diff options
Diffstat (limited to 'usr/src/uts/intel/io/acpica/tables/tbutils.c')
| -rw-r--r-- | usr/src/uts/intel/io/acpica/tables/tbutils.c | 103 |
1 files changed, 63 insertions, 40 deletions
diff --git a/usr/src/uts/intel/io/acpica/tables/tbutils.c b/usr/src/uts/intel/io/acpica/tables/tbutils.c index bff6540e07..e8b5705e96 100644 --- a/usr/src/uts/intel/io/acpica/tables/tbutils.c +++ b/usr/src/uts/intel/io/acpica/tables/tbutils.c @@ -5,7 +5,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2011, Intel Corp. + * Copyright (C) 2000 - 2012, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -50,6 +50,7 @@ #define _COMPONENT ACPI_TABLES ACPI_MODULE_NAME ("tbutils") + /* Local prototypes */ static void @@ -68,6 +69,7 @@ AcpiTbGetRootTableEntry ( UINT32 TableEntrySize); +#if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: AcpiTbInitializeFacs @@ -88,10 +90,19 @@ AcpiTbInitializeFacs ( ACPI_STATUS Status; + /* If Hardware Reduced flag is set, there is no FACS */ + + if (AcpiGbl_ReducedHardware) + { + AcpiGbl_FACS = NULL; + return (AE_OK); + } + Status = AcpiGetTableByIndex (ACPI_TABLE_INDEX_FACS, ACPI_CAST_INDIRECT_PTR (ACPI_TABLE_HEADER, &AcpiGbl_FACS)); return (Status); } +#endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* @@ -415,7 +426,7 @@ AcpiTbCopyDsdt ( * RETURN: None * * DESCRIPTION: Install an ACPI table into the global data structure. The - * table override mechanism is implemented here to allow the host + * table override mechanism is called to allow the host * OS to replace any table before it is installed in the root * table array. * @@ -427,11 +438,9 @@ AcpiTbInstallTable ( char *Signature, UINT32 TableIndex) { - UINT8 Flags; - ACPI_STATUS Status; - ACPI_TABLE_HEADER *TableToInstall; - ACPI_TABLE_HEADER *MappedTable; - ACPI_TABLE_HEADER *OverrideTable = NULL; + ACPI_TABLE_HEADER *Table; + ACPI_TABLE_HEADER *FinalTable; + ACPI_TABLE_DESC *TableDesc; if (!Address) @@ -443,70 +452,84 @@ AcpiTbInstallTable ( /* Map just the table header */ - MappedTable = AcpiOsMapMemory (Address, sizeof (ACPI_TABLE_HEADER)); - if (!MappedTable) + Table = AcpiOsMapMemory (Address, sizeof (ACPI_TABLE_HEADER)); + if (!Table) { + ACPI_ERROR ((AE_INFO, "Could not map memory for table [%s] at %p", + Signature, ACPI_CAST_PTR (void, Address))); return; } /* If a particular signature is expected (DSDT/FACS), it must match */ if (Signature && - !ACPI_COMPARE_NAME (MappedTable->Signature, Signature)) + !ACPI_COMPARE_NAME (Table->Signature, Signature)) { ACPI_ERROR ((AE_INFO, "Invalid signature 0x%X for ACPI table, expected [%s]", - *ACPI_CAST_PTR (UINT32, MappedTable->Signature), Signature)); + *ACPI_CAST_PTR (UINT32, Table->Signature), Signature)); goto UnmapAndExit; } /* + * Initialize the table entry. Set the pointer to NULL, since the + * table is not fully mapped at this time. + */ + TableDesc = &AcpiGbl_RootTableList.Tables[TableIndex]; + + TableDesc->Address = Address; + TableDesc->Pointer = NULL; + TableDesc->Length = Table->Length; + TableDesc->Flags = ACPI_TABLE_ORIGIN_MAPPED; + ACPI_MOVE_32_TO_32 (TableDesc->Signature.Ascii, Table->Signature); + + /* * ACPI Table Override: * * Before we install the table, let the host OS override it with a new * one if desired. Any table within the RSDT/XSDT can be replaced, * including the DSDT which is pointed to by the FADT. + * + * NOTE: If the table is overridden, then FinalTable will contain a + * mapped pointer to the full new table. If the table is not overridden, + * or if there has been a physical override, then the table will be + * fully mapped later (in verify table). In any case, we must + * unmap the header that was mapped above. */ - Status = AcpiOsTableOverride (MappedTable, &OverrideTable); - if (ACPI_SUCCESS (Status) && OverrideTable) + FinalTable = AcpiTbTableOverride (Table, TableDesc); + if (!FinalTable) { - ACPI_INFO ((AE_INFO, - "%4.4s @ 0x%p Table override, replaced with:", - MappedTable->Signature, ACPI_CAST_PTR (void, Address))); - - AcpiGbl_RootTableList.Tables[TableIndex].Pointer = OverrideTable; - Address = ACPI_PTR_TO_PHYSADDR (OverrideTable); - - TableToInstall = OverrideTable; - Flags = ACPI_TABLE_ORIGIN_OVERRIDE; - } - else - { - TableToInstall = MappedTable; - Flags = ACPI_TABLE_ORIGIN_MAPPED; + FinalTable = Table; /* There was no override */ } - /* Initialize the table entry */ - - AcpiGbl_RootTableList.Tables[TableIndex].Address = Address; - AcpiGbl_RootTableList.Tables[TableIndex].Length = TableToInstall->Length; - AcpiGbl_RootTableList.Tables[TableIndex].Flags = Flags; - - ACPI_MOVE_32_TO_32 ( - &(AcpiGbl_RootTableList.Tables[TableIndex].Signature), - TableToInstall->Signature); + AcpiTbPrintTableHeader (TableDesc->Address, FinalTable); - AcpiTbPrintTableHeader (Address, TableToInstall); + /* Set the global integer width (based upon revision of the DSDT) */ if (TableIndex == ACPI_TABLE_INDEX_DSDT) { - /* Global integer width is based upon revision of the DSDT */ + AcpiUtSetIntegerWidth (FinalTable->Revision); + } - AcpiUtSetIntegerWidth (TableToInstall->Revision); + /* + * If we have a physical override during this early loading of the ACPI + * tables, unmap the table for now. It will be mapped again later when + * it is actually used. This supports very early loading of ACPI tables, + * before virtual memory is fully initialized and running within the + * host OS. Note: A logical override has the ACPI_TABLE_ORIGIN_OVERRIDE + * flag set and will not be deleted below. + */ + if (FinalTable != Table) + { + AcpiTbDeleteTable (TableDesc); } + UnmapAndExit: - AcpiOsUnmapMemory (MappedTable, sizeof (ACPI_TABLE_HEADER)); + + /* Always unmap the table header that we mapped above */ + + AcpiOsUnmapMemory (Table, sizeof (ACPI_TABLE_HEADER)); } |