/*
 * Map a table at a given offset into the crashdump map.  It first
 * maps the header to determine the table length and then maps the
 * entire table.
 */
static void *
map_table(vm_paddr_t pa, int offset, const char *sig)
{
	ACPI_TABLE_HEADER *header;
	vm_offset_t length;
	void *table;

	header = table_map(pa, offset, sizeof(ACPI_TABLE_HEADER));
	if (strncmp(header->Signature, sig, ACPI_NAME_SIZE) != 0) {
		table_unmap(header, sizeof(ACPI_TABLE_HEADER));
		return (NULL);
	}
	length = header->Length;
	table_unmap(header, sizeof(ACPI_TABLE_HEADER));
	table = table_map(pa, offset, length);
	if (ACPI_FAILURE(AcpiTbChecksum(table, length))) {
		if (bootverbose)
			printf("ACPI: Failed checksum for table %s\n", sig);
#if (ACPI_CHECKSUM_ABORT)
		table_unmap(table, length);
		return (NULL);
#endif
	}
	return (table);
}

void *
acpi_find_table(const char *sig)
{
	ACPI_PHYSICAL_ADDRESS rsdp_ptr;
	ACPI_TABLE_RSDP *rsdp;
	ACPI_TABLE_XSDT *xsdt;
	ACPI_TABLE_HEADER *table;
	UINT64 addr;
	u_int i, count;

	if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
		return (NULL);

	rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
	xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);

	count = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
	    xsdt->TableOffsetEntry;

	for (i = 0; i < count; i++) {
		addr = xsdt->TableOffsetEntry[i];
		table = (ACPI_TABLE_HEADER *)IA64_PHYS_TO_RR7(addr);

		if (strncmp(table->Signature, sig, ACPI_NAME_SIZE) != 0)
			continue;
		if (ACPI_FAILURE(AcpiTbChecksum((void *)table, table->Length)))
			continue;

		return (table);
	}

	return (NULL);
}

void
ExInitializeAcpiTables (
    void)
{

    /* Setup RSDP */

    Rsdp->RsdtPhysicalAddress = (UINT32) ACPI_TO_INTEGER (RsdtCode);
    Rsdp->XsdtPhysicalAddress = (UINT64) ACPI_TO_INTEGER (XsdtCode);

    /* RSDT and XSDT */

    Rsdt->TableOffsetEntry[0] = (UINT32) ACPI_TO_INTEGER (FadtCode);
    Xsdt->TableOffsetEntry[0] = (UINT64) ACPI_TO_INTEGER (FadtCode);

    /* FADT */

    Fadt->Facs = 0;
    Fadt->Dsdt = 0;
    Fadt->XFacs = (UINT64) ACPI_TO_INTEGER (FacsCode);
    Fadt->XDsdt = (UINT64) ACPI_TO_INTEGER (DsdtCode);

    /* Set new checksums for the modified tables */

    Rsdp->Checksum = 0;
    Rsdp->Checksum = (UINT8) -AcpiTbChecksum (
        (void *) RsdpCode, ACPI_RSDP_CHECKSUM_LENGTH);

    Rsdt->Header.Checksum = 0;
    Rsdt->Header.Checksum = (UINT8) -AcpiTbChecksum (
        (void *) Rsdt, Rsdt->Header.Length);

    Xsdt->Header.Checksum = 0;
    Xsdt->Header.Checksum =  (UINT8) -AcpiTbChecksum (
        (void *) Xsdt, Xsdt->Header.Length);

    Fadt->Header.Checksum = 0;
    Fadt->Header.Checksum =  (UINT8) -AcpiTbChecksum (
        (void *) Fadt, Fadt->Header.Length);
}

static void
DtSum (
    DT_SUBTABLE             *Subtable,
    void                    *Context,
    void                    *ReturnValue)
{
    UINT8                   Checksum;
    UINT8                   *Sum = ReturnValue;


    Checksum = AcpiTbChecksum (Subtable->Buffer, Subtable->Length);
    *Sum = (UINT8) (*Sum + Checksum);
}

static ACPI_STATUS
AcpiTbValidateRsdp (
    ACPI_TABLE_RSDP         *Rsdp)
{
    ACPI_FUNCTION_ENTRY ();


