• what is the difference between the device memory and the strongly-order memory ?

    Note: This was originally posted on 21st June 2011 at http://forums.arm.com

    Dear All,

           Both device and strongly-order memory are used to model memory-mapped peripherals and I/O locations in ARMv7 architecture.  And the architecture specification says…

  • ARMv7 "write buffer" issue

    Note: This was originally posted on 3rd July 2012 at http://forums.arm.com

    Hi All,

    I have a question about the "write buffer" for ARMv7 processor.

    Write buffer is explicitly described in TRM(tech reference manual) prior to ARMv6. E.g, how to enable…

  • [ARMv7] question about writel & barrier

    Hi Sirs,

    I got a question about the way Linux 3.18 defines the "writel()".

    In linux-3.18/arch/arm64/include/asm/io.h, it describes:

    /*

    * I/O memory access primitives. Reads are ordered relative to any

    * following Normal memory access. Writes are…