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ab1794f576
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>
40 lines
816 B
C
40 lines
816 B
C
/*
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* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <debug.h>
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/* mbed TLS headers */
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#include <mbedtls/memory_buffer_alloc.h>
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#include <mbedtls/platform.h>
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/*
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* mbed TLS heap
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*/
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#if (TF_MBEDTLS_KEY_ALG_ID == TF_MBEDTLS_ECDSA)
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#define MBEDTLS_HEAP_SIZE (14*1024)
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#elif (TF_MBEDTLS_KEY_ALG_ID == TF_MBEDTLS_RSA)
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#define MBEDTLS_HEAP_SIZE (8*1024)
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#endif
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static unsigned char heap[MBEDTLS_HEAP_SIZE];
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/*
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* mbed TLS initialization function
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*/
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void mbedtls_init(void)
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{
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static int ready;
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if (!ready) {
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/* Initialize the mbed TLS heap */
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mbedtls_memory_buffer_alloc_init(heap, MBEDTLS_HEAP_SIZE);
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/* Use reduced version of snprintf to save space. */
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mbedtls_platform_set_snprintf(tf_snprintf);
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ready = 1;
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}
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}
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