[fedora-arm] Re: Raspberry Pi 4 / Fedora 32 / Kernel 5.6

> Just remove the cma= entry in the grub.cfg on the vfat partition it
> will be easier, and an order of magnitude quicker.


> I had a similar issue with recent kernels that I solved by removing
> a cma= setting from the kernel boot line.

I removed cma= but it had no effect, see below.

Thanks, Thomas


Fedora-Workstation-32-20200416.n.0.aarch64.raw.xz

/EFI/fedora/grub.cfg

set kernelopts="root=UUID=72ca87a8-123e-4645-a352-05639bb65638 ro
cma=256MB "

> But do be warned, there is no accelerated graphics on the RPi4 and
> hence it is well and truly unsupported for any graphical systems.
>
> > On Fri, Apr 17, 2020 at 1:17 PM Peter Robinson <
> > pbrobinson@gmail.com> wrote:
> > >
> > > On Fri, Apr 17, 2020 at 12:13 PM <ng0177@gmail.com> wrote:
> > > >
> > > > Thanks for that! In one of latest images it gets stuck at the
> > > > point shown in the attached screenshot.
> > >
> > > What image are you using, full file name please.
> > >
> > > What revision of the hardware do you have? You should have a line
> > > at
> > > the early U-Boot phase that looks something like:
> > > RPI 4 Model B (0xc03111)
> > >
> > > I'm interested in the hex values at the end.
> > >
> > > > Good to have your clarification on RPi4 support in the Kernel.
> > > >
> > > > Thomas
> > > >
> > > > On Fri, Apr 17, 2020 at 12:01 PM Peter Robinson <
> > > > pbrobinson@gmail.com> wrote:
> > > > >
> > > > > Hi Thomas,
> > > > >
> > > > > > Hi, testing of daily images from
> > > > > > https://dl.fedoraproject.org/pub/fedora-secondary/development/32/Workstation/aarch64/images/
> > > > > > Raspberry Pi 4 defies the keyboard.
> > > > >
> > > > > I'm not sure what you mean by defies in this context? They
> > > > > keyboard
> > > > > doesn't work? At what point are you having issues. There is
> > > > > no support
> > > > > for USB (actually the PCIe), hence keyboards, in the U-Boot
> > > > > firmware
> > > > > which means it won't work in grub or the early boot process.
> > > > > Once it
> > > > > gets to Linux such as the login prompt they keyboard should
> > > > > work find
> > > > > as there is USB support.
> > > > >
> > > > > > I have been under the assumption that 5.6 has support
> > > > > > built-in? Any ideas?
> > > > >
> > > > > Support for what exactly? Support for a device such as the
> > > > > RPi4 is not
> > > > > a binary thing. There is initial support and enablement so
> > > > > it's useful
> > > > > for a number of situations but the support is far from
> > > > > complete and
> > > > > hence while for a it works for a lot of use cases we don't
> > > > > officially
> > > > > support the RPi4 yet because the HW enablement is incomplete.
> > > > >
> > > > > Peter
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