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Atmosphere/exosphere/program/source/smc/secmon_smc_carveout.cpp

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/*
* 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"
#include "../secmon_setup.hpp"
#include "secmon_smc_carveout.hpp"
namespace ams::secmon::smc {
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SmcResult SmcSetKernelCarveoutRegion(SmcArguments &args) {
/* Decode arguments. */
const int index = args.r[1];
const uintptr_t address = args.r[2];
const size_t size = args.r[3];
/* Validate arguments. */
SMC_R_UNLESS(0 <= index && index < KernelCarveoutCount, InvalidArgument);
SMC_R_UNLESS(util::IsAligned(address, 128_KB), InvalidArgument);
SMC_R_UNLESS(util::IsAligned(size, 128_KB), InvalidArgument);
SMC_R_UNLESS(size <= CarveoutSizeMax, InvalidArgument);
/* Set the carveout. */
SetKernelCarveoutRegion(index, address, size);
return SmcResult::Success;
}
}