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changes.mady.by.user Z-Yogomaya Maharana

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changes.mady.by.user Ashraf Bhanu Kothapeta

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  • PSM (Persistent Storage Manager) component is responsible for the storage of default/system configurations.
  • Provides software interfaces and abstractions to read/write variables stored in persistent storage and read factory config variables.
  • PSM holds mainly parameters related to hardware configuration.
  • In dual processor architecture a process running in peer processor can access PSM DB over DBUS.
  • All defaults/system configuration which are not modified during runtime are part of PSM.
  • PSM should be up and running for normal configuration of RDKB unit.
  • For WiFi initialization, PSM holds all default values of OEM specific custom parameters which is fetched through PSM HAL.

Architecture

 

draw.io Diagram
diagramNameArchitectural view of PSM sub-system diagram.drawio
revision1

Figure 1 - Architectural view of PSM sub-system

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Configuration files are saved as below on the device:

  • /fss/gw/usr/ccsp/config/bbhm_def_cfg.xml
  • /nvram/bbhm_bak_cfg.xml
  • /nvram/bbhm_cur_cfg.xml

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