/******************************************************************************
*
* Module Name: apdump - Dump routines for ACPI tables (acpidump)
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2018, 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 "acpidump.h"
/* Local prototypes */
static int
ApDumpTableBuffer (
ACPI_TABLE_HEADER *Table,
UINT32 Instance,
ACPI_PHYSICAL_ADDRESS Address);
/******************************************************************************
*
* FUNCTION: ApIsValidHeader
*
* PARAMETERS: Table - Pointer to table to be validated
*
* RETURN: TRUE if the header appears to be valid. FALSE otherwise
*
* DESCRIPTION: Check for a valid ACPI table header
*
******************************************************************************/
BOOLEAN
ApIsValidHeader (
ACPI_TABLE_HEADER *Table)
{
if (!ACPI_VALIDATE_RSDP_SIG (Table->Signature))
{
/* Make sure signature is all ASCII and a valid ACPI name */
if (!AcpiUtValidNameseg (Table->Signature))
{
fprintf (stderr, "Table signature (0x%8.8X) is invalid\n",
*(UINT32 *) Table->Signature);
return (FALSE);
}
/* Check for minimum table length */
if (Table->Length < sizeof (ACPI_TABLE_HEADER))
{
fprintf (stderr, "Table length (0x%8.8X) is invalid\n",
Table->Length);
return (FALSE);
}
}
return (TRUE);
}
/******************************************************************************
*
* FUNCTION: ApIsValidChecksum
*
* PARAMETERS: Table - Pointer to table to be validated
*
* RETURN: TRUE if the checksum appears to be valid. FALSE otherwise.
*
* DESCRIPTION: Check for a valid ACPI table checksum.
*
******************************************************************************/
BOOLEAN
ApIsValidChecksum (
ACPI_TABLE_HEADER *Table)
{
ACPI_STATUS Status;
ACPI_TABLE_RSDP *Rsdp;
if (ACPI_VALIDATE_RSDP_SIG (Table->Signature))
{
/*
* Checksum for RSDP.
* Note: Other checksums are computed during the table dump.
*/
Rsdp = ACPI_CAST_PTR (ACPI_TABLE_RSDP, Table);
Status = AcpiTbValidateRsdp (Rsdp);
}
else
{
Status = AcpiTbVerifyChecksum (Table, Table->Length);
}
if (ACPI_FAILURE (Status))
{
fprintf (stderr, "%4.4s: Warning: wrong checksum in table\n",
Table->Signature);
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: ApGetTableLength
*
* PARAMETERS: Table - Pointer to the table
*
* RETURN: Table length
*
* DESCRIPTION: Obtain table length according to table signature.
*
******************************************************************************/
UINT32
ApGetTableLength (
ACPI_TABLE_HEADER *Table)
{
ACPI_TABLE_RSDP *Rsdp;
/* Check if table is valid */
if (!ApIsValidHeader (Table))
{
return (0);
}
if (ACPI_VALIDATE_RSDP_SIG (Table->Signature))
{
Rsdp = ACPI_CAST_PTR (ACPI_TABLE_RSDP, Table);
return (AcpiTbGetRsdpLength (Rsdp));
}
/* Normal ACPI table */
return (Table->Length);
}
/******************************************************************************
*
* FUNCTION: ApDumpTableBuffer
*
* PARAMETERS: Table - ACPI table to be dumped
* Instance - ACPI table instance no. to be dumped
* Address - Physical address of the table
*
* RETURN: None
*
* DESCRIPTION: Dump an ACPI table in standard ASCII hex format, with a
* header that is compatible with the AcpiXtract utility.
*
******************************************************************************/
static int
ApDumpTableBuffer (
ACPI_TABLE_HEADER *Table,
UINT32 Instance,
ACPI_PHYSICAL_ADDRESS Address)
{
UINT32 TableLength;
TableLength = ApGetTableLength (Table);
/* Print only the header if requested */
if (Gbl_SummaryMode)
{
AcpiTbPrintTableHeader (Address, Table);
return (0);
}
/* Dump to binary file if requested */
if (Gbl_BinaryMode)
{
return (ApWriteToBinaryFile (Table, Instance));
}
/*
* Dump the table with header for use with acpixtract utility.
* Note: simplest to just always emit a 64-bit address. AcpiXtract
* utility can handle this.
*/
fprintf (Gbl_OutputFile, "%4.4s @ 0x%8.8X%8.8X\n",
Table->Signature, ACPI_FORMAT_UINT64 (Address));
AcpiUtDumpBufferToFile (Gbl_OutputFile,
ACPI_CAST_PTR (UINT8, Table), TableLength,
DB_BYTE_DISPLAY, 0);
fprintf (Gbl_OutputFile, "\n");
return (0);
}
/******************************************************************************
*
* FUNCTION: ApDumpAllTables
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Get all tables from the RSDT/XSDT (or at least all of the
* tables that we can possibly get).
