The bootloader is a program that runs from ROM at power-on and loads a boot-image from a peripheral to the internal RAM of the C5535 DSP. It is always invoked after power-on-reset. Once the transfer is completed, the bootloader switches control to the user code so that it is automatically executed.
In order to ensure that the code cannot be accessed and read outside of the system, the code residing externally may be encrypted. The bootloader is responsible for bootloading the code from an external device (I2C EEPROM, SPI EEPROM, SPI serial flash, MMC/SD, USB, and UART), decrypting it if necessary, and writing it into DSP memory (on-chip or off-chip).
the code residing externally may be encrypted. how to do ? 请能告知实现方法！ 谢谢！
