Merge branch 'acpica'

* acpica: (30 commits)
  ACPICA: Add new GPE public interface - acpi_mark_gpe_for_wake.
  ACPICA: GPEs: Do not allow enable for GPEs that have no handler(s).
  ACPICA: Fix a regression for deletion of Alias() objects.
  ACPICA: Update version to 20140627
  ACPICA: Tables: Merge DMAR table structure updates
  ACPICA: Hardware: back port of a recursive locking fix
  ACPICA: utprint/oslibcfs: cleanup - no functional change
  ACPICA: Executer: Fix trivial issues in acpi_get_serial_access_bytes()
  ACPICA: OSL: Update acpidump to reduce source code differences
  ACPICA: acpidump: Reduce freopen() invocations to improve portability
  ACPICA: acpidump: Replace file IOs with new APIs to improve portability
  ACPICA: acpidump: Remove exit() from generic layer to improve portability
  ACPICA: acpidump: Add memory/string OSL usage to improve portability
  ACPICA: Common: Enhance acpi_getopt() to improve portability
  ACPICA: Common: Enhance cm_get_file_size() to improve portability
  ACPICA: Application: Enhance ACPI_USAGE_xxx/ACPI_OPTION with acpi_os_printf() to improve portability
  ACPICA: Utilities: Introduce acpi_log_error() to improve portability
  ACPICA: Utilities: Add formatted printing APIs
  ACPICA: OSL: Add portable file IO to improve portability
  ACPICA: OSL: Clean up acpi_os_printf()/acpi_os_vprintf() stubs
  ...

10 files changed, 1744 insertions, 167 deletions

diff --git a/tools/power/acpi/Makefile b/tools/power/acpi/Makefile
index e5a3c4be2a10..3d1537b93c64 100644
--- a/tools/power/acpi/Makefile
+++ b/tools/power/acpi/Makefile
@@ -108,13 +108,18 @@ DUMP_OBJS = \
 	apmain.o\
 	osunixdir.o\
 	osunixmap.o\
+	osunixxf.o\
 	tbprint.o\
 	tbxfroot.o\
 	utbuffer.o\
+	utdebug.o\
 	utexcep.o\
+	utglobal.o\
 	utmath.o\
+	utprint.o\
 	utstring.o\
 	utxferror.o\
+	oslibcfs.o\
 	oslinuxtbl.o\
 	cmfsize.o\
 	getopt.o
diff --git a/tools/power/acpi/common/cmfsize.c b/tools/power/acpi/common/cmfsize.c
index 5140e5edae1f..f4b953354ff7 100644
--- a/tools/power/acpi/common/cmfsize.c
+++ b/tools/power/acpi/common/cmfsize.c
@@ -58,44 +58,46 @@ ACPI_MODULE_NAME("cmfsize")
  * RETURN:      File Size. On error, -1 (ACPI_UINT32_MAX)
  *
  * DESCRIPTION: Get the size of a file. Uses seek-to-EOF. File must be open.
- *              Does not disturb the current file pointer. Uses perror for
- *              error messages.
+ *              Does not disturb the current file pointer.
  *
  ******************************************************************************/
-u32 cm_get_file_size(FILE * file)
+u32 cm_get_file_size(ACPI_FILE file)
 {
 	long file_size;
 	long current_offset;
+	acpi_status status;
 
 	/* Save the current file pointer, seek to EOF to obtain file size */
 
-	current_offset = ftell(file);
+	current_offset = acpi_os_get_file_offset(file);
 	if (current_offset < 0) {
 		goto offset_error;
 	}
 
-	if (fseek(file, 0, SEEK_END)) {
+	status = acpi_os_set_file_offset(file, 0, ACPI_FILE_END);
+	if (ACPI_FAILURE(status)) {
 		goto seek_error;
 	}
 
-	file_size = ftell(file);
+	file_size = acpi_os_get_file_offset(file);
 	if (file_size < 0) {
 		goto offset_error;
 	}
 
