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kern: Implement most of memory init (all cores hit main, but still more to do)

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This commit is contained in:
Michael Scire 2020-01-28 22:09:47 -08:00
parent b2e522c0a0
commit e7dee2a9fc
22 changed files with 1246 additions and 81 deletions
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2
libraries/config/common.mk
View file

@ -76,7 +76,7 @@ TARGET := $(notdir $(CURDIR))
BUILD := build
DATA := data
INCLUDES := include
SOURCES ?= source $(foreach d,$(filter-out source/arch source/board source,$(wildcard source)),$(call DIR_WILDCARD,$d) $d)
SOURCES ?= source $(foreach d,$(filter-out source/arch source/board source,$(wildcard source/*)),$(if $(wildcard $d/.),$(call DIR_WILDCARD,$d) $d,))
ifneq ($(strip $(wildcard source/$(ATMOSPHERE_ARCH_DIR)/.*)),)
SOURCES += source/$(ATMOSPHERE_ARCH_DIR) $(call DIR_WILDCARD,source/$(ATMOSPHERE_ARCH_DIR))

6
libraries/libmesosphere/include/mesosphere.hpp
View file

@ -27,16 +27,20 @@
/* Core pre-initialization includes. */
#include "mesosphere/kern_select_cpu.hpp"
#include "mesosphere/kern_select_k_system_control.hpp"
/* Initialization headers. */
#include "mesosphere/init/kern_init_elf.hpp"
#include "mesosphere/init/kern_init_layout.hpp"
#include "mesosphere/init/kern_init_page_table_select.hpp"
#include "mesosphere/init/kern_init_arguments_select.hpp"
#include "mesosphere/kern_k_memory_layout.hpp"
/* Core functionality. */
#include "mesosphere/kern_select_interrupts.hpp"
#include "mesosphere/kern_select_k_system_control.hpp"
/* Supervisor Calls. */
#include "mesosphere/kern_svc.hpp"
/* Main functionality. */
#include "mesosphere/kern_main.hpp"

101
libraries/libmesosphere/include/mesosphere/arch/arm64/init/kern_k_init_page_table.hpp
View file

@ -17,7 +17,7 @@
#include <vapours.hpp>
#include <mesosphere/kern_panic.hpp>
#include <mesosphere/kern_k_typed_address.hpp>
#include "../kern_cpu.hpp"
#include <mesosphere/kern_select_cpu.hpp>
namespace ams::kern::init {
@ -190,10 +190,14 @@ namespace ams::kern::init {
virtual KPhysicalAddress Allocate() { return Null<KPhysicalAddress>; }
virtual void Free(KPhysicalAddress phys_addr) { /* Nothing to do here. */ (void)(phys_addr); }
};
struct NoClear{};
private:
KPhysicalAddress l1_table;
public:
constexpr ALWAYS_INLINE KInitialPageTable(KPhysicalAddress l1) : l1_table(l1) {
constexpr ALWAYS_INLINE KInitialPageTable(KPhysicalAddress l1, NoClear) : l1_table(l1) { /* ... */ }
constexpr ALWAYS_INLINE KInitialPageTable(KPhysicalAddress l1) : KInitialPageTable(l1, NoClear{}) {
ClearNewPageTable(this->l1_table);
}
@ -224,9 +228,9 @@ namespace ams::kern::init {
public:
void NOINLINE Map(KVirtualAddress virt_addr, size_t size, KPhysicalAddress phys_addr, const PageTableEntry &attr, IPageAllocator &allocator) {
/* Ensure that addresses and sizes are page aligned. */
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), PageSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(phys_addr), PageSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, PageSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), PageSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(phys_addr), PageSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, PageSize));
/* Iteratively map pages until the requested region is mapped. */
while (size > 0) {
@ -309,10 +313,37 @@ namespace ams::kern::init {
}
}
KPhysicalAddress GetPhysicalAddress(KVirtualAddress virt_addr) const {
/* Get the L1 entry. */
const L1PageTableEntry *l1_entry = GetL1Entry(this->l1_table, virt_addr);
if (l1_entry->IsBlock()) {
return l1_entry->GetBlock() + (GetInteger(virt_addr) & (L1BlockSize - 1));
}
MESOSPHERE_INIT_ABORT_UNLESS(l1_entry->IsTable());
/* Get the L2 entry. */
const L2PageTableEntry *l2_entry = GetL2Entry(l1_entry, virt_addr);
if (l2_entry->IsBlock()) {
return l2_entry->GetBlock() + (GetInteger(virt_addr) & (L2BlockSize - 1));
}
MESOSPHERE_INIT_ABORT_UNLESS(l2_entry->IsTable());
/* Get the L3 entry. */
const L3PageTableEntry *l3_entry = GetL3Entry(l2_entry, virt_addr);
MESOSPHERE_INIT_ABORT_UNLESS(l3_entry->IsBlock());
return l3_entry->GetBlock() + (GetInteger(virt_addr) & (L3BlockSize - 1));
}
bool IsFree(KVirtualAddress virt_addr, size_t size) {
/* Ensure that addresses and sizes are page aligned. */
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), PageSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, PageSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), PageSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, PageSize));
const KVirtualAddress end_virt_addr = virt_addr + size;
while (virt_addr < end_virt_addr) {
@ -360,8 +391,8 @@ namespace ams::kern::init {
cpu::DataSynchronizationBarrierInnerShareable();
/* Ensure that addresses and sizes are page aligned. */
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), PageSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, PageSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), PageSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, PageSize));
/* Iteratively reprotect pages until the requested region is reprotected. */
while (size > 0) {
@ -371,9 +402,9 @@ namespace ams::kern::init {
if (l1_entry->IsBlock()) {
/* Ensure that we are allowed to have an L1 block here. */
const KPhysicalAddress block = l1_entry->GetBlock();
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L1BlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, L1BlockSize));
MESOSPHERE_ABORT_UNLESS(l1_entry->IsCompatibleWithAttribute(attr_before, false));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L1BlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, L1BlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(l1_entry->IsCompatibleWithAttribute(attr_before, false));
/* Invalidate the existing L1 block. */
*static_cast<PageTableEntry *>(l1_entry) = InvalidPageTableEntry;
@ -389,7 +420,7 @@ namespace ams::kern::init {
}
/* Not a block, so we must be a table. */
MESOSPHERE_ABORT_UNLESS(l1_entry->IsTable());
MESOSPHERE_INIT_ABORT_UNLESS(l1_entry->IsTable());
L2PageTableEntry *l2_entry = GetL2Entry(l1_entry, virt_addr);
if (l2_entry->IsBlock()) {
@ -397,14 +428,14 @@ namespace ams::kern::init {
if (l2_entry->IsContiguous()) {
/* Ensure that we are allowed to have a contiguous L2 block here. */
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L2ContiguousBlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(block), L2ContiguousBlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, L2ContiguousBlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L2ContiguousBlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(block), L2ContiguousBlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, L2ContiguousBlockSize));
/* Invalidate the existing contiguous L2 block. */
for (size_t i = 0; i < L2ContiguousBlockSize / L2BlockSize; i++) {
/* Ensure that the entry is valid. */
MESOSPHERE_ABORT_UNLESS(l2_entry[i].IsCompatibleWithAttribute(attr_before, true));
MESOSPHERE_INIT_ABORT_UNLESS(l2_entry[i].IsCompatibleWithAttribute(attr_before, true));
static_cast<PageTableEntry *>(l2_entry)[i] = InvalidPageTableEntry;
}
cpu::DataSynchronizationBarrierInnerShareable();
@ -419,10 +450,10 @@ namespace ams::kern::init {
size -= L2ContiguousBlockSize;
} else {
/* Ensure that we are allowed to have an L2 block here. */
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L2BlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(block), L2BlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, L2BlockSize));
MESOSPHERE_ABORT_UNLESS(l2_entry->IsCompatibleWithAttribute(attr_before, false));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L2BlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(block), L2BlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, L2BlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(l2_entry->IsCompatibleWithAttribute(attr_before, false));
/* Invalidate the existing L2 block. */
*static_cast<PageTableEntry *>(l2_entry) = InvalidPageTableEntry;
@ -440,23 +471,23 @@ namespace ams::kern::init {
}
/* Not a block, so we must be a table. */
MESOSPHERE_ABORT_UNLESS(l2_entry->IsTable());
MESOSPHERE_INIT_ABORT_UNLESS(l2_entry->IsTable());
/* We must have a mapped l3 entry to reprotect. */
L3PageTableEntry *l3_entry = GetL3Entry(l2_entry, virt_addr);
MESOSPHERE_ABORT_UNLESS(l3_entry->IsBlock());
MESOSPHERE_INIT_ABORT_UNLESS(l3_entry->IsBlock());
const KPhysicalAddress block = l3_entry->GetBlock();
if (l3_entry->IsContiguous()) {
/* Ensure that we are allowed to have a contiguous L3 block here. */
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L3ContiguousBlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(block), L3ContiguousBlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, L3ContiguousBlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L3ContiguousBlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(block), L3ContiguousBlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, L3ContiguousBlockSize));
/* Invalidate the existing contiguous L3 block. */
for (size_t i = 0; i < L3ContiguousBlockSize / L3BlockSize; i++) {
/* Ensure that the entry is valid. */
MESOSPHERE_ABORT_UNLESS(l3_entry[i].IsCompatibleWithAttribute(attr_before, true));
MESOSPHERE_INIT_ABORT_UNLESS(l3_entry[i].IsCompatibleWithAttribute(attr_before, true));
static_cast<PageTableEntry *>(l3_entry)[i] = InvalidPageTableEntry;
}
cpu::DataSynchronizationBarrierInnerShareable();
@ -471,10 +502,10 @@ namespace ams::kern::init {
size -= L3ContiguousBlockSize;
} else {
/* Ensure that we are allowed to have an L3 block here. */
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L3BlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(block), L3BlockSize));
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, L3BlockSize));
MESOSPHERE_ABORT_UNLESS(l3_entry->IsCompatibleWithAttribute(attr_before, false));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(virt_addr), L3BlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(GetInteger(block), L3BlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(size, L3BlockSize));
MESOSPHERE_INIT_ABORT_UNLESS(l3_entry->IsCompatibleWithAttribute(attr_before, false));
/* Invalidate the existing L3 block. */
*static_cast<PageTableEntry *>(l3_entry) = InvalidPageTableEntry;
@ -505,14 +536,18 @@ namespace ams::kern::init {
this->next_address = address;
}
ALWAYS_INLINE uintptr_t GetFinalState() {
ALWAYS_INLINE uintptr_t GetFinalNextAddress() {
const uintptr_t final_address = this->next_address;
this->next_address = Null<uintptr_t>;
return final_address;
}
ALWAYS_INLINE uintptr_t GetFinalState() {
return this->GetFinalNextAddress();
}
public:
virtual KPhysicalAddress Allocate() override {
MESOSPHERE_ABORT_UNLESS(this->next_address != Null<uintptr_t>);
MESOSPHERE_INIT_ABORT_UNLESS(this->next_address != Null<uintptr_t>);
const uintptr_t allocated = this->next_address;
this->next_address += PageSize;
std::memset(reinterpret_cast<void *>(allocated), 0, PageSize);

