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11b80a7f11
feat(freertos): Place FreeRTOS in flash by default Closes IDF-12695 See merge request espressif/esp-idf!40579
79 lines
4.7 KiB
Plaintext
79 lines
4.7 KiB
Plaintext
# Linker fragment file for common FreeRTOS files (i.e., both "port_common.c" and "esp_additions/..."
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# Flash function placements are listed per source file, in the order that they appear in the source file.
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[mapping:freertos_common]
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archive: libfreertos.a
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entries:
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if FREERTOS_IN_IRAM = y:
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* (noflash_text) # All FreeRTOS functions to IRAM
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else:
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* (default) # All FreeRTOS functions to Flash
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# ------------------------------------------------------------------------------------------------------------------
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# esp_additions/private_include/freertos_tasks_c_additions.h
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# Placement Rules (FreeRTOS API Additions):
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# - Default: Place all functions in flash.
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# - CONFIG_FREERTOS_IN_IRAM: Place all functions in internal RAM for performance optimization.
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# - xTaskIncrementTickOtherCores is always placed in internal RAM for better performance
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# Placement Rules (Task Snapshot):
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# - Default: Place all functions in flash.
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# - CONFIG_FREERTOS_IN_IRAM: Place all functions in internal RAM for performance optimization.
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# - vTaskGetSnapshot is omitted on purpose as it is used to by the Task Watchdog (TWDT) interrupt handler, we want
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# to always keep it in IRAM unless CONFIG_FREERTOS_PLACE_ISR_FUNCTIONS_INTO_FLASH is enabled in which case
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# we can place it in flash.
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#
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# ------------------------------------------------------------------------------------------------------------------
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if FREERTOS_SMP = n && FREERTOS_UNICORE = n:
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tasks:xTaskIncrementTickOtherCores (noflash_text)
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if FREERTOS_PLACE_ISR_FUNCTIONS_INTO_FLASH = n:
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tasks:vTaskGetSnapshot (noflash_text)
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# ------------------------------------------------------------------------------------------------------------------
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# idf_additions.c
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# Placement Rules: Functions always in flash as they are never called from an ISR
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# ------------------------------------------------------------------------------------------------------------------
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idf_additions (default)
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# ------------------------------------------------------------------------------------------------------------------
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# idf_additions_event_groups.c
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# Placement Rules: Functions always in flash as they are never called from an ISR
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# ------------------------------------------------------------------------------------------------------------------
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idf_additions_event_groups (default)
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# ------------------------------------------------------------------------------------------------------------------
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# app_startup.c
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# Placement Rules: Functions always in flash as they are never called from an ISR
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# ------------------------------------------------------------------------------------------------------------------
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app_startup (default) # Place functions (but not Data and BSS) to flash
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# ------------------------------------------------------------------------------------------------------------------
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# heap_idf.c
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# Placement Rules:
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# - Default: Place all functions in flash.
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# - CONFIG_FREERTOS_IN_IRAM: Place all functions in internal RAM for performance optimization.
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# ------------------------------------------------------------------------------------------------------------------
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if FREERTOS_IN_IRAM = y:
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heap_idf (noflash_text) # All functions to internal RAM
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# ------------------------------------------------------------------------------------------------------------------
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# port_common.c
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# Placement Rules:
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# - Default: Place all functions in flash.
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# - CONFIG_FREERTOS_IN_IRAM: Place all functions in internal RAM for performance optimization.
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# ------------------------------------------------------------------------------------------------------------------
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if FREERTOS_IN_IRAM = y:
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port_common (noflash_text) # All functions to internal RAM
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# ------------------------------------------------------------------------------------------------------------------
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# port_systick.c
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# - Place the entire port_systick in IRAM. It contains the tick ISR and its related functions, which are
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# performance-critical and must always be in IRAM.
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# - For RISC-V targets, the timer setup functions can be placed in Flash. For Xtensa targets this is not possible
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# as the timer setup function is called from xPortStartScheduler() which is in IRAM.
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# ------------------------------------------------------------------------------------------------------------------
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port_systick (noflash_text)
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if IDF_TARGET_ARCH_RISCV = y:
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port_systick:vPortSetupTimer (default)
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if FREERTOS_SYSTICK_USES_SYSTIMER = y:
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port_systick:vSystimerSetup (default)
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