 	/* Restore original file pointer */
 
-	if (fseek(file, current_offset, SEEK_SET)) {
+	status = acpi_os_set_file_offset(file, current_offset, ACPI_FILE_BEGIN);
+	if (ACPI_FAILURE(status)) {
 		goto seek_error;
 	}
 
 	return ((u32)file_size);
 
 offset_error:
-	perror("Could not get file offset");
+	acpi_log_error("Could not get file offset");
 	return (ACPI_UINT32_MAX);
 
 seek_error:
-	perror("Could not seek file");
+	acpi_log_error("Could not set file offset");
 	return (ACPI_UINT32_MAX);
 }
diff --git a/tools/power/acpi/common/getopt.c b/tools/power/acpi/common/getopt.c
index a302f52e4fd3..2f0f34a36db4 100644
--- a/tools/power/acpi/common/getopt.c
+++ b/tools/power/acpi/common/getopt.c
@@ -51,14 +51,12 @@
  *    "f|"      - Option has required single-char sub-options
  */
 
-#include <stdio.h>
-#include <string.h>
 #include <acpi/acpi.h>
 #include "accommon.h"
 #include "acapps.h"
 
 #define ACPI_OPTION_ERROR(msg, badchar) \
-	if (acpi_gbl_opterr) {fprintf (stderr, "%s%c\n", msg, badchar);}
+	if (acpi_gbl_opterr) {acpi_log_error ("%s%c\n", msg, badchar);}
 
 int acpi_gbl_opterr = 1;
 int acpi_gbl_optind = 1;
@@ -113,7 +111,7 @@ int acpi_getopt_argument(int argc, char **argv)
  * PARAMETERS:  argc, argv          - from main
  *              opts                - options info list
  *
- * RETURN:      Option character or EOF
+ * RETURN:      Option character or ACPI_OPT_END
  *
  * DESCRIPTION: Get the next option
  *
@@ -128,10 +126,10 @@ int acpi_getopt(int argc, char **argv, char *opts)
 		if (acpi_gbl_optind >= argc ||
 		    argv[acpi_gbl_optind][0] != '-' ||
 		    argv[acpi_gbl_optind][1] == '\0') {
-			return (EOF);
-		} else if (strcmp(argv[acpi_gbl_optind], "--") == 0) {
+			return (ACPI_OPT_END);
+		} else if (ACPI_STRCMP(argv[acpi_gbl_optind], "--") == 0) {
 			acpi_gbl_optind++;
-			return (EOF);
+			return (ACPI_OPT_END);
 		}
 	}
 
@@ -142,7 +140,7 @@ int acpi_getopt(int argc, char **argv, char *opts)
 	/* Make sure that the option is legal */
 
 	if (current_char == ':' ||
-	    (opts_ptr = strchr(opts, current_char)) == NULL) {
+	    (opts_ptr = ACPI_STRCHR(opts, current_char)) == NULL) {
 		ACPI_OPTION_ERROR("Illegal option: -", current_char);
 
