C++ ACPI_BIOS_ERROR函數代碼示例

ACPI_STATUS
AcpiTbVerifyTempTable (
    ACPI_TABLE_DESC         *TableDesc,
    char                    *Signature)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (TbVerifyTempTable);


    /* Validate the table */

    Status = AcpiTbValidateTempTable (TableDesc);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* If a particular signature is expected (DSDT/FACS), it must match */

    if (Signature &&
        !ACPI_COMPARE_NAME (&TableDesc->Signature, Signature))
    {
        ACPI_BIOS_ERROR ((AE_INFO,
            "Invalid signature 0x%X for ACPI table, expected [%s]",
            TableDesc->Signature.Integer, Signature));
        Status = AE_BAD_SIGNATURE;
        goto InvalidateAndExit;
    }

    /* Verify the checksum */

    if (AcpiGbl_VerifyTableChecksum)
    {
        Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY,
                "%4.4s 0x%8.8X%8.8X"
                " Attempted table install failed",
                AcpiUtValidAcpiName (TableDesc->Signature.Ascii) ?
                    TableDesc->Signature.Ascii : "????",
                ACPI_FORMAT_UINT64 (TableDesc->Address)));

            goto InvalidateAndExit;
        }
    }

    return_ACPI_STATUS (AE_OK);

InvalidateAndExit:
    AcpiTbInvalidateTable (TableDesc);
    return_ACPI_STATUS (Status);
}

acpi_status
acpi_tb_verify_temp_table(struct acpi_table_desc *table_desc, char *signature)
{
	acpi_status status = AE_OK;

	ACPI_FUNCTION_TRACE(tb_verify_temp_table);

	/* Validate the table */

	status = acpi_tb_validate_temp_table(table_desc);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/* If a particular signature is expected (DSDT/FACS), it must match */

	if (signature && !ACPI_COMPARE_NAME(&table_desc->signature, signature)) {
		ACPI_BIOS_ERROR((AE_INFO,
				 "Invalid signature 0x%X for ACPI table, expected [%s]",
				 table_desc->signature.integer, signature));
		status = AE_BAD_SIGNATURE;
		goto invalidate_and_exit;
	}

	/* Verify the checksum */

	if (acpi_gbl_verify_table_checksum) {
		status =
		    acpi_tb_verify_checksum(table_desc->pointer,
					    table_desc->length);
		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
					"%4.4s 0x%8.8X%8.8X"
					" Attempted table install failed",
					acpi_ut_valid_nameseg(table_desc->
							      signature.
							      ascii) ?
					table_desc->signature.ascii : "????",
					ACPI_FORMAT_UINT64(table_desc->
							   address)));

			goto invalidate_and_exit;
		}
	}

	return_ACPI_STATUS(AE_OK);

invalidate_and_exit:
	acpi_tb_invalidate_table(table_desc);
	return_ACPI_STATUS(status);
}

void
AcpiTbCheckDsdtHeader (
    void)
{

    /* Compare original length and checksum to current values */

    if (AcpiGbl_OriginalDsdtHeader.Length != AcpiGbl_DSDT->Length ||
        AcpiGbl_OriginalDsdtHeader.Checksum != AcpiGbl_DSDT->Checksum)
    {
        ACPI_BIOS_ERROR ((AE_INFO,
            "The DSDT has been corrupted or replaced - "
            "old, new headers below"));
        AcpiTbPrintTableHeader (0, &AcpiGbl_OriginalDsdtHeader);
        AcpiTbPrintTableHeader (0, AcpiGbl_DSDT);

        /* Disable further error messages */

        AcpiGbl_OriginalDsdtHeader.Length = AcpiGbl_DSDT->Length;
        AcpiGbl_OriginalDsdtHeader.Checksum = AcpiGbl_DSDT->Checksum;
    }
}

void acpi_tb_check_dsdt_header(void)
{

	/* Compare original length and checksum to current values */

	if (acpi_gbl_original_dsdt_header.length != acpi_gbl_DSDT->length ||
	    acpi_gbl_original_dsdt_header.checksum != acpi_gbl_DSDT->checksum) {
		ACPI_BIOS_ERROR((AE_INFO,
				 "The DSDT has been corrupted or replaced - "
				 "old, new headers below"));
		acpi_tb_print_table_header(0, &acpi_gbl_original_dsdt_header);
		acpi_tb_print_table_header(0, acpi_gbl_DSDT);

		ACPI_ERROR((AE_INFO,
			    "Please send DMI info to [email protected]\n"
			    "If system does not work as expected, please boot with acpi=copy_dsdt"));

		/* Disable further error messages */

		acpi_gbl_original_dsdt_header.length = acpi_gbl_DSDT->length;
		acpi_gbl_original_dsdt_header.checksum =
		    acpi_gbl_DSDT->checksum;
	}
}

