AM261x MCU+ SDK: SBL SD

| AM261x MCU+ SDK 26.00.00 |

SBL SD

# Introduction

This bootloader does SOC initializations and attempts to boot a multicore application image 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 application image 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

# SBL SD MULTICORE ELF

For AM263x/AM263Px devices, use the Multicore ELF project of SBL SD

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.

# 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