| e643315b |
1 | /** @file\r |
| 2 | Produces the CPU I/O PPI.\r |
| 3 | \r |
| 4 | Copyright (c) 2009 - 2010, Intel Corporation\r |
| 5 | All rights reserved. This program and the accompanying materials \r |
| 6 | are licensed and made available under the terms and conditions of the BSD License \r |
| 7 | which accompanies this distribution. The full text of the license may be found at \r |
| 8 | http://opensource.org/licenses/bsd-license.php \r |
| 9 | \r |
| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r |
| 12 | \r |
| 13 | **/\r |
| 14 | \r |
| 15 | #include <PiDxe.h>\r |
| 16 | \r |
| 17 | #include <Ppi/CpuIo.h>\r |
| 18 | \r |
| 19 | #include <Library/BaseLib.h>\r |
| 20 | #include <Library/DebugLib.h>\r |
| 21 | #include <Library/IoLib.h>\r |
| 22 | #include <Library/PeiServicesLib.h>\r |
| 23 | \r |
| 24 | #define MAX_IO_PORT_ADDRESS 0xFFFF\r |
| 25 | \r |
| 26 | //\r |
| 27 | // Function Prototypes\r |
| 28 | //\r |
| 29 | EFI_STATUS\r |
| 30 | EFIAPI\r |
| 31 | CpuMemoryServiceRead (\r |
| 32 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 33 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 34 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 35 | IN UINT64 Address,\r |
| 36 | IN UINTN Count,\r |
| 37 | OUT VOID *Buffer\r |
| 38 | );\r |
| 39 | \r |
| 40 | EFI_STATUS\r |
| 41 | EFIAPI\r |
| 42 | CpuMemoryServiceWrite (\r |
| 43 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 44 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 45 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 46 | IN UINT64 Address,\r |
| 47 | IN UINTN Count,\r |
| 48 | IN VOID *Buffer\r |
| 49 | );\r |
| 50 | \r |
| 51 | EFI_STATUS\r |
| 52 | EFIAPI\r |
| 53 | CpuIoServiceRead (\r |
| 54 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 55 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 56 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 57 | IN UINT64 Address,\r |
| 58 | IN UINTN Count,\r |
| 59 | OUT VOID *Buffer\r |
| 60 | );\r |
| 61 | \r |
| 62 | EFI_STATUS\r |
| 63 | EFIAPI\r |
| 64 | CpuIoServiceWrite (\r |
| 65 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 66 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 67 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 68 | IN UINT64 Address,\r |
| 69 | IN UINTN Count,\r |
| 70 | IN VOID *Buffer\r |
| 71 | );\r |
| 72 | \r |
| 73 | UINT8\r |
| 74 | EFIAPI\r |
| 75 | CpuIoRead8 (\r |
| 76 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 77 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 78 | IN UINT64 Address\r |
| 79 | );\r |
| 80 | \r |
| 81 | UINT16\r |
| 82 | EFIAPI\r |
| 83 | CpuIoRead16 (\r |
| 84 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 85 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 86 | IN UINT64 Address\r |
| 87 | );\r |
| 88 | \r |
| 89 | UINT32\r |
| 90 | EFIAPI\r |
| 91 | CpuIoRead32 (\r |
| 92 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 93 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 94 | IN UINT64 Address\r |
| 95 | );\r |
| 96 | \r |
| 97 | UINT64\r |
| 98 | EFIAPI\r |
| 99 | CpuIoRead64 (\r |
| 100 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 101 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 102 | IN UINT64 Address\r |
| 103 | );\r |
| 104 | \r |
| 105 | VOID\r |
| 106 | EFIAPI\r |
| 107 | CpuIoWrite8 (\r |
| 108 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 109 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 110 | IN UINT64 Address,\r |
| 111 | IN UINT8 Data\r |
| 112 | );\r |
| 113 | \r |
| 114 | VOID\r |
| 115 | EFIAPI\r |
| 116 | CpuIoWrite16 (\r |
| 117 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 118 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 119 | IN UINT64 Address,\r |
| 120 | IN UINT16 Data\r |
| 121 | );\r |
| 122 | \r |
| 123 | VOID\r |
| 124 | EFIAPI\r |
| 125 | CpuIoWrite32 (\r |
| 126 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 127 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 128 | IN UINT64 Address,\r |
| 129 | IN UINT32 Data\r |
| 130 | );\r |
| 131 | \r |
| 132 | VOID\r |
| 133 | EFIAPI\r |
| 134 | CpuIoWrite64 (\r |
| 135 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 136 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 137 | IN UINT64 Address,\r |
| 138 | IN UINT64 Data\r |
| 139 | );\r |
| 140 | \r |
| 141 | UINT8\r |
| 142 | EFIAPI\r |
| 143 | CpuMemRead8 (\r |
| 144 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 145 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 146 | IN UINT64 Address\r |
| 147 | );\r |
| 148 | \r |
| 149 | UINT16\r |
| 150 | EFIAPI\r |
| 151 | CpuMemRead16 (\r |
