1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
564 lines
18 KiB
C
564 lines
18 KiB
C
/******************************************************************************
|
|
*
|
|
* Module Name: tbconvrt - ACPI Table conversion utilities
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2005, R. Byron Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <acpi/acpi.h>
|
|
#include <acpi/actables.h>
|
|
|
|
|
|
#define _COMPONENT ACPI_TABLES
|
|
ACPI_MODULE_NAME ("tbconvrt")
|
|
|
|
|
|
u8 acpi_fadt_is_v1;
|
|
EXPORT_SYMBOL(acpi_fadt_is_v1);
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_get_table_count
|
|
*
|
|
* PARAMETERS: RSDP - Pointer to the RSDP
|
|
* RSDT - Pointer to the RSDT/XSDT
|
|
*
|
|
* RETURN: The number of tables pointed to by the RSDT or XSDT.
|
|
*
|
|
* DESCRIPTION: Calculate the number of tables. Automatically handles either
|
|
* an RSDT or XSDT.
|
|
*
|
|
******************************************************************************/
|
|
|
|
u32
|
|
acpi_tb_get_table_count (
|
|
struct rsdp_descriptor *RSDP,
|
|
struct acpi_table_header *RSDT)
|
|
{
|
|
u32 pointer_size;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
if (RSDP->revision < 2) {
|
|
pointer_size = sizeof (u32);
|
|
}
|
|
else {
|
|
pointer_size = sizeof (u64);
|
|
}
|
|
|
|
/*
|
|
* Determine the number of tables pointed to by the RSDT/XSDT.
|
|
* This is defined by the ACPI Specification to be the number of
|
|
* pointers contained within the RSDT/XSDT. The size of the pointers
|
|
* is architecture-dependent.
|
|
*/
|
|
return ((RSDT->length - sizeof (struct acpi_table_header)) / pointer_size);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_convert_to_xsdt
|
|
*
|
|
* PARAMETERS: table_info - Info about the RSDT
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Convert an RSDT to an XSDT (internal common format)
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_tb_convert_to_xsdt (
|
|
struct acpi_table_desc *table_info)
|
|
{
|
|
acpi_size table_size;
|
|
u32 i;
|
|
XSDT_DESCRIPTOR *new_table;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/* Compute size of the converted XSDT */
|
|
|
|
table_size = ((acpi_size) acpi_gbl_rsdt_table_count * sizeof (u64)) +
|
|
sizeof (struct acpi_table_header);
|
|
|
|
/* Allocate an XSDT */
|
|
|
|
new_table = ACPI_MEM_CALLOCATE (table_size);
|
|
if (!new_table) {
|
|
return (AE_NO_MEMORY);
|
|
}
|
|
|
|
/* Copy the header and set the length */
|
|
|
|
ACPI_MEMCPY (new_table, table_info->pointer, sizeof (struct acpi_table_header));
|
|
new_table->length = (u32) table_size;
|
|
|
|
/* Copy the table pointers */
|
|
|
|
for (i = 0; i < acpi_gbl_rsdt_table_count; i++) {
|
|
if (acpi_gbl_RSDP->revision < 2) {
|
|
ACPI_STORE_ADDRESS (new_table->table_offset_entry[i],
|
|
(ACPI_CAST_PTR (struct rsdt_descriptor_rev1, table_info->pointer))->table_offset_entry[i]);
|
|
}
|
|
else {
|
|
new_table->table_offset_entry[i] =
|
|
(ACPI_CAST_PTR (XSDT_DESCRIPTOR, table_info->pointer))->table_offset_entry[i];
|
|
}
|
|
}
|
|
|
|
/* Delete the original table (either mapped or in a buffer) */
|
|
|
|
acpi_tb_delete_single_table (table_info);
|
|
|
|
/* Point the table descriptor to the new table */
|
|
|
|
table_info->pointer = ACPI_CAST_PTR (struct acpi_table_header, new_table);
|
|
table_info->length = table_size;
|
|
table_info->allocation = ACPI_MEM_ALLOCATED;
|
|
|
|
return (AE_OK);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_init_generic_address
|
|
*
|
|
* PARAMETERS: new_gas_struct - GAS struct to be initialized
|
|
* register_bit_width - Width of this register
|
|
* Address - Address of the register
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Initialize a GAS structure.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
acpi_tb_init_generic_address (
|
|
struct acpi_generic_address *new_gas_struct,
|
|
u8 register_bit_width,
|
|
acpi_physical_address address)
|
|
{
|
|
|
|
ACPI_STORE_ADDRESS (new_gas_struct->address, address);
|
|
|
|
new_gas_struct->address_space_id = ACPI_ADR_SPACE_SYSTEM_IO;
|
|
new_gas_struct->register_bit_width = register_bit_width;
|
|
new_gas_struct->register_bit_offset = 0;
|
|
new_gas_struct->access_width = 0;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_convert_fadt1
|
|
*
|
|
* PARAMETERS: local_fadt - Pointer to new FADT
|
|
* original_fadt - Pointer to old FADT
|
|
*
|
|
* RETURN: Populates local_fadt
|
|
*
|
|
* DESCRIPTION: Convert an ACPI 1.0 FADT to common internal format
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
acpi_tb_convert_fadt1 (
|
|
struct fadt_descriptor_rev2 *local_fadt,
|
|
struct fadt_descriptor_rev1 *original_fadt)
|
|
{
|
|
|
|
|
|
/* ACPI 1.0 FACS */
|
|
/* The BIOS stored FADT should agree with Revision 1.0 */
|
|
acpi_fadt_is_v1 = 1;
|
|
|
|
/*
|
|
* Copy the table header and the common part of the tables.
