Ray, The idea of adding EFI_LOAD_OPTION structure to MdePkg .h files has been considered before.
This is not defined as a C data structure in the UEFI Specification. Instead, it is described as a binary buffer that must be parsed from beginning to end. I recommend we do not add this C data structure to UefiSpec.h. Best regards, Mike -----Original Message----- From: Ruiyu Ni [mailto:[email protected]] Sent: Monday, April 27, 2015 11:17 PM To: [email protected] Subject: [edk2] [Patch] MdePkg: Add EFI_LOAD_OPTION definition. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <[email protected]> Reviewed-by: Liming Gao <[email protected]> --- MdePkg/Include/Uefi/UefiSpec.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/MdePkg/Include/Uefi/UefiSpec.h b/MdePkg/Include/Uefi/UefiSpec.h index 64105c2..5e23694 100644 --- a/MdePkg/Include/Uefi/UefiSpec.h +++ b/MdePkg/Include/Uefi/UefiSpec.h @@ -2026,6 +2026,48 @@ EFI_STATUS ); // +// EFI Load Option +// +typedef struct _EFI_LOAD_OPTION { + /// + /// The attributes for this load option entry. All unused bits must be zero + /// and are reserved by the UEFI specification for future growth. + /// + UINT32 Attributes; + /// + /// Length in bytes of the FilePathList. OptionalData starts at offset + /// sizeof(UINT32) + sizeof(UINT16) + StrSize(Description) + FilePathListLength + /// of the EFI_LOAD_OPTION descriptor. + /// + UINT16 FilePathListLength; + /// + /// The user readable description for the load option. + /// This field ends with a Null character. + /// + // CHAR16 Description[]; + /// + /// A packed array of UEFI device paths. The first element of the array is a + /// device path that describes the device and location of the Image for this + /// load option. The FilePathList[0] is specific to the device type. Other + /// device paths may optionally exist in the FilePathList, but their usage is + /// OSV specific. Each element in the array is variable length, and ends at + /// the device path end structure. Because the size of Description is + /// arbitrary, this data structure is not guaranteed to be aligned on a + /// natural boundary. This data structure may have to be copied to an aligned + /// natural boundary before it is used. + /// + // EFI_DEVICE_PATH_PROTOCOL FilePathList[]; + /// + /// The remaining bytes in the load option descriptor are a binary data buffer + /// that is passed to the loaded image. If the field is zero bytes long, a + /// NULL pointer is passed to the loaded image. The number of bytes in + /// OptionalData can be computed by subtracting the starting offset of + /// OptionalData from total size in bytes of the EFI_LOAD_OPTION. + /// + // UINT8 OptionalData[]; +} EFI_LOAD_OPTION; + +// // EFI Load Options Attributes // #define LOAD_OPTION_ACTIVE 0x00000001 -- 1.9.5.msysgit.1 ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel
