mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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108 lines
No EOL
3.1 KiB
C++
108 lines
No EOL
3.1 KiB
C++
/*
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* Copyright (c) 2018-2020 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_boot_reason.hpp"
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#include "boot_pmic_driver.hpp"
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#include "boot_rtc_driver.hpp"
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namespace ams::boot {
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namespace {
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/* Types. */
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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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/* Globals. */
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u32 g_boot_reason = 0;
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bool g_detected_boot_reason = false;
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/* Helpers. */
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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 && !spl::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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}
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void 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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R_ASSERT(pmic_driver.GetPowerIntr(&power_intr));
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R_ASSERT(pmic_driver.GetNvErc(&nv_erc));
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R_ASSERT(pmic_driver.GetAcOk(&ac_ok));
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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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R_ASSERT(rtc_driver.GetRtcIntr(&rtc_intr));
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R_ASSERT(rtc_driver.GetRtcIntrM(&rtc_intr_m));
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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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if (hos::GetVersion() >= hos::Version_300) {
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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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R_ASSERT(splSetBootReason(boot_reason_value.value));
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}
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g_detected_boot_reason = true;
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}
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u32 GetBootReason() {
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AMS_ASSERT(g_detected_boot_reason);
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return g_boot_reason;
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}
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} |