include/acpi/acpi_table.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Helpers for ACPI table generation
   4  *
   5  * Based on acpi.c from coreboot
   6  *
   7  * Copyright 2019 Google LLC
   8  *
   9  * Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com>
  10  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
  11  */
  12
  13 #ifndef __ACPI_TABLE_H__
  14 #define __ACPI_TABLE_H__
  15
  16 #include <linux/bitops.h>
  17
  18 #define RSDP_SIG                "RSD PTR "      /* RSDP pointer signature */
  19 #define OEM_ID                  "U-BOOT"        /* U-Boot */
  20 #define OEM_TABLE_ID            "U-BOOTBL"      /* U-Boot Table */
  21 #define ASLC_ID                 "INTL"          /* Intel ASL Compiler */
  22
  23 /* TODO(sjg@chromium.org): Figure out how to get compiler revision */
  24 #define ASL_REVISION    0
  25
  26 #define ACPI_RSDP_REV_ACPI_1_0  0
  27 #define ACPI_RSDP_REV_ACPI_2_0  2
  28
  29 #if !defined(__ACPI__)
  30
  31 struct acpi_ctx;
  32
  33 /*
  34  * RSDP (Root System Description Pointer)
  35  * Note: ACPI 1.0 didn't have length, xsdt_address, and ext_checksum
  36  */
  37 struct acpi_rsdp {
  38         char signature[8];      /* RSDP signature */
  39         u8 checksum;            /* Checksum of the first 20 bytes */
  40         char oem_id[6];         /* OEM ID */
  41         u8 revision;            /* 0 for ACPI 1.0, others 2 */
  42         u32 rsdt_address;       /* Physical address of RSDT (32 bits) */
  43         u32 length;             /* Total RSDP length (incl. extended part) */
  44         u64 xsdt_address;       /* Physical address of XSDT (64 bits) */
  45         u8 ext_checksum;        /* Checksum of the whole table */
  46         u8 reserved[3];
  47 };
  48
  49 /* Generic ACPI header, provided by (almost) all tables */
  50 struct __packed acpi_table_header {
  51         char signature[4];      /* ACPI signature (4 ASCII characters) */
  52         u32 length;             /* Table length in bytes (incl. header) */
  53         u8 revision;            /* Table version (not ACPI version!) */
  54         volatile u8 checksum;   /* To make sum of entire table == 0 */
  55         char oem_id[6];         /* OEM identification */
  56         char oem_table_id[8];   /* OEM table identification */
  57         u32 oem_revision;       /* OEM revision number */
  58         char aslc_id[4];        /* ASL compiler vendor ID */
  59         u32 aslc_revision;      /* ASL compiler revision number */
  60 };
  61
  62 struct acpi_gen_regaddr {
  63         u8 space_id;    /* Address space ID */
  64         u8 bit_width;   /* Register size in bits */
  65         u8 bit_offset;  /* Register bit offset */
  66         u8 access_size; /* Access size */
  67         u32 addrl;      /* Register address, low 32 bits */
  68         u32 addrh;      /* Register address, high 32 bits */
  69 };
  70
  71 /* A maximum number of 32 ACPI tables ought to be enough for now */
  72 #define MAX_ACPI_TABLES         32
  73
  74 /* RSDT (Root System Description Table) */
  75 struct acpi_rsdt {
  76         struct acpi_table_header header;
  77         u32 entry[MAX_ACPI_TABLES];
  78 };
  79
  80 /* XSDT (Extended System Description Table) */
  81 struct acpi_xsdt {
  82         struct acpi_table_header header;
  83         u64 entry[MAX_ACPI_TABLES];
  84 };
  85
  86 /* HPET timers */
  87 struct __packed acpi_hpet {
