2020-05-13 02:14:46 +02:00
|
|
|
/*
|
|
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
|
|
* under the terms and conditions of the GNU General Public License,
|
|
|
|
* version 2, as published by the Free Software Foundation.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
|
|
* more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
#include <exosphere.hpp>
|
|
|
|
#include "secmon_cache.hpp"
|
|
|
|
#include "secmon_map.hpp"
|
|
|
|
|
|
|
|
namespace ams::secmon {
|
|
|
|
|
|
|
|
namespace {
|
|
|
|
|
|
|
|
using namespace ams::mmu;
|
|
|
|
|
|
|
|
constexpr void UnmapBootCodeImpl(u64 *l1, u64 *l2, u64 *l3, uintptr_t boot_code, size_t boot_code_size) {
|
|
|
|
/* Unmap the L3 entries corresponding to the boot code. */
|
|
|
|
InvalidateL3Entries(l3, boot_code, boot_code_size);
|
|
|
|
}
|
|
|
|
|
2020-05-13 19:56:07 +02:00
|
|
|
constexpr void UnmapTzramImpl(u64 *l1, u64 *l2, u64 *l3) {
|
|
|
|
/* Unmap the L3 entries corresponding to tzram. */
|
|
|
|
InvalidateL3Entries(l3, MemoryRegionPhysicalTzram.GetAddress(), MemoryRegionPhysicalTzram.GetSize());
|
|
|
|
|
|
|
|
/* Unmap the L2 entries corresponding to those L3 entries. */
|
|
|
|
InvalidateL2Entries(l2, MemoryRegionPhysicalTzramL2.GetAddress(), MemoryRegionPhysicalTzramL2.GetSize());
|
|
|
|
|
|
|
|
/* Unmap the L1 entry corresponding to to those L2 entries. */
|
|
|
|
InvalidateL1Entries(l1, MemoryRegionPhysical.GetAddress(), MemoryRegionPhysical.GetSize());
|
|
|
|
}
|
|
|
|
|
2020-05-13 02:14:46 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
void UnmapBootCode() {
|
|
|
|
/* Get the tables. */
|
|
|
|
u64 * const l1 = MemoryRegionVirtualTzramL1PageTable.GetPointer<u64>();
|
|
|
|
u64 * const l2_l3 = MemoryRegionVirtualTzramL2L3PageTable.GetPointer<u64>();
|
|
|
|
|
|
|
|
/* Get the boot code region. */
|
|
|
|
const uintptr_t boot_code = MemoryRegionVirtualTzramBootCode.GetAddress();
|
|
|
|
const size_t boot_code_size = MemoryRegionVirtualTzramBootCode.GetSize();
|
|
|
|
|
|
|
|
/* Clear the boot code. */
|
|
|
|
util::ClearMemory(reinterpret_cast<void *>(boot_code), boot_code_size);
|
|
|
|
|
|
|
|
/* Unmap. */
|
|
|
|
UnmapBootCodeImpl(l1, l2_l3, l2_l3, boot_code, boot_code_size);
|
|
|
|
|
|
|
|
/* Ensure the mappings are consistent. */
|
|
|
|
secmon::EnsureMappingConsistency();
|
|
|
|
}
|
|
|
|
|
2020-05-13 19:56:07 +02:00
|
|
|
void UnmapTzram() {
|
|
|
|
/* Get the tables. */
|
|
|
|
u64 * const l1 = MemoryRegionVirtualTzramL1PageTable.GetPointer<u64>();
|
|
|
|
u64 * const l2_l3 = MemoryRegionVirtualTzramL2L3PageTable.GetPointer<u64>();
|
|
|
|
|
|
|
|
/* Unmap. */
|
|
|
|
UnmapTzramImpl(l1, l2_l3, l2_l3);
|
|
|
|
|
|
|
|
/* Ensure the mappings are consistent. */
|
|
|
|
secmon::EnsureMappingConsistency();
|
|
|
|
}
|
|
|
|
|
2020-05-13 02:14:46 +02:00
|
|
|
}
|