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kern: update Initialize0 for new changes

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Michael Scire 2021-04-07 11:25:49 -07:00 committed by SciresM
parent 504472af4e
commit a1e137cc1c
5 changed files with 147 additions and 60 deletions
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9
libraries/libmesosphere/include/mesosphere/kern_k_memory_region_type.hpp
View file

@ -21,7 +21,8 @@ namespace ams::kern {
enum KMemoryRegionType : u32 {}; enum KMemoryRegionType : u32 {};
enum KMemoryRegionAttr : typename std::underlying_type<KMemoryRegionType>::type { enum KMemoryRegionAttr : typename std::underlying_type<KMemoryRegionType>::type {
KMemoryRegionAttr_CarveoutProtected = 0x04000000, KMemoryRegionAttr_CarveoutProtected = 0x02000000,
KMemoryRegionAttr_Uncached = 0x04000000,
KMemoryRegionAttr_DidKernelMap = 0x08000000, KMemoryRegionAttr_DidKernelMap = 0x08000000,
KMemoryRegionAttr_ShouldKernelMap = 0x10000000, KMemoryRegionAttr_ShouldKernelMap = 0x10000000,
KMemoryRegionAttr_UserReadOnly = 0x20000000, KMemoryRegionAttr_UserReadOnly = 0x20000000,
@ -216,6 +217,10 @@ namespace ams::kern {
static_assert(KMemoryRegionType_VirtualDramKernelPtHeap .GetValue() == 0x2A); static_assert(KMemoryRegionType_VirtualDramKernelPtHeap .GetValue() == 0x2A);
static_assert(KMemoryRegionType_VirtualDramKernelTraceBuffer.GetValue() == 0x4A); static_assert(KMemoryRegionType_VirtualDramKernelTraceBuffer.GetValue() == 0x4A);
/* UNUSED: .DeriveSparse(2, 2, 0); */
constexpr inline const auto KMemoryRegionType_VirtualDramUnknownDebug = KMemoryRegionType_Dram.DeriveSparse(2, 2, 1);
static_assert(KMemoryRegionType_VirtualDramUnknownDebug.GetValue() == (0x52));
constexpr inline const auto KMemoryRegionType_VirtualDramKernelInitPt = KMemoryRegionType_VirtualDramHeapBase.Derive(3, 0); constexpr inline const auto KMemoryRegionType_VirtualDramKernelInitPt = KMemoryRegionType_VirtualDramHeapBase.Derive(3, 0);
constexpr inline const auto KMemoryRegionType_VirtualDramPoolManagement = KMemoryRegionType_VirtualDramHeapBase.Derive(3, 1); constexpr inline const auto KMemoryRegionType_VirtualDramPoolManagement = KMemoryRegionType_VirtualDramHeapBase.Derive(3, 1);
constexpr inline const auto KMemoryRegionType_VirtualDramUserPool = KMemoryRegionType_VirtualDramHeapBase.Derive(3, 2); constexpr inline const auto KMemoryRegionType_VirtualDramUserPool = KMemoryRegionType_VirtualDramHeapBase.Derive(3, 2);
@ -292,6 +297,8 @@ namespace ams::kern {
return KMemoryRegionType_VirtualDramKernelTraceBuffer; return KMemoryRegionType_VirtualDramKernelTraceBuffer;
} else if (KMemoryRegionType_DramKernelPtHeap.IsAncestorOf(type_id)) { } else if (KMemoryRegionType_DramKernelPtHeap.IsAncestorOf(type_id)) {
return KMemoryRegionType_VirtualDramKernelPtHeap; return KMemoryRegionType_VirtualDramKernelPtHeap;
} else if ((type_id | KMemoryRegionAttr_ShouldKernelMap) == type_id) {
return KMemoryRegionType_VirtualDramUnknownDebug;
} else { } else {
return KMemoryRegionType_Dram; return KMemoryRegionType_Dram;
} }

8
libraries/libmesosphere/source/arch/arm64/kern_k_page_table.cpp
View file

@ -556,13 +556,13 @@ namespace ams::kern::arch::arm64 {
/* If we're not forcing an unmap, separate pages immediately. */ /* If we're not forcing an unmap, separate pages immediately. */
if (!force) { if (!force) {
const size_t size = num_pages * PageSize; const size_t size = num_pages * PageSize;
