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// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/common_types.h"
#include "core/device_memory.h"
namespace Kernel::Memory {
constexpr std::size_t KernelAslrAlignment = 2 * 1024 * 1024;
constexpr std::size_t KernelVirtualAddressSpaceWidth = 1ULL << 39;
constexpr std::size_t KernelPhysicalAddressSpaceWidth = 1ULL << 48;
constexpr std::size_t KernelVirtualAddressSpaceBase = 0ULL - KernelVirtualAddressSpaceWidth;
constexpr std::size_t KernelVirtualAddressSpaceEnd =
KernelVirtualAddressSpaceBase + (KernelVirtualAddressSpaceWidth - KernelAslrAlignment);
constexpr std::size_t KernelVirtualAddressSpaceLast = KernelVirtualAddressSpaceEnd - 1;
constexpr std::size_t KernelVirtualAddressSpaceSize =
KernelVirtualAddressSpaceEnd - KernelVirtualAddressSpaceBase;
constexpr bool IsKernelAddressKey(VAddr key) {
return KernelVirtualAddressSpaceBase <= key && key <= KernelVirtualAddressSpaceLast;
}
constexpr bool IsKernelAddress(VAddr address) {
return KernelVirtualAddressSpaceBase <= address && address < KernelVirtualAddressSpaceEnd;
}
class MemoryRegion final {
friend class MemoryLayout;
public:
constexpr PAddr StartAddress() const {
return start_address;
}
constexpr PAddr EndAddress() const {
return end_address;
}
private:
constexpr MemoryRegion() = default;
constexpr MemoryRegion(PAddr start_address, PAddr end_address)
: start_address{start_address}, end_address{end_address} {}
const PAddr start_address{};
const PAddr end_address{};
};
class MemoryLayout final {
public:
constexpr const MemoryRegion& Application() const {
return application;
}
constexpr const MemoryRegion& Applet() const {
return applet;
}
constexpr const MemoryRegion& System() const {
return system;
}
static constexpr MemoryLayout GetDefaultLayout() {
constexpr std::size_t application_size{0xcd500000};
constexpr std::size_t applet_size{0x1fb00000};
constexpr PAddr application_start_address{Core::DramMemoryMap::End - application_size};
constexpr PAddr application_end_address{Core::DramMemoryMap::End};
constexpr PAddr applet_start_address{application_start_address - applet_size};
constexpr PAddr applet_end_address{applet_start_address + applet_size};
constexpr PAddr system_start_address{Core::DramMemoryMap::SlabHeapEnd};
constexpr PAddr system_end_address{applet_start_address};
return {application_start_address, application_end_address, applet_start_address,
applet_end_address, system_start_address, system_end_address};
}
private:
constexpr MemoryLayout(PAddr application_start_address, std::size_t application_size,
PAddr applet_start_address, std::size_t applet_size,
PAddr system_start_address, std::size_t system_size)
: application{application_start_address, application_size},
applet{applet_start_address, applet_size}, system{system_start_address, system_size} {}
const MemoryRegion application;
const MemoryRegion applet;
const MemoryRegion system;
};
} // namespace Kernel::Memory
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