/* * Copyright (c) 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 <stratosphere.hpp> #include "boot_boot_reason.hpp" #include "boot_pmic_driver.hpp" #include "boot_rtc_driver.hpp" namespace ams::boot { namespace { /* Globals. */ constinit spl::BootReason g_boot_reason = spl::BootReason_Unknown; constinit bool g_detected_boot_reason = false; /* Helpers. */ spl::BootReason DetectBootReason(u32 power_intr, u8 rtc_intr, u8 nv_erc, bool ac_ok) { if (power_intr & 0x08) { return spl::BootReason_OnKey; } if (rtc_intr & 0x02) { return spl::BootReason_RtcAlarm1; } if (power_intr & 0x80) { return spl::BootReason_AcOk; } if (rtc_intr & 0x04) { if (nv_erc != 0x80 && !spl::IsRecoveryBoot()) { return spl::BootReason_RtcAlarm2; } } if ((nv_erc & 0x40) && ac_ok) { return spl::BootReason_AcOk; } return spl::BootReason_Unknown; } } void DetectBootReason() { u8 power_intr; u8 rtc_intr; u8 rtc_intr_m; u8 nv_erc; bool ac_ok; /* Get values from PMIC. */ { PmicDriver pmic_driver; R_ABORT_UNLESS(pmic_driver.GetOnOffIrq(std::addressof(power_intr))); R_ABORT_UNLESS(pmic_driver.GetNvErc(std::addressof(nv_erc))); R_ABORT_UNLESS(pmic_driver.GetAcOk(std::addressof(ac_ok))); } /* Get values from RTC. */ { RtcDriver rtc_driver; R_ABORT_UNLESS(rtc_driver.GetRtcIntr(std::addressof(rtc_intr))); R_ABORT_UNLESS(rtc_driver.GetRtcIntrM(std::addressof(rtc_intr_m))); } /* Set global derived boot reason. */ g_boot_reason = DetectBootReason(power_intr, rtc_intr & ~rtc_intr_m, nv_erc, ac_ok); /* Set boot reason for SPL. */ if (hos::GetVersion() >= hos::Version_3_0_0) { /* Create the boot reason value. */ spl::BootReasonValue boot_reason_value = {}; boot_reason_value.power_intr = power_intr; boot_reason_value.rtc_intr = rtc_intr & ~rtc_intr_m; boot_reason_value.nv_erc = nv_erc; boot_reason_value.boot_reason = g_boot_reason; /* Set the boot reason value. */ R_ABORT_UNLESS(spl::SetBootReason(boot_reason_value)); } g_detected_boot_reason = true; } spl::BootReason GetBootReason() { AMS_ABORT_UNLESS(g_detected_boot_reason); return g_boot_reason; } }