Philipp Deppenwiese merged this change.
util/cbmem: Add cbmem TCPA log support
* Read and print the TCPA ACPI log.
Change-Id: Ie2253d86cfc675d45b0a728794cc784215401f4a
Signed-off-by: Philipp Deppenwiese <zaolin@das-labor.org>
Reviewed-on: https://review.coreboot.org/26244
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
---
M src/commonlib/include/commonlib/coreboot_tables.h
M src/lib/coreboot_table.c
M util/cbmem/cbmem.c
3 files changed, 73 insertions(+), 7 deletions(-)
diff --git a/src/commonlib/include/commonlib/coreboot_tables.h b/src/commonlib/include/commonlib/coreboot_tables.h
index f411ff2..806dfc7 100644
--- a/src/commonlib/include/commonlib/coreboot_tables.h
+++ b/src/commonlib/include/commonlib/coreboot_tables.h
@@ -310,6 +310,7 @@
#define LB_TAG_CBMEM_CONSOLE 0x0017
#define LB_TAG_MRC_CACHE 0x0018
#define LB_TAG_ACPI_GNVS 0x0024
+#define LB_TAG_TCPA_LOG 0x0034
#define LB_TAG_WIFI_CALIBRATION 0x0027
#define LB_TAG_VPD 0x002c
struct lb_cbmem_ref {
diff --git a/src/lib/coreboot_table.c b/src/lib/coreboot_table.c
index 8fc7b6f..2d74c8e 100644
--- a/src/lib/coreboot_table.c
+++ b/src/lib/coreboot_table.c
@@ -339,7 +339,8 @@
{CBMEM_ID_CONSOLE, LB_TAG_CBMEM_CONSOLE},
{CBMEM_ID_ACPI_GNVS, LB_TAG_ACPI_GNVS},
{CBMEM_ID_VPD, LB_TAG_VPD},
- {CBMEM_ID_WIFI_CALIBRATION, LB_TAG_WIFI_CALIBRATION}
+ {CBMEM_ID_WIFI_CALIBRATION, LB_TAG_WIFI_CALIBRATION},
+ {CBMEM_ID_TCPA_LOG, LB_TAG_TCPA_LOG}
};
int i;
diff --git a/util/cbmem/cbmem.c b/util/cbmem/cbmem.c
index 42761dc..3435c4c 100644
--- a/util/cbmem/cbmem.c
+++ b/util/cbmem/cbmem.c
@@ -34,6 +34,7 @@
#include <regex.h>
#include <commonlib/cbmem_id.h>
#include <commonlib/timestamp_serialized.h>
+#include <commonlib/tcpa_log_serialized.h>
#include <commonlib/coreboot_tables.h>
#ifdef __OpenBSD__
@@ -264,6 +265,7 @@
static struct lb_cbmem_ref timestamps;
static struct lb_cbmem_ref console;
+static struct lb_cbmem_ref tcpa_log;
static struct lb_memory_range cbmem;
/* This is a work-around for a nasty problem introduced by initially having
@@ -308,7 +310,7 @@
static int parse_cbtable_entries(const struct mapping *table_mapping)
{
size_t i;
- const struct lb_record* lbr_p;
+ const struct lb_record *lbr_p;
size_t table_size = mapping_size(table_mapping);
const void *lbtable = mapping_virt(table_mapping);
int forwarding_table_found = 0;
@@ -323,12 +325,19 @@
continue;
case LB_TAG_TIMESTAMPS: {
debug(" Found timestamp table.\n");
- timestamps = parse_cbmem_ref((struct lb_cbmem_ref *) lbr_p);
+ timestamps =
+ parse_cbmem_ref((struct lb_cbmem_ref *)lbr_p);
continue;
}
case LB_TAG_CBMEM_CONSOLE: {
debug(" Found cbmem console.\n");
- console = parse_cbmem_ref((struct lb_cbmem_ref *) lbr_p);
+ console = parse_cbmem_ref((struct lb_cbmem_ref *)lbr_p);
+ continue;
+ }
+ case LB_TAG_TCPA_LOG: {
+ debug(" Found tcpa log table.\n");
+ tcpa_log =
+ parse_cbmem_ref((struct lb_cbmem_ref *)lbr_p);
continue;
}
case LB_TAG_FORWARD: {
@@ -338,7 +347,7 @@
* search at the new address.
