1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Helpers for ACPI table generation
5 * Based on acpi.c from coreboot
7 * Copyright 2019 Google LLC
9 * Copyright (C) 2015, Saket Sinha <saket.sinha89@gmail.com>
10 * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
13 #ifndef __ACPI_TABLE_H__
14 #define __ACPI_TABLE_H__
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 */
23 /* TODO(sjg@chromium.org): Figure out how to get compiler revision */
24 #define ASL_REVISION 0
26 #define ACPI_RSDP_REV_ACPI_1_0 0
27 #define ACPI_RSDP_REV_ACPI_2_0 2
29 #if !defined(__ACPI__)
31 #include <linux/bitops.h>
36 * RSDP (Root System Description Pointer)
37 * Note: ACPI 1.0 didn't have length, xsdt_address, and ext_checksum
40 char signature
[8]; /* RSDP signature */
41 u8 checksum
; /* Checksum of the first 20 bytes */
42 char oem_id
[6]; /* OEM ID */
43 u8 revision
; /* 0 for ACPI 1.0, others 2 */
44 u32 rsdt_address
; /* Physical address of RSDT (32 bits) */
45 u32 length
; /* Total RSDP length (incl. extended part) */
46 u64 xsdt_address
; /* Physical address of XSDT (64 bits) */
47 u8 ext_checksum
; /* Checksum of the whole table */
51 /* Generic ACPI header, provided by (almost) all tables */
52 struct __packed acpi_table_header
{
53 char signature
[ACPI_NAME_LEN
]; /* ACPI signature (4 ASCII chars) */
54 u32 length
; /* Table length in bytes (incl. header) */
55 u8 revision
; /* Table version (not ACPI version!) */
56 volatile u8 checksum
; /* To make sum of entire table == 0 */
57 char oem_id
[6]; /* OEM identification */
58 char oem_table_id
[8]; /* OEM table identification */
59 u32 oem_revision
; /* OEM revision number */
60 char aslc_id
[4]; /* ASL compiler vendor ID */
61 u32 aslc_revision
; /* ASL compiler revision number */
64 struct acpi_gen_regaddr
{
65 u8 space_id
; /* Address space ID */
66 u8 bit_width
; /* Register size in bits */
67 u8 bit_offset
; /* Register bit offset */
68 u8 access_size
; /* Access size */
69 u32 addrl
; /* Register address, low 32 bits */
70 u32 addrh
; /* Register address, high 32 bits */
73 /* A maximum number of 32 ACPI tables ought to be enough for now */
74 #define MAX_ACPI_TABLES 32
76 /* RSDT (Root System Description Table) */
78 struct acpi_table_header header
;
79 u32 entry
[MAX_ACPI_TABLES
];
82 /* XSDT (Extended System Description Table) */
84 struct acpi_table_header header
;
85 u64 entry
[MAX_ACPI_TABLES
];
89 struct __packed acpi_hpet
{
90 struct acpi_table_header header
;
92 struct acpi_gen_regaddr addr
;
98 struct __packed acpi_tpm2
{
99 struct acpi_table_header header
;
109 struct __packed acpi_tcpa
{
110 struct acpi_table_header header
;
116 /* FADT Preferred Power Management Profile */
117 enum acpi_pm_profile
{
118 ACPI_PM_UNSPECIFIED
= 0,
122 ACPI_PM_ENTERPRISE_SERVER
,
124 ACPI_PM_APPLIANCE_PC
,
125 ACPI_PM_PERFORMANCE_SERVER
,
129 /* FADT flags for p_lvl2_lat and p_lvl3_lat */
