Hi, so i have parsed the structure as follow :
*BootVariable = mGetVariable(Name, &gEfiGlobalVariableGuid, &BootVariableSize, NULL);LDAttr = BootVariable[0];FilePathListLength = (BootVariable+2);Ptr = (BootVariable+3); // for description * *for FilePathList[] Ptr+= StrSize((CHAR16 *)Ptr); CopyMem (Ptr, DevicePath, *FilePathListLength);* I am able to get LDAttr ,FilePathListLength and description but when i try to check DevicePath->Type it always return 0x01( Hardware Device Path) for each device . I have hard drive with legacy OS(BBS_DEVICE_PATH). So it should not always return 0x01 .What i am doing wrong in parsing ? Thanks On Tue, Oct 18, 2016 at 11:37 PM, Andrew Fish <af...@apple.com> wrote: > > > On Oct 18, 2016, at 10:40 AM, Laszlo Ersek <ler...@redhat.com> wrote: > > > > On 10/18/16 19:18, Saqib Khan wrote: > >> Hi, > >> I can not find structure of BOOTXXXX variable, Can any one help how to > >> extract device path from BOOTXXXX variable. > > > > In UEFI-related questions, the UEFI specification has a fair chance to > > provide useful information. > > > > Please refer to "3.1.3 Load Options" in the UEFI v2.6 spec, available > > for download from <http://www.uefi.org/specifications>. > > > > Locating the matching structure definition in the edk2 tree is left as > > an exercise to the reader ;) > > > > Chapter 3 Boot Manager. > > The structure is EFI_LOAD_OPTION but some of the fields are variable > length so you have to do math to figure stuff out. > > Thanks, > > Andrew Fish > > > > Laszlo > > > > _______________________________________________ > > edk2-devel mailing list > > edk2-devel@lists.01.org > > https://lists.01.org/mailman/listinfo/edk2-devel > > -- Regards Saqib Ahmed Khanzada _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
