diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
new file mode 100644
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+++ b/include/acpi/acconfig.h
@@ -0,0 +1,217 @@
+/******************************************************************************
+ *
+ * Name: acconfig.h - Global configuration constants
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ *    substantially similar to the "NO WARRANTY" disclaimer below
+ *    ("Disclaimer") and any redistribution must be conditioned upon
+ *    including a substantially similar Disclaimer requirement for further
+ *    binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ *    of any contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#ifndef _ACCONFIG_H
+#define _ACCONFIG_H
+
+
+/******************************************************************************
+ *
+ * Configuration options
+ *
+ *****************************************************************************/
+
+/*
+ * ACPI_DEBUG_OUTPUT    - This switch enables all the debug facilities of the
+ *                        ACPI subsystem.  This includes the DEBUG_PRINT output
+ *                        statements.  When disabled, all DEBUG_PRINT
+ *                        statements are compiled out.
+ *
+ * ACPI_APPLICATION     - Use this switch if the subsystem is going to be run
+ *                        at the application level.
+ *
+ */
+
+/* Version string */
+
+#define ACPI_CA_VERSION                 0x20050309
+
+/*
+ * OS name, used for the _OS object.  The _OS object is essentially obsolete,
+ * but there is a large base of ASL/AML code in existing machines that check
+ * for the string below.  The use of this string usually guarantees that
+ * the ASL will execute down the most tested code path.  Also, there is some
+ * code that will not execute the _OSI method unless _OS matches the string
+ * below.  Therefore, change this string at your own risk.
+ */
+#define ACPI_OS_NAME                    "Microsoft Windows NT"
+
+/* Maximum objects in the various object caches */
+
+#define ACPI_MAX_STATE_CACHE_DEPTH      64          /* State objects */
+#define ACPI_MAX_PARSE_CACHE_DEPTH      96          /* Parse tree objects */
+#define ACPI_MAX_EXTPARSE_CACHE_DEPTH   64          /* Parse tree objects */
+#define ACPI_MAX_OBJECT_CACHE_DEPTH     64          /* Interpreter operand objects */
+#define ACPI_MAX_WALK_CACHE_DEPTH       4           /* Objects for parse tree walks */
+
+/*
+ * Should the subystem abort the loading of an ACPI table if the
+ * table checksum is incorrect?
+ */
+#define ACPI_CHECKSUM_ABORT             FALSE
+
+
+/******************************************************************************
+ *
+ * Subsystem Constants
+ *
+ *****************************************************************************/
+
+/* Version of ACPI supported */
+
+#define ACPI_CA_SUPPORT_LEVEL           3
+
+/* String size constants */
+
+#define ACPI_MAX_STRING_LENGTH          512
+#define ACPI_PATHNAME_MAX               256         /* A full namespace pathname */
+
+/* Maximum count for a semaphore object */
+
+#define ACPI_MAX_SEMAPHORE_COUNT        256
+
+/* Max reference count (for debug only) */
+
+#define ACPI_MAX_REFERENCE_COUNT        0x400
+
+/* Size of cached memory mapping for system memory operation region */
+
+#define ACPI_SYSMEM_REGION_WINDOW_SIZE  4096
+
+
+/******************************************************************************
+ *
+ * ACPI Specification constants (Do not change unless the specification changes)
+ *
+ *****************************************************************************/
+
+/* Number of distinct GPE register blocks and register width */
+
+#define ACPI_MAX_GPE_BLOCKS             2
+#define ACPI_GPE_REGISTER_WIDTH         8
+
+/*
+ * Method info (in WALK_STATE), containing local variables and argumetns
+ */
+#define ACPI_METHOD_NUM_LOCALS          8
+#define ACPI_METHOD_MAX_LOCAL           7
+
+#define ACPI_METHOD_NUM_ARGS            7
+#define ACPI_METHOD_MAX_ARG             6
+
+/* Maximum length of resulting string when converting from a buffer */
+
+#define ACPI_MAX_STRING_CONVERSION      200
+
+/* Length of _HID, _UID, and _CID values */
+
+#define ACPI_DEVICE_ID_LENGTH           0x09
+#define ACPI_MAX_CID_LENGTH             48
+
+/*
+ * Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG
+ */
+#define ACPI_OBJ_NUM_OPERANDS           8
+#define ACPI_OBJ_MAX_OPERAND            7
+
+/* Names within the namespace are 4 bytes long */
+
+#define ACPI_NAME_SIZE                  4
+#define ACPI_PATH_SEGMENT_LENGTH        5           /* 4 chars for name + 1 char for separator */
+#define ACPI_PATH_SEPARATOR             '.'
+
+/* Constants used in searching for the RSDP in low memory */
+
+#define ACPI_EBDA_PTR_LOCATION          0x0000040E     /* Physical Address */
+#define ACPI_EBDA_PTR_LENGTH            2
+#define ACPI_EBDA_WINDOW_SIZE           1024
+#define ACPI_HI_RSDP_WINDOW_BASE        0x000E0000     /* Physical Address */
+#define ACPI_HI_RSDP_WINDOW_SIZE        0x00020000
+#define ACPI_RSDP_SCAN_STEP             16
+
+/* Operation regions */
+
+#define ACPI_NUM_PREDEFINED_REGIONS     8
+#define ACPI_USER_REGION_BEGIN          0x80
+
+/* Maximum space_ids for Operation Regions */
+
+#define ACPI_MAX_ADDRESS_SPACE          255
+
+/* Array sizes.  Used for range checking also */
+
+#define ACPI_NUM_ACCESS_TYPES           6
+#define ACPI_NUM_UPDATE_RULES           3
+#define ACPI_NUM_LOCK_RULES             2
+#define ACPI_NUM_MATCH_OPS              6
+#define ACPI_NUM_OPCODES                256
+#define ACPI_NUM_FIELD_NAMES            2
+
+/* RSDP checksums */
+
+#define ACPI_RSDP_CHECKSUM_LENGTH       20
+#define ACPI_RSDP_XCHECKSUM_LENGTH      36
+
+/* SMBus bidirectional buffer size */
+
+#define ACPI_SMBUS_BUFFER_SIZE          34
+
+/* Number of strings associated with the _OSI reserved method */
+
+#define ACPI_NUM_OSI_STRINGS            10
+
+
+/******************************************************************************
+ *
+ * ACPI AML Debugger
+ *
+ *****************************************************************************/
+
+#define ACPI_DEBUGGER_MAX_ARGS          8  /* Must be max method args + 1 */
+
+#define ACPI_DEBUGGER_COMMAND_PROMPT    '-'
+#define ACPI_DEBUGGER_EXECUTE_PROMPT    '%'
+
+
+#endif /* _ACCONFIG_H */
+