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Introduction Note to customers: Please provide whatever feedback you can on CFE and this document. Our goals are to make this software useful to most customers, particularly those working on new designs Broadcom BCM91280E CFE do not already have firmware to port.


If you have comments, send them to us at sibyte-public broadcom. CFE can be used early in the development of designs using Broadcom processors to do bringup, and later be used to bootstrap the Broadcom BCM91280E CFE in a production environment. CFE was designed with the following goals: It should be simple. Boot code isnt supposed to be very fancy.

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It should be easy to bring up and dependable. The keep it simple principle was applied liberally in the design of CFE. It should support a variety of bootstrap devices, boot file systems, and console interfaces. It should be easy to add new device support It should be modular, and easy to remove unnecessary features It should serve as a collection Broadcom BCM91280E CFE examples of simple device drivers for the integrated peripherals on Broadcom processors. Therefore, there are certain non-goals in CFE: It is not designed to be portable to non-MIPS platforms.

Cfe brcm cfe source code -

However, it is not that difficult to port to non-MIPS platforms either most architecture-specific code and constants are in a specific place, it is Broadcom BCM91280E CFE easy to add new boards and architectures to the build tree. Similarly, it is also not designed to become a firmware standard.

It is not meant to be a hardware-abstraction layer or BIOS usable by the operating system for normal device access. All rights reserved.

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This software is furnished under license and may be used and copied only in accordance with the following terms and conditions. No title or ownership is transferred hereby.

The "Broadcom Corporation" name may not be used to endorse or promote products derived from this software without the prior written permission of Broadcom Corporation. Added Justins comments Filled out some of the empty sections, first release of CFE source to customers Updated to include changes Broadcom BCM91280E CFE version 0. Updated titles of referenced Broadcom documents. Broadcom BCM91280E CFE

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Updated copyright year in license information section. Information you Broadcom BCM91280E CFE into the computer commands, answers to prompts 3 Broadcom Corporation Common Firmware Environment CFE Functional Specification Bold comments Symbols in italics Special notes or caveats File names, structure and field names, argument names. Overview This chapter gives an overview of CFEs major features and internal subsystems.

The internals will be covered in greater detail in subsequent chapters. Supported platforms include: Once Broadcom BCM91280E CFE has completed, CFE is ready to load programs from the bootstrap device.

Runs with interrupts completely disabled. On multiprocessor Broadcom BCM91280E CFE, a spin lock is used to guard the entry point, allowing only one thread of execution into the firmware at a time.


CFE contains the following important features: * Easy to port to new SB are of interest: cfe/arch/mips/cpu/bcm cfe/arch/mips/board/bcme. Common Firmware Environment (CFE), pronounced as 'cafe', is a firmware interface and bootloader developed by Broadcom for bit and bit  Missing: BCME.

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