tbfadt.c revision 1.3.2.2
1 1.3.2.2 bouyer /****************************************************************************** 2 1.3.2.2 bouyer * 3 1.3.2.2 bouyer * Module Name: tbfadt - FADT table utilities 4 1.3.2.2 bouyer * 5 1.3.2.2 bouyer *****************************************************************************/ 6 1.3.2.2 bouyer 7 1.3.2.2 bouyer /* 8 1.3.2.2 bouyer * Copyright (C) 2000 - 2011, Intel Corp. 9 1.3.2.2 bouyer * All rights reserved. 10 1.3.2.2 bouyer * 11 1.3.2.2 bouyer * Redistribution and use in source and binary forms, with or without 12 1.3.2.2 bouyer * modification, are permitted provided that the following conditions 13 1.3.2.2 bouyer * are met: 14 1.3.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 15 1.3.2.2 bouyer * notice, this list of conditions, and the following disclaimer, 16 1.3.2.2 bouyer * without modification. 17 1.3.2.2 bouyer * 2. Redistributions in binary form must reproduce at minimum a disclaimer 18 1.3.2.2 bouyer * substantially similar to the "NO WARRANTY" disclaimer below 19 1.3.2.2 bouyer * ("Disclaimer") and any redistribution must be conditioned upon 20 1.3.2.2 bouyer * including a substantially similar Disclaimer requirement for further 21 1.3.2.2 bouyer * binary redistribution. 22 1.3.2.2 bouyer * 3. Neither the names of the above-listed copyright holders nor the names 23 1.3.2.2 bouyer * of any contributors may be used to endorse or promote products derived 24 1.3.2.2 bouyer * from this software without specific prior written permission. 25 1.3.2.2 bouyer * 26 1.3.2.2 bouyer * Alternatively, this software may be distributed under the terms of the 27 1.3.2.2 bouyer * GNU General Public License ("GPL") version 2 as published by the Free 28 1.3.2.2 bouyer * Software Foundation. 29 1.3.2.2 bouyer * 30 1.3.2.2 bouyer * NO WARRANTY 31 1.3.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 32 1.3.2.2 bouyer * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 33 1.3.2.2 bouyer * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 34 1.3.2.2 bouyer * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 35 1.3.2.2 bouyer * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 1.3.2.2 bouyer * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 1.3.2.2 bouyer * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 1.3.2.2 bouyer * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.3.2.2 bouyer * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 1.3.2.2 bouyer * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 41 1.3.2.2 bouyer * POSSIBILITY OF SUCH DAMAGES. 42 1.3.2.2 bouyer */ 43 1.3.2.2 bouyer 44 1.3.2.2 bouyer #define __TBFADT_C__ 45 1.3.2.2 bouyer 46 1.3.2.2 bouyer #include "acpi.h" 47 1.3.2.2 bouyer #include "accommon.h" 48 1.3.2.2 bouyer #include "actables.h" 49 1.3.2.2 bouyer 50 1.3.2.2 bouyer #define _COMPONENT ACPI_TABLES 51 1.3.2.2 bouyer ACPI_MODULE_NAME ("tbfadt") 52 1.3.2.2 bouyer 53 1.3.2.2 bouyer /* Local prototypes */ 54 1.3.2.2 bouyer 55 1.3.2.2 bouyer static ACPI_INLINE void 56 1.3.2.2 bouyer AcpiTbInitGenericAddress ( 57 1.3.2.2 bouyer ACPI_GENERIC_ADDRESS *GenericAddress, 58 1.3.2.2 bouyer UINT8 SpaceId, 59 1.3.2.2 bouyer UINT8 ByteWidth, 60 1.3.2.2 bouyer UINT64 Address); 61 1.3.2.2 bouyer 62 1.3.2.2 bouyer static void 63 1.3.2.2 bouyer AcpiTbConvertFadt ( 64 1.3.2.2 bouyer void); 65 1.3.2.2 bouyer 66 1.3.2.2 bouyer static void 67 1.3.2.2 bouyer AcpiTbValidateFadt ( 68 1.3.2.2 bouyer void); 69 1.3.2.2 bouyer 70 1.3.2.2 bouyer static void 71 1.3.2.2 bouyer AcpiTbSetupFadtRegisters ( 72 1.3.2.2 bouyer void); 73 1.3.2.2 bouyer 74 1.3.2.2 bouyer 75 1.3.2.2 bouyer /* Table for conversion of FADT to common internal format and FADT validation */ 76 1.3.2.2 bouyer 77 1.3.2.2 bouyer typedef struct acpi_fadt_info 78 1.3.2.2 bouyer { 79 1.3.2.2 bouyer const char *Name; 80 1.3.2.2 bouyer UINT8 Address64; 81 1.3.2.2 bouyer UINT8 Address32; 82 1.3.2.2 bouyer UINT8 Length; 83 1.3.2.2 bouyer UINT8 DefaultLength; 84 