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1 | /** @file\r |
2 | PCH SPI Runtime Driver implements the SPI Host Controller Compatibility Interface.\r | |
3 | \r | |
4 | Copyright (c) 2013-2015 Intel Corporation.\r | |
5 | \r | |
6 | 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 | |
10 | \r | |
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 | |
13 | \r | |
14 | **/\r | |
15 | #include "PchSpi.h"\r | |
16 | \r | |
17 | extern EFI_GUID gEfiEventVirtualAddressChangeGuid;\r | |
18 | \r | |
19 | //\r | |
20 | // Global variables\r | |
21 | //\r | |
22 | SPI_INSTANCE *mSpiInstance;\r | |
23 | CONST UINT32 mSpiRegister[] = {\r | |
24 | R_QNC_RCRB_SPIS,\r | |
25 | R_QNC_RCRB_SPIPREOP,\r | |
26 | R_QNC_RCRB_SPIOPMENU,\r | |
27 | R_QNC_RCRB_SPIOPMENU + 4\r | |
28 | };\r | |
29 | \r | |
30 | //\r | |
31 | // Function implementations\r | |
32 | //\r | |
33 | VOID\r | |
34 | PchSpiVirtualddressChangeEvent (\r | |
35 | IN EFI_EVENT Event,\r | |
36 | IN VOID *Context\r | |
37 | )\r | |
38 | /*++\r | |
39 | \r | |
40 | Routine Description:\r | |
41 | \r | |
42 | Fixup internal data pointers so that the services can be called in virtual mode.\r | |
43 | \r | |
44 | Arguments:\r | |
45 | \r | |
46 | Event The event registered.\r | |
47 | Context Event context. Not used in this event handler.\r | |
48 | \r | |
49 | Returns:\r | |
50 | \r | |
51 | None.\r | |
52 | \r | |
53 | --*/\r | |
54 | {\r | |
55 | gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &(mSpiInstance->PchRootComplexBar));\r | |
56 | gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &(mSpiInstance->SpiProtocol.Init));\r | |
57 | gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &(mSpiInstance->SpiProtocol.Lock));\r | |
58 | gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &(mSpiInstance->SpiProtocol.Execute));\r | |
59 | gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID *) &(mSpiInstance));\r | |
60 | }\r | |
61 | \r | |
62 | EFI_STATUS\r | |
63 | EFIAPI\r | |
64 | InstallPchSpi (\r | |
65 | IN EFI_HANDLE ImageHandle,\r | |
66 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
67 | )\r | |
68 | /*++\r | |
69 | \r | |
70 | Routine Description:\r | |
71 | \r | |
72 | Entry point for the SPI host controller driver.\r | |
73 | \r | |
74 | Arguments:\r | |
75 | \r | |
76 | ImageHandle Image handle of this driver.\r | |
77 | SystemTable Global system service table.\r | |
78 | \r | |
79 | Returns:\r | |
80 | \r | |
81 | EFI_SUCCESS Initialization complete.\r | |
82 | EFI_UNSUPPORTED The chipset is unsupported by this driver.\r | |
83 | EFI_OUT_OF_RESOURCES Do not have enough resources to initialize the driver.\r | |
84 | EFI_DEVICE_ERROR Device error, driver exits abnormally.\r | |
85 | \r | |
86 | --*/\r | |
87 | {\r | |
88 | EFI_STATUS Status;\r | |
89 | UINT64 BaseAddress;\r | |
90 | UINT64 Length;\r | |
91 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdMemorySpaceDescriptor;\r | |
92 | UINT64 Attributes;\r | |
93 | EFI_EVENT Event;\r | |
94 | \r | |
95 | DEBUG ((DEBUG_INFO, "InstallPchSpi() Start\n"));\r | |
96 | \r | |
97 | //\r | |
98 | // Allocate Runtime memory for the SPI protocol instance.\r | |
99 | //\r | |
100 | mSpiInstance = AllocateRuntimeZeroPool (sizeof (SPI_INSTANCE));\r | |
101 | if (mSpiInstance == NULL) {\r | |
102 | return EFI_OUT_OF_RESOURCES;\r | |
103 | }\r | |
104 | //\r | |
105 | // Initialize the SPI protocol instance\r | |
106 | //\r | |