  88         struct acpi_table_header header;
  89         u32 id;
  90         struct acpi_gen_regaddr addr;
  91         u8 number;
  92         u16 min_tick;
  93         u8 attributes;
  94 };
  95
  96 struct __packed acpi_tpm2 {
  97         struct acpi_table_header header;
  98         u16 platform_class;
  99         u8  reserved[2];
 100         u64 control_area;
 101         u32 start_method;
 102         u8  msp[12];
 103         u32 laml;
 104         u64 lasa;
 105 };
 106
 107 /* FADT Preferred Power Management Profile */
 108 enum acpi_pm_profile {
 109         ACPI_PM_UNSPECIFIED = 0,
 110         ACPI_PM_DESKTOP,
 111         ACPI_PM_MOBILE,
 112         ACPI_PM_WORKSTATION,
 113         ACPI_PM_ENTERPRISE_SERVER,
 114         ACPI_PM_SOHO_SERVER,
 115         ACPI_PM_APPLIANCE_PC,
 116         ACPI_PM_PERFORMANCE_SERVER,
 117         ACPI_PM_TABLET
 118 };
 119
 120 /* FADT flags for p_lvl2_lat and p_lvl3_lat */
 121 #define ACPI_FADT_C2_NOT_SUPPORTED      101
 122 #define ACPI_FADT_C3_NOT_SUPPORTED      1001
 123
 124 /* FADT Boot Architecture Flags */
 125 #define ACPI_FADT_LEGACY_FREE           0x00
 126 #define ACPI_FADT_LEGACY_DEVICES        BIT(0)
 127 #define ACPI_FADT_8042                  BIT(1)
 128 #define ACPI_FADT_VGA_NOT_PRESENT       BIT(2)
 129 #define ACPI_FADT_MSI_NOT_SUPPORTED     BIT(3)
 130 #define ACPI_FADT_NO_PCIE_ASPM_CONTROL  BIT(4)
 131
 132 /* FADT Feature Flags */
 133 #define ACPI_FADT_WBINVD                BIT(0)
 134 #define ACPI_FADT_WBINVD_FLUSH          BIT(1)
 135 #define ACPI_FADT_C1_SUPPORTED          BIT(2)
 136 #define ACPI_FADT_C2_MP_SUPPORTED       BIT(3)
 137 #define ACPI_FADT_POWER_BUTTON          BIT(4)
 138 #define ACPI_FADT_SLEEP_BUTTON          BIT(5)
 139 #define ACPI_FADT_FIXED_RTC             BIT(6)
 140 #define ACPI_FADT_S4_RTC_WAKE           BIT(7)
 141 #define ACPI_FADT_32BIT_TIMER           BIT(8)
 142 #define ACPI_FADT_DOCKING_SUPPORTED     BIT(9)
 143 #define ACPI_FADT_RESET_REGISTER        BIT(10)
 144 #define ACPI_FADT_SEALED_CASE           BIT(11)
 145 #define ACPI_FADT_HEADLESS              BIT(12)
 146 #define ACPI_FADT_SLEEP_TYPE            BIT(13)
 147 #define ACPI_FADT_PCI_EXPRESS_WAKE      BIT(14)
 148 #define ACPI_FADT_PLATFORM_CLOCK        BIT(15)
 149 #define ACPI_FADT_S4_RTC_VALID          BIT(16)
 150 #define ACPI_FADT_REMOTE_POWER_ON       BIT(17)
 151 #define ACPI_FADT_APIC_CLUSTER          BIT(18)
 152 #define ACPI_FADT_APIC_PHYSICAL         BIT(19)
 153 #define ACPI_FADT_HW_REDUCED_ACPI       BIT(20)
 154 #define ACPI_FADT_LOW_PWR_IDLE_S0       BIT(21)
 155
 156 enum acpi_address_space_type {
 157         ACPI_ADDRESS_SPACE_MEMORY = 0,  /* System memory */
 158         ACPI_ADDRESS_SPACE_IO,          /* System I/O */
 159         ACPI_ADDRESS_SPACE_PCI,         /* PCI config space */
 160         ACPI_ADDRESS_SPACE_EC,          /* Embedded controller */
 161         ACPI_ADDRESS_SPACE_SMBUS,       /* SMBus */
 162         ACPI_ADDRESS_SPACE_PCC = 0x0a,  /* Platform Comm. Channel */
 163         ACPI_ADDRESS_SPACE_FIXED = 0x7f /* Functional fixed hardware */
 164 };
 165
 166 enum acpi_address_space_size {
 167         ACPI_ACCESS_SIZE_UNDEFINED = 0,
 168         ACPI_ACCESS_SIZE_BYTE_ACCESS,
 169         ACPI_ACCESS_SIZE_WORD_ACCESS,
 170         ACPI_ACCESS_SIZE_DWORD_ACCESS,
 171         ACPI_ACCESS_SIZE_QWORD_ACCESS
 172 };
 173
 174 /* FADT (Fixed ACPI Description Table) */
