Tegra2 USB issue

[Antony Pavlov]

On Thu, 24 Jul 2014 18:08:33 +0200
Lucas Stach <l.stach at pengutronix.de> wrote:

> Am Donnerstag, den 24.07.2014, 20:05 +0400 schrieb Antony Pavlov:
> > Hi!
> > 
> > I have just tested this commit
> > 
> > commit d8bdd537220dd83912949f19ba67029bd1f11c58
> > Author: Lucas Stach <dev at lynxeye.de>
> > Date:   Fri Apr 12 12:28:14 2013 +0200
> > 
> >     tegra: switch to proper CPU type
> >     
> >     Tegras main CPUs are all ARMv7.
> >     
> >     Signed-off-by: Lucas Stach <dev at lynxeye.de>
> >     Tested-by: Antony Pavlov <antonynpavlov at gmail.com>
> >     Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> > 
> > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> > index bb9b47b..dfb7e24 100644
> > --- a/arch/arm/Kconfig
> > +++ b/arch/arm/Kconfig
> > @@ -137,7 +137,7 @@ config ARCH_VEXPRESS
> >  
> >  config ARCH_TEGRA
> >         bool "Nvidia Tegra-based boards"
> > -       select CPU_ARM926T
> > +       select CPU_V7
> >         select HAS_DEBUG_LL
> >  
> >  config ARCH_ZYNQ
> > 
> > This commit breaks 'usb' command --- it does not scan devices anymore, just hangs.
> > 
> > I have used codesourcery arm-2013.11 toolchain.
> > 
> I haven't tested USB myself, as I'm not using second stage barebox after
> u-boot and there's still things missing for USB to work on first stage.
> Currently only SDMMMC is fully supported.

How I can run barebox from barebox (u-boot) on AC100?

> Are you testing exactly this commit? If so you might need to apply
> 431d8a247dfa63f817cda137a81dbb2244d413dc "arm: properly init alignment
> trap bit", as USB might trigger an unaligned access.

Thanks!
I'll try to apply 431d8a.. tomorrow.

> > I'll try to check latest barebox from next, but just now I have no means to burn
> > barebox-tegra20-toshiba-ac100.img into AC100's ROM.
> > 
> You'll notice that a newer barebox won't build images for AC100 that are
> suitable to burn into a boot media, because there are no BCTs publicly
> available for this device. The resulting AC100 image is only useful for
> starting with TegraRCM.

I work with my AC100 remotely so I can't press Ctrl-ESC on every boot for TegraRCM recovery mode.
How I can run barebox from barebox (u-boot) on AC100?


-- 
Best regards,
  Antony Pavlov