*/
struct lb_forward lbf_p =
- *(const struct lb_forward *) lbr_p;
+ *(const struct lb_forward *)lbr_p;
debug(" Found forwarding entry.\n");
ret = parse_cbtable(lbf_p.forward, 0);
@@ -674,6 +683,51 @@
free(sorted_tst_p);
}
+/* dump the tcpa log table */
+static void dump_tcpa_log(void)
+{
+ int i, j;
+ const struct tcpa_table *tclt_p;
+ size_t size;
+ struct mapping tcpa_mapping;
+ char log_string[TCPA_LOG_STRING_LENGTH];
+ char hash[TCPA_FORMAT_HASH_LENGTH];
+
+ if (tcpa_log.tag != LB_TAG_TCPA_LOG) {
+ fprintf(stderr, "No tcpa log found in coreboot table.\n");
+ return;
+ }
+
+ size = sizeof(*tclt_p);
+ tclt_p = map_memory(&tcpa_mapping, tcpa_log.cbmem_addr, size);
+ if (!tclt_p)
+ die("Unable to map tcpa log header\n");
+
+ size += tclt_p->num_entries * sizeof(tclt_p->entries[0]);
+
+ unmap_memory(&tcpa_mapping);
+
+ tclt_p = map_memory(&tcpa_mapping, tcpa_log.cbmem_addr, size);
+ if (!tclt_p)
+ die("Unable to map full tcpa log table\n");
+
+ printf("coreboot TCPA log:\n\n");
+
+ for (i = 0; i < tclt_p->num_entries; i++) {
+ const struct tcpa_entry *tce = &tclt_p->entries[i];
+
+ memset(log_string, 0, TCPA_LOG_STRING_LENGTH);
+ for (j = 0; j < tce->digest_length; j++)
+ sprintf((char *)&(hash[j * 2]), "%02x", tce->digest[j]);
+
+ snprintf(log_string, TCPA_LOG_STRING_LENGTH, "%u %s 00 [%s]\n",
+ tce->pcr, hash, tce->name);
+ printf("%s", log_string);
+ }
+
+ unmap_memory(&tcpa_mapping);
+}
+
struct cbmem_console {
u32 size;
u32 cursor;
@@ -1051,7 +1105,7 @@
static void print_usage(const char *name, int exit_code)
{
- printf("usage: %s [-cCltTxVvh?]\n", name);
+ printf("usage: %s [-cCltTLxVvh?]\n", name);
printf("\n"
" -c | --console: print cbmem console\n"
" -1 | --oneboot: print cbmem console for last boot only\n"
@@ -1061,6 +1115,7 @@
" -r | --rawdump ID: print rawdump of specific ID (in hex) of cbtable\n"
" -t | --timestamps: print timestamp information\n"
" -T | --parseable-timestamps: print parseable timestamps\n"
+ " -L | --tcpa-log print TCPA log\n"
" -V | --verbose: verbose (debugging) output\n"
" -v | --version: print the version\n"
" -h | --help: print this help\n"
@@ -1192,6 +1247,7 @@
int print_hexdump = 0;
int print_rawdump = 0;
int print_timestamps = 0;
+ int print_tcpa_log = 0;
int machine_readable_timestamps = 0;
int one_boot_only = 0;
unsigned int rawdump_id = 0;
@@ -1202,6 +1258,7 @@
{"oneboot", 0, 0, '1'},
{"coverage", 0, 0, 'C'},
{"list", 0, 0, 'l'},
+ {"tcpa-log", 0, 0, 'L'},
{"timestamps", 0, 0, 't'},
{"parseable-timestamps", 0, 0, 'T'},
{"hexdump", 0, 0, 'x'},
@@ -1211,7 +1268,7 @@
{"help", 0, 0, 'h'},
{0, 0, 0, 0}
};
- while ((opt = getopt_long(argc, argv, "c1CltTxVvh?r:",
+ while ((opt = getopt_long(argc, argv, "c1CltTLxVvh?r:",
long_options, &option_index)) != EOF) {
switch (opt) {
case 'c':
@@ -1231,6 +1288,10 @@
print_list = 1;
print_defaults = 0;
break;
+ case 'L':
+ print_tcpa_log = 1;
+ print_defaults = 0;
+ break;
case 'x':
print_hexdump = 1;
print_defaults = 0;
@@ -1357,6 +1418,9 @@
if (print_defaults || print_timestamps)
dump_timestamps(machine_readable_timestamps);
+ if (print_tcpa_log)
+ dump_tcpa_log();
+
unmap_memory(&lbtable_mapping);
close(mem_fd);
To view, visit change 26244. To unsubscribe, or for help writing mail filters, visit settings.