pm: actually implement GetBootFinishedEvent

stratosphere/pm/source/pm_registration.cpp

@@ -35,6 +35,7 @@ static std::atomic<u64> g_debug_on_launch_tid(0);
 static IEvent *g_process_event = nullptr;
 static IEvent *g_debug_title_event = nullptr;
 static IEvent *g_debug_application_event = nullptr;
+static IEvent *g_boot_finished_event = nullptr;
 
 static u8 g_ac_buf[4 * sizeof(LoaderProgramInfo)];
 
@@ -46,6 +47,7 @@ void Registration::InitializeSystemResources() {
     g_process_event = CreateWriteOnlySystemEvent();
     g_debug_title_event = CreateWriteOnlySystemEvent();
     g_debug_application_event = CreateWriteOnlySystemEvent();
+    g_boot_finished_event = CreateWriteOnlySystemEvent();
 
     /* Auto-clear non-system event. */
     g_process_launch_start_event = CreateHosEvent(&Registration::ProcessLaunchStartCallback);
@@ -501,3 +503,19 @@ Result Registration::DisableDebug(u32 which) {
     }
     return ResultSuccess;
 }
+
+Handle Registration::GetDebugTitleEventHandle() {
+    return g_debug_title_event->GetHandle();
+}
+
+Handle Registration::GetDebugApplicationEventHandle() {
+    return g_debug_application_event->GetHandle();
+}
+
+Handle Registration::GetBootFinishedEventHandle() {
+    return g_boot_finished_event->GetHandle();
+}
+
+void Registration::SignalBootFinished() {
+    g_boot_finished_event->Signal();
+}

stratosphere/pm/source/pm_registration.hpp

@@ -193,6 +193,7 @@ class Registration {
         static Result DisableDebug(u32 which);
         static Handle GetDebugTitleEventHandle();
         static Handle GetDebugApplicationEventHandle();
+        static Handle GetBootFinishedEventHandle();
 
         static void HandleProcessLaunch();
         static Result LaunchDebugProcess(u64 pid);
@@ -200,6 +201,8 @@ class Registration {
         static Result LaunchProcess(u64 title_id, FsStorageId storage_id, u64 launch_flags, u64 *out_pid);
         static Result LaunchProcessByTidSid(TidSid tid_sid, u64 launch_flags, u64 *out_pid);
 
+        static void SignalBootFinished();
+
         static bool HasApplicationProcess(std::shared_ptr<Process> *out);
 };
 

stratosphere/pm/source/pm_shell.cpp

@@ -86,6 +86,7 @@ Result ShellService::ClearProcessNotificationFlag(u64 pid) {
 void ShellService::NotifyBootFinished() {
     if (!g_has_boot_finished) {
         g_has_boot_finished = true;
+        Registration::SignalBootFinished();
         EmbeddedBoot2::Main();
     }
 }
@@ -113,13 +114,15 @@ Result ShellService::BoostSystemThreadsResourceLimit() {
 }
 
 
-Result ShellService::GetUnimplementedEventHandle(Out<CopiedHandle> event) {
-    /* In 8.0.0, Nintendo added this command which should return an event handle. */
-    /* In addition, they also added code to create a new event in the global PM constructor. */
-    /* However, nothing signals this event, and this command currently does std::abort();. */
-    /* We will oblige. */
-    std::abort();
-    
-    /* TODO: Return an event handle, once N makes this command a real thing in the future. */
-    /* TODO: return ResultSuccess; */
+void ShellService::GetBootFinishedEvent(Out<CopiedHandle> event) {
+    /* In 8.0.0, Nintendo added this command, which signals that the boot sysmodule has finished. */
+    /* Nintendo only signals it in safe mode FIRM, and this function aborts on normal FIRM. */
+    /* We will signal it always, but only allow this function to succeed on safe mode. */
+    {
+        u64 is_recovery_boot = 0;
+        if (R_FAILED(SmcGetConfig(SplConfigItem_IsRecoveryBoot, &is_recovery_boot)) || !is_recovery_boot) {
+            std::abort();
+        }
+    }
+    event.SetValue(Registration::GetBootFinishedEventHandle());
 }

stratosphere/pm/source/pm_shell.hpp

@@ -44,7 +44,7 @@ enum ShellCmd_5X {
     Shell_Cmd_5X_BoostSystemMemoryResourceLimit = 7,
 
     Shell_Cmd_BoostSystemThreadsResourceLimit = 8,
-    Shell_Cmd_GetUnimplementedEventHandle = 9 /* TODO: Rename when Nintendo implements this. */
+    Shell_Cmd_GetBootFinishedEvent = 9,
 };
 
 class ShellService final : public IServiceObject {
@@ -61,7 +61,7 @@ class ShellService final : public IServiceObject {
         Result GetApplicationProcessId(Out<u64> pid);
         Result BoostSystemMemoryResourceLimit(u64 sysmem_size);
         Result BoostSystemThreadsResourceLimit();
-        Result GetUnimplementedEventHandle(Out<CopiedHandle> event);
+        void GetBootFinishedEvent(Out<CopiedHandle> event);
     public:
         DEFINE_SERVICE_DISPATCH_TABLE {
             /* 1.0.0-4.0.0 */
@@ -92,6 +92,6 @@ class ShellService final : public IServiceObject {
             MakeServiceCommandMeta<Shell_Cmd_BoostSystemThreadsResourceLimit, &ShellService::BoostSystemThreadsResourceLimit, FirmwareVersion_700>(),
 
             /* 8.0.0-* */
-            MakeServiceCommandMeta<Shell_Cmd_GetUnimplementedEventHandle, &ShellService::GetUnimplementedEventHandle, FirmwareVersion_800>(),
+            MakeServiceCommandMeta<Shell_Cmd_GetBootFinishedEvent, &ShellService::GetBootFinishedEvent, FirmwareVersion_800>(),
         };
 };