Secure Boot: Support Phyp debug flag in HDAT

PHYP needs a way to know if SBE security backdoor is enabled
for debug purposes. This change creates a flag in TPM instance
data structure to indicate whether the backdoor is enabled. This
flag is passed by SBE to the hb bootloader; also added the flag
to indicate whether PCR is poisoned (default of 0).
The population of this flag will be implemented on Fleetwood.

Change-Id: I22305dbc9651134ba7dfe3b0bd3c760fe53c2c85
RTC: 188961
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/56045
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Nicholas E. Bofferding <bofferdn@us.ibm.com>
Reviewed-by: Michael Baiocchi <mbaiocch@us.ibm.com>
CI-Ready: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/src/usr/secureboot/base/service.C b/src/usr/secureboot/base/service.C
index 1f5b5d83d..e5af124ab 100644
--- a/src/usr/secureboot/base/service.C
+++ b/src/usr/secureboot/base/service.C
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2013,2017                        */
+/* Contributors Listed Below - COPYRIGHT 2013,2018                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -637,6 +637,23 @@ bool allowAttrOverrides()
 };
 #endif
 
+bool getSbeSecurityBackdoor()
+{
+    bool l_backdoorEnabled = false;
+
+    if(g_BlToHbDataManager.getSecBackdoor())
+    {
+        l_backdoorEnabled = true;
+        SB_INF("getSbeSecurityBackdoor: SBE Security Backdoor is enabled.");
+    }
+    else
+    {
+        l_backdoorEnabled = false;
+        SB_INF("getSbeSecurityBackdoor: SBE Security Backdoor is disabled.");
+    }
+    return l_backdoorEnabled;
+}
+
 uint8_t getSbeSecurityMode()
 {
     return g_sbeSecurityMode;