• hi. i wonder AMBA 3.0 AXI out-of order - WID & RID
    Hi, I'm a graduate student living in south Korea. I'm studying about AMBA 3.0 AXI. Recently, I read "AMBA AXI Protocol.pdf". but i have two questions about AXI after reading. Firstly, i very wonder...
  • GIC order of completion of interrupts
    Hello, Reading the "ARM® Generic Interrupt Controller Architecture version 1.0 Architecture Specification" I read that "For nested interrupts, the order of interrupt completion must be the reverse of...
  • ARMv8 memory ordering
    In the ARM Architecture Reference Manual issue D.a (ARM DDI 0487D.a) section K11.3.1 "Acquiring a lock" has the following example code: AArch32 Px PLDW[R1] ; preload into cache in unique state Loop...
  • Memory access ordering - an introduction
    I recently gave a presentation at the Embedded Linux Conference Europe 2010 called Software implications of high-performance memory systems . This title was my sneaky (and fairly successful) way to get...
  • Cortex A53 Out of Order?
    Hi all, Recently I encountered a problem. During CA53 bootup stage, PC will transfer a small executable program to the target platform via USB and then give the control to that program, which will first...