plat/arm: enlarge the BL2 size on Arm platforms when TBB is enabled

For Trusted Board Boot, BL2 needs more space to support the ECDSA
and ECDSA+RSA algorithms.

Change-Id: Ie7eda9a1315ce836dbc6d18d6588f8d17891a92d
Signed-off-by: Qixiang Xu <qixiang.xu@arm.com>

include/drivers/auth/mbedtls/mbedtls_config.h

@@ -76,12 +76,13 @@
 #define MBEDTLS_MPI_WINDOW_SIZE              2
 #define MBEDTLS_MPI_MAX_SIZE               256
 
-/* System headers required to build mbed TLS with the current configuration */
-#include <stdlib.h>
-
 /* Memory buffer allocator options */
 #define MBEDTLS_MEMORY_ALIGN_MULTIPLE        8
 
+#ifndef __ASSEMBLY__
+/* System headers required to build mbed TLS with the current configuration */
+#include <stdlib.h>
 #include "mbedtls/check_config.h"
+#endif
 
 #endif /* __MBEDTLS_CONFIG_H__ */

include/plat/arm/board/common/board_arm_def.h

@@ -71,7 +71,7 @@
  * little space for growth.
  */
 #if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL2_SIZE		0x1D000
+# define PLAT_ARM_MAX_BL2_SIZE		0x1E000
 #else
 # define PLAT_ARM_MAX_BL2_SIZE		0xF000
 #endif

plat/arm/board/juno/include/platform_def.h

@@ -12,6 +12,9 @@
 #include <board_css_def.h>
 #include <common_def.h>
 #include <css_def.h>
+#if TRUSTED_BOARD_BOOT
+#include <mbedtls_config.h>
+#endif
 #include <soc_css_def.h>
 #include <tzc400.h>
 #include <v2m_def.h>
@@ -106,7 +109,11 @@
  * little space for growth.
  */
 #if TRUSTED_BOARD_BOOT
-# define PLAT_ARM_MAX_BL2_SIZE		0x19000
+#if TF_MBEDTLS_KEY_ALG_ID == TF_MBEDTLS_RSA_AND_ECDSA
+# define PLAT_ARM_MAX_BL2_SIZE		0x1E000
+#else
+# define PLAT_ARM_MAX_BL2_SIZE		0x1A000
+#endif
 #else
 # define PLAT_ARM_MAX_BL2_SIZE		0xC000
 #endif