shift OBUS FIR programming inits for secure boot

p9_sbe_scominit:
unmask all OBUS EXTFIR bits, use PB CENT FIR 14 to mark update
for downstream code (qualify XBUS/OBUS EXTFIR updates to apply to PPE
platform only)

p9_fab_iovalid:
conditionally unmask OBUS EXTFIR based on state of PB CENT FIR 14
(will handle unmasking here when insecure -- Cronus or old SBE images)

p9_obus_extfir_setup:
new HWP for HB to call, mask OBUS EXTFIR bits for unused busses

Change-Id: If54c36bbc4d431a4c91e63ce9678a54bb8ada95f
Original-Change-Id: I07e7da4a7c61c041451ff4ddfeec3c266385d404
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/60600
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/60960
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>

3 files changed, 216 insertions, 0 deletions

diff --git a/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.C b/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.C
new file mode 100644
index 000000000..7f7685187
--- /dev/null
+++ b/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.C
@@ -0,0 +1,103 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.C $ */
+/*                                                                        */
+/* 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                                                     */
+///
+/// @file p9_obus_extfir_setup.C
+/// @brief Manage fabric link iovalid controls (FAPI2)
+///
+/// @author Joe McGill <jmcgill@us.ibm.com>
+///
+
+//
+// *HWP HWP Owner: Joe McGill <jmcgill@us.ibm.com>
+// *HWP FW Owner: Thi Tran <thi@us.ibm.com>
+// *HWP Team: Nest
+// *HWP Level: 3
+// *HWP Consumed by: HB
+//
+
+//------------------------------------------------------------------------------
+// Includes
+//------------------------------------------------------------------------------
+#include <p9_obus_extfir_setup.H>
+#include <p9_misc_scom_addresses.H>
+#include <p9_misc_scom_addresses_fld.H>
+
+
+//------------------------------------------------------------------------------
+// Function definitions
+//------------------------------------------------------------------------------
+
+
+// NOTE: see doxygen comments in header
+fapi2::ReturnCode
+p9_obus_extfir_setup(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target,
+                     const bool i_o0_smp_active,
+                     const bool i_o1_smp_active,
+                     const bool i_o2_smp_active,
+                     const bool i_o3_smp_active)
+{
+    FAPI_INF("Start");
+
+    fapi2::buffer<uint64_t> l_fbc_cent_fir;
+    fapi2::buffer<uint64_t> l_ras_fir_mask;
+
+    // read FBC center FIR to determine if SBE has unmasked all EXTFIR bits (new
+    // behavior)
+    FAPI_TRY(fapi2::getScom(i_target, PU_PB_CENT_SM0_PB_CENT_FIR_REG, l_fbc_cent_fir),
+             "Error from getScom (PU_PB_CENT_SM0_PB_CENT_FIR_REG)");
+
+    // new SBE code, set mask bits for inactive links
+    if (l_fbc_cent_fir.getBit<PU_PB_CENT_SM0_PB_CENT_FIR_MASK_REG_SPARE_14>())
+    {
+        l_ras_fir_mask.flush<0>();
+
+        if (!i_o0_smp_active)
+        {
+            l_ras_fir_mask.setBit<PU_PB_CENT_SM1_EXTFIR_REG_PB_X3_FIR_ERR>();
+        }
+
+        if (!i_o1_smp_active)
+        {
+            l_ras_fir_mask.setBit<PU_PB_CENT_SM1_EXTFIR_REG_PB_X4_FIR_ERR>();
+        }
+
+        if (!i_o2_smp_active)
+        {
+            l_ras_fir_mask.setBit<PU_PB_CENT_SM1_EXTFIR_REG_PB_X5_FIR_ERR>();
+        }
+
+        if (!i_o3_smp_active)
+        {
+            l_ras_fir_mask.setBit<PU_PB_CENT_SM1_EXTFIR_REG_PB_X6_FIR_ERR>();
+        }
+
+        FAPI_TRY(fapi2::putScom(i_target, PU_PB_CENT_SM1_EXTFIR_MASK_REG_OR, l_ras_fir_mask),
+                 "Error writing RAS FIR mask register (PU_PB_CENT_SM1_EXTFIR_MASK_REG_OR)!");
+    }
+
+fapi_try_exit:
+    FAPI_INF("End");
+    return fapi2::current_err;
+}
diff --git a/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.H b/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.H
new file mode 100755
index 000000000..5be36dfd5
--- /dev/null
+++ b/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.H
@@ -0,0 +1,87 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.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                                                     */
+///
+/// @file p9_obus_extfir_setup.H
+/// @brief Manage FBC EXTFIR setup (FAPI2)
+///
+/// @author Joe McGill <jmcgill@us.ibm.com>
+///
+
+//
+// *HWP HWP Owner: Joe McGill <jmcgill@us.ibm.com>
+// *HWP FW Owner: Thi Tran <thi@us.ibm.com>
+// *HWP Team: Nest
+// *HWP Level: 3
+// *HWP Consumed by: HB
+//
+
+#ifndef _P9_OBUS_EXTFIR_SETUP_H_
+#define _P9_OBUS_EXTFIR_SETUP_H_
+
+
+//------------------------------------------------------------------------------
+// Includes
+//------------------------------------------------------------------------------
+#include <fapi2.H>
+
+//------------------------------------------------------------------------------
+// Structure definitions
+//------------------------------------------------------------------------------
+
+/// function pointer typedef definition for HWP call support
+typedef fapi2::ReturnCode (*p9_obus_extfir_setup_FP_t) (
+    const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>&,
+    const bool,
+    const bool,
+    const bool,
+    const bool);
+
+//------------------------------------------------------------------------------
+// Function prototypes
+//------------------------------------------------------------------------------
+
+extern "C"
+{
+
+///
+/// @brief Setup FBC EXTFIR for selected obus links
+///
+/// @param[in] i_target         Reference to processor chip target
+/// @param[in] i_o0_smp_active  OBUS0 active as fabric link?
+/// @param[in] i_o1_smp_active  OBUS1 active as fabric link?
+/// @param[in] i_o2_smp_active  OBUS2 active as fabric link?
+/// @param[in] i_o3_smp_active  OBUS3 active as fabric link?
+///
+/// @return fapi::ReturnCode. FAPI2_RC_SUCCESS if success, else error code.
+///
+    fapi2::ReturnCode p9_obus_extfir_setup(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target,
+                                           const bool i_o0_smp_active,
+                                           const bool i_o1_smp_active,
+                                           const bool i_o2_smp_active,
+                                           const bool i_o3_smp_active);
+
+} // extern "C"
+
+#endif // _P9_OBUS_EXTFIR_SETUP_H_
diff --git a/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.mk b/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.mk
new file mode 100644
index 000000000..96313c74e
--- /dev/null
+++ b/src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.mk
@@ -0,0 +1,26 @@
+# IBM_PROLOG_BEGIN_TAG
+# This is an automatically generated prolog.
+#
+# $Source: src/import/chips/p9/procedures/hwp/nest/p9_obus_extfir_setup.mk $
+#
+# 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
+PROCEDURE=p9_obus_extfir_setup
+$(call BUILD_PROCEDURE)