VGA support in uclinux

[Altera_Forum]

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

[Altera_Forum]

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

[Altera_Forum]

--- 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]

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]

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]

--- 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