Rename lxbios to nvramtool, step 3 (rename directory).
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3124 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Uwe Hermann
280
util/nvramtool/input_file.c
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280
util/nvramtool/input_file.c
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/*****************************************************************************\
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* input_file.c
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* $Id$
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*****************************************************************************
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* Copyright (C) 2002-2005 The Regents of the University of California.
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* Produced at the Lawrence Livermore National Laboratory.
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* Written by David S. Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>.
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* UCRL-CODE-2003-012
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* All rights reserved.
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*
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* This file is part of nvramtool, a utility for reading/writing coreboot
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* parameters and displaying information from the coreboot table.
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* For details, see http://coreboot.org/nvramtool.
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*
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* Please also read the file DISCLAIMER which is included in this software
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* distribution.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (as published by the
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* Free Software Foundation) version 2, dated June 1991.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
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* conditions of the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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\*****************************************************************************/
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#include "common.h"
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#include "input_file.h"
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#include "layout.h"
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#include "cmos_ops.h"
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#include "cmos_lowlevel.h"
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#include "reg_expr.h"
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static int get_input_file_line (FILE *f, char line[], int line_buf_size);
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static unsigned long long try_prepare_cmos_write (const cmos_entry_t *e,
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const char value_str[]);
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/* matches either a blank line or a comment line */
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static const char blank_or_comment_regex[] =
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/* a blank line */
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"(^[[:space:]]+$)"
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"|" /* or ... */
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/* a line consisting of: optional whitespace followed by */
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"(^[[:space:]]*"
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/* a '#' character and optionally, additional characters */
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"#.*$)";
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/* matches an assignment line */
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const char assignment_regex[] =
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/* optional whitespace */
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"^[[:space:]]*"
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/* followed by a coreboot parameter name */
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"([^[:space:]]+)"
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/* followed by optional whitespace */
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"[[:space:]]*"
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/* followed by an '=' character */
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"="
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/* followed by optional whitespace */
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"[[:space:]]*"
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/* followed by a value that may contain embedded whitespace */
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"([^[:space:]]+([[:space:]]+[^[:space:]]+)*)+"
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/* followed by optional whitespace */
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"[[:space:]]*$";
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static int line_num;
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/****************************************************************************
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* process_input_file
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*
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* Read the contents of file 'f' and return a pointer to a list of pending
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* write operations. Perform sanity checking on all write operations and
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* exit with an error message if there is a problem.
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****************************************************************************/
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cmos_write_t * process_input_file (FILE *f)
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{
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static const int LINE_BUF_SIZE = 256;
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static const size_t N_MATCHES = 4;
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char line[LINE_BUF_SIZE];
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const char *name, *value;
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cmos_write_t *list, *item, **p;
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regex_t blank_or_comment, assignment;
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regmatch_t match[N_MATCHES];
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const cmos_entry_t *e;
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list = NULL;
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p = &list;
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compile_reg_exprs(REG_EXTENDED | REG_NEWLINE, 2, blank_or_comment_regex,
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&blank_or_comment, assignment_regex, &assignment);
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/* each iteration processes one line from input file */
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for (line_num = 1;
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get_input_file_line(f, line, LINE_BUF_SIZE) == OK;
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line_num++)
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{ /* skip comments and blank lines */
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if (!regexec(&blank_or_comment, line, 0, NULL, 0))
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continue;
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/* Is this a valid assignment line? If not, then it's a syntax
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* error.
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*/
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if (regexec(&assignment, line, N_MATCHES, match, 0))
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{ fprintf(stderr, "%s: Syntax error on line %d of input file.\n",
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prog_name, line_num);
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exit(1);
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}
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/* OK, we found an assignment. Break the line into substrings
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* representing the lefthand and righthand sides of the assignment.
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*/
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line[match[1].rm_eo] = '\0';
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line[match[2].rm_eo] = '\0';
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name = &line[match[1].rm_so];
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value = &line[match[2].rm_so];
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/* now look up the coreboot parameter name */
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if (is_checksum_name(name) || (e = find_cmos_entry(name)) == NULL)
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{ fprintf(stderr, "%s: Error on line %d of input file: CMOS parameter "
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"%s not found.\n", prog_name, line_num, name);
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exit(1);
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}
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/* At this point, we figure out what numeric value needs to be written
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* to which location. At the same time, we perform sanity checking on
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* the write operation.