    /*
     * 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_STRNCMP ((char *) Rsdp, ACPI_SIG_RSDP,
            sizeof (ACPI_SIG_RSDP)-1) != 0)
    {
        /* 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);
}

/*
 * Count the number of local SAPIC entries in the APIC table. Every enabled
 * entry corresponds to a processor.
 */
int
ia64_count_cpus(void)
{
	ACPI_PHYSICAL_ADDRESS rsdp_ptr;
	ACPI_MADT_LOCAL_SAPIC *entry;
	ACPI_TABLE_MADT *table;
	ACPI_TABLE_RSDP *rsdp;
	ACPI_TABLE_XSDT *xsdt;
	char *end, *p;
	int cpus, t, tables;

	if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
		return (0);

	rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
	xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);

	tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
	    xsdt->TableOffsetEntry;

	cpus = 0;

	for (t = 0; t < tables; t++) {
		table = (ACPI_TABLE_MADT *)
		    IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);

		if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
		    ACPI_NAME_SIZE) != 0 ||
		    ACPI_FAILURE(AcpiTbChecksum((void *)table,
			table->Header.Length)))
			continue;

		end = (char *)table + table->Header.Length;
		p = (char *)(table + 1);
		while (p < end) {
			entry = (ACPI_MADT_LOCAL_SAPIC *)p;

			if (entry->Header.Type == ACPI_MADT_TYPE_LOCAL_SAPIC &&
			    (entry->LapicFlags & ACPI_MADT_ENABLED))
				cpus++;

			p += entry->Header.Length;
		}
	}

	return (cpus);
}

ACPI_STATUS
AcpiTbVerifyChecksum (
    ACPI_TABLE_HEADER       *Table,
    UINT32                  Length)
{
    UINT8                   Checksum;


    /*
     * FACS/S3PT:
     * They are the odd tables, have no standard ACPI header and no checksum
     */

    if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_S3PT) ||
        ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_FACS))
    {
        return (AE_OK);
    }

    /* Compute the checksum on the table */

    Checksum = AcpiTbChecksum (ACPI_CAST_PTR (UINT8, Table), Length);

    /* Checksum ok? (should be zero) */

    if (Checksum)
    {
        ACPI_BIOS_WARNING ((AE_INFO,
            "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
            "should be 0x%2.2X",
            Table->Signature, Table->Checksum,
            (UINT8) (Table->Checksum - Checksum)));

#if (ACPI_CHECKSUM_ABORT)
        return (AE_BAD_CHECKSUM);
#endif
    }

    return (AE_OK);
}

static void
AeInitializeTableHeader (
    ACPI_TABLE_HEADER       *Header,
    char                    *Signature,
    UINT32                  Length)
{

    ACPI_MOVE_NAME (Header->Signature, Signature);
    Header->Length = Length;

    Header->OemRevision = 0x1001;
    strncpy (Header->OemId, "Intel", ACPI_OEM_ID_SIZE);
    strncpy (Header->OemTableId, "AcpiExec", ACPI_OEM_TABLE_ID_SIZE);
    strncpy (Header->AslCompilerId, "INTL", ACPI_NAME_SIZE);
    Header->AslCompilerRevision = ACPI_CA_VERSION;

    /* Set the checksum, must set to zero first */

    Header->Checksum = 0;
    Header->Checksum = (UINT8) -AcpiTbChecksum (
        (void *) Header, Header->Length);
}

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 += ACPI_RSDP_SCAN_STEP, MemRover += ACPI_RSDP_SCAN_STEP)
    {

        /* The signature and checksum must both be correct */

        if (ACPI_STRNCMP ((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);
}

//.........这里部分代码省略.........
        /* Install the OEM1 table to test LoadTable */

        LocalXSDT->TableOffsetEntry[NextIndex++] = ACPI_PTR_TO_PHYSADDR (&Oem1Code);