1.3.2.2 bouyer UINT8 Type; 85 1.3.2.2 bouyer 86 1.3.2.2 bouyer } ACPI_FADT_INFO; 87 1.3.2.2 bouyer 88 1.3.2.2 bouyer #define ACPI_FADT_REQUIRED 1 89 1.3.2.2 bouyer #define ACPI_FADT_SEPARATE_LENGTH 2 90 1.3.2.2 bouyer 91 1.3.2.2 bouyer static ACPI_FADT_INFO FadtInfoTable[] = 92 1.3.2.2 bouyer { 93 1.3.2.2 bouyer {"Pm1aEventBlock", 94 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm1aEventBlock), 95 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm1aEventBlock), 96 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm1EventLength), 97 1.3.2.2 bouyer ACPI_PM1_REGISTER_WIDTH * 2, /* Enable + Status register */ 98 1.3.2.2 bouyer ACPI_FADT_REQUIRED}, 99 1.3.2.2 bouyer 100 1.3.2.2 bouyer {"Pm1bEventBlock", 101 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm1bEventBlock), 102 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm1bEventBlock), 103 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm1EventLength), 104 1.3.2.2 bouyer ACPI_PM1_REGISTER_WIDTH * 2, /* Enable + Status register */ 105 1.3.2.2 bouyer 0}, 106 1.3.2.2 bouyer 107 1.3.2.2 bouyer {"Pm1aControlBlock", 108 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm1aControlBlock), 109 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm1aControlBlock), 110 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm1ControlLength), 111 1.3.2.2 bouyer ACPI_PM1_REGISTER_WIDTH, 112 1.3.2.2 bouyer ACPI_FADT_REQUIRED}, 113 1.3.2.2 bouyer 114 1.3.2.2 bouyer {"Pm1bControlBlock", 115 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm1bControlBlock), 116 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm1bControlBlock), 117 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm1ControlLength), 118 1.3.2.2 bouyer ACPI_PM1_REGISTER_WIDTH, 119 1.3.2.2 bouyer 0}, 120 1.3.2.2 bouyer 121 1.3.2.2 bouyer {"Pm2ControlBlock", 122 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm2ControlBlock), 123 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm2ControlBlock), 124 1.3.2.2 bouyer ACPI_FADT_OFFSET (Pm2ControlLength), 125 1.3.2.2 bouyer ACPI_PM2_REGISTER_WIDTH, 126 1.3.2.2 bouyer ACPI_FADT_SEPARATE_LENGTH}, 127 1.3.2.2 bouyer 128 1.3.2.2 bouyer {"PmTimerBlock", 129 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPmTimerBlock), 130 1.3.2.2 bouyer ACPI_FADT_OFFSET (PmTimerBlock), 131 1.3.2.2 bouyer ACPI_FADT_OFFSET (PmTimerLength), 132 1.3.2.2 bouyer ACPI_PM_TIMER_WIDTH, 133 1.3.2.2 bouyer ACPI_FADT_REQUIRED}, 134 1.3.2.2 bouyer 135 1.3.2.2 bouyer {"Gpe0Block", 136 1.3.2.2 bouyer ACPI_FADT_OFFSET (XGpe0Block), 137 1.3.2.2 bouyer ACPI_FADT_OFFSET (Gpe0Block), 138 1.3.2.2 bouyer ACPI_FADT_OFFSET (Gpe0BlockLength), 139 1.3.2.2 bouyer 0, 140 1.3.2.2 bouyer ACPI_FADT_SEPARATE_LENGTH}, 141 1.3.2.2 bouyer 142 1.3.2.2 bouyer {"Gpe1Block", 143 1.3.2.2 bouyer ACPI_FADT_OFFSET (XGpe1Block), 144 1.3.2.2 bouyer ACPI_FADT_OFFSET (Gpe1Block), 145 1.3.2.2 bouyer ACPI_FADT_OFFSET (Gpe1BlockLength), 146 1.3.2.2 bouyer 0, 147 1.3.2.2 bouyer ACPI_FADT_SEPARATE_LENGTH} 148 1.3.2.2 bouyer }; 149 1.3.2.2 bouyer 150 1.3.2.2 bouyer #define ACPI_FADT_INFO_ENTRIES \ 151 1.3.2.2 bouyer (sizeof (FadtInfoTable) / sizeof (ACPI_FADT_INFO)) 152 1.3.2.2 bouyer 153 1.3.2.2 bouyer 154 1.3.2.2 bouyer /* Table used to split Event Blocks into separate status/enable registers */ 155 1.3.2.2 bouyer 156 1.3.2.2 bouyer typedef struct acpi_fadt_pm_info 157 1.3.2.2 bouyer { 158 1.3.2.2 bouyer ACPI_GENERIC_ADDRESS *Target; 159 1.3.2.2 bouyer UINT8 Source; 160 1.3.2.2 bouyer UINT8 RegisterNum; 161 1.3.2.2 bouyer 162 1.3.2.2 bouyer } ACPI_FADT_PM_INFO; 163 1.3.2.2 bouyer 164 1.3.2.2 bouyer static ACPI_FADT_PM_INFO FadtPmInfoTable[] = 165 1.3.2.2 bouyer { 166 1.3.2.2 bouyer {&AcpiGbl_XPm1aStatus, 167 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm1aEventBlock), 168 1.3.2.2 bouyer 0}, 169 1.3.2.2 bouyer 170 1.3.2.2 bouyer {&AcpiGbl_XPm1aEnable, 171 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm1aEventBlock), 172 1.3.2.2 bouyer 1}, 173 1.3.2.2 