3
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp
View file

@ -59,6 +59,9 @@ namespace ams::kern::arm64::cpu {
EnsureInstructionConsistency();
}
/* Synchronization helpers. */
NOINLINE void SynchronizeAllCores();
/* Cache management helpers. */
void FlushEntireDataCacheShared();
void FlushEntireDataCacheLocal();

91
libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu_system_registers.hpp
View file

@ -37,8 +37,8 @@ namespace ams::kern::arm64::cpu {
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(Ttbr0El1, ttbr0_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(Ttbr1El1, ttbr1_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(MairEl1, mair_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(TcrEl1, tcr_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(MairEl1, mair_el1)
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(SctlrEl1, sctlr_el1)
@ -48,19 +48,88 @@ namespace ams::kern::arm64::cpu {
MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS(CsselrEl1, csselr_el1)
/* Base class for register accessors. */
class GenericRegisterAccessor {
class GenericRegisterAccessorBase {
NON_COPYABLE(GenericRegisterAccessorBase);
NON_MOVEABLE(GenericRegisterAccessorBase);
private:
u64 value;
public:
ALWAYS_INLINE GenericRegisterAccessor(u64 v) : value(v) { /* ... */ }
constexpr ALWAYS_INLINE GenericRegisterAccessorBase(u64 v) : value(v) { /* ... */ }
protected:
constexpr ALWAYS_INLINE u64 GetValue() const {
return this->value;
}
constexpr ALWAYS_INLINE u64 GetBits(size_t offset, size_t count) const {
return (this->value >> offset) & ((1ul << count) - 1);
}
};
/* Special code for main id register. */
class MainIdRegisterAccessor : public GenericRegisterAccessor {
template<typename Derived>
class GenericRegisterAccessor : public GenericRegisterAccessorBase {
public:
constexpr ALWAYS_INLINE GenericRegisterAccessor(u64 v) : GenericRegisterAccessorBase(v) { /* ... */ }
protected:
ALWAYS_INLINE void Store() const {
static_cast<const Derived *>(this)->Store();
}
};
#define MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS(name) class name##RegisterAccessor : public GenericRegisterAccessor<name##RegisterAccessor>
#define MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS(accessor, reg_name) \
ALWAYS_INLINE accessor##RegisterAccessor() : GenericRegisterAccessor(MESOSPHERE_CPU_GET_SYSREG(reg_name)) { /* ... */ } \
constexpr ALWAYS_INLINE accessor##RegisterAccessor(u64 v) : GenericRegisterAccessor(v) { /* ... */ } \
\
ALWAYS_INLINE void Store() { const u64 v = this->GetValue(); MESOSPHERE_CPU_SET_SYSREG(reg_name, v); }
/* Accessors. */
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS(MemoryAccessIndirection) {
public:
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS(MemoryAccessIndirection, mair_el1)
};
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS(TranslationControl) {
public:
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS(TranslationControl, tcr_el1)
constexpr ALWAYS_INLINE size_t GetT1Size() const {
const size_t shift_value = this->GetBits(16, 6);
return size_t(1) << (size_t(64) - shift_value);
}
};
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS(MultiprocessorAffinity) {
public:
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS(MultiprocessorAffinity, mpidr_el1)
constexpr ALWAYS_INLINE u64 GetAff0() const {
return this->GetBits(0, 8);
}
constexpr ALWAYS_INLINE u64 GetAff1() const {
return this->GetBits(8, 8);
}
constexpr ALWAYS_INLINE u64 GetAff2() const {
return this->GetBits(16, 8);
}
constexpr ALWAYS_INLINE u64 GetAff3() const {
return this->GetBits(32, 8);
}
constexpr ALWAYS_INLINE u64 GetCpuOnArgument() const {
constexpr u64 Mask = 0x000000FF00FFFF00ul;
return this->GetValue() & Mask;
}
};
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS(ThreadId) {
public:
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS(ThreadId, tpidr_el1)
};
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS(MainId) {
public:
enum class Implementer {
ArmLimited = 0x41,
@ -70,7 +139,7 @@ namespace ams::kern::arm64::cpu {
CortexA57 = 0xD07,
};
public:
ALWAYS_INLINE MainIdRegisterAccessor() : GenericRegisterAccessor(MESOSPHERE_CPU_GET_SYSREG(midr_el1)) { /* ... */ }
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS(MainId, midr_el1)
public:
constexpr ALWAYS_INLINE Implementer GetImplementer() const {
return static_cast<Implementer>(this->GetBits(24, 8));
@ -94,9 +163,9 @@ namespace ams::kern::arm64::cpu {
};
/* Accessors for cache registers. */
class CacheLineIdAccessor : public GenericRegisterAccessor {
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS(CacheLineId) {
public:
ALWAYS_INLINE CacheLineIdAccessor() : GenericRegisterAccessor(MESOSPHERE_CPU_GET_SYSREG(clidr_el1)) { /* ... */ }
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS(CacheLineId, clidr_el1)
public:
constexpr ALWAYS_INLINE int GetLevelsOfCoherency() const {
return static_cast<int>(this->GetBits(24, 3));
@ -109,9 +178,9 @@ namespace ams::kern::arm64::cpu {
/* TODO: Other bitfield accessors? */
};
class CacheSizeIdAccessor : public GenericRegisterAccessor {
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS(CacheSizeId) {
public:
ALWAYS_INLINE CacheSizeIdAccessor() : GenericRegisterAccessor(MESOSPHERE_CPU_GET_SYSREG(ccsidr_el1)) { /* ... */ }
MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS(CacheSizeId, ccsidr_el1)
public:
constexpr ALWAYS_INLINE int GetNumberOfSets() const {
return static_cast<int>(this->GetBits(13, 15));
@ -128,6 +197,8 @@ namespace ams::kern::arm64::cpu {
/* TODO: Other bitfield accessors? */
};
#undef MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS_FUNCTIONS
#undef MESOSPHERE_CPU_SYSREG_ACCESSOR_CLASS
#undef MESOSPHERE_CPU_DEFINE_SYSREG_ACCESSORS
#undef MESOSPHERE_CPU_GET_SYSREG
#undef MESOSPHERE_CPU_SET_SYSREG

2
libraries/libmesosphere/include/mesosphere/board/nintendo/switch/kern_k_system_control.hpp
View file

@ -23,8 +23,10 @@ namespace ams::kern {
class Init {
public:
/* Initialization. */
static size_t GetIntendedMemorySize();
static KPhysicalAddress GetKernelPhysicalBaseAddress(uintptr_t base_address);
static bool ShouldIncreaseThreadResourceLimit();
static void CpuOn(u64 core_id, uintptr_t entrypoint, uintptr_t arg);
/* Randomness. */
static void GenerateRandomBytes(void *dst, size_t size);

2
libraries/libmesosphere/include/mesosphere/init/kern_init_arguments_select.hpp
View file

@ -25,5 +25,7 @@
namespace ams::kern::init {
KPhysicalAddress GetInitArgumentsAddress(s32 core_id);
void SetInitArguments(s32 core_id, KPhysicalAddress address, uintptr_t arg);
void StoreInitArguments();
}

391
libraries/libmesosphere/include/mesosphere/kern_k_memory_layout.hpp Normal file
View file