R_TRY(this->SeparatePages(virt_addr, std::min(GetInteger(virt_addr) & -GetInteger(virt_addr), size), page_list, reuse_ll)); R_TRY(this->SeparatePages(virt_addr, std::min(util::GetAlignment(GetInteger(virt_addr)), size), page_list, reuse_ll));
if (num_pages > 1) { if (num_pages > 1) {
const auto end_page = virt_addr + size; const auto end_page = virt_addr + size;
const auto last_page = end_page - PageSize; const auto last_page = end_page - PageSize;
auto merge_guard = SCOPE_GUARD { this->MergePages(virt_addr, page_list); }; auto merge_guard = SCOPE_GUARD { this->MergePages(virt_addr, page_list); };
R_TRY(this->SeparatePages(last_page, std::min(GetInteger(end_page) & -GetInteger(end_page), size), page_list, reuse_ll)); R_TRY(this->SeparatePages(last_page, std::min(util::GetAlignment(GetInteger(end_page)), size), page_list, reuse_ll));
merge_guard.Cancel(); merge_guard.Cancel();
} }
} }
@ -1194,13 +1194,13 @@ namespace ams::kern::arch::arm64 {
/* Separate pages before we change permissions. */ /* Separate pages before we change permissions. */
const size_t size = num_pages * PageSize; const size_t size = num_pages * PageSize;
R_TRY(this->SeparatePages(virt_addr, std::min(GetInteger(virt_addr) & -GetInteger(virt_addr), size), page_list, reuse_ll)); R_TRY(this->SeparatePages(virt_addr, std::min(util::GetAlignment(GetInteger(virt_addr)), size), page_list, reuse_ll));
if (num_pages > 1) { if (num_pages > 1) {
const auto end_page = virt_addr + size; const auto end_page = virt_addr + size;
const auto last_page = end_page - PageSize; const auto last_page = end_page - PageSize;
auto merge_guard = SCOPE_GUARD { this->MergePages(virt_addr, page_list); }; auto merge_guard = SCOPE_GUARD { this->MergePages(virt_addr, page_list); };
R_TRY(this->SeparatePages(last_page, std::min(GetInteger(end_page) & -GetInteger(end_page), size), page_list, reuse_ll)); R_TRY(this->SeparatePages(last_page, std::min(util::GetAlignment(GetInteger(end_page)), size), page_list, reuse_ll));
merge_guard.Cancel(); merge_guard.Cancel();
} }

4
libraries/libmesosphere/source/kern_k_page_table_base.cpp
View file

@ -1810,7 +1810,7 @@ namespace ams::kern {
/* Select an address to map at. */ /* Select an address to map at. */
KProcessAddress addr = Null<KProcessAddress>; KProcessAddress addr = Null<KProcessAddress>;
const size_t phys_alignment = std::min(std::min(GetInteger(phys_addr) & -GetInteger(phys_addr), size & -size), MaxPhysicalMapAlignment); const size_t phys_alignment = std::min(std::min(util::GetAlignment(GetInteger(phys_addr)), util::GetAlignment(size)), MaxPhysicalMapAlignment);
for (s32 block_type = KPageTable::GetMaxBlockType(); block_type >= 0; block_type--) { for (s32 block_type = KPageTable::GetMaxBlockType(); block_type >= 0; block_type--) {
const size_t alignment = KPageTable::GetBlockSize(static_cast<KPageTable::BlockType>(block_type)); const size_t alignment = KPageTable::GetBlockSize(static_cast<KPageTable::BlockType>(block_type));
if (alignment > phys_alignment) { if (alignment > phys_alignment) {
@ -1892,7 +1892,7 @@ namespace ams::kern {
/* Select an address to map at. */ /* Select an address to map at. */
KProcessAddress addr = Null<KProcessAddress>; KProcessAddress addr = Null<KProcessAddress>;
const size_t phys_alignment = std::min(std::min(GetInteger(phys_addr) & -GetInteger(phys_addr), size & -size), MaxPhysicalMapAlignment); const size_t phys_alignment = std::min(std::min(util::GetAlignment(GetInteger(phys_addr)), util::GetAlignment(size)), MaxPhysicalMapAlignment);
