mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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59 lines
2 KiB
C++
59 lines
2 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <exosphere.hpp>
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#include "se_execute.hpp"
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namespace ams::se {
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namespace {
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bool TestRegister(volatile u32 &r, u16 v) {
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return (static_cast<u16>(reg::Read(r))) == v;
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}
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}
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bool ValidateStickyBits(const StickyBits &bits) {
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/* Get the registers. */
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auto *SE = GetRegisters();
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/* Check SE_SECURITY. */
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if (!TestRegister(SE->SE_SE_SECURITY, bits.se_security)) { return false; }
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/* Check TZRAM_SECURITY. */
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if (!TestRegister(SE->SE_TZRAM_SECURITY, bits.tzram_security)) { return false; }
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/* Check CRYPTO_SECURITY_PERKEY. */
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if (!TestRegister(SE->SE_CRYPTO_SECURITY_PERKEY, bits.crypto_security_perkey)) { return false; }
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/* Check CRYPTO_KEYTABLE_ACCESS. */
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for (int i = 0; i < AesKeySlotCount; ++i) {
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if (!TestRegister(SE->SE_CRYPTO_KEYTABLE_ACCESS[i], bits.crypto_keytable_access[i])) { return false; }
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}
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/* Test RSA_SECURITY_PERKEY */
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if (!TestRegister(SE->SE_RSA_SECURITY_PERKEY, bits.rsa_security_perkey)) { return false; }
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/* Check RSA_KEYTABLE_ACCESS. */
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for (int i = 0; i < RsaKeySlotCount; ++i) {
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if (!TestRegister(SE->SE_RSA_KEYTABLE_ACCESS[i], bits.rsa_keytable_access[i])) { return false; }
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}
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/* All sticky bits are valid. */
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return true;
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}
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}
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