Re: [meta-freescale] How to get firmware-imx for imx8mm evk into sdcard image? I'm getting firmware loading errors for sdma-imx7d.bin etc.

From: "Andrey Zhizhikin" <andrey.z@gmail.com>
To: Brian Hutchinson <b.hutchman@gmail.com>
Cc: meta-freescale@lists.yoctoproject.org
Subject: Re: [meta-freescale] How to get firmware-imx for imx8mm evk into sdcard image? I'm getting firmware loading errors for sdma-imx7d.bin etc.
Date: Thu, 8 Oct 2020 11:10:41 +0200	[thread overview]
Message-ID: <CAHtQpK6KEo3=fNMs8TurHDWpK7r0iPZa6UqBeVdSrCVrqfcVkg@mail.gmail.com> (raw)
In-Reply-To: <27157.1602017061306262562@lists.yoctoproject.org>

Hello Brian,

On Tue, Oct 6, 2020 at 10:44 PM Brian Hutchinson <b.hutchman@gmail.com> wrote:
>
> On Tue, Oct 6, 2020 at 01:22 PM, Andrey Zhizhikin wrote:
>
> Hello Brian,
>
> On Tue, Oct 6, 2020 at 9:51 PM Brian Hutchinson <b.hutchman@gmail.com> wrote:
>
> ... what "distro" 'should' I be using since I have a custom board that's based on imx8mm evk but I don't necessarily want/need wifi, bluetooth, video, touchscreen etc.???
>
> I suggest you go with your own distro then, as you can leverage the
> DISTRO_FEATURES in it yourself. You can either take any of 'fsl-'
> prefixed distros over 'poky' if you need some NXP proprietary
> components (e.g. VPU, GPU, etc), or take any of 'fslc-' prefixed ones
> if you want to stay with mainline. Please note - I do not say that
> 'poky' would not work here! :) It is just a reference distro from
> Yocto Project, which targets qemu on the first place, but also works
> well for real HW.
>
> This is the way we build our distro (derived from 'fsl-wayland'), and
> so far it has proven to be working quite well. I also do sanity build
> and run the 'fsl-wayland' off the master on imx8mmevk to make sure
> there are no regressions.
>
> When I did NXP released builds I would use fsl-wayland distro but if memory serves me right a core-image-minimal would not boot.  Only core-image-base images did and they were quite large.

I just did a following build:
$ MACHINE=imx8mmevk DISTRO=fsl-wayland bitbake core-image-minimal

Image produced boots fine on i.MX8M Mini EVK.

Runtime device info:
# cat /etc/os-release
ID=fsl-wayland
NAME="FSL Wayland"
VERSION="3.2-snapshot-20201008 (master)"
VERSION_ID=3.2-snapshot-20201008
PRETTY_NAME="FSL Wayland 3.2-snapshot-20201008 (master)"

# uname -a
Linux imx8mmevk 5.4.24+gbabac008e5cf #1 SMP PREEMPT Sat May 30
07:25:46 UTC 2020 aarch64 GNU/Linux

Please note: with this configuration you would get a kernel from NXP
(versioned 5.4.24). If you would like to utilize the NXP kernel with
latest stable patch level, you should switch
PREFERRED_PROVIDER_virtual/kernel_mx8mm = "linux-imx" to
PREFERRED_PROVIDER_virtual/kernel_mx8mm = "linux-imx-fslc"

>.

> I do need to create my own distro but kind of would like to start from core-image-minimal and build up rather than take something like fsl-wayland and try to figure out what I don't need.  Being new to NXP family this approach "feels" more logical.
>
> Is poky what's causing my pain?
>
> You can see what distro features you have included when you do
> 'bitbake -e' and search for DISTRO_FEATURES. If you have (and
> according to what you say - you do :) ) some pieces you do not need -
> you can always either not include them in your custom distro, or use
> DISTRO_FEATURES_remove = "<unneeded list>".
>
> I've been doing TI based builds forever and recently switched over to NXP based products so still learning the lay of the land. I finally discovered I don't think I want to be building based off NXP releases from codeaurora and that Freescale is the better base for our products but not 100% clear what distro's are available and which ones I should focus on.
>
> Those distros are located in a meta-freescale-distro layer, you can
> peek there to see what's available.
>
> I'll look.   Thanks
>
> Regards,
>
> Brian
> 
>

--
Regards,
Andrey.