ACPI_STATUS
AcpiTbParseRootTable (
    ACPI_PHYSICAL_ADDRESS   RsdpAddress)
{
    ACPI_TABLE_RSDP         *Rsdp;
    UINT32                  TableEntrySize;
    UINT32                  i;
    UINT32                  TableCount;
    ACPI_TABLE_HEADER       *Table;
    ACPI_PHYSICAL_ADDRESS   Address;
    UINT32                  Length;
    UINT8                   *TableEntry;
    ACPI_STATUS             Status;
    UINT32                  TableIndex;


    ACPI_FUNCTION_TRACE (TbParseRootTable);


    /* Map the entire RSDP and extract the address of the RSDT or XSDT */

    Rsdp = AcpiOsMapMemory (RsdpAddress, sizeof (ACPI_TABLE_RSDP));
    if (!Rsdp)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    AcpiTbPrintTableHeader (RsdpAddress,
        ACPI_CAST_PTR (ACPI_TABLE_HEADER, Rsdp));

    /* Use XSDT if present and not overridden. Otherwise, use RSDT */

    if ((Rsdp->Revision > 1) &&
        Rsdp->XsdtPhysicalAddress &&
        !AcpiGbl_DoNotUseXsdt)
    {
        /*
         * RSDP contains an XSDT (64-bit physical addresses). We must use
         * the XSDT if the revision is > 1 and the XSDT pointer is present,
         * as per the ACPI specification.
         */
        Address = (ACPI_PHYSICAL_ADDRESS) Rsdp->XsdtPhysicalAddress;
        TableEntrySize = ACPI_XSDT_ENTRY_SIZE;
    }
    else
    {
        /* Root table is an RSDT (32-bit physical addresses) */

        Address = (ACPI_PHYSICAL_ADDRESS) Rsdp->RsdtPhysicalAddress;
        TableEntrySize = ACPI_RSDT_ENTRY_SIZE;
    }

    /*
     * It is not possible to map more than one entry in some environments,
     * so unmap the RSDP here before mapping other tables
     */
    AcpiOsUnmapMemory (Rsdp, sizeof (ACPI_TABLE_RSDP));

    /* Map the RSDT/XSDT table header to get the full table length */

    Table = AcpiOsMapMemory (Address, sizeof (ACPI_TABLE_HEADER));
    if (!Table)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    AcpiTbPrintTableHeader (Address, Table);

    /*
     * Validate length of the table, and map entire table.
     * Minimum length table must contain at least one entry.
     */
    Length = Table->Length;
    AcpiOsUnmapMemory (Table, sizeof (ACPI_TABLE_HEADER));

    if (Length < (sizeof (ACPI_TABLE_HEADER) + TableEntrySize))
    {
        ACPI_BIOS_ERROR ((AE_INFO,
            "Invalid table length 0x%X in RSDT/XSDT", Length));
        return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
    }

    Table = AcpiOsMapMemory (Address, Length);
    if (!Table)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* Validate the root table checksum */

    Status = AcpiTbVerifyChecksum (Table, Length);
    if (ACPI_FAILURE (Status))
    {
        AcpiOsUnmapMemory (Table, Length);
        return_ACPI_STATUS (Status);
    }

    /* Get the number of entries and pointer to first entry */

    TableCount = (UINT32) ((Table->Length - sizeof (ACPI_TABLE_HEADER)) /
//.........這裏部分代碼省略.........

static void
AcpiTbValidateFadt (
    void)
{
    char                    *Name;
    ACPI_GENERIC_ADDRESS    *Address64;
    UINT8                   Length;
    UINT32                  i;


    /*
     * Check for FACS and DSDT address mismatches. An address mismatch between
     * the 32-bit and 64-bit address fields (FIRMWARE_CTRL/X_FIRMWARE_CTRL and
     * DSDT/X_DSDT) would indicate the presence of two FACS or two DSDT tables.
     */
    if (AcpiGbl_FADT.Facs &&
        (AcpiGbl_FADT.XFacs != (UINT64) AcpiGbl_FADT.Facs))
    {
        ACPI_BIOS_WARNING ((AE_INFO,
            "32/64X FACS address mismatch in FADT - "
            "0x%8.8X/0x%8.8X%8.8X, using 32",
            AcpiGbl_FADT.Facs, ACPI_FORMAT_UINT64 (AcpiGbl_FADT.XFacs)));

        AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs;
    }

    if (AcpiGbl_FADT.Dsdt &&
        (AcpiGbl_FADT.XDsdt != (UINT64) AcpiGbl_FADT.Dsdt))
    {
        ACPI_BIOS_WARNING ((AE_INFO,
            "32/64X DSDT address mismatch in FADT - "
            "0x%8.8X/0x%8.8X%8.8X, using 32",
            AcpiGbl_FADT.Dsdt, ACPI_FORMAT_UINT64 (AcpiGbl_FADT.XDsdt)));

        AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt;
    }

    /* If Hardware Reduced flag is set, we are all done */

    if (AcpiGbl_ReducedHardware)
    {
        return;
    }

    /* Examine all of the 64-bit extended address fields (X fields) */

    for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++)
    {
        /*
         * Generate pointer to the 64-bit address, get the register
         * length (width) and the register name
         */
        Address64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS,
                        &AcpiGbl_FADT, FadtInfoTable[i].Address64);
        Length = *ACPI_ADD_PTR (UINT8,
                        &AcpiGbl_FADT, FadtInfoTable[i].Length);
        Name = FadtInfoTable[i].Name;

        /*
         * For each extended field, check for length mismatch between the
         * legacy length field and the corresponding 64-bit X length field.
         */
        if (Address64->Address &&
           (Address64->BitWidth != ACPI_MUL_8 (Length)))
        {
            ACPI_BIOS_WARNING ((AE_INFO,
                "32/64X length mismatch in FADT/%s: %u/%u",
                Name, ACPI_MUL_8 (Length), Address64->BitWidth));
        }

        if (FadtInfoTable[i].Type & ACPI_FADT_REQUIRED)
        {
            /*
             * Field is required (PM1aEvent, PM1aControl, PmTimer).
             * Both the address and length must be non-zero.
             */
            if (!Address64->Address || !Length)
            {
                ACPI_BIOS_ERROR ((AE_INFO,
                    "Required FADT field %s has zero address and/or length: "
                    "0x%8.8X%8.8X/0x%X",
                    Name, ACPI_FORMAT_UINT64 (Address64->Address), Length));
            }
        }
        else if (FadtInfoTable[i].Type & ACPI_FADT_SEPARATE_LENGTH)
        {
            /*
             * Field is optional (PM2Control, GPE0, GPE1) AND has its own
             * length field. If present, both the address and length must
             * be valid.
             */
            if ((Address64->Address && !Length) ||
                (!Address64->Address && Length))
            {
                ACPI_BIOS_WARNING ((AE_INFO,
                    "Optional FADT field %s has zero address or length: "
                    "0x%8.8X%8.8X/0x%X",
                    Name, ACPI_FORMAT_UINT64 (Address64->Address), Length));
            }
        }
//.........這裏部分代碼省略.........

ACPI_STATUS
AcpiTbAddTable (
    ACPI_TABLE_DESC         *TableDesc,
    UINT32                  *TableIndex)
{
    UINT32                  i;
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (TbAddTable);


    if (!TableDesc->Pointer)
    {
        Status = AcpiTbVerifyTable (TableDesc);
        if (ACPI_FAILURE (Status) || !TableDesc->Pointer)
        {
            return_ACPI_STATUS (Status);
        }
    }

    /*
     * Validate the incoming table signature.
     *
     * 1) Originally, we checked the table signature for "SSDT" or "PSDT".
     * 2) We added support for OEMx tables, signature "OEM".
     * 3) Valid tables were encountered with a null signature, so we just
     *    gave up on validating the signature, (05/2008).
     * 4) We encountered non-AML tables such as the MADT, which caused
     *    interpreter errors and kernel faults. So now, we once again allow
     *    only "SSDT", "OEMx", and now, also a null signature. (05/2011).
     */
    if ((TableDesc->Pointer->Signature[0] != 0x00) &&
       (!ACPI_COMPARE_NAME (TableDesc->Pointer->Signature, ACPI_SIG_SSDT)) &&
       (ACPI_STRNCMP (TableDesc->Pointer->Signature, "OEM", 3)))
    {
        ACPI_BIOS_ERROR ((AE_INFO,
            "Table has invalid signature [%4.4s] (0x%8.8X), "
            "must be SSDT or OEMx",
            AcpiUtValidAcpiName (TableDesc->Pointer->Signature) ?
                TableDesc->Pointer->Signature : "????",
            *(UINT32 *) TableDesc->Pointer->Signature));

        return_ACPI_STATUS (AE_BAD_SIGNATURE);
    }

    (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);

    /* Check if table is already registered */

    for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
    {
        if (!AcpiGbl_RootTableList.Tables[i].Pointer)
        {
            Status = AcpiTbVerifyTable (&AcpiGbl_RootTableList.Tables[i]);
            if (ACPI_FAILURE (Status) ||
                !AcpiGbl_RootTableList.Tables[i].Pointer)
            {
                continue;
            }
        }

        /*
         * Check for a table match on the entire table length,
         * not just the header.
         */
        if (TableDesc->Length != AcpiGbl_RootTableList.Tables[i].Length)
        {
            continue;
        }

        if (ACPI_MEMCMP (TableDesc->Pointer,
                AcpiGbl_RootTableList.Tables[i].Pointer,
                AcpiGbl_RootTableList.Tables[i].Length))
        {
            continue;
        }

        /*
         * Note: the current mechanism does not unregister a table if it is
         * dynamically unloaded. The related namespace entries are deleted,
         * but the table remains in the root table list.
         *
         * The assumption here is that the number of different tables that
         * will be loaded is actually small, and there is minimal overhead
         * in just keeping the table in case it is needed again.
         *
         * If this assumption changes in the future (perhaps on large
         * machines with many table load/unload operations), tables will
         * need to be unregistered when they are unloaded, and slots in the
         * root table list should be reused when empty.
         */

        /*
         * Table is already registered.
         * We can delete the table that was passed as a parameter.
         */
        AcpiTbDeleteTable (TableDesc);
        *TableIndex = i;

//.........這裏部分代碼省略.........

