mbedtls: Namespace for TF specific macros

An earlier patch (arm-trusted-firmware#874) migrated MBEDTLS_ suffixed
macros to have a TBBR_ suffix to avoid any potential clash with future
mbedtls macros.

But on reflection the TBBR_ suffix could be confusing as the macros
are used to drive TF-specific configuration of mbedtls. As such
this patch migrates these macros from TBBR_suffix to TF_MBEDTLS_
suffix which more accurately conveys their use.

Change-Id: Ic87642b653ceeaa03d62f724976abd5e12e867d4
Signed-off-by: David Cunado <david.cunado@arm.com>

drivers/auth/mbedtls/mbedtls_common.c

@@ -12,9 +12,9 @@
 /*
  * mbed TLS heap
  */
-#if (TBBR_KEY_ALG_ID == TBBR_ECDSA)
+#if (TF_MBEDTLS_KEY_ALG_ID == TF_MBEDTLS_ECDSA)
 #define MBEDTLS_HEAP_SIZE		(14*1024)
-#elif (TBBR_KEY_ALG_ID == TBBR_RSA)
+#elif (TF_MBEDTLS_KEY_ALG_ID == TF_MBEDTLS_RSA)
 #define MBEDTLS_HEAP_SIZE		(8*1024)
 #endif
 static unsigned char heap[MBEDTLS_HEAP_SIZE];

drivers/auth/mbedtls/mbedtls_crypto.mk

@@ -31,18 +31,18 @@ ifeq (${MBEDTLS_KEY_ALG},ecdsa)
     					ecp_curves.c				\
     					ecp.c					\
     					)
-    TBBR_KEY_ALG_ID		:=	TBBR_ECDSA
+    TF_MBEDTLS_KEY_ALG_ID	:=	TF_MBEDTLS_ECDSA
 else ifeq (${MBEDTLS_KEY_ALG},rsa)
     MBEDTLS_CRYPTO_SOURCES	+=	$(addprefix ${MBEDTLS_DIR}/library/,	\
     					rsa.c					\
     					)
-    TBBR_KEY_ALG_ID		:=	TBBR_RSA
+    TF_MBEDTLS_KEY_ALG_ID	:=	TF_MBEDTLS_RSA
 else
     $(error "MBEDTLS_KEY_ALG=${MBEDTLS_KEY_ALG} not supported on mbed TLS")
 endif
 
 # Needs to be set to drive mbed TLS configuration correctly
-$(eval $(call add_define,TBBR_KEY_ALG_ID))
+$(eval $(call add_define,TF_MBEDTLS_KEY_ALG_ID))
 
 BL1_SOURCES			+=	${MBEDTLS_CRYPTO_SOURCES}
 BL2_SOURCES			+=	${MBEDTLS_CRYPTO_SOURCES}

include/drivers/auth/mbedtls/mbedtls_config.h

@@ -9,8 +9,8 @@
 /*
  * Key algorithms currently supported on mbed TLS libraries
  */
-#define TBBR_RSA	1
-#define TBBR_ECDSA	2
+#define TF_MBEDTLS_RSA		1
+#define TF_MBEDTLS_ECDSA	2
 
 /*
  * Configuration file to build mbed TLS with the required features for
@@ -45,11 +45,11 @@
 
 #define MBEDTLS_PLATFORM_C
 
-#if (TBBR_KEY_ALG_ID == TBBR_ECDSA)
+#if (TF_MBEDTLS_KEY_ALG_ID == TF_MBEDTLS_ECDSA)
 #define MBEDTLS_ECDSA_C
 #define MBEDTLS_ECP_C
 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
-#elif (TBBR_KEY_ALG_ID == TBBR_RSA)
+#elif (TF_MBEDTLS_KEY_ALG_ID == TF_MBEDTLS_RSA)
 #define MBEDTLS_RSA_C
 #endif