static ACPI_STATUS
AcpiTbLoadNamespace (
void)
{
ACPI_STATUS Status;
UINT32 i;
ACPI_TABLE_HEADER *NewDsdt;
ACPI_FUNCTION_TRACE (TbLoadNamespace);
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
/*
* Load the namespace. The DSDT is required, but any SSDT and
* PSDT tables are optional. Verify the DSDT.
*/
if (!AcpiGbl_RootTableList.CurrentTableCount ||
!ACPI_COMPARE_NAME (
&(AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Signature),
ACPI_SIG_DSDT) ||
ACPI_FAILURE (AcpiTbVerifyTable (
&AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT])))
{
Status = AE_NO_ACPI_TABLES;
goto UnlockAndExit;
}
/*
* Save the DSDT pointer for simple access. This is the mapped memory
* address. We must take care here because the address of the .Tables
* array can change dynamically as tables are loaded at run-time. Note:
* .Pointer field is not validated until after call to AcpiTbVerifyTable.
*/
AcpiGbl_DSDT = AcpiGbl_RootTableList.Tables[ACPI_TABLE_INDEX_DSDT].Pointer;
/*
* Optionally copy the entire DSDT to local memory (instead of simply
* mapping it.) There are some BIOSs that corrupt or replace the original
* DSDT, creating the need for this option. Default is FALSE, do not copy
* the DSDT.
*/
if (AcpiGbl_CopyDsdtLocally)
{
NewDsdt = AcpiTbCopyDsdt (ACPI_TABLE_INDEX_DSDT);
if (NewDsdt)
{
AcpiGbl_DSDT = NewDsdt;
}
}
/*
* Save the original DSDT header for detection of table corruption
* and/or replacement of the DSDT from outside the OS.
*/
ACPI_MEMCPY (&AcpiGbl_OriginalDsdtHeader, AcpiGbl_DSDT,
sizeof (ACPI_TABLE_HEADER));
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
/* Load and parse tables */
Status = AcpiNsLoadTable (ACPI_TABLE_INDEX_DSDT, AcpiGbl_RootNode);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
for (i = 2; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
{
if ((!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature),
ACPI_SIG_SSDT) &&
!ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature),
ACPI_SIG_PSDT)) ||
ACPI_FAILURE (AcpiTbVerifyTable (
&AcpiGbl_RootTableList.Tables[i])))
{
continue;
}
/* Skip SSDT when it is overriden with DSDT */
if (ACPI_COMPARE_NAME (&(AcpiGbl_RootTableList.Tables[i].Signature),
ACPI_SIG_SSDT) &&
(AcpiGbl_RootTableList.Tables[i].Flags &
ACPI_TABLE_ORIGIN_OVERRIDE))
{
continue;
}
/* Ignore errors while loading tables, get as many as possible */
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
(void) AcpiNsLoadTable (i, AcpiGbl_RootNode);
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
}
ACPI_DEBUG_PRINT ((ACPI_DB_INIT, "ACPI Tables successfully acquired\n"));
UnlockAndExit:
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiTbLoadNamespace (
void)
{
ACPI_STATUS Status;
UINT32 i;
ACPI_TABLE_HEADER *NewDsdt;
ACPI_TABLE_DESC *Table;
UINT32 TablesLoaded = 0;
UINT32 TablesFailed = 0;
ACPI_FUNCTION_TRACE (TbLoadNamespace);
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
/*
* Load the namespace. The DSDT is required, but any SSDT and
* PSDT tables are optional. Verify the DSDT.
*/
Table = &AcpiGbl_RootTableList.Tables[AcpiGbl_DsdtIndex];
if (!AcpiGbl_RootTableList.CurrentTableCount ||
!ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_DSDT) ||
ACPI_FAILURE (AcpiTbValidateTable (Table)))
{
Status = AE_NO_ACPI_TABLES;
goto UnlockAndExit;
}
/*
* Save the DSDT pointer for simple access. This is the mapped memory
* address. We must take care here because the address of the .Tables
* array can change dynamically as tables are loaded at run-time. Note:
* .Pointer field is not validated until after call to AcpiTbValidateTable.
*/
AcpiGbl_DSDT = Table->Pointer;
/*
* Optionally copy the entire DSDT to local memory (instead of simply
* mapping it.) There are some BIOSs that corrupt or replace the original
* DSDT, creating the need for this option. Default is FALSE, do not copy
* the DSDT.
*/
if (AcpiGbl_CopyDsdtLocally)
{
NewDsdt = AcpiTbCopyDsdt (AcpiGbl_DsdtIndex);
if (NewDsdt)
{
AcpiGbl_DSDT = NewDsdt;
}
}
/*
* Save the original DSDT header for detection of table corruption
* and/or replacement of the DSDT from outside the OS.
*/
memcpy (&AcpiGbl_OriginalDsdtHeader, AcpiGbl_DSDT,
sizeof (ACPI_TABLE_HEADER));
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
/* Load and parse tables */
Status = AcpiNsLoadTable (AcpiGbl_DsdtIndex, AcpiGbl_RootNode);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "[DSDT] table load failed"));
TablesFailed++;
}
else
{
TablesLoaded++;
}
/* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
{
Table = &AcpiGbl_RootTableList.Tables[i];
if (!AcpiGbl_RootTableList.Tables[i].Address ||
(!ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_SSDT) &&
!ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_PSDT) &&
!ACPI_COMPARE_NAME (Table->Signature.Ascii, ACPI_SIG_OSDT)) ||
ACPI_FAILURE (AcpiTbValidateTable (Table)))
{
continue;
}
/* Ignore errors while loading tables, get as many as possible */
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
Status = AcpiNsLoadTable (i, AcpiGbl_RootNode);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status, "(%4.4s:%8.8s) while loading table",
Table->Signature.Ascii, Table->Pointer->OemTableId));
TablesFailed++;
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_INIT,
"Table [%4.4s:%8.8s] (id FF) - Table namespace load failed\n\n",
Table->Signature.Ascii, Table->Pointer->OemTableId));
}
else
{
TablesLoaded++;
}
(void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);
}
if (!TablesFailed)
{
ACPI_INFO ((
"%u ACPI AML tables successfully acquired and loaded\n",
TablesLoaded));
}
else
{
ACPI_ERROR ((AE_INFO,
"%u table load failures, %u successful",
TablesFailed, TablesLoaded));
/* Indicate at least one failure */
Status = AE_CTRL_TERMINATE;
}
UnlockAndExit:
(void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
return_ACPI_STATUS (Status);
}