for (s32 block_type = KPageTable::GetMaxBlockType(); block_type >= 0; block_type--) { for (s32 block_type = KPageTable::GetMaxBlockType(); block_type >= 0; block_type--) {
const size_t alignment = KPageTable::GetBlockSize(static_cast<KPageTable::BlockType>(block_type)); const size_t alignment = KPageTable::GetBlockSize(static_cast<KPageTable::BlockType>(block_type));
if (alignment > phys_alignment) { if (alignment > phys_alignment) {

5
libraries/libvapours/include/vapours/util/util_alignment.hpp
View file

@ -43,6 +43,11 @@ namespace ams::util {
return (value & invmask) == 0; return (value & invmask) == 0;
} }
template<typename T> requires std::unsigned_integral<T>
constexpr ALWAYS_INLINE T GetAlignment(T value) {
return value & -value;
}
template<> template<>
constexpr ALWAYS_INLINE void *AlignUp<void *>(void *value, size_t alignment) { constexpr ALWAYS_INLINE void *AlignUp<void *>(void *value, size_t alignment) {
return reinterpret_cast<void *>(AlignUp(reinterpret_cast<uintptr_t>(value), alignment)); return reinterpret_cast<void *>(AlignUp(reinterpret_cast<uintptr_t>(value), alignment));

181
mesosphere/kernel/source/arch/arm64/init/kern_init_core.cpp
View file

@ -46,6 +46,8 @@ namespace ams::kern::init {
constexpr PageTableEntry KernelRwDataAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_NormalMemory, PageTableEntry::Shareable_InnerShareable, PageTableEntry::MappingFlag_Mapped); constexpr PageTableEntry KernelRwDataAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_NormalMemory, PageTableEntry::Shareable_InnerShareable, PageTableEntry::MappingFlag_Mapped);
constexpr PageTableEntry KernelMmioAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_Device_nGnRE, PageTableEntry::Shareable_OuterShareable, PageTableEntry::MappingFlag_Mapped); constexpr PageTableEntry KernelMmioAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_Device_nGnRE, PageTableEntry::Shareable_OuterShareable, PageTableEntry::MappingFlag_Mapped);
constexpr PageTableEntry KernelRwDataUncachedAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_NormalMemoryNotCacheable, PageTableEntry::Shareable_InnerShareable, PageTableEntry::MappingFlag_Mapped);
void MapStackForCore(KInitialPageTable &page_table, KMemoryRegionType type, u32 core_id) { void MapStackForCore(KInitialPageTable &page_table, KMemoryRegionType type, u32 core_id) {
constexpr size_t StackSize = PageSize; constexpr size_t StackSize = PageSize;
constexpr size_t StackAlign = PageSize; constexpr size_t StackAlign = PageSize;
@ -77,8 +79,8 @@ namespace ams::kern::init {
} }
} }
void SetupInitialArguments(KInitialPageTable &ttbr1_table, KInitialPageAllocator &allocator) { void SetupInitialArguments(KInitialPageTable &init_pt, KInitialPageAllocator &allocator) {
AMS_UNUSED(ttbr1_table, allocator); AMS_UNUSED(init_pt, allocator);
/* Get parameters for initial arguments. */ /* Get parameters for initial arguments. */
const u64 ttbr0 = cpu::GetTtbr0El1(); const u64 ttbr0 = cpu::GetTtbr0El1();
@ -98,7 +100,7 @@ namespace ams::kern::init {
/* if (cpu::GetPhysicalAddressWritable(std::addressof(phys_addr), KVirtualAddress(init_args), true)) { */ /* if (cpu::GetPhysicalAddressWritable(std::addressof(phys_addr), KVirtualAddress(init_args), true)) { */
/* g_init_arguments_phys_addr[i] = phys_addr; */ /* g_init_arguments_phys_addr[i] = phys_addr; */
/* } */ /* } */
g_init_arguments_phys_addr[i] = ttbr1_table.GetPhysicalAddress(KVirtualAddress(init_args)); g_init_arguments_phys_addr[i] = init_pt.GetPhysicalAddress(KVirtualAddress(init_args));
