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https://github.com/Atmosphere-NX/Atmosphere
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496adb0018
* Work around Clang's incomplete C++20 support for omitting typename * vapours: fix Clang error about missing return in constexpr function * stratosphere: fix call to non-constexpr strlen in constexpr function strlen being constexpr is a non-compliant GCC extension; Clang explicitly rejects it: https://reviews.llvm.org/D23692 * stratosphere: add a bunch of missing override specifiers * stratosphere: work around Clang consteval bug Minimal example: https://godbolt.org/z/MoM64v93M The issue seems to be that Clang does not consider f(x) to be a constant expression if x comes from a template argument that isn't a non-type auto template argument (???) We can work around this by relaxing GetMessageHeaderForCheck (by using constexpr instead of consteval). This produces no functional changes because the result of GetMessageHeaderForCheck() is assigned to a constexpr variable, so the result is guaranteed to be computed at compile-time. * stratosphere: fix missing require clauses in definitions GCC not requiring the require clauses to be repeated for member definitions is actually a compiler bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96830 Clang rejects declarations with missing require clauses. * Fix ALWAYS_INLINE_LAMBDA and parameter list relative order While GCC doesn't seem to care about the position of the always_inline attribute relative to the parameter list, Clang is very picky and requires the attribute to appear after the parameter list (and before a trailing return type) * stratosphere: fix static constexpr member variable with incomplete type GCC accepts this for some reason (because of the lambda?) but Clang correctly rejects this.
277 lines
21 KiB
C++
277 lines
21 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern {
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namespace {
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constexpr size_t ReservedEarlyDramSize = 0x60000;
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constexpr size_t CarveoutAlignment = 0x20000;
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constexpr size_t CarveoutSizeMax = 512_MB - CarveoutAlignment;
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template<typename... T> requires (std::same_as<T, KMemoryRegionAttr> && ...)
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constexpr ALWAYS_INLINE KMemoryRegionType GetMemoryRegionType(KMemoryRegionType base, T... attr) {
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return util::FromUnderlying<KMemoryRegionType>(util::ToUnderlying(base) | (util::ToUnderlying<T>(attr) | ...));
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}
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ALWAYS_INLINE bool SetupUartPhysicalMemoryRegion() {
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#if defined(MESOSPHERE_DEBUG_LOG_USE_UART)
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switch (KSystemControl::Init::GetDebugLogUartPort()) {
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case 0: return KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x70006000, 0x40, GetMemoryRegionType(KMemoryRegionType_Uart, KMemoryRegionAttr_ShouldKernelMap));
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case 1: return KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x70006040, 0x40, GetMemoryRegionType(KMemoryRegionType_Uart, KMemoryRegionAttr_ShouldKernelMap));
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case 2: return KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x70006200, 0x100, GetMemoryRegionType(KMemoryRegionType_Uart, KMemoryRegionAttr_ShouldKernelMap));
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case 3: return KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x70006300, 0x100, GetMemoryRegionType(KMemoryRegionType_Uart, KMemoryRegionAttr_ShouldKernelMap));
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default: return false;
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}
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#elif defined(MESOSPHERE_DEBUG_LOG_USE_IRAM_RINGBUFFER)
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return true;
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#else
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#error "Unknown Debug UART device!"
