diff options
Diffstat (limited to 'sys/contrib/dev/acpica/tbxfroot.c')
| -rw-r--r-- | sys/contrib/dev/acpica/tbxfroot.c | 475 |
1 files changed, 265 insertions, 210 deletions
diff --git a/sys/contrib/dev/acpica/tbxfroot.c b/sys/contrib/dev/acpica/tbxfroot.c index e9a3e84..8a2e147 100644 --- a/sys/contrib/dev/acpica/tbxfroot.c +++ b/sys/contrib/dev/acpica/tbxfroot.c @@ -1,7 +1,7 @@ /****************************************************************************** * * Module Name: tbxfroot - Find the root ACPI table (RSDT) - * $Revision: 52 $ + * $Revision: 58 $ * *****************************************************************************/ @@ -9,7 +9,7 @@ * * 1. Copyright Notice * - * Some or all of this work - Copyright (c) 1999, 2000, 2001, Intel Corp. + * Some or all of this work - Copyright (c) 1999 - 2002, Intel Corp. * All rights reserved. * * 2. License @@ -117,236 +117,70 @@ #define __TBXFROOT_C__ #include "acpi.h" -#include "achware.h" #include "actables.h" #define _COMPONENT ACPI_TABLES - MODULE_NAME ("tbxfroot") - -#define RSDP_CHECKSUM_LENGTH 20 + ACPI_MODULE_NAME ("tbxfroot") /******************************************************************************* * - * FUNCTION: AcpiFindRootPointer + * FUNCTION: AcpiTbFindTable * - * PARAMETERS: **RsdpPhysicalAddress - Where to place the RSDP address - * Flags - Logical/Physical addressing + * PARAMETERS: Signature - String with ACPI table signature + * OemId - String with the table OEM ID + * OemTableId - String with the OEM Table ID. * - * RETURN: Status, Physical address of the RSDP + * RETURN: Status * - * DESCRIPTION: Find the RSDP + * DESCRIPTION: Find an ACPI table (in the RSDT/XSDT) that matches the + * Signature, OEM ID and OEM Table ID. * ******************************************************************************/ ACPI_STATUS -AcpiFindRootPointer ( - UINT32 Flags, - ACPI_PHYSICAL_ADDRESS *RsdpPhysicalAddress) +AcpiTbFindTable ( + NATIVE_CHAR *Signature, + NATIVE_CHAR *OemId, + NATIVE_CHAR *OemTableId, + ACPI_TABLE_HEADER **TablePtr) { - ACPI_TABLE_DESC TableInfo; ACPI_STATUS Status; + ACPI_TABLE_HEADER *Table; - FUNCTION_TRACE ("AcpiFindRootPointer"); - - - /* Get the RSDP */ - - Status = AcpiTbFindRsdp (&TableInfo, Flags); - if (ACPI_FAILURE (Status)) - { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "RSDP structure not found\n")); - return_ACPI_STATUS (AE_NO_ACPI_TABLES); - } - - *RsdpPhysicalAddress = TableInfo.PhysicalAddress; - - return_ACPI_STATUS (AE_OK); -} - - -/******************************************************************************* - * - * 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) -{ - UINT32 Offset; - UINT8 *MemRover; - - - FUNCTION_TRACE ("TbScanMemoryForRsdp"); + ACPI_FUNCTION_TRACE ("TbFindTable"); - /* Search from given start addr for the requested length */ + /* Validate string lengths */ - for (Offset = 0, MemRover = StartAddress; - Offset < Length; - Offset += RSDP_SCAN_STEP, MemRover += RSDP_SCAN_STEP) + if ((ACPI_STRLEN (Signature) > 4) || + (ACPI_STRLEN (OemId) > 6) || + (ACPI_STRLEN (OemTableId) > 8)) { - - /* The signature and checksum must both be correct */ - - if (STRNCMP ((NATIVE_CHAR *) MemRover, - RSDP_SIG, sizeof (RSDP_SIG)-1) == 0 && - AcpiTbChecksum (MemRover, RSDP_CHECKSUM_LENGTH) == 0) - { - /* If so, we have found the RSDP */ - - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "RSDP located at physical address %p\n",MemRover)); - return_PTR (MemRover); - } + return_ACPI_STATUS (AE_AML_STRING_LIMIT); } - /* Searched entire block, no RSDP was found */ - - ACPI_DEBUG_PRINT ((ACPI_DB_INFO,"Searched entire block, no RSDP was found.