threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR MIT
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/*
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* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
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*/
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#include <linux/simd.h>
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#include <asm/hwcap.h>
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#include <asm/neon.h>
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asmlinkage void curve25519_neon(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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static bool curve25519_use_neon __ro_after_init;
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static bool *const curve25519_nobs[] __initconst = { &curve25519_use_neon };
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static void __init curve25519_fpu_init(void)
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{
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curve25519_use_neon = elf_hwcap & HWCAP_NEON;
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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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simd_context_t simd_context;
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bool used_arch = false;
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simd_get(&simd_context);
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if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) &&
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!IS_ENABLED(CONFIG_CPU_BIG_ENDIAN) && curve25519_use_neon &&
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simd_use(&simd_context)) {
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curve25519_neon(mypublic, secret, basepoint);
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used_arch = true;
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}
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simd_put(&simd_context);
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return used_arch;
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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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return false;
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}
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