 175 struct __packed acpi_fadt {
 176         struct acpi_table_header header;
 177         u32 firmware_ctrl;
 178         u32 dsdt;
 179         u8 res1;
 180         u8 preferred_pm_profile;
 181         u16 sci_int;
 182         u32 smi_cmd;
 183         u8 acpi_enable;
 184         u8 acpi_disable;
 185         u8 s4bios_req;
 186         u8 pstate_cnt;
 187         u32 pm1a_evt_blk;
 188         u32 pm1b_evt_blk;
 189         u32 pm1a_cnt_blk;
 190         u32 pm1b_cnt_blk;
 191         u32 pm2_cnt_blk;
 192         u32 pm_tmr_blk;
 193         u32 gpe0_blk;
 194         u32 gpe1_blk;
 195         u8 pm1_evt_len;
 196         u8 pm1_cnt_len;
 197         u8 pm2_cnt_len;
 198         u8 pm_tmr_len;
 199         u8 gpe0_blk_len;
 200         u8 gpe1_blk_len;
 201         u8 gpe1_base;
 202         u8 cst_cnt;
 203         u16 p_lvl2_lat;
 204         u16 p_lvl3_lat;
 205         u16 flush_size;
 206         u16 flush_stride;
 207         u8 duty_offset;
 208         u8 duty_width;
 209         u8 day_alrm;
 210         u8 mon_alrm;
 211         u8 century;
 212         u16 iapc_boot_arch;
 213         u8 res2;
 214         u32 flags;
 215         struct acpi_gen_regaddr reset_reg;
 216         u8 reset_value;
 217         u16 arm_boot_arch;
 218         u8 minor_revision;
 219         u32 x_firmware_ctl_l;
 220         u32 x_firmware_ctl_h;
 221         u32 x_dsdt_l;
 222         u32 x_dsdt_h;
 223         struct acpi_gen_regaddr x_pm1a_evt_blk;
 224         struct acpi_gen_regaddr x_pm1b_evt_blk;
 225         struct acpi_gen_regaddr x_pm1a_cnt_blk;
 226         struct acpi_gen_regaddr x_pm1b_cnt_blk;
 227         struct acpi_gen_regaddr x_pm2_cnt_blk;
 228         struct acpi_gen_regaddr x_pm_tmr_blk;
 229         struct acpi_gen_regaddr x_gpe0_blk;
 230         struct acpi_gen_regaddr x_gpe1_blk;
 231 };
 232
 233 /* FADT TABLE Revision values - note these do not match the ACPI revision */
 234 #define ACPI_FADT_REV_ACPI_1_0          1
 235 #define ACPI_FADT_REV_ACPI_2_0          3
 236 #define ACPI_FADT_REV_ACPI_3_0          4
 237 #define ACPI_FADT_REV_ACPI_4_0          4
 238 #define ACPI_FADT_REV_ACPI_5_0          5
 239 #define ACPI_FADT_REV_ACPI_6_0          6
 240
 241 /* MADT TABLE Revision values - note these do not match the ACPI revision */
 242 #define ACPI_MADT_REV_ACPI_3_0          2
 243 #define ACPI_MADT_REV_ACPI_4_0          3
 244 #define ACPI_MADT_REV_ACPI_5_0          3
 245 #define ACPI_MADT_REV_ACPI_6_0          5
 246
 247 #define ACPI_MCFG_REV_ACPI_3_0          1
 248
 249 /* IVRS Revision Field */
 250 #define IVRS_FORMAT_FIXED       0x01    /* Type 10h & 11h only */
 251 #define IVRS_FORMAT_MIXED       0x02    /* Type 10h, 11h, & 40h */
 252
 253 /* FACS flags */
 254 #define ACPI_FACS_S4BIOS_F              BIT(0)
 255 #define ACPI_FACS_64BIT_WAKE_F          BIT(1)
 256
 257 /* FACS (Firmware ACPI Control Structure) */
 258 struct acpi_facs {
 259         char signature[4];              /* "FACS" */
 260         u32 length;                     /* Length in bytes (>= 64) */
 261         u32 hardware_signature;         /* Hardware signature */
 262         u32 firmware_waking_vector;     /* Firmware waking vector */
 263         u32 global_lock;                /* Global lock */
 264         u32 flags;                      /* FACS flags */
 265         u32 x_firmware_waking_vector_l; /* X FW waking vector, low */
