Patrick Georgi | 55189c9 | 2020-05-10 20:09:31 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Stefan Reinauer | 6540ae5 | 2007-07-12 16:35:42 +0000 | [diff] [blame] | 2 | |
| 3 | #include "common.h" |
| 4 | |
| 5 | /* basename of this program, as reported by argv[0] */ |
Uwe Hermann | 6e56594 | 2008-03-01 19:06:32 +0000 | [diff] [blame] | 6 | const char prog_name[] = "nvramtool"; |
Stefan Reinauer | 6540ae5 | 2007-07-12 16:35:42 +0000 | [diff] [blame] | 7 | |
| 8 | /* version of this program */ |
Stefan Reinauer | a67aab7 | 2008-09-27 10:08:28 +0000 | [diff] [blame] | 9 | const char prog_version[] = "2.1"; |
Stefan Reinauer | 6540ae5 | 2007-07-12 16:35:42 +0000 | [diff] [blame] | 10 | |
| 11 | /**************************************************************************** |
| 12 | * get_line_from_file |
| 13 | * |
| 14 | * Get a line of input from file 'f'. Store result in 'line' which is an |
| 15 | * array of 'line_buf_size' bytes. |
| 16 | ****************************************************************************/ |
Stefan Reinauer | 90b96b6 | 2010-01-13 21:00:23 +0000 | [diff] [blame] | 17 | int get_line_from_file(FILE * f, char line[], int line_buf_size) |
| 18 | { |
| 19 | if (fgets(line, line_buf_size, f) == NULL) |
| 20 | return LINE_EOF; |
Stefan Reinauer | 6540ae5 | 2007-07-12 16:35:42 +0000 | [diff] [blame] | 21 | |
Stefan Reinauer | 90b96b6 | 2010-01-13 21:00:23 +0000 | [diff] [blame] | 22 | /* If the file contains a line that is too long, then it's best |
Stefan Reinauer | 14e2277 | 2010-04-27 06:56:47 +0000 | [diff] [blame] | 23 | * to let the user know right away rather than passing back a |
Stefan Reinauer | 90b96b6 | 2010-01-13 21:00:23 +0000 | [diff] [blame] | 24 | * truncated result that will lead to problems later on. |
| 25 | */ |
| 26 | return (strlen(line) == ((size_t) (line_buf_size - 1))) ? |
| 27 | LINE_TOO_LONG : OK; |
| 28 | } |
Stefan Reinauer | 6540ae5 | 2007-07-12 16:35:42 +0000 | [diff] [blame] | 29 | |
| 30 | /**************************************************************************** |
| 31 | * out_of_memory |
| 32 | * |
| 33 | * We ran out of memory. Print an error message and die. |
| 34 | ****************************************************************************/ |
Evgeny Zinoviev | 79f7fcc | 2020-01-11 01:26:54 +0300 | [diff] [blame] | 35 | noreturn void out_of_memory(void) |
Stefan Reinauer | 90b96b6 | 2010-01-13 21:00:23 +0000 | [diff] [blame] | 36 | { |
| 37 | fprintf(stderr, "%s: Out of memory.\n", prog_name); |
| 38 | exit(1); |
| 39 | } |
Stefan Reinauer | 6540ae5 | 2007-07-12 16:35:42 +0000 | [diff] [blame] | 40 | |
| 41 | /**************************************************************************** |
| 42 | * usage |
| 43 | * |
| 44 | * Write a usage message to 'outfile'. If 'outfile' is 'stderr' then exit |
| 45 | * with a value of 1. Otherwise exit with a value of 0. |
| 46 | ****************************************************************************/ |
Stefan Reinauer | 90b96b6 | 2010-01-13 21:00:23 +0000 | [diff] [blame] | 47 | void usage(FILE * outfile) |
| 48 | { |
| 49 | fprintf(outfile, |
| 50 | "Usage: %s [-y LAYOUT_FILE | -t] PARAMETER ...\n\n" |
| 51 | " Read/write coreboot parameters or show info from " |
| 52 | "coreboot table.\n\n" |
| 53 | " -y LAYOUT_FILE: Use CMOS layout specified by " |
| 54 | "LAYOUT_FILE.\n" |
| 55 | " -t: Use CMOS layout specified by CMOS option " |
| 56 | "table.\n" |
Patrick Georgi | 202be7b | 2011-01-21 07:29:40 +0000 | [diff] [blame] | 57 | " -C CBFS_FILE: Use CBFS file for layout and CMOS data.\n" |
| 58 | " -D CMOS_FILE: Use CMOS file for CMOS data (overrides CMOS of -C).\n" |
Stefan Reinauer | 90b96b6 | 2010-01-13 21:00:23 +0000 | [diff] [blame] | 59 | " [-n] -r NAME: Show parameter NAME. If -n is given, " |
| 60 | "show value only.\n" |
| 61 | " -e NAME: Show all possible values for parameter " |
| 62 | "NAME.\n" |
| 63 | " -a: Show names and values for all " |
| 64 | "parameters.\n" |
| 65 | " -w NAME=VALUE: Set parameter NAME to VALUE.\n" |
| 66 | " -p INPUT_FILE: Set parameters according to INPUT_FILE.\n" |
| 67 | " -i: Same as -p but file contents taken from " |
| 68 | "standard input.\n" |
| 69 | " -c [VALUE]: Show CMOS checksum or set checksum to " |
| 70 | "VALUE.\n" |
| 71 | " -l [ARG]: Show coreboot table info for ARG, or " |
| 72 | "all ARG choices.\n" |
Vikram Narayanan | a8111cf | 2012-04-14 15:25:13 +0530 | [diff] [blame] | 73 | " -L OUTPUT_BIN Write CMOS layout file in binary format\n" |
| 74 | " -H OUTPUT_HDR Write CMOS layout file in header format\n" |
Stefan Reinauer | 90b96b6 | 2010-01-13 21:00:23 +0000 | [diff] [blame] | 75 | " -d: Show low-level dump of coreboot table.\n" |
| 76 | " -Y: Show CMOS layout info.\n" |
| 77 | " -b OUTPUT_FILE: Dump CMOS memory contents to file.\n" |
| 78 | " -B INPUT_FILE: Write file contents to CMOS memory.\n" |
| 79 | " -x: Show hex dump of CMOS memory.\n" |
| 80 | " -X DUMPFILE: Show hex dump of CMOS dumpfile.\n" |
| 81 | " -v: Show version info for this program.\n" |
| 82 | " -h: Show this message.\n", prog_name); |
| 83 | exit(outfile == stderr); |
| 84 | } |