[yocto] How to flash core-image-sato to a Nvidia Jetson TK1?

[Dalton Fury]

I see, but why boot from SD card, which is slower when there is eMMC?

Anyways, I flashed it successfully. But now I have no clue as to how to
enable CUDA.

I want to do some image processing with OpenCV/CUDA. What I tried is to
compile opencv with USE_CUDA=ON flage set in cmake. Then I tested to see if
I an use the gpu with opencv. But can't, and get 0 when I
call  gpu::getCudaEnabledDeviceCount(). This clearly indiacates that cuda
is not installed. So how do I install CUDA?

On Thu, Aug 6, 2015 at 9:29 AM, Khem Raj <raj.khem at gmail.com> wrote:

>
> On Aug 3, 2015, at 11:15 AM, Dalton Fury <daltonfury42 at gmail.com> wrote:
>
> Hi,
>
> I am a hobbyist, and liked yocto very much since I used in on an old
> Pandaboard ES. Now I got my hands on a Nvidia Jetson TK1, and want to get a
> yocto running on it. I intend to use it for heavy image processing and I
> prefer not to do it with the Ubuntu which comes with it loaded with GUI and
> Unity and all. So I build the image, but could not find any information on
> how to flash it to the eMMC on the board.
>
> Nvidia provides scripts for doing this. The process is as follows:
>
> 1) Download the driver package and extract it.
>
> 2) Download the sample rootfs and extract it to `rootfs` folder in where
> the driver package is extracted.
>
> 3) Run the apply_binaries.sh script. Upon inspecting the script, I found
> that it copies NVIDIA user space components, Nvidia firmware files, BSP
> test tools, gst test applications, create a lot of symbolic links within
> the rootfs extracted to the 'rootfs' folder. It also places the firmwares
> and kernel modules, and also copies some configuration files for the boot
> loader(U-Boot).
>
> 4) Run flash.sh.
>
> What I did is to copy the rootfs that was made with yocto, and entirely
> skip Step 3 assuming that all the necessary software is already made with
> yocto as a result of adding the BSP. This attempt of course, failed.
> Thought the kernel booted, it froze halfway. No error message. Just a flack
> screen with a while "_" on the top left corner.
>
> This is the bsp I used: https://github.com/kraj/meta-jetson-tk1
>
> This is the guide I used as reference:
> http://elinux.org/Tegra/Downstream_SW/Gentoo_From_eMMC
>
> If anyone has experience performing this(i bet you do), please help me
> out. Thanks.
>
>
> I have booted Angstrom XFCE-nm-image on it from SD card. Firstly you need
> to flash new kernel and also modify the boot loader arguments so it boots
> from SD card first.
> all instructions to update the boot loader cmdline and kernel are
> documented
>
> see
> https://cyclicredundancy.wordpress.com/2014/05/10/flashing-the-rootfs-on-a-nvidia-jetson-tk1/
>
> you might need
>
> sudo ./flash.sh -S 14580MiB jetson-tk1 mmcblk0p1
>
>
> --
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