ACPI_STATUS
AcpiTbInstallStandardTable (
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT8                   Flags,
    BOOLEAN                 Reload,
    BOOLEAN                 Override,
    UINT32                  *TableIndex)
{
    UINT32                  i;
    ACPI_STATUS             Status = AE_OK;
    ACPI_TABLE_DESC         NewTableDesc;


    ACPI_FUNCTION_TRACE (TbInstallStandardTable);


    /* Acquire a temporary table descriptor for validation */

    Status = AcpiTbAcquireTempTable (&NewTableDesc, Address, Flags);
    if (ACPI_FAILURE (Status))
    {
        ACPI_ERROR ((AE_INFO,
            "Could not acquire table length at %8.8X%8.8X",
            ACPI_FORMAT_UINT64 (Address)));
        return_ACPI_STATUS (Status);
    }

    /*
     * Optionally do not load any SSDTs from the RSDT/XSDT. This can
     * be useful for debugging ACPI problems on some machines.
     */
    if (!Reload &&
        AcpiGbl_DisableSsdtTableInstall &&
        ACPI_COMPARE_NAME (&NewTableDesc.Signature, ACPI_SIG_SSDT))
    {
        ACPI_INFO ((AE_INFO,
            "Ignoring installation of %4.4s at %8.8X%8.8X",
            NewTableDesc.Signature.Ascii, ACPI_FORMAT_UINT64 (Address)));
        goto ReleaseAndExit;
    }

    /* Validate and verify a table before installation */

    Status = AcpiTbVerifyTempTable (&NewTableDesc, NULL);
    if (ACPI_FAILURE (Status))
    {
        goto ReleaseAndExit;
    }

    if (Reload)
    {
        /*
         * Validate the incoming table signature.
         *
         * 1) Originally, we checked the table signature for "SSDT" or "PSDT".
         * 2) We added support for OEMx tables, signature "OEM".
         * 3) Valid tables were encountered with a null signature, so we just
         *    gave up on validating the signature, (05/2008).
         * 4) We encountered non-AML tables such as the MADT, which caused
         *    interpreter errors and kernel faults. So now, we once again allow
         *    only "SSDT", "OEMx", and now, also a null signature. (05/2011).
         */
        if ((NewTableDesc.Signature.Ascii[0] != 0x00) &&
           (!ACPI_COMPARE_NAME (&NewTableDesc.Signature, ACPI_SIG_SSDT)) &&
           (strncmp (NewTableDesc.Signature.Ascii, "OEM", 3)))
        {
            ACPI_BIOS_ERROR ((AE_INFO,
                "Table has invalid signature [%4.4s] (0x%8.8X), "
                "must be SSDT or OEMx",
                AcpiUtValidAcpiName (NewTableDesc.Signature.Ascii) ?
                    NewTableDesc.Signature.Ascii : "????",
                NewTableDesc.Signature.Integer));

            Status = AE_BAD_SIGNATURE;
            goto ReleaseAndExit;
        }

        /* Check if table is already registered */

        for (i = 0; i < AcpiGbl_RootTableList.CurrentTableCount; ++i)
        {
            /*
             * Check for a table match on the entire table length,
             * not just the header.
             */
            if (!AcpiTbCompareTables (&NewTableDesc, i))
            {
                continue;
            }

            /*
             * Note: the current mechanism does not unregister a table if it is
             * dynamically unloaded. The related namespace entries are deleted,
             * but the table remains in the root table list.
             *
             * The assumption here is that the number of different tables that
             * will be loaded is actually small, and there is minimal overhead
             * in just keeping the table in case it is needed again.
             *
             * If this assumption changes in the future (perhaps on large
//.........這裏部分代碼省略.........

acpi_status acpi_find_root_pointer(acpi_size *table_address)
{
	u8 *table_ptr;
	u8 *mem_rover;
	u32 physical_address;

	ACPI_FUNCTION_TRACE(acpi_find_root_pointer);

	/* 1a) Get the location of the Extended BIOS Data Area (EBDA) */

	table_ptr = acpi_os_map_memory((acpi_physical_address)
				       ACPI_EBDA_PTR_LOCATION,
				       ACPI_EBDA_PTR_LENGTH);
	if (!table_ptr) {
		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(&physical_address, table_ptr);

	/* Convert segment part to physical address */

	physical_address <<= 4;
	acpi_os_unmap_memory(table_ptr, ACPI_EBDA_PTR_LENGTH);

