• How to read non-secure SP_EL1 in BL31?
    I am using Linaro's Android release on Juno r1. While the Android OS is running, i switched into EL3 by smc instruction. Then, in the smc handler of BL31, i want to read the value of SP_EL1 register in...
  • About the skid problem in PMU overflow interrupt
    I asked a question about the PMU skid problem about half years ago ( https://community.arm.com/tools/dev-platforms/f/discussions/6986/about-the-interrupt-handling-in-gic), and i understand that the skid...
  • Can't resume PCI Express on Juno
    I am using Juno-R1 board with Linaro Release 16.02 Latest (juno-oe). I can put Juno into system suspend, but can't resume as it is the suspend state forever. Running the following command :      # echo...
  • How to generate timer interrupt?
    Hi all, I was studying juno_ADP_trm.pdf, but i don't find how to generate timer interrupt? for example, loop interrupt of 1ms. someone did it?
  • About the interrupt handling in GIC
    I am using Linaro's Android release on Juno r1 and trying to make use of performance monitor. I want to use the PMU to count each retired instruction in a specific application, however, the overflow interrupt...