mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-29 13:46:01 +00:00
57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2019 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 "boot_functions.hpp"
|
|
|
|
static constexpr u32 SmcFunctionId_AtmosphereReadWriteRegister = 0xF0000002;
|
|
|
|
static constexpr u32 PmcPhysStart = 0x7000E400;
|
|
static constexpr u32 PmcPhysEnd = 0x7000EFFF;
|
|
|
|
static inline bool IsValidPmcAddress(u32 phys_addr) {
|
|
return (phys_addr & 3) == 0 && PmcPhysStart <= phys_addr && phys_addr <= PmcPhysEnd;
|
|
}
|
|
|
|
static inline u32 SmcAtmosphereReadWriteRegister(u32 phys_addr, u32 value, u32 mask) {
|
|
SecmonArgs args;
|
|
|
|
args.X[0] = SmcFunctionId_AtmosphereReadWriteRegister;
|
|
args.X[1] = phys_addr;
|
|
args.X[2] = mask;
|
|
args.X[3] = value;
|
|
svcCallSecureMonitor(&args);
|
|
if (args.X[0] != 0) {
|
|
std::abort();
|
|
}
|
|
|
|
return static_cast<u32>(args.X[1]);
|
|
}
|
|
|
|
u32 Boot::ReadPmcRegister(u32 phys_addr) {
|
|
if (!IsValidPmcAddress(phys_addr)) {
|
|
std::abort();
|
|
}
|
|
|
|
return SmcAtmosphereReadWriteRegister(phys_addr, 0, 0);
|
|
}
|
|
|
|
void Boot::WritePmcRegister(u32 phys_addr, u32 value, u32 mask) {
|
|
if (!IsValidPmcAddress(phys_addr)) {
|
|
std::abort();
|
|
}
|
|
|
|
SmcAtmosphereReadWriteRegister(phys_addr, value, mask);
|
|
}
|