reboot_to_payload: Use ams:bpc API to set payload, reboot safely and prevent usage on Mariko (#1543)

troposphere/reboot_to_payload/source/ams_bpc.c

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <switch.h>
+#include <string.h>
+#include "ams_bpc.h"
+#include "service_guard.h"
+
+static Service g_amsBpcSrv;
+
+NX_GENERATE_SERVICE_GUARD(amsBpc);
+
+Result _amsBpcInitialize(void) {
+    Handle h;
+    Result rc = svcConnectToNamedPort(&h, "bpc:ams"); /* TODO: ams:bpc */
+    if (R_SUCCEEDED(rc)) serviceCreate(&g_amsBpcSrv, h);
+    return rc;
+}
+
+void _amsBpcCleanup(void) {
+    serviceClose(&g_amsBpcSrv);
+}
+
+Service *amsBpcGetServiceSession(void) {
+    return &g_amsBpcSrv;
+}
+
+Result amsBpcSetRebootPayload(const void *src, size_t src_size) {
+    return serviceDispatch(&g_amsBpcSrv, 65001,
+        .buffer_attrs = { SfBufferAttr_In | SfBufferAttr_HipcMapAlias },
+        .buffers = { { src, src_size } },
+    );
+}