Re: vm-basic-pci demo is not working for arm64

Philipp Eppelt <[email protected]> Mon, 21 Oct 2024 10:16:36 +0200
Newsgroups	gmane.comp.micro-kernel.l4.devel
Message-ID	<[email protected]>
Hi Mohamed,

can you please check your arm64 build tree and look into the folder 
'assets/dtb/'? There should be links to all the .dtb files of uvmm. The link of 
the file in question on my machine is:

[...]/.build-arm64/pkg/uvmm/configs/dts/OBJ-arm64_armv8a-std-l4f/virt-arm_virt-64_pci.dtb

If the file is missing in the linked folder, please check the corresponding 
source directory:

<src>/pkg/uvmm/configs/dts/

If virt-arm_virt-64_pci.dts isn't in there, you can download it from our 
development version of L4Re on github and recompile the uvmm package.

https://github.com/kernkonzept/uvmm/blob/master/configs/dts/virt-arm_virt-64_pci.dts

If the file is there, please check that '<arm64-build>/assets' directory is in 
your MODULE_SEARCH_PATH.

Let me know, if this solves the missing file problem.

Cheers,
Philipp



Am 20.10.24 um 09:20 schrieb Mohamed Dawod:
> Thanks Matthias
> I'm going to fix the typo of *virt-pci.dtbo*.
> What about the missing file *dtb/virt-arm_virt-64_pci.dtb *?
> 
> 
> On Tue, Oct 15, 2024 at 11:58 PM Matthias Lange <[email protected] 
> <mailto:[email protected]>> wrote:
> 
>     Hi Mohamed,
> 
>     On [15-10-2024 16:59], Mohamed Dawod wrote:
>      > Hi,
>      > I was trying to run the L4 demo *vm-basic-pci* for *arm64* using the command
>      > $ make qemu E=vm-basic-pci
>      > but It didn't work because of the missing 2 files :
>      > * virt-arm_virt-64_pci.dtb : which is requested by the *modules.list* file
>      > in the line :
>      >
>      > > module[arch=arm64,fname=virt-pci.dtb]     dtb/virt-arm_virt-64_pci.dtb
>      >
>      > * virt-pci.dtbo : which is requested by the *vm-basic-pci.cfg* by the
>      > configuration
>      >
>      > > if (L4.Info.arch() == "arm64") then
>      > >    dt = "-drom/.fdt"
>      > >    overlay = "*-drom/virt-pci.dtbo*"
> 
>     This is actually a typo. Please change this line to
> 
>        overlay = "-drom/virt-pci.dtb"
> 
>     Best,
>     Matthias.
> 
>      > > else
>      > >    dt = "-drom/virt-pci.dtb"
>      > >    overlay = ""
>      > > end
>      >
>      >
>      > I searched for both files in the whole *l4re-snapshot-23.10.1* directory
>      > but I couldn't find them
>      > Where can I find those necessary files to run *vm-basic-pc*i demo?
>      >
>      > Thanks in advance,
>      > Regards
>      >
>      > --
>      > Mohamed Dawod
>      > *Software Engineer,* Cairo Egypt
>      >
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