vendor/acpica/20140627

1 files changed, 363 insertions, 0 deletions

diff --git a/source/components/utilities/utfileio.c b/source/components/utilities/utfileio.c
new file mode 100644
index 0000000000000..1d9adbbb55521
--- /dev/null
+++ b/source/components/utilities/utfileio.c
@@ -0,0 +1,363 @@
+/*******************************************************************************
+ *
+ * Module Name: utfileio - simple file I/O routines
+ *
+ ******************************************************************************/
+
+/*
+ * 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.h"
+#include "accommon.h"
+#include "actables.h"
+#include "acapps.h"
+
+#ifdef ACPI_ASL_COMPILER
+#include "aslcompiler.h"
+#endif
+
+
+#define _COMPONENT          ACPI_CA_DEBUGGER
+        ACPI_MODULE_NAME    ("utfileio")
+
+
+#ifdef ACPI_APPLICATION
+
+/* Local prototypes */
+
+static ACPI_STATUS
+AcpiUtCheckTextModeCorruption (
+    UINT8                   *Table,
+    UINT32                  TableLength,
+    UINT32                  FileLength);
+
+static ACPI_STATUS
+AcpiUtReadTable (
+    FILE                    *fp,
+    ACPI_TABLE_HEADER       **Table,
+    UINT32                  *TableLength);
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtCheckTextModeCorruption
+ *
+ * PARAMETERS:  Table           - Table buffer
+ *              TableLength     - Length of table from the table header
+ *              FileLength      - Length of the file that contains the table
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Check table for text mode file corruption where all linefeed
+ *              characters (LF) have been replaced by carriage return linefeed
+ *              pairs (CR/LF).
+ *
+ ******************************************************************************/
+
+static ACPI_STATUS
+AcpiUtCheckTextModeCorruption (
+    UINT8                   *Table,
+    UINT32                  TableLength,
+    UINT32                  FileLength)
+{
+    UINT32                  i;
+    UINT32                  Pairs = 0;
+
+
+    if (TableLength != FileLength)
+    {
+        ACPI_WARNING ((AE_INFO,
+            "File length (0x%X) is not the same as the table length (0x%X)",
+            FileLength, TableLength));
+    }
+
+    /* Scan entire table to determine if each LF has been prefixed with a CR */
+
+    for (i = 1; i < FileLength; i++)
+    {
+        if (Table[i] == 0x0A)
+        {
+            if (Table[i - 1] != 0x0D)
+            {
+                /* The LF does not have a preceding CR, table not corrupted */
+
+                return (AE_OK);
+            }
+            else
+            {
+                /* Found a CR/LF pair */
+
+                Pairs++;
+            }
+            i++;
+        }
+    }
+
+    if (!Pairs)
+    {
+        return (AE_OK);
+    }
+
+    /*
+     * Entire table scanned, each CR is part of a CR/LF pair --
+     * meaning that the table was treated as a text file somewhere.
+     *
+     * NOTE: We can't "fix" the table, because any existing CR/LF pairs in the
+     * original table are left untouched by the text conversion process --
+     * meaning that we cannot simply replace CR/LF pairs with LFs.
+     */
+    AcpiOsPrintf ("Table has been corrupted by text mode conversion\n");
+    AcpiOsPrintf ("All LFs (%u) were changed to CR/LF pairs\n", Pairs);
+    AcpiOsPrintf ("Table cannot be repaired!\n");
+    return (AE_BAD_VALUE);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtReadTable
+ *
+ * PARAMETERS:  fp              - File that contains table
+ *              Table           - Return value, buffer with table
+ *              TableLength     - Return value, length of table
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Load the DSDT from the file pointer
+ *
+ ******************************************************************************/
+
+static ACPI_STATUS
+AcpiUtReadTable (
+    FILE                    *fp,
+    ACPI_TABLE_HEADER       **Table,
+    UINT32                  *TableLength)
+{
+    ACPI_TABLE_HEADER       TableHeader;
+    UINT32                  Actual;
+    ACPI_STATUS             Status;
+    UINT32                  FileSize;
+    BOOLEAN                 StandardHeader = TRUE;
+    INT32                   Count;
+
+    /* Get the file size */
+
+    FileSize = CmGetFileSize (fp);
+    if (FileSize == ACPI_UINT32_MAX)
+    {
+        return (AE_ERROR);
+    }
+
+    if (FileSize < 4)
+    {
+        return (AE_BAD_HEADER);
+    }
+
+    /* Read the signature */
+
+    fseek (fp, 0, SEEK_SET);
+
+    Count = fread (&TableHeader, 1, sizeof (ACPI_TABLE_HEADER), fp);
