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CMEM in the sys/bios

gao weidong
Intellectual 520 points

Other Parts Discussed in Thread: OMAPL138, OMAP-L138

hello,I use sys/bios in omapl138 ARM side.however I don't know how to communicate with dsp.      CMEM as a component in the linux and wince products,whether sys/bios also use it.  where to download it. please help me .

  • 0
    Genius 4330 points

    Hi

       The CMEM package will be found under the linux SDK, just download the linux SDK for your chip.

  • 0
    TI__Genius 17205 points

    CMEM is not supported on SYS/BIOS.  CMEM was mainly created to allocate physically contiguous memory on systems where that's not natively supported (e.g. Linux/WinCE, where malloc() returns non-physically contiguous virtual memory).  All memory allocated in a SYS/BIOS system is already physically contiguous.

    For managing memory between SYS/BIOS-ARM and SYS/BIOS-DSP on an OMAP-L138 device, you might look at the IPC product.  There you'll find cross-core memory allocation support (e.g. HeapBufMP) where, for example, you could alloc memory on one side and free it on the other if you want.

    Alternatively, you can just carve off some memory and manage it yourself.

    Chris