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README.android

      1 Default (and possibly architecture dependents) HAL modules go here. 
      2 
      3 
      4 libhardware.so eventually should contain *just* the HAL hub
      5 (hardware.c), everything in it should be rewritten as modules.
      6 
      7 Modules are .so in /system/libs/hw/ and have a well defined naming
      8 convention:
      9 
     10     /system/libs/hw/<*_HARDWARE_MODULE_ID>.<ro.product.board>.so
     11     /system/libs/hw/<*_HARDWARE_MODULE_ID>.<ro.board.platform>.so
     12     /system/libs/hw/<*_HARDWARE_MODULE_ID>.<ro.arch>.so
     13     /system/libs/hw/<*_HARDWARE_MODULE_ID>.default.so
     14 
     15 They also have a well defined interface which lives in include/hardware/.
     16 
     17 A module can have several variants: "default", "arch" and "board", and they're
     18 loaded in the "board", "arch" and "default" order.
     19 The source code for the "board" variant, usually lives under partners/...
     20 
     21 The source code for "default" and "arch" would usually
     22 live under hardware/modules/.
     23 
     24