Hello, I'm trying to find out why pxe boot with syslinux is failing on QEMU with OVMF. The problem is already described here in detail:
http://www.syslinux.org/archives/2014-November/022804.html Since it is reported to work on real hardware (presumably with a different UEFI implementation) I suspect a bug in OVMF. I've tried to debug it but could not get very far. Syslinux starts with this code (the whole function can be seen at http://git.kernel.org/cgit/boot/syslinux/syslinux.git/tree/efi/main.c#n1252): status = uefi_call_wrapper(BS->HandleProtocol, 3, image, &LoadedImageProtocol, (void **)&info); if (status != EFI_SUCCESS) { Print(L"Failed to lookup LoadedImageProtocol\n"); goto out; } status = uefi_call_wrapper(BS->HandleProtocol, 3, info->DeviceHandle, &PxeBaseCodeProtocol, (void **)&pxe); if (status != EFI_SUCCESS) { /* * Use device handle to set up the volume root to * proceed with ADV init. */ if (EFI_ERROR(efi_set_volroot(info->DeviceHandle))) { Print(L"Failed to locate root device to prep for "); Print(L"file operations & ADV initialization\n"); goto out; } efi_derivative(SYSLINUX_FS_SYSLINUX); ops[0] = &vfat_fs_ops; } else { efi_derivative(SYSLINUX_FS_PXELINUX); ops[0] = &pxe_fs_ops; } but it seems to fail to get the PxeBaseCode and takes the wrong path and trying to read from a vfat volume instead of pxe hence the error message about failing read blocks. If I force it to always use pxe it will fail at http://git.kernel.org/cgit/boot/syslinux/syslinux.git/tree/efi/pxe.c#n51 when trying to do: status = LibLocateHandle(ByProtocol, &PxeBaseCodeProtocol, NULL, &nr_handles, &handles); Does the above make sense to anyone with better understanding of edk2/Ovmf and could hint at why it fails? Any insight is greatly appreciated. Thank you, BALATON Zoltan ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
