lpass(Low Power Audio SubSystem) 低功耗音频子系统

Qualcomm LPASS QDSP6v5 Peripheral Image Loader

pil-qdsp6v5-lpass is a peripheral image loader (PIL) driver. It is used for
loading QDSP6v5 (Hexagon) firmware images for Low Power Audio Subsystems
into memory and preparing the subsystem’s processor to execute code.

参考资料 http://www.wdic.org/w/WDIC/MSM8960

MSM = Mobile Stattion Modem 集成芯片，包括通信处理器和应用处理器
MDM = Mobile Data Modem 通信处理器，高通提供给iPhone的就是这种
APQ = Application Processor Qualcomm 纯应用处理器，需要和MDM配合，才能组成手机系统

ARM-based mobile phone Dual-Mode Subscriber Station (DMSS)
Advanced Mode Subscriber Software (AMSS)

http://en.wikipedia.org/wiki/REX_OS

EDL (紧急下载模式）
adb reboot edl （使手机进入pbl紧急下载模式）
adb reboot dload （进入sbl1普通下载模式）

高通缩略语