1
0
Fork 0
mirror of https://github.com/Atmosphere-NX/Atmosphere.git synced 2024-11-27 06:12:15 +00:00
Atmosphere/libraries/libmesosphere/source/kern_main.cpp

163 lines
6.2 KiB
C++
Raw Normal View History

/*
* 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 {
template<typename F>
ALWAYS_INLINE void DoOnEachCoreInOrder(s32 core_id, F f) {
cpu::SynchronizeAllCores();
for (size_t i = 0; i < cpu::NumCores; i++) {
if (static_cast<s32>(i) == core_id) {
f();
}
cpu::SynchronizeAllCores();
}
}
}
NORETURN void HorizonKernelMain(s32 core_id) {
/* Setup the Core Local Region, and note that we're initializing. */
Kernel::InitializeCoreLocalRegion(core_id);
Kernel::SetState(Kernel::State::Initializing);
/* Ensure that all cores get to this point before proceeding. */
cpu::SynchronizeAllCores();
/* Initialize the main and idle thread for each core. */
DoOnEachCoreInOrder(core_id, [=]() ALWAYS_INLINE_LAMBDA {
Kernel::InitializeMainAndIdleThreads(core_id);
});
2020-01-30 09:41:59 +00:00
if (core_id == 0) {
/* Initialize the carveout and the system resource limit. */
KSystemControl::InitializePhase1();
2020-02-06 09:05:35 +00:00
/* Synchronize all cores before proceeding, to ensure access to the global rng is consistent. */
cpu::SynchronizeAllCores();
/* Initialize the memory manager and the KPageBuffer slabheap. */
2020-02-07 01:40:57 +00:00
{
const auto &management_region = KMemoryLayout::GetPoolManagementRegion();
MESOSPHERE_ABORT_UNLESS(management_region.GetEndAddress() != 0);
Kernel::GetMemoryManager().Initialize(management_region.GetAddress(), management_region.GetSize());
init::InitializeKPageBufferSlabHeap();
2020-02-07 01:40:57 +00:00
}
/* Copy the Initial Process Binary to safe memory. */
CopyInitialProcessBinaryToKernelMemory();
/* Print out information about the kernel. */
Kernel::PrintLayout();
/* Initialize the KObject Slab Heaps. */
2020-01-30 09:41:59 +00:00
init::InitializeSlabHeaps();
/* Initialize the Dynamic Slab Heaps. */
{
const auto &pt_heap_region = KMemoryLayout::GetPageTableHeapRegion();
MESOSPHERE_ABORT_UNLESS(pt_heap_region.GetEndAddress() != 0);
Kernel::InitializeResourceManagers(pt_heap_region.GetAddress(), pt_heap_region.GetSize());
}
} else {
/* Synchronize all cores before proceeding, to ensure access to the global rng is consistent. */
cpu::SynchronizeAllCores();
2020-01-30 09:41:59 +00:00
}
/* Initialize the supervisor page table for each core. */
DoOnEachCoreInOrder(core_id, [=]() ALWAYS_INLINE_LAMBDA {
KPageTable::Initialize(core_id);
Kernel::GetKernelPageTable().Initialize(core_id);
});
/* Activate the supervisor page table for each core. */
DoOnEachCoreInOrder(core_id, [=]() ALWAYS_INLINE_LAMBDA {
Kernel::GetKernelPageTable().ActivateForInit();
});
/* NOTE: Kernel calls on each core a nullsub here on retail kernel. */
/* Register the main/idle threads and initialize the interrupt task manager. */
DoOnEachCoreInOrder(core_id, [=]() ALWAYS_INLINE_LAMBDA {
KThread::Register(std::addressof(Kernel::GetMainThread(core_id)));
KThread::Register(std::addressof(Kernel::GetIdleThread(core_id)));
Kernel::GetInterruptTaskManager().Initialize();
});
/* Activate the scheduler and enable interrupts. */
DoOnEachCoreInOrder(core_id, [=]() ALWAYS_INLINE_LAMBDA {
Kernel::GetScheduler().Activate();
KInterruptManager::EnableInterrupts();
});
/* Initialize cpu interrupt threads. */
2020-02-14 10:20:33 +00:00
cpu::InitializeInterruptThreads(core_id);
/* Initialize the DPC manager. */
KDpcManager::Initialize();
cpu::SynchronizeAllCores();
/* Perform more core-0 specific initialization. */
if (core_id == 0) {
/* Initialize the exit worker manager, so that threads and processes may exit cleanly. */
2020-02-14 10:56:42 +00:00
Kernel::GetWorkerTaskManager(KWorkerTaskManager::WorkerType_Exit).Initialize(KWorkerTaskManager::WorkerType_Exit, KWorkerTaskManager::ExitWorkerPriority);
/* Setup so that we may sleep later, and reserve memory for secure applets. */
KSystemControl::InitializePhase2();
2020-02-15 08:00:35 +00:00
/* Initialize the SMMU. */
KDeviceAddressSpace::Initialize();
2020-02-15 11:44:41 +00:00
/* Load the initial processes. */
CreateAndRunInitialProcesses();
/* We're done initializing! */
Kernel::SetState(Kernel::State::Initialized);
/* Resume all threads suspended while we initialized. */
KThread::ResumeThreadsSuspendedForInit();
/* Validate that all reserved dram blocks are valid. */
for (const auto &region : KMemoryLayout::GetPhysicalMemoryRegionTree()) {
if (region.IsDerivedFrom(KMemoryRegionType_DramReservedBase)) {
MESOSPHERE_ABORT_UNLESS(region.GetEndAddress() != 0);
}
}
}
2020-02-06 13:34:38 +00:00
cpu::SynchronizeAllCores();
/* Set the current thread priority to idle. */
GetCurrentThread().SetPriorityToIdle();
/* Exit the main thread. */
{
auto &main_thread = Kernel::GetMainThread(core_id);
main_thread.Open();
main_thread.Exit();
}
/* Main() is done, and we should never get to this point. */
MESOSPHERE_PANIC("Main Thread continued after exit.");
2020-08-14 01:28:29 +01:00
AMS_INFINITE_LOOP();
}
}