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#endif
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}
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ALWAYS_INLINE bool SetupPowerManagementControllerMemoryRegion() {
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/* For backwards compatibility, the PMC must remain mappable on < 2.0.0. */
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const KMemoryRegionAttr rtc_restrict_attr = GetTargetFirmware() >= TargetFirmware_2_0_0 ? KMemoryRegionAttr_NoUserMap : static_cast<KMemoryRegionAttr>(0);
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const KMemoryRegionAttr pmc_restrict_attr = GetTargetFirmware() >= TargetFirmware_2_0_0 ? KMemoryRegionAttr_NoUserMap : KMemoryRegionAttr_ShouldKernelMap;
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return KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x7000E000, 0x400, GetMemoryRegionType(KMemoryRegionType_None, rtc_restrict_attr)) &&
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KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x7000E400, 0xC00, GetMemoryRegionType(KMemoryRegionType_PowerManagementController, pmc_restrict_attr));
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}
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void InsertPoolPartitionRegionIntoBothTrees(size_t start, size_t size, KMemoryRegionType phys_type, KMemoryRegionType virt_type, u32 &cur_attr) {
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const u32 attr = cur_attr++;
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(start, size, phys_type, attr));
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const KMemoryRegion *phys = KMemoryLayout::GetPhysicalMemoryRegionTree().FindByTypeAndAttribute(phys_type, attr);
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MESOSPHERE_INIT_ABORT_UNLESS(phys != nullptr);
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MESOSPHERE_INIT_ABORT_UNLESS(phys->GetEndAddress() != 0);
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetVirtualMemoryRegionTree().Insert(phys->GetPairAddress(), size, virt_type, attr));
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}
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}
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namespace init {
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void SetupDevicePhysicalMemoryRegions() {
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/* TODO: Give these constexpr defines somewhere? */
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MESOSPHERE_INIT_ABORT_UNLESS(SetupUartPhysicalMemoryRegion());
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MESOSPHERE_INIT_ABORT_UNLESS(SetupPowerManagementControllerMemoryRegion());
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x70019000, 0x1000, GetMemoryRegionType(KMemoryRegionType_MemoryController, KMemoryRegionAttr_NoUserMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x7001C000, 0x1000, GetMemoryRegionType(KMemoryRegionType_MemoryController0, KMemoryRegionAttr_NoUserMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x7001D000, 0x1000, GetMemoryRegionType(KMemoryRegionType_MemoryController1, KMemoryRegionAttr_NoUserMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x50040000, 0x1000, GetMemoryRegionType(KMemoryRegionType_None, KMemoryRegionAttr_NoUserMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x50041000, 0x1000, GetMemoryRegionType(KMemoryRegionType_InterruptDistributor, KMemoryRegionAttr_ShouldKernelMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x50042000, 0x1000, GetMemoryRegionType(KMemoryRegionType_InterruptCpuInterface, KMemoryRegionAttr_ShouldKernelMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x50043000, 0x1D000, GetMemoryRegionType(KMemoryRegionType_None, KMemoryRegionAttr_NoUserMap)));
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/* Map IRAM unconditionally, to support debug-logging-to-iram build config. */
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x40000000, 0x40000, GetMemoryRegionType(KMemoryRegionType_LegacyLpsIram, KMemoryRegionAttr_ShouldKernelMap)));
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if (GetTargetFirmware() >= TargetFirmware_2_0_0) {
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/* Prevent mapping the bpmp exception vectors or the ipatch region. */
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x6000F000, 0x1000, GetMemoryRegionType(KMemoryRegionType_None, KMemoryRegionAttr_NoUserMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x6001DC00, 0x400, GetMemoryRegionType(KMemoryRegionType_None, KMemoryRegionAttr_NoUserMap)));
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} else {
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/* Map devices required for legacy lps driver. */
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x6000F000, 0x1000, GetMemoryRegionType(KMemoryRegionType_LegacyLpsExceptionVectors, KMemoryRegionAttr_ShouldKernelMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x60007000, 0x1000, GetMemoryRegionType(KMemoryRegionType_LegacyLpsFlowController, KMemoryRegionAttr_ShouldKernelMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x60004000, 0x1000, GetMemoryRegionType(KMemoryRegionType_LegacyLpsPrimaryICtlr, KMemoryRegionAttr_ShouldKernelMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x60001000, 0x1000, GetMemoryRegionType(KMemoryRegionType_LegacyLpsSemaphore, KMemoryRegionAttr_ShouldKernelMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x70016000, 0x1000, GetMemoryRegionType(KMemoryRegionType_LegacyLpsAtomics, KMemoryRegionAttr_ShouldKernelMap)));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(0x60006000, 0x1000, GetMemoryRegionType(KMemoryRegionType_LegacyLpsClkRst, KMemoryRegionAttr_ShouldKernelMap)));
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}