bouyer 174 1.3.2.2 bouyer {&AcpiGbl_XPm1bStatus, 175 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm1bEventBlock), 176 1.3.2.2 bouyer 0}, 177 1.3.2.2 bouyer 178 1.3.2.2 bouyer {&AcpiGbl_XPm1bEnable, 179 1.3.2.2 bouyer ACPI_FADT_OFFSET (XPm1bEventBlock), 180 1.3.2.2 bouyer 1} 181 1.3.2.2 bouyer }; 182 1.3.2.2 bouyer 183 1.3.2.2 bouyer #define ACPI_FADT_PM_INFO_ENTRIES \ 184 1.3.2.2 bouyer (sizeof (FadtPmInfoTable) / sizeof (ACPI_FADT_PM_INFO)) 185 1.3.2.2 bouyer 186 1.3.2.2 bouyer 187 1.3.2.2 bouyer /******************************************************************************* 188 1.3.2.2 bouyer * 189 1.3.2.2 bouyer * FUNCTION: AcpiTbInitGenericAddress 190 1.3.2.2 bouyer * 191 1.3.2.2 bouyer * PARAMETERS: GenericAddress - GAS struct to be initialized 192 1.3.2.2 bouyer * SpaceId - ACPI Space ID for this register 193 1.3.2.2 bouyer * ByteWidth - Width of this register, in bytes 194 1.3.2.2 bouyer * Address - Address of the register 195 1.3.2.2 bouyer * 196 1.3.2.2 bouyer * RETURN: None 197 1.3.2.2 bouyer * 198 1.3.2.2 bouyer * DESCRIPTION: Initialize a Generic Address Structure (GAS) 199 1.3.2.2 bouyer * See the ACPI specification for a full description and 200 1.3.2.2 bouyer * definition of this structure. 201 1.3.2.2 bouyer * 202 1.3.2.2 bouyer ******************************************************************************/ 203 1.3.2.2 bouyer 204 1.3.2.2 bouyer static ACPI_INLINE void 205 1.3.2.2 bouyer AcpiTbInitGenericAddress ( 206 1.3.2.2 bouyer ACPI_GENERIC_ADDRESS *GenericAddress, 207 1.3.2.2 bouyer UINT8 SpaceId, 208 1.3.2.2 bouyer UINT8 ByteWidth, 209 1.3.2.2 bouyer UINT64 Address) 210 1.3.2.2 bouyer { 211 1.3.2.2 bouyer 212 1.3.2.2 bouyer /* 213 1.3.2.2 bouyer * The 64-bit Address field is non-aligned in the byte packed 214 1.3.2.2 bouyer * GAS struct. 215 1.3.2.2 bouyer */ 216 1.3.2.2 bouyer ACPI_MOVE_64_TO_64 (&GenericAddress->Address, &Address); 217 1.3.2.2 bouyer 218 1.3.2.2 bouyer /* All other fields are byte-wide */ 219 1.3.2.2 bouyer 220 1.3.2.2 bouyer GenericAddress->SpaceId = SpaceId; 221 1.3.2.2 bouyer GenericAddress->BitWidth = (UINT8) ACPI_MUL_8 (ByteWidth); 222 1.3.2.2 bouyer GenericAddress->BitOffset = 0; 223 1.3.2.2 bouyer GenericAddress->AccessWidth = 0; /* Access width ANY */ 224 1.3.2.2 bouyer } 225 1.3.2.2 bouyer 226 1.3.2.2 bouyer 227 1.3.2.2 bouyer /******************************************************************************* 228 1.3.2.2 bouyer * 229 1.3.2.2 bouyer * FUNCTION: AcpiTbParseFadt 230 1.3.2.2 bouyer * 231 1.3.2.2 bouyer * PARAMETERS: TableIndex - Index for the FADT 232 1.3.2.2 bouyer * 233 1.3.2.2 bouyer * RETURN: None 234 1.3.2.2 bouyer * 235 1.3.2.2 bouyer * DESCRIPTION: Initialize the FADT, DSDT and FACS tables 236 1.3.2.2 bouyer * (FADT contains the addresses of the DSDT and FACS) 237 1.3.2.2 bouyer * 238 1.3.2.2 bouyer ******************************************************************************/ 239 1.3.2.2 bouyer 240 1.3.2.2 bouyer void 241 1.3.2.2 bouyer AcpiTbParseFadt ( 242 1.3.2.2 bouyer UINT32 TableIndex) 243 1.3.2.2 bouyer { 244 1.3.2.2 bouyer UINT32 Length; 245 1.3.2.2 bouyer ACPI_TABLE_HEADER *Table; 246 1.3.2.2 bouyer 247 1.3.2.2 bouyer 248 1.3.2.2 bouyer /* 249 1.3.2.2 bouyer * The FADT has multiple versions with different lengths, 250 1.3.2.2 bouyer * and it contains pointers to both the DSDT and FACS tables. 251 1.3.2.2 bouyer * 252 1.3.2.2 bouyer * Get a local copy of the FADT and convert it to a common format 253 1.3.2.2 bouyer * Map entire FADT, assumed to be smaller than one page. 254 1.3.2.2 bouyer */ 255 1.3.2.2 bouyer Length = AcpiGbl_RootTableList.Tables[TableIndex].Length; 256 1.3.2.2 bouyer 257 1.3.2.2 bouyer Table = AcpiOsMapMemory ( 258 1.3.2.2 bouyer AcpiGbl_RootTableList.Tables[TableIndex].Address, Length); 259 1.3.2.2 bouyer if (!Table) 260 1.3.2.2 bouyer { 261 1.3.2.2 bouyer return; 262 1.3.2.2 bouyer } 263 1.3.2.2 bouyer 264 1.3.2.2 bouyer /* 265 1.3.2.2 bouyer * Validate the FADT checksum