@ -0,0 +1,391 @@
/*
* 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/>.
*/
#pragma once
#include <vapours.hpp>
#include <mesosphere/init/kern_init_page_table_select.hpp>
namespace ams::kern {
constexpr size_t KernelAslrAlignment = 2_MB;
constexpr size_t KernelVirtualAddressSpaceWidth = size_t(1ul) << 39ul;
constexpr size_t KernelPhysicalAddressSpaceWidth = size_t(1ul) << 48ul;
constexpr size_t KernelVirtualAddressSpaceBase = 0ul - KernelVirtualAddressSpaceWidth;
constexpr size_t KernelVirtualAddressSpaceEnd = KernelVirtualAddressSpaceBase + (KernelVirtualAddressSpaceWidth - KernelAslrAlignment);
constexpr size_t KernelVirtualAddressSpaceLast = KernelVirtualAddressSpaceEnd - 1ul;
constexpr size_t KernelVirtualAddressSpaceSize = KernelVirtualAddressSpaceEnd - KernelVirtualAddressSpaceBase;
constexpr size_t KernelPhysicalAddressSpaceBase = 0ul;
constexpr size_t KernelPhysicalAddressSpaceEnd = KernelPhysicalAddressSpaceBase + KernelPhysicalAddressSpaceWidth;
constexpr size_t KernelPhysicalAddressSpaceLast = KernelPhysicalAddressSpaceEnd - 1ul;
constexpr size_t KernelPhysicalAddressSpaceSize = KernelPhysicalAddressSpaceEnd - KernelPhysicalAddressSpaceBase;
enum KMemoryRegionType : u32 {
KMemoryRegionAttr_CarveoutProtected = 0x04000000,
KMemoryRegionAttr_DidKernelMap = 0x08000000,
KMemoryRegionAttr_ShouldKernelMap = 0x10000000,
KMemoryRegionAttr_UserReadOnly = 0x20000000,
KMemoryRegionAttr_NoUserMap = 0x40000000,
KMemoryRegionAttr_LinearMapped = 0x80000000,
KMemoryRegionType_None = 0,
KMemoryRegionType_Kernel = 1,
KMemoryRegionType_Dram = 2,
KMemoryRegionType_CoreLocal = 4,
KMemoryRegionType_VirtualKernelPtHeap = 0x2A,
KMemoryRegionType_VirtualKernelTraceBuffer = 0x4A,
KMemoryRegionType_VirtualKernelInitPt = 0x19A,
KMemoryRegionType_Uart = 0x1D,
KMemoryRegionType_InterruptDistributor = 0x4D,
KMemoryRegionType_InterruptController = 0x2D,
KMemoryRegionType_MemoryController = 0x55,
KMemoryRegionType_MemoryController0 = 0x95,
KMemoryRegionType_MemoryController1 = 0x65,
KMemoryRegionType_PowerManagementController = 0x1A5,
KMemoryRegionType_KernelAutoMap = KMemoryRegionType_Kernel | KMemoryRegionAttr_ShouldKernelMap,
KMemoryRegionType_KernelTemp = 0x31,
KMemoryRegionType_KernelCode = 0x19,
KMemoryRegionType_KernelStack = 0x29,
KMemoryRegionType_KernelMisc = 0x49,
KMemoryRegionType_KernelSlab = 0x89,
KMemoryRegionType_KernelMiscMainStack = 0xB49,
KMemoryRegionType_KernelMiscMappedDevice = 0xD49,
KMemoryRegionType_KernelMiscIdleStack = 0x1349,
KMemoryRegionType_KernelMiscUnknownDebug = 0x1549,
KMemoryRegionType_KernelMiscExceptionStack = 0x2349,
KMemoryRegionType_DramLinearMapped = KMemoryRegionType_Dram | KMemoryRegionAttr_LinearMapped,
KMemoryRegionType_DramReservedEarly = 0x16 | KMemoryRegionAttr_NoUserMap,
KMemoryRegionType_DramPoolPartition = 0x26 | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_LinearMapped,
KMemoryRegionType_DramKernel = 0xE | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected,
KMemoryRegionType_DramKernelCode = 0xCE | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected,
KMemoryRegionType_DramKernelSlab = 0x14E | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected,
KMemoryRegionType_DramKernelPtHeap = 0x24E | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected | KMemoryRegionAttr_LinearMapped,
KMemoryRegionType_DramKernelInitPt = 0x44E | KMemoryRegionAttr_NoUserMap | KMemoryRegionAttr_CarveoutProtected | KMemoryRegionAttr_LinearMapped,
/* These regions aren't normally mapped in retail kernel. */
KMemoryRegionType_KernelTraceBuffer = 0xA6 | KMemoryRegionAttr_UserReadOnly | KMemoryRegionAttr_LinearMapped,
KMemoryRegionType_OnMemoryBootImage = 0x156,
KMemoryRegionType_DTB = 0x256,
};
constexpr ALWAYS_INLINE KMemoryRegionType GetTypeForVirtualLinearMapping(u32 type_id) {
if (type_id == (type_id | KMemoryRegionType_KernelTraceBuffer)) {
return KMemoryRegionType_VirtualKernelTraceBuffer;
} else if (type_id == (type_id | KMemoryRegionType_DramKernelPtHeap)) {
return KMemoryRegionType_VirtualKernelPtHeap;
} else {
return KMemoryRegionType_Dram;
}
}
class KMemoryBlock : public util::IntrusiveRedBlackTreeBaseNode<KMemoryBlock> {
NON_COPYABLE(KMemoryBlock);
NON_MOVEABLE(KMemoryBlock);
private:
uintptr_t address;
uintptr_t pair_address;
size_t block_size;
u32 attributes;
u32 type_id;
public:
static constexpr ALWAYS_INLINE int Compare(const KMemoryBlock &lhs, const KMemoryBlock &rhs) {
if (lhs.address < rhs.address) {
return -1;
} else if (lhs.address == rhs.address) {
return 0;
} else {
return 1;
}
}
public:
constexpr ALWAYS_INLINE KMemoryBlock() : address(0), pair_address(0), block_size(0), attributes(0), type_id(0) { /* ... */ }
constexpr ALWAYS_INLINE KMemoryBlock(uintptr_t a, size_t bl, uintptr_t p, u32 r, u32 t) :
address(a), pair_address(p), block_size(bl), attributes(r), type_id(t)
{
/* ... */
}
constexpr ALWAYS_INLINE KMemoryBlock(uintptr_t a, size_t bl, u32 r, u32 t) : KMemoryBlock(a, bl, std::numeric_limits<uintptr_t>::max(), r, t) { /* ... */ }
constexpr ALWAYS_INLINE uintptr_t GetAddress() const {
return this->address;
}
constexpr ALWAYS_INLINE uintptr_t GetPairAddress() const {
return this->pair_address;
}
constexpr ALWAYS_INLINE size_t GetSize() const {
return this->block_size;
}
constexpr ALWAYS_INLINE uintptr_t GetEndAddress() const {
return this->GetAddress() + this->GetSize();
}
constexpr ALWAYS_INLINE uintptr_t GetLastAddress() const {
return this->GetEndAddress() - 1;
}
constexpr ALWAYS_INLINE u32 GetAttributes() const {
return this->attributes;
}
constexpr ALWAYS_INLINE u32 GetType() const {
return this->type_id;
}
constexpr ALWAYS_INLINE void SetType(u32 type) {
MESOSPHERE_INIT_ABORT_UNLESS(this->CanDerive(type));
this->type_id = type;
}
constexpr ALWAYS_INLINE bool Contains(uintptr_t address) const {
return this->GetAddress() <= address && address < this->GetLastAddress();
}
constexpr ALWAYS_INLINE bool IsDerivedFrom(u32 type) const {
return (this->GetType() | type) == this->GetType();
}
constexpr ALWAYS_INLINE bool HasTypeAttribute(KMemoryRegionType attr) const {
return (this->GetType() | attr) == this->GetType();
}
constexpr ALWAYS_INLINE bool CanDerive(u32 type) const {
return (this->GetType() | type) == type;
}
constexpr ALWAYS_INLINE void SetPairAddress(uintptr_t a) {
this->pair_address = a;
}
constexpr ALWAYS_INLINE void SetTypeAttribute(KMemoryRegionType attr) {
this->type_id |= attr;
}
};
static_assert(std::is_trivially_destructible<KMemoryBlock>::value);
class KMemoryBlockTree {
public:
struct DerivedRegionExtents {
const KMemoryBlock *first_block;
const KMemoryBlock *last_block;
};
private:
using TreeType = util::IntrusiveRedBlackTreeBaseTraits<KMemoryBlock>::TreeType<KMemoryBlock>;
using value_type = TreeType::value_type;
using size_type = TreeType::size_type;
using difference_type = TreeType::difference_type;
using pointer = TreeType::pointer;
using const_pointer = TreeType::const_pointer;
using reference = TreeType::reference;
using const_reference = TreeType::const_reference;
using iterator = TreeType::iterator;
using const_iterator = TreeType::const_iterator;
private:
TreeType tree;
public:
constexpr ALWAYS_INLINE KMemoryBlockTree() : tree() { /* ... */ }
public:
iterator FindContainingBlock(uintptr_t address) {
for (auto it = this->begin(); it != this->end(); it++) {
if (it->Contains(address)) {
return it;
}
}
MESOSPHERE_INIT_ABORT();
}
iterator FindFirstBlockByTypeAttr(u32 type_id, u32 attr = 0) {
for (auto it = this->begin(); it != this->end(); it++) {
if (it->GetType() == type_id && it->GetAttributes() == attr) {
return it;
}
}
MESOSPHERE_INIT_ABORT();
}
DerivedRegionExtents GetDerivedRegionExtents(u32 type_id) {
DerivedRegionExtents extents = { .first_block = nullptr, .last_block = nullptr };
for (auto it = this->cbegin(); it != this->cend(); it++) {
if (it->IsDerivedFrom(type_id)) {
if (extents.first_block == nullptr) {
extents.first_block = std::addressof(*it);
}
extents.last_block = std::addressof(*it);
}
}
MESOSPHERE_INIT_ABORT_UNLESS(extents.first_block != nullptr);
MESOSPHERE_INIT_ABORT_UNLESS(extents.last_block != nullptr);
return extents;
}
public:
NOINLINE bool Insert(uintptr_t address, size_t size, u32 type_id, u32 new_attr = 0, u32 old_attr = 0);
NOINLINE KVirtualAddress GetRandomAlignedRegion(size_t size, size_t alignment, u32 type_id);
ALWAYS_INLINE KVirtualAddress GetRandomAlignedRegionWithGuard(size_t size, size_t alignment, u32 type_id, size_t guard_size) {
return this->GetRandomAlignedRegion(size + 2 * guard_size, alignment, type_id) + guard_size;
}
public:
/* Iterator accessors. */
iterator begin() {
return this->tree.begin();
}
const_iterator begin() const {
return this->tree.begin();
}
iterator end() {
return this->tree.end();
}
const_iterator end() const {
return this->tree.end();
}
const_iterator cbegin() const {
return this->begin();
}
const_iterator cend() const {
return this->end();
}
iterator iterator_to(reference ref) {
return this->tree.iterator_to(ref);
}
const_iterator iterator_to(const_reference ref) const {
return this->tree.iterator_to(ref);
}
/* Content management. */
bool empty() const {
return this->tree.empty();
}
reference back() {
return this->tree.back();
}
const_reference back() const {
return this->tree.back();
}
reference front() {
return this->tree.front();
}
const_reference front() const {
return this->tree.front();
}
/* GCC over-eagerly inlines this operation. */
NOINLINE iterator insert(reference ref) {
return this->tree.insert(ref);
}
NOINLINE iterator erase(iterator it) {
return this->tree.erase(it);
}
iterator find(const_reference ref) const {
return this->tree.find(ref);
}
iterator nfind(const_reference ref) const {
return this->tree.nfind(ref);
}
};
class KMemoryBlockAllocator {
NON_COPYABLE(KMemoryBlockAllocator);
NON_MOVEABLE(KMemoryBlockAllocator);
public:
static constexpr size_t MaxMemoryBlocks = 1000;
friend class KMemoryLayout;
private:
KMemoryBlock block_heap[MaxMemoryBlocks];
size_t num_blocks;
private:
constexpr ALWAYS_INLINE KMemoryBlockAllocator() : block_heap(), num_blocks() { /* ... */ }
public:
ALWAYS_INLINE KMemoryBlock *Allocate() {
/* Ensure we stay within the bounds of our heap. */
MESOSPHERE_INIT_ABORT_UNLESS(this->num_blocks < MaxMemoryBlocks);
return &this->block_heap[this->num_blocks++];
}
template<typename... Args>
ALWAYS_INLINE KMemoryBlock *Create(Args&&... args) {
KMemoryBlock *block = this->Allocate();
new (block) KMemoryBlock(std::forward<Args>(args)...);
return block;
}
};
class KMemoryLayout {
private:
static /* constinit */ inline uintptr_t s_linear_phys_to_virt_diff;
static /* constinit */ inline uintptr_t s_linear_virt_to_phys_diff;
static /* constinit */ inline KMemoryBlockAllocator s_block_allocator;
static /* constinit */ inline KMemoryBlockTree s_virtual_tree;
static /* constinit */ inline KMemoryBlockTree s_physical_tree;
static /* constinit */ inline KMemoryBlockTree s_virtual_linear_tree;
static /* constinit */ inline KMemoryBlockTree s_physical_linear_tree;
public:
static ALWAYS_INLINE KMemoryBlockAllocator &GetMemoryBlockAllocator() { return s_block_allocator; }
static ALWAYS_INLINE KMemoryBlockTree &GetVirtualMemoryBlockTree() { return s_virtual_tree; }
static ALWAYS_INLINE KMemoryBlockTree &GetPhysicalMemoryBlockTree() { return s_physical_tree; }
static ALWAYS_INLINE KMemoryBlockTree &GetVirtualLinearMemoryBlockTree() { return s_virtual_linear_tree; }
static ALWAYS_INLINE KMemoryBlockTree &GetPhysicalLinearMemoryBlockTree() { return s_physical_linear_tree; }
static NOINLINE KVirtualAddress GetMainStackTopAddress(s32 core_id) {
return GetVirtualMemoryBlockTree().FindFirstBlockByTypeAttr(KMemoryRegionType_KernelMiscMainStack, static_cast<u32>(core_id))->GetEndAddress();
}
static void InitializeLinearMemoryBlockTrees(KPhysicalAddress aligned_linear_phys_start, KVirtualAddress linear_virtual_start);
};
namespace init {
/* These should be generic, regardless of board. */
void SetupCoreLocalRegionMemoryBlocks(KInitialPageTable &page_table, KInitialPageAllocator &page_allocator);
void SetupPoolPartitionMemoryBlocks();
/* These may be implemented in a board-specific manner. */
void SetupDevicePhysicalMemoryBlocks();
void SetupDramPhysicalMemoryBlocks();
}
}

