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mbedtls: Allow external mem alloc for ESP32-S2

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Closes https://github.com/espressif/esp-idf/pull/6998
Closes IDFGH-5226
This commit is contained in:
Marcel Kottmann 2021-05-07 20:38:49 +02:00 committed by bot
parent e660e32a6e
commit 4c8ae4fd56
1 changed files with 7 additions and 2 deletions
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9
components/mbedtls/Kconfig
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@ -15,17 +15,22 @@ menu "mbedTLS"
mbedtls_platform_set_calloc_free() function
- Internal IRAM memory wherever applicable else internal DRAM
Recommended mode here is always internal, since that is most preferred
Recommended mode here is always internal (*), since that is most preferred
from security perspective. But if application requirement does not
allow sufficient free internal memory then alternate mode can be
selected.
(*) In case of ESP32-S2/ESP32-S3, hardware allows encryption of external
SPIRAM contents provided hardware flash encryption feature is enabled.
In that case, using external SPIRAM allocation strategy is also safe choice
from security perspective.
config MBEDTLS_INTERNAL_MEM_ALLOC
bool "Internal memory"
config MBEDTLS_EXTERNAL_MEM_ALLOC
bool "External SPIRAM"
depends on ESP32_SPIRAM_SUPPORT
depends on SPIRAM_USE_CAPS_ALLOC || SPIRAM_USE_MALLOC
config MBEDTLS_DEFAULT_MEM_ALLOC
bool "Default alloc mode"