 		if (argv[acpi_gbl_optind][++current_char_ptr] == '\0') {
diff --git a/tools/power/acpi/os_specific/service_layers/oslibcfs.c b/tools/power/acpi/os_specific/service_layers/oslibcfs.c
new file mode 100644
index 000000000000..c13ff9c51d74
--- /dev/null
+++ b/tools/power/acpi/os_specific/service_layers/oslibcfs.c
@@ -0,0 +1,214 @@
+/******************************************************************************
+ *
+ * Module Name: oslibcfs - C library OSL for file I/O
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2014, Intel Corp.
+ * 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.
+ */
+
+#include <acpi/acpi.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#define _COMPONENT          ACPI_OS_SERVICES
+ACPI_MODULE_NAME("oslibcfs")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_os_open_file
+ *
+ * PARAMETERS:  path                - File path
+ *              modes               - File operation type
+ *
+ * RETURN:      File descriptor.
+ *
+ * DESCRIPTION: Open a file for reading (ACPI_FILE_READING) or/and writing
+ *              (ACPI_FILE_WRITING).
+ *
+ ******************************************************************************/
+ACPI_FILE acpi_os_open_file(const char *path, u8 modes)
+{
+	ACPI_FILE file;
+	u32 i = 0;
+	char modes_str[4];
+
+	if (modes & ACPI_FILE_READING) {
+		modes_str[i++] = 'r';
+	}
+	if (modes & ACPI_FILE_WRITING) {
+		modes_str[i++] = 'w';
+	}
+	if (modes & ACPI_FILE_BINARY) {
+		modes_str[i++] = 'b';
+	}
+
+	modes_str[i++] = '\0';
+
+	file = fopen(path, modes_str);
+	if (!file) {
+		perror("Could not open file");
+	}
+
+	return (file);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_os_close_file
+ *
+ * PARAMETERS:  file                - An open file descriptor
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Close a file opened via acpi_os_open_file.
+ *
+ ******************************************************************************/
+
+void acpi_os_close_file(ACPI_FILE file)
+{
+	fclose(file);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_os_read_file
+ *
+ * PARAMETERS:  file                - An open file descriptor
+ *              buffer              - Data buffer
+ *              size                - Data block size
+ *              count               - Number of data blocks
+ *
+ * RETURN:      Number of bytes actually read.
+ *
+ * DESCRIPTION: Read from a file.
+ *
+ ******************************************************************************/
+
+int
+acpi_os_read_file(ACPI_FILE file, void *buffer, acpi_size size, acpi_size count)
+{
+	int length;
+
+	length = fread(buffer, size, count, file);
+	if (length < 0) {
+		perror("Error reading file");
+	}
+
+	return (length);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_os_write_file
+ *
+ * PARAMETERS:  file                - An open file descriptor
+ *              buffer              - Data buffer
+ *              size                - Data block size
+ *              count               - Number of data blocks
+ *
+ * RETURN:      Number of bytes actually written.
+ *
+ * DESCRIPTION: Write to a file.
+ *
+ ******************************************************************************/
+
+int
+acpi_os_write_file(ACPI_FILE file,
+		   void *buffer, acpi_size size, acpi_size count)
+{
+	int length;
+
+	length = fwrite(buffer, size, count, file);
+	if (length < 0) {
+		perror("Error writing file");
+	}
+
+	return (length);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_os_get_file_offset
+ *
+ * PARAMETERS:  file                - An open file descriptor
+ *
+ * RETURN:      Current file pointer position.
+ *
+ * DESCRIPTION: Get current file offset.
+ *
+ ******************************************************************************/
+
+long acpi_os_get_file_offset(ACPI_FILE file)
+{
+	long offset;
+
+	offset = ftell(file);
+	return (offset);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_os_set_file_offset
+ *
+ * PARAMETERS:  file                - An open file descriptor
+ *              offset              - New file offset
+ *              from                - From begin/end of file
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Set current file offset.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_os_set_file_offset(ACPI_FILE file, long offset, u8 from)
+{
+	int ret = 0;
+
+	if (from == ACPI_FILE_BEGIN) {
+		ret = fseek(file, offset, SEEK_SET);
+	}
+	if (from == ACPI_FILE_END) {
+		ret = fseek(file, offset, SEEK_END);
+	}
+
+	if (ret < 0) {
+		return (AE_ERROR);
+	} else {
+		return (AE_OK);
+	}
+}
diff --git a/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c b/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c
index 28c52008e854..0dc2485dedf5 100644
--- a/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c
+++ b/tools/power/acpi/os_specific/service_layers/oslinuxtbl.c
@@ -77,6 +77,9 @@ osl_map_table(acpi_size address,
 
 static void osl_unmap_table(struct acpi_table_header *table);
 
+static acpi_physical_address
+osl_find_rsdp_via_efi_by_keyword(FILE * file, const char *keyword);
+
 static acpi_physical_address osl_find_rsdp_via_efi(void);
 
 static acpi_status osl_load_rsdp(void);
@@ -417,6 +420,38 @@ acpi_os_get_table_by_index(u32 index,
 