| 152 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 153 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 154 | IN UINT64 Address\r |
| 155 | );\r |
| 156 | \r |
| 157 | UINT32\r |
| 158 | EFIAPI\r |
| 159 | CpuMemRead32 (\r |
| 160 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 161 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 162 | IN UINT64 Address\r |
| 163 | );\r |
| 164 | \r |
| 165 | UINT64\r |
| 166 | EFIAPI\r |
| 167 | CpuMemRead64 (\r |
| 168 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 169 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 170 | IN UINT64 Address\r |
| 171 | );\r |
| 172 | \r |
| 173 | VOID\r |
| 174 | EFIAPI\r |
| 175 | CpuMemWrite8 (\r |
| 176 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 177 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 178 | IN UINT64 Address,\r |
| 179 | IN UINT8 Data\r |
| 180 | );\r |
| 181 | \r |
| 182 | VOID\r |
| 183 | EFIAPI\r |
| 184 | CpuMemWrite16 (\r |
| 185 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 186 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 187 | IN UINT64 Address,\r |
| 188 | IN UINT16 Data\r |
| 189 | );\r |
| 190 | \r |
| 191 | VOID\r |
| 192 | EFIAPI\r |
| 193 | CpuMemWrite32 (\r |
| 194 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 195 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 196 | IN UINT64 Address,\r |
| 197 | IN UINT32 Data\r |
| 198 | );\r |
| 199 | \r |
| 200 | VOID\r |
| 201 | EFIAPI\r |
| 202 | CpuMemWrite64 (\r |
| 203 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 204 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 205 | IN UINT64 Address,\r |
| 206 | IN UINT64 Data\r |
| 207 | );\r |
| 208 | \r |
| 209 | //\r |
| 210 | // Instance of CPU I/O PPI\r |
| 211 | //\r |
| 212 | EFI_PEI_CPU_IO_PPI gCpuIoPpi = {\r |
| 213 | {\r |
| 214 | CpuMemoryServiceRead,\r |
| 215 | CpuMemoryServiceWrite\r |
| 216 | },\r |
| 217 | {\r |
| 218 | CpuIoServiceRead,\r |
| 219 | CpuIoServiceWrite\r |
| 220 | },\r |
| 221 | CpuIoRead8,\r |
| 222 | CpuIoRead16,\r |
| 223 | CpuIoRead32,\r |
| 224 | CpuIoRead64,\r |
| 225 | CpuIoWrite8,\r |
| 226 | CpuIoWrite16,\r |
| 227 | CpuIoWrite32,\r |
| 228 | CpuIoWrite64,\r |
| 229 | CpuMemRead8,\r |
| 230 | CpuMemRead16,\r |
| 231 | CpuMemRead32,\r |
| 232 | CpuMemRead64,\r |
| 233 | CpuMemWrite8,\r |
| 234 | CpuMemWrite16,\r |
| 235 | CpuMemWrite32,\r |
| 236 | CpuMemWrite64\r |
| 237 | };\r |
| 238 | \r |
| 239 | //\r |
| 240 | // PPI Descriptor used to install the CPU I/O PPI\r |
| 241 | //\r |
| 242 | EFI_PEI_PPI_DESCRIPTOR gPpiList = {\r |
| 243 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r |
| 244 | &gEfiPeiCpuIoPpiInstalledGuid,\r |
| 245 | NULL\r |
| 246 | };\r |
| 247 | \r |
| 248 | //\r |
| 249 | // Lookup table for increment values based on transfer widths\r |
| 250 | //\r |
| 251 | UINT8 mInStride[] = {\r |
| 252 | 1, // EfiPeiCpuIoWidthUint8\r |
| 253 | 2, // EfiPeiCpuIoWidthUint16\r |
| 254 | 4, // EfiPeiCpuIoWidthUint32\r |
| 255 | 8, // EfiPeiCpuIoWidthUint64\r |
| 256 | 0, // EfiPeiCpuIoWidthFifoUint8\r |
| 257 | 0, // EfiPeiCpuIoWidthFifoUint16\r |
| 258 | 0, // EfiPeiCpuIoWidthFifoUint32\r |
| 259 | 0, // EfiPeiCpuIoWidthFifoUint64\r |
| 260 | 1, // EfiPeiCpuIoWidthFillUint8\r |
| 261 | 2, // EfiPeiCpuIoWidthFillUint16\r |
| 262 | 4, // EfiPeiCpuIoWidthFillUint32\r |
| 263 | 8 // EfiPeiCpuIoWidthFillUint64\r |
| 264 | };\r |
| 265 | \r |
| 266 | //\r |
| 267 | // Lookup table for increment values based on transfer widths\r |
| 268 | //\r |
| 269 | UINT8 mOutStride[] = {\r |
| 270 | 1, // EfiPeiCpuIoWidthUint8\r |
| 271 | 2, // EfiPeiCpuIoWidthUint16\r |
| 272 | 4, // EfiPeiCpuIoWidthUint32\r |
| 273 | 8, // EfiPeiCpuIoWidthUint64\r |
| 274 | 1, // EfiPeiCpuIoWidthFifoUint8\r |
| 275 | 2, // EfiPeiCpuIoWidthFifoUint16\r |
| 276 | 4, // EfiPeiCpuIoWidthFifoUint32\r |
| 277 | 8, // EfiPeiCpuIoWidthFifoUint64\r |
| 278 | 0, // EfiPeiCpuIoWidthFillUint8\r |
| 279 | 0, // EfiPeiCpuIoWidthFillUint16\r |
| 280 | 0, // EfiPeiCpuIoWidthFillUint32\r |
| 281 | 0 // EfiPeiCpuIoWidthFillUint64\r |
| 282 | };\r |
| 283 | \r |
| 284 | /**\r |
| 285 | Check parameters to a CPU I/O PPI service request.\r |
| 286 | \r |
| 287 | @param[in] MmioOperation TRUE for an MMIO operation, FALSE for I/O Port operation.\r |
| 288 | @param[in] Width The width of the access. Enumerated in bytes.\r |
| 289 | @param[in] Address The physical address of the access.\r |
| 290 | @param[in] Count The number of accesses to perform.\r |
| 291 | @param[in] Buffer A pointer to the buffer of data.\r |
| 292 | \r |
| 293 | @retval EFI_SUCCESS The parameters for this request pass the checks.\r |
| 294 | @retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.\r |
