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Commit 927574e0 authored by Yael Chemla's avatar Yael Chemla Committed by Herbert Xu
Browse files

crypto: ccree - add SM3 support 



Add support for SM3 cipher in CryptoCell 713.

Signed-off-by: default avatarYael Chemla <yael.chemla@foss.arm.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 18a1dc1f

drivers/crypto/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -763,6 +763,7 @@ config CRYPTO_DEV_CCREE 
	select CRYPTO_CTR

	select CRYPTO_XTS

	select CRYPTO_SM4

	select CRYPTO_SM3

	help

	  Say 'Y' to enable a driver for the REE interface of the Arm

	  TrustZone CryptoCell family of processors. Currently the

drivers/crypto/ccree/cc_crypto_ctx.h

+3 −1
Original line number Diff line number Diff line
@@ -115,7 +115,8 @@ enum drv_hash_mode { 
	DRV_HASH_CBC_MAC = 6,

	DRV_HASH_XCBC_MAC = 7,

	DRV_HASH_CMAC = 8,

	DRV_HASH_MODE_NUM = 9,

	DRV_HASH_SM3 = 9,

	DRV_HASH_MODE_NUM = 10,

	DRV_HASH_RESERVE32B = S32_MAX

};
@@ -127,6 +128,7 @@ enum drv_hash_hw_mode { 
	DRV_HASH_HW_SHA512 = 4,

	DRV_HASH_HW_SHA384 = 12,

	DRV_HASH_HW_GHASH = 6,

	DRV_HASH_HW_SM3 = 14,

	DRV_HASH_HW_RESERVE32B = S32_MAX

};

drivers/crypto/ccree/cc_hash.c

+96 −23
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 
#include <crypto/algapi.h>

#include <crypto/hash.h>

#include <crypto/md5.h>

#include <crypto/sm3.h>

#include <crypto/internal/hash.h>



#include "cc_driver.h"
@@ -16,6 +17,7 @@ 


#define CC_MAX_HASH_SEQ_LEN 12

#define CC_MAX_OPAD_KEYS_SIZE CC_MAX_HASH_BLCK_SIZE

#define CC_SM3_HASH_LEN_SIZE 8



struct cc_hash_handle {

	cc_sram_addr_t digest_len_sram_addr; /* const value in SRAM*/
@@ -43,6 +45,9 @@ static u64 sha384_init[] = { 
static u64 sha512_init[] = {

	SHA512_H7, SHA512_H6, SHA512_H5, SHA512_H4,

	SHA512_H3, SHA512_H2, SHA512_H1, SHA512_H0 };

static const u32 sm3_init[] = {

	SM3_IVH, SM3_IVG, SM3_IVF, SM3_IVE,

	SM3_IVD, SM3_IVC, SM3_IVB, SM3_IVA };



static void cc_setup_xcbc(struct ahash_request *areq, struct cc_hw_desc desc[],

			  unsigned int *seq_size);
@@ -1074,6 +1079,9 @@ static int cc_get_hash_len(struct crypto_tfm *tfm) 
{

	struct cc_hash_ctx *ctx = crypto_tfm_ctx(tfm);



	if (ctx->hash_mode == DRV_HASH_SM3)

		return CC_SM3_HASH_LEN_SIZE;

	else

		return cc_get_default_hash_len(ctx->drvdata);

}
@@ -1523,6 +1531,7 @@ struct cc_hash_template { 
	char mac_name[CRYPTO_MAX_ALG_NAME];

	char mac_driver_name[CRYPTO_MAX_ALG_NAME];

	unsigned int blocksize;

	bool is_mac;

	bool synchronize;

	struct ahash_alg template_ahash;

	int hash_mode;
@@ -1544,6 +1553,7 @@ static struct cc_hash_template driver_hash[] = { 
		.mac_name = "hmac(sha1)",

		.mac_driver_name = "hmac-sha1-ccree",

		.blocksize = SHA1_BLOCK_SIZE,

		.is_mac = true,

		.synchronize = false,

		.template_ahash = {

			.init = cc_hash_init,
@@ -1570,6 +1580,7 @@ static struct cc_hash_template driver_hash[] = { 
		.mac_name = "hmac(sha256)",

		.mac_driver_name = "hmac-sha256-ccree",

		.blocksize = SHA256_BLOCK_SIZE,

		.is_mac = true,

		.template_ahash = {

			.init = cc_hash_init,

			.update = cc_hash_update,
@@ -1595,6 +1606,7 @@ static struct cc_hash_template driver_hash[] = { 
		.mac_name = "hmac(sha224)",

		.mac_driver_name = "hmac-sha224-ccree",

		.blocksize = SHA224_BLOCK_SIZE,

		.is_mac = true,

		.template_ahash = {

			.init = cc_hash_init,

			.update = cc_hash_update,
@@ -1620,6 +1632,7 @@ static struct cc_hash_template driver_hash[] = { 
		.mac_name = "hmac(sha384)",

