mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-24 03:06:17 +00:00
99 lines
No EOL
3.3 KiB
C++
99 lines
No EOL
3.3 KiB
C++
/*
|
|
* 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 <exosphere.hpp>
|
|
#include "secmon_error.hpp"
|
|
|
|
namespace ams::secmon {
|
|
|
|
namespace {
|
|
|
|
constexpr inline uintptr_t PMC = MemoryRegionVirtualDevicePmc.GetAddress();
|
|
|
|
constinit util::Atomic<bool> g_is_locked = false;
|
|
|
|
}
|
|
|
|
void ExceptionHandlerImpl(uintptr_t lr, uintptr_t sp) {
|
|
/* On release config, we won't actually use the passed parameters. */
|
|
AMS_UNUSED(lr, sp);
|
|
|
|
/* Ensure that previous logs have been flushed. */
|
|
AMS_LOG_FLUSH();
|
|
|
|
/* Get system registers. */
|
|
uintptr_t far_el1, far_el3, elr_el3;
|
|
util::BitPack32 esr_el3;
|
|
|
|
HW_CPU_GET_FAR_EL1(far_el1);
|
|
HW_CPU_GET_FAR_EL3(far_el3);
|
|
HW_CPU_GET_ELR_EL3(elr_el3);
|
|
HW_CPU_GET_ESR_EL3(esr_el3);
|
|
|
|
/* Print some whitespace before the exception handler. */
|
|
AMS_LOG("\n\n");
|
|
AMS_SECMON_LOG("ExceptionHandler\n");
|
|
AMS_SECMON_LOG("----------------\n");
|
|
AMS_SECMON_LOG("esr: 0x%08X\n", esr_el3.value);
|
|
AMS_SECMON_LOG(" Exception Class: 0x%02X\n", esr_el3.Get<hw::EsrEl3::Ec>());
|
|
AMS_SECMON_LOG(" Instruction Length: %d\n", esr_el3.Get<hw::EsrEl3::Il>() ? 32 : 16);
|
|
AMS_SECMON_LOG(" Instruction Specific Syndrome: 0x%07X\n", esr_el3.Get<hw::EsrEl3::Iss>());
|
|
|
|
AMS_SECMON_LOG("far_el1: 0x%016lX\n", far_el1);
|
|
AMS_SECMON_LOG("far_el3: 0x%016lX\n", far_el3);
|
|
AMS_SECMON_LOG("elr_el3: 0x%016lX\n", elr_el3);
|
|
|
|
AMS_SECMON_LOG("lr: 0x%016lX\n", lr);
|
|
AMS_SECMON_LOG("sp: 0x%016lX\n", sp);
|
|
|
|
AMS_DUMP(reinterpret_cast<void *>(sp), util::AlignUp(sp, mmu::PageSize) - sp);
|
|
|
|
AMS_LOG_FLUSH();
|
|
}
|
|
|
|
NORETURN void ExceptionHandler() {
|
|
/* Get link register and stack pointer. */
|
|
u64 lr, sp;
|
|
{
|
|
__asm__ __volatile__("mov %0, lr" : "=r"(lr) :: "memory");
|
|
__asm__ __volatile__("mov %0, sp" : "=r"(sp) :: "memory");
|
|
}
|
|
|
|
/* Acquire exclusive access to exception handling logic. */
|
|
if (!g_is_locked.Exchange(true)) {
|
|
/* Invoke the exception handler impl. */
|
|
ExceptionHandlerImpl(lr, sp);
|
|
|
|
/* Lockout the security engine. */
|
|
se::Lockout();
|
|
|
|
/* Lockout fuses. */
|
|
fuse::Lockout();
|
|
|
|
/* Disable crypto operations after reboot. */
|
|
reg::Write(PMC + APBDEV_PMC_CRYPTO_OP, 0);
|
|
|
|
/* Perform an error reboot. */
|
|
secmon::SetError(pkg1::ErrorInfo_UnknownAbort);
|
|
secmon::ErrorReboot();
|
|
} else {
|
|
/* Wait forever while the first core prints the exception and reboots. */
|
|
while (true) {
|
|
util::WaitMicroSeconds(1000);
|
|
}
|
|
}
|
|
}
|
|
|
|
} |