107 | Status = SpiProtocolConstructor (mSpiInstance);\r | |
108 | if (EFI_ERROR (Status)) {\r | |
109 | return Status;\r | |
110 | }\r | |
111 | //\r | |
112 | // Install the EFI_SPI_PROTOCOL interface\r | |
113 | //\r | |
114 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
115 | &(mSpiInstance->Handle),\r | |
116 | &gEfiSpiProtocolGuid,\r | |
117 | &(mSpiInstance->SpiProtocol),\r | |
118 | NULL\r | |
119 | );\r | |
120 | if (EFI_ERROR (Status)) {\r | |
121 | FreePool (mSpiInstance);\r | |
122 | return EFI_DEVICE_ERROR;\r | |
123 | }\r | |
124 | //\r | |
125 | // Set RCBA space in GCD to be RUNTIME so that the range will be supported in\r | |
126 | // virtual address mode in EFI aware OS runtime.\r | |
127 | // It will assert if RCBA Memory Space is not allocated\r | |
128 | // The caller is responsible for the existence and allocation of the RCBA Memory Spaces\r | |
129 | //\r | |
130 | BaseAddress = (EFI_PHYSICAL_ADDRESS) (mSpiInstance->PchRootComplexBar);\r | |
131 | Length = PcdGet64 (PcdRcbaMmioSize);\r | |
132 | \r | |
133 | Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &GcdMemorySpaceDescriptor);\r | |
134 | ASSERT_EFI_ERROR (Status);\r | |
135 | \r | |
136 | Attributes = GcdMemorySpaceDescriptor.Attributes | EFI_MEMORY_RUNTIME;\r | |
137 | \r | |
138 | Status = gDS->AddMemorySpace (\r | |
139 | EfiGcdMemoryTypeMemoryMappedIo,\r | |
140 | BaseAddress,\r | |
141 | Length,\r | |
142 | EFI_MEMORY_RUNTIME | EFI_MEMORY_UC\r | |
143 | );\r | |
144 | ASSERT_EFI_ERROR(Status);\r | |
145 | \r | |
146 | Status = gDS->SetMemorySpaceAttributes (\r | |
147 | BaseAddress,\r | |
148 | Length,\r | |
149 | Attributes\r | |
150 | );\r | |
151 | ASSERT_EFI_ERROR (Status);\r | |
152 | \r | |
153 | Status = gBS->CreateEventEx (\r | |
154 | EVT_NOTIFY_SIGNAL,\r | |
155 | TPL_NOTIFY,\r | |
156 | PchSpiVirtualddressChangeEvent,\r | |
157 | NULL,\r | |
158 | &gEfiEventVirtualAddressChangeGuid,\r | |
159 | &Event\r | |
160 | );\r | |
161 | ASSERT_EFI_ERROR (Status);\r | |
162 | \r | |
163 | DEBUG ((DEBUG_INFO, "InstallPchSpi() End\n"));\r | |
164 | \r | |
165 | return EFI_SUCCESS;\r | |
166 | }\r | |
167 | \r | |
168 | VOID\r | |
169 | EFIAPI\r | |
170 | SpiPhaseInit (\r | |
171 | VOID\r | |
172 | )\r | |
173 | /*++\r | |
174 | Routine Description:\r | |
175 | \r | |
176 | This function is a a hook for Spi Dxe phase specific initialization\r | |
177 | \r | |
178 | Arguments:\r | |
179 | \r | |
180 | None\r | |
181 | \r | |
182 | Returns:\r | |
183 | \r | |
184 | None\r | |
185 | \r | |
186 | --*/\r | |
187 | {\r | |
188 | UINTN Index;\r | |
189 | \r | |
190 | //\r | |
191 | // Disable SMM BIOS write protect if it's not a SMM protocol\r | |
192 | //\r | |
193 | MmioAnd8 (\r | |
194 | PciDeviceMmBase (PCI_BUS_NUMBER_QNC,\r | |
195 | PCI_DEVICE_NUMBER_QNC_LPC,\r | |
196 | PCI_FUNCTION_NUMBER_QNC_LPC) + R_QNC_LPC_BIOS_CNTL,\r | |
197 | (UINT8) (~B_QNC_LPC_BIOS_CNTL_SMM_BWP)\r | |
198 | );\r | |
199 | \r | |
200 | //\r | |
201 | // Save SPI Registers for S3 resume usage\r | |
202 | //\r | |
203 | for (Index = 0; Index < sizeof (mSpiRegister) / sizeof (UINT32); Index++) {\r | |
204 | S3BootScriptSaveMemWrite (\r | |
205 | S3BootScriptWidthUint32,\r | |
206 | (UINTN) (mSpiInstance->PchRootComplexBar + mSpiRegister[Index]),\r | |
207 | 1,\r | |
208 | (VOID *) (UINTN) (mSpiInstance->PchRootComplexBar + mSpiRegister[Index])\r | |
209 | );\r | |
210 | }\r | |
211 | }\r |