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Add nvramtool -D option that allows taking cmos data from 

a plain binary file. Overrides using cmos.default in CBFS
if both -C and -D are given.

Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Acked-by: Stefan Reinauer <stepan@coreboot.org>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6286 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Patrick Georgi 2011-01-21 07:29:40 +00:00 committed by Patrick Georgi
parent 269e932340
commit 202be7b6b7
4 changed files with 43 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
util/nvramtool/common.c
View File

@ -82,7 +82,8 @@ void usage(FILE * outfile)
"LAYOUT_FILE.\n"
" -t: Use CMOS layout specified by CMOS option "
"table.\n"
" -C CBFS_FILE: Use CBFS file for layout and CMOS defaults.\n"
" -C CBFS_FILE: Use CBFS file for layout and CMOS data.\n"
" -D CMOS_FILE: Use CMOS file for CMOS data (overrides CMOS of -C).\n"
" [-n] -r NAME: Show parameter NAME. If -n is given, "
"show value only.\n"
" -e NAME: Show all possible values for parameter "

39
util/nvramtool/nvramtool.c
View File

@ -28,6 +28,10 @@
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
\*****************************************************************************/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mman.h>
#include "common.h"
#include "opts.h"
#include "lbtable.h"
@ -93,6 +97,7 @@ static const hexdump_format_t cmos_dump_format =
****************************************************************************/
int main(int argc, char *argv[])
{
void *cmos_default = NULL;
cmos_layout_get_fn_t fn = get_layout_from_cmos_table;
parse_nvramtool_args(argc, argv);
@ -105,12 +110,38 @@ int main(int argc, char *argv[])
fn = get_layout_from_cmos_table;
} else if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CBFS_FILE].found) {
open_cbfs(nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CBFS_FILE].param);
void *cmosdefault = cbfs_find_file("cmos.default", CBFS_COMPONENT_CMOS_DEFAULT, NULL);
if (cmosdefault == NULL) {
printf("Need a cmos.default in the CBFS image for now.\n");
if (!nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].found) {
cmos_default = cbfs_find_file("cmos.default", CBFS_COMPONENT_CMOS_DEFAULT, NULL);
if (cmos_default == NULL) {
fprintf(stderr, "Need a cmos.default in the CBFS image or separate cmos file (-D).\n");
exit(1);
}
}
}
if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].found) {
int fd;
struct stat fd_stat;
if ((fd = open(nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].param, O_RDWR | O_CREAT, 0666)) < 0) {
fprintf(stderr, "Couldn't open '%s'\n", nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].param);
exit(1);
}
select_hal(HAL_MEMORY, cmosdefault);
if (fstat(fd, &fd_stat) == -1) {
fprintf(stderr, "Couldn't stat '%s'\n", nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].param);
exit(1);
}
if (fd_stat.st_size < 128) {
lseek(fd, 127, SEEK_SET);
write(fd, "\0", 1);
fsync(fd);
}
cmos_default = mmap(NULL, 128, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (cmos_default == MAP_FAILED) {
fprintf(stderr, "Couldn't map '%s'\n", nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].param);
exit(1);
}
}
if (cmos_default) {
select_hal(HAL_MEMORY, cmos_default);
fn = get_layout_from_cbfs_file;
}

6
util/nvramtool/opts.c
View File

@ -41,7 +41,7 @@ static void register_op_modifier(nvramtool_op_modifier_t mod, char mod_param[]);
static void resolve_op_modifiers(void);
static void sanity_check_args(void);
static const char getopt_string[] = "-ab:B:c::C:de:hil::np:r:tvw:xX:y:Y";
static const char getopt_string[] = "-ab:B:c::C:dD:e:hil::np:r:tvw:xX:y:Y";
/****************************************************************************
* parse_nvramtool_args
@ -89,6 +89,10 @@ void parse_nvramtool_args(int argc, char *argv[])
case 'd':
register_op(&op_found, NVRAMTOOL_OP_LBTABLE_DUMP, NULL);
break;
case 'D':
register_op_modifier(NVRAMTOOL_MOD_USE_CMOS_FILE,
optarg);
break;
case 'e':
register_op(&op_found, NVRAMTOOL_OP_SHOW_PARAM_VALUES,
optarg);

1
util/nvramtool/opts.h
View File

@ -59,6 +59,7 @@ typedef struct {
typedef enum { NVRAMTOOL_MOD_SHOW_VALUE_ONLY = 0,
NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE,
NVRAMTOOL_MOD_USE_CBFS_FILE,
NVRAMTOOL_MOD_USE_CMOS_FILE,
NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE,
NVRAMTOOL_NUM_OP_MODIFIERS /* must always be last */
} nvramtool_op_modifier_t;