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This chapter describes the booting functionality of the Public ROM Code, referred hereafter as ROM
Code. The booting functionality covers the following features:
•
Memory Booting – booting the device by starting code stored on permanent memories like
flash-memory or memory cards. This process is usually performed after either device cold or warm
reset.
•
Peripheral Booting – booting the device by downloading the executable code over a communication
interface like UART or Ethernet. This process is intended for flashing a device.
The device always starts up in secure mode. The ROM Code takes care of early initialization. The ROM
code switches the device into public mode; hence, the Public ROM Code provides run-time services for
cache maintenance.
This chapter does not cover in details the security related aspects. It is intended for all who design
systems based on this device, develop boot loader images and flashing tools.
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Topic
21.1 Introduction
21.2 Overview
21.3 Memory Map
21.4 Startup and Configuration
21.5 Booting
21.6 Fast Internal Booting
21.7 Memory Booting
21.8 Peripheral Booting
21.9 Image Format
21.10 Image Execution
21.11 Services for HLOS Support
21.12 Tracing
SPRUGX9 – 15 April 2011
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Preliminary
ROM Code Memory and Peripheral Booting
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© 2011, Texas Instruments Incorporated
Chapter 21
SPRUGX9 – 15 April 2011
ROM Code Memory and Peripheral Booting
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