Initial import of the Intel-maintained ACPI Component Architecture. This

is Intel's reference implementation of the core operating-system ACPI
support.  (This import is on the vendor branch.)

1 files changed, 319 insertions, 0 deletions

diff --git a/sys/contrib/dev/acpica/tbxfroot.c b/sys/contrib/dev/acpica/tbxfroot.c
new file mode 100644
index 000000000000..d02a96d32efa
--- /dev/null
+++ b/sys/contrib/dev/acpica/tbxfroot.c
@@ -0,0 +1,319 @@
+/******************************************************************************
+ *
+ * Module Name: tbxfroot - Find the root ACPI table (RSDT)
+ *              $Revision: 28 $
+ *
+ *****************************************************************************/
+
+/******************************************************************************
+ *
+ * 1. Copyright Notice
+ *
+ * Some or all of this work - Copyright (c) 1999, Intel Corp.  All rights
+ * reserved.
+ *
+ * 2. License
+ *
+ * 2.1. This is your license from Intel Corp. under its intellectual property
+ * rights.  You may have additional license terms from the party that provided
+ * you this software, covering your right to use that party's intellectual
+ * property rights.
+ *
+ * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
+ * copy of the source code appearing in this file ("Covered Code") an
+ * irrevocable, perpetual, worldwide license under Intel's copyrights in the
+ * base code distributed originally by Intel ("Original Intel Code") to copy,
+ * make derivatives, distribute, use and display any portion of the Covered
+ * Code in any form, with the right to sublicense such rights; and
+ *
+ * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
+ * license (with the right to sublicense), under only those claims of Intel
+ * patents that are infringed by the Original Intel Code, to make, use, sell,
+ * offer to sell, and import the Covered Code and derivative works thereof
+ * solely to the minimum extent necessary to exercise the above copyright
+ * license, and in no event shall the patent license extend to any additions
+ * to or modifications of the Original Intel Code.  No other license or right
+ * is granted directly or by implication, estoppel or otherwise;
+ *
+ * The above copyright and patent license is granted only if the following
+ * conditions are met:
+ *
+ * 3. Conditions
+ *
+ * 3.1. Redistribution of Source with Rights to Further Distribute Source.
+ * Redistribution of source code of any substantial portion of the Covered
+ * Code or modification with rights to further distribute source must include
+ * the above Copyright Notice, the above License, this list of Conditions,
+ * and the following Disclaimer and Export Compliance provision.  In addition,
+ * Licensee must cause all Covered Code to which Licensee contributes to
+ * contain a file documenting the changes Licensee made to create that Covered
+ * Code and the date of any change.  Licensee must include in that file the
+ * documentation of any changes made by any predecessor Licensee.  Licensee
+ * must include a prominent statement that the modification is derived,
+ * directly or indirectly, from Original Intel Code.
+ *
+ * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
+ * Redistribution of source code of any substantial portion of the Covered
+ * Code or modification without rights to further distribute source must
+ * include the following Disclaimer and Export Compliance provision in the
+ * documentation and/or other materials provided with distribution.  In
+ * addition, Licensee may not authorize further sublicense of source of any
+ * portion of the Covered Code, and must include terms to the effect that the
+ * license from Licensee to its licensee is limited to the intellectual
+ * property embodied in the software Licensee provides to its licensee, and
+ * not to intellectual property embodied in modifications its licensee may
+ * make.
+ *
+ * 3.3. Redistribution of Executable. Redistribution in executable form of any
+ * substantial portion of the Covered Code or modification must reproduce the
+ * above Copyright Notice, and the following Disclaimer and Export Compliance
+ * provision in the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3.4. Intel retains all right, title, and interest in and to the Original
+ * Intel Code.
+ *
+ * 3.5. Neither the name Intel nor any other trademark owned or controlled by
+ * Intel shall be used in advertising or otherwise to promote the sale, use or
+ * other dealings in products derived from or relating to the Covered Code
+ * without prior written authorization from Intel.
+ *
+ * 4. Disclaimer and Export Compliance
+ *
+ * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
+ * HERE.  ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
+ * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT,  ASSISTANCE,
+ * INSTALLATION, TRAINING OR OTHER SERVICES.  INTEL WILL NOT PROVIDE ANY
+ * UPDATES, ENHANCEMENTS OR EXTENSIONS.  INTEL SPECIFICALLY DISCLAIMS ANY
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
+ * PARTICULAR PURPOSE.
+ *
+ * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
+ * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
+ * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
+ * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
+ * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
+ * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.  THESE LIMITATIONS
+ * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
+ * LIMITED REMEDY.
+ *
+ * 4.3. Licensee shall not export, either directly or indirectly, any of this
+ * software or system incorporating such software without first obtaining any
+ * required license or other approval from the U. S. Department of Commerce or
+ * any other agency or department of the United States Government.  In the
