[edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[Oliver Smith-Denny]

Currently, unlike OVMF, ArmVirtQemu does not display any graphics,
only the QEMU monitor. Graphics are helpful to confirm booting into
an OS is successful, interacting with the EFI shell while getting
separate logging messages, etc.

This patch adds the QEMU parameters to launch a graphical window
and add a USB keyboard and mouse, which is modeled as a tablet as
it tracks better in QEMU than a generic mouse. virtio-gpu-pci is
chosen as the graphics device as it is recommended by QEMU for the
ARM virtual platform.

The graphics and USB input devices will only be added to QEMU when
QEMU_HEADLESS == FALSE, so CI builds will not attempt to use the
graphics and if a user does not want graphics, they can add
QEMU_HEADLESS=TRUE to the build cmdline.

GitHub PR: https://github.com/tianocore/edk2/pull/4750

Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>

Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
---
 ArmVirtPkg/PlatformCI/PlatformBuildLib.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/ArmVirtPkg/PlatformCI/PlatformBuildLib.py b/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
index 405817cae785..0ddaccf9c21f 100644
--- a/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
+++ b/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
@@ -244,6 +244,11 @@ class PlatformBuilder(UefiBuilder, BuildSettingsManager):
         # Conditional Args
         if (self.env.GetValue("QEMU_HEADLESS").upper() == "TRUE"):
             args += " -display none"  # no graphics
+        else:
+            args += " -device virtio-gpu-pci"                         # add recommended QEMU graphics device
+            args += " -device qemu-xhci,id=usb"                       # add USB support for below devices
+            args += " -device usb-tablet,id=input0,bus=usb.0,port=1"  # add a usb mouse
+            args += " -device usb-kbd,id=input1,bus=usb.0,port=2"     # add a usb keyboard
 
         if (self.env.GetValue("MAKE_STARTUP_NSH").upper() == "TRUE"):
             f = open(os.path.join(VirtualDrive, "startup.nsh"), "w")
-- 
2.40.1



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Re: [edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[Ard Biesheuvel]

On Fri, 18 Aug 2023 at 20:17, Oliver Smith-Denny
<osde@linux.microsoft.com> wrote:
>
> Currently, unlike OVMF, ArmVirtQemu does not display any graphics,
> only the QEMU monitor. Graphics are helpful to confirm booting into
> an OS is successful, interacting with the EFI shell while getting
> separate logging messages, etc.
>
> This patch adds the QEMU parameters to launch a graphical window
> and add a USB keyboard and mouse, which is modeled as a tablet as
> it tracks better in QEMU than a generic mouse. virtio-gpu-pci is
> chosen as the graphics device as it is recommended by QEMU for the
> ARM virtual platform.
>
> The graphics and USB input devices will only be added to QEMU when
> QEMU_HEADLESS == FALSE, so CI builds will not attempt to use the
> graphics and if a user does not want graphics, they can add
> QEMU_HEADLESS=TRUE to the build cmdline.
>
> GitHub PR: https://github.com/tianocore/edk2/pull/4750
>
> Cc: Leif Lindholm <quic_llindhol@quicinc.com>
> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
> Cc: Sami Mujawar <sami.mujawar@arm.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
>
> Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>

Feel free to remind me to queue this up after the stable tag release.


> ---
>  ArmVirtPkg/PlatformCI/PlatformBuildLib.py | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/ArmVirtPkg/PlatformCI/PlatformBuildLib.py b/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
> index 405817cae785..0ddaccf9c21f 100644
> --- a/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
> +++ b/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
> @@ -244,6 +244,11 @@ class PlatformBuilder(UefiBuilder, BuildSettingsManager):
>          # Conditional Args
>          if (self.env.GetValue("QEMU_HEADLESS").upper() == "TRUE"):
>              args += " -display none"  # no graphics
> +        else:
> +            args += " -device virtio-gpu-pci"                         # add recommended QEMU graphics device
> +            args += " -device qemu-xhci,id=usb"                       # add USB support for below devices
> +            args += " -device usb-tablet,id=input0,bus=usb.0,port=1"  # add a usb mouse
> +            args += " -device usb-kbd,id=input1,bus=usb.0,port=2"     # add a usb keyboard
>
>          if (self.env.GetValue("MAKE_STARTUP_NSH").upper() == "TRUE"):
>              f = open(os.path.join(VirtualDrive, "startup.nsh"), "w")
> --
> 2.40.1
>


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Re: [edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[Marcin Juszkiewicz]

W dniu 18.08.2023 o 20:17, Oliver Smith-Denny pisze:
> Currently, unlike OVMF, ArmVirtQemu does not display any graphics, only 
> the QEMU monitor. Graphics are helpful to confirm booting into an OS is 
> successful, interacting with the EFI shell while getting separate 
> logging messages, etc.

