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4259256b | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2006 - 2008 Intel Corporation. <BR>\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | Module Name:\r | |
12 | \r | |
13 | Variable.c\r | |
14 | \r | |
15 | Abstract:\r | |
16 | \r | |
17 | PEIM to provide the Variable functionality\r | |
18 | \r | |
19 | --*/\r | |
20 | \r | |
21 | #include <PiPei.h>\r | |
22 | #include <Ppi/PciCfg.h>\r | |
23 | #include <Ppi/PciCfg2.h>\r | |
24 | #include <Ppi/EcpPciCfg.h>\r | |
25 | #include <Library/DebugLib.h>\r | |
26 | \r | |
27 | //\r | |
28 | // Function Prototypes - Callbacks\r | |
29 | //\r | |
30 | EFI_STATUS\r | |
31 | EFIAPI\r | |
32 | EcpPciCfgPpiNotifyCallback (\r | |
33 | IN EFI_PEI_SERVICES **PeiServices,\r | |
34 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r | |
35 | IN VOID *Ppi\r | |
36 | );\r | |
37 | \r | |
38 | //\r | |
39 | // Function Prototypes\r | |
40 | //\r | |
41 | EFI_STATUS\r | |
42 | EFIAPI\r | |
43 | PciCfg2Read (\r | |
44 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
45 | IN CONST EFI_PEI_PCI_CFG2_PPI *This,\r | |
46 | IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r | |
47 | IN UINT64 Address,\r | |
48 | IN OUT VOID *Buffer\r | |
49 | );\r | |
50 | \r | |
51 | EFI_STATUS\r | |
52 | EFIAPI\r | |
53 | PciCfg2Write (\r | |
54 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
55 | IN CONST EFI_PEI_PCI_CFG2_PPI *This,\r | |
56 | IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r | |
57 | IN UINT64 Address,\r | |
58 | IN OUT VOID *Buffer\r | |
59 | );\r | |
60 | \r | |
61 | EFI_STATUS\r | |
62 | EFIAPI\r | |
63 | PciCfg2Modify (\r | |
64 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
65 | IN CONST EFI_PEI_PCI_CFG2_PPI *This,\r | |
66 | IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r | |
67 | IN UINT64 Address,\r | |
68 | IN CONST VOID *SetBits,\r | |
69 | IN CONST VOID *ClearBits\r | |
70 | );\r | |
71 | \r | |
72 | //\r | |
73 | // Module globals\r | |
74 | //\r | |
75 | EFI_PEI_NOTIFY_DESCRIPTOR mNotifyOnEcpPciCfgList = {\r | |
76 | (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
77 | &gEcpPeiPciCfgPpiGuid,\r | |
78 | EcpPciCfgPpiNotifyCallback \r | |
79 | };\r | |
80 | \r | |
81 | EFI_PEI_PCI_CFG2_PPI mPciCfg2Ppi = {\r | |
82 | PciCfg2Read,\r | |
83 | PciCfg2Write,\r | |
84 | PciCfg2Modify,\r | |
85 | 0\r | |
86 | };\r | |
87 | \r | |
88 | EFI_PEI_PPI_DESCRIPTOR mPpiListPciCfg2 = {\r | |
89 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
90 | &gEfiPciCfg2PpiGuid,\r | |
91 | &mPciCfg2Ppi\r | |
92 | };\r | |
93 | \r | |
94 | \r | |
95 | EFI_STATUS\r | |
96 | EFIAPI\r | |
97 | PeimInitializePciCfg2 (\r | |
98 | IN EFI_FFS_FILE_HEADER *FfsHeader,\r | |
99 | IN CONST EFI_PEI_SERVICES **PeiServices\r | |
100 | )\r | |
101 | /*++\r | |
102 | \r | |
103 | Routine Description:\r | |
104 | \r | |
105 | Provide the functionality of the variable services.\r | |
106 | \r | |
107 | Arguments:\r | |
108 | \r | |
109 | FfsHeadher - The FFS file header\r | |
110 | PeiServices - General purpose services available to every PEIM.\r | |
111 | \r | |
112 | Returns:\r | |
113 | \r | |
114 | Status - EFI_SUCCESS if the interface could be successfully\r | |
115 | installed\r | |
116 | \r | |
117 | --*/\r | |
118 | {\r | |
