mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 07:06:34 +00:00
481 lines
21 KiB
C++
481 lines
21 KiB
C++
/*
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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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#pragma once
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#include <mesosphere/kern_common.hpp>
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#include <mesosphere/init/kern_init_page_table_select.hpp>
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namespace ams::kern {
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constexpr size_t KernelAslrAlignment = 2_MB;
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constexpr size_t KernelVirtualAddressSpaceWidth = size_t(1ul) << 39ul;
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constexpr size_t KernelPhysicalAddressSpaceWidth = size_t(1ul) << 48ul;
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constexpr size_t KernelVirtualAddressSpaceBase = 0ul - KernelVirtualAddressSpaceWidth;
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constexpr size_t KernelVirtualAddressSpaceEnd = KernelVirtualAddressSpaceBase + (KernelVirtualAddressSpaceWidth - KernelAslrAlignment);
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constexpr size_t KernelVirtualAddressSpaceLast = KernelVirtualAddressSpaceEnd - 1ul;
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constexpr size_t KernelVirtualAddressSpaceSize = KernelVirtualAddressSpaceEnd - KernelVirtualAddressSpaceBase;
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constexpr size_t KernelPhysicalAddressSpaceBase = 0ul;
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constexpr size_t KernelPhysicalAddressSpaceEnd = KernelPhysicalAddressSpaceBase + KernelPhysicalAddressSpaceWidth;
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constexpr size_t KernelPhysicalAddressSpaceLast = KernelPhysicalAddressSpaceEnd - 1ul;
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constexpr size_t KernelPhysicalAddressSpaceSize = KernelPhysicalAddressSpaceEnd - KernelPhysicalAddressSpaceBase;
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enum KMemoryRegionType : u32 {
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KMemoryRegionAttr_CarveoutProtected = 0x04000000,
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KMemoryRegionAttr_DidKernelMap = 0x08000000,
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KMemoryRegionAttr_ShouldKernelMap = 0x10000000,
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KMemoryRegionAttr_UserReadOnly = 0x20000000,
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KMemoryRegionAttr_NoUserMap = 0x40000000,
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KMemoryRegionAttr_LinearMapped = 0x80000000,
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KMemoryRegionType_None = 0,
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KMemoryRegionType_Kernel = 1,
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KMemoryRegionType_Dram = 2,
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KMemoryRegionType_CoreLocal = 4,
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KMemoryRegionType_VirtualKernelPtHeap = 0x2A,
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KMemoryRegionType_VirtualKernelTraceBuffer = 0x4A,
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KMemoryRegionType_VirtualKernelInitPt = 0x19A,
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KMemoryRegionType_VirtualDramMetadataPool = 0x29A,
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KMemoryRegionType_VirtualDramApplicationPool = 0x271A,
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KMemoryRegionType_VirtualDramAppletPool = 0x1B1A,
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KMemoryRegionType_VirtualDramSystemNonSecurePool = 0x331A,
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KMemoryRegionType_VirtualDramSystemPool = 0x2B1A,
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KMemoryRegionType_Uart = 0x1D,
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KMemoryRegionType_InterruptDistributor = 0x4D | KMemoryRegionAttr_NoUserMap,
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KMemoryRegionType_InterruptCpuInterface = 0x2D | KMemoryRegionAttr_NoUserMap,
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KMemoryRegionType_MemoryController = 0x55,
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KMemoryRegionType_MemoryController0 = 0x95,
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KMemoryRegionType_MemoryController1 = 0x65,
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KMemoryRegionType_PowerManagementController = 0x1A5,
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KMemoryRegionType_KernelAutoMap = KMemoryRegionType_Kernel | KMemoryRegionAttr_ShouldKernelMap,
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KMemoryRegionType_KernelTemp = 0x31,
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KMemoryRegionType_KernelCode = 0x19,
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KMemoryRegionType_KernelStack = 0x29,
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KMemoryRegionType_KernelMisc = 0x49,
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KMemoryRegionType_KernelSlab = 0x89,
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KMemoryRegionType_KernelMiscMainStack = 0xB49,
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KMemoryRegionType_KernelMiscMappedDevice = 0xD49,
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KMemoryRegionType_KernelMiscIdleStack = 0x1349,
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KMemoryRegionType_KernelMiscUnknownDebug = 0x1549,
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KMemoryRegionType_KernelMiscExceptionStack = 0x2349,
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KMemoryRegionType_DramLinearMapped = KMemoryRegionType_Dram | KMemoryRegionAttr_LinearMapped,
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KMemoryRegionType_DramReservedEarly = 0x16 | KMemoryRegionAttr_NoUserMap,
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KMemoryRegionType_DramPoolPartition = 0x26 | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_LinearMapped,
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KMemoryRegionType_DramMetadataPool = 0x166 | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_LinearMapped | KMemoryRegionAttr_CarveoutProtected,
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KMemoryRegionType_DramApplicationPool = 0x7A6 | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_LinearMapped,
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KMemoryRegionType_DramAppletPool = 0xBA6 | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_LinearMapped,
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KMemoryRegionType_DramSystemNonSecurePool = 0xDA6 | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_LinearMapped,
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KMemoryRegionType_DramSystemPool = 0x13A6 | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_LinearMapped | KMemoryRegionAttr_CarveoutProtected,
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KMemoryRegionType_DramKernel = 0xE | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected,
