• Mark Brown's avatar
    ASoC: SOF: Intel/IPC4: Support for external firmware libraries · b700672e
    Mark Brown authored
    Merge series from Peter Ujfalusi <peter.ujfalusi@linux.intel.com>:
    
    In IPC4 all DSP loadable executable is a 'library' containing modules. The main
    or basefw is also a library which contains multiple modules.
    IPC4 allows to use loadable libraries to extend the functionality of the booted
    basefw.
    
    This series adds support for loading external libraries in case they are needed
    by the loaded topology file.
    
    The libraries must be placed to a specific firmware directory (fw_lib_prefix),
    which is:
    intel/avs-lib|sof-ipc4-lib/ followed by the platform name and in case of
    community key use a 'community' directory.
    
    For example for upx-i11 (community key): intel/avs-lib/tgl/community is the
    default path.
    
    The name of the library should be the UUID of the module it contains since the
    library loading is going to look for the file as <module_UUID>.bin
    In case there is a need to bundle multiple modules into single library, symlinks
    can be used to point to the file:
    
    module_boundle.bin
    <UUID1>.bin -> module_boundle.bin
    <UUID2>.bin -> module_boundle.bin
    <UUID3>.bin -> module_boundle.bin
    
    But note that in this case all modules will be loaded to the DSP since only the
    whole library can be loaded, not individual modules.
    b700672e
jz4725b.c 18.7 KB