[meta-xilinx] Zynqmp QSPI boot: FSBL or SPL?

[Manjukumar Harthikote Matha]

> -----Original Message-----
> From: meta-xilinx-bounces at yoctoproject.org [mailto:meta-xilinx-
> bounces at yoctoproject.org] On Behalf Of Magne Munkejord
> Sent: Monday, June 11, 2018 8:42 AM
> To: meta-xilinx at yoctoproject.org
> Subject: [meta-xilinx] Zynqmp QSPI boot: FSBL or SPL?
> 
> Hi
> 
> I'm trying to generate boot images for QSPI for a custom board in Yocto but ran
> into some issues.
> I use meta-xilinx-bsp and meta-xilinx-tools 2018.1 branches and I have added u-
> boot and linux machines + DTS pathces.
> 
> Can the files generated by Yocto be used to boot from QSPI?
> I did not find it in any readme but a patch in u-boot-xlnx suggested I need to
> follow a special QSPI partition layout and a special atf-spi.ub:
> https://github.com/Xilinx/u-boot-
> xlnx/commit/378a437a49dd3d17a9a544768051b2336e5ed874
> Is there an easy way to make Yocto generate this special atf-spi.ub?
> 

You can add a bbappend, see the existing recipe which generates atf-uboot.ub.
On similar line you can create atf-spi.ub

> 
> I tried an alternate approach by setting PREFERRED_PROVIDER_virtual/boot-bin =
> xilinx-bootbin to use FSBL and generate a BOOT.bin for QSPI. But the FSBL seems
> to require PMUFW version 1.0. I got around this by cherry-picking a commit from
> master branch to get a newer pmu-firmware recipe. But now I also need a newer
> kernel recipe. So I am not sure this is a reasonable path forward.
> 

Pin PREFERRED_PROVIDER_virtual/pmu-firmware = "pmu-firmware" from meta-xilinx-tools
Being on 2018.1 branches, it will build all the components including v4.14 kernel.

> In general which boot method would you recommend for QSPI? SPL or FSBL.

Flow depends on what you need. If you are sticking with SPL, then use Yocto release branches like master, rocko, morty etc 

If you using SPL flow, see Mikes input here
https://lists.yoctoproject.org/pipermail/meta-xilinx/2017-November/003343.html

Also check on Xilinx forum for any solution on FSBL flow.

Thanks,
Manju