before we copy the table. Ignore 266 1.3.2.2 bouyer * checksum error as we want to try to get the DSDT and FACS. 267 1.3.2.2 bouyer */ 268 1.3.2.2 bouyer (void) AcpiTbVerifyChecksum (Table, Length); 269 1.3.2.2 bouyer 270 1.3.2.2 bouyer /* Create a local copy of the FADT in common ACPI 2.0+ format */ 271 1.3.2.2 bouyer 272 1.3.2.2 bouyer AcpiTbCreateLocalFadt (Table, Length); 273 1.3.2.2 bouyer 274 1.3.2.2 bouyer /* All done with the real FADT, unmap it */ 275 1.3.2.2 bouyer 276 1.3.2.2 bouyer AcpiOsUnmapMemory (Table, Length); 277 1.3.2.2 bouyer 278 1.3.2.2 bouyer /* Obtain the DSDT and FACS tables via their addresses within the FADT */ 279 1.3.2.2 bouyer 280 1.3.2.2 bouyer AcpiTbInstallTable ((ACPI_PHYSICAL_ADDRESS) AcpiGbl_FADT.XDsdt, 281 1.3.2.2 bouyer ACPI_SIG_DSDT, ACPI_TABLE_INDEX_DSDT); 282 1.3.2.2 bouyer 283 1.3.2.2 bouyer AcpiTbInstallTable ((ACPI_PHYSICAL_ADDRESS) AcpiGbl_FADT.XFacs, 284 1.3.2.2 bouyer ACPI_SIG_FACS, ACPI_TABLE_INDEX_FACS); 285 1.3.2.2 bouyer } 286 1.3.2.2 bouyer 287 1.3.2.2 bouyer 288 1.3.2.2 bouyer /******************************************************************************* 289 1.3.2.2 bouyer * 290 1.3.2.2 bouyer * FUNCTION: AcpiTbCreateLocalFadt 291 1.3.2.2 bouyer * 292 1.3.2.2 bouyer * PARAMETERS: Table - Pointer to BIOS FADT 293 1.3.2.2 bouyer * Length - Length of the table 294 1.3.2.2 bouyer * 295 1.3.2.2 bouyer * RETURN: None 296 1.3.2.2 bouyer * 297 1.3.2.2 bouyer * DESCRIPTION: Get a local copy of the FADT and convert it to a common format. 298 1.3.2.2 bouyer * Performs validation on some important FADT fields. 299 1.3.2.2 bouyer * 300 1.3.2.2 bouyer * NOTE: We create a local copy of the FADT regardless of the version. 301 1.3.2.2 bouyer * 302 1.3.2.2 bouyer ******************************************************************************/ 303 1.3.2.2 bouyer 304 1.3.2.2 bouyer void 305 1.3.2.2 bouyer AcpiTbCreateLocalFadt ( 306 1.3.2.2 bouyer ACPI_TABLE_HEADER *Table, 307 1.3.2.2 bouyer UINT32 Length) 308 1.3.2.2 bouyer { 309 1.3.2.2 bouyer 310 1.3.2.2 bouyer /* 311 1.3.2.2 bouyer * Check if the FADT is larger than the largest table that we expect 312 1.3.2.2 bouyer * (the ACPI 2.0/3.0 version). If so, truncate the table, and issue 313 1.3.2.2 bouyer * a warning. 314 1.3.2.2 bouyer */ 315 1.3.2.2 bouyer if (Length > sizeof (ACPI_TABLE_FADT)) 316 1.3.2.2 bouyer { 317 1.3.2.2 bouyer ACPI_WARNING ((AE_INFO, 318 1.3.2.2 bouyer "FADT (revision %u) is longer than ACPI 2.0 version, " 319 1.3.2.2 bouyer "truncating length %u to %u", 320 1.3.2.2 bouyer Table->Revision, Length, (UINT32) sizeof (ACPI_TABLE_FADT))); 321 1.3.2.2 bouyer } 322 1.3.2.2 bouyer 323 1.3.2.2 bouyer /* Clear the entire local FADT */ 324 1.3.2.2 bouyer 325 1.3.2.2 bouyer ACPI_MEMSET (&AcpiGbl_FADT, 0, sizeof (ACPI_TABLE_FADT)); 326 1.3.2.2 bouyer 327 1.3.2.2 bouyer /* Copy the original FADT, up to sizeof (ACPI_TABLE_FADT) */ 328 1.3.2.2 bouyer 329 1.3.2.2 bouyer ACPI_MEMCPY (&AcpiGbl_FADT, Table, 330 1.3.2.2 bouyer ACPI_MIN (Length, sizeof (ACPI_TABLE_FADT))); 331 1.3.2.2 bouyer 332 1.3.2.2 bouyer /* Convert the local copy of the FADT to the common internal format */ 333 1.3.2.2 bouyer 334 1.3.2.2 bouyer AcpiTbConvertFadt (); 335 1.3.2.2 bouyer 336 1.3.2.2 bouyer /* Validate FADT values now, before we make any changes */ 337 1.3.2.2 bouyer 338 1.3.2.2 bouyer AcpiTbValidateFadt (); 339 1.3.2.2 bouyer 340 1.3.2.2 bouyer /* Initialize the global ACPI register structures */ 341 1.3.2.2 bouyer 342 1.3.2.2 bouyer AcpiTbSetupFadtRegisters (); 343 1.3.2.2 bouyer } 344 1.3.2.2 bouyer 345 1.3.2.2 bouyer 346 1.3.2.2 bouyer /******************************************************************************* 347 1.3.2.2 bouyer * 348 1.3.2.2 bouyer * FUNCTION: AcpiTbConvertFadt 349 1.3.2.2 bouyer * 350 1.3.2.2 bouyer * PARAMETERS: None, uses AcpiGbl_FADT 351 1.3.2.2 bouyer * 352 1.3.2.2 bouyer * RETURN: None 353 1.3.2.2 bouyer * 354 1.3.2.2 bouyer * DESCRIPTION: Converts all versions of the FADT to a common internal format. 