23
libraries/libmesosphere/include/mesosphere/kern_main.hpp Normal file
View file

@ -0,0 +1,23 @@
/*
* 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/>.
*/
#pragma once
#include <vapours.hpp>
namespace ams::kern {
NORETURN void HorizonKernelMain(s32 core_id);
}

10
libraries/libmesosphere/include/mesosphere/kern_panic.hpp
View file

@ -44,10 +44,18 @@ namespace ams::kern {
#define MESOSPHERE_R_ASSERT(expr) MESOSPHERE_ASSERT_IMPL(R_SUCCEEDED(expr), "Result assertion failed: %s", #expr)
#define MESOSPHERE_ABORT() MESOSPHERE_PANIC("Abort()");
#define MESOSPHERE_INIT_ABORT() do { /* ... */ } while (true)
#define MESOSPHERE_ABORT_UNLESS(expr) \
({ \
if (AMS_UNLIKELY(!(expr))) { \
if (AMS_UNLIKELY(!(expr))) { \
MESOSPHERE_PANIC("Abort(): %s", #expr); \
} \
})
#define MESOSPHERE_INIT_ABORT_UNLESS(expr) \
({ \
if (AMS_UNLIKELY(!(expr))) { \
MESOSPHERE_INIT_ABORT(); \
} \
})

27
libraries/libmesosphere/source/arch/arm64/kern_cpu.cpp
View file

@ -19,6 +19,8 @@ namespace ams::kern::arm64::cpu {
namespace {
std::atomic<s32> g_all_core_sync_count;
void FlushEntireDataCacheImpl(int level) {
/* Used in multiple locations. */
const u64 level_sel_value = static_cast<u64>(level << 1);
@ -28,7 +30,7 @@ namespace ams::kern::arm64::cpu {
cpu::InstructionMemoryBarrier();
/* Get cache size id info. */
CacheSizeIdAccessor ccsidr_el1;
CacheSizeIdRegisterAccessor ccsidr_el1;
const int num_sets = ccsidr_el1.GetNumberOfSets();
const int num_ways = ccsidr_el1.GetAssociativity();
const int line_size = ccsidr_el1.GetLineSize();
@ -49,7 +51,7 @@ namespace ams::kern::arm64::cpu {
}
void FlushEntireDataCacheShared() {
CacheLineIdAccessor clidr_el1;
CacheLineIdRegisterAccessor clidr_el1;
const int levels_of_coherency = clidr_el1.GetLevelsOfCoherency();
const int levels_of_unification = clidr_el1.GetLevelsOfUnification();
@ -59,11 +61,28 @@ namespace ams::kern::arm64::cpu {
}
void FlushEntireDataCacheLocal() {
CacheLineIdAccessor clidr_el1;
CacheLineIdRegisterAccessor clidr_el1;
const int levels_of_unification = clidr_el1.GetLevelsOfUnification();
for (int level = levels_of_unification - 1; level >= 0; level--) {
FlushEntireDataCacheImpl(level);
}
}
}
NOINLINE void SynchronizeAllCores() {
/* Wait until the count can be read. */
while (!(g_all_core_sync_count < static_cast<s32>(cpu::NumCores))) { /* ... */ }
const s32 per_core_idx = g_all_core_sync_count.fetch_add(1);
/* Loop until it's our turn. This will act on each core in order. */
while (g_all_core_sync_count != per_core_idx + static_cast<s32>(cpu::NumCores)) { /* ... */ }
if (g_all_core_sync_count != 2 * static_cast<s32>(cpu::NumCores) - 1) {
g_all_core_sync_count++;
} else {
g_all_core_sync_count = 0;
}
}
}

56
libraries/libmesosphere/source/board/nintendo/switch/kern_k_memory_layout.board.nintendo_switch.cpp Normal file
View file

