mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-24 12:52:07 +00:00
96f95b9f95
* result: try out some experimental shenanigans * result: sketch out some more shenanigans * result: see what it looks like to convert kernel to use result conds instead of guards * make rest of kernel use experimental new macro-ing
295 lines
12 KiB
C++
295 lines
12 KiB
C++
/*
|
|
* Copyright (c) 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>
|
|
#if defined(ATMOSPHERE_ARCH_ARM64)
|
|
#include <mesosphere/arch/arm64/kern_secure_monitor_base.hpp>
|
|
#endif
|
|
|
|
namespace ams::kern {
|
|
|
|
/* Initialization. */
|
|
size_t KSystemControlBase::Init::GetRealMemorySize() {
|
|
return ams::kern::MainMemorySize;
|
|
}
|
|
|
|
size_t KSystemControlBase::Init::GetIntendedMemorySize() {
|
|
return ams::kern::MainMemorySize;
|
|
}
|
|
|
|
KPhysicalAddress KSystemControlBase::Init::GetKernelPhysicalBaseAddress(KPhysicalAddress base_address) {
|
|
const size_t real_dram_size = KSystemControl::Init::GetRealMemorySize();
|
|
const size_t intended_dram_size = KSystemControl::Init::GetIntendedMemorySize();
|
|
if (intended_dram_size * 2 < real_dram_size) {
|
|
return base_address;
|
|
} else {
|
|
return base_address + ((real_dram_size - intended_dram_size) / 2);
|
|
}
|
|
}
|
|
|
|
void KSystemControlBase::Init::GetInitialProcessBinaryLayout(InitialProcessBinaryLayout *out) {
|
|
*out = {
|
|
.address = GetInteger(KSystemControl::Init::GetKernelPhysicalBaseAddress(ams::kern::MainMemoryAddress)) + KSystemControl::Init::GetIntendedMemorySize() - KTraceBufferSize - InitialProcessBinarySizeMax,
|
|
._08 = 0,
|
|
};
|
|
}
|
|
|
|
|
|
bool KSystemControlBase::Init::ShouldIncreaseThreadResourceLimit() {
|
|
return true;
|
|
}
|
|
|
|
|
|
size_t KSystemControlBase::Init::GetApplicationPoolSize() {
|
|
return 0;
|
|
}
|
|
|
|
size_t KSystemControlBase::Init::GetAppletPoolSize() {
|
|
return 0;
|
|
}
|
|
|
|
size_t KSystemControlBase::Init::GetMinimumNonSecureSystemPoolSize() {
|
|
return 0;
|
|
}
|
|
|
|
u8 KSystemControlBase::Init::GetDebugLogUartPort() {
|
|
return 0;
|
|
}
|
|
|
|
void KSystemControlBase::Init::CpuOn(u64 core_id, uintptr_t entrypoint, uintptr_t arg) {
|
|
#if defined(ATMOSPHERE_ARCH_ARM64)
|
|
MESOSPHERE_INIT_ABORT_UNLESS((::ams::kern::arch::arm64::smc::CpuOn<0, false>(core_id, entrypoint, arg)) == 0);
|
|
#else
|
|
AMS_INFINITE_LOOP();
|
|
#endif
|
|
}
|
|
|
|
/* Randomness for Initialization. */
|
|
void KSystemControlBase::Init::GenerateRandom(u64 *dst, size_t count) {
|
|
if (AMS_UNLIKELY(!s_initialized_random_generator)) {
|
|
const u64 seed = KHardwareTimer::GetTick();
|
|
s_random_generator.Initialize(reinterpret_cast<const u32*>(std::addressof(seed)), sizeof(seed) / sizeof(u32));
|
|
s_initialized_random_generator = true;
|
|
}
|
|
|
|
for (size_t i = 0; i < count; ++i) {
|
|
dst[i] = s_random_generator.GenerateRandomU64();
|
|
}
|