		.mac_driver_name = "hmac-sha384-ccree",

		.blocksize = SHA384_BLOCK_SIZE,

		.is_mac = true,

		.template_ahash = {

			.init = cc_hash_init,

			.update = cc_hash_update,
@@ -1645,6 +1658,7 @@ static struct cc_hash_template driver_hash[] = { 
		.mac_name = "hmac(sha512)",

		.mac_driver_name = "hmac-sha512-ccree",

		.blocksize = SHA512_BLOCK_SIZE,

		.is_mac = true,

		.template_ahash = {

			.init = cc_hash_init,

			.update = cc_hash_update,
@@ -1670,6 +1684,7 @@ static struct cc_hash_template driver_hash[] = { 
		.mac_name = "hmac(md5)",

		.mac_driver_name = "hmac-md5-ccree",

		.blocksize = MD5_HMAC_BLOCK_SIZE,

		.is_mac = true,

		.template_ahash = {

			.init = cc_hash_init,

			.update = cc_hash_update,
@@ -1689,10 +1704,35 @@ static struct cc_hash_template driver_hash[] = { 
		.inter_digestsize = MD5_DIGEST_SIZE,

		.min_hw_rev = CC_HW_REV_630,

	},

	{

		.name = "sm3",

		.driver_name = "sm3-ccree",

		.blocksize = SM3_BLOCK_SIZE,

		.is_mac = false,

		.template_ahash = {

			.init = cc_hash_init,

			.update = cc_hash_update,

			.final = cc_hash_final,

			.finup = cc_hash_finup,

			.digest = cc_hash_digest,

			.export = cc_hash_export,

			.import = cc_hash_import,

			.setkey = cc_hash_setkey,

			.halg = {

				.digestsize = SM3_DIGEST_SIZE,

				.statesize = CC_STATE_SIZE(SM3_DIGEST_SIZE),

			},

		},

		.hash_mode = DRV_HASH_SM3,

		.hw_mode = DRV_HASH_HW_SM3,

		.inter_digestsize = SM3_DIGEST_SIZE,

		.min_hw_rev = CC_HW_REV_713,

	},

	{

		.mac_name = "xcbc(aes)",

		.mac_driver_name = "xcbc-aes-ccree",

		.blocksize = AES_BLOCK_SIZE,

		.is_mac = true,

		.template_ahash = {

			.init = cc_hash_init,

			.update = cc_mac_update,
@@ -1716,6 +1756,7 @@ static struct cc_hash_template driver_hash[] = { 
		.mac_name = "cmac(aes)",

		.mac_driver_name = "cmac-aes-ccree",

		.blocksize = AES_BLOCK_SIZE,

		.is_mac = true,

		.template_ahash = {

			.init = cc_hash_init,

			.update = cc_mac_update,
@@ -1788,6 +1829,7 @@ int cc_init_hash_sram(struct cc_drvdata *drvdata) 
	unsigned int larval_seq_len = 0;

	struct cc_hw_desc larval_seq[CC_DIGEST_SIZE_MAX / sizeof(u32)];

	bool large_sha_supported = (drvdata->hw_rev >= CC_HW_REV_712);

	bool sm3_supported = (drvdata->hw_rev >= CC_HW_REV_713);

	int rc = 0;



	/* Copy-to-sram digest-len */
@@ -1853,6 +1895,17 @@ int cc_init_hash_sram(struct cc_drvdata *drvdata) 
	sram_buff_ofs += sizeof(sha256_init);

	larval_seq_len = 0;



	if (sm3_supported) {

		cc_set_sram_desc(sm3_init, sram_buff_ofs,

				 ARRAY_SIZE(sm3_init), larval_seq,

				 &larval_seq_len);

		rc = send_request_init(drvdata, larval_seq, larval_seq_len);

		if (rc)

			goto init_digest_const_err;

		sram_buff_ofs += sizeof(sm3_init);

		larval_seq_len = 0;

	}



	if (large_sha_supported) {

		cc_set_sram_desc((u32 *)sha384_init, sram_buff_ofs,

				 (ARRAY_SIZE(sha384_init) * 2), larval_seq,
@@ -1919,6 +1972,9 @@ int cc_hash_alloc(struct cc_drvdata *drvdata) 
			sizeof(sha224_init) +

			sizeof(sha256_init);



	if (drvdata->hw_rev >= CC_HW_REV_713)

		sram_size_to_alloc += sizeof(sm3_init);



	if (drvdata->hw_rev >= CC_HW_REV_712)

		sram_size_to_alloc += sizeof(digest_len_sha512_init) +

			sizeof(sha384_init) + sizeof(sha512_init);
@@ -1948,7 +2004,7 @@ int cc_hash_alloc(struct cc_drvdata *drvdata) 
		/* We either support both HASH and MAC or none */

		if (driver_hash[alg].min_hw_rev > drvdata->hw_rev)

			continue;



		if (driver_hash[alg].is_mac) {

			/* register hmac version */

			t_alg = cc_alloc_hash_alg(&driver_hash[alg], dev, true);

			if (IS_ERR(t_alg)) {
@@ -1966,9 +2022,10 @@ int cc_hash_alloc(struct cc_drvdata *drvdata) 
				kfree(t_alg);

				goto fail;