        /* Install the OEMx table to test LoadTable */

        LocalXSDT->TableOffsetEntry[NextIndex++] = ACPI_PTR_TO_PHYSADDR (&OemxCode);

         /* Install the ECDT table to test _REG */

        LocalXSDT->TableOffsetEntry[NextIndex++] = ACPI_PTR_TO_PHYSADDR (&EcdtCode);

        /* Install two UEFIs to test multiple table support */

        LocalXSDT->TableOffsetEntry[NextIndex++] = ACPI_PTR_TO_PHYSADDR (&Uefi1Code);
        LocalXSDT->TableOffsetEntry[NextIndex++] = ACPI_PTR_TO_PHYSADDR (&Uefi2Code);
    }

    /* Build an RSDP. Contains a valid XSDT only, no RSDT */

    memset (&LocalRSDP, 0, sizeof (ACPI_TABLE_RSDP));
    ACPI_MAKE_RSDP_SIG (LocalRSDP.Signature);
    memcpy (LocalRSDP.OemId, "Intel", 6);

    LocalRSDP.Revision = 2;
    LocalRSDP.XsdtPhysicalAddress = ACPI_PTR_TO_PHYSADDR (LocalXSDT);
    LocalRSDP.Length = sizeof (ACPI_TABLE_RSDP);

    /* Set checksums for both XSDT and RSDP */

    AeInitializeTableHeader ((void *) LocalXSDT, ACPI_SIG_XSDT, XsdtSize);

    LocalRSDP.Checksum = 0;
    LocalRSDP.Checksum = (UINT8) -AcpiTbChecksum (
        (void *) &LocalRSDP, ACPI_RSDP_CHECKSUM_LENGTH);

    if (!DsdtAddress)
    {
        /* Use the local DSDT because incoming table(s) are all SSDT(s) */

        DsdtAddress = ACPI_PTR_TO_PHYSADDR (LocalDsdtCode);
        DsdtToInstallOverride = ACPI_CAST_PTR (ACPI_TABLE_HEADER, LocalDsdtCode);
    }

    /*
     * Build an FADT. There are three options for the FADT:
     * 1) Incoming external FADT specified on the command line
     * 2) A "hardware reduced" local FADT
     * 3) A fully featured local FADT
     */
    memset (&LocalFADT, 0, sizeof (ACPI_TABLE_FADT));

    if (ExternalFadt)
    {
        /*
         * Use the external FADT, but we must update the DSDT/FACS
         * addresses as well as the checksum
         */
        ExternalFadt->Dsdt = (UINT32) DsdtAddress;
        if (!AcpiGbl_ReducedHardware)
        {
            ExternalFadt->Facs = ACPI_PTR_TO_PHYSADDR (&LocalFACS);
        }

        /*
         * If there room in the FADT for the XDsdt and XFacs 64-bit

/*
 * Return the physical address of the requested table or zero if one
 * is not found.
 */
vm_paddr_t
acpi_find_table(const char *sig)
{
	ACPI_PHYSICAL_ADDRESS rsdp_ptr;
	ACPI_TABLE_RSDP *rsdp;
	ACPI_TABLE_XSDT *xsdt;
	ACPI_TABLE_HEADER *table;
	vm_paddr_t addr;
	int i, count;

	if (resource_disabled("acpi", 0))
		return (0);

	/*
	 * Map in the RSDP.  Since ACPI uses AcpiOsMapMemory() which in turn
	 * calls pmap_mapbios() to find the RSDP, we assume that we can use
	 * pmap_mapbios() to map the RSDP.
	 */
	if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
		return (0);
	rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
	if (rsdp == NULL) {
		if (bootverbose)
			printf("ACPI: Failed to map RSDP\n");
		return (0);
	}

