From: Zhao Yakui <yakui.zhao@xxxxxxxxx>
Some tables are missing under the directory of /sys/firmware/acpi/tables.
For example: RSDT, RSDP.
In order to dump the missing table, Add one option to dump ACPI table by maping
/dev/mem directly instead of enumerating /sys/firmware/acpi/tables.
Signed-off-by: Zhao Yakui <yakui.zhao@xxxxxxxxx>
---
acpidump/acpidump.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
Index: pmtools/acpidump/acpidump.c
===================================================================
--- pmtools.orig/acpidump/acpidump.c
+++ pmtools/acpidump/acpidump.c
@@ -456,7 +456,7 @@ static void usage(const char *progname)
{
puts("Usage:");
printf("%s [--addr 0x1234][--table DSDT][--output filename]"
- "[--binary][--length 0x456][--help]\n", progname);
+ "[--binary][--memory][--length 0x456][--help]\n", progname);
puts("\t--addr 0x1234 or -a 0x1234 -- look for tables at this physical address");
puts("\t--table DSDT or -t DSDT -- only dump table with DSDT signature");
puts("\t--output filename or -o filename -- redirect output from stdin to filename");
@@ -464,6 +464,7 @@ static void usage(const char *progname)
puts("\t--length 0x456 or -l 0x456 -- works only with --addr, dump physical memory"
"\n\t\tregion without trying to understand it's contents");
puts("\t--skip 2 or -s 2 -- skip 2 tables of the given name and output only 3rd one");
+ puts("\t--memory or -m Use the /dev/mem to dump acpi tables");
puts("\t--help or -h -- this help message");
exit(0);
}
@@ -475,12 +476,13 @@ static struct option long_options[] = {
{"binary", 0, 0, 0},
{"length", 1, 0, 0},
{"skip", 1, 0, 0},
+ {"memory", 0, 0, 0},
{"help", 0, 0, 0},
{0, 0, 0, 0}
};
int main(int argc, char **argv)
{
- int option_index, c, fd;
+ int option_index, c, fd, skip_table;
u8 *raw;
struct acpi_rsdp_descriptor rsdpx, *x = 0;
char *filename = 0;
@@ -490,9 +492,10 @@ int main(int argc, char **argv)
connect = 0;
addr = length = 0;
skip = 0;
+ skip_table = 0;
while (1) {
option_index = 0;
- c = getopt_long(argc, argv, "a:t:o:bl:s:h",
+ c = getopt_long(argc, argv, "a:t:o:bml:s:h",
long_options, &option_index);
if (c == -1)
break;
@@ -519,6 +522,9 @@ int main(int argc, char **argv)
skip = strtoul(optarg, (char **)NULL, 10);
break;
case 6:
+ skip_table = 1;
+ break;
+ case 7:
usage(argv[0]);
exit(0);
}
@@ -541,6 +547,9 @@ int main(int argc, char **argv)
case 's':
skip = strtoul(optarg, (char **)NULL, 10);
break;
+ case 'm':
+ skip_table = 1;
+ break;
case 'h':
usage(argv[0]);
exit(0);
@@ -580,7 +589,7 @@ int main(int argc, char **argv)
* in dumping ACPI table, fall back to the conventional dumping
* mechanism by mapping /dev/mem.
*/
- if (acpi_dump_firmware_table(fd)) {
+ if (!skip_table && acpi_dump_firmware_table(fd)) {
acpi_dump_dynamic_SSDT(fd);
close(fd);
return 0;
--
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