\n")); - - return_PTR (NULL); -} - - -/******************************************************************************* - * - * FUNCTION: AcpiTbFindRsdp - * - * PARAMETERS: *TableInfo - Where the table info is returned - * Flags - Current memory mode (logical vs. - * physical addressing) - * - * RETURN: Status - * - * DESCRIPTION: Search lower 1Mbyte of memory for the root system descriptor - * pointer structure. If it is found, set *RSDP to point to it. - * - * NOTE: The RSDP must be either in the first 1K of the Extended - * BIOS Data Area or between E0000 and FFFFF (ACPI 1.0 section - * 5.2.2; assertion #421). - * - ******************************************************************************/ - -ACPI_STATUS -AcpiTbFindRsdp ( - ACPI_TABLE_DESC *TableInfo, - UINT32 Flags) -{ - UINT8 *TablePtr; - UINT8 *MemRover; - UINT64 PhysAddr; - ACPI_STATUS Status = AE_OK; - - - FUNCTION_TRACE ("TbFindRsdp"); - + /* Find the table */ - /* - * Scan supports either 1) Logical addressing or 2) Physical addressing - */ - if ((Flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) + Status = AcpiGetFirmwareTable (Signature, 1, + ACPI_LOGICAL_ADDRESSING, &Table); + if (ACPI_FAILURE (Status)) { - /* - * 1) Search EBDA (low memory) paragraphs - */ - Status = AcpiOsMapMemory (LO_RSDP_WINDOW_BASE, LO_RSDP_WINDOW_SIZE, - (void **) &TablePtr); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - MemRover = AcpiTbScanMemoryForRsdp (TablePtr, LO_RSDP_WINDOW_SIZE); - AcpiOsUnmapMemory (TablePtr, LO_RSDP_WINDOW_SIZE); - - if (MemRover) - { - /* Found it, return the physical address */ - - PhysAddr = LO_RSDP_WINDOW_BASE; - PhysAddr += (MemRover - TablePtr); - - TableInfo->PhysicalAddress = PhysAddr; - - return_ACPI_STATUS (AE_OK); - } - - /* - * 2) Search upper memory: 16-byte boundaries in E0000h-F0000h - */ - Status = AcpiOsMapMemory (HI_RSDP_WINDOW_BASE, HI_RSDP_WINDOW_SIZE, - (void **) &TablePtr); - if (ACPI_FAILURE (Status)) - { - return_ACPI_STATUS (Status); - } - - MemRover = AcpiTbScanMemoryForRsdp (TablePtr, HI_RSDP_WINDOW_SIZE); - AcpiOsUnmapMemory (TablePtr, HI_RSDP_WINDOW_SIZE); - - if (MemRover) - { - /* Found it, return the physical address */ - - PhysAddr = HI_RSDP_WINDOW_BASE; - PhysAddr += (MemRover - TablePtr); - - TableInfo->PhysicalAddress = PhysAddr; - - return_ACPI_STATUS (AE_OK); - } + return_ACPI_STATUS (Status); } + /* Check OemId and OemTableId */ - /* - * Physical addressing - */ - else + if ((OemId[0] && ACPI_STRCMP (OemId, Table->OemId)) || + (OemTableId[0] && ACPI_STRCMP (OemTableId, Table->OemTableId))) { - /* - * 1) Search EBDA (low memory) paragraphs - */ - MemRover = AcpiTbScanMemoryForRsdp ((UINT8 *) LO_RSDP_WINDOW_BASE, - LO_RSDP_WINDOW_SIZE); - if (MemRover) - { - /* Found it, return the physical address */ - - TableInfo->PhysicalAddress = (ACPI_TBLPTR) MemRover; - return_ACPI_STATUS (AE_OK); - } - - /* - * 2) Search upper memory: 16-byte boundaries in E0000h-F0000h - */ - MemRover = AcpiTbScanMemoryForRsdp ((UINT8 *) HI_RSDP_WINDOW_BASE, - HI_RSDP_WINDOW_SIZE); - if (MemRover) - { - /* Found it, return the physical address */ - - TableInfo->PhysicalAddress = (ACPI_TBLPTR) MemRover; - return_ACPI_STATUS (AE_OK); - } + return_ACPI_STATUS (AE_AML_NAME_NOT_FOUND); } - - /* RSDP signature was not found */ - - return_ACPI_STATUS (AE_NOT_FOUND); + *TablePtr = Table; + return_ACPI_STATUS (AE_OK); } @@ -390,7 +224,7 @@ AcpiGetFirmwareTable ( UINT32 j; - FUNCTION_TRACE ("AcpiGetFirmwareTable"); + ACPI_FUNCTION_TRACE ("AcpiGetFirmwareTable"); /* @@ -432,13 +266,13 @@ AcpiGetFirmwareTable ( } else { - AcpiGbl_RSDP = (void *) (NATIVE_UINT) PhysicalAddress; + AcpiGbl_RSDP = ACPI_PHYSADDR_TO_PTR (PhysicalAddress); } /* * The signature and checksum must both be correct */ - if (STRNCMP ((NATIVE_CHAR *) AcpiGbl_RSDP, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) + if (ACPI_STRNCMP ((NATIVE_CHAR *) AcpiGbl_RSDP, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0) { /* Nope, BAD Signature */ @@ -446,7 +280,7 @@ AcpiGetFirmwareTable ( goto Cleanup; } - if (AcpiTbChecksum (AcpiGbl_RSDP, RSDP_CHECKSUM_LENGTH) != 0) + if (AcpiTbChecksum (AcpiGbl_RSDP, ACPI_RSDP_CHECKSUM_LENGTH) != 0) { /* Nope, BAD Checksum */ @@ -455,12 +289,11 @@ AcpiGetFirmwareTable ( } } - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "RSDP located at %p, RSDT physical=%8.8X%8.8X \n", - AcpiGbl_RSDP, HIDWORD(AcpiGbl_RSDP->RsdtPhysicalAddress), - LODWORD(AcpiGbl_RSDP->RsdtPhysicalAddress))); - + AcpiGbl_RSDP, + ACPI_HIDWORD (AcpiGbl_RSDP->RsdtPhysicalAddress), + ACPI_LODWORD (AcpiGbl_RSDP->RsdtPhysicalAddress))); /* Get the RSDT and validate it */ @@ -477,7 +310,6 @@ AcpiGetFirmwareTable ( goto Cleanup; } - /* Get the number of table pointers within the RSDT */ TableCount = AcpiTbGetTableCount (AcpiGbl_RSDP, RsdtPtr); @@ -493,7 +325,8 @@ AcpiGetFirmwareTable ( if (AcpiGbl_RSDP->Revision < 2) { - PhysicalAddress = ((RSDT_DESCRIPTOR *) RsdtPtr)->TableOffsetEntry[i]; + PhysicalAddress = (ACPI_PHYSICAL_ADDRESS) + ((RSDT_DESCRIPTOR *) RsdtPtr)->TableOffsetEntry[i]; } else { @@ -511,7 +344,7 @@ AcpiGetFirmwareTable ( /* Compare table signatures and table instance */ - if (!STRNCMP ((char *) TablePtr, Signature, STRLEN (Signature))) + if (!ACPI_STRNCMP ((char *) TablePtr, Signature, ACPI_STRLEN (Signature))) { /* An instance of the table was found */ @@ -548,3 +381,225 @@ Cleanup: } +/* TBD: Move to a new file */ + +#ifndef _IA16 + +/******************************************************************************* + * + * FUNCTION: AcpiFindRootPointer + * + * PARAMETERS: **RsdpPhysicalAddress - Where to place the RSDP address + * Flags - Logical/Physical addressing + * + * RETURN: Status, Physical address of the RSDP + * + * DESCRIPTION: Find the RSDP + * + ******************************************************************************/ + +ACPI_STATUS +AcpiFindRootPointer ( + UINT32 Flags, + ACPI_PHYSICAL_ADDRESS *RsdpPhysicalAddress) +{ + ACPI_TABLE_DESC TableInfo; + ACPI_STATUS Status; + + + ACPI_FUNCTION_TRACE ("AcpiFindRootPointer"); + + + /* Get the RSDP */ + + Status = AcpiTbFindRsdp (&TableInfo, Flags); + if (ACPI_FAILURE (Status)) + { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "RSDP structure not found\n")); + return_ACPI_STATUS (AE_NO_ACPI_TABLES); + } + + *RsdpPhysicalAddress = TableInfo.PhysicalAddress; + return_ACPI_STATUS (AE_OK); +} + + +/******************************************************************************* + * + * 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) +{ + UINT32 Offset; + UINT8 *MemRover; + + + ACPI_FUNCTION_TRACE ("TbScanMemoryForRsdp"); + + + /* Search from given start addr for the requested length */ + + for (Offset = 0, MemRover = StartAddress; + Offset < Length; + Offset += RSDP_SCAN_STEP, MemRover += RSDP_SCAN_STEP) + { + + /* The signature and checksum must both be correct */ + + if (ACPI_STRNCMP ((NATIVE_CHAR *) MemRover, + RSDP_SIG, sizeof (RSDP_SIG)-1) == 0 && + AcpiTbChecksum (MemRover, ACPI_RSDP_CHECKSUM_LENGTH) == 0) + { + /* If so, we have found the RSDP */ + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO, + "RSDP located at physical address %p\n",MemRover)); + return_PTR (MemRover); + } + } + + /* Searched entire block, no RSDP was found */ + + ACPI_DEBUG_PRINT ((ACPI_DB_INFO,"Searched entire block, no RSDP was found.