| 295 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
| 296 | @retval EFI_UNSUPPORTED The address range specified by Address, Width, \r |
| 297 | and Count is not valid for this EFI system.\r |
| 298 | \r |
| 299 | **/\r |
| 300 | EFI_STATUS\r |
| 301 | CpuIoCheckParameter (\r |
| 302 | IN BOOLEAN MmioOperation,\r |
| 303 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 304 | IN UINT64 Address,\r |
| 305 | IN UINTN Count,\r |
| 306 | IN VOID *Buffer\r |
| 307 | )\r |
| 308 | {\r |
| 309 | UINT64 MaxCount;\r |
| 310 | UINT64 Limit;\r |
| 311 | \r |
| 312 | //\r |
| 313 | // Check to see if Buffer is NULL\r |
| 314 | //\r |
| 315 | if (Buffer == NULL) {\r |
| 316 | return EFI_INVALID_PARAMETER;\r |
| 317 | }\r |
| 318 | \r |
| 319 | //\r |
| 320 | // Check to see if Width is in the valid range\r |
| 321 | //\r |
| 322 | if (Width < 0 || Width >= EfiPeiCpuIoWidthMaximum) {\r |
| 323 | return EFI_INVALID_PARAMETER;\r |
| 324 | }\r |
| 325 | \r |
| 326 | //\r |
| 327 | // For FIFO type, the target address won't increase during the access,\r |
| 328 | // so treat Count as 1\r |
| 329 | //\r |
| 330 | if (Width >= EfiPeiCpuIoWidthFifoUint8 && Width <= EfiPeiCpuIoWidthFifoUint64) {\r |
| 331 | Count = 1;\r |
| 332 | }\r |
| 333 | \r |
| 334 | //\r |
| 335 | // Check to see if Width is in the valid range for I/O Port operations\r |
| 336 | //\r |
| 337 | Width = Width & 0x03;\r |
| 338 | if (!MmioOperation && (Width == EfiPeiCpuIoWidthUint64)) {\r |
| 339 | return EFI_INVALID_PARAMETER;\r |
| 340 | }\r |
| 341 | \r |
| 342 | //\r |
| 343 | // Check to see if any address associated with this transfer exceeds the maximum \r |
| 344 | // allowed address. The maximum address implied by the parameters passed in is\r |
| 345 | // Address + Size * Count. If the following condition is met, then the transfer\r |
| 346 | // is not supported.\r |
| 347 | //\r |
| 348 | // Address + Size * Count > (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS) + 1\r |
| 349 | //\r |
| 350 | // Since MAX_ADDRESS can be the maximum integer value supported by the CPU and Count \r |
| 351 | // can also be the maximum integer value supported by the CPU, this range\r |
| 352 | // check must be adjusted to avoid all oveflow conditions.\r |
| 353 | // \r |
| 354 | // The follwing form of the range check is equivalent but assumes that \r |
| 355 | // MAX_ADDRESS and MAX_IO_PORT_ADDRESS are of the form (2^n - 1).\r |
| 356 | //\r |
| 357 | Limit = (MmioOperation ? MAX_ADDRESS : MAX_IO_PORT_ADDRESS);\r |
| 358 | if (Count == 0) {\r |
| 359 | if (Address > Limit) {\r |
| 360 | return EFI_UNSUPPORTED;\r |
| 361 | }\r |
| 362 | } else { \r |
| 363 | MaxCount = RShiftU64 (Limit, Width);\r |
| 364 | if (MaxCount < (Count - 1)) {\r |
| 365 | return EFI_UNSUPPORTED;\r |
| 366 | }\r |
| 367 | if (Address > LShiftU64 (MaxCount - Count + 1, Width)) {\r |
| 368 | return EFI_UNSUPPORTED;\r |
| 369 | }\r |
| 370 | }\r |
| 371 | \r |
| 372 | return EFI_SUCCESS;\r |
| 373 | }\r |
| 374 | \r |
| 375 | /**\r |
| 376 | Reads memory-mapped registers.\r |
| 377 | \r |
| 378 | @param[in] PeiServices An indirect pointer to the PEI Services Table\r |
| 379 | published by the PEI Foundation.\r |
| 380 | @param[in] This Pointer to local data for the interface.\r |
| 381 | @param[in] Width The width of the access. Enumerated in bytes.\r |
| 382 | @param[in] Address The physical address of the access.\r |
| 383 | @param[in] Count The number of accesses to perform.\r |
| 384 | @param[out] Buffer A pointer to the buffer of data.\r |
| 385 | \r |
| 386 | @retval EFI_SUCCESS The function completed successfully.\r |
| 387 | @retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.\r |
| 388 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
| 389 | @retval EFI_UNSUPPORTED The address range specified by Address, Width, \r |
| 390 | and Count is not valid for this EFI system.\r |
| 391 | \r |
| 392 | **/\r |
| 393 | EFI_STATUS\r |
| 394 | EFIAPI\r |
| 395 | CpuMemoryServiceRead (\r |
| 396 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 397 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 398 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 399 | IN UINT64 Address,\r |
| 400 | IN UINTN Count,\r |
| 401 | OUT VOID *Buffer\r |
| 402 | )\r |
| 403 | {\r |
| 404 | EFI_STATUS Status;\r |
| 405 | UINT8 InStride;\r |
| 406 | UINT8 OutStride;\r |
| 407 | EFI_PEI_CPU_IO_PPI_WIDTH OperationWidth;\r |
| 408 | BOOLEAN Aligned;\r |
| 409 | UINT8 *Uint8Buffer;\r |
| 410 | \r |
| 411 | Status = CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer);\r |
| 412 | if (EFI_ERROR (Status)) {\r |
| 413 | return Status;\r |