|
}
|
|
|
|
u64 KSystemControlBase::Init::GenerateRandomRange(u64 min, u64 max) {
|
|
if (AMS_UNLIKELY(!s_initialized_random_generator)) {
|
|
const u64 seed = KHardwareTimer::GetTick();
|
|
s_random_generator.Initialize(reinterpret_cast<const u32*>(std::addressof(seed)), sizeof(seed) / sizeof(u32));
|
|
s_initialized_random_generator = true;
|
|
}
|
|
|
|
return KSystemControlBase::GenerateUniformRange(min, max, []() ALWAYS_INLINE_LAMBDA -> u64 { return s_random_generator.GenerateRandomU64(); });
|
|
}
|
|
|
|
/* System Initialization. */
|
|
void KSystemControlBase::InitializePhase1(bool skip_target_system) {
|
|
/* Initialize the rng, if we somehow haven't already. */
|
|
if (AMS_UNLIKELY(!s_initialized_random_generator)) {
|
|
const u64 seed = KHardwareTimer::GetTick();
|
|
s_random_generator.Initialize(reinterpret_cast<const u32*>(std::addressof(seed)), sizeof(seed) / sizeof(u32));
|
|
s_initialized_random_generator = true;
|
|
}
|
|
|
|
/* Configure KTargetSystem, if we haven't already by an implementation SystemControl. */
|
|
if (!skip_target_system) {
|
|
/* Set IsDebugMode. */
|
|
{
|
|
KTargetSystem::SetIsDebugMode(true);
|
|
|
|
/* If debug mode, we want to initialize uart logging. */
|
|
KTargetSystem::EnableDebugLogging(true);
|
|
KDebugLog::Initialize();
|
|
}
|
|
|
|
/* Set Kernel Configuration. */
|
|
{
|
|
KTargetSystem::EnableDebugMemoryFill(false);
|
|
KTargetSystem::EnableUserExceptionHandlers(true);
|
|
KTargetSystem::EnableDynamicResourceLimits(true);
|
|
KTargetSystem::EnableUserPmuAccess(false);
|
|
}
|
|
|
|
/* Set Kernel Debugging. */
|
|
{
|
|
/* NOTE: This is used to restrict access to SvcKernelDebug/SvcChangeKernelTraceState. */
|
|
/* Mesosphere may wish to not require this, as we'd ideally keep ProgramVerification enabled for userland. */
|
|
KTargetSystem::EnableKernelDebugging(true);
|
|
}
|
|
}
|
|
|
|
/* System ResourceLimit initialization. */
|
|
{
|
|
/* Construct the resource limit object. */
|
|
KResourceLimit &sys_res_limit = Kernel::GetSystemResourceLimit();
|
|
KAutoObject::Create<KResourceLimit>(std::addressof(sys_res_limit));
|
|
sys_res_limit.Initialize();
|
|
|
|
/* Set the initial limits. */
|
|
const auto [total_memory_size, kernel_memory_size] = KMemoryLayout::GetTotalAndKernelMemorySizes();
|
|
const auto &slab_counts = init::GetSlabResourceCounts();
|
|
MESOSPHERE_R_ABORT_UNLESS(sys_res_limit.SetLimitValue(ams::svc::LimitableResource_PhysicalMemoryMax, total_memory_size));
|
|
MESOSPHERE_R_ABORT_UNLESS(sys_res_limit.SetLimitValue(ams::svc::LimitableResource_ThreadCountMax, slab_counts.num_KThread));
|
|
MESOSPHERE_R_ABORT_UNLESS(sys_res_limit.SetLimitValue(ams::svc::LimitableResource_EventCountMax, slab_counts.num_KEvent));
|
|
MESOSPHERE_R_ABORT_UNLESS(sys_res_limit.SetLimitValue(ams::svc::LimitableResource_TransferMemoryCountMax, slab_counts.num_KTransferMemory));
|
|
