• How get ARMv7 cache size

    John
    John

    Hi everybody!!

    I have a question on how get cache size on ARM v7-A, more specifically on A9 (or A7 or A15).

    In accordance with the TRM at page 1529 I get the value from CSSIDR register and I compute the cache size. More precisely, I do cache size = num…

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • cortex-A15 instruction set and optimization ways on this platform?

    Meng
    Meng

    Dear,

    I am an greenhand developer on cortex-a15.

    now I need some specification as follows:

    where I can get the instruction set of cortex-A15?

    are there some documents about optimization technology on cortex-A15(image processing optimization)

    Thanks a lot.

    …
    • Answered
    • over 3 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • Questions about Generic Timer in ARMv8

    wangchj
    wangchj

    When two clusters(Big/Little) exist in SoC, the timer can be used to support Synchronization between two clusters.

    But How to understand "Synchronization", anybody can tell me some typical application context? I am really confused......

    And, if…

    • Answered
    • over 5 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • How to understand SDIV instruction availability?

    Robert
    Robert

    Hi,

    When I read Thumb-2 instruction manual, it is not clear to me about SDIV availability. Especially I do not understand the last line "are not available in ARM state."

    Could you explain it to me?

    Thanks,

    New functionality introduced with Thumb…

    • Answered
    • over 4 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • ARMV7A virtualization

    DevendraT
    DevendraT

    Hi,

    I am working on a hardware platform having 2 Cortex-A15 cores (with virtualization extensions). For routing IRQ's at PL2 to PL3 ( to hypervisor mode), I am setting HCR.IMO bit and it is working fine for core-0. If I set the HCR.IMO for core-1, will…

    • over 1 year ago
    • System
    • Embedded forum
  • Different performance in HYP and SVC mode ARMv7A?

    ivanpavic
    ivanpavic

    I'm doing some testing on Exynos5422 SoC which implements big.LITTLE architecture (A7 + A15), I'm running bare metal application which starts in HYP mode. I haven't returned from HYP mode by accident and then software delay which I implemented by simple…

    • Answered
    • over 2 years ago
    • Processors
    • Cortex-A / A-Profile forum
  • ARM Shares Updated Cortex-A53/A57 Performance Expectations

    wangyong
    wangyong
    1.jpg

    With the first Cortex-A53 based SoCs due to ship in the coming months, and Cortex-A57 based designs to follow early next year, ARM gave us a quick update on performance expectations for both cores. Given the timing of both designs we'll see a combination…

    • over 6 years ago
    • Processors
    • Processors blog
  • Five things you didn't know about the ARM® Cortex®-A15 Processor

    Bernard Ortiz de Montellano
    Bernard Ortiz de Montellano

    By now, everyone knows that the ARM Cortex-A15 processor is ARM’s highest performance v7a ARM core to date. The Cortex-A15, along with the other ARM-based cores, are helping tablets surge a projected 53.4% this year, and has been part of some flagship…

    • over 6 years ago
    • Processors
    • Processors blog
  • A Walk Through the Cortex-A Mobile Roadmap

    Brian Jeff
    Brian Jeff

    Chinese Version中文版

    Introduction

    The ARM Cortex-A mobile application processor product line spans several generations and three main product tiers. Developers and SoC designers experienced with one or more of the newer ARM ARM Processors benefit from an…

    • over 6 years ago
    • Processors
    • Processors blog
  • High efficiency, midrange or high performance Cortex-A - What is the difference?

    Kinjal Dave
    Kinjal Dave

    A question that I am asked many times is – what is the fundamental difference between the high efficiency, mid range and the high performance application processors in the ARM Cortex family?

    The simple answer to this is – the power budget…

    • over 6 years ago
    • Processors
    • Processors blog
  • White Paper - Enabling Mobile Innovation with the Cortex-A7 Processor

    Kinjal Dave
    Kinjal Dave

    An excellent whitepaper that describes the features of Cortex-A7 and applications of this little processor.

    This white paper describes in detail the design choices considered including choice of feature set and performance level, and how its simplified…

    • Enabling_Mobile_Innovation_with_the_Cortex-A7_Processor.pdf
    • over 6 years ago
    • Processors
    • Processors blog
  • ARMv7-A - Power to the People

    Chris Shore
    Chris Shore
    Recently, I wrote an article called “Navigating the Cortex Maze” (Navigating the Cortex Maze) That was intended as an easy way-in to the ARM processor range, covering Cortex-A (architecture ARMv7-A), Cortex-R (ARMv7-R) and Cortex-M (ARMv7…
    • over 6 years ago
    • System
    • Embedded blog