*
******************************************************************************/
int
ApDumpAllTables (
void)
{
ACPI_TABLE_HEADER *Table;
UINT32 Instance = 0;
ACPI_PHYSICAL_ADDRESS Address;
ACPI_STATUS Status;
int TableStatus;
UINT32 i;
/* Get and dump all available ACPI tables */
for (i = 0; i < AP_MAX_ACPI_FILES; i++)
{
Status = AcpiOsGetTableByIndex (i, &Table, &Instance, &Address);
if (ACPI_FAILURE (Status))
{
/* AE_LIMIT means that no more tables are available */
if (Status == AE_LIMIT)
{
return (0);
}
else if (i == 0)
{
fprintf (stderr, "Could not get ACPI tables, %s\n",
AcpiFormatException (Status));
return (-1);
}
else
{
fprintf (stderr, "Could not get ACPI table at index %u, %s\n",
i, AcpiFormatException (Status));
continue;
}
}
TableStatus = ApDumpTableBuffer (Table, Instance, Address);
ACPI_FREE (Table);
if (TableStatus)
{
break;
}
}
/* Something seriously bad happened if the loop terminates here */
return (-1);
}
/******************************************************************************
*
* FUNCTION: ApDumpTableByAddress
*
* PARAMETERS: AsciiAddress - Address for requested ACPI table
*
* RETURN: Status
*
* DESCRIPTION: Get an ACPI table via a physical address and dump it.
*
******************************************************************************/
int
ApDumpTableByAddress (
char *AsciiAddress)
{
ACPI_PHYSICAL_ADDRESS Address;
ACPI_TABLE_HEADER *Table;
ACPI_STATUS Status;
int TableStatus;
UINT64 LongAddress;
/* Convert argument to an integer physical address */
Status = AcpiUtStrtoul64 (AsciiAddress, &LongAddress);
if (ACPI_FAILURE (Status))
{
fprintf (stderr, "%s: Could not convert to a physical address\n",
AsciiAddress);
return (-1);
}
Address = (ACPI_PHYSICAL_ADDRESS) LongAddress;
Status = AcpiOsGetTableByAddress (Address, &Table);
if (ACPI_FAILURE (Status))
{
fprintf (stderr, "Could not get table at 0x%8.8X%8.8X, %s\n",
ACPI_FORMAT_UINT64 (Address),
AcpiFormatException (Status));
return (-1);
}
TableStatus = ApDumpTableBuffer (Table, 0, Address);
ACPI_FREE (Table);
return (TableStatus);
}
/******************************************************************************
*
* FUNCTION: ApDumpTableByName
*
* PARAMETERS: Signature - Requested ACPI table signature
*
* RETURN: Status
*
* DESCRIPTION: Get an ACPI table via a signature and dump it. Handles
* multiple tables with the same signature (SSDTs).
*
******************************************************************************/
int
ApDumpTableByName (
char *Signature)
{
char LocalSignature [ACPI_NAME_SIZE + 1];
UINT32 Instance;
ACPI_TABLE_HEADER *Table;
ACPI_PHYSICAL_ADDRESS Address;
ACPI_STATUS Status;
int TableStatus;
if (strlen (Signature) != ACPI_NAME_SIZE)
{
fprintf (stderr,
"Invalid table signature [%s]: must be exactly 4 characters\n",
Signature);
return (-1);
}
/* Table signatures are expected to be uppercase */
strcpy (LocalSignature, Signature);
AcpiUtStrupr (LocalSignature);
/* To be friendly, handle tables whose signatures do not match the name */
if (ACPI_COMPARE_NAME (LocalSignature, "FADT"))
{
strcpy (LocalSignature, ACPI_SIG_FADT);
}
else if (ACPI_COMPARE_NAME (LocalSignature, "MADT"))
{
strcpy (LocalSignature, ACPI_SIG_MADT);
}
/* Dump all instances of this signature (to handle multiple SSDTs) */
for (Instance = 0; Instance < AP_MAX_ACPI_FILES; Instance++)
{
Status = AcpiOsGetTableByName (LocalSignature, Instance,
&Table, &Address);
if (ACPI_FAILURE (Status))
{
/* AE_LIMIT means that no more tables are available */
if (Status == AE_LIMIT)
{
return (0);
}
fprintf (stderr,
"Could not get ACPI table with signature [%s], %s\n",
LocalSignature, AcpiFormatException (Status));
return (-1);
}
TableStatus = ApDumpTableBuffer (Table, Instance, Address);
ACPI_FREE (Table);
if (TableStatus)
{
break;
}
}
/* Something seriously bad happened if the loop terminates here */
return (-1);
}
/******************************************************************************
*
* FUNCTION: ApDumpTableFromFile
*
* PARAMETERS: Pathname - File containing the binary ACPI table
*
* RETURN: Status
*
* DESCRIPTION: Dump an ACPI table from a binary file
*
******************************************************************************/
int
ApDumpTableFromFile (
char *Pathname)
{
ACPI_TABLE_HEADER *Table;
UINT32 FileSize = 0;
int TableStatus = -1;
/* Get the entire ACPI table from the file */
Table = ApGetTableFromFile (Pathname, &FileSize);
if (!Table)
{
return (-1);
}
if (!AcpiUtValidNameseg (Table->Signature))
{
fprintf (stderr,
"No valid ACPI signature was found in input file %s\n",
Pathname);
}
/* File must be at least as long as the table length */
if (Table->Length > FileSize)
{
fprintf (stderr,
"Table length (0x%X) is too large for input file (0x%X) %s\n",
Table->Length, FileSize, Pathname);
goto Exit;
}
if (Gbl_VerboseMode)
{
fprintf (stderr,
"Input file: %s contains table [%4.4s], 0x%X (%u) bytes\n",
Pathname, Table->Signature, FileSize, FileSize);
}
TableStatus = ApDumpTableBuffer (Table, 0, 0);
Exit:
ACPI_FREE (Table);
return (TableStatus);
}