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}
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void SetupDramPhysicalMemoryRegions() {
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const size_t intended_memory_size = KSystemControl::Init::GetIntendedMemorySize();
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const KPhysicalAddress physical_memory_base_address = KSystemControl::Init::GetKernelPhysicalBaseAddress(ams::kern::MainMemoryAddress);
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/* Insert blocks into the tree. */
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(GetInteger(physical_memory_base_address), intended_memory_size, KMemoryRegionType_Dram));
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(GetInteger(physical_memory_base_address), ReservedEarlyDramSize, KMemoryRegionType_DramReservedEarly));
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/* Insert the KTrace block at the end of Dram, if KTrace is enabled. */
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static_assert(!IsKTraceEnabled || KTraceBufferSize > 0);
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if constexpr (IsKTraceEnabled) {
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const KPhysicalAddress ktrace_buffer_phys_addr = physical_memory_base_address + intended_memory_size - KTraceBufferSize;
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MESOSPHERE_INIT_ABORT_UNLESS(KMemoryLayout::GetPhysicalMemoryRegionTree().Insert(GetInteger(ktrace_buffer_phys_addr), KTraceBufferSize, KMemoryRegionType_KernelTraceBuffer));
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}
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}
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void SetupPoolPartitionMemoryRegions() {
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/* Start by identifying the extents of the DRAM memory region. */
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const auto dram_extents = KMemoryLayout::GetMainMemoryPhysicalExtents();
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MESOSPHERE_INIT_ABORT_UNLESS(dram_extents.GetEndAddress() != 0);
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/* Determine the end of the pool region. */
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const uintptr_t pool_end = dram_extents.GetEndAddress() - KTraceBufferSize;
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/* Find the start of the kernel DRAM region. */
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const KMemoryRegion *kernel_dram_region = KMemoryLayout::GetPhysicalMemoryRegionTree().FindFirstDerived(KMemoryRegionType_DramKernelBase);
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MESOSPHERE_INIT_ABORT_UNLESS(kernel_dram_region != nullptr);
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const uintptr_t kernel_dram_start = kernel_dram_region->GetAddress();
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MESOSPHERE_INIT_ABORT_UNLESS(util::IsAligned(kernel_dram_start, CarveoutAlignment));
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/* Find the start of the pool partitions region. */
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const KMemoryRegion *pool_partitions_region = KMemoryLayout::GetPhysicalMemoryRegionTree().FindByTypeAndAttribute(KMemoryRegionType_DramPoolPartition, 0);
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MESOSPHERE_INIT_ABORT_UNLESS(pool_partitions_region != nullptr);
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const uintptr_t pool_partitions_start = pool_partitions_region->GetAddress();
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/* Setup the pool partition layouts. */
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if (GetTargetFirmware() >= TargetFirmware_5_0_0) {
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/* On 5.0.0+, setup modern 4-pool-partition layout. */
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/* Get Application and Applet pool sizes. */
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const size_t application_pool_size = KSystemControl::Init::GetApplicationPoolSize();
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const size_t applet_pool_size = KSystemControl::Init::GetAppletPoolSize();
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const size_t unsafe_system_pool_min_size = KSystemControl::Init::GetMinimumNonSecureSystemPoolSize();
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/* Decide on starting addresses for our pools. */
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const uintptr_t application_pool_start = pool_end - application_pool_size;
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const uintptr_t applet_pool_start = application_pool_start - applet_pool_size;
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const uintptr_t unsafe_system_pool_start = std::min(kernel_dram_start + CarveoutSizeMax, util::AlignDown(applet_pool_start - unsafe_system_pool_min_size, CarveoutAlignment));
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const size_t unsafe_system_pool_size = applet_pool_start - unsafe_system_pool_start;
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/* We want to arrange application pool depending on where the middle of dram is. */
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const uintptr_t dram_midpoint = (dram_extents.GetAddress() + dram_extents.GetEndAddress()) / 2;
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u32 cur_pool_attr = 0;
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size_t total_overhead_size = 0;
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if (dram_extents.GetEndAddress() <= dram_midpoint || dram_midpoint <= application_pool_start) {