@ -0,0 +1,56 @@
/*
* 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 <mesosphere.hpp>
namespace ams::kern {
namespace {
constexpr uintptr_t DramPhysicalAddress = 0x80000000;
constexpr size_t ReservedEarlyDramSize = 0x60000;
}
namespace init {
void SetupDevicePhysicalMemoryBlocks() {
/* TODO: Give these constexpr defines somewhere? */
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x70006000, 0x40, KMemoryRegionType_Uart | KMemoryRegionAttr_ShouldKernelMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x70019000, 0x1000, KMemoryRegionType_MemoryController | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x7001C000, 0x1000, KMemoryRegionType_MemoryController0 | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x7001D000, 0x1000, KMemoryRegionType_MemoryController1 | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x7000E000, 0x400, KMemoryRegionType_None | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x7000E400, 0xC00, KMemoryRegionType_PowerManagementController | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x50040000, 0x1000, KMemoryRegionType_None | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x50041000, 0x1000, KMemoryRegionType_InterruptDistributor | KMemoryRegionAttr_ShouldKernelMap | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x50042000, 0x1000, KMemoryRegionType_InterruptController | KMemoryRegionAttr_ShouldKernelMap | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x50043000, 0x1D000, KMemoryRegionType_None | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x6000F000, 0x1000, KMemoryRegionType_None | KMemoryRegionAttr_NoUserMap));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(0x6001DC00, 0x400, KMemoryRegionType_None | KMemoryRegionAttr_NoUserMap));
}
void SetupDramPhysicalMemoryBlocks() {
const size_t intended_memory_size = KSystemControl::Init::GetIntendedMemorySize();
const KPhysicalAddress physical_memory_base_address = KSystemControl::Init::GetKernelPhysicalBaseAddress(DramPhysicalAddress);
/* Insert blocks into the tree. */
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(GetInteger(physical_memory_base_address), intended_memory_size, KMemoryRegionType_Dram));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(GetInteger(physical_memory_base_address), ReservedEarlyDramSize, KMemoryRegionType_DramReservedEarly));
}
}
}

34
libraries/libmesosphere/source/board/nintendo/switch/kern_k_system_control.cpp
View file

@ -24,7 +24,7 @@ namespace ams::kern {
/* TODO: Move this into a header for the MC in general. */
constexpr u32 MemoryControllerConfigurationRegister = 0x70019050;
u32 config_value;
MESOSPHERE_ABORT_UNLESS(smc::init::ReadWriteRegister(&config_value, MemoryControllerConfigurationRegister, 0, 0));
MESOSPHERE_INIT_ABORT_UNLESS(smc::init::ReadWriteRegister(&config_value, MemoryControllerConfigurationRegister, 0, 0));
return static_cast<size_t>(config_value & 0x3FFF) << 20;
}
@ -40,24 +40,24 @@ namespace ams::kern {
return value;
}
ALWAYS_INLINE size_t GetIntendedMemorySizeForInit() {
switch (GetKernelConfigurationForInit().Get<smc::KernelConfiguration::MemorySize>()) {
case smc::MemorySize_4GB:
default: /* All invalid modes should go to 4GB. */
return 4_GB;
case smc::MemorySize_6GB:
return 6_GB;
case smc::MemorySize_8GB:
return 8_GB;
}
}
}
/* Initialization. */
size_t KSystemControl::Init::GetIntendedMemorySize() {
switch (GetKernelConfigurationForInit().Get<smc::KernelConfiguration::MemorySize>()) {
case smc::MemorySize_4GB:
default: /* All invalid modes should go to 4GB. */
return 4_GB;
case smc::MemorySize_6GB:
return 6_GB;
case smc::MemorySize_8GB:
return 8_GB;
}
}
KPhysicalAddress KSystemControl::Init::GetKernelPhysicalBaseAddress(uintptr_t base_address) {
const size_t real_dram_size = GetRealMemorySizeForInit();
const size_t intended_dram_size = GetIntendedMemorySizeForInit();
const size_t intended_dram_size = KSystemControl::Init::GetIntendedMemorySize();
if (intended_dram_size * 2 < real_dram_size) {
return base_address;
} else {
@ -69,9 +69,13 @@ namespace ams::kern {
return GetKernelConfigurationForInit().Get<smc::KernelConfiguration::IncreaseThreadResourceLimit>();
}
void KSystemControl::Init::CpuOn(u64 core_id, uintptr_t entrypoint, uintptr_t arg) {
smc::init::CpuOn(core_id, entrypoint, arg);
}
/* Randomness for Initialization. */
void KSystemControl::Init::GenerateRandomBytes(void *dst, size_t size) {
MESOSPHERE_ABORT_UNLESS(size <= 0x38);
MESOSPHERE_INIT_ABORT_UNLESS(size <= 0x38);
smc::init::GenerateRandomBytes(dst, size);
}

5
libraries/libmesosphere/source/board/nintendo/switch/kern_secure_monitor.cpp
View file

@ -103,6 +103,11 @@ namespace ams::kern::smc {
/* SMC functionality needed for init. */
namespace init {
void CpuOn(u64 core_id, uintptr_t entrypoint, uintptr_t arg) {
SecureMonitorArguments args = { FunctionId_CpuOn, core_id, entrypoint, arg };
CallPrivilegedSecureMonitorFunctionForInit(args);
}
void GetConfig(u64 *out, size_t num_qwords, ConfigItem config_item) {
SecureMonitorArguments args = { FunctionId_GetConfig, static_cast<u32>(config_item) };
CallPrivilegedSecureMonitorFunctionForInit(args);

1
libraries/libmesosphere/source/board/nintendo/switch/kern_secure_monitor.hpp
View file

@ -79,6 +79,7 @@ namespace ams::kern::smc {
namespace init {
void CpuOn(u64 core_id, uintptr_t entrypoint, uintptr_t arg);
void GetConfig(u64 *out, size_t num_qwords, ConfigItem config_item);
void GenerateRandomBytes(void *dst, size_t size);
bool ReadWriteRegister(u32 *out, u64 address, u32 mask, u32 value);

223
libraries/libmesosphere/source/kern_k_memory_layout.cpp Normal file
View file