	/* EBDA present? */

	if (physical_address > 0x400) {
		/*
		 * 1b) Search EBDA paragraphs (EBDA is required to be a
		 *     minimum of 1K length)
		 */
		table_ptr = acpi_os_map_memory((acpi_physical_address)
					       physical_address,
					       ACPI_EBDA_WINDOW_SIZE);
		if (!table_ptr) {
			ACPI_ERROR((AE_INFO,
				    "Could not map memory at 0x%8.8X for length %u",
				    physical_address, ACPI_EBDA_WINDOW_SIZE));

			return_ACPI_STATUS(AE_NO_MEMORY);
		}

		mem_rover =
		    acpi_tb_scan_memory_for_rsdp(table_ptr,
						 ACPI_EBDA_WINDOW_SIZE);
		acpi_os_unmap_memory(table_ptr, ACPI_EBDA_WINDOW_SIZE);

		if (mem_rover) {

			/* Return the physical address */

			physical_address +=
			    (u32) ACPI_PTR_DIFF(mem_rover, table_ptr);

			*table_address = physical_address;
			return_ACPI_STATUS(AE_OK);
		}
	}

	/*
	 * 2) Search upper memory: 16-byte boundaries in E0000h-FFFFFh
	 */
	table_ptr = acpi_os_map_memory((acpi_physical_address)
				       ACPI_HI_RSDP_WINDOW_BASE,
				       ACPI_HI_RSDP_WINDOW_SIZE);

	if (!table_ptr) {
		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);
	}

	mem_rover =
	    acpi_tb_scan_memory_for_rsdp(table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);
	acpi_os_unmap_memory(table_ptr, ACPI_HI_RSDP_WINDOW_SIZE);

	if (mem_rover) {

		/* Return the physical address */

		physical_address = (u32)
		    (ACPI_HI_RSDP_WINDOW_BASE +
		     ACPI_PTR_DIFF(mem_rover, table_ptr));

		*table_address = physical_address;
		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);
}

//.........這裏部分代碼省略.........
		 * Override: if acpi_gbl_use32_bit_fadt_addresses is TRUE, and:
		 * Address32 non-zero != Address64 non-zero - Warning, copy/use Address32
		 *
		 * Note: space_id is always I/O for 32-bit legacy address fields
		 */
		if (address32) {
			if (!address64->address) {

				/* 64-bit address is zero, use 32-bit address */

				acpi_tb_init_generic_address(address64,
							     ACPI_ADR_SPACE_SYSTEM_IO,
							     *ACPI_ADD_PTR(u8,
									   &acpi_gbl_FADT,
									   fadt_info_table
									   [i].
									   length),
							     (u64)address32,
							     name);
			} else if (address64->address != (u64)address32) {

				/* Address mismatch */

				ACPI_BIOS_WARNING((AE_INFO,
						   "32/64X address mismatch in FADT/%s: "
						   "0x%8.8X/0x%8.8X%8.8X, using %u-bit address",
						   name, address32,
						   ACPI_FORMAT_UINT64
						   (address64->address),
						   acpi_gbl_use32_bit_fadt_addresses
						   ? 32 : 64));

				if (acpi_gbl_use32_bit_fadt_addresses) {

					/* 32-bit address override */

					acpi_tb_init_generic_address(address64,
								     ACPI_ADR_SPACE_SYSTEM_IO,
								     *ACPI_ADD_PTR
								     (u8,
								      &acpi_gbl_FADT,
								      fadt_info_table
								      [i].
								      length),
								     (u64)
								     address32,
								     name);
				}
			}
		}

		/*
		 * For each extended field, check for length mismatch between the
		 * legacy length field and the corresponding 64-bit X length field.
		 * Note: If the legacy length field is > 0xFF bits, ignore this
		 * check. (GPE registers can be larger than the 64-bit GAS structure
		 * can accomodate, 0xFF bits).
		 */
		if (address64->address &&
		    (ACPI_MUL_8(length) <= ACPI_UINT8_MAX) &&
		    (address64->bit_width != ACPI_MUL_8(length))) {
			ACPI_BIOS_WARNING((AE_INFO,
					   "32/64X length mismatch in FADT/%s: %u/%u",
					   name, ACPI_MUL_8(length),
					   address64->bit_width));
		}

		if (fadt_info_table[i].type & ACPI_FADT_REQUIRED) {
			/*
			 * Field is required (Pm1a_event, Pm1a_control).
			 * Both the address and length must be non-zero.
			 */
			if (!address64->address || !length) {
				ACPI_BIOS_ERROR((AE_INFO,
						 "Required FADT field %s has zero address and/or length: "
						 "0x%8.8X%8.8X/0x%X",
						 name,
						 ACPI_FORMAT_UINT64(address64->
								    address),
						 length));
			}
		} else if (fadt_info_table[i].type & ACPI_FADT_SEPARATE_LENGTH) {
			/*
			 * Field is optional (Pm2_control, GPE0, GPE1) AND has its own
			 * length field. If present, both the address and length must
			 * be valid.
			 */
			if ((address64->address && !length) ||
			    (!address64->address && length)) {
				ACPI_BIOS_WARNING((AE_INFO,
						   "Optional FADT field %s has zero address or length: "
						   "0x%8.8X%8.8X/0x%X",
						   name,
						   ACPI_FORMAT_UINT64
						   (address64->address),
						   length));
			}
		}
	}
}