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*/
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if ((item = (cmos_write_t *) malloc(sizeof(*item))) == NULL)
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out_of_memory();
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item->bit = e->bit;
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item->length = e->length;
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item->value = try_prepare_cmos_write(e, value);
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/* Append write operation to pending write list. */
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item->next = NULL;
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*p = item;
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p = &item->next;
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}
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free_reg_exprs(2, &blank_or_comment, &assignment);
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return list;
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}
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/****************************************************************************
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* do_cmos_writes
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*
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* 'list' is a linked list of pending CMOS write operations that have passed
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* all sanity checks. Perform all write operations, destroying the list as
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* we go.
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****************************************************************************/
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void do_cmos_writes (cmos_write_t *list)
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{ cmos_write_t *item;
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set_iopl(3);
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while (list != NULL)
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{ item = list;
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list = item->next;
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cmos_write(item->bit, item->length, item->value);
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free(item);
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}
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cmos_checksum_write(cmos_checksum_compute());
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set_iopl(0);
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}
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/****************************************************************************
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* get_input_file_line
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*
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* Get a line of input from file 'f'. Store result in 'line' which is an
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* array of 'line_buf_size' bytes. Return OK on success or an error code on
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* error.
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****************************************************************************/
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static int get_input_file_line (FILE *f, char line[], int line_buf_size)
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{ switch (get_line_from_file(f, line, line_buf_size))
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{ case OK:
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return OK;
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case LINE_EOF:
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return LINE_EOF;
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case LINE_TOO_LONG:
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fprintf(stderr, "%s: Error on line %d of input file: Maximum line "
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"length exceeded. Max is %d characters.\n", prog_name,
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line_num, line_buf_size - 2);
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break;
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default:
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BUG();
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}
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exit(1);
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return 1; /* keep compiler happy */
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}
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/****************************************************************************
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* try_prepare_cmos_write
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*
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* Attempt to convert 'value_str' to an integer representation for storage in
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* CMOS memory. On success, return the converted value. On error, exit with
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* an error message.
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****************************************************************************/
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static unsigned long long try_prepare_cmos_write (const cmos_entry_t *e,
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const char value_str[])
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{ unsigned long long value;
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switch (prepare_cmos_write(e, value_str, &value))
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{ case OK:
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return value;
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case CMOS_OP_BAD_ENUM_VALUE:
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fprintf(stderr, "%s: Error on line %d of input file: Bad value for "
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"parameter %s.", prog_name, line_num, e->name);
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break;
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case CMOS_OP_NEGATIVE_INT:
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fprintf(stderr, "%s: Error on line %d of input file: This program "
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"does not support assignment of negative numbers to "
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"coreboot parameters.", prog_name, line_num);
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break;
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case CMOS_OP_INVALID_INT:
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fprintf(stderr, "%s: Error on line %d of input file: %s is not a "
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"valid integer.", prog_name, line_num, value_str);
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break;
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case CMOS_OP_RESERVED:
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fprintf(stderr, "%s: Error on line %d of input file: Can not modify "
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"reserved coreboot parameter %s.", prog_name, line_num,
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e->name);
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break;
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case CMOS_OP_VALUE_TOO_WIDE:
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fprintf(stderr, "%s: Error on line %d of input file: Can not write "
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"value %s to CMOS parameter %s that is only %d bits wide.",
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prog_name, line_num, value_str, e->name, e->length);
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break;
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case CMOS_OP_NO_MATCHING_ENUM:
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fprintf(stderr, "%s: coreboot parameter %s has no matching enums.",
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prog_name, e->name);
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break;
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case CMOS_AREA_OUT_OF_RANGE:
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fprintf(stderr, "%s: The CMOS area specified by the layout info for "
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"coreboot parameter %s is out of range.", prog_name,
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e->name);
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break;
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case CMOS_AREA_OVERLAPS_RTC:
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fprintf(stderr, "%s: The CMOS area specified by the layout info for "
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"coreboot parameter %s overlaps the realtime clock area.",
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prog_name, e->name);
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break;
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case CMOS_AREA_TOO_WIDE:
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fprintf(stderr, "%s: The CMOS area specified by the layout info for "
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"coreboot parameter %s is too wide.",
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prog_name, e->name);
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break;
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default:
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fprintf(stderr,
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"%s: Unknown error encountered while attempting to modify "
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"coreboot parameter %s.", prog_name, e->name);
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break;
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}
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fprintf(stderr, " No CMOS writes performed.\n");
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exit(1);
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return 0; /* keep compiler happy */
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}
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