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nvramtool: Change precedence order for data sources 

nvramtool couldn't handle certain combinations of sources for CMOS
layout and CMOS data. This change allows for nearly all combinations.

Signed-off-by: Mathias Krause <mathias.krause@secunet.com>
Acked-by: Patrick Georgi <patrick.georgi@secunet.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6437 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Mathias Krause 2011-03-08 12:58:16 +00:00 committed by Patrick Georgi
parent fab35e3f73
commit 943b8b5997
1 changed files with 26 additions and 11 deletions
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35
util/nvramtool/cli/nvramtool.c
View File

@ -102,13 +102,9 @@ int main(int argc, char *argv[])
parse_nvramtool_args(argc, argv);
if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].found) {
set_layout_filename(nvramtool_op_modifiers
[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].param);
fn = get_layout_from_file;
} else if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE].found) {
fn = get_layout_from_cmos_table;
} else if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CBFS_FILE].found) {
/* If we should operate on a CBFS file default to reading the layout
* and CMOS contents from it. */
if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CBFS_FILE].found) {
open_cbfs(nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CBFS_FILE].param);
if (!nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].found) {
cmos_default = cbfs_find_file("cmos.default", CBFS_COMPONENT_CMOS_DEFAULT, NULL);
@ -117,36 +113,55 @@ int main(int argc, char *argv[])
exit(1);
}
}
fn = get_layout_from_cbfs_file;
}
/* If the user wants to use a specific layout file or explicitly use
* the coreboot option table allow him to override previous settings. */
if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].found) {
set_layout_filename(nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].param);
fn = get_layout_from_file;
} else if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE].found) {
fn = get_layout_from_cmos_table;
}
/* Allow the user to use a file for the CMOS contents, possibly
* overriding a previously opened "cmos.default" file from the CBFS. */
if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].found) {
int fd;
struct stat fd_stat;
int fd;
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);
}
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);
}
}
/* Switch to memory based CMOS access. */
if (cmos_default) {
select_hal(HAL_MEMORY, cmos_default);
fn = get_layout_from_cbfs_file;
}
register_cmos_layout_get_fn(fn);
op_fns[nvramtool_op.op] ();
op_fns[nvramtool_op.op]();
return 0;
}