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KMemoryRegionType_DramKernelCode = 0xCE | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected,
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KMemoryRegionType_DramKernelSlab = 0x14E | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected,
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KMemoryRegionType_DramKernelPtHeap = 0x24E | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected | KMemoryRegionAttr_LinearMapped,
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KMemoryRegionType_DramKernelInitPt = 0x44E | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected | KMemoryRegionAttr_LinearMapped,
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/* These regions aren't normally mapped in retail kernel. */
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KMemoryRegionType_KernelTraceBuffer = 0xA6 | KMemoryRegionAttr_UserReadOnly | KMemoryRegionAttr_LinearMapped,
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KMemoryRegionType_OnMemoryBootImage = 0x156,
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KMemoryRegionType_DTB = 0x256,
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};
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constexpr ALWAYS_INLINE KMemoryRegionType GetTypeForVirtualLinearMapping(u32 type_id) {
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if (type_id == (type_id | KMemoryRegionType_KernelTraceBuffer)) {
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return KMemoryRegionType_VirtualKernelTraceBuffer;
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} else if (type_id == (type_id | KMemoryRegionType_DramKernelPtHeap)) {
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return KMemoryRegionType_VirtualKernelPtHeap;
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} else {
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return KMemoryRegionType_Dram;
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}
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}
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class KMemoryRegion : public util::IntrusiveRedBlackTreeBaseNode<KMemoryRegion> {
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NON_COPYABLE(KMemoryRegion);
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NON_MOVEABLE(KMemoryRegion);
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private:
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uintptr_t address;
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uintptr_t pair_address;
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size_t region_size;
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u32 attributes;
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u32 type_id;
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public:
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static constexpr ALWAYS_INLINE int Compare(const KMemoryRegion &lhs, const KMemoryRegion &rhs) {
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if (lhs.GetAddress() < rhs.GetAddress()) {
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return -1;
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} else if (lhs.GetLastAddress() > rhs.GetLastAddress()) {
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return 1;
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} else {
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return 0;
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}
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}
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public:
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constexpr ALWAYS_INLINE KMemoryRegion() : address(0), pair_address(0), region_size(0), attributes(0), type_id(0) { /* ... */ }
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constexpr ALWAYS_INLINE KMemoryRegion(uintptr_t a, size_t rs, uintptr_t p, u32 r, u32 t) :
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address(a), pair_address(p), region_size(rs), attributes(r), type_id(t)
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{
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/* ... */
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}
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constexpr ALWAYS_INLINE KMemoryRegion(uintptr_t a, size_t rs, u32 r, u32 t) : KMemoryRegion(a, rs, std::numeric_limits<uintptr_t>::max(), r, t) { /* ... */ }
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constexpr ALWAYS_INLINE uintptr_t GetAddress() const {
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return this->address;
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}
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constexpr ALWAYS_INLINE uintptr_t GetPairAddress() const {
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return this->pair_address;
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}
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constexpr ALWAYS_INLINE size_t GetSize() const {
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return this->region_size;
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}
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constexpr ALWAYS_INLINE uintptr_t GetEndAddress() const {
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return this->GetAddress() + this->GetSize();
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}
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constexpr ALWAYS_INLINE uintptr_t GetLastAddress() const {
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return this->GetEndAddress() - 1;
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}
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constexpr ALWAYS_INLINE u32 GetAttributes() const {
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return this->attributes;
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}
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constexpr ALWAYS_INLINE u32 GetType() const {
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return this->type_id;
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}
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constexpr ALWAYS_INLINE void SetType(u32 type) {
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MESOSPHERE_INIT_ABORT_UNLESS(this->CanDerive(type));
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this->type_id = type;
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}
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constexpr ALWAYS_INLINE bool Contains(uintptr_t address) const {
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return this->GetAddress() <= address && address < this->GetLastAddress();
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}
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constexpr ALWAYS_INLINE bool IsDerivedFrom(u32 type) const {
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return (this->GetType() | type) == this->GetType();
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}
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constexpr ALWAYS_INLINE bool HasTypeAttribute(KMemoryRegionType attr) const {
