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Is this GUID defined in an industry standard or public spec?
If not, then MdeModulePkg may be a better choice if this is a GUID defines for EDK II extensions.
Mike
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Jeff Brasen via groups.io
> Sent: Thursday, July 15, 2021 11:08 AM
> To: devel@edk2.groups.io
> Cc: ardb+tianocore@kernel.org; Kinney, Michael D <michael.d.kinney@intel.com>; Justen, Jordan L
> <jordan.l.justen@intel.com>; gaoliming@byosoft.com.cn; Liu, Zhiguang <zhiguang.liu@intel.com>; Jeff Brasen
> <jbrasen@nvidia.com>
> Subject: [edk2-devel] [PATCH 1/1] MdePkg: add definition of LINUX_EFI_INITRD_MEDIA_GUID
>
> Add LINUX_EFI_INITRD_MEDIA_GUID to our collection of GUID definitions,
> it can be used in a media device path to specify a Linux style initrd
> that can be loaded by the OS using the LoadFile2 protocol.
>
> Move these defines to MdePkg from OvmfPkg as these are relevant to
> non-OVMF targets as well.
>
> Ref:
https://bugzilla.tianocore.org/show_bug.cgi?id=2564
> Signed-off-by: Jeff Brasen <jbrasen@nvidia.com>
> ---
> MdePkg/MdePkg.dec | 5 +++++
> OvmfPkg/OvmfPkg.dec | 1 -
> {OvmfPkg => MdePkg}/Include/Guid/LinuxEfiInitrdMedia.h | 0
> 3 files changed, 5 insertions(+), 1 deletion(-)
> rename {OvmfPkg => MdePkg}/Include/Guid/LinuxEfiInitrdMedia.h (100%)
>
> diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
> index c5319fdd71ca..a28a2daaffa8 100644
> --- a/MdePkg/MdePkg.dec
> +++ b/MdePkg/MdePkg.dec
> @@ -818,6 +818,11 @@ [Guids]
> #
> gTianoCustomDecompressGuid = { 0xA31280AD, 0x481E, 0x41B6, { 0x95, 0xE8, 0x12, 0x7F, 0x4C, 0x98, 0x47, 0x79 }}
>
> + #
> + # GUID used to provide initrd to linux via LoadFile2 protocol
> + #
> + gLinuxEfiInitrdMediaGuid = {0x5568e427, 0x68fc, 0x4f3d, {0xac, 0x74, 0xca, 0x55, 0x52, 0x31, 0xcc, 0x68}}
> +
> [Guids.IA32, Guids.X64]
> ## Include/Guid/Cper.h
> gEfiIa32X64ErrorTypeCacheCheckGuid = { 0xA55701F5, 0xE3EF, 0x43de, { 0xAC, 0x72, 0x24, 0x9B, 0x57, 0x3F, 0xAD, 0x2C }}
> diff --git a/OvmfPkg/OvmfPkg.dec b/OvmfPkg/OvmfPkg.dec
> index 6ae733f6e39f..3153f5ae4540 100644
> --- a/OvmfPkg/OvmfPkg.dec
> +++ b/OvmfPkg/OvmfPkg.dec
> @@ -118,7 +118,6 @@ [Guids]
> gMicrosoftVendorGuid = {0x77fa9abd, 0x0359, 0x4d32, {0xbd, 0x60, 0x28, 0xf4, 0xe7, 0x8f, 0x78, 0x4b}}
> 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}}
> gGrubFileGuid = {0xb5ae312c, 0xbc8a, 0x43b1, {0x9c, 0x62, 0xeb, 0xb8, 0x26, 0xdd, 0x5d, 0x07}}
> gConfidentialComputingSecretGuid = {0xadf956ad, 0xe98c, 0x484c, {0xae, 0x11, 0xb5, 0x1c, 0x7d, 0x33, 0x64, 0x47}}
> diff --git a/OvmfPkg/Include/Guid/LinuxEfiInitrdMedia.h b/MdePkg/Include/Guid/LinuxEfiInitrdMedia.h
> similarity index 100%
> rename from OvmfPkg/Include/Guid/LinuxEfiInitrdMedia.h
> rename to MdePkg/Include/Guid/LinuxEfiInitrdMedia.h
> --
> 2.25.1
>
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