130 #define ACPI_FADT_C2_NOT_SUPPORTED 101
131 #define ACPI_FADT_C3_NOT_SUPPORTED 1001
133 /* FADT Boot Architecture Flags */
134 #define ACPI_FADT_LEGACY_FREE 0x00
135 #define ACPI_FADT_LEGACY_DEVICES BIT(0)
136 #define ACPI_FADT_8042 BIT(1)
137 #define ACPI_FADT_VGA_NOT_PRESENT BIT(2)
138 #define ACPI_FADT_MSI_NOT_SUPPORTED BIT(3)
139 #define ACPI_FADT_NO_PCIE_ASPM_CONTROL BIT(4)
141 /* FADT Feature Flags */
142 #define ACPI_FADT_WBINVD BIT(0)
143 #define ACPI_FADT_WBINVD_FLUSH BIT(1)
144 #define ACPI_FADT_C1_SUPPORTED BIT(2)
145 #define ACPI_FADT_C2_MP_SUPPORTED BIT(3)
146 #define ACPI_FADT_POWER_BUTTON BIT(4)
147 #define ACPI_FADT_SLEEP_BUTTON BIT(5)
148 #define ACPI_FADT_FIXED_RTC BIT(6)
149 #define ACPI_FADT_S4_RTC_WAKE BIT(7)
150 #define ACPI_FADT_32BIT_TIMER BIT(8)
151 #define ACPI_FADT_DOCKING_SUPPORTED BIT(9)
152 #define ACPI_FADT_RESET_REGISTER BIT(10)
153 #define ACPI_FADT_SEALED_CASE BIT(11)
154 #define ACPI_FADT_HEADLESS BIT(12)
155 #define ACPI_FADT_SLEEP_TYPE BIT(13)
156 #define ACPI_FADT_PCI_EXPRESS_WAKE BIT(14)
157 #define ACPI_FADT_PLATFORM_CLOCK BIT(15)
158 #define ACPI_FADT_S4_RTC_VALID BIT(16)
159 #define ACPI_FADT_REMOTE_POWER_ON BIT(17)
160 #define ACPI_FADT_APIC_CLUSTER BIT(18)
161 #define ACPI_FADT_APIC_PHYSICAL BIT(19)
162 #define ACPI_FADT_HW_REDUCED_ACPI BIT(20)
163 #define ACPI_FADT_LOW_PWR_IDLE_S0 BIT(21)
166 #define ACPI_ARM_PSCI_COMPLIANT BIT(0)
168 enum acpi_address_space_type
{
169 ACPI_ADDRESS_SPACE_MEMORY
= 0, /* System memory */
170 ACPI_ADDRESS_SPACE_IO
, /* System I/O */
171 ACPI_ADDRESS_SPACE_PCI
, /* PCI config space */
172 ACPI_ADDRESS_SPACE_EC
, /* Embedded controller */
173 ACPI_ADDRESS_SPACE_SMBUS
, /* SMBus */
174 ACPI_ADDRESS_SPACE_PCC
= 0x0a, /* Platform Comm. Channel */
175 ACPI_ADDRESS_SPACE_FIXED
= 0x7f /* Functional fixed hardware */
178 enum acpi_address_space_size
{
179 ACPI_ACCESS_SIZE_UNDEFINED
= 0,
180 ACPI_ACCESS_SIZE_BYTE_ACCESS
,
181 ACPI_ACCESS_SIZE_WORD_ACCESS
,
182 ACPI_ACCESS_SIZE_DWORD_ACCESS
,
183 ACPI_ACCESS_SIZE_QWORD_ACCESS
186 /* FADT (Fixed ACPI Description Table) */
187 struct __packed acpi_fadt
{
188 struct acpi_table_header header
;
192 u8 preferred_pm_profile
;
227 struct acpi_gen_regaddr reset_reg
;
231 u32 x_firmware_ctl_l
;
232 u32 x_firmware_ctl_h
;
235 struct acpi_gen_regaddr x_pm1a_evt_blk
;
236 struct acpi_gen_regaddr x_pm1b_evt_blk
;
237 struct acpi_gen_regaddr x_pm1a_cnt_blk
;
238 struct acpi_gen_regaddr x_pm1b_cnt_blk
;
239 struct acpi_gen_regaddr x_pm2_cnt_blk
;
240 struct acpi_gen_regaddr x_pm_tmr_blk
;
241 struct acpi_gen_regaddr x_gpe0_blk
;
242 struct acpi_gen_regaddr x_gpe1_blk
;
243 struct acpi_gen_regaddr sleep_control_reg
;
244 struct acpi_gen_regaddr sleep_status_reg
;
248 /* FADT TABLE Revision values - note these do not match the ACPI revision */
249 #define ACPI_FADT_REV_ACPI_1_0 1
250 #define ACPI_FADT_REV_ACPI_2_0 3
251 #define ACPI_FADT_REV_ACPI_3_0 4
252 #define ACPI_FADT_REV_ACPI_4_0 4
253 #define ACPI_FADT_REV_ACPI_5_0 5
254 #define ACPI_FADT_REV_ACPI_6_0 6
256 /* MADT TABLE Revision values - note these do not match the ACPI revision */
257 #define ACPI_MADT_REV_ACPI_3_0 2
258 #define ACPI_MADT_REV_ACPI_4_0 3
259 #define ACPI_MADT_REV_ACPI_5_0 3
260 #define ACPI_MADT_REV_ACPI_6_0 5
262 #define ACPI_MCFG_REV_ACPI_3_0 1
264 /* IVRS Revision Field */
265 #define IVRS_FORMAT_FIXED 0x01 /* Type 10h & 11h only */
266 #define IVRS_FORMAT_MIXED 0x02 /* Type 10h, 11h, & 40h */
269 #define ACPI_FACS_S4BIOS_F BIT(0)
270 #define ACPI_FACS_64BIT_WAKE_F BIT(1)
272 /* FACS (Firmware ACPI Control Structure) */
274 char signature
[ACPI_NAME_LEN
]; /* "FACS" */
275 u32 length
; /* Length in bytes (>= 64) */
276 u32 hardware_signature
; /* Hardware signature */
277 u32 firmware_waking_vector
; /* Firmware waking vector */
278 u32 global_lock
; /* Global lock */
279 u32 flags
; /* FACS flags */
280 u32 x_firmware_waking_vector_l
; /* X FW waking vector, low */
281 u32 x_firmware_waking_vector_h
; /* X FW waking vector, high */
282 u8 version
; /* Version 2 */
284 u32 ospm_flags
; /* OSPM enabled flags */
289 #define ACPI_MADT_PCAT_COMPAT BIT(0)
291 /* MADT (Multiple APIC Description Table) */
293 struct acpi_table_header header
;
294 u32 lapic_addr
; /* Local APIC address */
295 u32 flags
; /* Multiple APIC flags */
298 /* MADT: APIC Structure Type*/
299 enum acpi_apic_types
{
300 ACPI_APIC_LAPIC
= 0, /* Processor local APIC */
301 ACPI_APIC_IOAPIC
, /* I/O APIC */
302 ACPI_APIC_IRQ_SRC_OVERRIDE
, /* Interrupt source override */
303 ACPI_APIC_NMI_SRC
, /* NMI source */
304 ACPI_APIC_LAPIC_NMI
, /* Local APIC NMI */
305 ACPI_APIC_LAPIC_ADDR_OVERRIDE
, /* Local APIC address override */
306 ACPI_APIC_IOSAPIC
, /* I/O SAPIC */
307 ACPI_APIC_LSAPIC
, /* Local SAPIC */
308 ACPI_APIC_PLATFORM_IRQ_SRC
, /* Platform interrupt sources */
309 ACPI_APIC_LX2APIC
, /* Processor local x2APIC */
310 ACPI_APIC_LX2APIC_NMI
, /* Local x2APIC NMI */
311 ACPI_APIC_GICC
, /* Generic Interrupt Ctlr CPU i/f */
312 ACPI_APIC_GICD
/* Generic Interrupt Ctlr Distributor */
315 /* MADT: Processor Local APIC Structure */
317 #define LOCAL_APIC_FLAG_ENABLED BIT(0)
319 struct acpi_madt_lapic
{
320 u8 type
; /* Type (0) */
321 u8 length
; /* Length in bytes (8) */
322 u8 processor_id
; /* ACPI processor ID */
323 u8 apic_id
; /* Local APIC ID */
324 u32 flags
; /* Local APIC flags */
327 /* MADT: I/O APIC Structure */
328 struct acpi_madt_ioapic
{
329 u8 type
; /* Type (1) */
330 u8 length
; /* Length in bytes (12) */
331 u8 ioapic_id
; /* I/O APIC ID */
333 u32 ioapic_addr
; /* I/O APIC address */
334 u32 gsi_base
; /* Global system interrupt base */
337 /* MADT: Interrupt Source Override Structure */
338 struct __packed acpi_madt_irqoverride
{
339 u8 type
; /* Type (2) */
340 u8 length