| 414 | }\r |
| 415 | \r |
| 416 | //\r |
| 417 | // Select loop based on the width of the transfer\r |
| 418 | //\r |
| 419 | InStride = mInStride[Width];\r |
| 420 | OutStride = mOutStride[Width];\r |
| 421 | OperationWidth = Width & 0x03;\r |
| 422 | Aligned = (BOOLEAN)(((UINTN)Buffer & (mInStride[OperationWidth] - 1)) == 0x00);\r |
| 423 | for (Uint8Buffer = Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {\r |
| 424 | if (OperationWidth == EfiPeiCpuIoWidthUint8) {\r |
| 425 | *Uint8Buffer = MmioRead8 ((UINTN)Address);\r |
| 426 | } else if (OperationWidth == EfiPeiCpuIoWidthUint16) {\r |
| 427 | if (Aligned) {\r |
| 428 | *((UINT16 *)Uint8Buffer) = MmioRead16 ((UINTN)Address);\r |
| 429 | } else {\r |
| 430 | WriteUnaligned16 ((UINT16 *)Uint8Buffer, MmioRead16 ((UINTN)Address));\r |
| 431 | }\r |
| 432 | } else if (OperationWidth == EfiPeiCpuIoWidthUint32) {\r |
| 433 | if (Aligned) {\r |
| 434 | *((UINT32 *)Uint8Buffer) = MmioRead32 ((UINTN)Address);\r |
| 435 | } else {\r |
| 436 | WriteUnaligned32 ((UINT32 *)Uint8Buffer, MmioRead32 ((UINTN)Address));\r |
| 437 | }\r |
| 438 | } else if (OperationWidth == EfiPeiCpuIoWidthUint64) {\r |
| 439 | if (Aligned) {\r |
| 440 | *((UINT64 *)Uint8Buffer) = MmioRead64 ((UINTN)Address);\r |
| 441 | } else {\r |
| 442 | WriteUnaligned64 ((UINT64 *)Uint8Buffer, MmioRead64 ((UINTN)Address));\r |
| 443 | }\r |
| 444 | }\r |
| 445 | }\r |
| 446 | return EFI_SUCCESS;\r |
| 447 | }\r |
| 448 | \r |
| 449 | /**\r |
| 450 | Writes memory-mapped registers.\r |
| 451 | \r |
| 452 | @param[in] PeiServices An indirect pointer to the PEI Services Table\r |
| 453 | published by the PEI Foundation.\r |
| 454 | @param[in] This Pointer to local data for the interface.\r |
| 455 | @param[in] Width The width of the access. Enumerated in bytes.\r |
| 456 | @param[in] Address The physical address of the access.\r |
| 457 | @param[in] Count The number of accesses to perform.\r |
| 458 | @param[in] Buffer A pointer to the buffer of data.\r |
| 459 | \r |
| 460 | @retval EFI_SUCCESS The function completed successfully.\r |
| 461 | @retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.\r |
| 462 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
| 463 | @retval EFI_UNSUPPORTED The address range specified by Address, Width, \r |
| 464 | and Count is not valid for this EFI system.\r |
| 465 | \r |
| 466 | **/\r |
| 467 | EFI_STATUS\r |
| 468 | EFIAPI\r |
| 469 | CpuMemoryServiceWrite (\r |
| 470 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 471 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 472 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 473 | IN UINT64 Address,\r |
| 474 | IN UINTN Count,\r |
| 475 | IN VOID *Buffer\r |
| 476 | )\r |
| 477 | {\r |
| 478 | EFI_STATUS Status;\r |
| 479 | UINT8 InStride;\r |
| 480 | UINT8 OutStride;\r |
| 481 | EFI_PEI_CPU_IO_PPI_WIDTH OperationWidth;\r |
| 482 | BOOLEAN Aligned;\r |
| 483 | UINT8 *Uint8Buffer;\r |
| 484 | \r |
| 485 | Status = CpuIoCheckParameter (TRUE, Width, Address, Count, Buffer);\r |
| 486 | if (EFI_ERROR (Status)) {\r |
| 487 | return Status;\r |
| 488 | }\r |
| 489 | \r |
| 490 | //\r |
| 491 | // Select loop based on the width of the transfer\r |
| 492 | //\r |
| 493 | InStride = mInStride[Width];\r |
| 494 | OutStride = mOutStride[Width];\r |
| 495 | OperationWidth = Width & 0x03;\r |
| 496 | Aligned = (BOOLEAN)(((UINTN)Buffer & (mInStride[OperationWidth] - 1)) == 0x00);\r |
| 497 | for (Uint8Buffer = Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {\r |
| 498 | if (OperationWidth == EfiPeiCpuIoWidthUint8) {\r |
| 499 | MmioWrite8 ((UINTN)Address, *Uint8Buffer);\r |
| 500 | } else if (OperationWidth == EfiPeiCpuIoWidthUint16) {\r |
| 501 | if (Aligned) {\r |
| 502 | MmioWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));\r |
| 503 | } else {\r |
| 504 | MmioWrite16 ((UINTN)Address, ReadUnaligned16 ((UINT16 *)Uint8Buffer));\r |
| 505 | }\r |
| 506 | } else if (OperationWidth == EfiPeiCpuIoWidthUint32) {\r |
| 507 | if (Aligned) {\r |
| 508 | MmioWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));\r |
| 509 | } else {\r |
| 510 | MmioWrite32 ((UINTN)Address, ReadUnaligned32 ((UINT32 *)Uint8Buffer));\r |
| 511 | }\r |
| 512 | } else if (OperationWidth == EfiPeiCpuIoWidthUint64) {\r |
| 513 | if (Aligned) {\r |
| 514 | MmioWrite64 ((UINTN)Address, *((UINT64 *)Uint8Buffer));\r |
| 515 | } else {\r |
| 516 | MmioWrite64 ((UINTN)Address, ReadUnaligned64 ((UINT64 *)Uint8Buffer));\r |
| 517 | }\r |
| 518 | }\r |
| 519 | }\r |
| 520 | return EFI_SUCCESS;\r |
| 521 | }\r |
| 522 | \r |
| 523 | /**\r |
| 524 | Reads I/O registers.\r |
| 525 | \r |
