1 files changed, 85 insertions, 0 deletions
diff --git a/include/drivers/nxp/crypto/caam/hash.h b/include/drivers/nxp/crypto/caam/hash.h
new file mode 100644
index 000000000..9136dca2d
--- /dev/null
+++ b/include/drivers/nxp/crypto/caam/hash.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright 2017-2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef __HASH_H__
+#define __HASH_H__
+
+#include <stdbool.h>
+
+/* List of hash algorithms */
+enum hash_algo {
+	SHA1 = 0,
+	SHA256
+};
+
+/* number of bytes in the SHA256-256 digest */
+#define SHA256_DIGEST_SIZE 32
+
+/*
+ * number of words in the digest - Digest is kept internally
+ * as 8 32-bit words
+ */
+#define _SHA256_DIGEST_LENGTH 8
+
+/*
+ * block length - A block, treated as a sequence of
+ * 32-bit words
+ */
+#define SHA256_BLOCK_LENGTH 16
+
+/* number of bytes in the block */
+#define SHA256_DATA_SIZE 64
+
+#define MAX_SG		12
+
+struct sg_entry {
+#if defined(NXP_SEC_LE)
+	uint32_t addr_lo;	/* Memory Address - lo */
+	uint32_t addr_hi;	/* Memory Address of start of buffer - hi */
+#else
+	uint32_t addr_hi;	/* Memory Address of start of buffer - hi */
+	uint32_t addr_lo;	/* Memory Address - lo */
+#endif
+
+	uint32_t len_flag;	/* Length of the data in the frame */
+#define SG_ENTRY_LENGTH_MASK	0x3FFFFFFF
+#define SG_ENTRY_EXTENSION_BIT	0x80000000
+#define SG_ENTRY_FINAL_BIT	0x40000000
+	uint32_t bpid_offset;
+#define SG_ENTRY_BPID_MASK	0x00FF0000
+#define SG_ENTRY_BPID_SHIFT	16
+#define SG_ENTRY_OFFSET_MASK	0x00001FFF
+#define SG_ENTRY_OFFSET_SHIFT	0
+};
+
+/*
+ * SHA256-256 context
+ * contain the following fields
+ * State
+ * count low
+ * count high
+ * block data buffer
+ * index to the buffer
+ */
+struct hash_ctx {
+	struct sg_entry sg_tbl[MAX_SG];
+	uint32_t hash_desc[64];
+	uint8_t hash[SHA256_DIGEST_SIZE];
+	uint32_t sg_num;
+	uint32_t len;
+	uint8_t *data;
+	enum hash_algo algo;
+	bool active;
+};
+
+int hash_init(enum hash_algo algo, void **ctx);
+int hash_update(enum hash_algo algo, void *context, void *data_ptr,
+		unsigned int data_len);
+int hash_final(enum hash_algo algo, void *context, void *hash_ptr,
+	       unsigned int hash_len);
+
+#endif