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65e79f93 JF |
1 | /** @file |
2 | CPU PEI Module installs CPU Multiple Processor PPI. | |
3 | ||
4 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR> | |
5 | This program and the accompanying materials | |
6 | are licensed and made available under the terms and conditions of the BSD License | |
7 | which accompanies this distribution. The full text of the license may be found at | |
8 | http://opensource.org/licenses/bsd-license.php | |
9 | ||
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | ||
13 | **/ | |
14 | ||
15 | #include "CpuMpPei.h" | |
16 | ||
f9d30595 JF |
17 | // |
18 | // Global Descriptor Table (GDT) | |
19 | // | |
20 | GLOBAL_REMOVE_IF_UNREFERENCED IA32_GDT mGdtEntries[] = { | |
21 | /* selector { Global Segment Descriptor } */ | |
22 | /* 0x00 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //null descriptor | |
23 | /* 0x08 */ {{0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //linear data segment descriptor | |
24 | /* 0x10 */ {{0xffff, 0, 0, 0xf, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //linear code segment descriptor | |
25 | /* 0x18 */ {{0xffff, 0, 0, 0x3, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system data segment descriptor | |
26 | /* 0x20 */ {{0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system code segment descriptor | |
27 | /* 0x28 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //spare segment descriptor | |
28 | /* 0x30 */ {{0xffff, 0, 0, 0x2, 1, 0, 1, 0xf, 0, 0, 1, 1, 0}}, //system data segment descriptor | |
29 | /* 0x38 */ {{0xffff, 0, 0, 0xa, 1, 0, 1, 0xf, 0, 1, 0, 1, 0}}, //system code segment descriptor | |
30 | /* 0x40 */ {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, //spare segment descriptor | |
31 | }; | |
32 | ||
33 | // | |
34 | // IA32 Gdt register | |
35 | // | |
36 | GLOBAL_REMOVE_IF_UNREFERENCED IA32_DESCRIPTOR mGdt = { | |
37 | sizeof (mGdtEntries) - 1, | |
38 | (UINTN) mGdtEntries | |
39 | }; | |
40 | ||
65e79f93 JF |
41 | |
42 | /** | |
43 | The Entry point of the MP CPU PEIM. | |
44 | ||
45 | This function will wakeup APs and collect CPU AP count and install the | |
46 | Mp Service Ppi. | |
47 | ||
48 | @param FileHandle Handle of the file being invoked. | |
49 | @param PeiServices Describes the list of possible PEI Services. | |
50 | ||
51 | @retval EFI_SUCCESS MpServicePpi is installed successfully. | |
52 | ||
53 | **/ | |
54 | EFI_STATUS | |
55 | EFIAPI | |
56 | CpuMpPeimInit ( | |
57 | IN EFI_PEI_FILE_HANDLE FileHandle, | |
58 | IN CONST EFI_PEI_SERVICES **PeiServices | |
59 | ) | |
60 | { | |
61 | ||
62 | ||
f9d30595 JF |
63 | // |
64 | // Load new GDT table on BSP | |
65 | // | |
66 | AsmInitializeGdt (&mGdt); | |
65e79f93 JF |
67 | |
68 | return EFI_SUCCESS; | |
69 | } |