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return (this->GetType() | attr) == this->GetType();
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}
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constexpr ALWAYS_INLINE bool CanDerive(u32 type) const {
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return (this->GetType() | type) == type;
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}
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constexpr ALWAYS_INLINE void SetPairAddress(uintptr_t a) {
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this->pair_address = a;
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}
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constexpr ALWAYS_INLINE void SetTypeAttribute(KMemoryRegionType attr) {
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this->type_id |= attr;
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}
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};
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static_assert(std::is_trivially_destructible<KMemoryRegion>::value);
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class KMemoryRegionTree {
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public:
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struct DerivedRegionExtents {
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const KMemoryRegion *first_region;
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const KMemoryRegion *last_region;
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constexpr DerivedRegionExtents() : first_region(nullptr), last_region(nullptr) { /* ... */ }
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constexpr ALWAYS_INLINE uintptr_t GetAddress() const {
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return this->first_region->GetAddress();
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}
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constexpr ALWAYS_INLINE uintptr_t GetEndAddress() const {
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return this->last_region->GetEndAddress();
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}
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constexpr ALWAYS_INLINE size_t GetSize() const {
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return this->GetEndAddress() - this->GetAddress();
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}
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constexpr ALWAYS_INLINE uintptr_t GetLastAddress() const {
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return this->GetEndAddress() - 1;
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}
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};
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private:
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using TreeType = util::IntrusiveRedBlackTreeBaseTraits<KMemoryRegion>::TreeType<KMemoryRegion>;
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using value_type = TreeType::value_type;
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using size_type = TreeType::size_type;
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using difference_type = TreeType::difference_type;
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using pointer = TreeType::pointer;
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using const_pointer = TreeType::const_pointer;
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using reference = TreeType::reference;
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using const_reference = TreeType::const_reference;
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using iterator = TreeType::iterator;
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using const_iterator = TreeType::const_iterator;
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private:
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TreeType tree;
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public:
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constexpr ALWAYS_INLINE KMemoryRegionTree() : tree() { /* ... */ }
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public:
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iterator FindContainingRegion(uintptr_t address) {
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auto it = this->find(KMemoryRegion(address, 1, 0, 0));
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MESOSPHERE_INIT_ABORT_UNLESS(it != this->end());
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MESOSPHERE_INIT_ABORT_UNLESS(it->Contains(address));
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return it;
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}
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iterator FindFirstRegionByTypeAttr(u32 type_id, u32 attr = 0) {
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for (auto it = this->begin(); it != this->end(); it++) {
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if (it->GetType() == type_id && it->GetAttributes() == attr) {
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return it;
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}
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}
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MESOSPHERE_INIT_ABORT();
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}
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iterator FindFirstRegionByType(u32 type_id) {
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for (auto it = this->begin(); it != this->end(); it++) {
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if (it->GetType() == type_id) {
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return it;
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}
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}
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MESOSPHERE_INIT_ABORT();
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}
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iterator FindFirstDerivedRegion(u32 type_id) {
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for (auto it = this->begin(); it != this->end(); it++) {
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if (it->IsDerivedFrom(type_id)) {
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return it;
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}
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}
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MESOSPHERE_INIT_ABORT();
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}
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DerivedRegionExtents GetDerivedRegionExtents(u32 type_id) {
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DerivedRegionExtents extents;
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MESOSPHERE_INIT_ABORT_UNLESS(extents.first_region == nullptr);
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MESOSPHERE_INIT_ABORT_UNLESS(extents.last_region == nullptr);
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for (auto it = this->cbegin(); it != this->cend(); it++) {
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if (it->IsDerivedFrom(type_id)) {
