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memory map in AM5xx

1330hayacool7102
Guru 10655 points

hi experts,

Could we change the memory map among A15/M4/DSP from the SW(http://software-dl.ti.com/processor-sw/esd/PROCESSOR-SDK-LINUX-AM57X/latest/index_FDS.html ) ?? if yes, could you give document on this??

Thanks

  • 0
    TI__Guru**** 161600 points

    Hi,

    I am not sure what do you mean by change the memory map among A15/M4/DSP...

    If you desire to change the physical addresses on which, for example, Cortex A15 sees other modules (as described in Table 2-1. L3_MAIN Memory Map), then you can't.

    Those are physical addresses and they cannot be changed. 

    Best Regards, 
    Yordan

  • 0 in reply to Yordan Kovachev
    Guru 10655 points

    hi Yordan,

    I am not sure what do you mean by change the memory map among A15/M4/DSP...
    > sorry for my unclear speaking, I mean

    the start address/range/size of DRAM assigned to A15 or M4 or DSP
    maybe we need to increase the memory for DSP to allocate more buffer....

    Thanks

  • 0 in reply to 1330hayacool7102
    TI__Guru**** 161600 points
    Hi
    Yes, it should be possible to modify the size of DRAM allocated for DSP applications.
    See the bios user guide in the SDK component sources.

    However, have in mind that you cannot set the start address to be the same as the start address seen from A15 (0x80000000). Also note that the beginning of the RAM is reserved for the kernel (see the definitions in beagle_x15.h & ti_armv7_common.h).

    Best Regards,
    Yordan