+    if (Count != sizeof (ACPI_TABLE_HEADER))
+    {
+        AcpiOsPrintf ("Could not read the table header\n");
+        return (AE_BAD_HEADER);
+    }
+
+    /* The RSDP table does not have standard ACPI header */
+
+    if (ACPI_VALIDATE_RSDP_SIG (TableHeader.Signature))
+    {
+        *TableLength = FileSize;
+        StandardHeader = FALSE;
+    }
+    else
+    {
+
+#if 0
+        /* Validate the table header/length */
+
+        Status = AcpiTbValidateTableHeader (&TableHeader);
+        if (ACPI_FAILURE (Status))
+        {
+            AcpiOsPrintf ("Table header is invalid!\n");
+            return (Status);
+        }
+#endif
+
+        /* File size must be at least as long as the Header-specified length */
+
+        if (TableHeader.Length > FileSize)
+        {
+            AcpiOsPrintf (
+                "TableHeader length [0x%X] greater than the input file size [0x%X]\n",
+                TableHeader.Length, FileSize);
+
+#ifdef ACPI_ASL_COMPILER
+            Status = FlCheckForAscii (fp, NULL, FALSE);
+            if (ACPI_SUCCESS (Status))
+            {
+                AcpiOsPrintf ("File appears to be ASCII only, must be binary\n",
+                    TableHeader.Length, FileSize);
+            }
+#endif
+            return (AE_BAD_HEADER);
+        }
+
+#ifdef ACPI_OBSOLETE_CODE
+        /* We only support a limited number of table types */
+
+        if (!ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_DSDT) &&
+            !ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_PSDT) &&
+            !ACPI_COMPARE_NAME ((char *) TableHeader.Signature, ACPI_SIG_SSDT))
+        {
+            AcpiOsPrintf ("Table signature [%4.4s] is invalid or not supported\n",
+                (char *) TableHeader.Signature);
+            ACPI_DUMP_BUFFER (&TableHeader, sizeof (ACPI_TABLE_HEADER));
+            return (AE_ERROR);
+        }
+#endif
+
+        *TableLength = TableHeader.Length;
+    }
+
+    /* Allocate a buffer for the table */
+
+    *Table = AcpiOsAllocate ((size_t) FileSize);
+    if (!*Table)
+    {
+        AcpiOsPrintf (
+            "Could not allocate memory for ACPI table %4.4s (size=0x%X)\n",
+            TableHeader.Signature, *TableLength);
+        return (AE_NO_MEMORY);
+    }
+
+    /* Get the rest of the table */
+
+    fseek (fp, 0, SEEK_SET);
+    Actual = fread (*Table, 1, (size_t) FileSize, fp);
+    if (Actual == FileSize)
+    {
+        if (StandardHeader)
+        {
+            /* Now validate the checksum */
+
+            Status = AcpiTbVerifyChecksum ((void *) *Table,
+                        ACPI_CAST_PTR (ACPI_TABLE_HEADER, *Table)->Length);
+
+            if (Status == AE_BAD_CHECKSUM)
+            {
+                Status = AcpiUtCheckTextModeCorruption ((UINT8 *) *Table,
+                            FileSize, (*Table)->Length);
+                return (Status);
+            }
+        }
+        return (AE_OK);
+    }
+
+    if (Actual > 0)
+    {
+        AcpiOsPrintf ("Warning - reading table, asked for %X got %X\n",
+            FileSize, Actual);
+        return (AE_OK);
+    }
+
+    AcpiOsPrintf ("Error - could not read the table file\n");
+    AcpiOsFree (*Table);
+    *Table = NULL;
+    *TableLength = 0;
+    return (AE_ERROR);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    AcpiUtReadTableFromFile
+ *
+ * PARAMETERS:  Filename         - File where table is located
+ *              Table            - Where a pointer to the table is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Get an ACPI table from a file
+ *
+ ******************************************************************************/
+
+ACPI_STATUS
+AcpiUtReadTableFromFile (
+    char                    *Filename,
+    ACPI_TABLE_HEADER       **Table)
+{
+    FILE                    *File;
+    UINT32                  FileSize;
+    UINT32                  TableLength;
+    ACPI_STATUS             Status = AE_ERROR;
+
+
+    /* Open the file, get current size */
+
+    File = fopen (Filename, "rb");
+    if (!File)
+    {
+        perror ("Could not open input file");
+        return (Status);
+    }
+
+    FileSize = CmGetFileSize (File);
+    if (FileSize == ACPI_UINT32_MAX)
+    {
+        goto Exit;
+    }
+
+    /* Get the entire file */
+
+    fprintf (stderr, "Loading Acpi table from file %10s - Length %.8u (%06X)\n",
+        Filename, FileSize, FileSize);
+
+    Status = AcpiUtReadTable (File, Table, &TableLength);
+    if (ACPI_FAILURE (Status))
+    {
+        AcpiOsPrintf ("Could not get table from the file\n");
+    }
+
+Exit:
+    fclose(File);
+    return (Status);
+}
+
+#endif