Subversion Repositories Kolibri OS

/******************************************************************************

 *

 * Module Name: tbprint - Table output utilities

 *

 *****************************************************************************/

/*

 * Copyright (C) 2000 - 2015, 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 

#include "accommon.h"

#include "actables.h"

#define _COMPONENT          ACPI_TABLES

ACPI_MODULE_NAME("tbprint")

/* Local prototypes */

static void acpi_tb_fix_string(char *string, acpi_size length);

static void

acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,

			     struct acpi_table_header *header);

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_fix_string

 *

 * PARAMETERS:  string              - String to be repaired

 *              length              - Maximum length

 *

 * RETURN:      None

 *

 * DESCRIPTION: Replace every non-printable or non-ascii byte in the string

 *              with a question mark '?'.

 *

 ******************************************************************************/

static void acpi_tb_fix_string(char *string, acpi_size length)

{

	while (length && *string) {

		if (!isprint((int)*string)) {

			*string = '?';

		}

		string++;

		length--;

	}

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_cleanup_table_header

 *

 * PARAMETERS:  out_header          - Where the cleaned header is returned

 *              header              - Input ACPI table header

 *

 * RETURN:      Returns the cleaned header in out_header

 *

 * DESCRIPTION: Copy the table header and ensure that all "string" fields in

 *              the header consist of printable characters.

 *

 ******************************************************************************/

static void

acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,

			     struct acpi_table_header *header)

{

	memcpy(out_header, header, sizeof(struct acpi_table_header));

	acpi_tb_fix_string(out_header->signature, ACPI_NAME_SIZE);

	acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE);

	acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);

	acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAME_SIZE);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_print_table_header

 *

 * PARAMETERS:  address             - Table physical address

 *              header              - Table header

 *

 * RETURN:      None

 *

 * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP.

 *

 ******************************************************************************/

void

acpi_tb_print_table_header(acpi_physical_address address,

			   struct acpi_table_header *header)

{

	struct acpi_table_header local_header;

	if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) {

		/* FACS only has signature and length fields */

		ACPI_INFO((AE_INFO, "%-4.4s 0x%8.8X%8.8X %06X",

			   header->signature, ACPI_FORMAT_UINT64(address),

			   header->length));

	} else if (ACPI_VALIDATE_RSDP_SIG(header->signature)) {

		/* RSDP has no common fields */

		memcpy(local_header.oem_id,

		       ACPI_CAST_PTR(struct acpi_table_rsdp, header)->oem_id,

		       ACPI_OEM_ID_SIZE);

		acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE);

		ACPI_INFO((AE_INFO, "RSDP 0x%8.8X%8.8X %06X (v%.2d %-6.6s)",

			   ACPI_FORMAT_UINT64(address),

			   (ACPI_CAST_PTR(struct acpi_table_rsdp, header)->

			    revision >

			    0) ? ACPI_CAST_PTR(struct acpi_table_rsdp,

					       header)->length : 20,

			   ACPI_CAST_PTR(struct acpi_table_rsdp,

					 header)->revision,

			   local_header.oem_id));

	} else {

		/* Standard ACPI table with full common header */

		acpi_tb_cleanup_table_header(&local_header, header);

		ACPI_INFO((AE_INFO,

			   "%-4.4s 0x%8.8X%8.8X"

			   " %06X (v%.2d %-6.6s %-8.8s %08X %-4.4s %08X)",

			   local_header.signature, ACPI_FORMAT_UINT64(address),

			   local_header.length, local_header.revision,

			   local_header.oem_id, local_header.oem_table_id,

			   local_header.oem_revision,

			   local_header.asl_compiler_id,

			   local_header.asl_compiler_revision));

	}

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_validate_checksum

 *

 * PARAMETERS:  table               - ACPI table to verify

 *              length              - Length of entire table

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns

 *              exception on bad checksum.

 *

 ******************************************************************************/

acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)

{

	u8 checksum;

	/*

	 * FACS/S3PT:

	 * They are the odd tables, have no standard ACPI header and no checksum

	 */

	if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_S3PT) ||

	    ACPI_COMPARE_NAME(table->signature, ACPI_SIG_FACS)) {

		return (AE_OK);

	}

	/* Compute the checksum on the table */

	checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);

	/* Checksum ok? (should be zero) */

	if (checksum) {

		ACPI_BIOS_WARNING((AE_INFO,

				   "Incorrect checksum in table [%4.4s] - 0x%2.2X, "

				   "should be 0x%2.2X",

				   table->signature, table->checksum,

				   (u8)(table->checksum - checksum)));

#if (ACPI_CHECKSUM_ABORT)

		return (AE_BAD_CHECKSUM);

#endif

	}

	return (AE_OK);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_tb_checksum

 *

 * PARAMETERS:  buffer          - Pointer to memory region to be checked

 *              length          - Length of this memory region

 *

 * RETURN:      Checksum (u8)

 *

 * DESCRIPTION: Calculates circular checksum of memory region.

 *

 ******************************************************************************/

u8 acpi_tb_checksum(u8 *buffer, u32 length)

{

	u8 sum = 0;

	u8 *end = buffer + length;

	while (buffer < end) {

		sum = (u8)(sum + *(buffer++));

	}

	return (sum);

}