 /******************************************************************************
  *
+ * FUNCTION:    osl_find_rsdp_via_efi_by_keyword
+ *
+ * PARAMETERS:  keyword         - Character string indicating ACPI GUID version
+ *                                in the EFI table
+ *
+ * RETURN:      RSDP address if found
+ *
+ * DESCRIPTION: Find RSDP address via EFI using keyword indicating the ACPI
+ *              GUID version.
+ *
+ *****************************************************************************/
+
+static acpi_physical_address
+osl_find_rsdp_via_efi_by_keyword(FILE * file, const char *keyword)
+{
+	char buffer[80];
+	unsigned long long address = 0;
+	char format[32];
+
+	snprintf(format, 32, "%s=%s", keyword, "%llx");
+	fseek(file, 0, SEEK_SET);
+	while (fgets(buffer, 80, file)) {
+		if (sscanf(buffer, format, &address) == 1) {
+			break;
+		}
+	}
+
+	return ((acpi_physical_address) (address));
+}
+
+/******************************************************************************
+ *
  * FUNCTION:    osl_find_rsdp_via_efi
  *
  * PARAMETERS:  None
@@ -430,20 +465,19 @@ acpi_os_get_table_by_index(u32 index,
 static acpi_physical_address osl_find_rsdp_via_efi(void)
 {
 	FILE *file;
-	char buffer[80];
-	unsigned long address = 0;
+	acpi_physical_address address = 0;
 
 	file = fopen(EFI_SYSTAB, "r");
 	if (file) {
-		while (fgets(buffer, 80, file)) {
-			if (sscanf(buffer, "ACPI20=0x%lx", &address) == 1) {
-				break;
-			}
+		address = osl_find_rsdp_via_efi_by_keyword(file, "ACPI20");
+		if (!address) {
+			address =
+			    osl_find_rsdp_via_efi_by_keyword(file, "ACPI");
 		}
 		fclose(file);
 	}
 
