forked from espressif/esp-idf
1. move chip-specific code(e.g. encryption) into IDF_TARGET directory 2. splict app-only code to idf directory which won't be compiled into bootloader
Bootloader Support Component ============================ Overview -------- "Bootloader support" contains APIs which are used by the bootloader but are also needed for the main app. Code in this component needs to be aware of being executed in a bootloader environment (no RTOS available, BOOTLOADER_BUILD macro set) or in an esp-idf app environment (RTOS running, need locking support.)