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301dacfb33
Configurable option to use IRAM as byte accessible memory (in single core mode) using load-store (non-word aligned and non-word size IRAM access specific) exception handlers. This allows to use IRAM for use-cases where certain performance penalty (upto 170 cpu cycles per load or store operation) is acceptable. Additional configuration option has been provided to redirect mbedTLS specific in-out content length buffers to IRAM (in single core mode), allows to save 20KB per TLS connection.
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <esp_attr.h>
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#include <esp_heap_caps.h>
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#include <sdkconfig.h>
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#include "esp_mem.h"
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#ifndef CONFIG_MBEDTLS_CUSTOM_MEM_ALLOC
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IRAM_ATTR void *esp_mbedtls_mem_calloc(size_t n, size_t size)
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{
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#ifdef CONFIG_MBEDTLS_INTERNAL_MEM_ALLOC
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return heap_caps_calloc(n, size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
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#elif CONFIG_MBEDTLS_EXTERNAL_MEM_ALLOC
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return heap_caps_calloc(n, size, MALLOC_CAP_SPIRAM|MALLOC_CAP_8BIT);
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#elif CONFIG_MBEDTLS_IRAM_8BIT_MEM_ALLOC
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#ifdef CONFIG_MBEDTLS_ASYMMETRIC_CONTENT_LEN
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if ((n*size) >= CONFIG_MBEDTLS_SSL_IN_CONTENT_LEN || (n*size) >= CONFIG_MBEDTLS_SSL_OUT_CONTENT_LEN) {
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#else
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if ((n*size) >= CONFIG_MBEDTLS_SSL_MAX_CONTENT_LEN) {
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#endif
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return heap_caps_calloc_prefer(n, size, 2, MALLOC_CAP_INTERNAL|MALLOC_CAP_IRAM_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
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} else {
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return heap_caps_calloc(n, size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
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}
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#else
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return calloc(n, size);
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#endif
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}
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IRAM_ATTR void esp_mbedtls_mem_free(void *ptr)
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{
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return heap_caps_free(ptr);
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}
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#endif /* !CONFIG_MBEDTLS_CUSTOM_MEM_ALLOC */
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