ACPI_STATUS
AcpiTbVerifyTempTable (
    ACPI_TABLE_DESC         *TableDesc,
    char                    *Signature,
    UINT32                  *TableIndex)
{
    ACPI_STATUS             Status = AE_OK;


    ACPI_FUNCTION_TRACE (TbVerifyTempTable);


    /* Validate the table */

    Status = AcpiTbValidateTempTable (TableDesc);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /* If a particular signature is expected (DSDT/FACS), it must match */

    if (Signature &&
        !ACPI_COMPARE_NAME (&TableDesc->Signature, Signature))
    {
        ACPI_BIOS_ERROR ((AE_INFO,
            "Invalid signature 0x%X for ACPI table, expected [%s]",
            TableDesc->Signature.Integer, Signature));
        Status = AE_BAD_SIGNATURE;
        goto InvalidateAndExit;
    }

    if (AcpiGbl_EnableTableValidation)
    {
        /* Verify the checksum */

        Status = AcpiTbVerifyChecksum (TableDesc->Pointer, TableDesc->Length);
        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY,
                "%4.4s 0x%8.8X%8.8X"
                " Attempted table install failed",
                AcpiUtValidNameseg (TableDesc->Signature.Ascii) ?
                    TableDesc->Signature.Ascii : "????",
                ACPI_FORMAT_UINT64 (TableDesc->Address)));

            goto InvalidateAndExit;
        }

        /* Avoid duplications */

        if (TableIndex)
        {
            Status = AcpiTbCheckDuplication (TableDesc, TableIndex);
            if (ACPI_FAILURE (Status))
            {
                if (Status != AE_CTRL_TERMINATE)
                {
                    ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY,
                        "%4.4s 0x%8.8X%8.8X"
                        " Table is duplicated",
                        AcpiUtValidNameseg (TableDesc->Signature.Ascii) ?
                            TableDesc->Signature.Ascii : "????",
                        ACPI_FORMAT_UINT64 (TableDesc->Address)));
                }

                goto InvalidateAndExit;
            }
        }

        TableDesc->Flags |= ACPI_TABLE_IS_VERIFIED;
    }

    return_ACPI_STATUS (Status);

InvalidateAndExit:
    AcpiTbInvalidateTable (TableDesc);
    return_ACPI_STATUS (Status);
}

static void
AcpiTbConvertFadt (
    void)
{
    ACPI_GENERIC_ADDRESS    *Address64;
    UINT32                  Address32;
    UINT32                  i;


    /*
     * Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary.
     * Later code will always use the X 64-bit field.
     */
    if (!AcpiGbl_FADT.XFacs)
    {
        AcpiGbl_FADT.XFacs = (UINT64) AcpiGbl_FADT.Facs;
    }
    if (!AcpiGbl_FADT.XDsdt)
    {
        AcpiGbl_FADT.XDsdt = (UINT64) AcpiGbl_FADT.Dsdt;
    }

    /*
     * For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which
     * should be zero are indeed zero. This will workaround BIOSs that
     * inadvertently place values in these fields.
     *
     * The ACPI 1.0 reserved fields that will be zeroed are the bytes located
     * at offset 45, 55, 95, and the word located at offset 109, 110.
     *
     * Note: The FADT revision value is unreliable. Only the length can be
     * trusted.
     */
    if (AcpiGbl_FADT.Header.Length <= ACPI_FADT_V2_SIZE)
    {
        AcpiGbl_FADT.PreferredProfile = 0;
        AcpiGbl_FADT.PstateControl = 0;
        AcpiGbl_FADT.CstControl = 0;
        AcpiGbl_FADT.BootFlags = 0;
    }

    /*
     * Now we can update the local FADT length to the length of the
     * current FADT version as defined by the ACPI specification.
     * Thus, we will have a common FADT internally.
     */
    AcpiGbl_FADT.Header.Length = sizeof (ACPI_TABLE_FADT);

    /*
     * Expand the ACPI 1.0 32-bit addresses to the ACPI 2.0 64-bit "X"
     * generic address structures as necessary. Later code will always use
     * the 64-bit address structures.
     *
     * March 2009:
     * We now always use the 32-bit address if it is valid (non-null). This
     * is not in accordance with the ACPI specification which states that
     * the 64-bit address supersedes the 32-bit version, but we do this for
     * compatibility with other ACPI implementations. Most notably, in the
     * case where both the 32 and 64 versions are non-null, we use the 32-bit
     * version. This is the only address that is guaranteed to have been
     * tested by the BIOS manufacturer.
     */
    for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++)
    {
        Address32 = *ACPI_ADD_PTR (UINT32,
            &AcpiGbl_FADT, FadtInfoTable[i].Address32);