| 526 | @param[in] PeiServices An indirect pointer to the PEI Services Table\r |
| 527 | published by the PEI Foundation.\r |
| 528 | @param[in] This Pointer to local data for the interface.\r |
| 529 | @param[in] Width The width of the access. Enumerated in bytes.\r |
| 530 | @param[in] Address The physical address of the access.\r |
| 531 | @param[in] Count The number of accesses to perform.\r |
| 532 | @param[out] Buffer A pointer to the buffer of data.\r |
| 533 | \r |
| 534 | @retval EFI_SUCCESS The function completed successfully.\r |
| 535 | @retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.\r |
| 536 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
| 537 | @retval EFI_UNSUPPORTED The address range specified by Address, Width, \r |
| 538 | and Count is not valid for this EFI system.\r |
| 539 | \r |
| 540 | **/\r |
| 541 | EFI_STATUS\r |
| 542 | EFIAPI\r |
| 543 | CpuIoServiceRead (\r |
| 544 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 545 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 546 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 547 | IN UINT64 Address,\r |
| 548 | IN UINTN Count,\r |
| 549 | OUT VOID *Buffer\r |
| 550 | )\r |
| 551 | {\r |
| 552 | EFI_STATUS Status;\r |
| 553 | UINT8 InStride;\r |
| 554 | UINT8 OutStride;\r |
| 555 | EFI_PEI_CPU_IO_PPI_WIDTH OperationWidth;\r |
| 556 | BOOLEAN Aligned;\r |
| 557 | UINT8 *Uint8Buffer;\r |
| 558 | \r |
| 559 | Status = CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer);\r |
| 560 | if (EFI_ERROR (Status)) {\r |
| 561 | return Status;\r |
| 562 | }\r |
| 563 | \r |
| 564 | //\r |
| 565 | // Select loop based on the width of the transfer\r |
| 566 | //\r |
| 567 | InStride = mInStride[Width];\r |
| 568 | OutStride = mOutStride[Width];\r |
| 569 | OperationWidth = Width & 0x03;\r |
| 570 | Aligned = (BOOLEAN)(((UINTN)Buffer & (mInStride[OperationWidth] - 1)) == 0x00);\r |
| 571 | for (Uint8Buffer = Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {\r |
| 572 | if (OperationWidth == EfiPeiCpuIoWidthUint8) {\r |
| 573 | *Uint8Buffer = IoRead8 ((UINTN)Address);\r |
| 574 | } else if (OperationWidth == EfiPeiCpuIoWidthUint16) {\r |
| 575 | if (Aligned) {\r |
| 576 | *((UINT16 *)Uint8Buffer) = IoRead16 ((UINTN)Address);\r |
| 577 | } else {\r |
| 578 | WriteUnaligned16 ((UINT16 *)Uint8Buffer, IoRead16 ((UINTN)Address));\r |
| 579 | }\r |
| 580 | } else if (OperationWidth == EfiPeiCpuIoWidthUint32) {\r |
| 581 | if (Aligned) {\r |
| 582 | *((UINT32 *)Uint8Buffer) = IoRead32 ((UINTN)Address);\r |
| 583 | } else {\r |
| 584 | WriteUnaligned32 ((UINT32 *)Uint8Buffer, IoRead32 ((UINTN)Address));\r |
| 585 | }\r |
| 586 | }\r |
| 587 | }\r |
| 588 | \r |
| 589 | return EFI_SUCCESS;\r |
| 590 | }\r |
| 591 | \r |
| 592 | /**\r |
| 593 | Write I/O registers.\r |
| 594 | \r |
| 595 | @param[in] PeiServices An indirect pointer to the PEI Services Table\r |
| 596 | published by the PEI Foundation.\r |
| 597 | @param[in] This Pointer to local data for the interface.\r |
| 598 | @param[in] Width The width of the access. Enumerated in bytes.\r |
| 599 | @param[in] Address The physical address of the access.\r |
| 600 | @param[in] Count The number of accesses to perform.\r |
| 601 | @param[in] Buffer A pointer to the buffer of data.\r |
| 602 | \r |
| 603 | @retval EFI_SUCCESS The function completed successfully.\r |
| 604 | @retval EFI_INVALID_PARAMETER Width is invalid for this EFI system.\r |
| 605 | @retval EFI_INVALID_PARAMETER Buffer is NULL.\r |
| 606 | @retval EFI_UNSUPPORTED The address range specified by Address, Width, \r |
| 607 | and Count is not valid for this EFI system.\r |
| 608 | \r |
| 609 | **/\r |
| 610 | EFI_STATUS\r |
| 611 | EFIAPI\r |
| 612 | CpuIoServiceWrite (\r |
| 613 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 614 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 615 | IN EFI_PEI_CPU_IO_PPI_WIDTH Width,\r |
| 616 | IN UINT64 Address,\r |
| 617 | IN UINTN Count,\r |
| 618 | IN VOID *Buffer\r |
| 619 | )\r |
| 620 | {\r |
| 621 | EFI_STATUS Status;\r |
| 622 | UINT8 InStride;\r |
| 623 | UINT8 OutStride;\r |
| 624 | EFI_PEI_CPU_IO_PPI_WIDTH OperationWidth;\r |
| 625 | BOOLEAN Aligned;\r |
| 626 | UINT8 *Uint8Buffer;\r |
| 627 | \r |
| 628 | //\r |
| 629 | // Make sure the parameters are valid\r |
| 630 | //\r |
| 631 | Status = CpuIoCheckParameter (FALSE, Width, Address, Count, Buffer);\r |
| 632 | if (EFI_ERROR (Status)) {\r |
| 633 | return Status;\r |
| 634 | }\r |
| 635 | \r |
| 636 | //\r |
| 637 | // Select loop based on the width of the transfer\r |
| 638 | //\r |
| 639 | InStride = mInStride[Width];\r |
| 640 | OutStride = mOutStride[Width];\r |
| 641 | OperationWidth = Width & 0x03;\r |
