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Merge branch 'feature/unify_rtc_fast_mem_as_heap_config_across_chips' into 'master'

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esp_system: make rtc fast memory to heap configuration unified across chips

Closes IDF-2503

See merge request espressif/esp-idf!11693
This commit is contained in:
Angus Gratton
2020-12-29 11:41:05 +08:00
parent 2a5ac66a71 880a63b2e9
commit 1b0442b963
12 changed files with 32 additions and 55 deletions
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12
components/esp32/Kconfig
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@@ -769,16 +769,4 @@ menu "ESP32-specific"
This is possible due to handling of exceptions `LoadStoreError (3)` and `LoadStoreAlignmentError (9)`
Each unaligned read/write access will incur a penalty of maximum of 167 CPU cycles.
config ESP32_ALLOW_RTC_FAST_MEM_AS_HEAP
bool "Enable RTC fast memory for dynamic allocations"
default y
depends on FREERTOS_UNICORE
help
This config option allows to add RTC fast memory region to system heap with capability
similar to that of DRAM region but without DMA. This memory will be consumed first per
heap initialization order by early startup services and scheduler related code. Speed
wise RTC fast memory operates on APB clock and hence does not have much performance impact.
RTC fast memory is accessible to PRO cpu only and hence this is allowed for single core
configuration only for ESP32.
endmenu # ESP32-Specific