exo2: rename exosphere2 -> exosphere

exosphere/program/source/secmon_user_power_management.cpp

@@ -0,0 +1,95 @@
+/*
+ * 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 <exosphere.hpp>
+#include "secmon_page_mapper.hpp"
+#include "secmon_user_power_management.hpp"
+
+#include "rebootstub_bin.h"
+
+namespace ams::secmon {
+
+    namespace {
+
+        constexpr inline const uintptr_t PMC = MemoryRegionVirtualDevicePmc.GetAddress();
+
+        constexpr inline const u32 RebootStubPhysicalAddress = MemoryRegionPhysicalIramRebootStub.GetAddress();
+
+        enum RebootStubAction {
+            RebootStubAction_ShutDown      = 0,
+            RebootStubAction_JumpToPayload = 1,
+        };
+
+        NORETURN void PerformPmcReboot() {
+            /* Write MAIN_RST. */
+            reg::Write(PMC + APBDEV_PMC_CNTRL, 0x10);
+
+            while (true) {
+                /* ... */
+            }
+        }
+
+        void LoadRebootStub(u32 action) {
+            /* Configure the bootrom to boot to warmboot payload. */
+            reg::Write(PMC + APBDEV_PMC_SCRATCH0, 0x1);
+
+            /* Patch the bootrom to perform an SVC immediately after the second spare write. */
+            reg::Write(PMC + APBDEV_PMC_SCRATCH45, 0x2E38DFFF);
+            reg::Write(PMC + APBDEV_PMC_SCRATCH46, 0x6001DC28);
+
+            /* Patch the bootrom to jump to the reboot stub we'll prepare in iram on SVC. */
+            reg::Write(PMC + APBDEV_PMC_SCRATCH33, RebootStubPhysicalAddress);
+            reg::Write(PMC + APBDEV_PMC_SCRATCH40, 0x6000F208);
+
+            {
+                /* Map the iram page. */
+                AtmosphereIramPageMapper mapper(RebootStubPhysicalAddress);
+                AMS_ABORT_UNLESS(mapper.Map());
+
+                /* Copy the reboot stub. */
+                AMS_ABORT_UNLESS(mapper.CopyToMapping(RebootStubPhysicalAddress, rebootstub_bin, rebootstub_bin_size));
+
+                /* Set the reboot type. */
+                AMS_ABORT_UNLESS(mapper.CopyToMapping(RebootStubPhysicalAddress + 4, std::addressof(action), sizeof(action)));
+            }
+        }
+
+    }
+
+    void PerformUserRebootToRcm() {
+        /* Configure the bootrom to boot to rcm. */
+        reg::Write(PMC + APBDEV_PMC_SCRATCH0, 0x2);
+
+        /* Reboot. */
+        PerformPmcReboot();
+    }
+
+    void PerformUserRebootToPayload() {
+        /* Load our reboot stub to iram. */
+        LoadRebootStub(RebootStubAction_JumpToPayload);
+
+        /* Reboot. */
+        PerformPmcReboot();
+    }
+
+    void PerformUserShutDown() {
+        /* Load our reboot stub to iram. */
+        LoadRebootStub(RebootStubAction_ShutDown);
+
+        /* Reboot. */
+        PerformPmcReboot();
+    }
+
+}