| 642 | Aligned = (BOOLEAN)(((UINTN)Buffer & (mInStride[OperationWidth] - 1)) == 0x00);\r |
| 643 | for (Uint8Buffer = (UINT8 *)Buffer; Count > 0; Address += InStride, Uint8Buffer += OutStride, Count--) {\r |
| 644 | if (OperationWidth == EfiPeiCpuIoWidthUint8) {\r |
| 645 | IoWrite8 ((UINTN)Address, *Uint8Buffer);\r |
| 646 | } else if (OperationWidth == EfiPeiCpuIoWidthUint16) {\r |
| 647 | if (Aligned) {\r |
| 648 | IoWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));\r |
| 649 | } else {\r |
| 650 | IoWrite16 ((UINTN)Address, ReadUnaligned16 ((UINT16 *)Uint8Buffer));\r |
| 651 | }\r |
| 652 | } else if (OperationWidth == EfiPeiCpuIoWidthUint32) {\r |
| 653 | if (Aligned) {\r |
| 654 | IoWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));\r |
| 655 | } else {\r |
| 656 | IoWrite32 ((UINTN)Address, ReadUnaligned32 ((UINT32 *)Uint8Buffer));\r |
| 657 | }\r |
| 658 | }\r |
| 659 | }\r |
| 660 | \r |
| 661 | return EFI_SUCCESS;\r |
| 662 | }\r |
| 663 | \r |
| 664 | /**\r |
| 665 | 8-bit I/O read operations.\r |
| 666 | \r |
| 667 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 668 | by the PEI Foundation.\r |
| 669 | @param[in] This Pointer to local data for the interface.\r |
| 670 | @param[in] Address The physical address of the access.\r |
| 671 | \r |
| 672 | @return An 8-bit value returned from the I/O space.\r |
| 673 | **/\r |
| 674 | UINT8\r |
| 675 | EFIAPI\r |
| 676 | CpuIoRead8 (\r |
| 677 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 678 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 679 | IN UINT64 Address\r |
| 680 | )\r |
| 681 | {\r |
| 682 | return IoRead8 ((UINTN)Address);\r |
| 683 | }\r |
| 684 | \r |
| 685 | /**\r |
| 686 | 16-bit I/O read operations.\r |
| 687 | \r |
| 688 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 689 | by the PEI Foundation.\r |
| 690 | @param[in] This Pointer to local data for the interface.\r |
| 691 | @param[in] Address The physical address of the access.\r |
| 692 | \r |
| 693 | @return A 16-bit value returned from the I/O space.\r |
| 694 | \r |
| 695 | **/\r |
| 696 | UINT16\r |
| 697 | EFIAPI\r |
| 698 | CpuIoRead16 (\r |
| 699 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 700 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 701 | IN UINT64 Address\r |
| 702 | )\r |
| 703 | {\r |
| 704 | return IoRead16 ((UINTN)Address);\r |
| 705 | }\r |
| 706 | \r |
| 707 | /**\r |
| 708 | 32-bit I/O read operations.\r |
| 709 | \r |
| 710 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 711 | by the PEI Foundation.\r |
| 712 | @param[in] This Pointer to local data for the interface.\r |
| 713 | @param[in] Address The physical address of the access.\r |
| 714 | \r |
| 715 | @return A 32-bit value returned from the I/O space.\r |
| 716 | \r |
| 717 | **/\r |
| 718 | UINT32\r |
| 719 | EFIAPI\r |
| 720 | CpuIoRead32 (\r |
| 721 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 722 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 723 | IN UINT64 Address\r |
| 724 | )\r |
| 725 | {\r |
| 726 | return IoRead32 ((UINTN)Address);\r |
| 727 | }\r |
| 728 | \r |
| 729 | /**\r |
| 730 | 64-bit I/O read operations.\r |
| 731 | \r |
| 732 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 733 | by the PEI Foundation.\r |
| 734 | @param[in] This Pointer to local data for the interface.\r |
| 735 | @param[in] Address The physical address of the access.\r |
| 736 | \r |
| 737 | @return A 64-bit value returned from the I/O space.\r |
| 738 | \r |
| 739 | **/\r |
| 740 | UINT64\r |
| 741 | EFIAPI\r |
| 742 | CpuIoRead64 (\r |
| 743 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 744 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 745 | IN UINT64 Address\r |
| 746 | )\r |
| 747 | {\r |
| 748 | return IoRead64 ((UINTN)Address);\r |
| 749 | }\r |
| 750 | \r |
| 751 | /**\r |
| 752 | 8-bit I/O write operations.\r |
| 753 | \r |
| 754 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 755 | by the PEI Foundation.\r |
| 756 | @param[in] This Pointer to local data for the interface.\r |
| 757 | @param[in] Address The physical address of the access.\r |
| 758 | @param[in] Data The data to write.\r |
| 759 | \r |
| 760 | **/\r |
| 761 | VOID\r |
| 762 | EFIAPI\r |
| 763 | CpuIoWrite8 (\r |
| 764 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 765 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 766 | IN UINT64 Address,\r |
| 767 | IN UINT8 Data\r |
| 768 | )\r |
| 769 | {\r |
| 770 | IoWrite8 ((UINTN)Address, Data);\r |
| 771 | }\r |
| 772 | \r |
| 773 | /**\r |
| 774 | 16-bit I/O write operations.\r |
| 775 | \r |
| 776 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 777 | by the PEI Foundation.\r |
