UG266: Silicon Labs Gecko Bootloader User's Guide for GSDK 3.1 and Lower

PublishTime：2021-07-23

●This document describes the high-level implementation of the Silicon Labs Gecko Bootloader for EFM32 and EFR32 Series 1 and Series 2 microcontrollers, SoCs (System on Chips) and NCPs (Network Co-Processors), and provides information on different aspects of configuring the Gecko Bootloader. If you are not familiar with the basic principles of performing a firmware upgrade or want more information about upgrade image files, refer to UG103.6: Bootloader Fundamentals.
●KEY POINTS:
■Describes the Gecko Bootloader components.
■Summarizes how the Gecko Bootloader performs application upgrades and bootloader upgrades.
■Reviews how to create customized bootloaders in Simplicity Studio.
■Discusses the key configuration changes for various bootloader types.
■Describes Gecko Bootloader security features and discusses how to use them.
●The Silicon Labs Gecko Bootloader is a common bootloader for all the newer MCUs and wireless MCUs from Silicon Labs. The Gecko Bootloader can be configured to perform a variety of functions, from device initialization to firmware upgrades. Key features of the bootloader are:
■Useable across Silicon Labs Gecko microcontroller and wireless microcontroller families
■In-field upgradeable
■Configurable
■Enhanced security features, including:
■Secure Boot: When Secure Boot is enabled, the bootloader enforces cryptographic signature verification of the application image on every boot, using asymmetric cryptography. This ensures that the application was created and signed by a trusted party.
■Signed upgrade image file: The Gecko Bootloader supports enforcing cryptographic signature verification of the upgrade image file. This allows the bootloader and application to verify that the application or bootloader upgrade comes from a trusted source before starting the upgrade process, ensuring that the image file was created and signed by a trusted party.
■Encrypted upgrade image file: The image file can also be encrypted to prevent eavesdroppers from acquiring the plaintext firmware image.

Brand of Product：	Silicon Labs
Part#：	EFR32 、 EFR32 Series 、 EFM32 、 Series 1 、 Series 2 、 EFR32xG22 、 EFR32xG21 、 EFR32xG1 、 EFR32xG12 More Part#
Product Category：	microcontrollers More
Application：	More
Data Type：	User's Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2021/07/01
Version Number：	Rev. 1.7
Data Encoding：	UG266
Data Size：	2.7 MB

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