^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * sha2-ce-glue.c - SHA-224/SHA-256 using ARMv8 Crypto Extensions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2015 Linaro Ltd <ard.biesheuvel@linaro.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <crypto/internal/hash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <crypto/internal/simd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <crypto/sha.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <crypto/sha256_base.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/cpufeature.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/crypto.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/hwcap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/simd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/neon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "sha256_glue.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) MODULE_DESCRIPTION("SHA-224/SHA-256 secure hash using ARMv8 Crypto Extensions");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) asmlinkage void sha2_ce_transform(struct sha256_state *sst, u8 const *src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static int sha2_ce_update(struct shash_desc *desc, const u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct sha256_state *sctx = shash_desc_ctx(desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (!crypto_simd_usable() ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) (sctx->count % SHA256_BLOCK_SIZE) + len < SHA256_BLOCK_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return crypto_sha256_arm_update(desc, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) sha256_base_do_update(desc, data, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) (sha256_block_fn *)sha2_ce_transform);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static int sha2_ce_finup(struct shash_desc *desc, const u8 *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) unsigned int len, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (!crypto_simd_usable())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return crypto_sha256_arm_finup(desc, data, len, out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) sha256_base_do_update(desc, data, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) (sha256_block_fn *)sha2_ce_transform);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) sha256_base_do_finalize(desc, (sha256_block_fn *)sha2_ce_transform);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return sha256_base_finish(desc, out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static int sha2_ce_final(struct shash_desc *desc, u8 *out)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return sha2_ce_finup(desc, NULL, 0, out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static struct shash_alg algs[] = { {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) .init = sha224_base_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) .update = sha2_ce_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) .final = sha2_ce_final,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) .finup = sha2_ce_finup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) .descsize = sizeof(struct sha256_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) .digestsize = SHA224_DIGEST_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) .base = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .cra_name = "sha224",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .cra_driver_name = "sha224-ce",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .cra_priority = 300,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .cra_blocksize = SHA256_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .cra_module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) .init = sha256_base_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .update = sha2_ce_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .final = sha2_ce_final,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .finup = sha2_ce_finup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) .descsize = sizeof(struct sha256_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .digestsize = SHA256_DIGEST_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .base = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) .cra_name = "sha256",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) .cra_driver_name = "sha256-ce",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) .cra_priority = 300,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) .cra_blocksize = SHA256_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) .cra_module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) } };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static int __init sha2_ce_mod_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) return crypto_register_shashes(algs, ARRAY_SIZE(algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static void __exit sha2_ce_mod_fini(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) module_cpu_feature_match(SHA2, sha2_ce_mod_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) module_exit(sha2_ce_mod_fini);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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