| 778 | @param[in] This Pointer to local data for the interface.\r |
| 779 | @param[in] Address The physical address of the access.\r |
| 780 | @param[in] Data The data to write.\r |
| 781 | \r |
| 782 | **/\r |
| 783 | VOID\r |
| 784 | EFIAPI\r |
| 785 | CpuIoWrite16 (\r |
| 786 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 787 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 788 | IN UINT64 Address,\r |
| 789 | IN UINT16 Data\r |
| 790 | )\r |
| 791 | {\r |
| 792 | IoWrite16 ((UINTN)Address, Data);\r |
| 793 | }\r |
| 794 | \r |
| 795 | /**\r |
| 796 | 32-bit I/O write operations.\r |
| 797 | \r |
| 798 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 799 | by the PEI Foundation.\r |
| 800 | @param[in] This Pointer to local data for the interface.\r |
| 801 | @param[in] Address The physical address of the access.\r |
| 802 | @param[in] Data The data to write.\r |
| 803 | \r |
| 804 | **/\r |
| 805 | VOID\r |
| 806 | EFIAPI\r |
| 807 | CpuIoWrite32 (\r |
| 808 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 809 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 810 | IN UINT64 Address,\r |
| 811 | IN UINT32 Data\r |
| 812 | )\r |
| 813 | {\r |
| 814 | IoWrite32 ((UINTN)Address, Data);\r |
| 815 | }\r |
| 816 | \r |
| 817 | /**\r |
| 818 | 64-bit I/O write operations.\r |
| 819 | \r |
| 820 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 821 | by the PEI Foundation.\r |
| 822 | @param[in] This Pointer to local data for the interface.\r |
| 823 | @param[in] Address The physical address of the access.\r |
| 824 | @param[in] Data The data to write.\r |
| 825 | \r |
| 826 | **/\r |
| 827 | VOID\r |
| 828 | EFIAPI\r |
| 829 | CpuIoWrite64 (\r |
| 830 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 831 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 832 | IN UINT64 Address,\r |
| 833 | IN UINT64 Data\r |
| 834 | )\r |
| 835 | {\r |
| 836 | IoWrite64 ((UINTN)Address, Data);\r |
| 837 | }\r |
| 838 | \r |
| 839 | /**\r |
| 840 | 8-bit memory read operations.\r |
| 841 | \r |
| 842 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 843 | by the PEI Foundation.\r |
| 844 | @param[in] This Pointer to local data for the interface.\r |
| 845 | @param[in] Address The physical address of the access.\r |
| 846 | \r |
| 847 | @return An 8-bit value returned from the memory space.\r |
| 848 | \r |
| 849 | **/\r |
| 850 | UINT8\r |
| 851 | EFIAPI\r |
| 852 | CpuMemRead8 (\r |
| 853 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 854 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 855 | IN UINT64 Address\r |
| 856 | )\r |
| 857 | {\r |
| 858 | return MmioRead8 ((UINTN)Address);\r |
| 859 | }\r |
| 860 | \r |
| 861 | /**\r |
| 862 | 16-bit memory read operations.\r |
| 863 | \r |
| 864 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 865 | by the PEI Foundation.\r |
| 866 | @param[in] This Pointer to local data for the interface.\r |
| 867 | @param[in] Address The physical address of the access.\r |
| 868 | \r |
| 869 | @return A 16-bit value returned from the memory space.\r |
| 870 | \r |
| 871 | **/\r |
| 872 | UINT16\r |
| 873 | EFIAPI\r |
| 874 | CpuMemRead16 (\r |
| 875 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 876 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 877 | IN UINT64 Address\r |
| 878 | )\r |
| 879 | {\r |
| 880 | return MmioRead16 ((UINTN)Address);\r |
| 881 | }\r |
| 882 | \r |
| 883 | /**\r |
| 884 | 32-bit memory read operations.\r |
| 885 | \r |
| 886 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 887 | by the PEI Foundation.\r |
| 888 | @param[in] This Pointer to local data for the interface.\r |
| 889 | @param[in] Address The physical address of the access.\r |
| 890 | \r |
| 891 | @return A 32-bit value returned from the memory space.\r |
| 892 | \r |
| 893 | **/\r |
| 894 | UINT32\r |
| 895 | EFIAPI\r |
| 896 | CpuMemRead32 (\r |
| 897 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 898 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 899 | IN UINT64 Address\r |
| 900 | )\r |
| 901 | {\r |
| 902 | return MmioRead32 ((UINTN)Address);\r |
| 903 | }\r |
| 904 | \r |
| 905 | /**\r |
| 906 | 64-bit memory read operations.\r |
| 907 | \r |
| 908 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 909 | by the PEI Foundation.\r |
| 910 | @param[in] This Pointer to local data for the interface.\r |
| 911 | @param[in] Address The physical address of the access.\r |
| 912 | \r |
| 913 | @return A 64-bit value returned from the memory space.\r |
| 914 | \r |
| 915 | **/\r |
| 916 | UINT64\r |
| 917 | EFIAPI\r |
| 918 | CpuMemRead64 (\r |
