TBB: add mbedTLS authentication related libraries

This patch adds the following mbedTLS based libraries:

* Cryptographic library

It is used by the crypto module to verify a digital signature
and a hash. This library relies on mbedTLS to perform the
cryptographic operations. mbedTLS sources must be obtained
separately.

Two key algorithms are currently supported:

    * RSA-2048
    * ECDSA-SECP256R1

The platform is responsible for picking up the required
algorithm by defining the 'MBEDTLS_KEY_ALG' variable in the
platform makefile. Available options are:

    * 'rsa' (for RSA-2048) (default option)
    * 'ecdsa' (for ECDSA-SECP256R1)

Hash algorithm currently supported is SHA-256.

* Image parser library

Used by the image parser module to extract the authentication
parameters stored in X509v3 certificates.

Change-Id: I597c4be3d29287f2f18b82846973afc142ee0bf0

2 files changed, 135 insertions, 0 deletions

diff --git a/include/drivers/auth/mbedtls/mbedtls_common.h b/include/drivers/auth/mbedtls/mbedtls_common.h
new file mode 100644
index 00000000..eb22e8ae
--- /dev/null
+++ b/include/drivers/auth/mbedtls/mbedtls_common.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __MBEDTLS_COMMON_H__
+#define __MBEDTLS_COMMON_H__
+
+void mbedtls_init(void);
+
+#endif /* __MBEDTLS_COMMON_H__ */
diff --git a/include/drivers/auth/mbedtls/mbedtls_config.h b/include/drivers/auth/mbedtls/mbedtls_config.h
new file mode 100644
index 00000000..8a000f00
--- /dev/null
+++ b/include/drivers/auth/mbedtls/mbedtls_config.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __MBEDTLS_CONFIG_H__
+#define __MBEDTLS_CONFIG_H__
+
+/*
+ * Key algorithms currently supported on mbedTLS libraries
+ */
+#define MBEDTLS_RSA			1
+#define MBEDTLS_ECDSA			2
+
+/*
+ * Configuration file to build PolarSSL with the required features for
+ * Trusted Boot
+ */
+
+#define POLARSSL_PLATFORM_MEMORY
+#define POLARSSL_PLATFORM_NO_STD_FUNCTIONS
+
+#define POLARSSL_PKCS1_V15
+#define POLARSSL_PKCS1_V21
+
+#define POLARSSL_X509_ALLOW_UNSUPPORTED_CRITICAL_EXTENSION
+#define POLARSSL_X509_CHECK_KEY_USAGE
+#define POLARSSL_X509_CHECK_EXTENDED_KEY_USAGE
+
+#define POLARSSL_ASN1_PARSE_C
+#define POLARSSL_ASN1_WRITE_C
+
+#define POLARSSL_BASE64_C
+#define POLARSSL_BIGNUM_C
+
+#define POLARSSL_ERROR_C
+#define POLARSSL_MD_C
+
+#define POLARSSL_MEMORY_BUFFER_ALLOC_C
+#define POLARSSL_OID_C
+
+#define POLARSSL_PK_C
+#define POLARSSL_PK_PARSE_C
+#define POLARSSL_PK_WRITE_C
+
+#define POLARSSL_PLATFORM_C
+
+#if (MBEDTLS_KEY_ALG_ID == MBEDTLS_ECDSA)
+#define POLARSSL_ECDSA_C
+#define POLARSSL_ECP_C
+#define POLARSSL_ECP_DP_SECP256R1_ENABLED
+#elif (MBEDTLS_KEY_ALG_ID == MBEDTLS_RSA)
+#define POLARSSL_RSA_C
+#endif
+
+#define POLARSSL_SHA256_C
+
+#define POLARSSL_VERSION_C
+
+#define POLARSSL_X509_USE_C
+#define POLARSSL_X509_CRT_PARSE_C
+
+/* MPI / BIGNUM options */
+#define POLARSSL_MPI_WINDOW_SIZE              2
+#define POLARSSL_MPI_MAX_SIZE               256
+
+/* Memory buffer allocator options */
+#define POLARSSL_MEMORY_ALIGN_MULTIPLE        8
+
+#include "polarssl/check_config.h"
+
+/* System headers required to build mbedTLS with the current configuration */
+#include <stdlib.h>
+
+#endif /* __MBEDTLS_CONFIG_H__ */