/* Set the arguments. */ /* Set the arguments. */
init_args->ttbr0 = ttbr0; init_args->ttbr0 = ttbr0;
@ -122,7 +124,7 @@ namespace ams::kern::init {
} }
void InitializeCore(uintptr_t misc_unk_debug_phys_addr, uintptr_t initial_page_allocator_state) { void InitializeCore(uintptr_t misc_unk_debug_phys_addr, uintptr_t initial_page_allocator_state) {
/* Ensure our first argument is page aligned (as we will map it if it is non-zero). */ /* Ensure our first argument is page aligned. */
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(misc_unk_debug_phys_addr, PageSize)); MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(misc_unk_debug_phys_addr, PageSize));
/* Restore the page allocator state setup by kernel loader. */ /* Restore the page allocator state setup by kernel loader. */
@ -132,7 +134,7 @@ namespace ams::kern::init {
MESOSPHERE_INIT_ABORT_UNLESS((cpu::TranslationControlRegisterAccessor().GetT1Size() / arch::arm64::L1BlockSize) == arch::arm64::MaxPageTableEntries); MESOSPHERE_INIT_ABORT_UNLESS((cpu::TranslationControlRegisterAccessor().GetT1Size() / arch::arm64::L1BlockSize) == arch::arm64::MaxPageTableEntries);
/* Create page table object for use during initialization. */ /* Create page table object for use during initialization. */
KInitialPageTable ttbr1_table; KInitialPageTable init_pt;
/* Initialize the slab allocator counts. */ /* Initialize the slab allocator counts. */
InitializeSlabResourceCounts(); InitializeSlabResourceCounts();
@ -180,7 +182,14 @@ namespace ams::kern::init {
MESOSPHERE_INIT_ABORT_UNLESS(region.GetEndAddress() != 0); MESOSPHERE_INIT_ABORT_UNLESS(region.GetEndAddress() != 0);
/* Account for the region. */ /* Account for the region. */
misc_region_needed_size += PageSize + (util::AlignUp(region.GetLastAddress(), PageSize) - util::AlignDown(region.GetAddress(), PageSize)); const auto aligned_start = util::AlignDown(region.GetAddress(), PageSize);
const auto aligned_end = util::AlignUp(region.GetLastAddress(), PageSize);
const size_t cur_region_size = aligned_end - aligned_start;
misc_region_needed_size += cur_region_size;
/* Account for alignment requirements. */
const size_t min_align = std::min<size_t>(util::GetAlignment(cur_region_size), util::GetAlignment(aligned_start));
misc_region_needed_size += min_align >= KernelAslrAlignment ? KernelAslrAlignment : PageSize;
} }
} }
@ -215,7 +224,7 @@ namespace ams::kern::init {
MESOSPHERE_INIT_ABORT_UNLESS(slab_region_size <= resource_region_size); MESOSPHERE_INIT_ABORT_UNLESS(slab_region_size <= resource_region_size);
/* Setup the slab region. */ /* Setup the slab region. */
const KPhysicalAddress code_start_phys_addr = ttbr1_table.GetPhysicalAddressOfRandomizedRange(code_start_virt_addr, code_region_size); const KPhysicalAddress code_start_phys_addr = init_pt.GetPhysicalAddressOfRandomizedRange(code_start_virt_addr, code_region_size);
const KPhysicalAddress code_end_phys_addr = code_start_phys_addr + code_region_size; const KPhysicalAddress code_end_phys_addr = code_start_phys_addr + code_region_size;
const KPhysicalAddress slab_start_phys_addr = code_end_phys_addr; const KPhysicalAddress slab_start_phys_addr = code_end_phys_addr;
const KPhysicalAddress slab_end_phys_addr = slab_start_phys_addr + slab_region_size; const KPhysicalAddress slab_end_phys_addr = slab_start_phys_addr + slab_region_size;
@ -230,52 +239,116 @@ namespace ams::kern::init {
