Re: My first try installing

On 08/06/2024 06:06, [email protected] wrote:
> On Sat, Jun 08, 2024 at 04:16:35PM GMT, Lloyd Parkes wrote:
>
>> I almost got my Jetson Nano to boot.
>
> Thanks, this will be very useful.
>
>> I have an early mode Jetson Nano with a revision A02 carrier
>> board. I may well have upgraded the onboard firmware at some distant
>> time in the past. I used a serial to USB cable. I am not "correctly"
>> powering my Jetson, others may have more luck than me.
>
>> If I boot my Jetson Nano with no SD Card in it then I eventually get
>> a U-Boot 2020.04 banner, a "Hit any key to stop autoboot:" prompt
>> and when the prompt times out it tries to boot from the
>> ethernet. This is good because we need U-Boot to boot NetBSD.
>
> Does this mean the "extract uboot from pkgsrc" step is unnecessary?

Maybe... If the already supplied u-boot is new enough (2020.04 sounds
OK, but I forget), then you might not need to use

	pkgsrc/sysutils/u-boot-jetson-nano

>> I then copied the Nvidia Linux image to a µSD and mounted that card
>> on a Linux laptop. I copied the file
>> boot/kernel_tegra210-p3448-0000- p3449-0000-b00.dtb onto my
>> laptop. This is the devicetree file I talked about earlier. There
>> are a huge pile of .dtbo files that are devicetree overlay files
>> which are only needed to describe optional extra hardware and I
>> ignored them. I then copied kernel_tegra210-p3448-0000-p3449-
>> 0000-b00.dtb into the dtb directory on the MS-DOS partition of a µSD
>> card with NetBSD on it.
>
> I had not done this during my attempt because I assumed the needed dtb
> files were already in the u-boot image I extracted and dutifully dd'ed
> onto the beginning of the SD card. Was that a misconception?

u-boot normally loads a DTB from the MS-DOS partition for the OS.

Nick