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https://github.com/Atmosphere-NX/Atmosphere
synced 2025-01-11 15:24:46 +00:00
boot: Implement DetectBootReason
This commit is contained in:
parent
fe0d41623c
commit
93fb060fac
9 changed files with 317 additions and 2 deletions
113
stratosphere/boot/source/boot_boot_reason.cpp
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113
stratosphere/boot/source/boot_boot_reason.cpp
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@ -0,0 +1,113 @@
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/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "boot_functions.hpp"
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#include "boot_pmic_driver.hpp"
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#include "boot_rtc_driver.hpp"
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static u32 g_boot_reason = 0;
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static bool g_detected_boot_reason = false;
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struct BootReasonValue {
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union {
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struct {
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u8 power_intr;
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u8 rtc_intr;
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u8 nv_erc;
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u8 boot_reason;
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};
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u32 value;
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};
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};
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static u32 MakeBootReason(u32 power_intr, u8 rtc_intr, u8 nv_erc, bool ac_ok) {
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if (power_intr & 0x08) {
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return 2;
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}
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if (rtc_intr & 0x02) {
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return 3;
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}
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if (power_intr & 0x80) {
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return 1;
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}
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if (rtc_intr & 0x04) {
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if (nv_erc != 0x80 && !Boot::IsRecoveryBoot()) {
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return 4;
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}
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}
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if ((nv_erc & 0x40) && ac_ok) {
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return 1;
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}
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return 0;
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}
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void Boot::DetectBootReason() {
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u8 power_intr;
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u8 rtc_intr;
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u8 rtc_intr_m;
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u8 nv_erc;
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bool ac_ok;
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/* Get values from PMIC. */
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{
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PmicDriver pmic_driver;
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if (R_FAILED(pmic_driver.GetPowerIntr(&power_intr))) {
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std::abort();
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}
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if (R_FAILED(pmic_driver.GetNvErc(&nv_erc))) {
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std::abort();
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}
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if (R_FAILED(pmic_driver.GetAcOk(&ac_ok))) {
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std::abort();
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}
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}
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/* Get values from RTC. */
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{
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RtcDriver rtc_driver;
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if (R_FAILED(rtc_driver.GetRtcIntr(&rtc_intr))) {
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std::abort();
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}
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if (R_FAILED(rtc_driver.GetRtcIntrM(&rtc_intr_m))) {
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std::abort();
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}
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}
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/* Set global derived boot reason. */
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g_boot_reason = MakeBootReason(power_intr, rtc_intr & ~rtc_intr_m, nv_erc, ac_ok);
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/* Set boot reason for SPL. */
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{
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BootReasonValue boot_reason_value;
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boot_reason_value.power_intr = power_intr;
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boot_reason_value.rtc_intr = rtc_intr & ~rtc_intr_m;
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boot_reason_value.nv_erc = nv_erc;
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boot_reason_value.boot_reason = g_boot_reason;
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if (R_FAILED(splSetBootReason(boot_reason_value.value))) {
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std::abort();
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}
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}
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g_detected_boot_reason = true;
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}
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u32 Boot::GetBootReason() {
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if (!g_detected_boot_reason) {
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std::abort();
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}
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return g_boot_reason;
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}
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@ -29,6 +29,7 @@ class Boot {
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static void ChangeGpioVoltageTo1_8v();
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static void SetInitialGpioConfiguration();
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static void CheckClock();
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static void DetectBootReason();
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/* Power utilities. */
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static void RebootSystem();
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@ -45,6 +46,8 @@ class Boot {
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/* SPL Utilities. */
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static HardwareType GetHardwareType();
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static u32 GetBootReason();
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static bool IsRecoveryBoot();
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/* I2C Utilities. */
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static Result ReadI2cRegister(I2cSessionImpl &session, u8 *dst, size_t dst_size, const u8 *cmd, size_t cmd_size);
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@ -119,7 +119,8 @@ int main(int argc, char **argv)
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/* Check USB PLL/UTMIP clock. */
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Boot::CheckClock();
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/* TODO: DetectBootReason(); */
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/* Talk to PMIC/RTC, set boot reason with SPL. */
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Boot::DetectBootReason();
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/* TODO: ShowSplashScreen(); */
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63
stratosphere/boot/source/boot_pmic_driver.cpp
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63
stratosphere/boot/source/boot_pmic_driver.cpp
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@ -0,0 +1,63 @@
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/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <switch.h>
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#include <stratosphere.hpp>
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#include "boot_functions.hpp"
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#include "boot_pmic_driver.hpp"
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void PmicDriver::ShutdownSystem() {
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if (R_FAILED(this->ShutdownSystem(false))) {
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std::abort();
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}
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}
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void PmicDriver::RebootSystem() {
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if (R_FAILED(this->ShutdownSystem(true))) {
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std::abort();