const KVirtualAddress temp_region_start = KMemoryLayout::GetVirtualMemoryRegionTree().GetRandomAlignedRegion(TempRegionSize, TempRegionAlign, KMemoryRegionType_Kernel); const KVirtualAddress temp_region_start = KMemoryLayout::GetVirtualMemoryRegionTree().GetRandomAlignedRegion(TempRegionSize, TempRegionAlign, KMemoryRegionType_Kernel);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(GetInteger(temp_region_start), TempRegionSize, KMemoryRegionType_KernelTemp)); MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(GetInteger(temp_region_start), TempRegionSize, KMemoryRegionType_KernelTemp));
/* Setup the Misc Unknown Debug region, if it's not zero. */ /* Automatically map in devices that have auto-map attributes, from largest region to smallest region. */
if (misc_unk_debug_phys_addr) { {
constexpr size_t MiscUnknownDebugRegionAlign = PageSize; /* We want to map the regions from largest to smallest. */
const size_t misc_unk_debug_size = GetMiscUnknownDebugRegionSize(); KMemoryRegion *largest;
const KVirtualAddress misc_unk_debug_virt_addr = KMemoryLayout::GetVirtualMemoryRegionTree().GetRandomAlignedRegionWithGuard(misc_unk_debug_size, MiscUnknownDebugRegionAlign, KMemoryRegionType_KernelMisc, PageSize); do {
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(GetInteger(misc_unk_debug_virt_addr), misc_unk_debug_size, KMemoryRegionType_KernelMiscUnknownDebug)); /* Begin with no knowledge of the largest region. */
ttbr1_table.Map(misc_unk_debug_virt_addr, misc_unk_debug_size, misc_unk_debug_phys_addr, KernelRoDataAttribute, g_initial_page_allocator); largest = nullptr;
}
/* Automatically map in devices that have auto-map attributes. */ for (auto &region : KMemoryLayout::GetPhysicalMemoryRegionTree()) {
for (auto &region : KMemoryLayout::GetPhysicalMemoryRegionTree()) { /* We only care about kernel regions. */
/* We only care about kernel regions. */ if (!region.IsDerivedFrom(KMemoryRegionType_Kernel)) {
if (!region.IsDerivedFrom(KMemoryRegionType_Kernel)) { continue;
continue; }
}
/* Check whether we should map the region. */ /* Check whether we should map the region. */
if (!region.HasTypeAttribute(KMemoryRegionAttr_ShouldKernelMap)) { if (!region.HasTypeAttribute(KMemoryRegionAttr_ShouldKernelMap)) {
continue; continue;
} }
/* If this region has already been mapped, no need to consider it. */ /* If this region has already been mapped, no need to consider it. */
if (region.HasTypeAttribute(KMemoryRegionAttr_DidKernelMap)) { if (region.HasTypeAttribute(KMemoryRegionAttr_DidKernelMap)) {
continue; continue;
} }
/* Check that the region is valid. */ /* Check that the region is valid. */
MESOSPHERE_INIT_ABORT_UNLESS(region.GetEndAddress() != 0); MESOSPHERE_INIT_ABORT_UNLESS(region.GetEndAddress() != 0);
/* Set the attribute to note we've mapped this region. */ /* Update the largest region. */
region.SetTypeAttribute(KMemoryRegionAttr_DidKernelMap); if (largest == nullptr || largest->GetSize() < region.GetSize()) {
largest = std::addressof(region);
}
}
/* Create a virtual pair region and insert it into the tree. */ /* If we found a region, map it. */
const KPhysicalAddress map_phys_addr = util::AlignDown(region.GetAddress(), PageSize); if (largest != nullptr) {
const size_t map_size = util::AlignUp(region.GetEndAddress(), PageSize) - GetInteger(map_phys_addr); /* Set the attribute to note we've mapped this region. */