@ -0,0 +1,223 @@
/*
* 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 <mesosphere.hpp>
namespace ams::kern {
bool KMemoryBlockTree::Insert(uintptr_t address, size_t size, u32 type_id, u32 new_attr, u32 old_attr) {
/* Locate the memory block that contains the address. */
auto it = this->FindContainingBlock(address);
/* We require that the old attr is correct. */
if (it->GetAttributes() != old_attr) {
return false;
}
/* We further require that the block can be split from the old block. */
const uintptr_t inserted_block_end = address + size;
const uintptr_t inserted_block_last = inserted_block_end - 1;
if (it->GetLastAddress() < inserted_block_last) {
return false;
}
/* Further, we require that the type id is a valid transformation. */
if (!it->CanDerive(type_id)) {
return false;
}
/* Cache information from the block before we remove it. */
KMemoryBlock *cur_block = std::addressof(*it);
const uintptr_t old_address = it->GetAddress();
const size_t old_size = it->GetSize();
const uintptr_t old_end = old_address + old_size;
const uintptr_t old_last = old_end - 1;
const uintptr_t old_pair = it->GetPairAddress();
const u32 old_type = it->GetType();
/* Erase the existing block from the tree. */
this->erase(it);
/* If we need to insert a block before the region, do so. */
if (old_address != address) {
new (cur_block) KMemoryBlock(old_address, address - old_address, old_pair, old_attr, old_type);
this->insert(*cur_block);
cur_block = KMemoryLayout::GetMemoryBlockAllocator().Allocate();
}
/* Insert a new block. */
const uintptr_t new_pair = (old_pair != std::numeric_limits<uintptr_t>::max()) ? old_pair + (address - old_address) : old_pair;
new (cur_block) KMemoryBlock(address, size, new_pair, new_attr, type_id);
this->insert(*cur_block);
/* If we need to insert a block after the region, do so. */
if (old_last != inserted_block_last) {
const uintptr_t after_pair = (old_pair != std::numeric_limits<uintptr_t>::max()) ? old_pair + (inserted_block_end - old_address) : old_pair;
this->insert(*KMemoryLayout::GetMemoryBlockAllocator().Create(inserted_block_end, old_end - inserted_block_end, after_pair, old_attr, old_type));
}
return true;
}
KVirtualAddress KMemoryBlockTree::GetRandomAlignedRegion(size_t size, size_t alignment, u32 type_id) {
/* We want to find the total extents of the type id. */
const auto extents = this->GetDerivedRegionExtents(type_id);
/* Ensure that our alignment is correct. */
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(extents.first_block->GetAddress(), alignment));
const uintptr_t first_address = extents.first_block->GetAddress();
const uintptr_t last_address = extents.last_block->GetLastAddress();
while (true) {
const uintptr_t candidate = util::AlignDown(KSystemControl::Init::GenerateRandomRange(first_address, last_address), alignment);
/* Ensure that the candidate doesn't overflow with the size. */
if (!(candidate < candidate + size)) {
continue;
}
const uintptr_t candidate_last = candidate + size - 1;
/* Ensure that the candidate fits within the region. */
if (candidate_last > last_address) {
continue;
}
/* Locate the candidate block, and ensure it fits. */
const KMemoryBlock *candidate_block = std::addressof(*this->FindContainingBlock(candidate));
if (candidate_last > candidate_block->GetLastAddress()) {
continue;
}
/* Ensure that the block has the correct type id. */
if (candidate_block->GetType() != type_id)
continue;
return candidate;
}
}
void KMemoryLayout::InitializeLinearMemoryBlockTrees(KPhysicalAddress aligned_linear_phys_start, KVirtualAddress linear_virtual_start) {
/* Set static differences. */
s_linear_phys_to_virt_diff = GetInteger(linear_virtual_start) - GetInteger(aligned_linear_phys_start);
s_linear_virt_to_phys_diff = GetInteger(aligned_linear_phys_start) - GetInteger(linear_virtual_start);
/* Initialize linear trees. */
for (auto &block : GetPhysicalMemoryBlockTree()) {
if (!block.HasTypeAttribute(KMemoryRegionAttr_LinearMapped)) {
continue;
}
GetPhysicalLinearMemoryBlockTree().insert(*GetMemoryBlockAllocator().Create(block.GetAddress(), block.GetSize(), block.GetAttributes(), block.GetType()));
}
for (auto &block : GetVirtualMemoryBlockTree()) {
if (!block.IsDerivedFrom(KMemoryRegionType_Dram)) {
continue;
}
GetVirtualLinearMemoryBlockTree().insert(*GetMemoryBlockAllocator().Create(block.GetAddress(), block.GetSize(), block.GetAttributes(), block.GetType()));
}
}
namespace init {
namespace {
constexpr PageTableEntry KernelRwDataAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_NormalMemory, PageTableEntry::Shareable_InnerShareable);
constexpr size_t CoreLocalRegionAlign = PageSize;
constexpr size_t CoreLocalRegionSize = PageSize * (1 + cpu::NumCores);
constexpr size_t CoreLocalRegionSizeWithGuards = CoreLocalRegionSize + 2 * PageSize;
constexpr size_t CoreLocalRegionBoundsAlign = 1_GB;
/* TODO: static_assert(CoreLocalRegionSize == sizeof(KCoreLocalRegion)); */
KVirtualAddress GetCoreLocalRegionVirtualAddress() {
while (true) {
const uintptr_t candidate_start = GetInteger(KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegion(CoreLocalRegionSizeWithGuards, CoreLocalRegionAlign, KMemoryRegionType_None));
const uintptr_t candidate_end = candidate_start + CoreLocalRegionSizeWithGuards;
const uintptr_t candidate_last = candidate_end - 1;
const KMemoryBlock *containing_block = std::addressof(*KMemoryLayout::GetVirtualMemoryBlockTree().FindContainingBlock(candidate_start));
if (candidate_last > containing_block->GetLastAddress()) {
continue;
}
if (containing_block->GetType() != KMemoryRegionType_None) {
continue;
}
if (util::AlignDown(candidate_start, CoreLocalRegionBoundsAlign) != util::AlignDown(candidate_last, CoreLocalRegionBoundsAlign)) {
continue;
}
if (containing_block->GetAddress() > util::AlignDown(candidate_start, CoreLocalRegionBoundsAlign)) {
continue;
}
if (util::AlignUp(candidate_last, CoreLocalRegionBoundsAlign) - 1 > containing_block->GetLastAddress()) {
continue;
}
return candidate_start + PageSize;
}
}
}
void SetupCoreLocalRegionMemoryBlocks(KInitialPageTable &page_table, KInitialPageAllocator &page_allocator) {
const KVirtualAddress core_local_virt_start = GetCoreLocalRegionVirtualAddress();
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(core_local_virt_start), CoreLocalRegionSize, KMemoryRegionType_CoreLocal));
/* Allocate a page for each core. */
KPhysicalAddress core_local_region_start_phys[cpu::NumCores] = {};
for (size_t i = 0; i < cpu::NumCores; i++) {
core_local_region_start_phys[i] = page_allocator.Allocate();
}
/* Allocate an l1 page table for each core. */
KPhysicalAddress core_l1_ttbr1_phys[cpu::NumCores] = {};
core_l1_ttbr1_phys[0] = util::AlignDown(cpu::GetTtbr1El1(), PageSize);
for (size_t i = 1; i < cpu::NumCores; i++) {
core_l1_ttbr1_phys[i] = page_allocator.Allocate();
std::memcpy(reinterpret_cast<void *>(GetInteger(core_l1_ttbr1_phys[i])), reinterpret_cast<void *>(GetInteger(core_l1_ttbr1_phys[0])), PageSize);
}
/* Use the l1 page table for each core to map the core local region for each core. */
for (size_t i = 0; i < cpu::NumCores; i++) {
KInitialPageTable temp_pt(core_l1_ttbr1_phys[i], KInitialPageTable::NoClear{});
temp_pt.Map(core_local_virt_start, PageSize, core_l1_ttbr1_phys[i], KernelRwDataAttribute, page_allocator);
for (size_t j = 0; j < cpu::NumCores; j++) {
temp_pt.Map(core_local_virt_start + (j + 1) * PageSize, PageSize, core_l1_ttbr1_phys[j], KernelRwDataAttribute, page_allocator);
}
/* Setup the InitArguments. */
SetInitArguments(static_cast<s32>(i), core_local_region_start_phys[i], GetInteger(core_l1_ttbr1_phys[i]));
}
/* Ensure the InitArguments are flushed to cache. */
StoreInitArguments();
}
void SetupPoolPartitionMemoryBlocks() {
/* TODO */
}
}
}

25
libraries/libmesosphere/source/kern_main.cpp Normal file
View file

@ -0,0 +1,25 @@
/*
* 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 <mesosphere.hpp>
namespace ams::kern {
NORETURN void HorizonKernelMain(s32 core_id) {
cpu::SynchronizeAllCores();
while (true) { /* ... */ }
}
}

2
libraries/libvapours/include/vapours/includes.hpp
View file

@ -31,13 +31,13 @@
#include <algorithm>
#include <iterator>
#include <limits>
#include <atomic>
#include <random>
/* Stratosphere wants stdlib headers, others do not.. */
#ifdef ATMOSPHERE_IS_STRATOSPHERE
/* C++ headers. */
#include <atomic>
#include <utility>
#include <optional>
#include <memory>

24
libraries/libvapours/include/vapours/util/util_intrusive_red_black_tree.hpp
View file

@ -133,7 +133,7 @@ namespace ams::util {
}
/* Define accessors using RB_* functions. */
void InitializeImpl() {
constexpr ALWAYS_INLINE void InitializeImpl() {
RB_INIT(&this->root);
}
@ -166,7 +166,7 @@ namespace ams::util {
}
public:
IntrusiveRedBlackTree() {
constexpr ALWAYS_INLINE IntrusiveRedBlackTree() : root() {
this->InitializeImpl();
}
@ -187,6 +187,14 @@ namespace ams::util {
return const_iterator(Traits::GetParent(static_cast<IntrusiveRedBlackTreeNode *>(nullptr)));
}
const_iterator cbegin() const {
return this->begin();
}
const_iterator cend() const {
return this->end();
}
iterator iterator_to(reference ref) {
return iterator(&ref);
}
@ -201,19 +209,19 @@ namespace ams::util {
}
reference back() {
return Traits::GetParent(this->GetMaxImpl());
return *Traits::GetParent(this->GetMaxImpl());
}
const_reference back() const {
return Traits::GetParent(this->GetMaxImpl());
return *Traits::GetParent(this->GetMaxImpl());
}
reference front() {
return Traits::GetParent(this->GetMinImpl());
return *Traits::GetParent(this->GetMinImpl());
}
const_reference front() const {
return Traits::GetParent(this->GetMinImpl());
return *Traits::GetParent(this->GetMinImpl());
}
iterator insert(reference ref) {
@ -244,7 +252,7 @@ namespace ams::util {
class IntrusiveRedBlackTreeMemberTraits<Member, Derived> {
public:
template<class Comparator>
using ListType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeMemberTraits, Comparator>;
using TreeType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeMemberTraits, Comparator>;
private:
template<class, class, class>
friend class IntrusiveRedBlackTree;
@ -276,7 +284,7 @@ namespace ams::util {
class IntrusiveRedBlackTreeBaseTraits {
public:
template<class Comparator>
using ListType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeBaseTraits, Comparator>;
using TreeType = IntrusiveRedBlackTree<Derived, IntrusiveRedBlackTreeBaseTraits, Comparator>;
private:
template<class, class, class>
friend class IntrusiveRedBlackTree;