	addr = 0;
	if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
		/*
		 * AcpiOsGetRootPointer only verifies the checksum for
		 * the version 1.0 portion of the RSDP.  Version 2.0 has
		 * an additional checksum that we verify first.
		 */
		if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
			if (bootverbose)
				printf("ACPI: RSDP failed extended checksum\n");
			return (0);
		}
		xsdt = map_table(rsdp->XsdtPhysicalAddress, 2, ACPI_SIG_XSDT);
		if (xsdt == NULL) {
			if (bootverbose)
				printf("ACPI: Failed to map XSDT\n");
			pmap_unmapbios((vm_offset_t)rsdp,
			    sizeof(ACPI_TABLE_RSDP));
			return (0);
		}
		count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
		    sizeof(UINT64);
		for (i = 0; i < count; i++)
			if (probe_table(xsdt->TableOffsetEntry[i], sig)) {
				addr = xsdt->TableOffsetEntry[i];
				break;
			}
		acpi_unmap_table(xsdt);
	}
	pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP));

	if (addr == 0) {
		if (bootverbose)
			printf("ACPI: No %s table found\n", sig);
		return (0);
	}
	if (bootverbose)
		printf("%s: Found table at 0x%jx\n", sig, (uintmax_t)addr);

	/*
	 * Verify that we can map the full table and that its checksum is
	 * correct, etc.
	 */
	table = map_table(addr, 0, sig);
	if (table == NULL)
		return (0);
	acpi_unmap_table(table);

	return (addr);
}

void
ia64_probe_sapics(void)
{
	ACPI_PHYSICAL_ADDRESS rsdp_ptr;
	ACPI_SUBTABLE_HEADER *entry;
	ACPI_TABLE_MADT *table;
	ACPI_TABLE_RSDP *rsdp;
	ACPI_TABLE_XSDT *xsdt;
	char *end, *p;
	int t, tables;

	if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
		return;

	rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr);
	xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress);

	tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) -
	    xsdt->TableOffsetEntry;

	for (t = 0; t < tables; t++) {
		table = (ACPI_TABLE_MADT *)
		    IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[t]);

		if (bootverbose)
			printf("Table '%c%c%c%c' at %p\n",
			    table->Header.Signature[0],
			    table->Header.Signature[1],
			    table->Header.Signature[2],
			    table->Header.Signature[3], table);

		if (strncmp(table->Header.Signature, ACPI_SIG_MADT,
		    ACPI_NAME_SIZE) != 0 ||
		    ACPI_FAILURE(AcpiTbChecksum((void *)table,
		    table->Header.Length)))
			continue;

		/* Save the address of the processor interrupt block. */
		if (bootverbose)
			printf("\tLocal APIC address=0x%x\n", table->Address);
		ia64_lapic_addr = table->Address;

		end = (char *)table + table->Header.Length;
		p = (char *)(table + 1);
		while (p < end) {
			entry = (ACPI_SUBTABLE_HEADER *)p;

			if (bootverbose)
				print_entry(entry);

			switch (entry->Type) {
			case ACPI_MADT_TYPE_IO_SAPIC: {
				ACPI_MADT_IO_SAPIC *sapic =
				    (ACPI_MADT_IO_SAPIC *)entry;
				sapic_create(sapic->Id, sapic->GlobalIrqBase,
				    sapic->Address);
				break;
			}

			case ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE: {
				ACPI_MADT_LOCAL_APIC_OVERRIDE *lapic =
				    (ACPI_MADT_LOCAL_APIC_OVERRIDE *)entry;
				ia64_lapic_addr = lapic->Address;
				break;
			}

#ifdef SMP
			case ACPI_MADT_TYPE_LOCAL_SAPIC: {
				ACPI_MADT_LOCAL_SAPIC *sapic =
				    (ACPI_MADT_LOCAL_SAPIC *)entry;
				if (sapic->LapicFlags & ACPI_MADT_ENABLED)
					cpu_mp_add(sapic->ProcessorId,
					    sapic->Id, sapic->Eid);
				break;
			}
#endif

			default:
				break;
			}

			p += entry->Length;
		}
	}
}

ACPI_STATUS
AcpiGetFirmwareTable (
    ACPI_STRING             Signature,
    UINT32                  Instance,
    UINT32                  Flags,
    ACPI_TABLE_HEADER       **TablePointer)
{
    ACPI_POINTER            RsdpAddress;
    ACPI_POINTER            Address;
    ACPI_STATUS             Status;
    ACPI_TABLE_HEADER       Header;
    ACPI_TABLE_DESC         TableInfo;
    ACPI_TABLE_DESC         RsdtInfo;
    UINT32                  TableCount;
    UINT32                  i;
    UINT32                  j;