 266         u32 x_firmware_waking_vector_h; /* X FW waking vector, high */
 267         u8 version;                     /* Version 2 */
 268         u8 res1[3];
 269         u32 ospm_flags;                 /* OSPM enabled flags */
 270         u8 res2[24];
 271 };
 272
 273 /* MADT flags */
 274 #define ACPI_MADT_PCAT_COMPAT   BIT(0)
 275
 276 /* MADT (Multiple APIC Description Table) */
 277 struct acpi_madt {
 278         struct acpi_table_header header;
 279         u32 lapic_addr;                 /* Local APIC address */
 280         u32 flags;                      /* Multiple APIC flags */
 281 };
 282
 283 /* MADT: APIC Structure Type*/
 284 enum acpi_apic_types {
 285         ACPI_APIC_LAPIC = 0,            /* Processor local APIC */
 286         ACPI_APIC_IOAPIC,               /* I/O APIC */
 287         ACPI_APIC_IRQ_SRC_OVERRIDE,     /* Interrupt source override */
 288         ACPI_APIC_NMI_SRC,              /* NMI source */
 289         ACPI_APIC_LAPIC_NMI,            /* Local APIC NMI */
 290         ACPI_APIC_LAPIC_ADDR_OVERRIDE,  /* Local APIC address override */
 291         ACPI_APIC_IOSAPIC,              /* I/O SAPIC */
 292         ACPI_APIC_LSAPIC,               /* Local SAPIC */
 293         ACPI_APIC_PLATFORM_IRQ_SRC,     /* Platform interrupt sources */
 294         ACPI_APIC_LX2APIC,              /* Processor local x2APIC */
 295         ACPI_APIC_LX2APIC_NMI,          /* Local x2APIC NMI */
 296 };
 297
 298 /* MADT: Processor Local APIC Structure */
 299
 300 #define LOCAL_APIC_FLAG_ENABLED         BIT(0)
 301
 302 struct acpi_madt_lapic {
 303         u8 type;                /* Type (0) */
 304         u8 length;              /* Length in bytes (8) */
 305         u8 processor_id;        /* ACPI processor ID */
 306         u8 apic_id;             /* Local APIC ID */
 307         u32 flags;              /* Local APIC flags */
 308 };
 309
 310 /* MADT: I/O APIC Structure */
 311 struct acpi_madt_ioapic {
 312         u8 type;                /* Type (1) */
 313         u8 length;              /* Length in bytes (12) */
 314         u8 ioapic_id;           /* I/O APIC ID */
 315         u8 reserved;
 316         u32 ioapic_addr;        /* I/O APIC address */
 317         u32 gsi_base;           /* Global system interrupt base */
 318 };
 319
 320 /* MADT: Interrupt Source Override Structure */
 321 struct __packed acpi_madt_irqoverride {
 322         u8 type;                /* Type (2) */
 323         u8 length;              /* Length in bytes (10) */
 324         u8 bus;                 /* ISA (0) */
 325         u8 source;              /* Bus-relative int. source (IRQ) */
 326         u32 gsirq;              /* Global system interrupt */
 327         u16 flags;              /* MPS INTI flags */
 328 };
 329
 330 /* MADT: Local APIC NMI Structure */
 331 struct __packed acpi_madt_lapic_nmi {
 332         u8 type;                /* Type (4) */
 333         u8 length;              /* Length in bytes (6) */
 334         u8 processor_id;        /* ACPI processor ID */
 335         u16 flags;              /* MPS INTI flags */
 336         u8 lint;                /* Local APIC LINT# */
 337 };
 338
 339 /* MCFG (PCI Express MMIO config space BAR description table) */
 340 struct acpi_mcfg {
 341         struct acpi_table_header header;
 342         u8 reserved[8];
 343 };
 344
 345 struct acpi_mcfg_mmconfig {
 346         u32 base_address_l;
