ams:bpc: allow programatically setting reboot payload

libraries/libstratosphere/source/ams/ams_bpc.c

@@ -51,7 +51,7 @@ Result amsBpcRebootToFatalError(void *ctx) {
 }
 
 
-Result amsBpcSetInitialPayload(const void *src, size_t src_size) {
+Result amsBpcSetRebootPayload(const void *src, size_t src_size) {
     return serviceDispatch(&g_amsBpcSrv, 65001,
         .buffer_attrs = { SfBufferAttr_In | SfBufferAttr_HipcMapAlias },
         .buffers = { { src, src_size } },

libraries/libstratosphere/source/ams/ams_bpc.h

@@ -28,7 +28,7 @@ void amsBpcExit(void);
 Service *amsBpcGetServiceSession(void);
 
 Result amsBpcRebootToFatalError(void *ctx);
-Result amsBpcSetInitialPayload(const void *src, size_t src_size);
+Result amsBpcSetRebootPayload(const void *src, size_t src_size);
 
 #ifdef __cplusplus
 }

libraries/libstratosphere/source/ams/ams_environment.cpp

@@ -41,7 +41,7 @@ namespace ams {
     }
 
     void SetInitialRebootPayload(const void *src, size_t src_size) {
-        R_ABORT_UNLESS(amsBpcSetInitialPayload(src, src_size));
+        R_ABORT_UNLESS(amsBpcSetRebootPayload(src, src_size));
     }
 
     void WEAK_SYMBOL ExceptionHandler(FatalErrorContext *ctx) {

stratosphere/ams_mitm/source/bpc_mitm/bpc_ams_power_utils.cpp

@@ -97,7 +97,7 @@ namespace ams::mitm::bpc {
         DoRebootToPayload(ctx);
     }
 
-    void SetInitialRebootPayload(const void *payload, size_t payload_size) {
+    void SetRebootPayload(const void *payload, size_t payload_size) {
         /* Clear payload buffer */
         std::memset(g_reboot_payload, 0xCC, sizeof(g_reboot_payload));
 
@@ -107,9 +107,8 @@ namespace ams::mitm::bpc {
         /* Copy in payload. */
         std::memcpy(g_reboot_payload, payload, payload_size);
 
-        /* NOTE: Preferred reboot type will be parsed from settings later on. */
+        /* NOTE: Preferred reboot type may be overrwritten when parsed from settings during boot. */
         g_reboot_type = RebootType::ToPayload;
-
     }
 
     Result LoadRebootPayload() {

stratosphere/ams_mitm/source/bpc_mitm/bpc_ams_power_utils.hpp

@@ -24,7 +24,7 @@ namespace ams::mitm::bpc {
     void ShutdownSystem();
 
     /* Atmosphere power utilities. */
-    void SetInitialRebootPayload(const void *payload, size_t payload_size);
+    void SetRebootPayload(const void *payload, size_t payload_size);
     Result LoadRebootPayload();
     Result DetectPreferredRebootFunctionality();
     void RebootForFatalError(const ams::FatalErrorContext *ctx);

stratosphere/ams_mitm/source/bpc_mitm/bpc_ams_service.cpp

@@ -29,13 +29,15 @@ namespace ams::mitm::bpc {
         bpc::RebootForFatalError(&ctx);
     }
 
-    void AtmosphereService::SetInitialRebootPayload(const ams::sf::InBuffer &payload) {
+    void AtmosphereService::SetRebootPayload(const ams::sf::InBuffer &payload) {
+        /* Set the reboot payload. */
+        bpc::SetRebootPayload(payload.GetPointer(), payload.GetSize());
+
+        /* If this is being called for the first time (by boot sysmodule), */
+        /* Then we should kick off the rest of init. */
         if (!g_set_initial_payload) {
             g_set_initial_payload = true;
 
-            /* Set the initial reboot payload. */
-            bpc::SetInitialRebootPayload(payload.GetPointer(), payload.GetSize());
-
             /* Start the initialization process. */
             ::ams::mitm::StartInitialize();
         }

stratosphere/ams_mitm/source/bpc_mitm/bpc_ams_service.hpp

@@ -23,15 +23,15 @@ namespace ams::mitm::bpc {
         private:
             enum class CommandId {
                 RebootToFatalError = 65000,
-                SetInitialRebootPayload = 65001,
+                SetRebootPayload   = 65001,
             };
         private:
             void RebootToFatalError(const ams::FatalErrorContext &ctx);
-            void SetInitialRebootPayload(const ams::sf::InBuffer &payload);
+            void SetRebootPayload(const ams::sf::InBuffer &payload);
         public:
             DEFINE_SERVICE_DISPATCH_TABLE {
                 MAKE_SERVICE_COMMAND_META(RebootToFatalError),
-                MAKE_SERVICE_COMMAND_META(SetInitialRebootPayload),
+                MAKE_SERVICE_COMMAND_META(SetRebootPayload),
             };
     };