    ACPI_FUNCTION_TRACE ("AcpiGetFirmwareTable");


    /*
     * Ensure that at least the table manager is initialized.  We don't
     * require that the entire ACPI subsystem is up for this interface
     */

    /*
     *  If we have a buffer, we must have a length too
     */
    if ((Instance == 0)                 ||
        (!Signature)                    ||
        (!TablePointer))
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    RsdtInfo.Pointer = NULL;

    if (!AcpiGbl_RSDP)
    {
        /* Get the RSDP */

        Status = AcpiOsGetRootPointer (Flags, &RsdpAddress);
        if (ACPI_FAILURE (Status))
        {
            ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "RSDP  not found\n"));
            return_ACPI_STATUS (AE_NO_ACPI_TABLES);
        }

        /* Map and validate the RSDP */

        if ((Flags & ACPI_MEMORY_MODE) == ACPI_LOGICAL_ADDRESSING)
        {
            Status = AcpiOsMapMemory (RsdpAddress.Pointer.Physical, sizeof (RSDP_DESCRIPTOR),
                                        (void **) &AcpiGbl_RSDP);
            if (ACPI_FAILURE (Status))
            {
                return_ACPI_STATUS (Status);
            }
        }
        else
        {
            AcpiGbl_RSDP = RsdpAddress.Pointer.Logical;
        }

        /*
         *  The signature and checksum must both be correct
         */
        if (ACPI_STRNCMP ((char *) AcpiGbl_RSDP, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0)
        {
            /* Nope, BAD Signature */

            return_ACPI_STATUS (AE_BAD_SIGNATURE);
        }

        if (AcpiTbChecksum (AcpiGbl_RSDP, ACPI_RSDP_CHECKSUM_LENGTH) != 0)
        {
            /* Nope, BAD Checksum */

            return_ACPI_STATUS (AE_BAD_CHECKSUM);
        }
    }

    /* Get the RSDT and validate it */

    AcpiTbGetRsdtAddress (&Address);

    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
        "RSDP located at %p, RSDT physical=%8.8X%8.8X \n",
        AcpiGbl_RSDP,
        ACPI_HIDWORD (Address.Pointer.Value),
        ACPI_LODWORD (Address.Pointer.Value)));

    /* Insert ProcessorMode flags */

    Address.PointerType |= Flags;

    Status = AcpiTbGetTable (&Address, &RsdtInfo);
    if (ACPI_FAILURE (Status))
    {
//.........这里部分代码省略.........

static void
AdCreateTableHeader (
    char                    *Filename,
    ACPI_TABLE_HEADER       *Table)
{
    UINT8                   Checksum;


    /* Reset globals for External statements */

    AcpiGbl_NumExternalMethods = 0;
    AcpiGbl_ResolvedExternalMethods = 0;

    /*
     * Print file header and dump original table header
     */
    AdDisassemblerHeader (Filename, ACPI_IS_AML_TABLE);

    AcpiOsPrintf (" * Original Table Header:\n");
    AcpiOsPrintf (" *     Signature        \"%4.4s\"\n",    Table->Signature);
    AcpiOsPrintf (" *     Length           0x%8.8X (%u)\n", Table->Length, Table->Length);

    /* Print and validate the revision */

    AcpiOsPrintf (" *     Revision         0x%2.2X",      Table->Revision);

    switch (Table->Revision)
    {
    case 0:

        AcpiOsPrintf (" **** Invalid Revision");
        break;

    case 1:

        /* Revision of DSDT controls the ACPI integer width */

        if (ACPI_COMPARE_NAME (Table->Signature, ACPI_SIG_DSDT))
        {
            AcpiOsPrintf (" **** 32-bit table (V1), no 64-bit math support");
        }
        break;

    default:

        break;
    }

    /* Print and validate the table checksum */

    AcpiOsPrintf ("\n *     Checksum         0x%2.2X",        Table->Checksum);