 347         u32 base_address_h;
 348         u16 pci_segment_group_number;
 349         u8 start_bus_number;
 350         u8 end_bus_number;
 351         u8 reserved[4];
 352 };
 353
 354 /* PM1_CNT bit defines */
 355 #define PM1_CNT_SCI_EN          BIT(0)
 356
 357 /* ACPI global NVS structure */
 358 struct acpi_global_nvs;
 359
 360 /* CSRT (Core System Resource Table) */
 361 struct acpi_csrt {
 362         struct acpi_table_header header;
 363 };
 364
 365 struct acpi_csrt_group {
 366         u32 length;
 367         u32 vendor_id;
 368         u32 subvendor_id;
 369         u16 device_id;
 370         u16 subdevice_id;
 371         u16 revision;
 372         u16 reserved;
 373         u32 shared_info_length;
 374 };
 375
 376 struct acpi_csrt_shared_info {
 377         u16 major_version;
 378         u16 minor_version;
 379         u32 mmio_base_low;
 380         u32 mmio_base_high;
 381         u32 gsi_interrupt;
 382         u8 interrupt_polarity;
 383         u8 interrupt_mode;
 384         u8 num_channels;
 385         u8 dma_address_width;
 386         u16 base_request_line;
 387         u16 num_handshake_signals;
 388         u32 max_block_size;
 389 };
 390
 391 /* Port types for ACPI _UPC object */
 392 enum acpi_upc_type {
 393         UPC_TYPE_A,
 394         UPC_TYPE_MINI_AB,
 395         UPC_TYPE_EXPRESSCARD,
 396         UPC_TYPE_USB3_A,
 397         UPC_TYPE_USB3_B,
 398         UPC_TYPE_USB3_MICRO_B,
 399         UPC_TYPE_USB3_MICRO_AB,
 400         UPC_TYPE_USB3_POWER_B,
 401         UPC_TYPE_C_USB2_ONLY,
 402         UPC_TYPE_C_USB2_SS_SWITCH,
 403         UPC_TYPE_C_USB2_SS,
 404         UPC_TYPE_PROPRIETARY = 0xff,
 405         /*
 406          * The following types are not directly defined in the ACPI
 407          * spec but are used by coreboot to identify a USB device type.
 408          */
 409         UPC_TYPE_INTERNAL = 0xff,
 410         UPC_TYPE_UNUSED,
 411         UPC_TYPE_HUB
 412 };
 413
 414 enum dev_scope_type {
 415         SCOPE_PCI_ENDPOINT = 1,
 416         SCOPE_PCI_SUB = 2,
 417         SCOPE_IOAPIC = 3,
 418         SCOPE_MSI_HPET = 4,
 419         SCOPE_ACPI_NAMESPACE_DEVICE = 5
 420 };
 421
 422 struct __packed dev_scope {
 423         u8 type;
 424         u8 length;
 425         u8 reserved[2];
 426         u8 enumeration;
 427         u8 start_bus;
 428         struct {
 429                 u8 dev;
 430                 u8 fn;
 431         } __packed path[0];
 432 };
 433
 434 enum dmar_type {
 435         DMAR_DRHD = 0,
 436         DMAR_RMRR = 1,
 437         DMAR_ATSR = 2,
 438         DMAR_RHSA = 3,
 439         DMAR_ANDD = 4
 440 };
 441
 442 enum {
 443         DRHD_INCLUDE_PCI_ALL = BIT(0)
 444 };
 445
 446 enum dmar_flags {
 447         DMAR_INTR_REMAP                 = BIT(0),
 448         DMAR_X2APIC_OPT_OUT             = BIT(1),
 449         DMAR_CTRL_PLATFORM_OPT_IN_FLAG  = BIT(2),
 450 };
 451
 452 struct dmar_entry {
 453         u16 type;
 454         u16 length;
 455         u8 flags;
 456         u8 reserved;
 457         u16 segment;
 458         u64 bar;
 459 };
 460
 461 struct dmar_rmrr_entry {
 462         u16 type;
 463         u16 length;
 464         u16 reserved;
 465         u16 segment;
 466         u64 bar;
 467         u64 limit;
 468 };
 469
 470 /* DMAR (DMA Remapping Reporting Structure) */
 471 struct __packed acpi_dmar {
 472         struct acpi_table_header header;
