summaryrefslogtreecommitdiff
path: root/src/grp-boot/systemd-boot
diff options
context:
space:
mode:
authorLuke Shumaker <lukeshu@sbcglobal.net>2016-12-17 03:11:52 -0500
committerLuke Shumaker <lukeshu@sbcglobal.net>2016-12-17 03:11:52 -0500
commitb849891b5dde5ee14ab8b7b7db74e65a4a38d993 (patch)
tree29bb0e6fda9b4b170041913de495da057bbe3621 /src/grp-boot/systemd-boot
parent004efebf9cc559ea131bb9460ee0ee198e2d5da7 (diff)
parent881228ff72434a0e3401a16bd87f179ef0ab1619 (diff)
Merge branch 'notsystemd/postmove' into notsystemd/master
# Conflicts: # src/grp-journal/libjournal-core/.gitignore # src/grp-system/libcore/include/core/mount.h
Diffstat (limited to 'src/grp-boot/systemd-boot')
-rw-r--r--src/grp-boot/systemd-boot/measure.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/src/grp-boot/systemd-boot/measure.c b/src/grp-boot/systemd-boot/measure.c
index 05adf41778..42c7f477de 100644
--- a/src/grp-boot/systemd-boot/measure.c
+++ b/src/grp-boot/systemd-boot/measure.c
@@ -209,12 +209,35 @@ static EFI_STATUS tpm1_measure_to_pcr_and_event_log(const EFI_TCG *tcg, UINT32 p
return EFI_SUCCESS;
}
+/*
+ * According to TCG EFI Protocol Specification for TPM 2.0 family,
+ * all events generated after the invocation of EFI_TCG2_GET_EVENT_LOG
+ * shall be stored in an instance of an EFI_CONFIGURATION_TABLE aka
+ * EFI TCG 2.0 final events table. Hence, it is necessary to trigger the
+ * internal switch through calling get_event_log() in order to allow
+ * to retrieve the logs from OS runtime.
+ */
+static EFI_STATUS trigger_tcg2_final_events_table(const EFI_TCG2 *tcg)
+{
+ return uefi_call_wrapper(tcg->GetEventLog, 5, tcg,
+ EFI_TCG2_EVENT_LOG_FORMAT_TCG_2, NULL,
+ NULL, NULL);
+}
static EFI_STATUS tpm2_measure_to_pcr_and_event_log(const EFI_TCG2 *tcg, UINT32 pcrindex, const EFI_PHYSICAL_ADDRESS buffer,
UINT64 buffer_size, const CHAR16 *description) {
EFI_STATUS status;
EFI_TCG2_EVENT *tcg_event;
UINTN desc_len;
+ static BOOLEAN triggered = FALSE;
+
+ if (triggered == FALSE) {
+ status = trigger_tcg2_final_events_table(tcg);
+ if (EFI_ERROR(status))
+ return status;
+
+ triggered = TRUE;
+ }
desc_len = StrLen(description) * sizeof(CHAR16);