-	return ((acpi_physical_address) (address));
+	return (address);
 }
 
 /******************************************************************************
diff --git a/tools/power/acpi/os_specific/service_layers/osunixxf.c b/tools/power/acpi/os_specific/service_layers/osunixxf.c
new file mode 100644
index 000000000000..60b58cd18410
--- /dev/null
+++ b/tools/power/acpi/os_specific/service_layers/osunixxf.c
@@ -0,0 +1,1311 @@
+/******************************************************************************
+ *
+ * Module Name: osunixxf - UNIX OSL interfaces
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2014, Intel Corp.
+ * 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.
+ */
+
+/*
+ * These interfaces are required in order to compile the ASL compiler and the
+ * various ACPICA tools under Linux or other Unix-like system.
+ */
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "amlcode.h"
+#include "acparser.h"
+#include "acdebug.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <sys/time.h>
+#include <semaphore.h>
+#include <pthread.h>
+#include <errno.h>
+
+#define _COMPONENT          ACPI_OS_SERVICES
+ACPI_MODULE_NAME("osunixxf")
+
+u8 acpi_gbl_debug_timeout = FALSE;
+
+/* Upcalls to acpi_exec */
+
+void
+ae_table_override(struct acpi_table_header *existing_table,
+		  struct acpi_table_header **new_table);
+
+typedef void *(*PTHREAD_CALLBACK) (void *);
+
+/* Buffer used by acpi_os_vprintf */
+
+#define ACPI_VPRINTF_BUFFER_SIZE    512
+#define _ASCII_NEWLINE              '\n'
+
+/* Terminal support for acpi_exec only */
+
+#ifdef ACPI_EXEC_APP
+#include <termios.h>
+
+struct termios original_term_attributes;
+int term_attributes_were_set = 0;
+
+acpi_status acpi_ut_read_line(char *buffer, u32 buffer_length, u32 *bytes_read);
+
+static void os_enter_line_edit_mode(void);
+
+static void os_exit_line_edit_mode(void);
+
+/******************************************************************************
+ *
+ * FUNCTION:    os_enter_line_edit_mode, os_exit_line_edit_mode
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Enter/Exit the raw character input mode for the terminal.
+ *
+ * Interactive line-editing support for the AML debugger. Used with the
+ * common/acgetline module.
+ *
+ * readline() is not used because of non-portability. It is not available
+ * on all systems, and if it is, often the package must be manually installed.
+ *
+ * Therefore, we use the POSIX tcgetattr/tcsetattr and do the minimal line
+ * editing that we need in acpi_os_get_line.
+ *
+ * If the POSIX tcgetattr/tcsetattr interfaces are unavailable, these
+ * calls will also work:
+ *     For os_enter_line_edit_mode: system ("stty cbreak -echo")
+ *     For os_exit_line_edit_mode: system ("stty cooked echo")
+ *
+ *****************************************************************************/
+
+static void os_enter_line_edit_mode(void)
+{
+	struct termios local_term_attributes;
+
+	/* Get and keep the original attributes */
+
+	if (tcgetattr(STDIN_FILENO, &original_term_attributes)) {
+		fprintf(stderr, "Could not get terminal attributes!\n");
+		return;
+	}
+
+	/* Set the new attributes to enable raw character input */
+
+	memcpy(&local_term_attributes, &original_term_attributes,
+	       sizeof(struct termios));
+
+	local_term_attributes.c_lflag &= ~(ICANON | ECHO);
+	local_term_attributes.c_cc[VMIN] = 1;
+	local_term_attributes.c_cc[VTIME] = 0;
+
+	if (tcsetattr(STDIN_FILENO, TCSANOW, &local_term_attributes)) {
+		fprintf(stderr, "Could not set terminal attributes!\n");
+		return;
+	}
+
+	term_attributes_were_set = 1;
+}
+
+static void os_exit_line_edit_mode(void)
+{
+
+	if (!term_attributes_were_set) {
+		return;
+	}
+
+	/* Set terminal attributes back to the original values */
+
+	if (tcsetattr(STDIN_FILENO, TCSANOW, &original_term_attributes)) {
+		fprintf(stderr, "Could not restore terminal attributes!\n");
+	}
+}
+
+#else
+
+/* These functions are not needed for other ACPICA utilities */
+
+#define os_enter_line_edit_mode()
+#define os_exit_line_edit_mode()
+#endif
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_initialize, acpi_os_terminate
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initialize and terminate this module.
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_initialize(void)
+{
+	acpi_status status;
+
+	acpi_gbl_output_file = stdout;
+
+	os_enter_line_edit_mode();
+
+	status = acpi_os_create_lock(&acpi_gbl_print_lock);
+	if (ACPI_FAILURE(status)) {
+		return (status);
+	}
+
+	return (AE_OK);
+}
+
+acpi_status acpi_os_terminate(void)
+{
+
+	os_exit_line_edit_mode();
+	return (AE_OK);
+}
+
+#ifndef ACPI_USE_NATIVE_RSDP_POINTER