; /* Length in bytes (10) */
341 u8 bus
; /* ISA (0) */
342 u8 source
; /* Bus-relative int. source (IRQ) */
343 u32 gsirq
; /* Global system interrupt */
344 u16 flags
; /* MPS INTI flags */
347 /* MADT: Local APIC NMI Structure */
348 struct __packed acpi_madt_lapic_nmi
{
349 u8 type
; /* Type (4) */
350 u8 length
; /* Length in bytes (6) */
351 u8 processor_id
; /* ACPI processor ID */
352 u16 flags
; /* MPS INTI flags */
353 u8 lint
; /* Local APIC LINT# */
356 /* flags for acpi_madr_gicc flags word */
358 ACPI_MADRF_ENABLED
= BIT(0),
359 ACPI_MADRF_PERF
= BIT(1),
360 ACPI_MADRF_VGIC
= BIT(2),
364 * struct __packed acpi_madr_gicc - GIC CPU interface (type 0xb)
366 * This holds information about the Generic Interrupt Controller (GIC) CPU
367 * interface. See ACPI Spec v6.3 section 5.2.12.14
369 struct __packed acpi_madr_gicc
{
387 u16 spi_overflow_irq
;
391 * struct __packed acpi_madr_gicc - GIC distributor (type 0xc)
393 * This holds information about the Generic Interrupt Controller (GIC)
394 * Distributor interface. See ACPI Spec v6.3 section 5.2.12.15
396 struct __packed acpi_madr_gicd
{
407 /* MCFG (PCI Express MMIO config space BAR description table) */
409 struct acpi_table_header header
;
413 struct acpi_mcfg_mmconfig
{
416 u16 pci_segment_group_number
;
422 /* PM1_CNT bit defines */
423 #define PM1_CNT_SCI_EN BIT(0)
425 /* ACPI global NVS structure */
426 struct acpi_global_nvs
;
428 /* CSRT (Core System Resource Table) */
430 struct acpi_table_header header
;
434 * struct acpi_csrt_group - header for a group within the CSRT
436 * The CSRT consists of one or more groups and this is the header for each
438 * See Core System Resources Table (CSRT), March 13, 2017, Microsoft Corporation
441 * https://uefi.org/sites/default/files/resources/CSRT%20v2.pdf
443 * @shared_info_length indicates the number of shared-info bytes following this
444 * struct (which may be 0)
446 struct acpi_csrt_group
{
454 u32 shared_info_length
;
458 * struct acpi_csrt_descriptor - describes the information that follows
460 * See the spec as above for details
462 struct acpi_csrt_descriptor
{
470 * struct acpi_csrt_shared_info - shared info for Intel tangier
472 * This provides the shared info for this particular board. Notes that the CSRT
473 * does not describe the format of data, so this format may not be used by any
476 struct acpi_csrt_shared_info
{
482 u8 interrupt_polarity
;
485 u8 dma_address_width
;
486 u16 base_request_line
;
487 u16 num_handshake_signals
;
491 /* Port types for ACPI _UPC object */
495 UPC_TYPE_EXPRESSCARD
,
498 UPC_TYPE_USB3_MICRO_B
,
499 UPC_TYPE_USB3_MICRO_AB
,
500 UPC_TYPE_USB3_POWER_B
,
501 UPC_TYPE_C_USB2_ONLY
,
502 UPC_TYPE_C_USB2_SS_SWITCH
,
504 UPC_TYPE_PROPRIETARY
= 0xff,
506 * The following types are not directly defined in the ACPI
507 * spec but are used by coreboot to identify a USB device type.
