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Member "syslinux-6.03/gpxe/src/core/acpi.c" (6 Oct 2014, 1148 Bytes) of package /linux/misc/syslinux-6.03.tar.gz:


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    1 /*
    2  * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
    3  *
    4  * This program is free software; you can redistribute it and/or
    5  * modify it under the terms of the GNU General Public License as
    6  * published by the Free Software Foundation; either version 2 of the
    7  * License, or any later version.
    8  *
    9  * This program is distributed in the hope that it will be useful, but
   10  * WITHOUT ANY WARRANTY; without even the implied warranty of
   11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   12  * General Public License for more details.
   13  *
   14  * You should have received a copy of the GNU General Public License
   15  * along with this program; if not, write to the Free Software
   16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   17  */
   18 
   19 FILE_LICENCE ( GPL2_OR_LATER );
   20 
   21 #include <gpxe/acpi.h>
   22 
   23 /** @file
   24  *
   25  * ACPI support functions
   26  *
   27  */
   28 
   29 /**
   30  * Fix up ACPI table checksum
   31  *
   32  * @v acpi      ACPI table header
   33  */
   34 void acpi_fix_checksum ( struct acpi_description_header *acpi ) {
   35     unsigned int i = 0;
   36     uint8_t sum = 0;
   37 
   38     for ( i = 0 ; i < acpi->length ; i++ ) {
   39         sum += *( ( ( uint8_t * ) acpi ) + i );
   40     }
   41     acpi->checksum -= sum;
   42 }