const KVirtualAddress map_virt_addr = KMemoryLayout::GetVirtualMemoryRegionTree().GetRandomAlignedRegionWithGuard(map_size, PageSize, KMemoryRegionType_KernelMisc, PageSize); largest->SetTypeAttribute(KMemoryRegionAttr_DidKernelMap);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(GetInteger(map_virt_addr), map_size, KMemoryRegionType_KernelMiscMappedDevice));
region.SetPairAddress(GetInteger(map_virt_addr) + region.GetAddress() - GetInteger(map_phys_addr));
/* Map the page in to our page table. */ /* Create a virtual pair region and insert it into the tree. */
ttbr1_table.Map(map_virt_addr, map_size, map_phys_addr, KernelMmioAttribute, g_initial_page_allocator); const KPhysicalAddress map_phys_addr = util::AlignDown(largest->GetAddress(), PageSize);
const size_t map_size = util::AlignUp(largest->GetEndAddress(), PageSize) - GetInteger(map_phys_addr);
const size_t min_align = std::min<size_t>(util::GetAlignment(map_size), util::GetAlignment(GetInteger(map_phys_addr)));
const size_t map_align = min_align >= KernelAslrAlignment ? KernelAslrAlignment : PageSize;
const KVirtualAddress map_virt_addr = KMemoryLayout::GetVirtualMemoryRegionTree().GetRandomAlignedRegionWithGuard(map_size, map_align, KMemoryRegionType_KernelMisc, map_align);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(GetInteger(map_virt_addr), map_size, KMemoryRegionType_KernelMiscMappedDevice));
largest->SetPairAddress(GetInteger(map_virt_addr) + largest->GetAddress() - GetInteger(map_phys_addr));
/* Map the page in to our page table. */
init_pt.Map(map_virt_addr, map_size, map_phys_addr, KernelMmioAttribute, g_initial_page_allocator);
}
} while (largest != nullptr);
} }
/* Setup the basic DRAM regions. */ /* Setup the basic DRAM regions. */
SetupDramPhysicalMemoryRegions(); SetupDramPhysicalMemoryRegions();
/* Automatically map in reserved physical memory that has auto-map attributes. */
{
/* We want to map the regions from largest to smallest. */
KMemoryRegion *largest;
do {
/* Begin with no knowledge of the largest region. */
largest = nullptr;
for (auto &region : KMemoryLayout::GetPhysicalMemoryRegionTree()) {
/* We only care about reserved memory. */
if (!region.IsDerivedFrom(KMemoryRegionType_DramReservedBase)) {
continue;
}
/* Check whether we should map the region. */
if (!region.HasTypeAttribute(KMemoryRegionAttr_ShouldKernelMap)) {
continue;
}
/* If this region has already been mapped, no need to consider it. */
if (region.HasTypeAttribute(KMemoryRegionAttr_DidKernelMap)) {
continue;
}
/* Check that the region is valid. */
MESOSPHERE_INIT_ABORT_UNLESS(region.GetEndAddress() != 0);
/* Update the largest region. */
if (largest == nullptr || largest->GetSize() < region.GetSize()) {
largest = std::addressof(region);
}
}
/* If we found a region, map it. */
if (largest != nullptr) {
/* Set the attribute to note we've mapped this region. */
largest->SetTypeAttribute(KMemoryRegionAttr_DidKernelMap);
/* Create a virtual pair region and insert it into the tree. */
const KPhysicalAddress map_phys_addr = util::AlignDown(largest->GetAddress(), PageSize);
const size_t map_size = util::AlignUp(largest->GetEndAddress(), PageSize) - GetInteger(map_phys_addr);
const size_t min_align = std::min<size_t>(util::GetAlignment(map_size), util::GetAlignment(GetInteger(map_phys_addr)));
const size_t map_align = min_align >= KernelAslrAlignment ? KernelAslrAlignment : PageSize;
const KVirtualAddress map_virt_addr = KMemoryLayout::GetVirtualMemoryRegionTree().GetRandomAlignedRegionWithGuard(map_size, map_align, KMemoryRegionType_KernelMisc, map_align);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(GetInteger(map_virt_addr), map_size, KMemoryRegionType_KernelMiscUnknownDebug));
