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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/Documentation/arm/SPEAr/overview.txt
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			SPEAr ARM Linux Overview

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			==========================

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Introduction

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------------

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  SPEAr (Structured Processor Enhanced Architecture).

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  weblink : http://www.st.com/spear

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  The ST Microelectronics SPEAr range of ARM9/CortexA9 System-on-Chip CPUs are

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  supported by the 'spear' platform of ARM Linux. Currently SPEAr300,

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  SPEAr310, SPEAr320 and SPEAr600 SOCs are supported. Support for the SPEAr13XX

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  series is in progress.

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  Hierarchy in SPEAr is as follows:

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  SPEAr (Platform)

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	- SPEAr3XX (3XX SOC series, based on ARM9)

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		- SPEAr300 (SOC)

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			- SPEAr300_EVB (Evaluation Board)

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		- SPEAr310 (SOC)

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			- SPEAr310_EVB (Evaluation Board)

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		- SPEAr320 (SOC)

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			- SPEAr320_EVB (Evaluation Board)

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	- SPEAr6XX (6XX SOC series, based on ARM9)

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		- SPEAr600 (SOC)

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			- SPEAr600_EVB (Evaluation Board)

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	- SPEAr13XX (13XX SOC series, based on ARM CORTEXA9)

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		- SPEAr1300 (SOC)

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  Configuration

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  -------------

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  A generic configuration is provided for each machine, and can be used as the

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  default by

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	make spear600_defconfig

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	make spear300_defconfig

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	make spear310_defconfig

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	make spear320_defconfig

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  Layout

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  ------

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  The common files for multiple machine families (SPEAr3XX, SPEAr6XX and

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  SPEAr13XX) are located in the platform code contained in arch/arm/plat-spear

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  with headers in plat/.

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  Each machine series have a directory with name arch/arm/mach-spear followed by

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  series name. Like mach-spear3xx, mach-spear6xx and mach-spear13xx.

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  Common file for machines of spear3xx family is mach-spear3xx/spear3xx.c and for

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  spear6xx is mach-spear6xx/spear6xx.c. mach-spear* also contain soc/machine

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  specific files, like spear300.c, spear310.c, spear320.c and spear600.c.

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  mach-spear* also contains board specific files for each machine type.

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  Document Author

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  ---------------

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  Viresh Kumar, (c) 2010 ST Microelectronics

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