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

[Khem Raj]

> 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 <https://github.com/kraj/meta-jetson-tk1>
> 
> This is the guide I used as reference: http://elinux.org/Tegra/Downstream_SW/Gentoo_From_eMMC <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/ <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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