SLW: Add support for p9_stop_api

p9_stop_api's are used to set SPR state on a core wakeup form a  deeper
low power state. p9_stop_api uses  low level platform formware and
self-restore microcode to restore the sprs to requested values.

Code is taken from :
https://github.com/open-power/hostboot/tree/master/src/import/chips/p9/procedures/utils/stopreg

Signed-off-by: Akshay Adiga <akshay.adiga@linux.vnet.ibm.com>
Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

1 files changed, 76 insertions, 0 deletions

diff --git a/libpore/p9_cpu_reg_restore_instruction.H b/libpore/p9_cpu_reg_restore_instruction.H
new file mode 100644
index 00000000..e5689ae8
--- /dev/null
+++ b/libpore/p9_cpu_reg_restore_instruction.H
@@ -0,0 +1,76 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/import/chips/p9/procedures/utils/stopreg/p9_cpu_reg_restore_instruction.H $ */
+/*                                                                        */
+/* OpenPOWER HostBoot Project                                             */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2015,2017                        */
+/* [+] 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_cpu_reg_restore_instruction.H
+/// @brief  enumerates all the opcodes used for SPR restoration.
+///
+// *HWP HW Owner    :  Greg Still <stillgs@us.ibm.com>
+// *HWP FW Owner    :  Prem Shanker Jha <premjha2@in.ibm.com>
+// *HWP Team        :  PM
+// *HWP Level       :  2
+// *HWP Consumed by :  HB:HYP
+
+#ifndef __REG_RESTORE_INSTRUCTION_H
+#define __REG_RESTORE_INSTRUCTION_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+
+namespace stopImageSection
+{
+#endif
+
+/**
+ * @brief enumerates opcodes for few instructions.
+ */
+enum
+{
+    ORI_OPCODE        = 24,
+    RFI_OPCODE        = 19,
+    RFI_CONST         = 50,
+    ORIS_OPCODE       = 25,
+    OPCODE_31         = 31,
+    XOR_CONST         = 316,
+    RLDICR_OPCODE     = 30,
+    RLDICR_CONST      = 1,
+    MTSPR_CONST1      = 467,
+    MTMSRD_CONST1     = 178,
+    MR_R0_TO_R10      = 0x7c0a0378, //mr r10, r0
+    MR_R0_TO_R21      = 0x7c150378, //mr r21, r0
+    BLR_INST          = 0x4e800020,
+    MTSPR_BASE_OPCODE = 0x7c0003a6,
+    ATTN_OPCODE       = 0x00000200,
+};
+
+#ifdef __cplusplus
+} // namespace stopImageSection ends
+
+} // extern "C"
+#endif //__cplusplus
+
+#endif //__REG_RESTORE_INSTRUCTION_H