Jetson TK1 board support

[Weiß, Dr. Jürgen]

Hi,

I have a rather rough port of FreeBSD current on arm to Jetson TK1. I
used Stephen Warren's tegra u-boot sources, which initialize and configure
USB and PCIe. 

So SMP, USB and the onboard PCIe Ethernet adapter work.

After Ian's changes to busdma_machdep-v6 (r269212) I had problems with
cache coherency with the Ethernet adapter. Seems this is due to the aggressive
L2 prefetcher of Cortex A15. Disabling L2 prefetch does help, as well as
invalidating the cache a second time after the dma transfer. I'm not
sure what the correct solution to this problem is. I wonder how
other Cortex A15 platforms (exynos5) handle this. 

I will probably be able to do some cleanups and put patches on the web
within a week.

Regards

Juergen

Juergen Weiss      |Universitaet Mainz, Zentrum fuer Datenverarbeitung,
weiss at uni-mainz.de |55099 Mainz, Tel: +49(6131)39-26361, FAX: +49(6131)39-26407

> -----Original Message-----
> From: owner-freebsd-arm at freebsd.org [mailto:owner-freebsd-arm at freebsd.org] On Behalf Of
> Ian Lepore
> Sent: Sunday, September 21, 2014 3:44 PM
> To: Lundberg, Johannes
> Cc: freebsd-arm at freebsd.org
> Subject: Re: Jetson TK1 board support
> 
> On Sun, 2014-09-21 at 16:45 +0900, Lundberg, Johannes wrote:
> > Great!
> >
> > What I've done so far is
> >
> > - build and patch (enable API) u-boot-nvidia on freebsd (i think i got it
> > from git://nv-tegra.nvidia.com/3rdparty/u-boot.git, the normal u-boot
> > wouldn't work...)
> > - flash u-boot-dtb-tegra.img onto the board's mmc using nvidia's flash tool
> > on ubuntu
> > - build an image using crochet and dd to sd card (so far I copied the
> > beaglebone setup, just to get a ubldr and a kernel file)
> >
> >
> > From u-boot I can see all devices. I load ubldr with
> > fatload mmc 1:1 0x80200000 ubldr
> > bootelf 0x80200000
> >
> > ubldr load fine but, from ubldr I can only see the mmc 0 and net devices.
> > There's no sd card (mmc 1), and no ufs partition..
> >
> >
> >
> >
> > --
> > Johannes Lundberg
> > BRILLIANTSERVICE CO., LTD.
> >
> > On Fri, Sep 19, 2014 at 8:25 PM, John Howie <john at thehowies.com> wrote:
> >
> > > Hi all,
> > >
> > > I am up for testing and supporting this board. I ordered and received
> > > mine, but have not really had a chance to use it due to work to-date. The
> > > good news is the next few months I will have bandwidth.
> > >
> > > Regards,
> > >
> > > John
> > >
> > >
> > > On 9/19/14, 12:15 PM, "Lundberg, Johannes"
> > > <johannes at brilliantservice.co.jp> wrote:
> > >
> > > >Hi
> > > >
> > > >I started working on adding the Jetson TK1 board to Crochet. Is there any
> > > >work in progress on this?
> > > >I guess there is quite a lot of work that has to been done to get full
> > > >support for it in the kernel as well..
> > > >
> > > >Best regards
> > > >--
> > > >Johannes Lundberg
> > > >
> 
> You may have to change some u-boot options to support multiple mmc/sd
> interfaces.  Look in the config header for CONFIG_SYS_MMC_MAX_DEVICE; if
> it's not there you may need to add it.  For wandboard I also had to add
> a freescale-specific one, CONFIG_SYS_FSL_USDHC_NUM, so there may be
> something like that you need to find as well.
> 
> -- Ian
> 
> 
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