {
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/* Nothing actually needed here. */
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}
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Result KPageTable::InitializeForKernel(void *table, KVirtualAddress start, KVirtualAddress end) {
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/* Initialize basic fields. */
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this->asid = 0;
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this->manager = std::addressof(Kernel::GetPageTableManager());
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/* Allocate a page for ttbr. */
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const u64 asid_tag = (static_cast<u64>(this->asid) << 48ul);
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const KVirtualAddress page = this->manager->Allocate();
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MESOSPHERE_ASSERT(page != Null<KVirtualAddress>);
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cpu::ClearPageToZero(GetVoidPointer(page));
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this->ttbr = GetInteger(KPageTableBase::GetLinearPhysicalAddress(page)) | asid_tag;
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/* Initialize the base page table. */
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MESOSPHERE_R_ABORT_UNLESS(KPageTableBase::InitializeForKernel(true, table, start, end));
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return ResultSuccess();
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}
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Result KPageTable::Finalize() {
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MESOSPHERE_TODO_IMPLEMENT();
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}
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}
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