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cbmem utility: support command line options 

The tool could print much more useful information than
just time stamps, for example the cbmem console on systems
that don't have a kernel patched to support /sys/firmware/log.

Hence, add command line option parsing to make adding such
features easier in the future.

Change-Id: Ib2b2584970f8a4e4187da803fcc5a95469f23a6a
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2091
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Tested-by: build bot (Jenkins)
This commit is contained in:
Stefan Reinauer 2013-01-02 15:43:56 -08:00 committed by Stefan Reinauer
parent 2c3f2609ca
commit 1e0e55615f
1 changed files with 52 additions and 1 deletions
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51
util/cbmem/cbmem.c
View File

@ -21,6 +21,8 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include "stdlib.h"
#include "boot/coreboot_tables.h"
@ -32,6 +34,8 @@ typedef uint64_t u64;
#include "cbmem.h"
#include "timestamp.h"
#define CBMEM_VERSION "1.0"
/* File descriptor used to access /dev/mem */
static FILE* fd;
@ -246,12 +250,59 @@ static void dump_timestamps(const struct timestamp_table *tst_p)
}
}
void print_version(void)
{
printf("cbmem v%s -- ", CBMEM_VERSION);
printf("Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.\n\n");
printf(
"This program is free software: you can redistribute it and/or modify\n"
"it under the terms of the GNU General Public License as published by\n"
"the Free Software Foundation, version 2 of the License.\n\n"
"This program is distributed in the hope that it will be useful,\n"
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
"GNU General Public License for more details.\n\n"
"You should have received a copy of the GNU General Public License\n"
"along with this program. If not, see <http://www.gnu.org/licenses/>.\n\n");
}
void print_usage(const char *name)
{
printf("usage: %s [-vh?]\n", name);
printf("\n"
" -v | --version: print the version\n"
" -h | --help: print this help\n"
"\n");
exit(1);
}
int main(int argc, char** argv)
{
int j;
static const int possible_base_addresses[] = { 0, 0xf0000 };
int opt, option_index = 0;
static struct option long_options[] = {
{"version", 0, 0, 'v'},
{"help", 0, 0, 'h'},
{0, 0, 0, 0}
};
while ((opt = getopt_long(argc, argv, "vh?",
long_options, &option_index)) != EOF) {
switch (opt) {
case 'v':
print_version();
exit(0);
break;
case 'h':
case '?':
default:
print_usage(argv[0]);
exit(0);
break;
}
}
fd = fopen("/dev/mem", "r");
if (!fd) {
printf("failed to gain memory access\n");