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Altera_Forum's avatar
Altera_Forum
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20 years ago

VGA support in uclinux

hi all,

I am trying to enable VGA support in uclinux (1.4 rel).

In make menuconfig -> Device Drivers -> Graphics support, I found

[] Support for frame buffer devices

if I enalbe this support further it gives me 4-5 options

Is that enough to enable VGA support in uclinux. I searched for

Console display driver support ->

but I could not find it.

If any one has tried it before then pls suggest proper procedure.

thanks

Ankur

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    --- Quote Start ---

    originally posted by hippo@Jun 2 2006, 06:27 AM

    hi ankur,

    how do you connect the vga?

    there is no avalon bus vga support in kernel yet.

    maybe you can help to port it. http://forum.niosforum.com/work2/style_emoticons/<#emo_dir#>/smile.gif

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=15798)

    --- quote end ---

    --- Quote End ---

    hi hippo and all,

    I have lancelot VGA controller board, which I can connect to stratix 2s60 dev board 40 pin prototype connector.

    <div class='quotetop'>QUOTE </div>

    --- Quote Start ---

    There is no avalon bus VGA support in "kernel" yet.[/b]

    --- Quote End ---

    I can&#39;t understand this statement, I mean if I put a VGA IP core (third party) in hw config (sopc builder) and VGA core handles frame buffer mechanism then last thing is kernel support required. Ok I agree that I have to either port or write a new frame buffer driver.

    I hope my understanding is correct or pls correct it with you comments.

    If I am going in wrong direction then pls suggest or inform me.

    thanks

    Ankur
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    I don&#39;t know if the kit come with the driver for uClinux. If not, then you have to port or write a frame buffer driver.

  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    I believe the lancelot core is Avalon compatible, so that is what he is probably using. Regarding the driver, there is no driver for it yet - on your board, do you have a separate video buffer, or is it all run from the same RAM (SDRAM, DDR?). If you don&#39;t have separate video memory, like SRAM, running linux and video at the same time will be very difficult. And as hippo mentioned, you still need a framebuffer driver..

  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    --- Quote Start ---

    --- Quote Start ---

    I believe the lancelot core is Avalon compatible, so that is what he is probably using. Regarding the driver, there is no driver for it yet - on your board, do you have a separate video buffer, or is it all run from the same RAM (SDRAM, DDR?). If you don&#39;t have separate video memory, like SRAM, running linux and video at the same time will be very difficult. And as hippo mentioned, you still need a framebuffer driver..

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=15809)</div>

    --- Quote End ---

    hi all,

    thanks for the interest and reply,

    YES, lancelot core is Avalon compatilbe, I am using the same and I agree there is need for porting frame buffer driver for same, at present I am doing the feasibility study (going through other frame buffer driver present in uclinux) to do so.

    The example C code given by lancelot www.fpga.nl site, looks like it runs from SDRAM.

    Once I finish with the study I will update all,

    thanks,

    Ankur