509 UPC_TYPE_INTERNAL
= 0xff,
514 enum dev_scope_type
{
515 SCOPE_PCI_ENDPOINT
= 1,
519 SCOPE_ACPI_NAMESPACE_DEVICE
= 5
522 struct __packed dev_scope
{
543 DRHD_INCLUDE_PCI_ALL
= BIT(0)
547 DMAR_INTR_REMAP
= BIT(0),
548 DMAR_X2APIC_OPT_OUT
= BIT(1),
549 DMAR_CTRL_PLATFORM_OPT_IN_FLAG
= BIT(2),
561 struct dmar_rmrr_entry
{
570 /* DMAR (DMA Remapping Reporting Structure) */
571 struct __packed acpi_dmar
{
572 struct acpi_table_header header
;
573 u8 host_address_width
;
576 struct dmar_entry structure
[0];
579 /* DBG2 definitions are partially used for SPCR interface_type */
581 /* Types for port_type field */
583 #define ACPI_DBG2_SERIAL_PORT 0x8000
584 #define ACPI_DBG2_1394_PORT 0x8001
585 #define ACPI_DBG2_USB_PORT 0x8002
586 #define ACPI_DBG2_NET_PORT 0x8003
588 /* Subtypes for port_subtype field */
590 #define ACPI_DBG2_16550_COMPATIBLE 0x0000
591 #define ACPI_DBG2_16550_SUBSET 0x0001
592 #define ACPI_DBG2_ARM_PL011 0x0003
593 #define ACPI_DBG2_ARM_SBSA_32BIT 0x000D
594 #define ACPI_DBG2_ARM_SBSA_GENERIC 0x000E
595 #define ACPI_DBG2_ARM_DCC 0x000F
596 #define ACPI_DBG2_BCM2835 0x0010
598 #define ACPI_DBG2_1394_STANDARD 0x0000
600 #define ACPI_DBG2_USB_XHCI 0x0000
601 #define ACPI_DBG2_USB_EHCI 0x0001
603 #define ACPI_DBG2_UNKNOWN 0x00FF
605 /* DBG2: Microsoft Debug Port Table 2 header */
606 struct __packed acpi_dbg2_header
{
607 struct acpi_table_header header
;
612 /* DBG2: Microsoft Debug Port Table 2 device entry */
613 struct __packed acpi_dbg2_device
{
617 u16 namespace_string_length
;
618 u16 namespace_string_offset
;
624 u16 base_address_offset
;
625 u16 address_size_offset
;
628 /* SPCR (Serial Port Console Redirection table) */
629 struct __packed acpi_spcr
{
630 struct acpi_table_header header
;
633 struct acpi_gen_regaddr serial_port
;
636 u32 interrupt
; /* Global system interrupt */
643 u16 pci_device_id
; /* Must be 0xffff if not PCI device */
644 u16 pci_vendor_id
; /* Must be 0xffff if not PCI device */
654 * struct acpi_gtdt - Generic Timer Description Table (GTDT)
656 * See ACPI Spec v6.3 section 5.2.24 for details
658 struct __packed acpi_gtdt
{
659 struct acpi_table_header header
;
671 u32 plat_timer_count
;
672 u32 plat_timer_offset
;
678 * struct acpi_bgrt - Boot Graphics Resource Table (BGRT)
680 * Optional table that provides a mechanism to indicate that an image was drawn
681 * on the screen during boot, and some information about the image.