|
|
*
|
|
* The 2.0 table is an extension of the 1.0 table, so the entire 1.0
|
|
* table can be copied first, then expand some fields to 64 bits.
|
|
*/
|
|
ACPI_MEMCPY (local_fadt, original_fadt, sizeof (struct fadt_descriptor_rev1));
|
|
|
|
/* Convert table pointers to 64-bit fields */
|
|
|
|
ACPI_STORE_ADDRESS (local_fadt->xfirmware_ctrl, local_fadt->V1_firmware_ctrl);
|
|
ACPI_STORE_ADDRESS (local_fadt->Xdsdt, local_fadt->V1_dsdt);
|
|
|
|
/*
|
|
* System Interrupt Model isn't used in ACPI 2.0 (local_fadt->Reserved1 = 0;)
|
|
*/
|
|
|
|
/*
|
|
* This field is set by the OEM to convey the preferred power management
|
|
* profile to OSPM. It doesn't have any 1.0 equivalence. Since we don't
|
|
* know what kind of 32-bit system this is, we will use "unspecified".
|
|
*/
|
|
local_fadt->prefer_PM_profile = PM_UNSPECIFIED;
|
|
|
|
/*
|
|
* Processor Performance State Control. This is the value OSPM writes to
|
|
* the SMI_CMD register to assume processor performance state control
|
|
* responsibility. There isn't any equivalence in 1.0, but as many 1.x
|
|
* ACPI tables contain _PCT and _PSS we also keep this value, unless
|
|
* acpi_strict is set.
|
|
*/
|
|
if (acpi_strict)
|
|
local_fadt->pstate_cnt = 0;
|
|
|
|
/*
|
|
* Support for the _CST object and C States change notification.
|
|
* This data item hasn't any 1.0 equivalence so leave it zero.
|
|
*/
|
|
local_fadt->cst_cnt = 0;
|
|
|
|
/*
|
|
* FADT Rev 2 was an interim FADT released between ACPI 1.0 and ACPI 2.0.
|
|
* It primarily adds the FADT reset mechanism.
|
|
*/
|
|
if ((original_fadt->revision == 2) &&
|
|
(original_fadt->length == sizeof (struct fadt_descriptor_rev2_minus))) {
|
|
/*
|
|
* Grab the entire generic address struct, plus the 1-byte reset value
|
|
* that immediately follows.
|
|
*/
|
|
ACPI_MEMCPY (&local_fadt->reset_register,
|
|
&(ACPI_CAST_PTR (struct fadt_descriptor_rev2_minus, original_fadt))->reset_register,
|
|
sizeof (struct acpi_generic_address) + 1);
|
|
}
|
|
else {
|
|
/*
|
|
* Since there isn't any equivalence in 1.0 and since it is highly
|
|
* likely that a 1.0 system has legacy support.
