TBB: add PolarSSL based authentication module

This patch implements an authentication module based on the
PolarSSL library (v1.3.9) to verify the Chain of Trust when
Trusted Boot is enabled.

PolarSSL sources must be fetched separately. The POLARSSL_DIR
build option may be used to indicate the path to the PolarSSL
main directory (this directory must contain the 'include' and
'library' subdirectories).

To be able to build PolarSSL sources as a part of the Trusted
Firmware build process, the DISABLE_PEDANTIC flag in polarssl.mk
will tell the build system to remove the -pedantic option from
the CFLAGS.

Inclusion of PolarSSL increases the memory requirements of the BL1
and BL2 images. The following are the changes made to the FVP and
Juno platforms to cater for this when TRUSTED_BOARD_BOOT is
defined:

Changes on FVP:

  - BL1 and BL2 stacks have been increased to 4 KB
  - BL1(rw) section has been increased to 32 KB.
  - BL2 memory region has been increased to 112 KB

Changes on Juno:

  - BL1 and BL2 stacks have been increased to 4 KB
  - BL1(rw) section has been increased to 32 KB.
  - Trusted ROM region in Flash has been increased to 128 KB.
  - BL2 memory region has been increased to 116 KB

Change-Id: Ie87d80d43408eb6239c4acd0ec5ab2120e4e9e80

1 files changed, 85 insertions, 0 deletions

diff --git a/common/auth/polarssl/polarssl_config.h b/common/auth/polarssl/polarssl_config.h
new file mode 100644
index 00000000..531e0845
--- /dev/null
+++ b/common/auth/polarssl/polarssl_config.h
@@ -0,0 +1,85 @@
+/*
+ * 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 __POLARSSL_CONFIG_H__
+#define __POLARSSL_CONFIG_H__
+
+
+/*
+ * 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
+
+#define POLARSSL_RSA_C
+#define POLARSSL_SHA1_C
+#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"
+
+#endif /* __POLARSSL_CONFIG_H__ */