MESOSPHERE_R_ABORT_UNLESS(sys_res_limit.SetLimitValue(ams::svc::LimitableResource_SessionCountMax, slab_counts.num_KSession));
|
|
|
|
/* Reserve system memory. */
|
|
MESOSPHERE_ABORT_UNLESS(sys_res_limit.Reserve(ams::svc::LimitableResource_PhysicalMemoryMax, kernel_memory_size));
|
|
}
|
|
}
|
|
|
|
void KSystemControlBase::InitializePhase2() {
|
|
/* Initialize KTrace. */
|
|
if constexpr (IsKTraceEnabled) {
|
|
const auto &ktrace = KMemoryLayout::GetKernelTraceBufferRegion();
|
|
KTrace::Initialize(ktrace.GetAddress(), ktrace.GetSize());
|
|
}
|
|
}
|
|
|
|
u32 KSystemControlBase::GetCreateProcessMemoryPool() {
|
|
return KMemoryManager::Pool_System;
|
|
}
|
|
|
|
/* Privileged Access. */
|
|
void KSystemControlBase::ReadWriteRegisterPrivileged(u32 *out, ams::svc::PhysicalAddress address, u32 mask, u32 value) {
|
|
/* TODO */
|
|
MESOSPHERE_UNUSED(out, address, mask, value);
|
|
MESOSPHERE_UNIMPLEMENTED();
|
|
}
|
|
|
|
Result KSystemControlBase::ReadWriteRegister(u32 *out, ams::svc::PhysicalAddress address, u32 mask, u32 value) {
|
|
MESOSPHERE_UNUSED(out, address, mask, value);
|
|
R_THROW(svc::ResultNotImplemented());
|
|
}
|
|
|
|
/* Randomness. */
|
|
void KSystemControlBase::GenerateRandom(u64 *dst, size_t count) {
|
|
KScopedInterruptDisable intr_disable;
|
|
KScopedSpinLock lk(s_random_lock);
|
|
|
|
for (size_t i = 0; i < count; ++i) {
|
|
dst[i] = s_random_generator.GenerateRandomU64();
|
|
}
|
|
}
|
|
|
|
u64 KSystemControlBase::GenerateRandomRange(u64 min, u64 max) {
|
|
KScopedInterruptDisable intr_disable;
|
|
KScopedSpinLock lk(s_random_lock);
|
|
|
|
return KSystemControlBase::GenerateUniformRange(min, max, []() ALWAYS_INLINE_LAMBDA -> u64 { return s_random_generator.GenerateRandomU64(); });
|
|
}
|
|
|
|
u64 KSystemControlBase::GenerateRandomU64() {
|
|
KScopedInterruptDisable intr_disable;
|
|
KScopedSpinLock lk(s_random_lock);
|
|
|
|
return s_random_generator.GenerateRandomU64();
|
|
}
|
|
|
|
void KSystemControlBase::SleepSystem() {
|
|
MESOSPHERE_LOG("SleepSystem() was called\n");
|
|
}
|
|
|
|
void KSystemControlBase::StopSystem(void *) {
|
|
MESOSPHERE_LOG("KSystemControlBase::StopSystem\n");
|
|
AMS_INFINITE_LOOP();
|
|
}
|
|
|
|
/* User access. */
|
|
#if defined(ATMOSPHERE_ARCH_ARM64)
|
|
void KSystemControlBase::CallSecureMonitorFromUser(ams::svc::lp64::SecureMonitorArguments *args) {
|
|
/* Get the function id for the current call. */
|
|
u64 function_id = args->r[0];
|
|
|
|
/* We'll need to map in pages if arguments are pointers. Prepare page groups to do so. */
|
|
auto &page_table = GetCurrentProcess().GetPageTable();
|
|
auto *bim = page_table.GetBlockInfoManager();
|
|
|
|
constexpr size_t MaxMappedRegisters = 7;
|
|
std::array<KPageGroup, MaxMappedRegisters> page_groups = { KPageGroup(bim), KPageGroup(bim), KPageGroup(bim), KPageGroup(bim), KPageGroup(bim), KPageGroup(bim), KPageGroup(bim), };
|
|
|
|