|
|
*/
|
|
local_fadt->iapc_boot_arch = BAF_LEGACY_DEVICES;
|
|
}
|
|
|
|
/*
|
|
* Convert the V1.0 block addresses to V2.0 GAS structures
|
|
*/
|
|
acpi_tb_init_generic_address (&local_fadt->xpm1a_evt_blk, local_fadt->pm1_evt_len,
|
|
(acpi_physical_address) local_fadt->V1_pm1a_evt_blk);
|
|
acpi_tb_init_generic_address (&local_fadt->xpm1b_evt_blk, local_fadt->pm1_evt_len,
|
|
(acpi_physical_address) local_fadt->V1_pm1b_evt_blk);
|
|
acpi_tb_init_generic_address (&local_fadt->xpm1a_cnt_blk, local_fadt->pm1_cnt_len,
|
|
(acpi_physical_address) local_fadt->V1_pm1a_cnt_blk);
|
|
acpi_tb_init_generic_address (&local_fadt->xpm1b_cnt_blk, local_fadt->pm1_cnt_len,
|
|
(acpi_physical_address) local_fadt->V1_pm1b_cnt_blk);
|
|
acpi_tb_init_generic_address (&local_fadt->xpm2_cnt_blk, local_fadt->pm2_cnt_len,
|
|
(acpi_physical_address) local_fadt->V1_pm2_cnt_blk);
|
|
acpi_tb_init_generic_address (&local_fadt->xpm_tmr_blk, local_fadt->pm_tm_len,
|
|
(acpi_physical_address) local_fadt->V1_pm_tmr_blk);
|
|
acpi_tb_init_generic_address (&local_fadt->xgpe0_blk, 0,
|
|
(acpi_physical_address) local_fadt->V1_gpe0_blk);
|
|
acpi_tb_init_generic_address (&local_fadt->xgpe1_blk, 0,
|
|
(acpi_physical_address) local_fadt->V1_gpe1_blk);
|
|
|
|
/* Create separate GAS structs for the PM1 Enable registers */
|
|
|
|
acpi_tb_init_generic_address (&acpi_gbl_xpm1a_enable,
|
|
(u8) ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len),
|
|
(acpi_physical_address) (local_fadt->xpm1a_evt_blk.address +
|
|
ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len)));
|
|
|
|
/* PM1B is optional; leave null if not present */
|
|
|
|
if (local_fadt->xpm1b_evt_blk.address) {
|
|
acpi_tb_init_generic_address (&acpi_gbl_xpm1b_enable,
|
|
(u8) ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len),
|
|
(acpi_physical_address) (local_fadt->xpm1b_evt_blk.address +
|
|
ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len)));
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_convert_fadt2
|
|
*
|
|
* PARAMETERS: local_fadt - Pointer to new FADT
|
|
* original_fadt - Pointer to old FADT
|
|
*
|
|
* RETURN: Populates local_fadt
|
|
*
|
|
* DESCRIPTION: Convert an ACPI 2.0 FADT to common internal format.
|
|
* Handles optional "X" fields.
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
acpi_tb_convert_fadt2 (
|
|
struct fadt_descriptor_rev2 *local_fadt,
|
|
struct fadt_descriptor_rev2 *original_fadt)
|
|
{
|
|
|
|
/* We have an ACPI 2.0 FADT but we must copy it to our local buffer */
|
|
|
|
ACPI_MEMCPY (local_fadt, original_fadt, sizeof (struct fadt_descriptor_rev2));
|
|
|
|
/*
|
|
* "X" fields are optional extensions to the original V1.0 fields, so
|
|
* we must selectively expand V1.0 fields if the corresponding X field
|
|
* is zero.
