forked from suyu/suyu
4569f39c7c
Removes common_sizes.h in favor of having `_KiB`, `_MiB`, `_GiB`, etc user-literals within literals.h. To keep the global namespace clean, users will have to use: ``` using namespace Common::Literals; ``` to access these literals.
167 lines
4.9 KiB
C++
167 lines
4.9 KiB
C++
// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <random>
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#include "common/literals.h"
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#include "core/hle/kernel/board/nintendo/nx/k_system_control.h"
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#include "core/hle/kernel/board/nintendo/nx/secure_monitor.h"
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#include "core/hle/kernel/k_trace.h"
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namespace Kernel::Board::Nintendo::Nx {
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namespace impl {
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constexpr const std::size_t RequiredNonSecureSystemMemorySizeVi = 0x2238 * 4 * 1024;
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constexpr const std::size_t RequiredNonSecureSystemMemorySizeNvservices = 0x710 * 4 * 1024;
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constexpr const std::size_t RequiredNonSecureSystemMemorySizeMisc = 0x80 * 4 * 1024;
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} // namespace impl
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constexpr const std::size_t RequiredNonSecureSystemMemorySize =
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impl::RequiredNonSecureSystemMemorySizeVi + impl::RequiredNonSecureSystemMemorySizeNvservices +
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impl::RequiredNonSecureSystemMemorySizeMisc;
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namespace {
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using namespace Common::Literals;
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u32 GetMemoryModeForInit() {
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return 0x01;
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}
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u32 GetMemorySizeForInit() {
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return 0;
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}
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Smc::MemoryArrangement GetMemoryArrangeForInit() {
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switch (GetMemoryModeForInit() & 0x3F) {
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case 0x01:
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default:
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return Smc::MemoryArrangement_4GB;
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case 0x02:
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return Smc::MemoryArrangement_4GBForAppletDev;
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case 0x03:
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return Smc::MemoryArrangement_4GBForSystemDev;
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case 0x11:
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return Smc::MemoryArrangement_6GB;
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case 0x12:
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return Smc::MemoryArrangement_6GBForAppletDev;
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case 0x21:
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return Smc::MemoryArrangement_8GB;
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}
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}
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} // namespace
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// Initialization.
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size_t KSystemControl::Init::GetIntendedMemorySize() {
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switch (GetMemorySizeForInit()) {
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case Smc::MemorySize_4GB:
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default: // All invalid modes should go to 4GB.
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return 4_GiB;
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case Smc::MemorySize_6GB:
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return 6_GiB;
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case Smc::MemorySize_8GB:
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return 8_GiB;
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}
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}
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PAddr KSystemControl::Init::GetKernelPhysicalBaseAddress(u64 base_address) {
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return base_address;
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}
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bool KSystemControl::Init::ShouldIncreaseThreadResourceLimit() {
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return true;
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}
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std::size_t KSystemControl::Init::GetApplicationPoolSize() {
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// Get the base pool size.
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const size_t base_pool_size = []() -> size_t {
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switch (GetMemoryArrangeForInit()) {
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case Smc::MemoryArrangement_4GB:
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default:
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return 3285_MiB;
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case Smc::MemoryArrangement_4GBForAppletDev:
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return 2048_MiB;
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case Smc::MemoryArrangement_4GBForSystemDev:
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return 3285_MiB;
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case Smc::MemoryArrangement_6GB:
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return 4916_MiB;
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case Smc::MemoryArrangement_6GBForAppletDev:
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return 3285_MiB;
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case Smc::MemoryArrangement_8GB:
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return 4916_MiB;
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}
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}();
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// Return (possibly) adjusted size.
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return base_pool_size;
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}
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size_t KSystemControl::Init::GetAppletPoolSize() {
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// Get the base pool size.
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const size_t base_pool_size = []() -> size_t {
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switch (GetMemoryArrangeForInit()) {
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case Smc::MemoryArrangement_4GB:
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default:
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return 507_MiB;
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case Smc::MemoryArrangement_4GBForAppletDev:
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return 1554_MiB;
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case Smc::MemoryArrangement_4GBForSystemDev:
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return 448_MiB;
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case Smc::MemoryArrangement_6GB:
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return 562_MiB;
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case Smc::MemoryArrangement_6GBForAppletDev:
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return 2193_MiB;
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case Smc::MemoryArrangement_8GB:
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return 2193_MiB;
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}
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}();
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// Return (possibly) adjusted size.
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constexpr size_t ExtraSystemMemoryForAtmosphere = 33_MiB;
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return base_pool_size - ExtraSystemMemoryForAtmosphere - KTraceBufferSize;
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}
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size_t KSystemControl::Init::GetMinimumNonSecureSystemPoolSize() {
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// Verify that our minimum is at least as large as Nintendo's.
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constexpr size_t MinimumSize = RequiredNonSecureSystemMemorySize;
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static_assert(MinimumSize >= 0x29C8000);
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return MinimumSize;
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}
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namespace {
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template <typename F>
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u64 GenerateUniformRange(u64 min, u64 max, F f) {
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// Handle the case where the difference is too large to represent.
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if (max == std::numeric_limits<u64>::max() && min == std::numeric_limits<u64>::min()) {
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return f();
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}
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// Iterate until we get a value in range.
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const u64 range_size = ((max + 1) - min);
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const u64 effective_max = (std::numeric_limits<u64>::max() / range_size) * range_size;
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while (true) {
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if (const u64 rnd = f(); rnd < effective_max) {
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return min + (rnd % range_size);
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}
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}
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}
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} // Anonymous namespace
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u64 KSystemControl::GenerateRandomU64() {
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static std::random_device device;
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static std::mt19937 gen(device());
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static std::uniform_int_distribution<u64> distribution(1, std::numeric_limits<u64>::max());
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return distribution(gen);
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}
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u64 KSystemControl::GenerateRandomRange(u64 min, u64 max) {
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return GenerateUniformRange(min, max, GenerateRandomU64);
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}
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} // namespace Kernel::Board::Nintendo::Nx
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