]>
Commit | Line | Data |
---|---|---|
7947da3c MK |
1 | /** @file\r |
2 | IA-32 processor specific functions to enable SMM profile.\r | |
3 | \r | |
717fb604 | 4 | Copyright (c) 2012 - 2016, Intel Corporation. All rights reserved.<BR>\r |
0acd8697 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
7947da3c MK |
6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include "PiSmmCpuDxeSmm.h"\r | |
10 | #include "SmmProfileInternal.h"\r | |
11 | \r | |
12 | /**\r | |
13 | Create SMM page table for S3 path.\r | |
14 | \r | |
15 | **/\r | |
16 | VOID\r | |
17 | InitSmmS3Cr3 (\r | |
18 | VOID\r | |
19 | )\r | |
20 | {\r | |
717fb604 | 21 | mSmmS3ResumeState->SmmS3Cr3 = Gen4GPageTable (TRUE);\r |
7947da3c | 22 | \r |
053e878b | 23 | return;\r |
7947da3c MK |
24 | }\r |
25 | \r | |
26 | /**\r | |
27 | Allocate pages for creating 4KB-page based on 2MB-page when page fault happens.\r | |
28 | 32-bit firmware does not need it.\r | |
29 | \r | |
30 | **/\r | |
31 | VOID\r | |
32 | InitPagesForPFHandler (\r | |
33 | VOID\r | |
34 | )\r | |
35 | {\r | |
36 | }\r | |
37 | \r | |
38 | /**\r | |
39 | Update page table to map the memory correctly in order to make the instruction\r | |
40 | which caused page fault execute successfully. And it also save the original page\r | |
41 | table to be restored in single-step exception. 32-bit firmware does not need it.\r | |
42 | \r | |
43 | @param PageTable PageTable Address.\r | |
44 | @param PFAddress The memory address which caused page fault exception.\r | |
45 | @param CpuIndex The index of the processor.\r | |
46 | @param ErrorCode The Error code of exception.\r | |
47 | @param IsValidPFAddress The flag indicates if SMM profile data need be added.\r | |
48 | \r | |
49 | **/\r | |
50 | VOID\r | |
51 | RestorePageTableAbove4G (\r | |
053e878b MK |
52 | UINT64 *PageTable,\r |
53 | UINT64 PFAddress,\r | |
54 | UINTN CpuIndex,\r | |
55 | UINTN ErrorCode,\r | |
56 | BOOLEAN *IsValidPFAddress\r | |
7947da3c MK |
57 | )\r |
58 | {\r | |
59 | }\r | |
60 | \r | |
61 | /**\r | |
62 | Clear TF in FLAGS.\r | |
63 | \r | |
64 | @param SystemContext A pointer to the processor context when\r | |
65 | the interrupt occurred on the processor.\r | |
66 | \r | |
67 | **/\r | |
68 | VOID\r | |
69 | ClearTrapFlag (\r | |
053e878b | 70 | IN OUT EFI_SYSTEM_CONTEXT SystemContext\r |
7947da3c MK |
71 | )\r |
72 | {\r | |
73 | SystemContext.SystemContextIa32->Eflags &= (UINTN) ~BIT8;\r | |
74 | }\r |