AM261x MCU+ SDK  10.00.01
SBL SD

Introduction

This bootloader does SOC initializations and attempts to boot a multicore appimage file named "app" present in the first FAT partition found in the connected SD card. The file can be copied to the SD card by connecting it to the host PC using a card reader. Make sure that it is named "app" without any file extension. If the card is new, make sure that it is formatted with FAT32/16.

If a multicore appimage file is found at the location, the SBL reads the file into a buffer and parses it. Each core is then initialized, application image is loaded, entry points are set and the core is released from reset. For more on bootflow/bootloaders, please refer Understanding the bootflow and bootloaders

Note
RPRC image booting using SBL would be deprecated from SDK 11.00 release onwards. MCELF would be the default boot image format supported by SBL going forward.

SBL SD MULTICORE ELF

To parse and load an mcelf file via SD bootloader, use the project examples/drivers/boot/sbl_sd_multicore_elf

When an mcelf image is received, the SBL parses it, loads each segment to its respective core. Then the core is released from reset.

The steps to run the example is same irrespective of the image format.

Supported Combinations

Steps to Run the Example

Since this is a bootloader, the example will be run every time you boot an application using this example. It is run from an SD card unlike other examples which are usually loaded with CCS. Nevertheless, you can build this example like you do for the others using makefile or build it via CCS by importing as a project.

  • When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
  • When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)
  • Refer to the page Basic steps to flash files to flash this bootloader along with the application to boot.

See Also

BOOTLOADER

Sample Output