        Address64 = ACPI_ADD_PTR (ACPI_GENERIC_ADDRESS,
            &AcpiGbl_FADT, FadtInfoTable[i].Address64);

        /*
         * If both 32- and 64-bit addresses are valid (non-zero),
         * they must match.
         */
        if (Address64->Address && Address32 &&
           (Address64->Address != (UINT64) Address32))
        {
            ACPI_BIOS_ERROR ((AE_INFO,
                "32/64X address mismatch in FADT/%s: "
                "0x%8.8X/0x%8.8X%8.8X, using 32",
                FadtInfoTable[i].Name, Address32,
                ACPI_FORMAT_UINT64 (Address64->Address)));
        }

        /* Always use 32-bit address if it is valid (non-null) */

        if (Address32)
        {
            /*
             * Copy the 32-bit address to the 64-bit GAS structure. The
             * Space ID is always I/O for 32-bit legacy address fields
             */
            AcpiTbInitGenericAddress (Address64, ACPI_ADR_SPACE_SYSTEM_IO,
                *ACPI_ADD_PTR (UINT8, &AcpiGbl_FADT, FadtInfoTable[i].Length),
                (UINT64) Address32, FadtInfoTable[i].Name);
        }
    }
}

ACPI_STATUS
AcpiFindRootPointer (
    ACPI_SIZE               *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 = 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 = PhysicalAddress;
        return_ACPI_STATUS (AE_OK);
    }

    /* A valid RSDP was not found */

    ACPI_BIOS_ERROR ((AE_INFO, "A valid RSDP was not found"));
//.........這裏部分代碼省略.........

static void acpi_tb_validate_fadt(void)
{
	char *name;
	struct acpi_generic_address *address64;
	u8 length;
	u32 i;

	/*
	 * Check for FACS and DSDT address mismatches. An address mismatch between
	 * the 32-bit and 64-bit address fields (FIRMWARE_CTRL/X_FIRMWARE_CTRL and
	 * DSDT/X_DSDT) would indicate the presence of two FACS or two DSDT tables.
	 */
	if (acpi_gbl_FADT.facs &&
	    (acpi_gbl_FADT.Xfacs != (u64)acpi_gbl_FADT.facs)) {
		ACPI_BIOS_WARNING((AE_INFO,
				   "32/64X FACS address mismatch in FADT - "
				   "0x%8.8X/0x%8.8X%8.8X, using 32",
				   acpi_gbl_FADT.facs,
				   ACPI_FORMAT_UINT64(acpi_gbl_FADT.Xfacs)));

		acpi_gbl_FADT.Xfacs = (u64)acpi_gbl_FADT.facs;
	}

	if (acpi_gbl_FADT.dsdt &&
	    (acpi_gbl_FADT.Xdsdt != (u64)acpi_gbl_FADT.dsdt)) {
		ACPI_BIOS_WARNING((AE_INFO,
				   "32/64X DSDT address mismatch in FADT - "
				   "0x%8.8X/0x%8.8X%8.8X, using 32",
				   acpi_gbl_FADT.dsdt,
				   ACPI_FORMAT_UINT64(acpi_gbl_FADT.Xdsdt)));

		acpi_gbl_FADT.Xdsdt = (u64)acpi_gbl_FADT.dsdt;
	}

	/* If Hardware Reduced flag is set, we are all done */

	if (acpi_gbl_reduced_hardware) {
		return;
	}

	/* Examine all of the 64-bit extended address fields (X fields) */

	for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
		/*
		 * Generate pointer to the 64-bit address, get the register
		 * length (width) and the register name
		 */
		address64 = ACPI_ADD_PTR(struct acpi_generic_address,
					 &acpi_gbl_FADT,
					 fadt_info_table[i].address64);
		length =
		    *ACPI_ADD_PTR(u8, &acpi_gbl_FADT,
				  fadt_info_table[i].length);
		name = fadt_info_table[i].name;

		/*
		 * For each extended field, check for length mismatch between the
		 * legacy length field and the corresponding 64-bit X length field.
		 */
		if (address64->address &&
		    (address64->bit_width != ACPI_MUL_8(length))) {
			ACPI_BIOS_WARNING((AE_INFO,
					   "32/64X length mismatch in FADT/%s: %u/%u",
					   name, ACPI_MUL_8(length),
					   address64->bit_width));
		}