281
mesosphere/kernel/source/arch/arm64/init/kern_init_core.cpp
View file

@ -15,24 +15,297 @@
*/
#include <mesosphere.hpp>
extern "C" void _start();
extern "C" void __end__();
namespace ams::kern::init {
/* Prototypes for functions declared in ASM that we need to reference. */
void StartOtherCore(const ams::kern::init::KInitArguments *init_args);
namespace {
constexpr size_t KernelResourceRegionSize = 0x1728000;
constexpr size_t ExtraKernelResourceSize = 0x68000;
static_assert(ExtraKernelResourceSize + KernelResourceRegionSize == 0x1790000);
/* Global Allocator. */
KInitialPageAllocator g_initial_page_allocator;
/* Global initial arguments array. */
KInitArguments g_init_arguments[cpu::NumCores];
KPhysicalAddress g_init_arguments_phys_addr[cpu::NumCores];
/* Page table attributes. */
constexpr PageTableEntry KernelRoDataAttribute(PageTableEntry::Permission_KernelR, PageTableEntry::PageAttribute_NormalMemory, PageTableEntry::Shareable_InnerShareable);
constexpr PageTableEntry KernelRwDataAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_NormalMemory, PageTableEntry::Shareable_InnerShareable);
constexpr PageTableEntry KernelMmioAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_Device_nGnRE, PageTableEntry::Shareable_OuterShareable);
void MapStackForCore(KInitialPageTable &page_table, KMemoryRegionType type, u32 core_id) {
constexpr size_t StackSize = PageSize;
constexpr size_t StackAlign = PageSize;
const KVirtualAddress stack_start_virt = KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegionWithGuard(StackSize, StackAlign, KMemoryRegionType_KernelMisc, PageSize);
const KPhysicalAddress stack_start_phys = g_initial_page_allocator.Allocate();
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(stack_start_virt), StackSize, type, core_id));
page_table.Map(stack_start_virt, StackSize, stack_start_phys, KernelRwDataAttribute, g_initial_page_allocator);
}
void StoreDataCache(const void *addr, size_t size) {
uintptr_t start = util::AlignDown(reinterpret_cast<uintptr_t>(addr), cpu::DataCacheLineSize);
uintptr_t end = reinterpret_cast<uintptr_t>(addr) + size;
for (uintptr_t cur = start; cur < end; cur += cpu::DataCacheLineSize) {
__asm__ __volatile__("dc cvac, %[cur]" :: [cur]"r"(cur) : "memory");
}
cpu::DataSynchronizationBarrier();
}
void TurnOnAllCores(uintptr_t start_other_core_phys) {
cpu::MultiprocessorAffinityRegisterAccessor mpidr;
const auto arg = mpidr.GetCpuOnArgument();
const auto current_core = mpidr.GetAff0();
for (s32 i = 0; i < static_cast<s32>(cpu::NumCores); i++) {
if (static_cast<s32>(current_core) != i) {
KSystemControl::Init::CpuOn(arg | i, start_other_core_phys, GetInteger(g_init_arguments_phys_addr[i]));
}
}
}
}
void InitializeCore(uintptr_t arg0, 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). */
MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(misc_unk_debug_phys_addr, PageSize));
/* Clear TPIDR_EL1 to zero. */
cpu::ThreadIdRegisterAccessor(0).Store();
/* Restore the page allocator state setup by kernel loader. */
g_initial_page_allocator.Initialize(initial_page_allocator_state);
/* Ensure that the T1SZ is correct (and what we expect). */
MESOSPHERE_INIT_ABORT_UNLESS((cpu::TranslationControlRegisterAccessor().GetT1Size() / L1BlockSize) == MaxPageTableEntries);
/* Create page table object for use during initialization. */
KInitialPageTable ttbr1_table(util::AlignDown(cpu::GetTtbr1El1(), PageSize), KInitialPageTable::NoClear{});
/* Initialize the slab allocator counts. */
/* TODO */
/* Insert the root block for the virtual memory tree, from which all other blocks will derive. */
KMemoryLayout::GetVirtualMemoryBlockTree().insert(*KMemoryLayout::GetMemoryBlockAllocator().Create(KernelVirtualAddressSpaceBase, KernelVirtualAddressSpaceSize, 0, 0));
/* Insert the root block for the physical memory tree, from which all other blocks will derive. */
KMemoryLayout::GetPhysicalMemoryBlockTree().insert(*KMemoryLayout::GetMemoryBlockAllocator().Create(KernelPhysicalAddressSpaceBase, KernelPhysicalAddressSpaceSize, 0, 0));
/* Save start and end for ease of use. */
const uintptr_t code_start_virt_addr = reinterpret_cast<uintptr_t>(_start);
const uintptr_t code_end_virt_addr = reinterpret_cast<uintptr_t>(__end__);
/* Setup the containing kernel region. */
constexpr size_t KernelRegionSize = 1_GB;
constexpr size_t KernelRegionAlign = 1_GB;
const KVirtualAddress kernel_region_start = util::AlignDown(code_start_virt_addr, KernelRegionAlign);
size_t kernel_region_size = KernelRegionSize;
if (!(kernel_region_start + KernelRegionSize - 1 <= KernelVirtualAddressSpaceLast)) {
kernel_region_size = KernelVirtualAddressSpaceEnd - GetInteger(kernel_region_start);
}
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(kernel_region_start), kernel_region_size, KMemoryRegionType_Kernel));
/* Setup the code region. */
constexpr size_t CodeRegionAlign = PageSize;
const KVirtualAddress code_region_start = util::AlignDown(code_start_virt_addr, CodeRegionAlign);
const KVirtualAddress code_region_end = util::AlignUp(code_end_virt_addr, CodeRegionAlign);
const size_t code_region_size = GetInteger(code_region_end) - GetInteger(code_region_start);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(code_region_start), code_region_size, KMemoryRegionType_KernelCode));
/* Setup the misc region. */
constexpr size_t MiscRegionSize = 32_MB;
constexpr size_t MiscRegionAlign = KernelAslrAlignment;
const KVirtualAddress misc_region_start = KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegion(MiscRegionSize, MiscRegionAlign, KMemoryRegionType_Kernel);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(misc_region_start), MiscRegionSize, KMemoryRegionType_KernelMisc));
/* Setup the stack region. */
constexpr size_t StackRegionSize = 14_MB;
constexpr size_t StackRegionAlign = KernelAslrAlignment;
const KVirtualAddress stack_region_start = KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegion(StackRegionSize, StackRegionAlign, KMemoryRegionType_Kernel);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(stack_region_start), StackRegionSize, KMemoryRegionType_KernelStack));
/* Decide if Kernel should have enlarged resource region (slab region + page table heap region). */
const bool use_extra_resources = KSystemControl::Init::ShouldIncreaseThreadResourceLimit();
const size_t resource_region_size = KernelResourceRegionSize + (use_extra_resources ? ExtraKernelResourceSize : 0);
/* Determine the size of the slab region. */
const size_t slab_region_size = 0x647000; /* TODO: Calculate this on the fly. */
MESOSPHERE_INIT_ABORT_UNLESS(slab_region_size <= resource_region_size);
/* Setup the slab region. */
const KPhysicalAddress code_start_phys_addr = ttbr1_table.GetPhysicalAddress(code_start_virt_addr);
const KPhysicalAddress code_end_phys_addr = code_start_phys_addr + (code_end_virt_addr - code_start_virt_addr);
const KPhysicalAddress slab_start_phys_addr = code_end_phys_addr;
const KPhysicalAddress slab_end_phys_addr = slab_start_phys_addr + slab_region_size;
constexpr size_t SlabRegionAlign = KernelAslrAlignment;
const size_t slab_region_needed_size = util::AlignUp(GetInteger(code_end_phys_addr) + slab_region_size, SlabRegionAlign) - util::AlignDown(GetInteger(code_end_phys_addr), SlabRegionAlign);
const KVirtualAddress slab_region_start = KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegion(slab_region_needed_size, SlabRegionAlign, KMemoryRegionType_Kernel) + (GetInteger(code_end_phys_addr) % SlabRegionAlign);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(slab_region_start), slab_region_size, KMemoryRegionType_KernelSlab));
/* Set the slab region's pair block. */
KMemoryLayout::GetVirtualMemoryBlockTree().FindFirstBlockByTypeAttr(KMemoryRegionType_KernelSlab)->SetPairAddress(GetInteger(slab_start_phys_addr));
/* Setup the temp region. */
constexpr size_t TempRegionSize = 128_MB;
constexpr size_t TempRegionAlign = KernelAslrAlignment;
const KVirtualAddress temp_region_start = KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegion(TempRegionSize, TempRegionAlign, KMemoryRegionType_Kernel);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(temp_region_start), TempRegionSize, KMemoryRegionType_KernelTemp));
/* Setup the Misc Unknown Debug region, if it's not zero. */
if (misc_unk_debug_phys_addr) {
constexpr size_t MiscUnknownDebugRegionSize = PageSize;
constexpr size_t MiscUnknownDebugRegionAlign = PageSize;
const KVirtualAddress misc_unk_debug_virt_addr = KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegionWithGuard(MiscUnknownDebugRegionSize, MiscUnknownDebugRegionAlign, KMemoryRegionType_KernelMisc, PageSize);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(misc_unk_debug_virt_addr), MiscUnknownDebugRegionSize, KMemoryRegionType_KernelMiscUnknownDebug));
ttbr1_table.Map(misc_unk_debug_virt_addr, MiscUnknownDebugRegionSize, misc_unk_debug_phys_addr, KernelRoDataAttribute, g_initial_page_allocator);
}
/* Setup board-specific device physical blocks. */
SetupDevicePhysicalMemoryBlocks();
/* Automatically map in devices that have auto-map attributes. */
for (auto &block : KMemoryLayout::GetPhysicalMemoryBlockTree()) {
/* We only care about automatically-mapped blocks. */
if (!block.IsDerivedFrom(KMemoryRegionType_KernelAutoMap)) {
continue;
}
/* If this block has already been mapped, no need to consider it. */
if (block.HasTypeAttribute(KMemoryRegionAttr_DidKernelMap)) {
continue;
}
/* Set the attribute to note we've mapped this block. */
block.SetTypeAttribute(KMemoryRegionAttr_DidKernelMap);
/* Create a virtual pair block and insert it into the tree. */
const KPhysicalAddress map_phys_addr = util::AlignDown(block.GetAddress(), PageSize);
const size_t map_size = util::AlignUp(block.GetEndAddress(), PageSize) - GetInteger(map_phys_addr);
const KVirtualAddress map_virt_addr = KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegionWithGuard(map_size, PageSize, KMemoryRegionType_KernelMisc, PageSize);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(map_virt_addr), map_size, KMemoryRegionType_KernelMiscMappedDevice));
block.SetPairAddress(GetInteger(map_virt_addr) + block.GetAddress() - GetInteger(map_phys_addr));
/* Map the page in to our page table. */
ttbr1_table.Map(map_virt_addr, map_size, map_phys_addr, KernelMmioAttribute, g_initial_page_allocator);
}
/* Setup the basic DRAM blocks. */
SetupDramPhysicalMemoryBlocks();
/* Insert a physical block for the kernel code region. */
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(GetInteger(code_start_phys_addr), (code_end_virt_addr - code_start_virt_addr), KMemoryRegionType_DramKernelCode));
KMemoryLayout::GetPhysicalMemoryBlockTree().FindFirstBlockByTypeAttr(KMemoryRegionType_DramKernelCode)->SetPairAddress(code_start_virt_addr);
/* Insert a physical block for the kernel slab region. */
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(GetInteger(slab_start_phys_addr), slab_region_size, KMemoryRegionType_DramKernelSlab));
KMemoryLayout::GetPhysicalMemoryBlockTree().FindFirstBlockByTypeAttr(KMemoryRegionType_DramKernelSlab)->SetPairAddress(GetInteger(slab_region_start));
/* Map and clear the slab region. */
ttbr1_table.Map(slab_region_start, slab_region_size, slab_start_phys_addr, KernelRwDataAttribute, g_initial_page_allocator);
std::memset(GetVoidPointer(slab_region_start), 0, slab_region_size);
/* 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 size_t page_table_heap_size = GetInteger(resource_end_phys_addr) - GetInteger(slab_end_phys_addr);
MESOSPHERE_INIT_ABORT_UNLESS(page_table_heap_size / 4_MB > 2);
/* Insert a physical block for the kernel page table heap region */
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(GetInteger(slab_end_phys_addr), page_table_heap_size, KMemoryRegionType_DramKernelPtHeap));
/* All DRAM blocks that we haven't tagged by this point will be mapped under the linear mapping. Tag them. */
for (auto &block : KMemoryLayout::GetPhysicalMemoryBlockTree()) {
if (block.GetType() == KMemoryRegionType_Dram) {
block.SetTypeAttribute(KMemoryRegionAttr_LinearMapped);
}
}
/* Setup the linear mapping region. */
constexpr size_t LinearRegionAlign = 1_GB;
const auto linear_extents = KMemoryLayout::GetPhysicalMemoryBlockTree().GetDerivedRegionExtents(KMemoryRegionAttr_LinearMapped);
const KPhysicalAddress aligned_linear_phys_start = util::AlignDown(linear_extents.first_block->GetAddress(), LinearRegionAlign);
const size_t linear_region_size = util::AlignUp(linear_extents.last_block->GetEndAddress(), LinearRegionAlign) - GetInteger(aligned_linear_phys_start);
const KVirtualAddress linear_region_start = KMemoryLayout::GetVirtualMemoryBlockTree().GetRandomAlignedRegionWithGuard(linear_region_size, LinearRegionAlign, KMemoryRegionType_None, LinearRegionAlign);
const uintptr_t linear_region_phys_to_virt_diff = GetInteger(linear_region_start) - GetInteger(aligned_linear_phys_start);
/* Map and create blocks for all the linearly-mapped data. */
for (auto &block : KMemoryLayout::GetPhysicalMemoryBlockTree()) {
if (!block.HasTypeAttribute(KMemoryRegionAttr_LinearMapped)) {
continue;
}
const uintptr_t block_virt_addr = block.GetAddress() + linear_region_phys_to_virt_diff;
ttbr1_table.Map(block_virt_addr, block.GetSize(), block.GetAddress(), KernelRwDataAttribute, g_initial_page_allocator);
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(block_virt_addr, block.GetSize(), GetTypeForVirtualLinearMapping(block.GetType())));
KMemoryLayout::GetVirtualMemoryBlockTree().FindContainingBlock(block_virt_addr)->SetPairAddress(block.GetAddress());
}
/* Create blocks for and map all core-specific stacks. */
for (size_t i = 0; i < cpu::NumCores; i++) {
MapStackForCore(ttbr1_table, KMemoryRegionType_KernelMiscMainStack, i);
MapStackForCore(ttbr1_table, KMemoryRegionType_KernelMiscIdleStack, i);
MapStackForCore(ttbr1_table, KMemoryRegionType_KernelMiscExceptionStack, i);
}
/* Setup the KCoreLocalRegion blocks. */
SetupCoreLocalRegionMemoryBlocks(ttbr1_table, g_initial_page_allocator);
/* Finalize the page allocator, we're done allocating at this point. */
const KPhysicalAddress final_init_page_table_end_address = g_initial_page_allocator.GetFinalNextAddress();
const size_t init_page_table_region_size = GetInteger(final_init_page_table_end_address) - GetInteger(resource_end_phys_addr);
/* Insert blocks for the initial page table region. */
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryBlockTree().Insert(GetInteger(resource_end_phys_addr), init_page_table_region_size, KMemoryRegionType_DramKernelInitPt));
MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryBlockTree().Insert(GetInteger(resource_end_phys_addr) + linear_region_phys_to_virt_diff, init_page_table_region_size, KMemoryRegionType_VirtualKernelInitPt));
/* All linear-mapped DRAM blocks that we haven't tagged by this point will be allocated to some pool partition. Tag them. */
for (auto &block : KMemoryLayout::GetPhysicalMemoryBlockTree()) {
if (block.GetType() == KMemoryRegionType_DramLinearMapped) {
block.SetType(KMemoryRegionType_DramPoolPartition);
}
}
/* Setup all other memory blocks needed to arrange the pool partitions. */
SetupPoolPartitionMemoryBlocks();
/* Cache all linear blocks in their own trees for faster access, later. */
KMemoryLayout::InitializeLinearMemoryBlockTrees(aligned_linear_phys_start, linear_region_start);
/* Turn on all other cores. */
TurnOnAllCores(GetInteger(ttbr1_table.GetPhysicalAddress(reinterpret_cast<uintptr_t>(::ams::kern::init::StartOtherCore))));
}
KPhysicalAddress GetInitArgumentsAddress(s32 core) {
return KPhysicalAddress(std::addressof(g_init_arguments[core]));
KPhysicalAddress GetInitArgumentsAddress(s32 core_id) {
return g_init_arguments_phys_addr[core_id];
}
void SetInitArguments(s32 core_id, KPhysicalAddress address, uintptr_t arg) {
KInitArguments *init_args = reinterpret_cast<KInitArguments *>(GetInteger(address));
init_args->ttbr0 = cpu::GetTtbr0El1();
init_args->ttbr1 = arg;
init_args->tcr = cpu::GetTcrEl1();
init_args->mair = cpu::GetMairEl1();
init_args->cpuactlr = cpu::GetCpuActlrEl1();
init_args->cpuectlr = cpu::GetCpuEctlrEl1();
init_args->sctlr = cpu::GetSctlrEl1();
init_args->sp = GetInteger(KMemoryLayout::GetMainStackTopAddress(core_id));
init_args->entrypoint = reinterpret_cast<uintptr_t>(::ams::kern::HorizonKernelMain);
init_args->argument = static_cast<u64>(core_id);
init_args->setup_function = reinterpret_cast<uintptr_t>(::ams::kern::init::StartOtherCore);
g_init_arguments_phys_addr[core_id] = address;
}
void StoreInitArguments() {
StoreDataCache(g_init_arguments_phys_addr, sizeof(g_init_arguments_phys_addr));
}
void InitializeDebugRegisters() {