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if (extents.first_region == nullptr) {
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extents.first_region = std::addressof(*it);
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}
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extents.last_region = std::addressof(*it);
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}
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}
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MESOSPHERE_INIT_ABORT_UNLESS(extents.first_region != nullptr);
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MESOSPHERE_INIT_ABORT_UNLESS(extents.last_region != nullptr);
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return extents;
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}
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public:
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NOINLINE bool Insert(uintptr_t address, size_t size, u32 type_id, u32 new_attr = 0, u32 old_attr = 0);
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NOINLINE KVirtualAddress GetRandomAlignedRegion(size_t size, size_t alignment, u32 type_id);
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ALWAYS_INLINE KVirtualAddress GetRandomAlignedRegionWithGuard(size_t size, size_t alignment, u32 type_id, size_t guard_size) {
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return this->GetRandomAlignedRegion(size + 2 * guard_size, alignment, type_id) + guard_size;
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}
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public:
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/* Iterator accessors. */
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iterator begin() {
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return this->tree.begin();
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}
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const_iterator begin() const {
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return this->tree.begin();
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}
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iterator end() {
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return this->tree.end();
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}
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const_iterator end() const {
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return this->tree.end();
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}
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const_iterator cbegin() const {
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return this->begin();
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}
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const_iterator cend() const {
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return this->end();
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}
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iterator iterator_to(reference ref) {
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return this->tree.iterator_to(ref);
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}
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const_iterator iterator_to(const_reference ref) const {
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return this->tree.iterator_to(ref);
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}
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/* Content management. */
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bool empty() const {
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return this->tree.empty();
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}
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reference back() {
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return this->tree.back();
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}
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const_reference back() const {
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return this->tree.back();
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}
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reference front() {
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return this->tree.front();
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}
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const_reference front() const {
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return this->tree.front();
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}
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/* GCC over-eagerly inlines this operation. */
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NOINLINE iterator insert(reference ref) {
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return this->tree.insert(ref);
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}
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NOINLINE iterator erase(iterator it) {
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return this->tree.erase(it);
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}
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iterator find(const_reference ref) const {
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return this->tree.find(ref);
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}
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iterator nfind(const_reference ref) const {
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return this->tree.nfind(ref);
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}
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};
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class KMemoryRegionAllocator {
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NON_COPYABLE(KMemoryRegionAllocator);
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NON_MOVEABLE(KMemoryRegionAllocator);
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public:
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static constexpr size_t MaxMemoryRegions = 1000;
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friend class KMemoryLayout;
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private:
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KMemoryRegion region_heap[MaxMemoryRegions];
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size_t num_regions;
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private:
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constexpr ALWAYS_INLINE KMemoryRegionAllocator() : region_heap(), num_regions() { /* ... */ }
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public:
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ALWAYS_INLINE KMemoryRegion *Allocate() {
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/* Ensure we stay within the bounds of our heap. */
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MESOSPHERE_INIT_ABORT_UNLESS(this->num_regions < MaxMemoryRegions);
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return &this->region_heap[this->num_regions++];
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}
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template<typename... Args>
