diff --git a/include/psa/crypto_builtin.h b/include/psa/crypto_builtin.h
new file mode 100644
index 0000000..7b66172
--- /dev/null
+++ b/include/psa/crypto_builtin.h
@@ -0,0 +1,135 @@
+/*
+ *  Context structure declaration of the software-based drivers called
+ *  through the PSA Crypto driver dispatch layer.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef PSA_CRYPTO_BUILTIN_H
+#define PSA_CRYPTO_BUILTIN_H
+
+#include <psa/crypto_driver_common.h>
+
+/*
+ * Hash multi-part operation definitions.
+ */
+
+#include "mbedtls/md2.h"
+#include "mbedtls/md4.h"
+#include "mbedtls/md5.h"
+#include "mbedtls/ripemd160.h"
+#include "mbedtls/sha1.h"
+#include "mbedtls/sha256.h"
+#include "mbedtls/sha512.h"
+
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_MD2) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_MD4) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_MD5) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_RIPEMD160) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_SHA_1) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_SHA_224) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_SHA_256) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_SHA_384) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_SHA_512)
+#define MBEDTLS_PSA_BUILTIN_HASH
+#endif
+
+typedef struct
+{
+    psa_algorithm_t alg;
+    union
+    {
+        unsigned dummy; /* Make the union non-empty even with no supported algorithms. */
+#if defined(MBEDTLS_MD2_C)
+        mbedtls_md2_context md2;
+#endif
+#if defined(MBEDTLS_MD4_C)
+        mbedtls_md4_context md4;
+#endif
+#if defined(MBEDTLS_MD5_C)
+        mbedtls_md5_context md5;
+#endif
+#if defined(MBEDTLS_RIPEMD160_C)
+        mbedtls_ripemd160_context ripemd160;
+#endif
+#if defined(MBEDTLS_SHA1_C)
+        mbedtls_sha1_context sha1;
+#endif
+#if defined(MBEDTLS_SHA256_C)
+        mbedtls_sha256_context sha256;
+#endif
+#if defined(MBEDTLS_SHA512_C)
+        mbedtls_sha512_context sha512;
+#endif
+    } ctx;
+} mbedtls_psa_hash_operation_t;
+
+#define MBEDTLS_PSA_HASH_OPERATION_INIT {0, {0}}
+
+/*
+ * Cipher multi-part operation definitions.
+ */
+
+#include "mbedtls/cipher.h"
+
+#if defined(MBEDTLS_PSA_BUILTIN_ALG_STREAM_CIPHER) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_CTR) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_CFB) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_OFB) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_XTS) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_CBC_NO_PADDING) || \
+    defined(MBEDTLS_PSA_BUILTIN_ALG_CBC_PKCS7)
+#define MBEDTLS_PSA_BUILTIN_CIPHER  1
+#endif
+
+typedef struct {
+    /* Context structure for the Mbed TLS cipher implementation. */
+    psa_algorithm_t alg;
+    uint8_t iv_length;
+    uint8_t block_length;
+    mbedtls_cipher_context_t cipher;
+} mbedtls_psa_cipher_operation_t;
+
+#define MBEDTLS_PSA_CIPHER_OPERATION_INIT {0, 0, 0, {0}}
+
+/*
+ * BEYOND THIS POINT, TEST DRIVER DECLARATIONS ONLY.
+ */
+#if defined(PSA_CRYPTO_DRIVER_TEST)
+
+typedef mbedtls_psa_hash_operation_t mbedtls_transparent_test_driver_hash_operation_t;
+
+#define MBEDTLS_TRANSPARENT_TEST_DRIVER_HASH_OPERATION_INIT MBEDTLS_PSA_HASH_OPERATION_INIT
+
+typedef mbedtls_psa_cipher_operation_t
+        mbedtls_transparent_test_driver_cipher_operation_t;
+
+typedef struct {
+    unsigned int initialised : 1;
+    mbedtls_transparent_test_driver_cipher_operation_t ctx;
+} mbedtls_opaque_test_driver_cipher_operation_t;
+
+#define MBEDTLS_TRANSPARENT_TEST_DRIVER_CIPHER_OPERATION_INIT \
+     MBEDTLS_PSA_CIPHER_OPERATION_INIT
+
+#define MBEDTLS_OPAQUE_TEST_DRIVER_CIPHER_OPERATION_INIT \
+     { 0, MBEDTLS_TRANSPARENT_TEST_DRIVER_CIPHER_OPERATION_INIT }
+
+#endif /* PSA_CRYPTO_DRIVER_TEST */
+
+#endif /* PSA_CRYPTO_BUILTIN_H */