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bf231ea6 1/** @file\r
37f259c9 2 PEI Services Table Pointer Library implementation for IPF that uses Kernel\r
bf231ea6 3 Register 7 to store the pointer.\r
c7d265a9 4\r
bf231ea6 5 Copyright (c) 2006 - 2007, Intel Corporation.<BR>\r
37f259c9 6 All rights reserved. This program and the accompanying materials\r
7 are licensed and made available under the terms and conditions of the BSD License\r
8 which accompanies this distribution. The full text of the license may be found at\r
9 http://opensource.org/licenses/bsd-license.php\r
c7d265a9 10\r
37f259c9 11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
c7d265a9 13\r
bf231ea6 14**/\r
c7d265a9 15\r
37f259c9 16#include <PiPei.h>\r
c7d265a9 17#include <Library/BaseLib.h>\r
37f259c9 18#include <Library/DebugLib.h>\r
c7d265a9 19\r
20/**\r
21 The function returns the pointer to PeiServices.\r
22\r
23 The function returns the pointer to PeiServices.\r
24 It will ASSERT() if the pointer to PeiServices is NULL.\r
25\r
373b5cf9 26 @return The pointer to PeiServices.\r
c7d265a9 27\r
28**/\r
29EFI_PEI_SERVICES **\r
30EFIAPI\r
31GetPeiServicesTablePointer (\r
32 VOID\r
33 )\r
34{\r
35 EFI_PEI_SERVICES **PeiServices;\r
36\r
37 PeiServices = (EFI_PEI_SERVICES **)(UINTN)AsmReadKr7 ();\r
38 ASSERT (PeiServices != NULL);\r
39 return PeiServices;\r
40}\r
41\r
10e53a28 42/**\r
43 The constructor function caches the pointer to PEI services.\r
44\r
45 The constructor function caches the pointer to PEI services.\r
46 It will always return EFI_SUCCESS.\r
47\r
48 @param FfsHeader Pointer to FFS header the loaded driver.\r
49 @param PeiServices Pointer to the PEI services.\r
50\r
51 @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r
52\r
53**/\r
54EFI_STATUS\r
55EFIAPI\r
56PeiServicesTablePointerLibConstructor (\r
c6f4d4c9 57 IN EFI_PEI_FILE_HANDLE *FfsHeader,\r
10e53a28 58 IN EFI_PEI_SERVICES **PeiServices\r
59 )\r
60{\r
61 AsmWriteKr7 ((UINT64)(UINTN)PeiServices);\r
62 return EFI_SUCCESS;\r
63}\r
64\r
61296d0d 65/**\r
66 The function set the pointer of PEI services immediately preceding the IDT table\r
67 according to PI specification.\r
68 \r
69 @param PeiServices The address of PeiServices pointer.\r
70**/\r
71VOID\r
72EFIAPI\r
73SetPeiServicesTablePointer (\r
74 EFI_PEI_SERVICES ** PeiServicesTablePointer\r
75 )\r
76{\r
58dcdada 77 AsmWriteKr7 ((UINT64)(UINTN)PeiServicesTablePointer);\r
61296d0d 78}\r
79 \r
58dcdada 80\r
81c7803c 81\r
10e53a28 82\r