mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-18 08:11:21 +00:00
100 lines
3.3 KiB
C++
100 lines
3.3 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 <exosphere.hpp>
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namespace ams::wdt {
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namespace {
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volatile uintptr_t g_register_address = secmon::MemoryRegionPhysicalDeviceTimer.GetAddress();
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#if defined(ATMOSPHERE_ARCH_ARM64)
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NOINLINE void Reboot(uintptr_t registers) {
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__asm__ __volatile__(
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/* Get the current core. */
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"mrs x12, mpidr_el1\n"
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"and x12, x12, #0xFF\n"
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/* Get the offsets of the registers we want to write */
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"mov x10, #0x8\n"
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"mov x11, #0x20\n"
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"madd x10, x10, x12, %[registers]\n"
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"madd x11, x11, x12, %[registers]\n"
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"add x10, x10, #0x60\n"
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"add x11, x11, #0x100\n"
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/* Write the magic unlock pattern. */
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"mov w9, #0xC45A\n"
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"str w9, [x11, #0xC]\n"
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/* Disable the counters. */
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"mov w9, #0x2\n"
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"str w9, [x11, #0x8]\n"
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/* Start periodic timer. */
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"mov w9, #0xC0000000\n"
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"str w9, [x10]\n"
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/* Set reboot source to the timer we started. */
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"mov w9, #0x8015\n"
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"add w9, w9, w12\n"
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"str w9, [x11]\n"
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/* Enable the counters. */
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"mov w9, #0x1\n"
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"str w9, [x11, #0x8]\n"
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/* Wait forever. */
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"1: b 1b"
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: [registers]"=&r"(registers)
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:
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: "x9", "x10", "x11", "x12", "memory"
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);
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}
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#elif defined(ATMOSPHERE_ARCH_ARM)
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NOINLINE void Reboot(uintptr_t registers) {
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/* Write the magic unlock pattern. */
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reg::Write(registers + 0x18C, 0xC45A);
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/* Disable the counters. */
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reg::Write(registers + 0x188, 0x2);
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/* Start periodic timer. */
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reg::Write(registers + 0x080, 0xC0000000);
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/* Set reboot source to the timer we started. */
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reg::Write(registers + 0x180, 0x8019);
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/* Enable the counters. */
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reg::Write(registers + 0x188, 0x1);
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/* Wait forever until the reboot takes. */
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AMS_INFINITE_LOOP();
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}
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#endif
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}
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void SetRegisterAddress(uintptr_t address) {
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g_register_address = address;
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}
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NOINLINE void Reboot() {
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const uintptr_t registers = g_register_address;
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Reboot(registers);
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}
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} |