Ah, that "but on x86 it is different" again ;D

I asked QEMU (and libvirt) devs in past why AArch64/virt lacks USB while 
both x86/pc and x86/q35 have it. The answer was something like "it was a 
mistake we do not plan to repeat". And hint that whatever uses either 
QEMU or libvirt should take care of adding hardware they expect.

Took me a while to convince OpenStack Nova people that it is not 
QEMU/libvirt fault ;D


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Re: [edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[Pedro Falcato]

On Sat, Aug 19, 2023 at 8:39 PM Marcin Juszkiewicz
<marcin.juszkiewicz@linaro.org> wrote:
>
> W dniu 18.08.2023 o 20:17, Oliver Smith-Denny pisze:
> > Currently, unlike OVMF, ArmVirtQemu does not display any graphics, only
> > the QEMU monitor. Graphics are helpful to confirm booting into an OS is
> > successful, interacting with the EFI shell while getting separate
> > logging messages, etc.
>
> Ah, that "but on x86 it is different" again ;D
>
> I asked QEMU (and libvirt) devs in past why AArch64/virt lacks USB while
> both x86/pc and x86/q35 have it. The answer was something like "it was a
> mistake we do not plan to repeat". And hint that whatever uses either
> QEMU or libvirt should take care of adding hardware they expect.

I don't think x86 having USB was a mistake. PIIX4 (the "pc" machine)
already had USB 1.0, Q35 (ICH9) had USB 2.0 too. Not emulating those
automatically would be a mistake from the faithfulness PoV. If they
wanted to have a bare board, the option of just adding a virt board
variant with the bare minimum (PCIe and ACPI, like arm64 and riscv64
do) is a fine idea.

(the same thing applies to other x86-but-not-the-others things like
VGA, etc. worse for VGA, it's more or less required to be there for a
PC-compatible board).

--
Pedro


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Re: [edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[Gerd Hoffmann]

On Sat, Aug 19, 2023 at 11:10:07PM +0100, Pedro Falcato wrote:
> On Sat, Aug 19, 2023 at 8:39 PM Marcin Juszkiewicz
> <marcin.juszkiewicz@linaro.org> wrote:
> >
> > W dniu 18.08.2023 o 20:17, Oliver Smith-Denny pisze:
> > > Currently, unlike OVMF, ArmVirtQemu does not display any graphics, only
> > > the QEMU monitor. Graphics are helpful to confirm booting into an OS is
> > > successful, interacting with the EFI shell while getting separate
> > > logging messages, etc.
> >
> > Ah, that "but on x86 it is different" again ;D
> >
> > I asked QEMU (and libvirt) devs in past why AArch64/virt lacks USB while
> > both x86/pc and x86/q35 have it. The answer was something like "it was a
> > mistake we do not plan to repeat". And hint that whatever uses either
> > QEMU or libvirt should take care of adding hardware they expect.
> 
> I don't think x86 having USB was a mistake. PIIX4 (the "pc" machine)
> already had USB 1.0, Q35 (ICH9) had USB 2.0 too. Not emulating those
> automatically would be a mistake from the faithfulness PoV. If they
> wanted to have a bare board, the option of just adding a virt board
> variant with the bare minimum (PCIe and ACPI, like arm64 and riscv64
> do) is a fine idea.

x86 microvm is very close to arm virt.
There is even a ovmf variant for it ;)

take care,
  Gerd



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Re: [edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[Leif Lindholm]