 473         u8 host_address_width;
 474         u8 flags;
 475         u8 reserved[10];
 476         struct dmar_entry structure[0];
 477 };
 478
 479 /* DBG2 definitions are partially used for SPCR interface_type */
 480
 481 /* Types for port_type field */
 482
 483 #define ACPI_DBG2_SERIAL_PORT           0x8000
 484 #define ACPI_DBG2_1394_PORT             0x8001
 485 #define ACPI_DBG2_USB_PORT              0x8002
 486 #define ACPI_DBG2_NET_PORT              0x8003
 487
 488 /* Subtypes for port_subtype field */
 489
 490 #define ACPI_DBG2_16550_COMPATIBLE      0x0000
 491 #define ACPI_DBG2_16550_SUBSET          0x0001
 492 #define ACPI_DBG2_ARM_PL011             0x0003
 493 #define ACPI_DBG2_ARM_SBSA_32BIT        0x000D
 494 #define ACPI_DBG2_ARM_SBSA_GENERIC      0x000E
 495 #define ACPI_DBG2_ARM_DCC               0x000F
 496 #define ACPI_DBG2_BCM2835               0x0010
 497
 498 #define ACPI_DBG2_1394_STANDARD         0x0000
 499
 500 #define ACPI_DBG2_USB_XHCI              0x0000
 501 #define ACPI_DBG2_USB_EHCI              0x0001
 502
 503 #define ACPI_DBG2_UNKNOWN               0x00FF
 504
 505 /* DBG2: Microsoft Debug Port Table 2 header */
 506 struct __packed acpi_dbg2_header {
 507         struct acpi_table_header header;
 508         u32 devices_offset;
 509         u32 devices_count;
 510 };
 511
 512 /* DBG2: Microsoft Debug Port Table 2 device entry */
 513 struct __packed acpi_dbg2_device {
 514         u8  revision;
 515         u16 length;
 516         u8 address_count;
 517         u16 namespace_string_length;
 518         u16 namespace_string_offset;
 519         u16 oem_data_length;
 520         u16 oem_data_offset;
 521         u16 port_type;
 522         u16 port_subtype;
 523         u8  reserved[2];
 524         u16 base_address_offset;
 525         u16 address_size_offset;
 526 };
 527
 528 /* SPCR (Serial Port Console Redirection table) */
 529 struct __packed acpi_spcr {
 530         struct acpi_table_header header;
 531         u8 interface_type;
 532         u8 reserved[3];
 533         struct acpi_gen_regaddr serial_port;
 534         u8 interrupt_type;
 535         u8 pc_interrupt;
 536         u32 interrupt;          /* Global system interrupt */
 537         u8 baud_rate;
 538         u8 parity;
 539         u8 stop_bits;
 540         u8 flow_control;
 541         u8 terminal_type;
 542         u8 reserved1;
 543         u16 pci_device_id;      /* Must be 0xffff if not PCI device */
 544         u16 pci_vendor_id;      /* Must be 0xffff if not PCI device */
 545         u8 pci_bus;
 546         u8 pci_device;
 547         u8 pci_function;
 548         u32 pci_flags;
 549         u8 pci_segment;
 550         u32 reserved2;
 551 };
 552
 553 /* Tables defined/reserved by ACPI and generated by U-Boot */
 554 enum acpi_tables {
 555         ACPITAB_BERT,
 556         ACPITAB_DBG2,
 557         ACPITAB_DMAR,
 558         ACPITAB_DSDT,
 559         ACPITAB_ECDT,
 560         ACPITAB_FACS,
 561         ACPITAB_FADT,
 562         ACPITAB_HEST,
 563         ACPITAB_HPET,
 564         ACPITAB_IVRS,
 565         ACPITAB_MADT,
 566         ACPITAB_MCFG,
 567         ACPITAB_NHLT,
 568         ACPITAB_RSDP,
 569         ACPITAB_RSDT,
 570         ACPITAB_SLIT,
 571         ACPITAB_SPCR,
 572         ACPITAB_SPMI,
 573         ACPITAB_SRAT,
 574         ACPITAB_SSDT,
 575         ACPITAB_TCPA,
 576         ACPITAB_TPM2,
 577         ACPITAB_VFCT,