119 | EFI_STATUS Status;\r | |
120 | \r | |
121 | //\r | |
122 | // Register a notification for ECP PCI CFG PPI\r | |
123 | //\r | |
124 | Status = (*PeiServices)->NotifyPpi (PeiServices, &mNotifyOnEcpPciCfgList);\r | |
125 | ASSERT_EFI_ERROR (Status);\r | |
126 | return Status;\r | |
127 | }\r | |
128 | \r | |
129 | EFI_STATUS\r | |
130 | EFIAPI\r | |
131 | EcpPciCfgPpiNotifyCallback (\r | |
132 | IN EFI_PEI_SERVICES **PeiServices,\r | |
133 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,\r | |
134 | IN VOID *Ppi\r | |
135 | )\r | |
136 | {\r | |
137 | //\r | |
138 | // When ECP PCI CFG PPI is installed, publish the PCI CFG2 PPI in the \r | |
139 | // PEI Services Table and the PPI database\r | |
140 | //\r | |
141 | (*PeiServices)->PciCfg = &mPciCfg2Ppi;\r | |
142 | return (*PeiServices)->InstallPpi ((CONST EFI_PEI_SERVICES **)PeiServices, &mPpiListPciCfg2);\r | |
143 | }\r | |
144 | \r | |
145 | EFI_STATUS\r | |
146 | EFIAPI\r | |
147 | PciCfg2Read (\r | |
148 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
149 | IN CONST EFI_PEI_PCI_CFG2_PPI *This,\r | |
150 | IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r | |
151 | IN UINT64 Address,\r | |
152 | IN OUT VOID *Buffer\r | |
153 | )\r | |
154 | {\r | |
155 | EFI_STATUS Status;\r | |
156 | EFI_PEI_PCI_CFG_PPI *PciCfg;\r | |
157 | \r | |
158 | Status = (*PeiServices)->LocatePpi (\r | |
159 | PeiServices,\r | |
160 | &gEcpPeiPciCfgPpiGuid,\r | |
161 | 0,\r | |
162 | NULL,\r | |
163 | (VOID **)&PciCfg\r | |
164 | );\r | |
165 | ASSERT_EFI_ERROR (Status);\r | |
166 | \r | |
167 | return PciCfg->Read ((EFI_PEI_SERVICES **)PeiServices, PciCfg, Width, Address, Buffer);\r | |
168 | }\r | |
169 | \r | |
170 | EFI_STATUS\r | |
171 | EFIAPI\r | |
172 | PciCfg2Write (\r | |
173 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
174 | IN CONST EFI_PEI_PCI_CFG2_PPI *This,\r | |
175 | IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r | |
176 | IN UINT64 Address,\r | |
177 | IN OUT VOID *Buffer\r | |
178 | )\r | |
179 | {\r | |
180 | EFI_STATUS Status;\r | |
181 | EFI_PEI_PCI_CFG_PPI *PciCfg;\r | |
182 | \r | |
183 | Status = (*PeiServices)->LocatePpi (\r | |
184 | PeiServices,\r | |
185 | &gEcpPeiPciCfgPpiGuid,\r | |
186 | 0,\r | |
187 | NULL,\r | |
188 | (VOID **)&PciCfg\r | |
189 | );\r | |
190 | ASSERT_EFI_ERROR (Status);\r | |
191 | \r | |
192 | return PciCfg->Write ((EFI_PEI_SERVICES **)PeiServices, PciCfg, Width, Address, Buffer);\r | |
193 | }\r | |
194 | \r | |
195 | EFI_STATUS\r | |
196 | EFIAPI\r | |
197 | PciCfg2Modify (\r | |
198 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
199 | IN CONST EFI_PEI_PCI_CFG2_PPI *This,\r | |
200 | IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,\r | |
201 | IN UINT64 Address,\r | |
202 | IN CONST VOID *SetBits,\r | |
203 | IN CONST VOID *ClearBits\r | |
204 | )\r | |
205 | {\r | |
206 | EFI_STATUS Status;\r | |
207 | EFI_PEI_PCI_CFG_PPI *PciCfg;\r | |
208 | \r | |
209 | Status = (*PeiServices)->LocatePpi (\r | |
210 | PeiServices,\r | |
211 | &gEcpPeiPciCfgPpiGuid,\r | |
212 | 0,\r | |
213 | NULL,\r | |
214 | (VOID **)&PciCfg\r | |
215 | );\r | |
216 | ASSERT_EFI_ERROR (Status);\r | |
217 | \r | |
218 | return PciCfg->Modify ((EFI_PEI_SERVICES **)PeiServices, PciCfg, Width, Address, *(UINTN *)SetBits, *(UINTN *)ClearBits);\r | |
219 | }\r |