On 2023-08-19 23:10, Pedro Falcato wrote:
>> W dniu 18.08.2023 o 20:17, Oliver Smith-Denny pisze:
>>> Currently, unlike OVMF, ArmVirtQemu does not display any graphics, only
>>> the QEMU monitor. Graphics are helpful to confirm booting into an OS is
>>> successful, interacting with the EFI shell while getting separate
>>> logging messages, etc.
>>
>> Ah, that "but on x86 it is different" again ;D
>>
>> I asked QEMU (and libvirt) devs in past why AArch64/virt lacks USB while
>> both x86/pc and x86/q35 have it. The answer was something like "it was a
>> mistake we do not plan to repeat". And hint that whatever uses either
>> QEMU or libvirt should take care of adding hardware they expect.
> 
> I don't think x86 having USB was a mistake. PIIX4 (the "pc" machine)
> already had USB 1.0, Q35 (ICH9) had USB 2.0 too. Not emulating those
> automatically would be a mistake from the faithfulness PoV. If they
> wanted to have a bare board, the option of just adding a virt board
> variant with the bare minimum (PCIe and ACPI, like arm64 and riscv64
> do) is a fine idea.
> 
> (the same thing applies to other x86-but-not-the-others things like
> VGA, etc. worse for VGA, it's more or less required to be there for a
> PC-compatible board).

Yes. The problem is that this attitude results in non-trivial cognitive 
load for enabling existing workflows on !x86 platforms, making it harder 
to get random projects out there to verify things properly on them.

/
     Leif



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Re: [edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[Oliver Smith-Denny]

Gentle reminder on this now that the stable tag has passed.

Thanks,
Oliver

On 8/18/2023 2:05 PM, Ard Biesheuvel wrote:
> On Fri, 18 Aug 2023 at 20:17, Oliver Smith-Denny
> <osde@linux.microsoft.com> wrote:
>>
>> Currently, unlike OVMF, ArmVirtQemu does not display any graphics,
>> only the QEMU monitor. Graphics are helpful to confirm booting into
>> an OS is successful, interacting with the EFI shell while getting
>> separate logging messages, etc.
>>
>> This patch adds the QEMU parameters to launch a graphical window
>> and add a USB keyboard and mouse, which is modeled as a tablet as
>> it tracks better in QEMU than a generic mouse. virtio-gpu-pci is
>> chosen as the graphics device as it is recommended by QEMU for the
>> ARM virtual platform.
>>
>> The graphics and USB input devices will only be added to QEMU when
>> QEMU_HEADLESS == FALSE, so CI builds will not attempt to use the
>> graphics and if a user does not want graphics, they can add
>> QEMU_HEADLESS=TRUE to the build cmdline.
>>
>> GitHub PR: https://github.com/tianocore/edk2/pull/4750
>>
>> Cc: Leif Lindholm <quic_llindhol@quicinc.com>
>> Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
>> Cc: Sami Mujawar <sami.mujawar@arm.com>
>> Cc: Gerd Hoffmann <kraxel@redhat.com>
>>
>> Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com>
> 
> Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
> 
> Feel free to remind me to queue this up after the stable tag release.
> 
> 
>> ---
>>   ArmVirtPkg/PlatformCI/PlatformBuildLib.py | 5 +++++
>>   1 file changed, 5 insertions(+)
>>
>> diff --git a/ArmVirtPkg/PlatformCI/PlatformBuildLib.py b/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
>> index 405817cae785..0ddaccf9c21f 100644
>> --- a/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
>> +++ b/ArmVirtPkg/PlatformCI/PlatformBuildLib.py
>> @@ -244,6 +244,11 @@ class PlatformBuilder(UefiBuilder, BuildSettingsManager):
>>           # Conditional Args
>>           if (self.env.GetValue("QEMU_HEADLESS").upper() == "TRUE"):
>>               args += " -display none"  # no graphics
>> +        else:
>> +            args += " -device virtio-gpu-pci"                         # add recommended QEMU graphics device
>> +            args += " -device qemu-xhci,id=usb"                       # add USB support for below devices
>> +            args += " -device usb-tablet,id=input0,bus=usb.0,port=1"  # add a usb mouse
>> +            args += " -device usb-kbd,id=input1,bus=usb.0,port=2"     # add a usb keyboard
>>
>>           if (self.env.GetValue("MAKE_STARTUP_NSH").upper() == "TRUE"):
>>               f = open(os.path.join(VirtualDrive, "startup.nsh"), "w")
>> --
>> 2.40.1
>>
> 
> 
> 
> 


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Re: [edk2-devel][PATCH v1 1/1] ArmVirtPkg: ArmVirtQemu: Add Graphics and Input

[Ard Biesheuvel]

On Tue, 5 Sept 2023 at 18:05, Oliver Smith-Denny
<osde@linux.microsoft.com> wrote:
>
> Gentle reminder on this now that the stable tag has passed.
>

Thanks for the reminder.

Merging as #4790


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