projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 880086a2 SV |
1 | /** @file\r |
| 2 | Internal ARCH Specific file of MM memory check library.\r | |
| 3 | \r | |
| 4 | MM memory check library implementation. This library consumes MM_ACCESS_PROTOCOL\r | |
| 5 | to get MMRAM information. In order to use this library instance, the platform should produce\r | |
| 6 | all MMRAM range via MM_ACCESS_PROTOCOL, including the range for firmware (like MM Core\r | |
| 7 | and MM driver) and/or specific dedicated hardware.\r | |
| 8 | \r | |
| 9 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
| 10 | Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>\r | |
| 11 | \r | |
| 86094561 | 12 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 880086a2 SV |
13 | \r |
| 14 | **/\r | |
| 15 | #include <Library/BaseLib.h>\r | |
| 16 | #include <Library/BaseMemoryLib.h>\r | |
| 17 | #include <Library/DebugLib.h>\r | |
| 18 | //\r | |
| 19 | // Maximum support address used to check input buffer\r | |
| 20 | //\r | |
| 21 | extern EFI_PHYSICAL_ADDRESS mMmMemLibInternalMaximumSupportAddress;\r | |
| 22 | \r | |
| 23 | /**\r | |
| 24 | Calculate and save the maximum support address.\r | |
| 25 | \r | |
| 26 | **/\r | |
| 27 | VOID\r | |
| 28 | MmMemLibInternalCalculateMaximumSupportAddress (\r | |
| 29 | VOID\r | |
| 30 | )\r | |
| 31 | {\r | |
| 32 | UINT8 PhysicalAddressBits;\r | |
| 33 | \r | |
| 34 | PhysicalAddressBits = 36;\r | |
| 35 | \r | |
| 36 | //\r | |
| 37 | // Save the maximum support address in one global variable\r | |
| 38 | //\r | |
| 39 | mMmMemLibInternalMaximumSupportAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)(LShiftU64 (1, PhysicalAddressBits) - 1);\r | |
| 40 | DEBUG ((DEBUG_INFO, "mMmMemLibInternalMaximumSupportAddress = 0x%lx\n", mMmMemLibInternalMaximumSupportAddress));\r | |
| 41 | }\r | |
| 42 | \r | |
| 43 | \r |