projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
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1 | SPEAr ARM Linux Overview |
| 2 | ========================== | |
| 3 | ||
| 4 | Introduction | |
| 5 | ------------ | |
| 6 | ||
| 7 | SPEAr (Structured Processor Enhanced Architecture). | |
| 8 | weblink : http://www.st.com/spear | |
| 9 | ||
| 10 | The ST Microelectronics SPEAr range of ARM9/CortexA9 System-on-Chip CPUs are | |
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11 | supported by the 'spear' platform of ARM Linux. Currently SPEAr1310, |
| 12 | SPEAr1340, SPEAr300, SPEAr310, SPEAr320 and SPEAr600 SOCs are supported. | |
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13 | |
| 14 | Hierarchy in SPEAr is as follows: | |
| 15 | ||
| 16 | SPEAr (Platform) | |
| 17 | - SPEAr3XX (3XX SOC series, based on ARM9) | |
| 18 | - SPEAr300 (SOC) | |
| c5fa4fdc | 19 | - SPEAr300 Evaluation Board |
| fc0c195a | 20 | - SPEAr310 (SOC) |
| c5fa4fdc | 21 | - SPEAr310 Evaluation Board |
| fc0c195a | 22 | - SPEAr320 (SOC) |
| c5fa4fdc | 23 | - SPEAr320 Evaluation Board |
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24 | - SPEAr6XX (6XX SOC series, based on ARM9) |
| 25 | - SPEAr600 (SOC) | |
| c5fa4fdc | 26 | - SPEAr600 Evaluation Board |
| fc0c195a | 27 | - SPEAr13XX (13XX SOC series, based on ARM CORTEXA9) |
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28 | - SPEAr1310 (SOC) |
| 29 | - SPEAr1310 Evaluation Board | |
| 30 | - SPEAr1340 (SOC) | |
| 31 | - SPEAr1340 Evaluation Board | |
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32 | |
| 33 | Configuration | |
| 34 | ------------- | |
| 35 | ||
| 36 | A generic configuration is provided for each machine, and can be used as the | |
| 37 | default by | |
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38 | make spear13xx_defconfig |
| 39 | make spear3xx_defconfig | |
| 40 | make spear6xx_defconfig | |
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41 | |
| 42 | Layout | |
| 43 | ------ | |
| 44 | ||
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45 | The common files for multiple machine families (SPEAr3xx, SPEAr6xx and |
| 46 | SPEAr13xx) are located in the platform code contained in arch/arm/plat-spear | |
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47 | with headers in plat/. |
| 48 | ||
| 49 | Each machine series have a directory with name arch/arm/mach-spear followed by | |
| 50 | series name. Like mach-spear3xx, mach-spear6xx and mach-spear13xx. | |
| 51 | ||
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52 | Common file for machines of spear3xx family is mach-spear3xx/spear3xx.c, for |
| 53 | spear6xx is mach-spear6xx/spear6xx.c and for spear13xx family is | |
| 54 | mach-spear13xx/spear13xx.c. mach-spear* also contain soc/machine specific | |
| 55 | files, like spear1310.c, spear1340.c spear300.c, spear310.c, spear320.c and | |
| 56 | spear600.c. mach-spear* doesn't contains board specific files as they fully | |
| 57 | support Flattened Device Tree. | |
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58 | |
| 59 | ||
| 60 | Document Author | |
| 61 | --------------- | |
| 62 | ||
| 10d8935f | 63 | Viresh Kumar <viresh.linux@gmail.com>, (c) 2010-2012 ST Microelectronics |