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}
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}
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Result PmicDriver::GetAcOk(bool *out) {
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u8 power_status;
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Result rc = this->GetPowerStatus(&power_status);
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if (R_FAILED(rc)) {
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return rc;
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}
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*out = (power_status & 0x02) != 0;
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return ResultSuccess;
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}
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Result PmicDriver::GetPowerIntr(u8 *out) {
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const u8 addr = 0x0B;
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return Boot::ReadI2cRegister(this->i2c_session, out, sizeof(*out), &addr, sizeof(addr));
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}
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Result PmicDriver::GetPowerStatus(u8 *out) {
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const u8 addr = 0x15;
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return Boot::ReadI2cRegister(this->i2c_session, out, sizeof(*out), &addr, sizeof(addr));
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}
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Result PmicDriver::GetNvErc(u8 *out) {
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const u8 addr = 0x0C;
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return Boot::ReadI2cRegister(this->i2c_session, out, sizeof(*out), &addr, sizeof(addr));
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}
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Result PmicDriver::ShutdownSystem(bool reboot) {
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/* TODO: Implement this. */
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std::abort();
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}
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45
stratosphere/boot/source/boot_pmic_driver.hpp
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45
stratosphere/boot/source/boot_pmic_driver.hpp
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/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <switch.h>
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#include <stratosphere.hpp>
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#include "i2c_driver/i2c_api.hpp"
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class PmicDriver {
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private:
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I2cSessionImpl i2c_session;
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public:
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PmicDriver() {
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I2cDriver::Initialize();
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I2cDriver::OpenSession(&this->i2c_session, I2cDevice_Max77620Pmic);
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}
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~PmicDriver() {
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I2cDriver::CloseSession(this->i2c_session);
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I2cDriver::Finalize();
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}
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private:
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Result GetPowerStatus(u8 *out);
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Result ShutdownSystem(bool reboot);
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public:
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void ShutdownSystem();
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void RebootSystem();
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Result GetAcOk(bool *out);
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Result GetPowerIntr(u8 *out);
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Result GetNvErc(u8 *out);
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};
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41
stratosphere/boot/source/boot_rtc_driver.cpp
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41
stratosphere/boot/source/boot_rtc_driver.cpp
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/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <switch.h>
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#include <stratosphere.hpp>
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#include "boot_functions.hpp"
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#include "boot_rtc_driver.hpp"
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Result RtcDriver::ReadRtcRegister(u8 *out, u8 address) {
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const u8 update_addr = 0x04;
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const u8 update_val = 0x10;
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Result rc = Boot::WriteI2cRegister(this->i2c_session, &update_val, sizeof(update_val), &update_addr, sizeof(update_addr));
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if (R_FAILED(rc)) {
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return rc;
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}
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svcSleepThread(16'000'000ul);
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return Boot::ReadI2cRegister(this->i2c_session, out, sizeof(*out), &address, sizeof(address));
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}
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Result RtcDriver::GetRtcIntr(u8 *out) {
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const u8 addr = 0x00;
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return Boot::ReadI2cRegister(this->i2c_session, out, sizeof(*out), &addr, sizeof(addr));
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}
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Result RtcDriver::GetRtcIntrM(u8 *out) {
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const u8 addr = 0x01;
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return this->ReadRtcRegister(out, addr);
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}
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41
stratosphere/boot/source/boot_rtc_driver.hpp
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41
stratosphere/boot/source/boot_rtc_driver.hpp
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/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <switch.h>
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#include <stratosphere.hpp>
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#include "i2c_driver/i2c_api.hpp"
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class RtcDriver {
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private:
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I2cSessionImpl i2c_session;
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public:
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RtcDriver() {
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I2cDriver::Initialize();
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I2cDriver::OpenSession(&this->i2c_session, I2cDevice_Max77620Rtc);
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}
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~RtcDriver() {
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I2cDriver::CloseSession(this->i2c_session);
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I2cDriver::Finalize();
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}
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private:
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Result ReadRtcRegister(u8 *out, u8 address);
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public:
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Result GetRtcIntr(u8 *out);
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Result GetRtcIntrM(u8 *out);
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};
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@ -23,3 +23,11 @@ HardwareType Boot::GetHardwareType() {
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}
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return static_cast<HardwareType>(out_val);
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}
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bool Boot::IsRecoveryBoot() {
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u64 val = 0;
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if (R_FAILED(splGetConfig(SplConfigItem_IsRecoveryBoot, &val))) {
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std::abort();
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}
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return val != 0;
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}
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@ -65,7 +65,7 @@ struct AsyncOperationKey {
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struct BootReasonValue {
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u8 power_intr;
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u8 rtc_intr;
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u8 _0x3;
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u8 nv_erc;
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u8 boot_reason;
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};
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static_assert(sizeof(BootReasonValue) == sizeof(u32), "BootReasonValue definition!");
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