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boot: implement CheckClock
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4 changed files with 65 additions and 4 deletions
48
stratosphere/boot/source/boot_check_clock.cpp
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48
stratosphere/boot/source/boot_check_clock.cpp
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@ -0,0 +1,48 @@
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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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static constexpr u32 ExpectedPlluDivP = (1 << 16);
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static constexpr u32 ExpectedPlluDivN = (25 << 8);
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static constexpr u32 ExpectedPlluDivM = (2 << 0);
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static constexpr u32 ExpectedPlluVal = (ExpectedPlluDivP | ExpectedPlluDivN | ExpectedPlluDivM);
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static constexpr u32 ExpectedPlluMask = 0x1FFFFF;
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static constexpr u32 ExpectedUtmipDivN = (25 << 16);
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static constexpr u32 ExpectedUtmipDivM = (1 << 8);
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static constexpr u32 ExpectedUtmipVal = (ExpectedUtmipDivN | ExpectedUtmipDivM);
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static constexpr u32 ExpectedUtmipMask = 0xFFFF00;
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static bool IsUsbClockValid() {
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u64 _vaddr;
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if (R_FAILED(svcQueryIoMapping(&_vaddr, 0x60006000ul, 0x1000))) {
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std::abort();
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}
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volatile u32 *car_regs = reinterpret_cast<volatile u32 *>(_vaddr);
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const u32 pllu = car_regs[0xC0 >> 2];
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const u32 utmip = car_regs[0x480 >> 2];
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return ((pllu & ExpectedPlluMask) == ExpectedPlluVal) && ((utmip & ExpectedUtmipMask) == ExpectedUtmipVal);
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}
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void Boot::CheckClock() {
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if (!IsUsbClockValid()) {
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/* Sleep for 1s, then reboot. */
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svcSleepThread(1'000'000'000ul);
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Boot::RebootSystem();
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}
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}
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@ -13,7 +13,7 @@
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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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@ -28,16 +28,21 @@ class Boot {
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/* Functions for actually booting. */
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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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/* Power utilities. */
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static void RebootSystem();
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static void ShutdownSystem();
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/* Register Utilities. */
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static u32 ReadPmcRegister(u32 phys_addr);
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static void WritePmcRegister(u32 phys_addr, u32 value, u32 mask = UINT32_MAX);
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/* GPIO Utilities. */
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static u32 GpioConfigure(u32 gpio_pad_name);
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static u32 GpioSetDirection(u32 gpio_pad_name, GpioDirection dir);
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static u32 GpioSetValue(u32 gpio_pad_name, GpioValue val);
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/* SPL Utilities. */
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static HardwareType GetHardwareType();
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@ -116,7 +116,8 @@ int main(int argc, char **argv)
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/* Setup GPIO. */
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Boot::SetInitialGpioConfiguration();
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/* TODO: CheckClock(); */
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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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@ -17,6 +17,7 @@
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#include <switch.h>
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#include <stratosphere.hpp>
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#include <strings.h>
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#include "boot_functions.hpp"
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#include "boot_reboot_manager.hpp"
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#include "fusee-primary_bin.h"
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@ -65,4 +66,10 @@ void BootRebootManager::RebootForFatalError(AtmosphereFatalErrorContext *ctx) {
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CopyToIram(IRAM_PAYLOAD_BASE + IRAM_PAYLOAD_MAX_SIZE, g_work_page, sizeof(g_work_page));
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RebootToIramPayload();
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}
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void Boot::RebootSystem() {
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if (R_FAILED(BootRebootManager::PerformReboot())) {
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std::abort();
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}
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}
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