		if (fadt_info_table[i].type & ACPI_FADT_REQUIRED) {
			/*
			 * Field is required (Pm1a_event, Pm1a_control, pm_timer).
			 * Both the address and length must be non-zero.
			 */
			if (!address64->address || !length) {
				ACPI_BIOS_ERROR((AE_INFO,
						 "Required FADT field %s has zero address and/or length: "
						 "0x%8.8X%8.8X/0x%X",
						 name,
						 ACPI_FORMAT_UINT64(address64->
								    address),
						 length));
			}
		} else if (fadt_info_table[i].type & ACPI_FADT_SEPARATE_LENGTH) {
			/*
			 * Field is optional (Pm2_control, GPE0, GPE1) AND has its own
			 * length field. If present, both the address and length must
			 * be valid.
			 */
			if ((address64->address && !length) ||
			    (!address64->address && length)) {
				ACPI_BIOS_WARNING((AE_INFO,
						   "Optional FADT field %s has zero address or length: "
						   "0x%8.8X%8.8X/0x%X",
						   name,
						   ACPI_FORMAT_UINT64
						   (address64->address),
						   length));
			}
		}
	}
}

static void acpi_tb_convert_fadt(void)
{
	struct acpi_generic_address *address64;
	u32 address32;
	u32 i;

	/*
	 * Expand the 32-bit FACS and DSDT addresses to 64-bit as necessary.
	 * Later code will always use the X 64-bit field. Also, check for an
	 * address mismatch between the 32-bit and 64-bit address fields
	 * (FIRMWARE_CTRL/X_FIRMWARE_CTRL, DSDT/X_DSDT) which would indicate
	 * the presence of two FACS or two DSDT tables.
	 */
	if (!acpi_gbl_FADT.Xfacs) {
		acpi_gbl_FADT.Xfacs = (u64) acpi_gbl_FADT.facs;
	} else if (acpi_gbl_FADT.facs &&
		   (acpi_gbl_FADT.Xfacs != (u64) acpi_gbl_FADT.facs)) {
		ACPI_WARNING((AE_INFO,
		    "32/64 FACS address mismatch in FADT - two FACS tables!"));
	}

	if (!acpi_gbl_FADT.Xdsdt) {
		acpi_gbl_FADT.Xdsdt = (u64) acpi_gbl_FADT.dsdt;
	} else if (acpi_gbl_FADT.dsdt &&
		   (acpi_gbl_FADT.Xdsdt != (u64) acpi_gbl_FADT.dsdt)) {
		ACPI_WARNING((AE_INFO,
		    "32/64 DSDT address mismatch in FADT - two DSDT tables!"));
	}

	/*
	 * For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which
	 * should be zero are indeed zero. This will workaround BIOSs that
	 * inadvertently place values in these fields.
	 *
	 * The ACPI 1.0 reserved fields that will be zeroed are the bytes located
	 * at offset 45, 55, 95, and the word located at offset 109, 110.
	 *
	 * Note: The FADT revision value is unreliable. Only the length can be
	 * trusted.
	 */
	if (acpi_gbl_FADT.header.length <= ACPI_FADT_V2_SIZE) {
		acpi_gbl_FADT.preferred_profile = 0;
		acpi_gbl_FADT.pstate_control = 0;
		acpi_gbl_FADT.cst_control = 0;
		acpi_gbl_FADT.boot_flags = 0;
	}

	/* Update the local FADT table header length */

	acpi_gbl_FADT.header.length = sizeof(struct acpi_table_fadt);

	/*
	 * Expand the ACPI 1.0 32-bit addresses to the ACPI 2.0 64-bit "X"
	 * generic address structures as necessary. Later code will always use
	 * the 64-bit address structures.
	 *
	 * March 2009:
	 * We now always use the 32-bit address if it is valid (non-null). This
	 * is not in accordance with the ACPI specification which states that
	 * the 64-bit address supersedes the 32-bit version, but we do this for
	 * compatibility with other ACPI implementations. Most notably, in the
	 * case where both the 32 and 64 versions are non-null, we use the 32-bit
	 * version. This is the only address that is guaranteed to have been
	 * tested by the BIOS manufacturer.
	 */
	for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) {
		address32 = *ACPI_ADD_PTR(u32,
					  &acpi_gbl_FADT,
					  fadt_info_table[i].address32);

		address64 = ACPI_ADD_PTR(struct acpi_generic_address,
					 &acpi_gbl_FADT,
					 fadt_info_table[i].address64);

		/*
		 * If both 32- and 64-bit addresses are valid (non-zero),
		 * they must match.
		 */
		if (address64->address && address32 &&
		    (address64->address != (u64)address32)) {
			ACPI_BIOS_ERROR((AE_INFO,
					 "32/64X address mismatch in FADT/%s: "
					 "0x%8.8X/0x%8.8X%8.8X, using 32",
					 fadt_info_table[i].name, address32,
					 ACPI_FORMAT_UINT64(address64->
							    address)));
		}

		/* Always use 32-bit address if it is valid (non-null) */

		if (address32) {
			/*
			 * Copy the 32-bit address to the 64-bit GAS structure. The
			 * Space ID is always I/O for 32-bit legacy address fields
			*/
			acpi_tb_init_generic_address(address64,
						     ACPI_ADR_SPACE_SYSTEM_IO,
						     *ACPI_ADD_PTR(u8,
								   &acpi_gbl_FADT,
								   fadt_info_table
//.........這裏部分代碼省略.........