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DDR Test in 66AK2E's MCSDK

Madhusudhan Seshadri
Prodigy 80 points

Hi,

Would like to know the whether there is DDR test program available in latest MCSDK either in Uboot or Linux?

If so, interested in exploring the ways and methods used in performing the DDR test?

Also, give pointer/references to the source code in latest MCSDK.

Thanks in Advance.

Best Regards,

Madhu

  • 0
    TI__Guru* 81335 points

    HI,
    Are you working on custom board or EVM? The MCSDK post example has some memory testing code.




    Thank you.

  • 0
    TI__Mastermind 43955 points
    Hi Madhu,

    You can use "mtest" command to test DDR at u-boot.
    Also you can use generic DDR memory test app to test at Linux.

    Refer to the follwing links.

    people.redhat.com/.../memtest.shtml
    e2e.ti.com/.../163494

    Regards,
    Shankari.
  • 0
    TI__Mastermind 43955 points

    Hi Madhusudhan,

    Yes, DDR test program is available in the latest MCSDK in u-boot.

    I would suggest you to boot the u-boot on 66AK2E EVM and check using the "help" command or "?" . You will find the following commands subjected to ddr tests.

    The following are the tests you can perform related to DDR

    Usage:
    ddr test <start_addr in hex> <end_addr in hex> - test DDR from start address to end address
    ddr compare <start_addr in hex> <end_addr in hex> <size in hex> - compare DDR data of (size) bytes from start address to end address
    ddr ecc_err <addr in hex> <bit_err in hex> - generate bit errors in DDR data at <addr>, the command will read a 32-bit data from <addr>, and write (data ^ bit_err) back to <addr>

    Madhu says said:
    Also, give pointer/references to the source code in latest MCSDK.

    In MCSDK, you will find it at "cmd_ddr3.c" located at arch/arm/cpu/armv7/keystone/

    Regards,

    Shankari.

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