 578         ACPITAB_XSDT,
 579
 580         ACPITAB_COUNT,
 581 };
 582
 583 /**
 584  * acpi_get_table_revision() - Get the revision number generated for a table
 585  *
 586  * This keeps the version-number information in one place
 587  *
 588  * @table: ACPI table to check
 589  * @return version number that U-Boot generates
 590  */
 591 int acpi_get_table_revision(enum acpi_tables table);
 592
 593 /**
 594  * acpi_create_dmar() - Create a DMA Remapping Reporting (DMAR) table
 595  *
 596  * @dmar: Place to put the table
 597  * @flags: DMAR flags to use
 598  * @return 0 if OK, -ve on error
 599  */
 600 int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags);
 601
 602 /**
 603  * acpi_create_dbg2() - Create a DBG2 table
 604  *
 605  * This table describes how to access the debug UART
 606  *
 607  * @dbg2: Place to put information
 608  * @port_type: Serial port type (see ACPI_DBG2_...)
 609  * @port_subtype: Serial port sub-type (see ACPI_DBG2_...)
 610  * @address: ACPI address of port
 611  * @address_size: Size of address space
 612  * @device_path: Path of device (created using acpi_device_path())
 613  */
 614 void acpi_create_dbg2(struct acpi_dbg2_header *dbg2,
 615                       int port_type, int port_subtype,
 616                       struct acpi_gen_regaddr *address, uint32_t address_size,
 617                       const char *device_path);
 618
 619 /**
 620  * acpi_fill_header() - Set up a new table header
 621  *
 622  * This sets all fields except length, revision, checksum and aslc_revision
 623  *
 624  * @header: ACPI header to update
 625  * @signature: Table signature to use (4 characters)
 626  */
 627 void acpi_fill_header(struct acpi_table_header *header, char *signature);
 628
 629 /**
 630  * acpi_align() - Align the ACPI output pointer to a 16-byte boundary
 631  *
 632  * @ctx: ACPI context
 633  */
 634 void acpi_align(struct acpi_ctx *ctx);
 635
 636 /**
 637  * acpi_align64() - Align the ACPI output pointer to a 64-byte boundary
 638  *
 639  * @ctx: ACPI context
 640  */
 641 void acpi_align64(struct acpi_ctx *ctx);
 642
 643 /**
 644  * acpi_inc() - Increment the ACPI output pointer by a bit
 645  *
 646  * The pointer is NOT aligned afterwards.
 647  *
 648  * @ctx: ACPI context
 649  * @amount: Amount to increment by
 650  */
 651 void acpi_inc(struct acpi_ctx *ctx, uint amount);
 652
 653 /**
 654  * acpi_inc_align() - Increment the ACPI output pointer by a bit and align
 655  *
 656  * The pointer is aligned afterwards to a 16-byte boundary
 657  *
 658  * @ctx: ACPI context
 659  * @amount: Amount to increment by
 660  */
 661 void acpi_inc_align(struct acpi_ctx *ctx, uint amount);
 662
 663 /**
 664  * acpi_add_table() - Add a new table to the RSDP and XSDT
 665  *
 666  * @ctx: ACPI context
 667  * @table: Table to add
 668  * @return 0 if OK, -E2BIG if too many tables
 669  */
 670 int acpi_add_table(struct acpi_ctx *ctx, void *table);
 671
 672 /**
 673  * acpi_setup_base_tables() - Set up context along with RSDP, RSDT and XSDT
 674  *
 675  * Set up the context with the given start position. Some basic tables are
 676  * always needed, so set them up as well.
 677  *
 678  * @ctx: Context to set up
 679  */
 680 void acpi_setup_base_tables(struct acpi_ctx *ctx, void *start);
 681
 682 #endif /* !__ACPI__*/
 683
 684 #include <asm/acpi_table.h>
 685
 686 #endif /* __ACPI_TABLE_H__ */