355 1.3.2.2 bouyer * Expand 32-bit addresses to 64-bit as necessary. 356 1.3.2.2 bouyer * 357 1.3.2.2 bouyer * NOTE: AcpiGbl_FADT must be of size (ACPI_TABLE_FADT), 358 1.3.2.2 bouyer * and must contain a copy of the actual FADT. 359 1.3.2.2 bouyer * 360 1.3.2.2 bouyer * Notes on 64-bit register addresses: 361 1.3.2.2 bouyer * 362 1.3.2.2 bouyer * After this FADT conversion, later ACPICA code will only use the 64-bit "X" 363 1.3.2.2 bouyer * fields of the FADT for all ACPI register addresses. 364 1.3.2.2 bouyer * 365 1.3.2.2 bouyer * The 64-bit "X" fields are optional extensions to the original 32-bit FADT 366 1.3.2.2 bouyer * V1.0 fields. Even if they are present in the FADT, they are optional and 367 1.3.2.2 bouyer * are unused if the BIOS sets them to zero. Therefore, we must copy/expand 368 1.3.2.2 bouyer * 32-bit V1.0 fields if the corresponding X field is zero. 369 1.3.2.2 bouyer * 370 1.3.2.2 bouyer * For ACPI 1.0 FADTs, all 32-bit address fields are expanded to the 371 1.3.2.2 bouyer * corresponding "X" fields in the internal FADT. 372 1.3.2.2 bouyer * 373 1.3.2.2 bouyer * For ACPI 2.0+ FADTs, all valid (non-zero) 32-bit address fields are expanded 374 1.3.2.2 bouyer * to the corresponding 64-bit X fields. For compatibility with other ACPI 375 1.3.2.2 bouyer * implementations, we ignore the 64-bit field if the 32-bit field is valid, 376 1.3.2.2 bouyer * regardless of whether the host OS is 32-bit or 64-bit. 377 1.3.2.2 bouyer * 378 1.3.2.2 bouyer ******************************************************************************/ 379 1.3.2.2 bouyer 380 1.3.2.2 bouyer static void 381 1.3.2.2 bouyer AcpiTbConvertFadt ( 382 1.3.2.2 bouyer void) 383 1.3.2.2 bouyer { 384 1.3.2.2 bouyer ACPI_GENERIC_ADDRESS *Address64; 385 1.3.2.2 bouyer UINT32 Address32; 386 1.3.2.2 bouyer UINT32 i; 387 1.3.2.2 bouyer 388 1.3.2.2 bouyer 389 1.3.2.2 bouyer /* Update the local FADT table header length */ 390 1.3.2.2 bouyer 391 1.3.2.2 bouyer AcpiGbl_FADT.Header.Length = sizeof (ACPI_TABLE_FADT); 392 1.3.2.2 bouyer 393 1.3.2.2 bouyer /* 394 1.3.2.2 bouyer * Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary. 395 1.3.2.2 bouyer * Later code will always use the X 64-bit field. 396 1.3.2.2 bouyer */ 397 1.3.2.2 bouyer if (!AcpiGbl_FADT.XFacs) 398 1.3.2.2 bouyer { 399 1.3.2.2 bouyer AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs; 400 1.3.2.2 bouyer } 401 1.3.2.2 bouyer if (!AcpiGbl_FADT.XDsdt) 402 1.3.2.2 bouyer { 403 1.3.2.2 bouyer AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt; 404 1.3.2.2 bouyer } 405 1.3.2.2 bouyer 406 1.3.2.2 bouyer /* 407 1.3.2.2 bouyer * For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which 408 1.3.2.2 bouyer * should be zero are indeed zero. This will workaround BIOSs that 409 1.3.2.2 bouyer * inadvertently place values in these fields. 410 1.3.2.2 bouyer * 411 1.3.2.2 bouyer * The ACPI 1.0 reserved fields that will be zeroed are the bytes located 412 1.3.2.2 bouyer * at offset 45, 55, 95, and the word located at offset 109, 110. 413 1.3.2.2 bouyer * 414 1.3.2.2 bouyer * Note: The FADT revision value is unreliable. Only the length can be 415 1.3.2.2 bouyer * trusted. 416 1.3.2.2 bouyer */ 417 1.3.2.2 bouyer if (AcpiGbl_FADT.Header.Length <= ACPI_FADT_V2_SIZE) 418 1.3.2.2 bouyer { 419 1.3.2.2 bouyer AcpiGbl_FADT.PreferredProfile = 0; 420 1.3.2.2 bouyer AcpiGbl_FADT.PstateControl = 0; 421 1.3.2.2 bouyer AcpiGbl_FADT.CstControl = 0; 422 1.3.2.2 bouyer AcpiGbl_FADT.BootFlags = 0; 423 1.3.2.2 bouyer } 424 1.3.2.2 bouyer 425 1.3.2.2 bouyer /* 426 1.3.2.2 bouyer * Expand the ACPI 1.0 32-bit addresses to the ACPI 2.0 64-bit "X" 427 1.3.2.2 bouyer * generic address structures as necessary. Later code will always use 428 1.3.2.2 bouyer * the 64-bit address structures. 