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| author | Laszlo Ersek <lersek@redhat.com> | 2020-12-16 22:10:40 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2020-12-21 17:16:23 +0000 |
| commit | b55d6622d4f4d795d71e930da1fcda7c78a7fe96 (patch) | |
| tree | 51c7fd519a83ae90aa4ec61cbd6d56ecce0e2eec /OvmfPkg/VirtioFsDxe/SimpleFsOpenVolume.c | |
| parent | fbc3e1267a430a20e8909ae8a6dfe1b98de9b7bc (diff) | |
| download | edk2-b55d6622d4f4d795d71e930da1fcda7c78a7fe96.tar.gz edk2-b55d6622d4f4d795d71e930da1fcda7c78a7fe96.tar.bz2 edk2-b55d6622d4f4d795d71e930da1fcda7c78a7fe96.zip | |
OvmfPkg/VirtioFsDxe: DriverBinding: open VirtioDevice, install SimpleFs
Complete the Supported, Start, and Stop member functions of
EFI_DRIVER_BINDING_PROTOCOL sufficiently for exercising the UEFI driver
model:
- bind virtio-fs devices,
- produce placeholder EFI_SIMPLE_FILE_SYSTEM_PROTOCOL instances on them.
On the "TO_START" (= Virtio) side, the VirtioFsBindingSupported() function
verifies the Virtio subsystem ID for the virtio-fs device (decimal 26 --
see
<https://github.com/oasis-tcs/virtio-spec/blob/87fa6b5d8155/virtio-fs.tex>).
Beyond that, no actual Virtio setup is performed for now. Those bits are
going to be implemented later in this series.
On the "BY_START" (= UEFI filesystem) side, the VirtioFsOpenVolume()
function -- which is the sole EFI_SIMPLE_FILE_SYSTEM_PROTOCOL member
function -- is a stub; it always returns EFI_NO_MEDIA, for now.
The "CONNECT", "DISCONNECT", and "MAP -R" UEFI Shell commands can be used
to test this patch.
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3097
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20201216211125.19496-4-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Diffstat (limited to 'OvmfPkg/VirtioFsDxe/SimpleFsOpenVolume.c')
| -rw-r--r-- | OvmfPkg/VirtioFsDxe/SimpleFsOpenVolume.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/OvmfPkg/VirtioFsDxe/SimpleFsOpenVolume.c b/OvmfPkg/VirtioFsDxe/SimpleFsOpenVolume.c new file mode 100644 index 0000000000..a5a66a27d8 --- /dev/null +++ b/OvmfPkg/VirtioFsDxe/SimpleFsOpenVolume.c @@ -0,0 +1,26 @@ +/** @file
+ EFI_SIMPLE_FILE_SYSTEM_PROTOCOL.OpenVolume() member function for the Virtio
+ Filesystem driver.
+
+ Copyright (C) 2020, Red Hat, Inc.
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include "VirtioFsDxe.h"
+
+/**
+ Open the root directory on the Virtio Filesystem.
+
+ Refer to EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_OPEN_VOLUME for the interface
+ contract.
+**/
+EFI_STATUS
+EFIAPI
+VirtioFsOpenVolume (
+ IN EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *This,
+ OUT EFI_FILE_PROTOCOL **Root
+ )
+{
+ return EFI_NO_MEDIA;
+}
|