mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-05 15:59:11 +00:00
95 lines
3.1 KiB
C++
95 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 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 <exosphere.hpp>
|
|
#include "secmon_page_mapper.hpp"
|
|
#include "secmon_user_power_management.hpp"
|
|
|
|
#include "rebootstub_bin.h"
|
|
|
|
namespace ams::secmon {
|
|
|
|
namespace {
|
|
|
|
constexpr inline const uintptr_t PMC = MemoryRegionVirtualDevicePmc.GetAddress();
|
|
|
|
constexpr inline const u32 RebootStubPhysicalAddress = MemoryRegionPhysicalIramRebootStub.GetAddress();
|
|
|
|
enum RebootStubAction {
|
|
RebootStubAction_ShutDown = 0,
|
|
RebootStubAction_JumpToPayload = 1,
|
|
};
|
|
|
|
NORETURN void PerformPmcReboot() {
|
|
/* Write MAIN_RST. */
|
|
reg::Write(PMC + APBDEV_PMC_CNTRL, 0x10);
|
|
|
|
while (true) {
|
|
/* ... */
|
|
}
|
|
}
|
|
|
|
void LoadRebootStub(u32 action) {
|
|
/* Configure the bootrom to boot to warmboot payload. */
|
|
reg::Write(PMC + APBDEV_PMC_SCRATCH0, 0x1);
|
|
|
|
/* Patch the bootrom to perform an SVC immediately after the second spare write. */
|
|
reg::Write(PMC + APBDEV_PMC_SCRATCH45, 0x2E38DFFF);
|
|
reg::Write(PMC + APBDEV_PMC_SCRATCH46, 0x6001DC28);
|
|
|
|
/* Patch the bootrom to jump to the reboot stub we'll prepare in iram on SVC. */
|
|
reg::Write(PMC + APBDEV_PMC_SCRATCH33, RebootStubPhysicalAddress);
|
|
reg::Write(PMC + APBDEV_PMC_SCRATCH40, 0x6000F208);
|
|
|
|
{
|
|
/* Map the iram page. */
|
|
AtmosphereIramPageMapper mapper(RebootStubPhysicalAddress);
|
|
AMS_ABORT_UNLESS(mapper.Map());
|
|
|
|
/* Copy the reboot stub. */
|
|
AMS_ABORT_UNLESS(mapper.CopyToMapping(RebootStubPhysicalAddress, rebootstub_bin, rebootstub_bin_size));
|
|
|
|
/* Set the reboot type. */
|
|
AMS_ABORT_UNLESS(mapper.CopyToMapping(RebootStubPhysicalAddress + 4, std::addressof(action), sizeof(action)));
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
void PerformUserRebootToRcm() {
|
|
/* Configure the bootrom to boot to rcm. */
|
|
reg::Write(PMC + APBDEV_PMC_SCRATCH0, 0x2);
|
|
|
|
/* Reboot. */
|
|
PerformPmcReboot();
|
|
}
|
|
|
|
void PerformUserRebootToPayload() {
|
|
/* Load our reboot stub to iram. */
|
|
LoadRebootStub(RebootStubAction_JumpToPayload);
|
|
|
|
/* Reboot. */
|
|
PerformPmcReboot();
|
|
}
|
|
|
|
void PerformUserShutDown() {
|
|
/* Load our reboot stub to iram. */
|
|
LoadRebootStub(RebootStubAction_ShutDown);
|
|
|
|
/* Reboot. */
|
|
PerformPmcReboot();
|
|
}
|
|
|
|
}
|