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InsertPoolPartitionRegionIntoBothTrees(application_pool_start, application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(application_pool_size);
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} else {
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const size_t first_application_pool_size = dram_midpoint - application_pool_start;
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const size_t second_application_pool_size = application_pool_start + application_pool_size - dram_midpoint;
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InsertPoolPartitionRegionIntoBothTrees(application_pool_start, first_application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
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InsertPoolPartitionRegionIntoBothTrees(dram_midpoint, second_application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(first_application_pool_size);
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(second_application_pool_size);
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}
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/* Insert the applet pool. */
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InsertPoolPartitionRegionIntoBothTrees(applet_pool_start, applet_pool_size, KMemoryRegionType_DramAppletPool, KMemoryRegionType_VirtualDramAppletPool, cur_pool_attr);
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(applet_pool_size);
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/* Insert the nonsecure system pool. */
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InsertPoolPartitionRegionIntoBothTrees(unsafe_system_pool_start, unsafe_system_pool_size, KMemoryRegionType_DramSystemNonSecurePool, KMemoryRegionType_VirtualDramSystemNonSecurePool, cur_pool_attr);
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(unsafe_system_pool_size);
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/* Determine final total overhead size. */
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize((unsafe_system_pool_start - pool_partitions_start) - total_overhead_size);
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/* NOTE: Nintendo's kernel has layout [System, Management] but we have [Management, System]. This ensures the four UserPool regions are contiguous. */
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/* Insert the system pool. */
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const uintptr_t system_pool_start = pool_partitions_start + total_overhead_size;
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const size_t system_pool_size = unsafe_system_pool_start - system_pool_start;
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InsertPoolPartitionRegionIntoBothTrees(system_pool_start, system_pool_size, KMemoryRegionType_DramSystemPool, KMemoryRegionType_VirtualDramSystemPool, cur_pool_attr);
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/* Insert the pool management region. */
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const uintptr_t pool_management_start = pool_partitions_start;
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const size_t pool_management_size = total_overhead_size;
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u32 pool_management_attr = 0;
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InsertPoolPartitionRegionIntoBothTrees(pool_management_start, pool_management_size, KMemoryRegionType_DramPoolManagement, KMemoryRegionType_VirtualDramPoolManagement, pool_management_attr);
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} else {
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/* On < 5.0.0, setup a legacy 2-pool layout for backwards compatibility. */
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static_assert(KMemoryManager::Pool_Count == 4);
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static_assert(KMemoryManager::Pool_Unsafe == KMemoryManager::Pool_Application);
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static_assert(KMemoryManager::Pool_Secure == KMemoryManager::Pool_System);
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/* Get Secure pool size. */
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const size_t secure_pool_size = [](auto target_firmware) ALWAYS_INLINE_LAMBDA -> size_t {
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constexpr size_t LegacySecureKernelSize = 8_MB; /* KPageBuffer pages, other small kernel allocations. */
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constexpr size_t LegacySecureMiscSize = 1_MB; /* Miscellaneous pages for secure process mapping. */
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constexpr size_t LegacySecureHeapSize = 24_MB; /* Heap pages for secure process mapping (fs). */
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constexpr size_t LegacySecureEsSize = 1_MB + 232_KB; /* Size for additional secure process (es, 4.0.0+). */
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/* The baseline size for the secure region is enough to cover any allocations the kernel might make. */
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size_t size = LegacySecureKernelSize;
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/* If on 2.0.0+, initial processes will fall within the secure region. */
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if (target_firmware >= TargetFirmware_2_0_0) {
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/* Account for memory used directly for the processes. */
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size += GetInitialProcessesSecureMemorySize();
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/* Account for heap and transient memory used by the processes. */
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size += LegacySecureHeapSize + LegacySecureMiscSize;
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}