429 1.3.2.2 bouyer * 430 1.3.2.2 bouyer * March 2009: 431 1.3.2.2 bouyer * We now always use the 32-bit address if it is valid (non-null). This 432 1.3.2.2 bouyer * is not in accordance with the ACPI specification which states that 433 1.3.2.2 bouyer * the 64-bit address supersedes the 32-bit version, but we do this for 434 1.3.2.2 bouyer * compatibility with other ACPI implementations. Most notably, in the 435 1.3.2.2 bouyer * case where both the 32 and 64 versions are non-null, we use the 32-bit 436 1.3.2.2 bouyer * version. This is the only address that is guaranteed to have been 437 1.3.2.2 bouyer * tested by the BIOS manufacturer. 438 1.3.2.2 bouyer */ 439 1.3.2.2 bouyer for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) 440 1.3.2.2 bouyer { 441 1.3.2.2 bouyer Address32 = *ACPI_ADD_PTR (UINT32, 442 1.3.2.2 bouyer &AcpiGbl_FADT, FadtInfoTable[i].Address32); 443 1.3.2.2 bouyer 444 1.3.2.2 bouyer Address64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS, 445 1.3.2.2 bouyer &AcpiGbl_FADT, FadtInfoTable[i].Address64); 446 1.3.2.2 bouyer 447 1.3.2.2 bouyer /* 448 1.3.2.2 bouyer * If both 32- and 64-bit addresses are valid (non-zero), 449 1.3.2.2 bouyer * they must match. 450 1.3.2.2 bouyer */ 451 1.3.2.2 bouyer if (Address64->Address && Address32 && 452 1.3.2.2 bouyer (Address64->Address != (UINT64) Address32)) 453 1.3.2.2 bouyer { 454 1.3.2.2 bouyer ACPI_ERROR ((AE_INFO, 455 1.3.2.2 bouyer "32/64X address mismatch in %s: 0x%8.8X/0x%8.8X%8.8X, using 32", 456 1.3.2.2 bouyer FadtInfoTable[i].Name, Address32, 457 1.3.2.2 bouyer ACPI_FORMAT_UINT64 (Address64->Address))); 458 1.3.2.2 bouyer } 459 1.3.2.2 bouyer 460 1.3.2.2 bouyer /* Always use 32-bit address if it is valid (non-null) */ 461 1.3.2.2 bouyer 462 1.3.2.2 bouyer if (Address32) 463 1.3.2.2 bouyer { 464 1.3.2.2 bouyer /* 465 1.3.2.2 bouyer * Copy the 32-bit address to the 64-bit GAS structure. The 466 1.3.2.2 bouyer * Space ID is always I/O for 32-bit legacy address fields 467 1.3.2.2 bouyer */ 468 1.3.2.2 bouyer AcpiTbInitGenericAddress (Address64, ACPI_ADR_SPACE_SYSTEM_IO, 469 1.3.2.2 bouyer *ACPI_ADD_PTR (UINT8, &AcpiGbl_FADT, FadtInfoTable[i].Length), 470 1.3.2.2 bouyer (UINT64) Address32); 471 1.3.2.2 bouyer } 472 1.3.2.2 bouyer } 473 1.3.2.2 bouyer } 474 1.3.2.2 bouyer 475 1.3.2.2 bouyer 476 1.3.2.2 bouyer /******************************************************************************* 477 1.3.2.2 bouyer * 478 1.3.2.2 bouyer * FUNCTION: AcpiTbValidateFadt 479 1.3.2.2 bouyer * 480 1.3.2.2 bouyer * PARAMETERS: Table - Pointer to the FADT to be validated 481 1.3.2.2 bouyer * 482 1.3.2.2 bouyer * RETURN: None 483 1.3.2.2 bouyer * 484 1.3.2.2 bouyer * DESCRIPTION: Validate various important fields within the FADT. If a problem 485 1.3.2.2 bouyer * is found, issue a message, but no status is returned. 486 1.3.2.2 bouyer * Used by both the table manager and the disassembler. 487 1.3.2.2 bouyer * 488 1.3.2.2 bouyer * Possible additional checks: 489 1.3.2.2 bouyer * (AcpiGbl_FADT.Pm1EventLength >= 4) 490 1.3.2.2 bouyer * (AcpiGbl_FADT.Pm1ControlLength >= 2) 491 1.3.2.2 bouyer * (AcpiGbl_FADT.PmTimerLength >= 4) 492 1.3.2.2 bouyer * Gpe block lengths must be multiple of 2 493 1.3.2.2 bouyer * 494 1.3.2.2 bouyer ******************************************************************************/ 495 1.3.2.2 bouyer 496 1.3.2.2 bouyer static void 497 1.3.2.2 bouyer AcpiTbValidateFadt ( 498 1.3.2.2 bouyer void) 499 1.3.2.2 bouyer { 500 1.3.2.2 bouyer const char *Name; 501 1.3.2.2 bouyer ACPI_GENERIC_ADDRESS *Address64; 502 1.3.2.2 bouyer UINT8 Length; 503 1.3.2.2 bouyer UINT32 i; 504 1.3.2.2 bouyer 505 1.3.2.2 bouyer 506 1.3.2.2 bouyer /* 507 1.3.2.2 bouyer * Check for FACS and DSDT address mismatches. An address mismatch between 508 1.3.2.2 bouyer * the 32-bit and 64-bit address fields (FIRMWARE_CTRL/X_FIRMWARE_CTRL and 509 1.3.2.2 bouyer * DSDT/X_DSDT) would indicate the presence of two FACS or two DSDT tables. 