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98fd78437c
Also shrinks the "prefer internal" threshold to 8KB, any allocation larger than this will try PSRAM first. Change the mbedTLS config to use regular malloc() as well, instead of internal only. The default is set to internal-only due to to potential physical security issue of readout via PSRAM on the original ESP32. However, as MicroPython runs from plaintext flash and all other context is in the MP heap of PSRAM then it's hard to see how worsens physical security for MP. This work was funded through GitHub Sponsors. Signed-off-by: Angus Gratton <angus@redyak.com.au>
16 lines
568 B
Plaintext
16 lines
568 B
Plaintext
# MicroPython on ESP32, ESP IDF configuration with SPIRAM support
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CONFIG_SPIRAM=y
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CONFIG_SPIRAM_CACHE_WORKAROUND=y
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CONFIG_SPIRAM_IGNORE_NOTFOUND=y
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CONFIG_SPIRAM_USE_MALLOC=y
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# This is the threshold for preferring small allocations from internal memory
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# first, before failing over to PSRAM.
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CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=8192
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# SPIRAM increases the size of the firmware and overflows iram0_0_seg, due
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# to PSRAM bug workarounds. Apply some options to reduce the firmware size.
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CONFIG_COMPILER_OPTIMIZATION_SIZE=y
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CONFIG_FREERTOS_PLACE_FUNCTIONS_INTO_FLASH=y
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