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ALWAYS_INLINE KMemoryRegion *Create(Args&&... args) {
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KMemoryRegion *region = this->Allocate();
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new (region) KMemoryRegion(std::forward<Args>(args)...);
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return region;
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}
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};
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class KMemoryLayout {
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private:
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static /* constinit */ inline uintptr_t s_linear_phys_to_virt_diff;
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static /* constinit */ inline uintptr_t s_linear_virt_to_phys_diff;
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static /* constinit */ inline KMemoryRegionAllocator s_region_allocator;
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static /* constinit */ inline KMemoryRegionTree s_virtual_tree;
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static /* constinit */ inline KMemoryRegionTree s_physical_tree;
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static /* constinit */ inline KMemoryRegionTree s_virtual_linear_tree;
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static /* constinit */ inline KMemoryRegionTree s_physical_linear_tree;
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public:
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static ALWAYS_INLINE KMemoryRegionAllocator &GetMemoryRegionAllocator() { return s_region_allocator; }
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static ALWAYS_INLINE KMemoryRegionTree &GetVirtualMemoryRegionTree() { return s_virtual_tree; }
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static ALWAYS_INLINE KMemoryRegionTree &GetPhysicalMemoryRegionTree() { return s_physical_tree; }
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static ALWAYS_INLINE KMemoryRegionTree &GetVirtualLinearMemoryRegionTree() { return s_virtual_linear_tree; }
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static ALWAYS_INLINE KMemoryRegionTree &GetPhysicalLinearMemoryRegionTree() { return s_physical_linear_tree; }
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static ALWAYS_INLINE KVirtualAddress GetLinearVirtualAddress(KPhysicalAddress address) {
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return GetInteger(address) + s_linear_phys_to_virt_diff;
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}
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static ALWAYS_INLINE KPhysicalAddress GetLinearPhysicalAddress(KVirtualAddress address) {
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return GetInteger(address) + s_linear_virt_to_phys_diff;
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}
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static NOINLINE KVirtualAddress GetMainStackTopAddress(s32 core_id) {
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return GetVirtualMemoryRegionTree().FindFirstRegionByTypeAttr(KMemoryRegionType_KernelMiscMainStack, static_cast<u32>(core_id))->GetEndAddress();
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}
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static NOINLINE KVirtualAddress GetIdleStackTopAddress(s32 core_id) {
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return GetVirtualMemoryRegionTree().FindFirstRegionByTypeAttr(KMemoryRegionType_KernelMiscIdleStack, static_cast<u32>(core_id))->GetEndAddress();
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}
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static NOINLINE KVirtualAddress GetExceptionStackBottomAddress(s32 core_id) {
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return GetVirtualMemoryRegionTree().FindFirstRegionByTypeAttr(KMemoryRegionType_KernelMiscExceptionStack, static_cast<u32>(core_id))->GetAddress();
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}
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static NOINLINE KVirtualAddress GetSlabRegionAddress() {
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return GetVirtualMemoryRegionTree().FindFirstRegionByType(KMemoryRegionType_KernelSlab)->GetAddress();
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}
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static NOINLINE KVirtualAddress GetCoreLocalRegionAddress() {
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return GetVirtualMemoryRegionTree().FindFirstRegionByType(KMemoryRegionType_CoreLocal)->GetAddress();
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}
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static NOINLINE KVirtualAddress GetInterruptDistributorAddress() {
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return GetPhysicalMemoryRegionTree().FindFirstDerivedRegion(KMemoryRegionType_InterruptDistributor)->GetPairAddress();
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}
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static NOINLINE KVirtualAddress GetInterruptCpuInterfaceAddress() {
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return GetPhysicalMemoryRegionTree().FindFirstDerivedRegion(KMemoryRegionType_InterruptCpuInterface)->GetPairAddress();
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}
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static NOINLINE KVirtualAddress GetUartAddress() {
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return GetPhysicalMemoryRegionTree().FindFirstDerivedRegion(KMemoryRegionType_Uart)->GetPairAddress();
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}
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static NOINLINE auto GetCarveoutRegionExtents() {
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return GetVirtualMemoryRegionTree().GetDerivedRegionExtents(KMemoryRegionAttr_CarveoutProtected);
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}
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static void InitializeLinearMemoryRegionTrees(KPhysicalAddress aligned_linear_phys_start, KVirtualAddress linear_virtual_start);
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};
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namespace init {
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/* These should be generic, regardless of board. */
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void SetupCoreLocalRegionMemoryRegions(KInitialPageTable &page_table, KInitialPageAllocator &page_allocator);
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void SetupPoolPartitionMemoryRegions();
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|
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/* These may be implemented in a board-specific manner. */
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void SetupDevicePhysicalMemoryRegions();
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void SetupDramPhysicalMemoryRegions();
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|
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}
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}
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