• ARM Compute Library in Xilinx SDK for bare metal execution?

    Anto85
    Anto85

    Hi all, 

    I'm trying to add the ARM compute library on Xiling SDK to run a CNN on the Cortex A-9. I'm having a hard time trying to integrate it. To begin with, i downloaded the ComputeLibrary master folder at https://github.com/ARM-software/Comp…

    • over 1 year ago
    • Open Source Software and Platforms
    • Machine Learning forum
  • The difference between VFPv4 and VFPv3, between SIMD2 and SIMD?

    Meng
    Meng

    Dear,

    I am developing projcet using cortex-A8, I optimize some algorithm code on cortex-A8 cpu.

    The code shall be ported to cortex-A15 in near future, I got some information about BEON and VFP from website,the different NEON / VFP version betweem cortex…

    • over 4 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • How to use ETM to trace PMU events?

    Zhenyu Ning
    Zhenyu Ning

    According to the manual, we can select PMU events as external input resource of ETM. However, the manual does not describe it in detail, and my attempts also failed.

    To perform the experiment, i configure the following registers,

    TRCCONFIGR -> 0x18c1  …

    • Answered
    • over 4 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • How to enable L2 cache view for A53 on Juno ADP r0?

    Marc
    Marc

    Hello,

    I have used DS-5+DSTREAM to connect to the A57/A53 big.LITTLE clusters on my Juno dev board. I use the startup_ARMv8_GICv2 example project included with DS-5 as the bare-metal image to run.

    When I navigate to the cache view window in DS-5, I can…

    • Answered
    • 10999.zip
    • over 3 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Juno r2 L2 and TLB cache

    xpo
    xpo

    Hey guys,

    I need your help because I have to count the number of L2 instruction access, miss and hits. But in the data-sheet I did not find the events that I have to count.

    I found it in the ARM V8 data-sheet. Therefore, is it usable on A72 & A53 even…

    • Answered
    • over 3 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Can we get notified when the ETB is full?

    Zhenyu Ning
    Zhenyu Ning

    Hi everyone,

    I am using ETM v3.3 and ETB11 on Cortex-A8 to trace the execution of the applications. As the size of the ETB is normally very limited on the development boards, it always overflow in less than 1ms. After the overflow, we may loss some important…

    • over 3 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • How to use the external debugging interface in Juno board?

    Zhenyu Ning
    Zhenyu Ning

    Hi all,

    I am trying to use one Cortex-A57 (debugger) core to debug a Cortex-A53 core (target) on Juno board. According to the armv8 architecture manual, i may halt the the target and use EDITR instruction to force the target execute instructions. So,…

    • Answered
    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • DS-5 Bare-metal code - Accessing my host NIC card drivers

    Ab
    Ab

    Hi there, 

    Is there any way from DS-5 development studio to access my host NIC ethernet card? 

    I want to write a bare metal code (Cortext A9),  creating an ARP packet on DS-5 and I would like to test it if its working with my host NIC Card drivers. 

    Is it…

    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • NEON intrinsics vector division and reciprocal functions not found

    aketh
    aketh

    Hi all,

    I am working with a simple sqrt kernel. Code given below at end of post. It calculates the sqrt on a given array and stores it into a new array.

    However, when compiling with a  gcc compiler as  - gcc -mcpu=cortex-a53 -mfpu=neon neon_sqrt_kernel.…

    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Download Eclipse in Embedded Boards (Arm Processeur)

    kanzali
    kanzali

    Hi ,

    Please I need help, I need to download Eclipse in My board DE1-Soc FPGA Which has the latest dual-core Cortex-A9 embedded cores with architecture armv7l and the other board Rasberry ARM Cortex-A53.

    do you have any idea which packages can I install…

    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Enabling MMU crashes ARM Cortex A7

    VISA
    VISA

    I am working on smp_prime code of ARM - A9. And a i want to use that code for cortex A7.

    But after making changes like setting smp bit in ACTLR, Making the memory region device and non coherent- then if i enable the MMU bit from system control register…

    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Juno A57 Core Runs Slower Than A53 Core

    Shengye Wan
    Shengye Wan

    Hi experts,

    Recently, I'm trying to evaluate the code execution time when using the A53 core and the A57 core.

    However, my result shows A53 core is much faster than the A57 core, which does not make sense to me so I want to share my case here to see…

    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Enabling MMU in EL-2

    M.Eladouly
    M.Eladouly

    Hello,

    I'm developing a Baremetal application running on ARM Cortex A35 (ARMv8).

    I have succeeded to enable the Caches and MMU in EL-1.

    My questions are:

    1. Can I enable the MMU and invalidate and enable the Caches in EL-2 without enabling them…

    • Answered
    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Cortex-A35 Counter-timer Physical Count register (CNTPCT_EL0) always reads zero

    Tao Lu
    Tao Lu

    Counter-timer Physical Count register CNTPCT_EL0 always reads zero on FVP_Base_Cortex-A35x1. 

