projects / linux-block.git / blame
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1 | ======================== |
| 2 | SPEAr ARM Linux Overview | |
| 3 | ======================== | |
| fc0c195a | 4 | |
| 5 | Introduction | |
| 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 | |
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12 | supported by the 'spear' platform of ARM Linux. Currently SPEAr1310, |
| 13 | SPEAr1340, SPEAr300, SPEAr310, SPEAr320 and SPEAr600 SOCs are supported. | |
| fc0c195a | 14 | |
| 15 | Hierarchy in SPEAr is as follows: | |
| 16 | ||
| 17 | SPEAr (Platform) | |
| 38cbfed2 | 18 | |
| fc0c195a | 19 | - SPEAr3XX (3XX SOC series, based on ARM9) |
| 20 | - SPEAr300 (SOC) | |
| c5fa4fdc | 21 | - SPEAr300 Evaluation Board |
| fc0c195a | 22 | - SPEAr310 (SOC) |
| c5fa4fdc | 23 | - SPEAr310 Evaluation Board |
| fc0c195a | 24 | - SPEAr320 (SOC) |
| c5fa4fdc | 25 | - SPEAr320 Evaluation Board |
| fc0c195a | 26 | - SPEAr6XX (6XX SOC series, based on ARM9) |
| 27 | - SPEAr600 (SOC) | |
| c5fa4fdc | 28 | - SPEAr600 Evaluation Board |
| fc0c195a | 29 | - SPEAr13XX (13XX SOC series, based on ARM CORTEXA9) |
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30 | - SPEAr1310 (SOC) |
| 31 | - SPEAr1310 Evaluation Board | |
| 32 | - SPEAr1340 (SOC) | |
| 33 | - SPEAr1340 Evaluation Board | |
| fc0c195a | 34 | |
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35 | Configuration |
| 36 | ------------- | |
| fc0c195a | 37 | |
| 38 | A generic configuration is provided for each machine, and can be used as the | |
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39 | default by:: |
| 40 | ||
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41 | make spear13xx_defconfig |
| 42 | make spear3xx_defconfig | |
| 43 | make spear6xx_defconfig | |
| fc0c195a | 44 | |
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45 | Layout |
| 46 | ------ | |
| fc0c195a | 47 | |
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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 | |
| fc0c195a | 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 | ||
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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. | |
| fc0c195a | 61 | |
| 62 | ||
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63 | Document Author |
| 64 | --------------- | |
| fc0c195a | 65 | |
| da89947b | 66 | Viresh Kumar <vireshk@kernel.org>, (c) 2010-2012 ST Microelectronics |