Move HOMER BAR to Secure Memory in SMF Mode

This commits enables HOMER BAR to point to the top
of the secure memory on SMF-enabled systems. Consequently,
the HOMER image and hostboot reserved memory will
be moved to the secure memory if SMF is enabled.

Change-Id: I37c7527b06688a41e57f14b4107ff53a507ffae8
RTC: 198825
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/66702
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Nicholas E. Bofferding <bofferdn@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: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 62 insertions, 0 deletions

diff --git a/src/include/usr/secureboot/smf_utils.H b/src/include/usr/secureboot/smf_utils.H
new file mode 100644
index 000000000..554f8affe
--- /dev/null
+++ b/src/include/usr/secureboot/smf_utils.H
@@ -0,0 +1,62 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/include/usr/secureboot/smf_utils.H $                      */
+/*                                                                        */
+/* OpenPOWER HostBoot Project                                             */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2018                             */
+/* [+] International Business Machines Corp.                              */
+/*                                                                        */
+/*                                                                        */
+/* Licensed under the Apache License, Version 2.0 (the "License");        */
+/* you may not use this file except in compliance with the License.       */
+/* You may obtain a copy of the License at                                */
+/*                                                                        */
+/*     http://www.apache.org/licenses/LICENSE-2.0                         */
+/*                                                                        */
+/* Unless required by applicable law or agreed to in writing, software    */
+/* distributed under the License is distributed on an "AS IS" BASIS,      */
+/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
+/* implied. See the License for the specific language governing           */
+/* permissions and limitations under the License.                         */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+#ifndef __SMF_UTILS_H
+#define __SMF_UTILS_H
+
+#include <stdint.h>
+#include <errl/errlentry.H>
+
+namespace SECUREBOOT
+{
+
+namespace SMF
+{
+
+// HW limitations dictate that SMF memory needs to be a power-of-two
+// multiple of 256MB starting with 256MB.
+extern const uint64_t MIN_SMF_MEMORY_AMT;
+
+/**
+ * @brief Checks whether SMF mode is enabled on the system
+ *
+ * @return true: SMF is enabled; false: SMF is disabled.
+ */
+bool isSmfEnabled();
+
+/**
+ * @brief Checks whether the system has the correct risk level to
+ *        support SMF: SMF is supported on Axone by default or on
+ *        NIMBUS or CUMULUS with risk level >= 4.
+ *
+ * @return nullptr: the current system supports SMF
+ *         non-nullptr: an internal error occurred or the system
+ *                      does not support SMF
+ */
+errlHndl_t checkRiskLevelForSmf();
+
+} // namespace SMF
+
+} // namespace SECUREBOOT
+#endif