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DM644x DVEVM SRAM

BMillikan
Intellectual 870 points

How do I access the DVEVM SRAM using linux from the ARM?  Is there a driver available already? 

Brian

  • 0
    TI__Mastermind 41665 points

    I don't believe there is a driver for this, assuming you mean the 4MB SRAM on CS2, generally one of the flashes (NAND or NOR) would be selected here in place of the SRAM based on the J4 jumper if you were booting Linux, and since it is not adviseable to change the jumper setting while the board is powered up the SRAM is generally inaccessible once Linux is running. On the positive side a driver to access this would be relatively simple if you were booting Linux through something other than flash, as this is just regular RAM so you could read or write to 4MB of space from 0x02000000.