|
|
*/
|
|
if (!(local_fadt->xfirmware_ctrl)) {
|
|
ACPI_STORE_ADDRESS (local_fadt->xfirmware_ctrl, local_fadt->V1_firmware_ctrl);
|
|
}
|
|
|
|
if (!(local_fadt->Xdsdt)) {
|
|
ACPI_STORE_ADDRESS (local_fadt->Xdsdt, local_fadt->V1_dsdt);
|
|
}
|
|
|
|
if (!(local_fadt->xpm1a_evt_blk.address)) {
|
|
acpi_tb_init_generic_address (&local_fadt->xpm1a_evt_blk,
|
|
local_fadt->pm1_evt_len, (acpi_physical_address) local_fadt->V1_pm1a_evt_blk);
|
|
}
|
|
|
|
if (!(local_fadt->xpm1b_evt_blk.address)) {
|
|
acpi_tb_init_generic_address (&local_fadt->xpm1b_evt_blk,
|
|
local_fadt->pm1_evt_len, (acpi_physical_address) local_fadt->V1_pm1b_evt_blk);
|
|
}
|
|
|
|
if (!(local_fadt->xpm1a_cnt_blk.address)) {
|
|
acpi_tb_init_generic_address (&local_fadt->xpm1a_cnt_blk,
|
|
local_fadt->pm1_cnt_len, (acpi_physical_address) local_fadt->V1_pm1a_cnt_blk);
|
|
}
|
|
|
|
if (!(local_fadt->xpm1b_cnt_blk.address)) {
|
|
acpi_tb_init_generic_address (&local_fadt->xpm1b_cnt_blk,
|
|
local_fadt->pm1_cnt_len, (acpi_physical_address) local_fadt->V1_pm1b_cnt_blk);
|
|
}
|
|
|
|
if (!(local_fadt->xpm2_cnt_blk.address)) {
|
|
acpi_tb_init_generic_address (&local_fadt->xpm2_cnt_blk,
|
|
local_fadt->pm2_cnt_len, (acpi_physical_address) local_fadt->V1_pm2_cnt_blk);
|
|
}
|
|
|
|
if (!(local_fadt->xpm_tmr_blk.address)) {
|
|
acpi_tb_init_generic_address (&local_fadt->xpm_tmr_blk,
|
|
local_fadt->pm_tm_len, (acpi_physical_address) local_fadt->V1_pm_tmr_blk);
|
|
}
|
|
|
|
if (!(local_fadt->xgpe0_blk.address)) {
|
|
acpi_tb_init_generic_address (&local_fadt->xgpe0_blk,
|
|
0, (acpi_physical_address) local_fadt->V1_gpe0_blk);
|
|
}
|
|
|
|
if (!(local_fadt->xgpe1_blk.address)) {
|
|
acpi_tb_init_generic_address (&local_fadt->xgpe1_blk,
|
|
0, (acpi_physical_address) local_fadt->V1_gpe1_blk);
|
|
}
|
|
|
|
/* Create separate GAS structs for the PM1 Enable registers */
|
|
|
|
acpi_tb_init_generic_address (&acpi_gbl_xpm1a_enable,
|
|
(u8) ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len),
|
|
(acpi_physical_address) (local_fadt->xpm1a_evt_blk.address +
|
|
ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len)));
|
|
acpi_gbl_xpm1a_enable.address_space_id = local_fadt->xpm1a_evt_blk.address_space_id;
|
|
|
|
/* PM1B is optional; leave null if not present */
|
|
|
|
if (local_fadt->xpm1b_evt_blk.address) {
|
|
acpi_tb_init_generic_address (&acpi_gbl_xpm1b_enable,
|
|
(u8) ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len),
|
|
(acpi_physical_address) (local_fadt->xpm1b_evt_blk.address +
|
|
ACPI_DIV_2 (acpi_gbl_FADT->pm1_evt_len)));
|
|
acpi_gbl_xpm1b_enable.address_space_id = local_fadt->xpm1b_evt_blk.address_space_id;
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_convert_table_fadt
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Converts a BIOS supplied ACPI 1.0 FADT to a local
|
|
* ACPI 2.0 FADT. If the BIOS supplied a 2.0 FADT then it is simply
|
|
* copied to the local FADT. The ACPI CA software uses this
|
|
* local FADT. Thus a significant amount of special #ifdef
|
|
* type codeing is saved.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_tb_convert_table_fadt (void)
|
|
{
|
|
struct fadt_descriptor_rev2 *local_fadt;
|
|
struct acpi_table_desc *table_desc;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE ("tb_convert_table_fadt");
|
|
|
|
|
|
/*
|
|
* acpi_gbl_FADT is valid. Validate the FADT length. The table must be
|
|
* at least as long as the version 1.0 FADT
|
|
*/
|
|
if (acpi_gbl_FADT->length < sizeof (struct fadt_descriptor_rev1)) {