    Checksum = AcpiTbChecksum (ACPI_CAST_PTR (UINT8, Table), Table->Length);
    if (Checksum)
    {
        AcpiOsPrintf (" **** Incorrect checksum, should be 0x%2.2X",
            (UINT8) (Table->Checksum - Checksum));
    }

    AcpiOsPrintf ("\n");
    AcpiOsPrintf (" *     OEM ID           \"%.6s\"\n",     Table->OemId);
    AcpiOsPrintf (" *     OEM Table ID     \"%.8s\"\n",     Table->OemTableId);
    AcpiOsPrintf (" *     OEM Revision     0x%8.8X (%u)\n", Table->OemRevision, Table->OemRevision);
    AcpiOsPrintf (" *     Compiler ID      \"%.4s\"\n",     Table->AslCompilerId);
    AcpiOsPrintf (" *     Compiler Version 0x%8.8X (%u)\n", Table->AslCompilerRevision, Table->AslCompilerRevision);
    AcpiOsPrintf (" */\n");

    /*
     * Open the ASL definition block.
     *
     * Note: the AMLFilename string is left zero-length in order to just let
     * the compiler create it when the disassembled file is compiled. This
     * makes it easier to rename the disassembled ASL file if needed.
     */
    AcpiOsPrintf (
        "DefinitionBlock (\"\", \"%4.4s\", %hu, \"%.6s\", \"%.8s\", 0x%8.8X)\n",
        Table->Signature, Table->Revision,
        Table->OemId, Table->OemTableId, Table->OemRevision);
}

ACPI_STATUS
AeBuildLocalTables (
    UINT32                  TableCount,
    AE_TABLE_DESC           *TableList)
{
    ACPI_PHYSICAL_ADDRESS   DsdtAddress = 0;
    UINT32                  XsdtSize;
    AE_TABLE_DESC           *NextTable;
    UINT32                  NextIndex;
    ACPI_TABLE_FADT         *ExternalFadt = NULL;


    /*
     * Update the table count. For DSDT, it is not put into the XSDT. For
     * FADT, this is already accounted for since we usually install a
     * local FADT.
     */
    NextTable = TableList;
    while (NextTable)
    {
        if (ACPI_COMPARE_NAME (NextTable->Table->Signature, ACPI_SIG_DSDT) ||
            ACPI_COMPARE_NAME (NextTable->Table->Signature, ACPI_SIG_FADT))
        {
            TableCount--;
        }
        NextTable = NextTable->Next;
    }

    XsdtSize = BASE_XSDT_SIZE + (TableCount * sizeof (UINT64));

    /* Build an XSDT */

    LocalXSDT = AcpiOsAllocate (XsdtSize);
    if (!LocalXSDT)
    {
        return (AE_NO_MEMORY);
    }

    ACPI_MEMSET (LocalXSDT, 0, XsdtSize);
    ACPI_MOVE_NAME (LocalXSDT->Header.Signature, ACPI_SIG_XSDT);
    LocalXSDT->Header.Length = XsdtSize;
    LocalXSDT->Header.Revision = 1;

    LocalXSDT->TableOffsetEntry[0] = ACPI_PTR_TO_PHYSADDR (&LocalFADT);

    /*
     * Install the user tables. The DSDT must be installed in the FADT.
     * All other tables are installed directly into the XSDT.
     */
    NextIndex = BASE_XSDT_TABLES;
    NextTable = TableList;
    while (NextTable)
    {
        /*
         * Incoming DSDT or FADT are special cases. All other tables are
         * just immediately installed into the XSDT.
         */
        if (ACPI_COMPARE_NAME (NextTable->Table->Signature, ACPI_SIG_DSDT))
        {
            if (DsdtAddress)
            {
                printf ("Already found a DSDT, only one allowed\n");
                return (AE_ALREADY_EXISTS);
            }

