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Last change
on this file since 94368 was 80721, checked in by vboxsync, 5 years ago |
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Devices/EFI/FirmwareNew: Start upgrade process to edk2-stable201908 (compiles on Windows and works to some extent), bugref:4643
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Property svn:eol-style
set to
native
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File size:
1.0 KB
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| 1 | /** @file
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| 2 |
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| 3 | Driver for the XenIo protocol
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| 4 |
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| 5 | This driver simply allocate space for the grant tables.
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| 6 |
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| 7 | Copyright (c) 2019, Citrix Systems, Inc.
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| 8 |
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| 9 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 10 |
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| 11 | **/
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| 12 |
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| 13 | #include <Library/MemoryAllocationLib.h>
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| 14 | #include <Library/PcdLib.h>
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| 15 | #include <Library/XenIoMmioLib.h>
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| 16 | #include <Library/XenPlatformLib.h>
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| 17 |
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| 18 | EFI_STATUS
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| 19 | EFIAPI
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| 20 | InitializeXenIoPvhDxe (
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| 21 | IN EFI_HANDLE ImageHandle,
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| 22 | IN EFI_SYSTEM_TABLE *SystemTable
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| 23 | )
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| 24 | {
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| 25 | VOID *Allocation;
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| 26 | EFI_STATUS Status;
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| 27 | EFI_HANDLE XenIoHandle;
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| 28 |
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| 29 | Allocation = NULL;
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| 30 | XenIoHandle = NULL;
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| 31 |
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| 32 | if (!XenPvhDetected ()) {
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| 33 | return EFI_UNSUPPORTED;
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| 34 | }
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| 35 |
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| 36 | Allocation = AllocateReservedPages (FixedPcdGet32 (PcdXenGrantFrames));
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| 37 | if (Allocation == NULL) {
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| 38 | Status = EFI_OUT_OF_RESOURCES;
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| 39 | goto Error;
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| 40 | }
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| 41 |
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| 42 | Status = XenIoMmioInstall (&XenIoHandle, (UINTN) Allocation);
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| 43 | if (EFI_ERROR (Status)) {
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| 44 | goto Error;
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| 45 | }
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| 46 |
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| 47 | return EFI_SUCCESS;
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| 48 |
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| 49 | Error:
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| 50 | if (Allocation != NULL) {
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| 51 | FreePages (Allocation, FixedPcdGet32 (PcdXenGrantFrames));
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| 52 | }
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| 53 | return Status;
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| 54 | }
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