[meta-xilinx] How to boot the ZynqMP?

[Giordon Stark]

Hi,

I'll share my experiences as it has been somewhat painful -- but I did
manage to have success booting from an SD card directly for MPSOC. I'm
working on QSPI boot -- but I wrote my experiences/guide here:
https://github.com/kratsg/meta-l1calo/wiki/ZynqMP:-Prepare-and-Boot-Hardware


You can also compare it to how I did it for the Zynq-7 -- to see the
differences. But this might help you get a bit further if you haven't
already.

Giordon

On Tue, Aug 22, 2017 at 12:47 AM Mike Looijmans <mike.looijmans at topic.nl>
wrote:

> On 22-08-17 02:25, Jean-Francois Dagenais wrote:
> >
> >>
>
> Kind regards,
>
> Mike Looijmans
> System Expert
>
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>
> On Aug 21, 2017, at 04:20, Mike Looijmans <mike.looijmans at topic.nl> wrote:
> >>
> >>
> >> I recall having done this stuff about half a year ago, and at least
> then I could create an SPL based loader that actually booted. The layer
> above looks like regression to me.
> >
> > Xilinx "official" support is in FSBL for zynqmp. They removed the SPL
> zynqmp stuff from their u-boot fork if I am not mistaken. And they
> configure everything using their own stack including other layers such as
> meta-linaro and meta-petalinux.
> >
>
> I'm not sure they removed it, the u-boot-xlnx fork is about 8 months
> behind on
> mainline u-boot.
>
> Stangely, the mainline version has SPL support, an I actually can get the
> board to boot with SPL. But I can't figure out how to make it load PMU and
> ATF.
>
> There have been dozens of commits from Xilinx to support the zynqmp in
> u-boot
> mainline. None of these are in the Xilnx fork, so I assumed that Xilinx had
> seen the light... Apparently the opposite is true.
>
> >>
> >> Current state is that if I generate FSBL using Vivado SDK I can make it
> load u-boot by generating a boot.bin containing the FSBL and u-boot.elf.
> But then I don't have the PMU firmware and ATF and thus the kernel won't
> run.
> >
> > Had the same problem. This is because we are hanging on to the old trail
> (without the extra layers Xilinx wants us to use).
> >
> >>
> >> I tried putting ATF and PMU firmware from the meta-xilinx build into
> the boot.bin using the proper attributes, but that results in complete and
> utter quiet hangup after power-up. I only see the FSBL start message on the
> uart.
> >
> > I had to fork a machine from zcu102 in u-boot (so I forked u-boot-xlnx)
> in my env. Also forked meta-xilinx-tools such that my machine does the same
> configuration of xilinx-bootbin as zcu102 so the ATF and PMU firmware are
> bundled inside boot.bin. My fork of
> u-boot-xlnx/include/configs/xilinx_zynqmp_zcu102.h is where I tie it all
> together with the right file names for linux image and dtb to match what I
> have put into the partition using wic, and the default names that yocto
> uses for those.
> >
> > It was a bit of a hassle, and a annoyance compared to the ease of build
> of the zynq7 series board, but in the end, learned a lot and am more than
> ever the master of my domain! ;)
> >
>
> At least now I understand why there's so little interest in the MPSOC. The
> licensing alone is a nightmare.
> --
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