1======================== 2SPEAr ARM Linux Overview 3======================== 4 5Introduction 6------------ 7 8 SPEAr (Structured Processor Enhanced Architecture). 9 weblink : http://www.st.com/spear 10 11 The ST Microelectronics SPEAr range of ARM9/CortexA9 System-on-Chip CPUs are 12 supported by the 'spear' platform of ARM Linux. Currently SPEAr1310, 13 SPEAr1340, SPEAr300, SPEAr310, SPEAr320 and SPEAr600 SOCs are supported. 14 15 Hierarchy in SPEAr is as follows: 16 17 SPEAr (Platform) 18 19 - SPEAr3XX (3XX SOC series, based on ARM9) 20 - SPEAr300 (SOC) 21 - SPEAr300 Evaluation Board 22 - SPEAr310 (SOC) 23 - SPEAr310 Evaluation Board 24 - SPEAr320 (SOC) 25 - SPEAr320 Evaluation Board 26 - SPEAr6XX (6XX SOC series, based on ARM9) 27 - SPEAr600 (SOC) 28 - SPEAr600 Evaluation Board 29 - SPEAr13XX (13XX SOC series, based on ARM CORTEXA9) 30 - SPEAr1310 (SOC) 31 - SPEAr1310 Evaluation Board 32 - SPEAr1340 (SOC) 33 - SPEAr1340 Evaluation Board 34 35Configuration 36------------- 37 38 A generic configuration is provided for each machine, and can be used as the 39 default by:: 40 41 make spear13xx_defconfig 42 make spear3xx_defconfig 43 make spear6xx_defconfig 44 45Layout 46------ 47 48 The common files for multiple machine families (SPEAr3xx, SPEAr6xx and 49 SPEAr13xx) are located in the platform code contained in arch/arm/plat-spear 50 with headers in plat/. 51 52 Each machine series have a directory with name arch/arm/mach-spear followed by 53 series name. Like mach-spear3xx, mach-spear6xx and mach-spear13xx. 54 55 Common file for machines of spear3xx family is mach-spear3xx/spear3xx.c, for 56 spear6xx is mach-spear6xx/spear6xx.c and for spear13xx family is 57 mach-spear13xx/spear13xx.c. mach-spear* also contain soc/machine specific 58 files, like spear1310.c, spear1340.c spear300.c, spear310.c, spear320.c and 59 spear600.c. mach-spear* doesn't contains board specific files as they fully 60 support Flattened Device Tree. 61 62 63Document Author 64--------------- 65 66 Viresh Kumar <vireshk@kernel.org>, (c) 2010-2012 ST Microelectronics 67