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_get_root_pointer
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      RSDP physical address
+ *
+ * DESCRIPTION: Gets the ACPI root pointer (RSDP)
+ *
+ *****************************************************************************/
+
+acpi_physical_address acpi_os_get_root_pointer(void)
+{
+
+	return (0);
+}
+#endif
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_predefined_override
+ *
+ * PARAMETERS:  init_val            - Initial value of the predefined object
+ *              new_val             - The new value for the object
+ *
+ * RETURN:      Status, pointer to value. Null pointer returned if not
+ *              overriding.
+ *
+ * DESCRIPTION: Allow the OS to override predefined names
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_predefined_override(const struct acpi_predefined_names * init_val,
+			    acpi_string * new_val)
+{
+
+	if (!init_val || !new_val) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	*new_val = NULL;
+	return (AE_OK);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_table_override
+ *
+ * PARAMETERS:  existing_table      - Header of current table (probably
+ *                                    firmware)
+ *              new_table           - Where an entire new table is returned.
+ *
+ * RETURN:      Status, pointer to new table. Null pointer returned if no
+ *              table is available to override
+ *
+ * DESCRIPTION: Return a different version of a table if one is available
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_table_override(struct acpi_table_header * existing_table,
+		       struct acpi_table_header ** new_table)
+{
+
+	if (!existing_table || !new_table) {
+		return (AE_BAD_PARAMETER);
+	}
+
+	*new_table = NULL;
+
+#ifdef ACPI_EXEC_APP
+
+	ae_table_override(existing_table, new_table);
+	return (AE_OK);
+#else
+
+	return (AE_NO_ACPI_TABLES);
+#endif
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_physical_table_override
+ *
+ * PARAMETERS:  existing_table      - Header of current table (probably firmware)
+ *              new_address         - Where new table address is returned
+ *                                    (Physical address)
+ *              new_table_length    - Where new table length is returned
+ *
+ * RETURN:      Status, address/length of new table. Null pointer returned
+ *              if no table is available to override.
+ *
+ * DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
+ *
+ *****************************************************************************/
+
+acpi_status
+acpi_os_physical_table_override(struct acpi_table_header * existing_table,
+				acpi_physical_address * new_address,
+				u32 *new_table_length)
+{
+
+	return (AE_SUPPORT);
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_redirect_output
+ *
+ * PARAMETERS:  destination         - An open file handle/pointer
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Causes redirect of acpi_os_printf and acpi_os_vprintf
+ *
+ *****************************************************************************/
+
+void acpi_os_redirect_output(void *destination)
+{
+
+	acpi_gbl_output_file = destination;
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_printf
+ *
+ * PARAMETERS:  fmt, ...            - Standard printf format
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Formatted output. Note: very similar to acpi_os_vprintf
+ *              (performance), changes should be tracked in both functions.
+ *
+ *****************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE acpi_os_printf(const char *fmt, ...)
+{
+	va_list args;
+	u8 flags;
+
+	flags = acpi_gbl_db_output_flags;
+	if (flags & ACPI_DB_REDIRECTABLE_OUTPUT) {
+
+		/* Output is directable to either a file (if open) or the console */
+
+		if (acpi_gbl_debug_file) {
+
+			/* Output file is open, send the output there */
+
+			va_start(args, fmt);
+			vfprintf(acpi_gbl_debug_file, fmt, args);
+			va_end(args);
+		} else {
+			/* No redirection, send output to console (once only!) */
+
+			flags |= ACPI_DB_CONSOLE_OUTPUT;
+		}
+	}
+
+	if (flags & ACPI_DB_CONSOLE_OUTPUT) {
+		va_start(args, fmt);
+		vfprintf(acpi_gbl_output_file, fmt, args);
+		va_end(args);
+	}
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_vprintf
+ *
+ * PARAMETERS:  fmt                 - Standard printf format
+ *              args                - Argument list
+ *
+ * RETURN:      None
+ *
+ * DESCRIPTION: Formatted output with argument list pointer. Note: very
+ *              similar to acpi_os_printf, changes should be tracked in both
+ *              functions.
+ *
+ *****************************************************************************/