| 919 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 920 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 921 | IN UINT64 Address\r |
| 922 | )\r |
| 923 | {\r |
| 924 | return MmioRead64 ((UINTN)Address);\r |
| 925 | }\r |
| 926 | \r |
| 927 | /**\r |
| 928 | 8-bit memory write operations.\r |
| 929 | \r |
| 930 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 931 | by the PEI Foundation.\r |
| 932 | @param[in] This Pointer to local data for the interface.\r |
| 933 | @param[in] Address The physical address of the access.\r |
| 934 | @param[in] Data The data to write.\r |
| 935 | \r |
| 936 | **/\r |
| 937 | VOID\r |
| 938 | EFIAPI\r |
| 939 | CpuMemWrite8 (\r |
| 940 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 941 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 942 | IN UINT64 Address,\r |
| 943 | IN UINT8 Data\r |
| 944 | )\r |
| 945 | {\r |
| 946 | MmioWrite8 ((UINTN)Address, Data);\r |
| 947 | }\r |
| 948 | \r |
| 949 | /**\r |
| 950 | 16-bit memory write operations.\r |
| 951 | \r |
| 952 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 953 | by the PEI Foundation.\r |
| 954 | @param[in] This Pointer to local data for the interface.\r |
| 955 | @param[in] Address The physical address of the access.\r |
| 956 | @param[in] Data The data to write.\r |
| 957 | \r |
| 958 | **/\r |
| 959 | VOID\r |
| 960 | EFIAPI\r |
| 961 | CpuMemWrite16 (\r |
| 962 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 963 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 964 | IN UINT64 Address,\r |
| 965 | IN UINT16 Data\r |
| 966 | )\r |
| 967 | {\r |
| 968 | MmioWrite16 ((UINTN)Address, Data);\r |
| 969 | }\r |
| 970 | \r |
| 971 | /**\r |
| 972 | 32-bit memory write operations.\r |
| 973 | \r |
| 974 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 975 | by the PEI Foundation.\r |
| 976 | @param[in] This Pointer to local data for the interface.\r |
| 977 | @param[in] Address The physical address of the access.\r |
| 978 | @param[in] Data The data to write.\r |
| 979 | \r |
| 980 | **/\r |
| 981 | VOID\r |
| 982 | EFIAPI\r |
| 983 | CpuMemWrite32 (\r |
| 984 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 985 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 986 | IN UINT64 Address,\r |
| 987 | IN UINT32 Data\r |
| 988 | )\r |
| 989 | {\r |
| 990 | MmioWrite32 ((UINTN)Address, Data);\r |
| 991 | }\r |
| 992 | \r |
| 993 | /**\r |
| 994 | 64-bit memory write operations.\r |
| 995 | \r |
| 996 | @param[in] PeiServices An indirect pointer to the PEI Services Table published \r |
| 997 | by the PEI Foundation.\r |
| 998 | @param[in] This Pointer to local data for the interface.\r |
| 999 | @param[in] Address The physical address of the access.\r |
| 1000 | @param[in] Data The data to write.\r |
| 1001 | \r |
| 1002 | **/\r |
| 1003 | VOID\r |
| 1004 | EFIAPI\r |
| 1005 | CpuMemWrite64 (\r |
| 1006 | IN CONST EFI_PEI_SERVICES **PeiServices,\r |
| 1007 | IN CONST EFI_PEI_CPU_IO_PPI *This,\r |
| 1008 | IN UINT64 Address,\r |
| 1009 | IN UINT64 Data\r |
| 1010 | )\r |
| 1011 | {\r |
| 1012 | MmioWrite64 ((UINTN)Address, Data);\r |
| 1013 | }\r |
| 1014 | \r |
| 1015 | /**\r |
| 1016 | The Entry point of the CPU I/O PEIM\r |
| 1017 | \r |
| 1018 | This function is the Entry point of the CPU I/O PEIM which installs CpuIoPpi.\r |
| 1019 | \r |
| 1020 | @param[in] FileHandle Pointer to image file handle.\r |
| 1021 | @param[in] PeiServices Pointer to PEI Services Table \r |
| 1022 | \r |
| 1023 | @retval EFI_SUCCESS CPU I/O PPI successfully installed\r |
| 1024 | \r |
| 1025 | **/\r |
| 1026 | EFI_STATUS\r |
| 1027 | EFIAPI\r |
| 1028 | CpuIoInitialize (\r |
| 1029 | IN EFI_PEI_FILE_HANDLE FileHandle,\r |
| 1030 | IN CONST EFI_PEI_SERVICES **PeiServices\r |
| 1031 | )\r |
| 1032 | {\r |
| 1033 | EFI_STATUS Status;\r |
| 1034 | \r |
| 1035 | //\r |
| 1036 | // Register so it will be automatically shadowed to memory\r |
| 1037 | //\r |
| 1038 | Status = PeiServicesRegisterForShadow (FileHandle);\r |
| 1039 | \r |
| 1040 | //\r |
| 1041 | // Make CpuIo pointer in PeiService table point to gCpuIoPpi\r |
| 1042 | //\r |
| 1043 | (*((EFI_PEI_SERVICES **)PeiServices))->CpuIo = &gCpuIoPpi;\r |
| 1044 | \r |
| 1045 | if (Status == EFI_ALREADY_STARTED) {\r |
| 1046 | //\r |
| 1047 | // Shadow completed and running from memory\r |
| 1048 | //\r |
| 1049 | DEBUG ((EFI_D_INFO, "CpuIO PPI has been loaded into memory. Reinstalled PPI=0x%x\n", &gCpuIoPpi));\r |
| 1050 | } else {\r |
| 1051 | Status = PeiServicesInstallPpi (&gPpiList);\r |
| 1052 | ASSERT_EFI_ERROR (Status);\r |
| 1053 | }\r |
| 1054 | \r |
| 1055 | return EFI_SUCCESS;\r |
| 1056 | }\r |
projects / mirror_edk2.git / blame