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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 | |
12 | This program and the accompanying materials\r | |
13 | are licensed and made available under the terms and conditions of the BSD License\r | |
14 | which accompanies this distribution. The full text of the license may be found at\r | |
15 | http://opensource.org/licenses/bsd-license.php\r | |
16 | \r | |
17 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
18 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
19 | \r | |
20 | **/\r | |
21 | #include <Library/BaseLib.h>\r | |
22 | #include <Library/BaseMemoryLib.h>\r | |
23 | #include <Library/DebugLib.h>\r | |
24 | //\r | |
25 | // Maximum support address used to check input buffer\r | |
26 | //\r | |
27 | extern EFI_PHYSICAL_ADDRESS mMmMemLibInternalMaximumSupportAddress;\r | |
28 | \r | |
29 | /**\r | |
30 | Calculate and save the maximum support address.\r | |
31 | \r | |
32 | **/\r | |
33 | VOID\r | |
34 | MmMemLibInternalCalculateMaximumSupportAddress (\r | |
35 | VOID\r | |
36 | )\r | |
37 | {\r | |
38 | UINT8 PhysicalAddressBits;\r | |
39 | \r | |
40 | PhysicalAddressBits = 36;\r | |
41 | \r | |
42 | //\r | |
43 | // Save the maximum support address in one global variable\r | |
44 | //\r | |
45 | mMmMemLibInternalMaximumSupportAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)(LShiftU64 (1, PhysicalAddressBits) - 1);\r | |
46 | DEBUG ((DEBUG_INFO, "mMmMemLibInternalMaximumSupportAddress = 0x%lx\n", mMmMemLibInternalMaximumSupportAddress));\r | |
47 | }\r | |
48 | \r | |
49 | \r |