+
+void acpi_os_vprintf(const char *fmt, va_list args)
+{
+	u8 flags;
+	char buffer[ACPI_VPRINTF_BUFFER_SIZE];
+
+	/*
+	 * We build the output string in a local buffer because we may be
+	 * outputting the buffer twice. Using vfprintf is problematic because
+	 * some implementations modify the args pointer/structure during
+	 * execution. Thus, we use the local buffer for portability.
+	 *
+	 * Note: Since this module is intended for use by the various ACPICA
+	 * utilities/applications, we can safely declare the buffer on the stack.
+	 * Also, This function is used for relatively small error messages only.
+	 */
+	vsnprintf(buffer, ACPI_VPRINTF_BUFFER_SIZE, fmt, args);
+
+	flags = acpi_gbl_db_output_flags;
+	if (flags & ACPI_DB_REDIRECTABLE_OUTPUT) {
+
+		/* Output is directable to either a file (if open) or the console */
+
+		if (acpi_gbl_debug_file) {
+
+			/* Output file is open, send the output there */
+
+			fputs(buffer, acpi_gbl_debug_file);
+		} else {
+			/* No redirection, send output to console (once only!) */
+
+			flags |= ACPI_DB_CONSOLE_OUTPUT;
+		}
+	}
+
+	if (flags & ACPI_DB_CONSOLE_OUTPUT) {
+		fputs(buffer, acpi_gbl_output_file);
+	}
+}
+
+#ifndef ACPI_EXEC_APP
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_get_line
+ *
+ * PARAMETERS:  buffer              - Where to return the command line
+ *              buffer_length       - Maximum length of Buffer
+ *              bytes_read          - Where the actual byte count is returned
+ *
+ * RETURN:      Status and actual bytes read
+ *
+ * DESCRIPTION: Get the next input line from the terminal. NOTE: For the
+ *              acpi_exec utility, we use the acgetline module instead to
+ *              provide line-editing and history support.
+ *
+ *****************************************************************************/
+
+acpi_status acpi_os_get_line(char *buffer, u32 buffer_length, u32 *bytes_read)
+{
+	int input_char;
+	u32 end_of_line;
+
+	/* Standard acpi_os_get_line for all utilities except acpi_exec */
+
+	for (end_of_line = 0;; end_of_line++) {
+		if (end_of_line >= buffer_length) {
+			return (AE_BUFFER_OVERFLOW);
+		}
+
+		if ((input_char = getchar()) == EOF) {
+			return (AE_ERROR);
+		}
+
+		if (!input_char || input_char == _ASCII_NEWLINE) {
+			break;
+		}
+
+		buffer[end_of_line] = (char)input_char;
+	}
+
+	/* Null terminate the buffer */
+
+	buffer[end_of_line] = 0;
+
+	/* Return the number of bytes in the string */
+
+	if (bytes_read) {
+		*bytes_read = end_of_line;
+	}
+
+	return (AE_OK);
+}
+#endif
+
+#ifndef ACPI_USE_NATIVE_MEMORY_MAPPING
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_map_memory
+ *
+ * PARAMETERS:  where               - Physical address of memory to be mapped
+ *              length              - How much memory to map
+ *
+ * RETURN:      Pointer to mapped memory. Null on error.
+ *
+ * DESCRIPTION: Map physical memory into caller's address space
+ *
+ *****************************************************************************/
+
+void *acpi_os_map_memory(acpi_physical_address where, acpi_size length)
+{
+
+	return (ACPI_TO_POINTER((acpi_size) where));
+}
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_unmap_memory
+ *
+ * PARAMETERS:  where               - Logical address of memory to be unmapped
+ *              length              - How much memory to unmap
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Delete a previously created mapping. Where and Length must
+ *              correspond to a previous mapping exactly.
+ *
+ *****************************************************************************/
+
+void acpi_os_unmap_memory(void *where, acpi_size length)
+{
+
+	return;
+}
+#endif
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_allocate
+ *
+ * PARAMETERS:  size                - Amount to allocate, in bytes
+ *
+ * RETURN:      Pointer to the new allocation. Null on error.
+ *
+ * DESCRIPTION: Allocate memory. Algorithm is dependent on the OS.
+ *
+ *****************************************************************************/
+
+void *acpi_os_allocate(acpi_size size)
+{
+	void *mem;
+
+	mem = (void *)malloc((size_t) size);
+	return (mem);
+}
+
+#ifdef USE_NATIVE_ALLOCATE_ZEROED
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_os_allocate_zeroed
+ *
+ * PARAMETERS:  size                - Amount to allocate, in bytes
+ *
+ * RETURN:      Pointer to the new allocation. Null on error.
+ *
+ * DESCRIPTION: Allocate and zero memory. Algorithm is dependent on the OS.
+ *
+ *****************************************************************************/
+
+void *acpi_os_allocate_zeroed(acpi_s