            /* The incoming user table is a DSDT */

            DsdtAddress = ACPI_PTR_TO_PHYSADDR (NextTable->Table);
        }
        else if (ACPI_COMPARE_NAME (NextTable->Table->Signature, ACPI_SIG_FADT))
        {
            ExternalFadt = ACPI_CAST_PTR (ACPI_TABLE_FADT, NextTable->Table);
            LocalXSDT->TableOffsetEntry[2] = ACPI_PTR_TO_PHYSADDR (NextTable->Table);
        }
        else
        {
            /* Install the table in the XSDT */

            LocalXSDT->TableOffsetEntry[NextIndex] = ACPI_PTR_TO_PHYSADDR (NextTable->Table);
            NextIndex++;
        }

        NextTable = NextTable->Next;
    }

    /* Build an RSDP */

    ACPI_MEMSET (&LocalRSDP, 0, sizeof (ACPI_TABLE_RSDP));
    ACPI_MAKE_RSDP_SIG (LocalRSDP.Signature);
    ACPI_MEMCPY (LocalRSDP.OemId, "I_TEST", 6);
    LocalRSDP.Revision = 2;
    LocalRSDP.XsdtPhysicalAddress = ACPI_PTR_TO_PHYSADDR (LocalXSDT);
    LocalRSDP.Length = sizeof (ACPI_TABLE_XSDT);

    /* Set checksums for both XSDT and RSDP */

    LocalXSDT->Header.Checksum = (UINT8) -AcpiTbChecksum (
        (void *) LocalXSDT, LocalXSDT->Header.Length);
    LocalRSDP.Checksum = (UINT8) -AcpiTbChecksum (
        (void *) &LocalRSDP, ACPI_RSDP_CHECKSUM_LENGTH);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        {
            ExternalFadt =
                ACPI_CAST_PTR (ACPI_TABLE_FADT, NextTable->Table);
            LocalXSDT->TableOffsetEntry[0] =
                ACPI_PTR_TO_PHYSADDR (NextTable->Table);
        }
        else
        {
            /* Install the table in the XSDT */

            LocalXSDT->TableOffsetEntry[TableCount - NextIndex + 1] =
                ACPI_PTR_TO_PHYSADDR (NextTable->Table);
            NextIndex++;
        }

        NextTable = NextTable->Next;
    }

    /* Build an RSDP. Contains a valid XSDT only, no RSDT */

    memset (&LocalRSDP, 0, sizeof (ACPI_TABLE_RSDP));
    ACPI_MAKE_RSDP_SIG (LocalRSDP.Signature);
    memcpy (LocalRSDP.OemId, "Intel", 6);

    LocalRSDP.Revision = 2;
    LocalRSDP.XsdtPhysicalAddress = ACPI_PTR_TO_PHYSADDR (LocalXSDT);
    LocalRSDP.Length = sizeof (ACPI_TABLE_XSDT);

    /* Set checksums for both XSDT and RSDP */

    AnInitializeTableHeader ((void *) LocalXSDT, ACPI_SIG_XSDT, XsdtSize);

    LocalRSDP.Checksum = 0;
    LocalRSDP.Checksum = (UINT8) -AcpiTbChecksum (
        (void *) &LocalRSDP, ACPI_RSDP_CHECKSUM_LENGTH);

    if (!DsdtAddress)
    {
        return (AE_SUPPORT);
    }

    /*
     * Build an FADT. There are two options for the FADT:
     * 1) Incoming external FADT specified on the command line
     * 2) A fully featured local FADT
     */
    memset (&LocalFADT, 0, sizeof (ACPI_TABLE_FADT));

    if (ExternalFadt)
    {
        /*
         * Use the external FADT, but we must update the DSDT/FACS
         * addresses as well as the checksum
         */
        ExternalFadt->Dsdt = (UINT32) DsdtAddress;
        ExternalFadt->Facs = ACPI_PTR_TO_PHYSADDR (&LocalFACS);

        /*
         * If there room in the FADT for the XDsdt and XFacs 64-bit
         * pointers, use them.
         */
        if (ExternalFadt->Header.Length > ACPI_PTR_DIFF (
            &ExternalFadt->XDsdt, ExternalFadt))
        {
            ExternalFadt->Dsdt = 0;
            ExternalFadt->Facs = 0;