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Merge branch 'feature/heap-in-flash' into 'master'

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heap: Add a configuration that places all the heap component in flash

Closes IDF-7143 and IDF-2853

See merge request espressif/esp-idf!23050
This commit is contained in:
Guillaume Souchere
2023-04-13 14:38:15 +08:00
parent d8b8ab5d43 110aac240d
commit 48932ce910
13 changed files with 134 additions and 100 deletions
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1
docs/en/api-guides/performance/ram-usage.rst
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@@ -141,6 +141,7 @@ The following options will reduce IRAM usage of some ESP-IDF features:
- Disabling :ref:`CONFIG_SPI_MASTER_ISR_IN_IRAM` prevents spi_master interrupts from being serviced while writing to flash, and may otherwise reduce spi_master performance, but will save some IRAM.
- Setting :ref:`CONFIG_HAL_DEFAULT_ASSERTION_LEVEL` to disable assertion for HAL component will save some IRAM especially for HAL code who calls `HAL_ASSERT` a lot and resides in IRAM.
- Refer to sdkconfig menu ``Auto-detect flash chips`` and you can disable flash drivers which you don't need to save some IRAM.
- Enable :ref:`CONFIG_HEAP_PLACE_FUNCTION_INTO_FLASH`. Provided that :ref:`CONFIG_SPI_MASTER_ISR_IN_IRAM` is not enabled and the heap functions are not (incorrectly) used from ISRs, this option is safe to enable in all configuration.
.. only:: esp32

4
docs/en/api-guides/performance/size.rst
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@@ -452,13 +452,11 @@ VFS
:CONFIG_ESP_ROM_HAS_HAL_SYSTIMER: * Enabling :ref:`CONFIG_HAL_SYSTIMER_USE_ROM_IMPL` can reduce the IRAM usage and binary size by linking in the systimer HAL driver of ROM implementation.
:CONFIG_ESP_ROM_HAS_HAL_WDT: * Enabling :ref:`CONFIG_HAL_WDT_USE_ROM_IMPL` can reduce the IRAM usage and binary size by linking in the watchdog HAL driver of ROM implementation.
.. only:: CONFIG_ESP_ROM_HAS_HEAP_TLSF
Heap
@@@@
.. list::
* Enabling :ref:`CONFIG_HEAP_PLACE_FUNCTION_INTO_FLASH` can reduce the IRAM usage and binary size by placing the entirety of the heap functionalities in flash memory.
:CONFIG_ESP_ROM_HAS_HEAP_TLSF: * Enabling :ref:`CONFIG_HEAP_TLSF_USE_ROM_IMPL` can reduce the IRAM usage and binary size by linking in the TLSF library of ROM implementation.
Bootloader Size