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// SPDX-License-Identifier: GPL-2.0-only
/*
* sha2-ce-glue.c - SHA-224/SHA-256 using ARMv8 Crypto Extensions
*
* Copyright (C) 2014 - 2017 Linaro Ltd <ard.biesheuvel@linaro.org>
*/
#include <common.h>
#include <digest.h>
#include <init.h>
#include <crypto/sha.h>
#include <crypto/sha256_base.h>
#include <crypto/internal.h>
#include <linux/linkage.h>
#include <asm/byteorder.h>
#include <asm/neon.h>
#include <asm/neon.h>
MODULE_DESCRIPTION("SHA-224/SHA-256 secure hash using ARMv8 Crypto Extensions");
MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS_CRYPTO("sha224");
MODULE_ALIAS_CRYPTO("sha256");
struct sha256_ce_state {
struct sha256_state sst;
u32 finalize;
};
extern const u32 sha256_ce_offsetof_count;
extern const u32 sha256_ce_offsetof_finalize;
asmlinkage int sha2_ce_transform(struct sha256_ce_state *sst, u8 const *src,
int blocks);
static void __sha2_ce_transform(struct sha256_state *sst, u8 const *src,
int blocks)
{
while (blocks) {
int rem;
kernel_neon_begin();
rem = sha2_ce_transform(container_of(sst, struct sha256_ce_state,
sst), src, blocks);
kernel_neon_end();
src += (blocks - rem) * SHA256_BLOCK_SIZE;
blocks = rem;
}
}
const u32 sha256_ce_offsetof_count = offsetof(struct sha256_ce_state,
sst.count);
const u32 sha256_ce_offsetof_finalize = offsetof(struct sha256_ce_state,
finalize);
static int sha256_ce_update(struct digest *desc, const void *data,
unsigned long len)
{
struct sha256_ce_state *sctx = digest_ctx(desc);
sctx->finalize = 0;
sha256_base_do_update(desc, data, len, __sha2_ce_transform);
return 0;
}
static int sha256_ce_final(struct digest *desc, u8 *out)
{
struct sha256_ce_state *sctx = digest_ctx(desc);
sctx->finalize = 0;
sha256_base_do_finalize(desc, __sha2_ce_transform);
return sha256_base_finish(desc, out);
}
static struct digest_algo sha224 = {
.base = {
.name = "sha224",
.driver_name = "sha224-ce",
.priority = 200,
.algo = HASH_ALGO_SHA224,
},
.length = SHA224_DIGEST_SIZE,
.init = sha224_base_init,
.update = sha256_ce_update,
.final = sha256_ce_final,
.digest = digest_generic_digest,
.verify = digest_generic_verify,
.ctx_length = sizeof(struct sha256_ce_state),
};
static int sha224_ce_digest_register(void)
{
return digest_algo_register(&sha224);
}
coredevice_initcall(sha224_ce_digest_register);
static struct digest_algo sha256 = {
.base = {
.name = "sha256",
.driver_name = "sha256-ce",
.priority = 200,
.algo = HASH_ALGO_SHA256,
},
.length = SHA256_DIGEST_SIZE,
.init = sha256_base_init,
.update = sha256_ce_update,
.final = sha256_ce_final,
.digest = digest_generic_digest,
.verify = digest_generic_verify,
.ctx_length = sizeof(struct sha256_ce_state),
};
static int sha256_ce_digest_register(void)
{
return digest_algo_register(&sha256);
}
coredevice_initcall(sha256_ce_digest_register);
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