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diff --git a/util/lxbios/cmos_ops.c b/util/lxbios/cmos_ops.c
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-/*****************************************************************************\
- * cmos_ops.c
- * $Id$
- *****************************************************************************
- * Copyright (C) 2002-2005 The Regents of the University of California.
- * Produced at the Lawrence Livermore National Laboratory.
- * Written by David S. Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>.
- * UCRL-CODE-2003-012
- * All rights reserved.
- *
- * This file is part of nvramtool, a utility for reading/writing coreboot
- * parameters and displaying information from the coreboot table.
- * For details, see http://coreboot.org/nvramtool.
- *
- * Please also read the file DISCLAIMER which is included in this software
- * distribution.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License (as published by the
- * Free Software Foundation) version 2, dated June 1991.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
- * conditions of the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
-\*****************************************************************************/
-
-#include "common.h"
-#include "cmos_ops.h"
-#include "cmos_lowlevel.h"
-
-static int prepare_cmos_op_common (const cmos_entry_t *e);
-
-/****************************************************************************
- * prepare_cmos_op_common
- *
- * Perform a few checks common to both reads and writes.
- ****************************************************************************/
-static int prepare_cmos_op_common (const cmos_entry_t *e)
- { int result;
-
- if (e->config == CMOS_ENTRY_RESERVED)
- /* Access to reserved parameters is not permitted. */
- return CMOS_OP_RESERVED;
-
- if ((result = verify_cmos_op(e->bit, e->length)) != OK)
- return result;
-
- assert(e->length > 0);
- return OK;
- }
-
-/****************************************************************************
- * prepare_cmos_read
- *
- * The caller wishes to read a CMOS parameter represented by 'e'. Perform
- * sanity checking on 'e'. If a problem was found with e, return an error
- * code. Else return OK.
- ****************************************************************************/
-int prepare_cmos_read (const cmos_entry_t *e)
- { int result;
-
- if ((result = prepare_cmos_op_common(e)) != OK)
- return result;
-
- switch (e->config)
- { case CMOS_ENTRY_ENUM:
- case CMOS_ENTRY_HEX:
- break;
-
- default:
- BUG();
- }
-
- return OK;
- }
-
-/****************************************************************************
- * prepare_cmos_write
- *
- * The caller wishes to set a CMOS parameter represented by 'e' to a value
- * whose string representation is stored in 'value_str'. Perform sanity
- * checking on 'value_str'. On error, return an error code. Else store the
- * numeric equivalent of 'value_str' in '*value' and return OK.
- ****************************************************************************/
-int prepare_cmos_write (const cmos_entry_t *e, const char value_str[],
- unsigned long long *value)
- { const cmos_enum_t *q;
- unsigned long long out;
- const char *p;
- int negative, result, found_one;
-
- if ((result = prepare_cmos_op_common(e)) != OK)
- return result;
-
- switch (e->config)
- { case CMOS_ENTRY_ENUM:
- /* Make sure the user's input corresponds to a valid option. */
- for (q = first_cmos_enum_id(e->config_id), found_one = 0;
- q != NULL;
- q = next_cmos_enum_id(q))
- { found_one = 1;
-
- if (!strncmp(q->text, value_str, CMOS_MAX_TEXT_LENGTH))
- break;
- }
-
- if (!found_one)
- return CMOS_OP_NO_MATCHING_ENUM;
-
- if (q == NULL)
- return CMOS_OP_BAD_ENUM_VALUE;
-
- out = q->value;
- break;
-
- case CMOS_ENTRY_HEX:
- /* See if the first character of 'value_str' (excluding any initial
- * whitespace) is a minus sign.
- */
- for (p = value_str; isspace(*p); p++);
- negative = (*p == '-');
-
- out = strtoull(value_str, (char **) &p, 0);
-
- if (*p)
- return CMOS_OP_INVALID_INT;
-
- /* If we get this far, the user specified a valid integer. However
- * we do not currently support the use of negative numbers as CMOS
- * parameter values.
- */
- if (negative)
- return CMOS_OP_NEGATIVE_INT;
-
- break;
-
- default:
- BUG();
- }
-
- if ((e->length < (8 * sizeof(*value))) &&
- (out >= (1ull << e->length)))
- return CMOS_OP_VALUE_TOO_WIDE;
-
- *value = out;
- return OK;
- }
-
-/****************************************************************************
- * cmos_checksum_read
- *
- * Read the checksum for the coreboot parameters stored in CMOS and return
- * this value.
- ****************************************************************************/
-uint16_t cmos_checksum_read (void)
- { uint16_t lo, hi;
-
- /* The checksum is stored in a big-endian format. */
- hi = cmos_read_byte(cmos_checksum_index);
- lo = cmos_read_byte(cmos_checksum_index + 1);
- return (hi << 8) + lo;
- }
-
-/****************************************************************************
- * cmos_checksum_write
- *
- * Set the checksum for the coreboot parameters stored in CMOS to
- * 'checksum'.
- ****************************************************************************/
-void cmos_checksum_write (uint16_t checksum)
- { unsigned char lo, hi;
-
- /* The checksum is stored in a big-endian format. */
- hi = (unsigned char) (checksum >> 8);
- lo = (unsigned char) (checksum & 0x00ff);
- cmos_write_byte(cmos_checksum_index, hi);
- cmos_write_byte(cmos_checksum_index + 1, lo);
- }
-
-/****************************************************************************
- * cmos_checksum_compute
- *
- * Compute a checksum for the coreboot parameter values currently stored in
- * CMOS and return this checksum.
- ****************************************************************************/
-uint16_t cmos_checksum_compute (void)
- { unsigned i, sum;
-
- sum = 0;
-
- for (i = cmos_checksum_start; i <= cmos_checksum_end; i++)
- sum += cmos_read_byte(i);
-
- return ~((uint16_t) (sum & 0xffff));
- }
-
-/****************************************************************************
- * cmos_checksum_verify
- *
- * Verify that the coreboot CMOS checksum is valid. If checksum is not
- * valid then print warning message and exit.
- ****************************************************************************/
-void cmos_checksum_verify (void)
- { uint16_t computed, actual;
-
- set_iopl(3);
- computed = cmos_checksum_compute();
- actual = cmos_checksum_read();
- set_iopl(0);
-
- if (computed != actual)
- { fprintf(stderr, "%s: Warning: Coreboot CMOS checksum is bad.\n",
- prog_name);
- exit(1);
- }
- }
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