10
mesosphere/kernel_ldr/source/arch/arm64/start.s
View file

@ -40,9 +40,10 @@ _start:
/* Stack is now set up. */
/* Apply relocations and call init array for KernelLdr. */
sub sp, sp, #0x20
sub sp, sp, #0x30
stp x0, x1, [sp, #0x00]
stp x2, x30, [sp, #0x10]
stp xzr, xzr, [sp, #0x20]
adr x0, _start
adr x1, __external_references
ldr x1, [x1, #0x18] /* .dynamic. */
@ -75,6 +76,11 @@ _start:
bl _ZN3ams4kern4init6loader4MainEmPNS1_12KernelLayoutEm
str x0, [sp, #0x00]
/* Get ams::kern::init::loader::AllocateKernelInitStack(). */
bl _ZN3ams4kern4init6loader23AllocateKernelInitStackEv
str x0, [sp, #0x20]
/* Call ams::kern::init::loader::GetFinalPageAllocatorState() */
bl _ZN3ams4kern4init6loader26GetFinalPageAllocatorStateEv
@ -85,6 +91,8 @@ _start:
ldr x1, [sp, #0x18] /* Return address to Kernel */
ldr x2, [sp, #0x00] /* Relocated kernel base address diff. */
add x1, x2, x1
ldr x2, [sp, #0x20]
mov sp, x2
br x1

8
mesosphere/kernel_ldr/source/kern_init_loader.cpp
View file

@ -97,8 +97,8 @@ namespace ams::kern::init::loader {
/* TODO: Define these bits properly elsewhere, document exactly what each bit set is doing .*/
constexpr u64 MairValue = 0x0000000044FF0400ul;
constexpr u64 TcrValue = 0x00000011B5193519ul;
cpu::SetMairEl1(MairValue);
cpu::SetTcrEl1(TcrValue);
cpu::MemoryAccessIndirectionRegisterAccessor(MairValue).Store();
cpu::TranslationControlRegisterAccessor(TcrValue).Store();
/* Perform cpu-specific setup. */
{
@ -308,6 +308,10 @@ namespace ams::kern::init::loader {
return GetInteger(virtual_base_address) - base_address;
}
KPhysicalAddress AllocateKernelInitStack() {
return g_initial_page_allocator.Allocate() + PageSize;
}
uintptr_t GetFinalPageAllocatorState() {
return g_initial_page_allocator.GetFinalState();
}