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Forum Linux + baremetal
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  • Replies 11 replies
  • Subscribers 59 subscribers
  • Views 1742 views
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  • bare-metal
  • sbc
  • dual-core
  • single-board-computers
  • linux
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Linux + baremetal

amgalbu
amgalbu over 10 years ago

Hello

I was looking for suggestions about a request a customer made to me

This customer has a system that is made up of two boards: a board with a very simple MCU and an SBC with a dual-core CPU that runs Linux

The first board id actually requested because, in case of system reset, the application starts immediately (MCU has no OS so there is not boot time)

In order to reduce costs, I was asked if it was possible to make the SBC run the application that runs on the MCU

I found this application note but it seems that the bare metal application (running on CPU1) needs to be initialized by Linux, so the boot time is still there

So my question is: is it possible to run a bare metal application before Linux starts?

 

Any advice is welcomed!
Ambrogio

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  • clem57
    0 clem57 over 10 years ago

    Do you want to run bare metal instead of Linux? That is possible to do. I assume your Linux is running on ARM of some sort. There is freeRTOS that could run instead of Linux. Another possibility is running Damn Small Linux(DSL) which will come up in a flash. May need to create an ARM binary. Another one is http://archlinuxarm.org/.

     

    Clem

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  • amgalbu
    0 amgalbu over 10 years ago in reply to clem57

    Hi clem

    I want to run a bare metal application on one core and linux on the other cores. And i want the bare metal application to start as soon as the sbc is powered up (i.e. before linux boots)

    I was studying the application note whose link i posted in my original post and trying to understand if i can move the initiinitialization code in uboot

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  • clem57
    0 clem57 over 10 years ago in reply to amgalbu

    @amgalbu

    So you want this http://www.wiki.xilinx.com/Multi-OS+Support+%28AMP+%26+Hypervisor%29

    Clem

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  • clem57
    0 clem57 over 10 years ago in reply to clem57

    Or just how to program on bare metal like this https://balau82.wordpress.com/2010/02/14/simplest-bare-metal-program-for-arm/

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  • amgalbu
    0 amgalbu over 10 years ago in reply to clem57

    Yes this is the link where i found the application note. The problem is the bare metal applivations starts agter uboot so there is a delay ffrom when the sbc the is powered up to the moment when the bare metal application starts

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  • amgalbu
    0 amgalbu over 10 years ago in reply to clem57

    No this solution does not include linux

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  • amgalbu
    0 amgalbu over 10 years ago in reply to clem57

    No this solution does not include linux

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