683 * See ACPI Spec v6.3 section 5.2.22 for details
685 struct __packed acpi_bgrt
{
686 struct acpi_table_header header
;
696 #define ACPI_PPTT_TYPE_PROC 0
697 #define ACPI_PPTT_TYPE_CACHE 1
700 #define ACPI_PPTT_PHYSICAL_PACKAGE BIT(0)
701 #define ACPI_PPTT_PROC_ID_VALID BIT(1)
702 #define ACPI_PPTT_PROC_IS_THREAD BIT(2)
703 #define ACPI_PPTT_NODE_IS_LEAF BIT(3)
704 #define ACPI_PPTT_CHILDREN_IDENTICAL BIT(4)
707 * struct acpi_pptt_header - Processor Properties Topology Table (PPTT) header
709 * Describes the topological structure of processors and their shared resources,
712 * See ACPI Spec v6.3 section 5.2.29 for details
714 struct __packed acpi_pptt_header
{
715 u8 type
; /* ACPI_PPTT_TYPE_... */
721 * struct acpi_pptt_proc - a processor as described by PPTT
723 struct __packed acpi_pptt_proc
{
724 struct acpi_pptt_header hdr
;
731 /* Cache flags for acpi_pptt_cache */
732 #define ACPI_PPTT_SIZE_VALID BIT(0)
733 #define ACPI_PPTT_SETS_VALID BIT(1)
734 #define ACPI_PPTT_ASSOC_VALID BIT(2)
735 #define ACPI_PPTT_ALLOC_TYPE_VALID BIT(3)
736 #define ACPI_PPTT_CACHE_TYPE_VALID BIT(4)
737 #define ACPI_PPTT_WRITE_POLICY_VALID BIT(5)
738 #define ACPI_PPTT_LINE_SIZE_VALID BIT(6)
740 #define ACPI_PPTT_ALL_VALID 0x7f
741 #define ACPI_PPTT_ALL_BUT_WRITE_POL 0x5f
743 #define ACPI_PPTT_READ_ALLOC BIT(0)
744 #define ACPI_PPTT_WRITE_ALLOC BIT(1)
745 #define ACPI_PPTT_CACHE_TYPE_SHIFT 2
746 #define ACPI_PPTT_CACHE_TYPE_MASK (3 << ACPI_PPTT_CACHE_TYPE_SHIFT)
747 #define ACPI_PPTT_CACHE_TYPE_DATA 0
748 #define ACPI_PPTT_CACHE_TYPE_INSTR 1
749 #define ACPI_PPTT_CACHE_TYPE_UNIFIED 2
750 #define ACPI_PPTT_CACHE_TYPE_DATA 0
751 #define ACPI_PPTT_WRITE_THROUGH BIT(4)
754 * struct acpi_pptt_cache - a cache as described by PPTT
756 struct __packed acpi_pptt_cache
{
757 struct acpi_pptt_header hdr
;
759 u32 next_cache_level
;
767 /* Tables defined/reserved by ACPI and generated by U-Boot */
798 * acpi_get_table_revision() - Get the revision number generated for a table
800 * This keeps the version-number information in one place
802 * @table: ACPI table to check
803 * Return: version number that U-Boot generates
805 int acpi_get_table_revision(enum acpi_tables table
);
808 * acpi_create_dmar() - Create a DMA Remapping Reporting (DMAR) table
810 * @dmar: Place to put the table
811 * @flags: DMAR flags to use
812 * Return: 0 if OK, -ve on error
814 int acpi_create_dmar(struct acpi_dmar
*dmar
, enum dmar_flags flags
);
817 * acpi_create_dbg2() - Create a DBG2 table
819 * This table describes how to access the debug UART
821 * @dbg2: Place to put information
822 * @port_type: Serial port type (see ACPI_DBG2_...)
