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44 lines
1.2 KiB
44 lines
1.2 KiB
// SPDX-License-Identifier: GPL-2.0 OR MIT |
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/* |
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* Copyright (C) 2015-2019 Jason A. Donenfeld <[email protected]>. All Rights Reserved. |
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*/ |
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#include <asm/cpufeature.h> |
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#include <asm/processor.h> |
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#include "curve25519-x86_64.c" |
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static bool curve25519_use_bmi2_adx __ro_after_init; |
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static bool *const curve25519_nobs[] __initconst = { |
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&curve25519_use_bmi2_adx }; |
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static void __init curve25519_fpu_init(void) |
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{ |
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curve25519_use_bmi2_adx = IS_ENABLED(CONFIG_AS_BMI2) && |
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IS_ENABLED(CONFIG_AS_ADX) && |
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boot_cpu_has(X86_FEATURE_BMI2) && |
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boot_cpu_has(X86_FEATURE_ADX); |
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} |
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static inline bool curve25519_arch(u8 mypublic[CURVE25519_KEY_SIZE], |
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const u8 secret[CURVE25519_KEY_SIZE], |
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const u8 basepoint[CURVE25519_KEY_SIZE]) |
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{ |
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if (IS_ENABLED(CONFIG_AS_ADX) && IS_ENABLED(CONFIG_AS_BMI2) && |
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curve25519_use_bmi2_adx) { |
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curve25519_ever64(mypublic, secret, basepoint); |
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return true; |
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} |
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return false; |
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} |
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static inline bool curve25519_base_arch(u8 pub[CURVE25519_KEY_SIZE], |
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const u8 secret[CURVE25519_KEY_SIZE]) |
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{ |
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if (IS_ENABLED(CONFIG_AS_ADX) && IS_ENABLED(CONFIG_AS_BMI2) && |
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curve25519_use_bmi2_adx) { |
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curve25519_ever64_base(pub, secret); |
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return true; |
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} |
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return false; |
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}
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