|
|
ACPI_REPORT_ERROR (("FADT is invalid, too short: 0x%X\n", acpi_gbl_FADT->length));
|
|
return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
|
|
}
|
|
|
|
/* Allocate buffer for the ACPI 2.0(+) FADT */
|
|
|
|
local_fadt = ACPI_MEM_CALLOCATE (sizeof (struct fadt_descriptor_rev2));
|
|
if (!local_fadt) {
|
|
return_ACPI_STATUS (AE_NO_MEMORY);
|
|
}
|
|
|
|
if (acpi_gbl_FADT->revision >= FADT2_REVISION_ID) {
|
|
if (acpi_gbl_FADT->length < sizeof (struct fadt_descriptor_rev2)) {
|
|
/* Length is too short to be a V2.0 table */
|
|
|
|
ACPI_REPORT_WARNING (("Inconsistent FADT length (0x%X) and revision (0x%X), using FADT V1.0 portion of table\n",
|
|
acpi_gbl_FADT->length, acpi_gbl_FADT->revision));
|
|
|
|
acpi_tb_convert_fadt1 (local_fadt, (void *) acpi_gbl_FADT);
|
|
}
|
|
else {
|
|
/* Valid V2.0 table */
|
|
|
|
acpi_tb_convert_fadt2 (local_fadt, acpi_gbl_FADT);
|
|
}
|
|
}
|
|
else {
|
|
/* Valid V1.0 table */
|
|
|
|
acpi_tb_convert_fadt1 (local_fadt, (void *) acpi_gbl_FADT);
|
|
}
|
|
|
|
/*
|
|
* Global FADT pointer will point to the new common V2.0 FADT
|
|
*/
|
|
acpi_gbl_FADT = local_fadt;
|
|
acpi_gbl_FADT->length = sizeof (FADT_DESCRIPTOR);
|
|
|
|
/* Free the original table */
|
|
|
|
table_desc = acpi_gbl_table_lists[ACPI_TABLE_FADT].next;
|
|
acpi_tb_delete_single_table (table_desc);
|
|
|
|
/* Install the new table */
|
|
|
|
table_desc->pointer = ACPI_CAST_PTR (struct acpi_table_header, acpi_gbl_FADT);
|
|
table_desc->allocation = ACPI_MEM_ALLOCATED;
|
|
table_desc->length = sizeof (struct fadt_descriptor_rev2);
|
|
|
|
/* Dump the entire FADT */
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_TABLES,
|
|
"Hex dump of common internal FADT, size %d (%X)\n",
|
|
acpi_gbl_FADT->length, acpi_gbl_FADT->length));
|
|
ACPI_DUMP_BUFFER ((u8 *) (acpi_gbl_FADT), acpi_gbl_FADT->length);
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_tb_convert_table_facs
|
|
*
|
|
* PARAMETERS: table_info - Info for currently installed FACS
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Convert ACPI 1.0 and ACPI 2.0 FACS to a common internal
|
|
* table format.
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_tb_build_common_facs (
|
|
struct acpi_table_desc *table_info)
|
|
{
|
|
|
|
ACPI_FUNCTION_TRACE ("tb_build_common_facs");
|
|
|
|
|
|
/* Absolute minimum length is 24, but the ACPI spec says 64 */
|
|
|
|
if (acpi_gbl_FACS->length < 24) {
|
|
ACPI_REPORT_ERROR (("Invalid FACS table length: 0x%X\n", acpi_gbl_FACS->length));
|
|
return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
|
|
}
|
|
|
|
if (acpi_gbl_FACS->length < 64) {
|
|
ACPI_REPORT_WARNING (("FACS is shorter than the ACPI specification allows: 0x%X, using anyway\n",
|
|
acpi_gbl_FACS->length));
|
|
}
|
|
|
|
/* Copy fields to the new FACS */
|
|
|
|
acpi_gbl_common_fACS.global_lock = &(acpi_gbl_FACS->global_lock);
|
|
|
|
if ((acpi_gbl_RSDP->revision < 2) ||
|
|
(acpi_gbl_FACS->length < 32) ||
|
|
(!(acpi_gbl_FACS->xfirmware_waking_vector))) {
|
|
/* ACPI 1.0 FACS or short table or optional X_ field is zero */
|
|
|
|
acpi_gbl_common_fACS.firmware_waking_vector = ACPI_CAST_PTR (u64, &(acpi_gbl_FACS->firmware_waking_vector));
|
|
acpi_gbl_common_fACS.vector_width = 32;
|
|
}
|
|
else {
|
|
/* ACPI 2.0 FACS with valid X_ field */
|
|
|
|
acpi_gbl_common_fACS.firmware_waking_vector = &acpi_gbl_FACS->xfirmware_waking_vector;
|
|
acpi_gbl_common_fACS.vector_width = 64;
|
|
}
|
|
|
|
return_ACPI_STATUS (AE_OK);
|
|
}
|
|
|
|
|