Steffen Yount

Add CMake functions for time_critical section placement of target sources

6

I've broken out from my original PR for #2653 as @will-v-pi suggested. This change introduces two new CMake functions: ``` pico_sections_time_critical(TARGET [SOURCES]) ``` Which will prefix the target's object file...

Facilitate RP2040 XIP-cache-as-RAM feature, reclaiming bus bandwidth for time critical instructions in COPY_TO_RAM and NO_FLASH builds

10

The pico-sdk and RP2040 hardware provide a few facilities that improve performance by moving runtime code and data into SRAM: 1. "pico/platform/sections.h" currently provides the "__not_in_flash", "__not_in_flash_func", and "__time_critical_func" macros...

Facilitate RP2040 XIP-cache-as-RAM feature

6

The pico-sdk and RP2040 hardware provide a few facilities that improve performance by moving runtime code and data into SRAM: 1. "pico/platform/sections.h" currently provides the "__not_in_flash", "__not_in_flash_func", and "__time_critical_func" macros...