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OvmfPkg: add GUID for the QEMU kernel loader fs media device path 

In an upcoming patch, we will introduce a separate DXE driver that
exposes the virtual SimpleFileSystem implementation that carries the
kernel and initrd passed via the QEMU command line, and a separate
library that consumes it, to be incorporated into the boot manager.

Since the GUID used for the SimpleFileSystem implementation's device
path will no longer be for internal use only, create a well defined
GUID to identify the media device path.

Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2566
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Ard Biesheuvel 2020-02-28 14:13:03 +01:00 committed by mergify[bot]
parent 7288ff4095
commit 6ae2d31ca2
2 changed files with 19 additions and 0 deletions
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18
OvmfPkg/Include/Guid/QemuKernelLoaderFsMedia.h Normal file
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@ -0,0 +1,18 @@
/** @file
GUID definition for the QEMU LoaderFs media device path, containing the
kernel, initrd and command line as file objects
Copyright (c) 2020, Arm, Ltd. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef QEMU_KERNEL_LOADER_FS_MEDIA_GUID_H__
#define QEMU_KERNEL_LOADER_FS_MEDIA_GUID_H__
#define QEMU_KERNEL_LOADER_FS_MEDIA_GUID \
{0x1428f772, 0xb64a, 0x441e, {0xb8, 0xc3, 0x9e, 0xbd, 0xd7, 0xf8, 0x93, 0xc7}}
extern EFI_GUID gQemuKernelLoaderFsMediaGuid;
#endif

1
OvmfPkg/OvmfPkg.dec
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@ -87,6 +87,7 @@
gEfiLegacyBiosGuid = {0x2E3044AC, 0x879F, 0x490F, {0x97, 0x60, 0xBB, 0xDF, 0xAF, 0x69, 0x5F, 0x50}}
gEfiLegacyDevOrderVariableGuid = {0xa56074db, 0x65fe, 0x45f7, {0xbd, 0x21, 0x2d, 0x2b, 0xdd, 0x8e, 0x96, 0x52}}
gLinuxEfiInitrdMediaGuid = {0x5568e427, 0x68fc, 0x4f3d, {0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68}}
gQemuKernelLoaderFsMediaGuid = {0x1428f772, 0xb64a, 0x441e, {0xb8, 0xc3, 0x9e, 0xbd, 0xd7, 0xf8, 0x93, 0xc7}}
[Ppis]
# PPI whose presence in the PPI database signals that the TPM base address