+ * event Licensee exports any such software from the United States or
+ * re-exports any such software from a foreign destination, Licensee shall
+ * ensure that the distribution and export/re-export of the software is in
+ * compliance with all laws, regulations, orders, or other restrictions of the
+ * U.S. Export Administration Regulations. Licensee agrees that neither it nor
+ * any of its subsidiaries will export/re-export any technical data, process,
+ * software, or service, directly or indirectly, to any country for which the
+ * United States government or any agency thereof requires an export license,
+ * other governmental approval, or letter of assurance, without first obtaining
+ * such license, approval or letter.
+ *
+ *****************************************************************************/
+
+#define __TBXFROOT_C__
+
+#include "acpi.h"
+#include "achware.h"
+#include "actables.h"
+
+
+#define _COMPONENT          TABLE_MANAGER
+        MODULE_NAME         ("tbxfroot")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiFindRootPointer
+ *
+ * PARAMETERS:  **RsdpPhysicalAddress       - Where to place the RSDP address
+ *
+ * RETURN:      Status, Physical address of the RSDP
+ *
+ * DESCRIPTION: Find the RSDP
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiFindRootPointer (
+    void                    **RsdpPhysicalAddress)
+{
+    ACPI_TABLE_DESC         TableInfo;
+    ACPI_STATUS             Status;
+
+
+    FUNCTION_TRACE ("AcpiFindRootPointer");
+
+
+    /* Get the RSDP */
+
+    Status = AcpiTbFindRsdp (&TableInfo);
+    if (ACPI_FAILURE (Status))
+    {
+        REPORT_WARNING (("RSDP structure not found\n"));
+        return_ACPI_STATUS (AE_NO_ACPI_TABLES);
+    }
+
+    *RsdpPhysicalAddress = TableInfo.Pointer;
+
+    return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiTbScanMemoryForRsdp
+ *
+ * PARAMETERS:  StartAddress        - Starting pointer for search
+ *              Length              - Maximum length to search
+ *
+ * RETURN:      Pointer to the RSDP if found, otherwise NULL.
+ *
+ * DESCRIPTION: Search a block of memory for the RSDP signature
+ *
+ ******************************************************************************/
+
+UINT8 *
+AcpiTbScanMemoryForRsdp (
+    UINT8                   *StartAddress,
+    UINT32                  Length)
+{
+    UINT32                  Offset;
+    UINT8                   *MemRover;
+
+
+    FUNCTION_TRACE ("TbScanMemoryForRsdp");
+
+    /* Search from given start addr for the requested length  */
+
+    for (Offset = 0, MemRover = StartAddress;
+         Offset < Length;
+         Offset += RSDP_SCAN_STEP, MemRover += RSDP_SCAN_STEP)
+    {
+
+        /* The signature and checksum must both be correct */
+
+        if (STRNCMP ((NATIVE_CHAR *) MemRover,
+                        RSDP_SIG, sizeof (RSDP_SIG)-1) == 0 &&
+            AcpiTbChecksum (MemRover,
+                        sizeof (ROOT_SYSTEM_DESCRIPTOR_POINTER)) == 0)
+        {
+            /* If so, we have found the RSDP */
+
+            return_PTR (MemRover);
+        }
+    }
+
+    /* Searched entire block, no RSDP was found */
+
+    return_PTR (NULL);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiTbFindRsdp
+ *
+ * PARAMETERS:  *BufferPtr              - If == NULL, read data from buffer
+ *                                        rather than searching memory
+ *              *TableInfo              - Where the table info is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Search lower 1Mbyte of memory for the root system descriptor
+ *              pointer structure.  If it is found, set *RSDP to point to it.
+ *
+ *              NOTE: The RSDP must be either in the first 1K of the Extended
+ *              BIOS Data Area or between E0000 and FFFFF (ACPI 1.0 section
+ *              5.2.2; assertion #421).
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiTbFindRsdp (
+    ACPI_TABLE_DESC         *TableInfo)
+{
+    UINT8                   *TablePtr;
+    UINT8                   *MemRover;
+    UINT8                   *PhysAddr;
+    ACPI_STATUS             Status = AE_OK;
+
+
+    FUNCTION_TRACE ("TbFindRsdp");
+
+
+    /*
+     * Search memory for RSDP.  First map low physical memory.
+     */
+
+    Status = AcpiOsMapMemory (LO_RSDP_WINDOW_BASE, LO_RSDP_WINDOW_SIZE,
+                                (void **)&TablePtr);
+
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    /*
+     * 1) Search EBDA (low memory) paragraphs
+     */
+
+    MemRover = AcpiTbScanMemoryForRsdp (TablePtr, LO_RSDP_WINDOW_SIZE);
+
+    /* This mapping is no longer needed */
+
+    AcpiOsUnmapMemory (TablePtr, LO_RSDP_WINDOW_SIZE);
+
+    if (MemRover)
+    {
+        /* Found it, return the physical address */
+
+        PhysAddr = LO_RSDP_WINDOW_BASE;
+        PhysAddr += (MemRover - TablePtr);
+
+        TableInfo->Pointer = (ACPI_TABLE_HEADER *) PhysAddr;
+
+        return_ACPI_STATUS (AE_OK);
+    }
+
+
+    /*
+     * 2) Search upper memory: 16-byte boundaries in E0000h-F0000h
+     */
+
+    Status = AcpiOsMapMemory (HI_RSDP_WINDOW_BASE, HI_RSDP_WINDOW_SIZE,
+                                (void **)&TablePtr);
+
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
+    MemRover = AcpiTbScanMemoryForRsdp (TablePtr, HI_RSDP_WINDOW_SIZE);
+
+    /* This mapping is no longer needed */
+
+    AcpiOsUnmapMemory (TablePtr, HI_RSDP_WINDOW_SIZE);
+
+    if (MemRover)
+    {
+        /* Found it, return the physical address */
+
+        PhysAddr = HI_RSDP_WINDOW_BASE;
+        PhysAddr += (MemRover - TablePtr);
+
+        TableInfo->Pointer = (ACPI_TABLE_HEADER *) PhysAddr;
+
+        return_ACPI_STATUS (AE_OK);
+    }
+
+
+    /* RSDP signature was not found */
+
+    return_ACPI_STATUS (AE_NOT_FOUND);
+}
+
+