510 1.3.2.2 bouyer */ 511 1.3.2.2 bouyer if (AcpiGbl_FADT.Facs && 512 1.3.2.2 bouyer (AcpiGbl_FADT.XFacs != (UINT64) AcpiGbl_FADT.Facs)) 513 1.3.2.2 bouyer { 514 1.3.2.2 bouyer ACPI_WARNING ((AE_INFO, 515 1.3.2.2 bouyer "32/64X FACS address mismatch in FADT - " 516 1.3.2.2 bouyer "0x%8.8X/0x%8.8X%8.8X, using 32", 517 1.3.2.2 bouyer AcpiGbl_FADT.Facs, ACPI_FORMAT_UINT64 (AcpiGbl_FADT.XFacs))); 518 1.3.2.2 bouyer 519 1.3.2.2 bouyer AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs; 520 1.3.2.2 bouyer } 521 1.3.2.2 bouyer 522 1.3.2.2 bouyer if (AcpiGbl_FADT.Dsdt && 523 1.3.2.2 bouyer (AcpiGbl_FADT.XDsdt != (UINT64) AcpiGbl_FADT.Dsdt)) 524 1.3.2.2 bouyer { 525 1.3.2.2 bouyer ACPI_WARNING ((AE_INFO, 526 1.3.2.2 bouyer "32/64X DSDT address mismatch in FADT - " 527 1.3.2.2 bouyer "0x%8.8X/0x%8.8X%8.8X, using 32", 528 1.3.2.2 bouyer AcpiGbl_FADT.Dsdt, ACPI_FORMAT_UINT64 (AcpiGbl_FADT.XDsdt))); 529 1.3.2.2 bouyer 530 1.3.2.2 bouyer AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt; 531 1.3.2.2 bouyer } 532 1.3.2.2 bouyer 533 1.3.2.2 bouyer /* Examine all of the 64-bit extended address fields (X fields) */ 534 1.3.2.2 bouyer 535 1.3.2.2 bouyer for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) 536 1.3.2.2 bouyer { 537 1.3.2.2 bouyer /* 538 1.3.2.2 bouyer * Generate pointer to the 64-bit address, get the register 539 1.3.2.2 bouyer * length (width) and the register name 540 1.3.2.2 bouyer */ 541 1.3.2.2 bouyer Address64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS, 542 1.3.2.2 bouyer &AcpiGbl_FADT, FadtInfoTable[i].Address64); 543 1.3.2.2 bouyer Length = *ACPI_ADD_PTR (UINT8, 544 1.3.2.2 bouyer &AcpiGbl_FADT, FadtInfoTable[i].Length); 545 1.3.2.2 bouyer Name = FadtInfoTable[i].Name; 546 1.3.2.2 bouyer 547 1.3.2.2 bouyer /* 548 1.3.2.2 bouyer * For each extended field, check for length mismatch between the 549 1.3.2.2 bouyer * legacy length field and the corresponding 64-bit X length field. 550 1.3.2.2 bouyer */ 551 1.3.2.2 bouyer if (Address64->Address && 552 1.3.2.2 bouyer (Address64->BitWidth != ACPI_MUL_8 (Length))) 553 1.3.2.2 bouyer { 554 1.3.2.2 bouyer ACPI_WARNING ((AE_INFO, 555 1.3.2.2 bouyer "32/64X length mismatch in %s: %u/%u", 556 1.3.2.2 bouyer Name, ACPI_MUL_8 (Length), Address64->BitWidth)); 557 1.3.2.2 bouyer } 558 1.3.2.2 bouyer 559 1.3.2.2 bouyer if (FadtInfoTable[i].Type & ACPI_FADT_REQUIRED) 560 1.3.2.2 bouyer { 561 1.3.2.2 bouyer /* 562 1.3.2.2 bouyer * Field is required (PM1aEvent, PM1aControl, PmTimer). 563 1.3.2.2 bouyer * Both the address and length must be non-zero. 564 1.3.2.2 bouyer */ 565 1.3.2.2 bouyer if (!Address64->Address || !Length) 566 1.3.2.2 bouyer { 567 1.3.2.2 bouyer ACPI_ERROR ((AE_INFO, 568 1.3.2.2 bouyer "Required field %s has zero address and/or length:" 569 1.3.2.2 bouyer " 0x%8.8X%8.8X/0x%X", 570 1.3.2.2 bouyer Name, ACPI_FORMAT_UINT64 (Address64->Address), Length)); 571 1.3.2.2 bouyer } 572 1.3.2.2 bouyer } 573 1.3.2.2 bouyer else if (FadtInfoTable[i].Type & ACPI_FADT_SEPARATE_LENGTH) 574 1.3.2.2 bouyer { 575 1.3.2.2 bouyer /* 576 1.3.2.2 bouyer * Field is optional (PM2Control, GPE0, GPE1) AND has its own 577 1.3.2.2 bouyer * length field. If present, both the address and length must 578 1.3.2.2 bouyer * be valid. 579 1.3.2.2 bouyer */ 580 1.3.2.2 bouyer if ((Address64->Address && !Length) || 581 1.3.2.2 bouyer (!Address64->Address && Length)) 582 1.3.2.2 bouyer { 583 1.3.2.2 bouyer ACPI_WARNING ((AE_INFO, 584 1.3.2.2 bouyer "Optional field %s has zero address or length: " 585 1.3.2.2 bouyer "0x%8.8X%8.8X/0x%X", 586 1.3.2.2 bouyer Name, ACPI_FORMAT_UINT64 (Address64->Address), Length)); 587 1.3.2.2 bouyer } 588 1.3.2.2 bouyer } 589 1.3.2.2 bouyer } 590 1.3.2.2 bouyer } 591 1.3.2.2 bouyer 592 1.3.2.2 bouyer 593 1.3.2.2 bouyer /******************************************************************************* 594 1.3.2.2 bouyer * 595 1.3.2.2 bouyer * FUNCTION: AcpiTbSetupFadtRegisters 596 1.3.2.2 bouyer * 597 1.3.2.2 bouyer * PARAMETERS: None, uses AcpiGbl_FADT. 598 1.3.2.2 bouyer * 599 1.3.2.2 bouyer * RETURN: None 600 1.3.2.2 bouyer * 601 1.3.2.2 bouyer * DESCRIPTION: Initialize global ACPI PM1 register definitions. Optionally, 602 1.3.2.2 bouyer * force FADT register definitions to their default lengths. 