fsl_sec: Add hardware accelerated SHA256 and SHA1

[karo-tx-uboot.git] / drivers / crypto / fsl / fsl_hash.c

diff --git a/drivers/crypto/fsl/fsl_hash.c b/drivers/crypto/fsl/fsl_hash.c
new file mode 100644 (file)
index 0000000..d77f257
--- /dev/null
+++ b/drivers/crypto/fsl/fsl_hash.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ *
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include "jobdesc.h"
+#include "desc.h"
+#include "jr.h"
+
+#define CRYPTO_MAX_ALG_NAME    80
+#define SHA1_DIGEST_SIZE        20
+#define SHA256_DIGEST_SIZE      32
+
+struct caam_hash_template {
+       char name[CRYPTO_MAX_ALG_NAME];
+       unsigned int digestsize;
+       u32 alg_type;
+};
+
+enum caam_hash_algos {
+       SHA1 = 0,
+       SHA256
+};
+
+static struct caam_hash_template driver_hash[] = {
+       {
+               .name = "sha1",
+               .digestsize = SHA1_DIGEST_SIZE,
+               .alg_type = OP_ALG_ALGSEL_SHA1,
+       },
+       {
+               .name = "sha256",
+               .digestsize = SHA256_DIGEST_SIZE,
+               .alg_type = OP_ALG_ALGSEL_SHA256,
+       },
+};
+
+int caam_hash(const unsigned char *pbuf, unsigned int buf_len,
+             unsigned char *pout, enum caam_hash_algos algo)
+{
+       int ret = 0;
+       uint32_t *desc;
+
+       desc = malloc(sizeof(int) * MAX_CAAM_DESCSIZE);
+       if (!desc) {
+               debug("Not enough memory for descriptor allocation\n");
+               return -1;
+       }
+
+       inline_cnstr_jobdesc_hash(desc, pbuf, buf_len, pout,
+                                 driver_hash[algo].alg_type,
+                                 driver_hash[algo].digestsize,
+                                 0);
+
+       ret = run_descriptor_jr(desc);
+
+       free(desc);
+       return ret;
+}
+
+void hw_sha256(const unsigned char *pbuf, unsigned int buf_len,
+                       unsigned char *pout, unsigned int chunk_size)
+{
+       if (caam_hash(pbuf, buf_len, pout, SHA256))
+               printf("CAAM was not setup properly or it is faulty\n");
+}
+
+void hw_sha1(const unsigned char *pbuf, unsigned int buf_len,
+                       unsigned char *pout, unsigned int chunk_size)
+{
+       if (caam_hash(pbuf, buf_len, pout, SHA1))
+               printf("CAAM was not setup properly or it is faulty\n");
+}