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/* If on 4.0.0+, any process may use secure memory via a create process flag. */
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/* In process this is used for es alone, and the secure pool's size should be */
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/* increased to accommodate es's binary. */
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if (target_firmware >= TargetFirmware_4_0_0) {
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size += LegacySecureEsSize;
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}
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return size;
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}(GetTargetFirmware());
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/* Calculate the overhead for the secure and (defunct) applet/non-secure-system pools. */
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size_t total_overhead_size = KMemoryManager::CalculateManagementOverheadSize(secure_pool_size);
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/* Calculate the overhead for (an amount larger than) the unsafe pool. */
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const size_t approximate_total_overhead_size = total_overhead_size + KMemoryManager::CalculateManagementOverheadSize((pool_end - pool_partitions_start) - secure_pool_size - total_overhead_size) + 2 * PageSize;
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/* Determine the start of the unsafe region. */
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const uintptr_t unsafe_memory_start = util::AlignUp(pool_partitions_start + secure_pool_size + approximate_total_overhead_size, CarveoutAlignment);
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/* Determine the start of the pool regions. */
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const uintptr_t application_pool_start = unsafe_memory_start;
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/* Determine the pool sizes. */
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const size_t application_pool_size = pool_end - application_pool_start;
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/* We want to arrange application pool depending on where the middle of dram is. */
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const uintptr_t dram_midpoint = (dram_extents.GetAddress() + dram_extents.GetEndAddress()) / 2;
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u32 cur_pool_attr = 0;
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if (dram_extents.GetEndAddress() <= dram_midpoint || dram_midpoint <= application_pool_start) {
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InsertPoolPartitionRegionIntoBothTrees(application_pool_start, application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(application_pool_size);
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} else {
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const size_t first_application_pool_size = dram_midpoint - application_pool_start;
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const size_t second_application_pool_size = application_pool_start + application_pool_size - dram_midpoint;
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InsertPoolPartitionRegionIntoBothTrees(application_pool_start, first_application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
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InsertPoolPartitionRegionIntoBothTrees(dram_midpoint, second_application_pool_size, KMemoryRegionType_DramApplicationPool, KMemoryRegionType_VirtualDramApplicationPool, cur_pool_attr);
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(first_application_pool_size);
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total_overhead_size += KMemoryManager::CalculateManagementOverheadSize(second_application_pool_size);
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}
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/* Validate the true overhead size. */
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MESOSPHERE_INIT_ABORT_UNLESS(total_overhead_size <= approximate_total_overhead_size);
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/* NOTE: Nintendo's kernel has layout [System, Management] but we have [Management, System]. This ensures the UserPool regions are contiguous. */
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/* Insert the secure pool. */
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const uintptr_t secure_pool_start = unsafe_memory_start - secure_pool_size;
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InsertPoolPartitionRegionIntoBothTrees(secure_pool_start, secure_pool_size, KMemoryRegionType_DramSystemPool, KMemoryRegionType_VirtualDramSystemPool, cur_pool_attr);
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/* Insert the pool management region. */
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const uintptr_t pool_management_start = pool_partitions_start;
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const size_t pool_management_size = secure_pool_start - pool_management_start;
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MESOSPHERE_INIT_ABORT_UNLESS(total_overhead_size <= pool_management_size);
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u32 pool_management_attr = 0;
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InsertPoolPartitionRegionIntoBothTrees(pool_management_start, pool_management_size, KMemoryRegionType_DramPoolManagement, KMemoryRegionType_VirtualDramPoolManagement, pool_management_attr);
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}
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}
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}
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}
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