823 * @port_subtype: Serial port sub-type (see ACPI_DBG2_...)
824 * @address: ACPI address of port
825 * @address_size: Size of address space
826 * @device_path: Path of device (created using acpi_device_path())
828 void acpi_create_dbg2(struct acpi_dbg2_header
*dbg2
,
829 int port_type
, int port_subtype
,
830 struct acpi_gen_regaddr
*address
, uint32_t address_size
,
831 const char *device_path
);
834 * acpi_fill_header() - Set up a new table header
836 * This sets all fields except length, revision, checksum and aslc_revision
838 * @header: ACPI header to update
839 * @signature: Table signature to use (4 characters)
841 void acpi_fill_header(struct acpi_table_header
*header
, char *signature
);
844 * acpi_align() - Align the ACPI output pointer to a 16-byte boundary
848 void acpi_align(struct acpi_ctx
*ctx
);
851 * acpi_align64() - Align the ACPI output pointer to a 64-byte boundary
855 void acpi_align64(struct acpi_ctx
*ctx
);
858 * acpi_inc() - Increment the ACPI output pointer by a bit
860 * The pointer is NOT aligned afterwards.
863 * @amount: Amount to increment by
865 void acpi_inc(struct acpi_ctx
*ctx
, uint amount
);
868 * acpi_inc_align() - Increment the ACPI output pointer by a bit and align
870 * The pointer is aligned afterwards to a 16-byte boundary
873 * @amount: Amount to increment by
875 void acpi_inc_align(struct acpi_ctx
*ctx
, uint amount
);
878 * acpi_add_table() - Add a new table to the RSDP and XSDT
881 * @table: Table to add
882 * Return: 0 if OK, -E2BIG if too many tables
884 int acpi_add_table(struct acpi_ctx
*ctx
, void *table
);
886 static inline int acpi_add_fadt(struct acpi_ctx
*ctx
, struct acpi_fadt
*fadt
)
888 acpi_add_table(ctx
, fadt
);
889 acpi_inc(ctx
, sizeof(struct acpi_fadt
));
894 * acpi_write_rsdp() - Write out an RSDP indicating where the ACPI tables are
896 * @rsdp: Address to write RSDP
897 * @rsdt: Address of RSDT
898 * @xsdt: Address of XSDT
900 void acpi_write_rsdp(struct acpi_rsdp
*rsdp
, struct acpi_rsdt
*rsdt
,
901 struct acpi_xsdt
*xsdt
);
904 * acpi_fill_header() - Set up a table header
906 * @header: Pointer to header to set up
907 * @signature: 4-character signature to use (e.g. "FACS")
909 void acpi_fill_header(struct acpi_table_header
*header
, char *signature
);
912 * acpi_fill_csrt() - Fill out the body of the CSRT
914 * This should write the contents of the Core System Resource Table (CSRT)
915 * to the context. The header (struct acpi_table_header) has already been
918 * @ctx: ACPI context to write to
919 * @return 0 if OK, -ve on error
921 int acpi_fill_csrt(struct acpi_ctx
*ctx
);
924 * acpi_get_rsdp_addr() - get ACPI RSDP table address
926 * This routine returns the ACPI RSDP table address in the system memory.
928 * @return: ACPI RSDP table address
930 ulong
acpi_get_rsdp_addr(void);
933 * write_acpi_tables() - Write out the ACPI tables
935 * This writes all ACPI tables to the given address
937 * @start: Start address for the tables
938 * @return address of end of tables, where the next tables can be written
940 ulong
write_acpi_tables(ulong start
);
943 * acpi_find_table() - Look up an ACPI table
945 * @sig: Signature of table (4 characters, upper case)
946 * Return: pointer to table header, or NULL if not found
948 struct acpi_table_header
*acpi_find_table(const char *sig
);
950 #endif /* !__ACPI__*/
952 #include <asm/acpi_table.h>
954 #endif /* __ACPI_TABLE_H__ */