largest->SetPairAddress(GetInteger(map_virt_addr) + largest->GetAddress() - GetInteger(map_phys_addr));
/* Map the page in to our page table. */
const auto attribute = largest->HasTypeAttribute(KMemoryRegionAttr_Uncached) ? KernelRwDataUncachedAttribute : KernelRwDataAttribute;
init_pt.Map(map_virt_addr, map_size, map_phys_addr, attribute, g_initial_page_allocator);
}
} while (largest != nullptr);
}
/* Insert a physical region for the kernel code region. */ /* Insert a physical region for the kernel code region. */
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(GetInteger(code_start_phys_addr), code_region_size, KMemoryRegionType_DramKernelCode)); MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(GetInteger(code_start_phys_addr), code_region_size, KMemoryRegionType_DramKernelCode));
@ -283,11 +356,11 @@ namespace ams::kern::init {
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(GetInteger(slab_start_phys_addr), slab_region_size, KMemoryRegionType_DramKernelSlab)); MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(GetInteger(slab_start_phys_addr), slab_region_size, KMemoryRegionType_DramKernelSlab));
/* Map the slab region. */ /* Map the slab region. */
ttbr1_table.Map(slab_region_start, slab_region_size, slab_start_phys_addr, KernelRwDataAttribute, g_initial_page_allocator); init_pt.Map(slab_region_start, slab_region_size, slab_start_phys_addr, KernelRwDataAttribute, g_initial_page_allocator);
/* Physically randomize the slab region. */ /* Physically randomize the slab region. */
/* NOTE: Nintendo does this only on 10.0.0+ */ /* NOTE: Nintendo does this only on 10.0.0+ */
ttbr1_table.PhysicallyRandomize(slab_region_start, slab_region_size, false); init_pt.PhysicallyRandomize(slab_region_start, slab_region_size, false);
/* Determine size available for kernel page table heaps, requiring > 8 MB. */ /* Determine size available for kernel page table heaps, requiring > 8 MB. */
const KPhysicalAddress resource_end_phys_addr = slab_start_phys_addr + resource_region_size; const KPhysicalAddress resource_end_phys_addr = slab_start_phys_addr + resource_region_size;
@ -338,14 +411,16 @@ namespace ams::kern::init {
cur_size += region.GetSize(); cur_size += region.GetSize();
} else { } else {
const uintptr_t cur_virt_addr = cur_phys_addr + linear_region_phys_to_virt_diff; const uintptr_t cur_virt_addr = cur_phys_addr + linear_region_phys_to_virt_diff;
ttbr1_table.Map(cur_virt_addr, cur_size, cur_phys_addr, KernelRwDataAttribute, g_initial_page_allocator); init_pt.Map(cur_virt_addr, cur_size, cur_phys_addr, KernelRwDataAttribute, g_initial_page_allocator);
cur_phys_addr = region.GetAddress(); cur_phys_addr = region.GetAddress();
cur_size = region.GetSize(); cur_size = region.GetSize();
} }
const uintptr_t region_virt_addr = region.GetAddress() + linear_region_phys_to_virt_diff; const uintptr_t region_virt_addr = region.GetAddress() + linear_region_phys_to_virt_diff;
if (!region.HasTypeAttribute(KMemoryRegionAttr_ShouldKernelMap)) {
region.SetPairAddress(region_virt_addr);
}
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(region_virt_addr, region.GetSize(), GetTypeForVirtualLinearMapping(region.GetType()))); MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(region_virt_addr, region.GetSize(), GetTypeForVirtualLinearMapping(region.GetType())));
