diff options
Diffstat (limited to 'usr/src/uts/intel/io/acpica/tables/tbxfroot.c')
| -rw-r--r-- | usr/src/uts/intel/io/acpica/tables/tbxfroot.c | 323 |
1 files changed, 0 insertions, 323 deletions
diff --git a/usr/src/uts/intel/io/acpica/tables/tbxfroot.c b/usr/src/uts/intel/io/acpica/tables/tbxfroot.c deleted file mode 100644 index aaa24c470f..0000000000 --- a/usr/src/uts/intel/io/acpica/tables/tbxfroot.c +++ /dev/null @@ -1,323 +0,0 @@ -/****************************************************************************** - * - * Module Name: tbxfroot - Find the root ACPI table (RSDT) - * - *****************************************************************************/ - -/* - * Copyright (C) 2000 - 2016, Intel Corp. - * 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 "acpi.h" -#include "accommon.h" -#include "actables.h" - - -#define _COMPONENT ACPI_TABLES - ACPI_MODULE_NAME ("tbxfroot") - - -/******************************************************************************* - * - * FUNCTION: AcpiTbGetRsdpLength - * - * PARAMETERS: Rsdp - Pointer to RSDP - * - * RETURN: Table length - * - * DESCRIPTION: Get the length of the RSDP - * - ******************************************************************************/ - -UINT32 -AcpiTbGetRsdpLength ( - ACPI_TABLE_RSDP *Rsdp) -{ - - if (!ACPI_VALIDATE_RSDP_SIG (Rsdp->Signature)) - { - /* BAD Signature */ - - return (0); - } - - /* "Length" field is available if table version >= 2 */ - - if (Rsdp->Revision >= 2) - { - return (Rsdp->Length); - } - else - { - return (ACPI_RSDP_CHECKSUM_LENGTH); - } -} - - -/******************************************************************************* - * - * FUNCTION: AcpiTbValidateRsdp - * - * PARAMETERS: Rsdp - Pointer to unvalidated RSDP - * - * RETURN: Status - * - * DESCRIPTION: Validate the RSDP (ptr) - * - ******************************************************************************/ - -ACPI_STATUS -AcpiTbValidateRsdp ( - ACPI_TABLE_RSDP *Rsdp) -{ - - /* - * The signature and checksum must both be correct - * - * Note: Sometimes there exists more than one RSDP in memory; the valid - * RSDP has a valid checksum, all others have an invalid checksum. - */ - if (!ACPI_VALIDATE_RSDP_SIG (Rsdp->Signature)) - { - /* Nope, BAD Signature */ - - return (AE_BAD_SIGNATURE); - } - - /* Check the standard checksum */ - - if (AcpiTbChecksum ((UINT8 *) Rsdp, ACPI_RSDP_CHECKSUM_LENGTH) != 0) - { - return (AE_BAD_CHECKSUM); - } - - /* Check extended checksum if table version >= 2 */ - - if ((Rsdp->Revision >= 2) && - (AcpiTbChecksum ((UINT8 *) Rsdp, ACPI_RSDP_XCHECKSUM_LENGTH) != 0)) - { - return (AE_BAD_CHECKSUM); - } - - return (AE_OK); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiFindRootPointer - * - * PARAMETERS: TableAddress - Where the table pointer is returned - * - * RETURN: Status, RSDP physical address - * - * DESCRIPTION: Search lower 1Mbyte of memory for the root system descriptor - * pointer structure. If it is found, set *RSDP to point to it. - * - * NOTE1: The RSDP must be either in the first 1K of the Extended - * BIOS Data Area or between E0000 and FFFFF (From ACPI Spec.) - * Only a 32-bit physical address is necessary. - * - * NOTE2: This function is always available, regardless of the - * initialization state of the rest of ACPI. - * - ******************************************************************************/ - -ACPI_STATUS -AcpiFindRootPointer ( - ACPI_PHYSICAL_ADDRESS *TableAddress) -{ - UINT8 *TablePtr; - UINT8 *MemRover; - UINT32 PhysicalAddress; - - - ACPI_FUNCTION_TRACE (AcpiFindRootPointer); - - - /* 1a) Get the location of the Extended BIOS Data Area (EBDA) */ - - TablePtr = AcpiOsMapMemory ( - (ACPI_PHYSICAL_ADDRESS) ACPI_EBDA_PTR_LOCATION, - ACPI_EBDA_PTR_LENGTH); - if (!TablePtr) - { - ACPI_ERROR ((AE_INFO, - "Could not map memory at 0x%8.8X for length %u", - ACPI_EBDA_PTR_LOCATION, ACPI_EBDA_PTR_LENGTH)); - - return_ACPI_STATUS (AE_NO_MEMORY); - } - - ACPI_MOVE_16_TO_32 (&PhysicalAddress, TablePtr); - - /* Convert segment part to physical address */ - - PhysicalAddress <<= 4; - AcpiOsUnmapMemory (TablePtr, ACPI_EBDA_PTR_LENGTH); - - /* EBDA present? */ - - if (PhysicalAddress > 0x400) - { - /* - * 1b) Search EBDA paragraphs (EBDA is required to be a - * minimum of 1K length) - */ - TablePtr = AcpiOsMapMemory ( - (ACPI_PHYSICAL_ADDRESS) PhysicalAddress, - ACPI_EBDA_WINDOW_SIZE); - if (!TablePtr) - { - ACPI_ERROR ((AE_INFO, - "Could not map memory at 0x%8.8X for length %u", - PhysicalAddress, ACPI_EBDA_WINDOW_SIZE)); - - return_ACPI_STATUS (AE_NO_MEMORY); - } - - MemRover = AcpiTbScanMemoryForRsdp ( - TablePtr, ACPI_EBDA_WINDOW_SIZE); - AcpiOsUnmapMemory (TablePtr, ACPI_EBDA_WINDOW_SIZE); - - if (MemRover) - { - /* Return the physical address */ - - PhysicalAddress += - (UINT32) ACPI_PTR_DIFF (MemRover, TablePtr); - - *TableAddress = (ACPI_PHYSICAL_ADDRESS) PhysicalAddress; - return_ACPI_STATUS (AE_OK); - } - } - - /* - * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh - */ - TablePtr = AcpiOsMapMemory ( - (ACPI_PHYSICAL_ADDRESS) ACPI_HI_RSDP_WINDOW_BASE, - ACPI_HI_RSDP_WINDOW_SIZE); - - if (!TablePtr) - { - ACPI_ERROR ((AE_INFO, - "Could not map memory at 0x%8.8X for length %u", - ACPI_HI_RSDP_WINDOW_BASE, ACPI_HI_RSDP_WINDOW_SIZE)); - - return_ACPI_STATUS (AE_NO_MEMORY); - } - - MemRover = AcpiTbScanMemoryForRsdp ( - TablePtr, ACPI_HI_RSDP_WINDOW_SIZE); - AcpiOsUnmapMemory (TablePtr, ACPI_HI_RSDP_WINDOW_SIZE); - - if (MemRover) - { - /* Return the physical address */ - - PhysicalAddress = (UINT32) - (ACPI_HI_RSDP_WINDOW_BASE + ACPI_PTR_DIFF (MemRover, TablePtr)); - - *TableAddress = (ACPI_PHYSICAL_ADDRESS) PhysicalAddress; - return_ACPI_STATUS (AE_OK); - } - - /* A valid RSDP was not found */ - - ACPI_BIOS_ERROR ((AE_INFO, "A valid RSDP was not found")); - return_ACPI_STATUS (AE_NOT_FOUND); -} - -ACPI_EXPORT_SYMBOL (AcpiFindRootPointer) - - -/******************************************************************************* - * - * FUNCTION: AcpiTbScanMemoryForRsdp - * - * PARAMETERS: StartAddress - Starting pointer for search - * Length - Maximum length to search - * - * RETURN: Pointer to the RSDP if found, otherwise NULL. - * - * DESCRIPTION: Search a block of memory for the RSDP signature - * - ******************************************************************************/ - -UINT8 * -AcpiTbScanMemoryForRsdp ( - UINT8 *StartAddress, - UINT32 Length) -{ - ACPI_STATUS Status; - UINT8 *MemRover; - UINT8 *EndAddress; - - - ACPI_FUNCTION_TRACE (TbScanMemoryForRsdp); - - - EndAddress = StartAddress + Length; - - /* Search from given start address for the requested length */ - - for (MemRover = StartAddress; MemRover < EndAddress; - MemRover += ACPI_RSDP_SCAN_STEP) - { - /* The RSDP signature and checksum must both be correct */ - - Status = AcpiTbValidateRsdp ( - ACPI_CAST_PTR (ACPI_TABLE_RSDP, MemRover)); - if (ACPI_SUCCESS (Status)) - { - /* Sig and checksum valid, we have found a real RSDP */ - - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "RSDP located at physical address %p\n", MemRover)); - return_PTR (MemRover); - } - - /* No sig match or bad checksum, keep searching */ - } - - /* Searched entire block, no RSDP was found */ - - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Searched entire block from %p, valid RSDP was not found\n", - StartAddress)); - return_PTR (NULL); -} |