crypto: sa2ul: Add sha512 HW crypto support

Add sha512 HW crypto support.

Signed-off-by: Keerthy <j-keerthy@ti.com>

drivers/crypto/sa2ul.c

@@ -1511,6 +1511,9 @@ static int zero_message_process(struct ahash_request *req)
 	case SHA256_DIGEST_SIZE:
 		memcpy(req->result, sha256_zero_message_hash, sa_digest_size);
 		break;
+	case SHA512_DIGEST_SIZE:
+		memcpy(req->result, sha512_zero_message_hash, sa_digest_size);
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -1719,6 +1722,11 @@ static int sa_sha256_digest(struct ahash_request *req)
 	return sa_sham_digest(req);
 }
 
+static int sa_sha512_digest(struct ahash_request *req)
+{
+	return sa_sham_digest(req);
+}
+
 static int sa_sham_init(struct ahash_request *req)
 {
 	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
@@ -1899,6 +1907,33 @@ static int sa_sham_cra_sha256_init(struct crypto_tfm *tfm)
 	return 0;
 }
 
+static int sa_sham_cra_sha512_init(struct crypto_tfm *tfm)
+{
+	struct algo_data *ad = kzalloc(sizeof(*ad), GFP_KERNEL);
+	struct sa_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	sa_sham_cra_init_alg(tfm, "sha512");
+
+	ad->enc_eng.eng_id = SA_ENG_ID_NONE;
+	ad->enc_eng.sc_size = SA_CTX_ENC_TYPE1_SZ;
+	ad->auth_eng.eng_id = SA_ENG_ID_AM1;
+	ad->auth_eng.sc_size = SA_CTX_AUTH_TYPE2_SZ;
+	ad->mci_enc = NULL;
+	ad->mci_dec = NULL;
+	ad->inv_key = false;
+	ad->keyed_mac = false;
+	ad->ealg_id = SA_EALG_ID_NONE;
+	ad->aalg_id = SA_AALG_ID_SHA2_512;
+	ad->hash_size = SHA512_DIGEST_SIZE;
+	ad->auth_ctrl = 0x6;
+
+	sa_sha_setup(ctx, ad);
+
+	kfree(ad);
+
+	return 0;
+}
+
 static void sa_sham_cra_exit(struct crypto_tfm *tfm)
 {
 	struct crypto_alg *alg = tfm->__crt_alg;
@@ -2190,6 +2225,30 @@ static struct ahash_alg algs_sha[] = {
 		.cra_exit		= sa_sham_cra_exit,
 	}
 },
+{
+	.init		= sa_sham_init,
+	.update		= sa_sham_update,
+	.final		= sa_sham_final,
+	.finup		= sa_sham_finup,
+	.digest		= sa_sha512_digest,
+	.export		= sa_sham_export,
+	.import		= sa_sham_import,
+	.halg.digestsize	= SHA512_DIGEST_SIZE,
+	.halg.statesize		= 256,
+	.halg.base	= {
+		.cra_name		= "sha512",
+		.cra_driver_name	= "sa-sha512",
+		.cra_priority		= 400,
+		.cra_flags		= CRYPTO_ALG_ASYNC |
+						CRYPTO_ALG_NEED_FALLBACK,
+		.cra_blocksize		= SHA512_BLOCK_SIZE,
+		.cra_ctxsize		= sizeof(struct sa_tfm_ctx),
+		.cra_alignmask		= SA_ALIGN_MASK,
+		.cra_module		= THIS_MODULE,
+		.cra_init		= sa_sham_cra_sha512_init,
+		.cra_exit		= sa_sham_cra_exit,
+	}
+},
 {
 	.init		= sa_sham_init,
 	.update		= sa_sham_update,

drivers/crypto/sa2ul.h

@@ -351,6 +351,7 @@ enum sa_aalg_id {
 	SA_AALG_ID_SHA1,          /* SHA1 mode */
 	SA_AALG_ID_SHA2_224,      /* 224-bit SHA2 mode */
 	SA_AALG_ID_SHA2_256,      /* 256-bit SHA2 mode */
+	SA_AALG_ID_SHA2_512,      /* 512-bit SHA2 mode */
 	SA_AALG_ID_HMAC_MD5,      /* HMAC with MD5 mode */
 	SA_AALG_ID_HMAC_SHA1,     /* HMAC with SHA1 mode */
 	SA_AALG_ID_HMAC_SHA2_224, /* HMAC with 224-bit SHA2 mode */