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6c22e534 BS |
1 | /** @file\r |
2 | A hook-in library for MdeModulePkg/Bus/Pci/PciHostBridgeDxe.\r | |
3 | \r | |
4 | Plugging this library instance into PciHostBridgeDxe makes\r | |
5 | PciHostBridgeDxe depend on the platform's dynamic decision whether\r | |
6 | to provide IOMMU implementation (usually through IoMmuDxe driver).\r | |
7 | \r | |
8 | Copyright (C) 2017, Red Hat, Inc.\r | |
9 | Copyright (C) 2017, AMD, Inc.\r | |
10 | \r | |
b26f0cf9 | 11 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
6c22e534 BS |
12 | **/\r |
13 | \r | |
14 | #include <Base.h>\r | |
15 | \r | |
16 | RETURN_STATUS\r | |
17 | EFIAPI\r | |
18 | PlatformHasIoMmuInitialize (\r | |
19 | VOID\r | |
20 | )\r | |
21 | {\r | |
22 | //\r | |
23 | // Do nothing, just imbue PciHostBridgeDxe with a protocol dependency on\r | |
24 | // gIoMmuAbsentProtocolGuid OR gEdkiiIoMmuProtocolGuid.\r | |
25 | //\r | |
26 | return RETURN_SUCCESS;\r | |
27 | }\r |