[meta-xilinx] How to boot the ZynqMP?

[Mike Looijmans]

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.