for (size_t i = 0; i < MaxMappedRegisters; i++) {
|
|
const size_t reg_id = i + 1;
|
|
if (function_id & (1ul << (8 + reg_id))) {
|
|
/* Create and open a new page group for the address. */
|
|
KVirtualAddress virt_addr = args->r[reg_id];
|
|
|
|
if (R_SUCCEEDED(page_table.MakeAndOpenPageGroup(std::addressof(page_groups[i]), util::AlignDown(GetInteger(virt_addr), PageSize), 1, KMemoryState_None, KMemoryState_None, KMemoryPermission_UserReadWrite, KMemoryPermission_UserReadWrite, KMemoryAttribute_None, KMemoryAttribute_None))) {
|
|
/* Translate the virtual address to a physical address. */
|
|
const auto it = page_groups[i].begin();
|
|
MESOSPHERE_ASSERT(it != page_groups[i].end());
|
|
MESOSPHERE_ASSERT(it->GetNumPages() == 1);
|
|
|
|
args->r[reg_id] = GetInteger(it->GetAddress()) | (GetInteger(virt_addr) & (PageSize - 1));
|
|
} else {
|
|
/* If we couldn't map, we should clear the address. */
|
|
args->r[reg_id] = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Invoke the secure monitor. */
|
|
KSystemControl::CallSecureMonitorFromUserImpl(args);
|
|
|
|
/* Make sure that we close any pages that we opened. */
|
|
for (size_t i = 0; i < MaxMappedRegisters; i++) {
|
|
page_groups[i].Close();
|
|
}
|
|
}
|
|
|
|
void KSystemControlBase::CallSecureMonitorFromUserImpl(ams::svc::lp64::SecureMonitorArguments *args) {
|
|
/* By default, we don't actually support secure monitor, so just set args to a failure code. */
|
|
args->r[0] = 1;
|
|
}
|
|
#endif
|
|
|
|
/* Secure Memory. */
|
|
size_t KSystemControlBase::CalculateRequiredSecureMemorySize(size_t size, u32 pool) {
|
|
MESOSPHERE_UNUSED(pool);
|
|
return size;
|
|
}
|
|
|
|
Result KSystemControlBase::AllocateSecureMemory(KVirtualAddress *out, size_t size, u32 pool) {
|
|
/* Ensure the size is aligned. */
|
|
constexpr size_t Alignment = PageSize;
|
|
R_UNLESS(util::IsAligned(size, Alignment), svc::ResultInvalidSize());
|
|
|
|
/* Allocate the memory. */
|
|
const size_t num_pages = size / PageSize;
|
|
const KPhysicalAddress paddr = Kernel::GetMemoryManager().AllocateAndOpenContinuous(num_pages, Alignment / PageSize, KMemoryManager::EncodeOption(static_cast<KMemoryManager::Pool>(pool), KMemoryManager::Direction_FromFront));
|
|
R_UNLESS(paddr != Null<KPhysicalAddress>, svc::ResultOutOfMemory());
|
|
|
|
*out = KPageTable::GetHeapVirtualAddress(paddr);
|
|
R_SUCCEED();
|
|
}
|
|
|
|
void KSystemControlBase::FreeSecureMemory(KVirtualAddress address, size_t size, u32 pool) {
|
|
/* Ensure the size is aligned. */
|
|
constexpr size_t Alignment = PageSize;
|
|
MESOSPHERE_UNUSED(pool);
|
|
MESOSPHERE_ABORT_UNLESS(util::IsAligned(GetInteger(address), Alignment));
|
|
MESOSPHERE_ABORT_UNLESS(util::IsAligned(size, Alignment));
|
|
|
|
/* Close the secure region's pages. */
|
|
Kernel::GetMemoryManager().Close(KPageTable::GetHeapPhysicalAddress(address), size / PageSize);
|
|
}
|
|
|
|
}
|