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