region.SetPairAddress(region_virt_addr);
KMemoryRegion *virt_region = KMemoryLayout::GetVirtualMemoryRegionTree().FindModifiable(region_virt_addr); KMemoryRegion *virt_region = KMemoryLayout::GetVirtualMemoryRegionTree().FindModifiable(region_virt_addr);
MESOSPHERE_INIT_ABORT_UNLESS(virt_region != nullptr); MESOSPHERE_INIT_ABORT_UNLESS(virt_region != nullptr);
@ -355,7 +430,7 @@ namespace ams::kern::init {
/* Map the last block, which we may have skipped. */ /* Map the last block, which we may have skipped. */
if (cur_size != 0) { if (cur_size != 0) {
const uintptr_t cur_virt_addr = cur_phys_addr + linear_region_phys_to_virt_diff; const uintptr_t cur_virt_addr = cur_phys_addr + linear_region_phys_to_virt_diff;
ttbr1_table.Map(cur_virt_addr, cur_size, cur_phys_addr, KernelRwDataAttribute, g_initial_page_allocator); init_pt.Map(cur_virt_addr, cur_size, cur_phys_addr, KernelRwDataAttribute, g_initial_page_allocator);
} }
} }
@ -363,18 +438,18 @@ namespace ams::kern::init {
std::memset(GetVoidPointer(slab_region_start), 0, slab_region_size); std::memset(GetVoidPointer(slab_region_start), 0, slab_region_size);
/* NOTE: Unknown function is called here which is ifdef'd out on retail kernel. */ /* NOTE: Unknown function is called here which is ifdef'd out on retail kernel. */
/* The unknown function is immediately before the function which gets the unknown debug region size, inside this translation unit. */ /* The unknown function is immediately before the function which gets an unknown debug region size, inside this translation unit. */
/* It's likely that this is some kind of initializer for the unknown debug region. */ /* It's likely that this is some kind of initializer for this unknown debug region. */
/* Create regions for and map all core-specific stacks. */ /* Create regions for and map all core-specific stacks. */
for (size_t i = 0; i < cpu::NumCores; i++) { for (size_t i = 0; i < cpu::NumCores; i++) {
MapStackForCore(ttbr1_table, KMemoryRegionType_KernelMiscMainStack, i); MapStackForCore(init_pt, KMemoryRegionType_KernelMiscMainStack, i);
MapStackForCore(ttbr1_table, KMemoryRegionType_KernelMiscIdleStack, i); MapStackForCore(init_pt, KMemoryRegionType_KernelMiscIdleStack, i);
MapStackForCore(ttbr1_table, KMemoryRegionType_KernelMiscExceptionStack, i); MapStackForCore(init_pt, KMemoryRegionType_KernelMiscExceptionStack, i);
} }
/* Setup the initial arguments. */ /* Setup the initial arguments. */
SetupInitialArguments(ttbr1_table, g_initial_page_allocator); SetupInitialArguments(init_pt, g_initial_page_allocator);
/* Finalize the page allocator, we're done allocating at this point. */ /* Finalize the page allocator, we're done allocating at this point. */
KInitialPageAllocator::State final_init_page_table_state; KInitialPageAllocator::State final_init_page_table_state;
@ -400,7 +475,7 @@ namespace ams::kern::init {
KMemoryLayout::InitializeLinearMemoryRegionTrees(aligned_linear_phys_start, linear_region_start); KMemoryLayout::InitializeLinearMemoryRegionTrees(aligned_linear_phys_start, linear_region_start);
/* Turn on all other cores. */ /* Turn on all other cores. */
TurnOnAllCores(GetInteger(ttbr1_table.GetPhysicalAddress(reinterpret_cast<uintptr_t>(::ams::kern::init::StartOtherCore)))); TurnOnAllCores(GetInteger(init_pt.GetPhysicalAddress(reinterpret_cast<uintptr_t>(::ams::kern::init::StartOtherCore))));
} }
KPhysicalAddress GetInitArgumentsAddress(s32 core_id) { KPhysicalAddress GetInitArgumentsAddress(s32 core_id) {