			} else {

			list_add_tail(&t_alg->entry, &hash_handle->hash_list);

				list_add_tail(&t_alg->entry,

					      &hash_handle->hash_list);

			}

		}



		if (hw_mode == DRV_CIPHER_XCBC_MAC ||

		    hw_mode == DRV_CIPHER_CMAC)

			continue;
@@ -2170,6 +2227,8 @@ static const void *cc_larval_digest(struct device *dev, u32 mode) 
		return sha384_init;

	case DRV_HASH_SHA512:

		return sha512_init;

	case DRV_HASH_SM3:

		return sm3_init;

	default:

		dev_err(dev, "Invalid hash mode (%d)\n", mode);

		return md5_init;
@@ -2190,6 +2249,8 @@ cc_sram_addr_t cc_larval_digest_addr(void *drvdata, u32 mode) 
	struct cc_drvdata *_drvdata = (struct cc_drvdata *)drvdata;

	struct cc_hash_handle *hash_handle = _drvdata->hash_handle;

	struct device *dev = drvdata_to_dev(_drvdata);

	bool sm3_supported = (_drvdata->hw_rev >= CC_HW_REV_713);

	cc_sram_addr_t addr;



	switch (mode) {

	case DRV_HASH_NULL:
@@ -2208,19 +2269,31 @@ cc_sram_addr_t cc_larval_digest_addr(void *drvdata, u32 mode) 
			sizeof(md5_init) +

			sizeof(sha1_init) +

			sizeof(sha224_init));

	case DRV_HASH_SHA384:

	case DRV_HASH_SM3:

		return (hash_handle->larval_digest_sram_addr +

			sizeof(md5_init) +

			sizeof(sha1_init) +

			sizeof(sha224_init) +

			sizeof(sha256_init));

	case DRV_HASH_SHA384:

		addr = (hash_handle->larval_digest_sram_addr +

			sizeof(md5_init) +

			sizeof(sha1_init) +

			sizeof(sha224_init) +

			sizeof(sha256_init));

		if (sm3_supported)

			addr += sizeof(sm3_init);

		return addr;

	case DRV_HASH_SHA512:

		return (hash_handle->larval_digest_sram_addr +

		addr = (hash_handle->larval_digest_sram_addr +

			sizeof(md5_init) +

			sizeof(sha1_init) +

			sizeof(sha224_init) +

			sizeof(sha256_init) +

			sizeof(sha384_init));

		if (sm3_supported)

			addr += sizeof(sm3_init);

		return addr;

	default:

		dev_err(dev, "Invalid hash mode (%d)\n", mode);

	}

drivers/crypto/ccree/cc_hw_queue_defs.h

+13 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ 
#define WORD3_QUEUE_LAST_IND	CC_GENMASK(3, QUEUE_LAST_IND)

#define WORD4_ACK_NEEDED	CC_GENMASK(4, ACK_NEEDED)

#define WORD4_AES_SEL_N_HASH	CC_GENMASK(4, AES_SEL_N_HASH)

#define WORD4_AES_XOR_CRYPTO_KEY CC_GENMASK(4, AES_XOR_CRYPTO_KEY)

#define WORD4_BYTES_SWAP	CC_GENMASK(4, BYTES_SWAP)

#define WORD4_CIPHER_CONF0	CC_GENMASK(4, CIPHER_CONF0)

#define WORD4_CIPHER_CONF1	CC_GENMASK(4, CIPHER_CONF1)
@@ -396,6 +397,16 @@ static inline void set_aes_not_hash_mode(struct cc_hw_desc *pdesc) 
	pdesc->word[4] |= FIELD_PREP(WORD4_AES_SEL_N_HASH, 1);

}



/*

 * Set aes xor crypto key, this in some secenrios select SM3 engine

 *

 * @pdesc: pointer HW descriptor struct

 */

static inline void set_aes_xor_crypto_key(struct cc_hw_desc *pdesc)

{

	pdesc->word[4] |= FIELD_PREP(WORD4_AES_XOR_CRYPTO_KEY, 1);

}



/*

 * Set the DOUT field of a HW descriptors to SRAM mode

 * Note: No need to check SRAM alignment since host requests do not use SRAM and
@@ -469,6 +480,8 @@ static inline void set_hash_cipher_mode(struct cc_hw_desc *pdesc, 
					enum drv_hash_mode hash_mode)

{

	set_cipher_mode(pdesc, cipher_mode);

	if (hash_mode == DRV_HASH_SM3)

		set_aes_xor_crypto_key(pdesc);

}



/*