service/apt: Add and implement more service commands. (#6721)

* service/apt: Add and implement more service commands.

* service/apt: Implement power button.

* Address review comments and fix GetApplicationRunningMode bug.

src/core/hle/kernel/kernel.h

@@ -97,11 +97,44 @@ union CoreVersion {
     BitField<24, 8, u32> major;
 };
 
+/// Common memory memory modes.
+enum class MemoryMode : u8 {
+    Prod = 0, ///< 64MB app memory
+    Dev1 = 2, ///< 96MB app memory
+    Dev2 = 3, ///< 80MB app memory
+    Dev3 = 4, ///< 72MB app memory
+    Dev4 = 5, ///< 32MB app memory
+};
+
+/// New 3DS memory modes.
+enum class New3dsMemoryMode : u8 {
+    Legacy = 0,  ///< Use Old 3DS system mode.
+    NewProd = 1, ///< 124MB app memory
+    NewDev1 = 2, ///< 178MB app memory
+    NewDev2 = 3, ///< 124MB app memory
+};
+
+/// Structure containing N3DS hardware capability flags.
+struct New3dsHwCapabilities {
+    bool enable_l2_cache;         ///< Whether extra L2 cache should be enabled.
+    bool enable_804MHz_cpu;       ///< Whether the CPU should run at 804MHz.
+    New3dsMemoryMode memory_mode; ///< The New 3DS memory mode.
+
+private:
+    template <class Archive>
+    void serialize(Archive& ar, const unsigned int) {
+        ar& enable_l2_cache;
+        ar& enable_804MHz_cpu;
+        ar& memory_mode;
+    }
+    friend class boost::serialization::access;
+};
+
 class KernelSystem {
 public:
     explicit KernelSystem(Memory::MemorySystem& memory, Core::Timing& timing,
-                          std::function<void()> prepare_reschedule_callback, u32 system_mode,
-                          u32 num_cores, u8 n3ds_mode);
+                          std::function<void()> prepare_reschedule_callback, MemoryMode memory_mode,
+                          u32 num_cores, const New3dsHwCapabilities& n3ds_hw_caps);
     ~KernelSystem();
 
     using PortPair = std::pair<std::shared_ptr<ServerPort>, std::shared_ptr<ClientPort>>;
@@ -279,6 +312,14 @@ public:
 
     void ResetThreadIDs();
 
+    MemoryMode GetMemoryMode() const {
+        return memory_mode;
+    }
+
+    const New3dsHwCapabilities& GetNew3dsHwCapabilities() const {
+        return n3ds_hw_caps;
+    }
+
     /// Map of named ports managed by the kernel, which can be retrieved using the ConnectToPort
     std::unordered_map<std::string, std::shared_ptr<ClientPort>> named_ports;
 
@@ -289,7 +330,7 @@ public:
     Core::Timing& timing;
 
 private:
-    void MemoryInit(u32 mem_type, u8 n3ds_mode);
+    void MemoryInit(MemoryMode memory_mode, New3dsMemoryMode n3ds_mode);
 
     std::function<void()> prepare_reschedule_callback;
 
@@ -324,6 +365,9 @@ private:
 
     u32 next_thread_id;
 
+    MemoryMode memory_mode;
+    New3dsHwCapabilities n3ds_hw_caps;
+
     friend class boost::serialization::access;
     template <class Archive>
     void serialize(Archive& ar, const unsigned int file_version);