    I expect the value of this register to change over time. 

    I set $CNTFRQ_EL0=35000000, and $CNTP_CTL_EL0=5.

    What is the possible reasons, and how is there any configuration…

    • Answered
    • over 1 year ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • Cross compiling snort using ptxdist results in INADDR_NONE configure error

    Awais
    Awais

    Hello,

    I am not sure whether this is a right but I thought to give it a go as I am cross compiling snort for an ARM-based system. 

    I am very new to cross-compilation using ptxdist tool. I am using ptxdist version 2013.03.0 and trying to build snort 2.9…

    • over 2 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • How to check the enable status in ETM v3.3

    Zhenyu Ning
    Zhenyu Ning

    Hi all,

    I am trying to use the ETM on iMX53 qsb, which contains a Cortex-A8 processor. In the board, the trace result of the ETM is outputted to both ETB and TPIU via an ATB replicator, looks like the following figure,

    I am going to enable the ETM and…

    • Answered
    • over 3 years ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • PMU CP15 on AARCH64 - Cortex a-53 - Assembly Error on MRC-MCR

    br-dev
    br-dev

    Hi,

    I am trying to compile PMU Cycle Counter  as per  the code available in this blog PMU Enable on a RPI3 B+ using Suse 64 bits Aarch 64 4.12.14-lp150.12.28-default.

    I have the Assembly error on each MRC or MCR instructions. In the ARM i have the feeling…

    • Answered
    • over 1 year ago
    • Open Source Software and Platforms
    • Arm Development Platforms forum
  • "init (1): undefined instruction: pc=b6fce0a8" during mounting ARM BE Root file system

    Pankaj P
    Pankaj P

    Hi, 

    I am getting below  mentioned error when kernel is trying to mount Big endian NFS root filesystem.  

    [ 9.091012] devtmpfs: mounted
    [ 9.094985] Freeing unused kernel memory: 1024K
    [ 9.114876] init (1): undefined instruction: pc=b6fce0a8
    [ 9.120227] CPU…

    • over 1 year ago
    • Open Source Software and Platforms
    • GNU Toolchain forum
  • Hardware suggestion to work on TrustZone in Android

    Alberto Maria Scattolo
    Alberto Maria Scattolo
    Note: This was originally posted on 29th August 2011 at http://forums.arm.com

    Hi everybody,

    For my MSc thesis I have to work on ARM TrustZone and the idea is to use it in Android OS (2.3+). I'm pretty new to this world but reading the forum and the documentation…
    • over 7 years ago
    • Open Source Software and Platforms
    • Android forum
  • android can't add the cortex a8 neon assermbly function?

    Eric mao
    Eric mao
    • over 7 years ago
    • Open Source Software and Platforms
    • Android forum
  • What is in my tablet? Cortex-A8?

    john law
    john law
    Note: This was originally posted on 26th December 2011 at http://forums.arm.com

    I have purchased an android  tablet with the Cortex A8 processor , but when I run the system info program it reports that it has the ARMv7 processor rev 2  (v71)  is this the…
    • over 7 years ago
    • Open Source Software and Platforms
    • Android forum
  • KVM on Chromebook for Android, Ubuntu...

    Alban Rampon
    Alban Rampon

    I was talking with a colleague who is a specialist on KVM about having Android and Ubuntu on the Chromebook.

    If you have a Chromebook using Samsung Exynos 5 SoC and you want to use virtualization to run a couple of operating systems:

    a guide to setup KVM…

    • over 6 years ago
    • Open Source Software and Platforms
    • Android forum
  • how to program on android

    Onan Farabi
    Onan Farabi

    I had a hobby where I enjoyed it very much when I had stress it is programming on assembler. I want to have some fun programming my ARM A9. Im using android OS. I wonder maybe any of you can guide me how to do this on android? And is there any free tools…

    • Answered
    • over 6 years ago
    • Open Source Software and Platforms
    • Android forum
  • Android NDK options: What compiler flags should I use for my libraries and apps to get the best performance across the widest range of SoCs?

    Matthew Du Puy
    Matthew Du Puy

    Compiler options is one of those subjects that can get decidedly more complicated as you descend the rabbit hole. Undoubtedly, developers using or creating C/C++/Assembly libraries in Android are seeking to compile the most optimal binary for as many…

    • Answered
    • over 6 years ago
    • Open Source Software and Platforms
    • Android forum
  • Android to Linux Distro

    Mike Clark
    Mike Clark

    I expect to have a Rockchip RK3288-based system, (quad-core Cortex-A17's), which comes pre-loaded with KitKat. Is there any documentation on whether, and if so, how I could build a Linux system around the same kernel, so as to create a dual-boot Android…

    • Answered
    • over 5 years ago
    • Open Source Software and Platforms
    • Android forum
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