Atmosphere/stratosphere/boot/source/boot_clock_initial_configuration.cpp

38 lines
1.3 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 <stratosphere.hpp>
#include "boot_clock_initial_configuration.hpp"
namespace ams::boot {
namespace {
constexpr inline dd::PhysicalAddress PmcBase = 0x7000E400;
/* Convenience definitions. */
constexpr u32 InitialClockOutMask1x = 0x00C4;
constexpr u32 InitialClockOutMask6x = 0xC4C4;
}
void SetInitialClockConfiguration() {
/* Write mask to APBDEV_PMC_PWR_DET, then clear APBDEV_PMC_PWR_DET_VAL. */
const u32 mask = hos::GetVersion() >= hos::Version_6_0_0 ? InitialClockOutMask6x : InitialClockOutMask1x;
dd::ReadModifyWriteIoRegister(PmcBase + APBDEV_PMC_CLK_OUT_CNTRL, mask, mask);
}
}