Re: [meta-xilinx] ZCU102 boot issue
I agree. Much better then everyone that uses the pmu-firmware having to maintain these same patches in their own custom layer to get a working system. It would be nicer if the actual pmu_cfg_obj.c was not a patch, but just a file in pmu-firmware/files that the recipe copied to the build dir before the compilation task. Easier to replace in custom layer that way. The pm_binding.c modification would still be a patch. -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
Re: [meta-xilinx] ZCU102 boot issue
This is the error you get if the PMU does not get a config object on boot. When using a boot.bin object from the xilinx tools, the first stage bootloader is Xilinx's FSBL which loads a config object into the PMU at startup before it loads u-boot proper. When you use the instructions in the README, the first stage boot loader is u-boot's SPL, which does not know how to load a config object into the PMU. The config object I am talking about is the C file pmu_cfg_obj.c The workaround is to patch the pmu-firmware (it's a simple two line patch) to teach the PMU firmware to load a built-in config object. And then you need to include the pmu_cfg_obj.c in the source. So the pmu-firmware recipe needs two patches, but both are trivial. There are multiple threads on the mailing list about this. Here is a recent one that I initiated asking the same question as you in a different way https://lists.yoctoproject.org/pipermail/meta-xilinx/2019-January/004193.html -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
Re: [meta-xilinx] Clarification on pmu_cfg_obj handling for zynqmp boards
Hi Luca, What you describe is how I understand things. And I do have a booting system using the patch to the pmu-firmware and a pm_cfg_obj.c the customer provided. And I have also used a boot.bin produced by the xilinx tools by the customer with fsbl, pmu, etc... embedded. And that works fine too. I think I get the gist of things. What I am confused about is the usefulness of the meta-xilinx-standalone layer and the pmu-firmware in particular without patches. I don't think the license on the xilinx tool generated pm_cfg_obj.c matters too much. I wasn't suggesting the pm_cfg_obj.c be included in the layer since every board probably needs it's own version anyway. I was just asking about the patch to pm_binding.c to load an internal config object. Shouldn't this be included? I think it was you that suggested that the pmu-firmware recipe or another new recipe could go out and fetch the pm_cfg_obj.c file from somewhere else before the pmu-firmware compile step. That seemed like a reasonable idea to me. The pmu-firmware recipe as is doesn't seem too useful without these two items. But again I am new to these boards, maybe there is a bare-metal use for the PMU firmware that does not require a config object. But the multiconfig instructions imply that the layers should just work. As for u-boot SPL unable to load a cfg object to the PMU, I started to look at implementing that. SPL does already talk to the PMU, it retrieves the PMU fw version for example. But I stopped since it seems silly. If I have the cfg object at build time, why not just build it into the pmu-firmware as you do with the patch and skip the runtime loading at every boot. Regards, Scott -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
Re: [meta-xilinx] Clarification on pmu_cfg_obj handling for zynqmp boards
Hi Manju, Thanks for answering. I will look at the meta-xilinx-tools layer. I think I finally understand what is required to boot. But I am still not clear on the meta-xilinx multiconfig... The meta-xilinx-bsp/README.building.md has no mention that a patch is required to the pmu-firmware which is confusing. Is this just an omission? Is the pmu-firmware recipe useful without the patch? Excuse the dumb questions. I am new to xilinx boards. Regards, Scott -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
[meta-xilinx] Clarification on pmu_cfg_obj handling for zynqmp boards
Is there a way to use the thud branch meta-xilinx-bsp and meta-xilinx-standalone layers to build a bootable zynqmp system without having to use an external patch to the pmu-firmware recipe? -- ___ meta-xilinx mailing list meta-xilinx@yoctoproject.org https://lists.yoctoproject.org/listinfo/meta-xilinx
