• Unhandled fault: alignment fault (0x92000061) at 0x00000000fff0f729

    rpulluru
    rpulluru

    Hi,

    I have an arm cortex A-57 machine that is running 3.16 linux kernel (64bit) compiled using gcc-linaro-aarch64_be-linux-gnu-4.9-2014.09_linux toolchain.

    My application (32bit) is accessing a member inside a structure at unaligned address using pointer…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Development in Assembly Language

    AnthonyPaulO
    AnthonyPaulO

    Does anyone know where I can find the toolchain for developing apps on an A57 (Raspberry Pi 3) in Assembly Language? I am looking in particular for a Windows toolchain that will allow me to cross compile, but I'll take anything at this moment since all…

    • over 3 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • L2 TLB internal memory access through RAMINDEX

    Amitra29877
    Amitra29877

    Hi Experts,

    I need to access L2 TLB internal memory for A76 core (Section A6.6 of Cortex A76 TRM) . I was searching for an example code and found this for A57 core:

    LDR X0, =0x0000000001000D80
    SYS #0, c15, c4, #0, X0
    DSB SY
    ISB
    MRS X1, S3_0_c15_c0_0…
    • Answered
    • over 2 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Can we reset L2 subsystem for cortex-A57?

    MarekBykowski
    MarekBykowski

    My system hosts 4x clusters, each with 4x cpus A57 connected through interconnect CCN504. I have a special case in which I need to reset L2 sybsystem (L2 is 2MB in my case) from inside SPL Uboot running from a static memory. The memory is attributed to…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Armv8 Memory Mapping

    AnthonyPaulO
    AnthonyPaulO

    I am looking to emulate an Apple II and would like to specify some address ranges as being memory mapped so that any access would result in perhaps an interrupt that I am then able to handle and in which I can determine the memory address being accessed…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Using an external clock - experts only

    AnthonyPaulO
    AnthonyPaulO

    I'm looking to emulate a 6502 on the ARM but I would like to make it cycle accurate so I need some way to interface to an external clock. I can't rely on an internal clock as there are external components that will rely on the external clock as well and…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Booting bare metal application on cortex A57 with u-boot

    Gokul
    Gokul

    Hi,

    I am using ARM cortex A-57 processor and I build image with my own startup code and ld script. The image is loaded with u-boot. When I tried booting the image, it is aborting with following message:

     

    ## Booting kernel from Legacy Image at 48080000…
    • Answered
    • over 3 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Processor Modes in cortex-A57

    Ajeesh
    Ajeesh

    Hi,

    I have done some basic assembly in Armv7-A processors (cortex A9). The version of ARM supports modes like User, sys, SVC etc. Does the ARMv8 also has the similar modes? Where can i find the details. Please point me to the documents if any.

    Regards…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Porting code from Cortex-A9 to Cortex-A57

    Ajeesh
    Ajeesh

    Hi,

    I have been using I.MX6Q Sabre sd board (cortex-a9 ). I build image with my own start script and ld script. The image was loaded with u-boot. Now i would like to do the Same with Renesas R-Car M3(cortex A-57). How would i go about this? Can i use the…

    • Answered
    • over 3 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • How to use generic timer/counter

    Michael
    Michael

    The technical reference manual states that the Cortex-A57 generic timer events are not affected by CPU clock frequency change. My challenge is that I can't use any built in linux libraries to create a delay because whenever I try it clears performance…

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • What does PMCEID0_EL0 determine for the the PMU? Performance monitor config

    Michael
    Michael

    The TRM for the a-57 states that PMCEID0_EL0: Defines which common architectural and common micro-architectural feature events are implemented. PMCEID1_EL0 is a continuation of this list. If a bit position is a "1" that means the even is implemented…

    • over 4 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • How to configure Cortex-A57 PMU

    Michael
    Michael

    I asked this question in a different community space but it seemed like this is a more appropriate home.

    I'm trying to configure the performance counters for the Cortex-A57 and I'm very confused. The technical reference manual alludes to accesses being…

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Aarch32 app performance on ARMv8a device

    Sreenath P V
    Sreenath P V

    Hi ,

    I am running aarch32 app in ARMv8a( cortex-a57 ) device.  The performance reports ( using gettimeofday() utility ), showing  large spikes on random calls. But the same app on ARMv7a( cortex-a15 ) device is quite stable.

    Will the aarch32 library…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • How to measure program execution time in ARM Cortex-A53 processor?

    Rajeev Verma
    Rajeev Verma

    Hi,

    I was using following method to read clock in cortex-a15:

           static void readticks(unsigned int *result)

            {

                struct timeval t;…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Cortex-A72 and Cortex-A5x series boards

    techguyz
    techguyz

    Hi Experts,

    Is there any sample development boards available on Cortex-A72/5x series ?

    Regards,

    Techguyz

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Motherboard provider with Cortex-A53 or ARM Cortex-A57

    Giovanni
    Giovanni

    Hello,

    I want to experiment with a storage solution ARM based. Is there any provider actually selling dev kits or consumer boards based on ARM Cortex-A53 or ARM Cortex-A57?

    Obviously the main requirement for purchase is the availability of SATA3 ports for…

    • Answered
    • over 6 years ago
    • Processors
    • Cortex-A / A-Profile forum
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