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Atmosphere/exosphere/program/source/boot/secmon_crt0_cpp.cpp
2020-06-14 22:07:45 -07:00

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/*
* 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_boot.hpp"
#include "../secmon_setup.hpp"
extern "C" void __libc_init_array();
namespace ams::secmon::boot {
void Initialize(uintptr_t bss_start, size_t bss_end, uintptr_t boot_bss_start, uintptr_t boot_bss_end) {
/* Set our start time. */
auto &secmon_params = *MemoryRegionPhysicalDeviceBootloaderParams.GetPointer<pkg1::SecureMonitorParameters>();
secmon_params.secmon_start_time = *reinterpret_cast<volatile u32 *>(MemoryRegionPhysicalDeviceTimer.GetAddress() + 0x10);
/* Setup DMA controllers. */
SetupSocDmaControllers();
/* Make the page table. */
MakePageTable();
/* Setup memory controllers the MMU. */
SetupCpuMemoryControllersEnableMmu();
/* Clear bss. */
std::memset(reinterpret_cast<void *>(bss_start), 0, bss_end - bss_start);
std::memset(reinterpret_cast<void *>(boot_bss_start), 0, boot_bss_end - boot_bss_start);
/* Call init array. */
__libc_init_array();
}
}