603 1.3.2.2 bouyer * 604 1.3.2.2 bouyer ******************************************************************************/ 605 1.3.2.2 bouyer 606 1.3.2.2 bouyer static void 607 1.3.2.2 bouyer AcpiTbSetupFadtRegisters ( 608 1.3.2.2 bouyer void) 609 1.3.2.2 bouyer { 610 1.3.2.2 bouyer ACPI_GENERIC_ADDRESS *Target64; 611 1.3.2.2 bouyer ACPI_GENERIC_ADDRESS *Source64; 612 1.3.2.2 bouyer UINT8 Pm1RegisterByteWidth; 613 1.3.2.2 bouyer UINT32 i; 614 1.3.2.2 bouyer 615 1.3.2.2 bouyer 616 1.3.2.2 bouyer /* 617 1.3.2.2 bouyer * Optionally check all register lengths against the default values and 618 1.3.2.2 bouyer * update them if they are incorrect. 619 1.3.2.2 bouyer */ 620 1.3.2.2 bouyer if (AcpiGbl_UseDefaultRegisterWidths) 621 1.3.2.2 bouyer { 622 1.3.2.2 bouyer for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) 623 1.3.2.2 bouyer { 624 1.3.2.2 bouyer Target64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS, &AcpiGbl_FADT, 625 1.3.2.2 bouyer FadtInfoTable[i].Address64); 626 1.3.2.2 bouyer 627 1.3.2.2 bouyer /* 628 1.3.2.2 bouyer * If a valid register (Address != 0) and the (DefaultLength > 0) 629 1.3.2.2 bouyer * (Not a GPE register), then check the width against the default. 630 1.3.2.2 bouyer */ 631 1.3.2.2 bouyer if ((Target64->Address) && 632 1.3.2.2 bouyer (FadtInfoTable[i].DefaultLength > 0) && 633 1.3.2.2 bouyer (FadtInfoTable[i].DefaultLength != Target64->BitWidth)) 634 1.3.2.2 bouyer { 635 1.3.2.2 bouyer ACPI_WARNING ((AE_INFO, 636 1.3.2.2 bouyer "Invalid length for %s: %u, using default %u", 637 1.3.2.2 bouyer FadtInfoTable[i].Name, Target64->BitWidth, 638 1.3.2.2 bouyer FadtInfoTable[i].DefaultLength)); 639 1.3.2.2 bouyer 640 1.3.2.2 bouyer /* Incorrect size, set width to the default */ 641 1.3.2.2 bouyer 642 1.3.2.2 bouyer Target64->BitWidth = FadtInfoTable[i].DefaultLength; 643 1.3.2.2 bouyer } 644 1.3.2.2 bouyer } 645 1.3.2.2 bouyer } 646 1.3.2.2 bouyer 647 1.3.2.2 bouyer /* 648 1.3.2.2 bouyer * Get the length of the individual PM1 registers (enable and status). 649 1.3.2.2 bouyer * Each register is defined to be (event block length / 2). Extra divide 650 1.3.2.2 bouyer * by 8 converts bits to bytes. 651 1.3.2.2 bouyer */ 652 1.3.2.2 bouyer Pm1RegisterByteWidth = (UINT8) 653 1.3.2.2 bouyer ACPI_DIV_16 (AcpiGbl_FADT.XPm1aEventBlock.BitWidth); 654 1.3.2.2 bouyer 655 1.3.2.2 bouyer /* 656 1.3.2.2 bouyer * Calculate separate GAS structs for the PM1x (A/B) Status and Enable 657 1.3.2.2 bouyer * registers. These addresses do not appear (directly) in the FADT, so it 658 1.3.2.2 bouyer * is useful to pre-calculate them from the PM1 Event Block definitions. 659 1.3.2.2 bouyer * 660 1.3.2.2 bouyer * The PM event blocks are split into two register blocks, first is the 661 1.3.2.2 bouyer * PM Status Register block, followed immediately by the PM Enable 662 1.3.2.2 bouyer * Register block. Each is of length (Pm1EventLength/2) 663 1.3.2.2 bouyer * 664 1.3.2.2 bouyer * Note: The PM1A event block is required by the ACPI specification. 665 1.3.2.2 bouyer * However, the PM1B event block is optional and is rarely, if ever, 666 1.3.2.2 bouyer * used. 667 1.3.2.2 bouyer */ 668 1.3.2.2 bouyer 669 1.3.2.2 bouyer for (i = 0; i < ACPI_FADT_PM_INFO_ENTRIES; i++) 670 1.3.2.2 bouyer { 671 1.3.2.2 bouyer Source64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS, &AcpiGbl_FADT, 672 1.3.2.2 bouyer FadtPmInfoTable[i].Source); 673 1.3.2.2 bouyer 674 1.3.2.2 bouyer if (Source64->Address) 675 1.3.2.2 bouyer { 676 1.3.2.2 bouyer AcpiTbInitGenericAddress (FadtPmInfoTable[i].Target, 677 1.3.2.2 bouyer Source64->SpaceId, Pm1RegisterByteWidth, 678 1.3.2.2 bouyer Source64->Address + 679 1.3.2.2 bouyer (FadtPmInfoTable[i].RegisterNum * Pm1RegisterByteWidth)); 680 1.3.2.2 bouyer } 681 1.3.2.2 bouyer } 682 1.3.2.2 bouyer } 683 1.3.2.2 bouyer 684
Indexes created Fri Oct 17 23:09:53 GMT 2025