ac100 team mailing list archive

[Marc Dietrich <marvin24@xxxxxx>]

Am Freitag, 27. September 2013, 08:50:05 schrieb Gordan Bobic:
>  On Wed, 25 Sep 2013 13:47:25 +0400, Andrey Danin
> 
>  <andrey.danin@xxxxxxxxx> wrote:
> > On Wed, 2013-09-25 at 10:10 +0100, Gordan Bobic wrote:
> >> The default Tegra memory carve-out is 64MB. But my
> >> 
> >>  Xorg.0.log says:
> >>  
> >>  (--) TEGRA(0): VideoRAM: 32768 kByte
> >>  
> >>  tegra_drv.so does not understand a "VideoRAM" option.
> >>  
> >>  I tried experimenting with reclaiming some memory from
> >>  the top 64MB with the Tegra driver loaded, and Xorg
> >>  crashes instantly if this is attempted (62MB memory
> >>  reclaim works fine with fbdev_drv.so).
> >>  
> >>  Does anybody know what is eating those other 32MB of
> >>  RAM if the tegra_drv.so is only using 32MB? I tried
> >>  playign with the nvmem parameter but that seems to
> >>  get ignored on everything but the most ancient of AC100
> >>  kernels.

There is also some space needed for lp0 support code. 

>  Not that I think it's relevant since it is a fairly low
> 
>  level tegra memory usage map question, but here goes:
> > What is your kernel version?
> 
>  2.6.38.8 from my gitorious tree (includes 1280x720
>  screen patches and overclocking patches.
> 
> > What cmdline do you use?
> 
>  $ dmesg | grep "command line"
>  Kernel command line: vmalloc=320M video=tegrafb console=tty0 ro
>  usbcore.old_scheme_first=1 elevator=deadline zcache quiet
>  tegraboot=sdmmc
>  tegrapart=recovery:700:a00:800,boot:1100:1000:800,mbr:2100:200:800
> 
> > What is tegra driver version ?
> 
>  The latest available for soft-float distributions,
>  from Alpha 15-something release. Xorg ABI v10 (ABI v7
>  until yesterday).
> 
> > Please post dmesg and xorg log.
> 
>  Attached.
> 
>  Gordan

You should really try a newer kernel, but you may run into problems with the 
kernel graphics abi becuase you require softfloat. I think 3.0 is the lastest 
kernel which may work with soft-float drivers.

marc