On Thu, 6 Jul 2023 at 17:31, Gerd Hoffmann <kra...@redhat.com> wrote:
>
> Add DetectAndPreparePlatformVirtioDevicePath() helper function
> to setup virtio-mmio devices. Start with virtio-serial support.
>
> This makes virtio console usable with microvm.
>
> Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
Acked-by: Ard Biesheuvel <a...@kernel.org>
I'll queue this up
> ---
> .../PlatformBootManagerLib.inf | 1 +
> .../PlatformBootManagerLib/BdsPlatform.c | 31 +++++++++++++++++++
> 2 files changed, 32 insertions(+)
>
> diff --git
> a/OvmfPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> b/OvmfPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> index 6b396eac7daf..c6ffc1ed9ed5 100644
> --- a/OvmfPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> +++ b/OvmfPkg/Library/PlatformBootManagerLib/PlatformBootManagerLib.inf
> @@ -75,6 +75,7 @@ [Pcd.IA32, Pcd.X64]
> [Protocols]
> gEfiDecompressProtocolGuid
> gEfiPciRootBridgeIoProtocolGuid
> + gVirtioDeviceProtocolGuid
> gEfiS3SaveStateProtocolGuid # PROTOCOL SOMETIMES_CONSUMED
> gEfiDxeSmmReadyToLockProtocolGuid # PROTOCOL SOMETIMES_PRODUCED
> gEfiLoadedImageProtocolGuid # PROTOCOL SOMETIMES_PRODUCED
> diff --git a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
> b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
> index 8dc2bbf97371..88c39df4aea9 100644
> --- a/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
> +++ b/OvmfPkg/Library/PlatformBootManagerLib/BdsPlatform.c
> @@ -10,6 +10,7 @@
> #include <Guid/RootBridgesConnectedEventGroup.h>
> #include <Guid/SerialPortLibVendor.h>
> #include <Protocol/FirmwareVolume2.h>
> +#include <Protocol/VirtioDevice.h>
> #include <Library/PlatformBmPrintScLib.h>
> #include <Library/Tcg2PhysicalPresenceLib.h>
> #include <Library/XenPlatformLib.h>
> @@ -1236,6 +1237,30 @@ DetectAndPreparePlatformPciDevicePath (
> return Status;
> }
>
> +EFI_STATUS
> +EFIAPI
> +DetectAndPreparePlatformVirtioDevicePath (
> + IN EFI_HANDLE Handle,
> + IN VOID *Instance,
> + IN VOID *Context
> + )
> +{
> + VIRTIO_DEVICE_PROTOCOL *VirtIo = (VIRTIO_DEVICE_PROTOCOL *)Instance;
> +
> + DEBUG ((DEBUG_INFO, "%a:%d: id %d\n", __func__, __LINE__,
> VirtIo->SubSystemDeviceId));
> +
> + switch (VirtIo->SubSystemDeviceId) {
> + case 3:
> + PrepareVirtioSerialDevicePath (Handle);
> + break;
> + default:
> + /* nothing */
> + break;
> + }
> +
> + return EFI_SUCCESS;
> +}
> +
> /**
> Connect the predefined platform default console device.
>
> @@ -1256,6 +1281,12 @@ PlatformInitializeConsole (
> //
> VisitAllPciInstances (DetectAndPreparePlatformPciDevicePath);
>
> + VisitAllInstancesOfProtocol (
> + &gVirtioDeviceProtocolGuid,
> + DetectAndPreparePlatformVirtioDevicePath,
> + NULL
> + );
> +
> PrepareMicrovmDevicePath ();
>
> //
> --
> 2.41.0
>
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