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67 lines
1.9 KiB
ReStructuredText
========================
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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 SPEAr1310,
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SPEAr1340, SPEAr300, SPEAr310, SPEAr320 and SPEAr600 SOCs are supported.
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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 Evaluation Board
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- SPEAr310 (SOC)
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- SPEAr310 Evaluation Board
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- SPEAr320 (SOC)
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- SPEAr320 Evaluation Board
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- SPEAr6XX (6XX SOC series, based on ARM9)
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- SPEAr600 (SOC)
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- SPEAr600 Evaluation Board
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- SPEAr13XX (13XX SOC series, based on ARM CORTEXA9)
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- SPEAr1310 (SOC)
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- SPEAr1310 Evaluation Board
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- SPEAr1340 (SOC)
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- SPEAr1340 Evaluation Board
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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 spear13xx_defconfig
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make spear3xx_defconfig
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make spear6xx_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, for
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spear6xx is mach-spear6xx/spear6xx.c and for spear13xx family is
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mach-spear13xx/spear13xx.c. mach-spear* also contain soc/machine specific
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files, like spear1310.c, spear1340.c spear300.c, spear310.c, spear320.c and
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spear600.c. mach-spear* doesn't contains board specific files as they fully
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support Flattened Device Tree.
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Document Author
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---------------
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Viresh Kumar <vireshk@kernel.org>, (c) 2010-2012 ST Microelectronics
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