\n")); + return_PTR (NULL); +} + + +/******************************************************************************* + * + * FUNCTION: AcpiTbFindRsdp + * + * PARAMETERS: *TableInfo - Where the table info is returned + * Flags - Current memory mode (logical vs. + * physical addressing) + * + * RETURN: Status + * + * DESCRIPTION: Search lower 1Mbyte of memory for the root system descriptor + * pointer structure. If it is found, set *RSDP to point to it. + * + * NOTE: The RSDP must be either in the first 1K of the Extended + * BIOS Data Area or between E0000 and FFFFF (ACPI 1.0 section + * 5.2.2; assertion #421). + * + ******************************************************************************/ + +ACPI_STATUS +AcpiTbFindRsdp ( + ACPI_TABLE_DESC *TableInfo, + UINT32 Flags) +{ + UINT8 *TablePtr; + UINT8 *MemRover; + UINT64 PhysAddr; + ACPI_STATUS Status = AE_OK; + + + ACPI_FUNCTION_TRACE ("TbFindRsdp"); + + + /* + * Scan supports either 1) Logical addressing or 2) Physical addressing + */ + if ((Flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING) + { + /* + * 1) Search EBDA (low memory) paragraphs + */ + Status = AcpiOsMapMemory ((UINT64) LO_RSDP_WINDOW_BASE, LO_RSDP_WINDOW_SIZE, + (void **) &TablePtr); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + MemRover = AcpiTbScanMemoryForRsdp (TablePtr, LO_RSDP_WINDOW_SIZE); + AcpiOsUnmapMemory (TablePtr, LO_RSDP_WINDOW_SIZE); + + if (MemRover) + { + /* Found it, return the physical address */ + + PhysAddr = LO_RSDP_WINDOW_BASE; + PhysAddr += (MemRover - TablePtr); + + TableInfo->PhysicalAddress = PhysAddr; + return_ACPI_STATUS (AE_OK); + } + + /* + * 2) Search upper memory: 16-byte boundaries in E0000h-F0000h + */ + Status = AcpiOsMapMemory ((UINT64) HI_RSDP_WINDOW_BASE, HI_RSDP_WINDOW_SIZE, + (void **) &TablePtr); + if (ACPI_FAILURE (Status)) + { + return_ACPI_STATUS (Status); + } + + MemRover = AcpiTbScanMemoryForRsdp (TablePtr, HI_RSDP_WINDOW_SIZE); + AcpiOsUnmapMemory (TablePtr, HI_RSDP_WINDOW_SIZE); + + if (MemRover) + { + /* Found it, return the physical address */ + + PhysAddr = HI_RSDP_WINDOW_BASE; + PhysAddr += (MemRover - TablePtr); + + TableInfo->PhysicalAddress = PhysAddr; + return_ACPI_STATUS (AE_OK); + } + } + + /* + * Physical addressing + */ + else + { + /* + * 1) Search EBDA (low memory) paragraphs + */ + MemRover = AcpiTbScanMemoryForRsdp (ACPI_PHYSADDR_TO_PTR (LO_RSDP_WINDOW_BASE), + LO_RSDP_WINDOW_SIZE); + if (MemRover) + { + /* Found it, return the physical address */ + + TableInfo->PhysicalAddress = ACPI_TO_INTEGER (MemRover); + return_ACPI_STATUS (AE_OK); + } + + /* + * 2) Search upper memory: 16-byte boundaries in E0000h-F0000h + */ + MemRover = AcpiTbScanMemoryForRsdp (ACPI_PHYSADDR_TO_PTR (HI_RSDP_WINDOW_BASE), + HI_RSDP_WINDOW_SIZE); + if (MemRover) + { + /* Found it, return the physical address */ + + TableInfo->PhysicalAddress = ACPI_TO_INTEGER (MemRover); + return_ACPI_STATUS (AE_OK); + } + } + + /* RSDP signature was not found */ + + return_ACPI_STATUS (AE_NOT_FOUND); +} + +#endif + |
