MLK-9769-19 Add ARC4-ECB support for CAAM in i.MX6 family

Adds ARC4-ECB Mode support to the CAAM crypto accelerator core in
the i.MX6 family of SoC devices.

Note that CAAM also goes by sec-4.0 or sec-5.0 in other product families (such as QorIQ).
Thus the property names are often tied to the sec-4.0+ nomenclature.

Signed-off-by: Winston Hudson (b45308) <winston.h.hudson@freescale.com>
Signed-off-by: Dan Douglass <dan.douglass@freescale.com>

drivers/crypto/caam/caamalg.c

@@ -1962,6 +1962,23 @@ static struct caam_alg_template driver_algs[] = {
 			},
 		.class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_XTS,
 	},
+	{
+		.name = "ecb(arc4)",
+		.driver_name = "ecb-arc4-caam",
+		.blocksize = ARC4_BLOCK_SIZE,
+		.type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+		.template_ablkcipher = {
+			.setkey = ablkcipher_setkey,
+			.encrypt = ablkcipher_encrypt,
+			.decrypt = ablkcipher_decrypt,
+			.geniv = "eseqiv",
+			.min_keysize = ARC4_MIN_KEY_SIZE,
+			.max_keysize = ARC4_MAX_KEY_SIZE,
+			.ivsize = ARC4_BLOCK_SIZE,
+		},
+		.class1_alg_type = OP_ALG_ALGSEL_ARC4 | OP_ALG_AAI_ECB
+	},
+
 };
 
 static struct caam_aead_alg driver_aeads[] = {

drivers/crypto/caam/desc.h

@@ -1645,4 +1645,8 @@
 /* Frame Descriptor Command for Replacement Job Descriptor */
 #define FD_CMD_REPLACE_JOB_DESC				0x20000000
 
+#define ARC4_BLOCK_SIZE       1
+#define ARC4_MAX_KEY_SIZE     256
+#define ARC4_MIN_KEY_SIZE     1
+
 #endif /* DESC_H */