boot: implement pmc wake config init (todo: events)

stratosphere/boot/source/boot_main.cpp

@@ -107,8 +107,6 @@ int main(int argc, char **argv)
 {
     consoleDebugInit(debugDevice_SVC);
 
-    /* TODO: Implement the boot sysmodule -- boot_old to be broadly rewritten. */
-
     /* Change voltage from 3.3v to 1.8v for select devices. */
     Boot::ChangeGpioVoltageTo1_8v();
 
@@ -133,7 +131,8 @@ int main(int argc, char **argv)
     /* Configure pinmux + drive pads. */
     Boot::ConfigurePinmux();
 
-    /* TODO: SetInitialWakePinConfiguration(); */
+    /* Configure the PMC wake pin settings. */
+    Boot::SetInitialWakePinConfiguration();
 
     if (hw_type != HardwareType_Copper) {
         Boot::SetInitialClockConfiguration();

stratosphere/boot/source/boot_registers_pmc.hpp

@@ -24,8 +24,10 @@ static constexpr uintptr_t PmcBase = 0x7000E400ul;
 static constexpr size_t APBDEV_PMC_CNTRL = 0x0;
 static constexpr u32 PMC_CNTRL_MAIN_RST = (1 << 4);
 static constexpr size_t APBDEV_PMC_SEC_DISABLE = 0x4;
+static constexpr size_t APBDEV_PMC_DPD_PADS_ORIDE = 0x1C;
 static constexpr size_t APBDEV_PMC_PWRGATE_TOGGLE = 0x30;
 static constexpr size_t APBDEV_PMC_PWRGATE_STATUS = 0x38;
+static constexpr size_t APBDEV_PMC_BLINK_TIMER = 0x40;
 static constexpr size_t APBDEV_PMC_NO_IOPOWER = 0x44;
 static constexpr size_t APBDEV_PMC_SCRATCH0 = 0x50;
 static constexpr size_t APBDEV_PMC_SCRATCH1 = 0x54;
@@ -61,6 +63,7 @@ static constexpr size_t APBDEV_PMC_IO_DPD3_REQ = 0x45C;
 static constexpr size_t APBDEV_PMC_IO_DPD4_REQ = 0x464;
 static constexpr size_t APBDEV_PMC_UTMIP_PAD_CFG1 = 0x4C4;
 static constexpr size_t APBDEV_PMC_UTMIP_PAD_CFG3 = 0x4CC;
+static constexpr size_t APBDEV_PMC_WAKE_DEBOUNCE_EN = 0x4D8;
 static constexpr size_t APBDEV_PMC_DDR_CNTRL = 0x4E4;
 static constexpr size_t APBDEV_PMC_SEC_DISABLE4 = 0x5B0;
 static constexpr size_t APBDEV_PMC_SEC_DISABLE5 = 0x5B4;

stratosphere/boot/source/boot_wake_control_configs.hpp

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2018-2019 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/>.
+ */
+
+#pragma once
+#include <switch.h>
+
+#include "boot_types.hpp"
+#include "boot_registers_pmc.hpp"
+
+struct WakeControlConfig {
+    u32 reg_offset;
+    u32 mask_val;
+    bool flag_val;
+};
+
+static constexpr WakeControlConfig WakeControlConfigs[] = {
+    {APBDEV_PMC_CNTRL, 0x0800, true},
+    {APBDEV_PMC_CNTRL, 0x0400, false},
+    {APBDEV_PMC_CNTRL, 0x0200, true},
+    {APBDEV_PMC_CNTRL, 0x0100, false},
+    {APBDEV_PMC_CNTRL, 0x0040, false},
+    {APBDEV_PMC_CNTRL, 0x0020, false},
+    {APBDEV_PMC_CNTRL2, 0x4000, true},
+    {APBDEV_PMC_CNTRL2, 0x0200, false},
+    {APBDEV_PMC_CNTRL2, 0x0001, true},
+};
+
+static constexpr size_t NumWakeControlConfigs = sizeof(WakeControlConfigs) / sizeof(WakeControlConfigs[0]);

stratosphere/boot/source/boot_wake_pins.cpp

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2018-2019 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 "boot_functions.hpp"
+#include "boot_registers_pmc.hpp"
+#include "boot_wake_control_configs.hpp"
+
+static void UpdatePmcControlBit(const u32 reg_offset, const u32 mask_val, const bool flag) {
+    Boot::WritePmcRegister(PmcBase + reg_offset, flag ? UINT32_MAX : 0, mask_val);
+    Boot::ReadPmcRegister(PmcBase + reg_offset);
+}
+
+static void InitializePmcWakeConfiguration(const bool is_blink) {
+    /* Initialize APBDEV_PMC_WAKE_DEBOUNCE_EN, do a dummy read. */
+    Boot::WritePmcRegister(PmcBase + APBDEV_PMC_WAKE_DEBOUNCE_EN, 0);
+    Boot::ReadPmcRegister(PmcBase + APBDEV_PMC_WAKE_DEBOUNCE_EN);
+
+    /* Initialize APBDEV_PMC_BLINK_TIMER, do a dummy read. */
+    Boot::WritePmcRegister(PmcBase + APBDEV_PMC_BLINK_TIMER, 0x8008800);
+    Boot::ReadPmcRegister(PmcBase + APBDEV_PMC_BLINK_TIMER);
+
+    /* Set control bits, do dummy reads. */
+    for (size_t i = 0; i < NumWakeControlConfigs; i++) {
+        UpdatePmcControlBit(WakeControlConfigs[i].reg_offset, WakeControlConfigs[i].mask_val, WakeControlConfigs[i].flag_val);
+    }
+
+    /* Set bit 0x80 in APBDEV_PMC_CNTRL based on is_blink, do dummy read. */
+    UpdatePmcControlBit(APBDEV_PMC_CNTRL, 0x80, is_blink);
+
+    /* Set bit 0x100000 in APBDEV_PMC_DPD_PADS_ORIDE based on is_blink, do dummy read. */
+    UpdatePmcControlBit(APBDEV_PMC_DPD_PADS_ORIDE, 0x100000, is_blink);
+}
+
+void Boot::SetInitialWakePinConfiguration() {
+    InitializePmcWakeConfiguration(false);
+
+    /* TODO: Wake event levels, wake event enables. */
+}