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authorAntonio Nino Diaz <antonio.ninodiaz@arm.com>2017-05-19 11:37:22 +0100
committerAntonio Nino Diaz <antonio.ninodiaz@arm.com>2017-05-24 10:47:05 +0100
commitab1794f57659a77ad66defbc7ea5cb8afb920b2f (patch)
tree76459c6bdabaa7a1627199be6f97650634e7f636 /include/drivers
parentda5241cb1591416d6aeba9f30ce395b58c97cb5d (diff)
mbedtls: Use `tf_snprintf` instead of `snprintf`
The Trusted Firmware uses a subset of the APIs provided by mbed TLS. This subset internally uses `snprintf`, but the only format specifier used is '%d', which is supported by `tf_snprintf`. This patch makes mbed TLS use `tf_snprintf` instead of `snprintf`, saving 3 KB in both debug and release builds when TBBR is enabled. Change-Id: I7f992a21015930d7c0f4660e7a28ceefd60b9597 Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Diffstat (limited to 'include/drivers')
-rw-r--r--include/drivers/auth/mbedtls/mbedtls_config.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/drivers/auth/mbedtls/mbedtls_config.h b/include/drivers/auth/mbedtls/mbedtls_config.h
index 7d8d17c3..22e75742 100644
--- a/include/drivers/auth/mbedtls/mbedtls_config.h
+++ b/include/drivers/auth/mbedtls/mbedtls_config.h
@@ -19,6 +19,8 @@
#define MBEDTLS_PLATFORM_MEMORY
#define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
+/* Prevent mbed TLS from using snprintf so that it can use tf_snprintf. */
+#define MBEDTLS_PLATFORM_SNPRINTF_ALT
#define MBEDTLS_PKCS1_V15
#define MBEDTLS_PKCS1_V21