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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/pm/p9_pm_pstate_gpe_init.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_pm_pstate_gpe_init.H
/// @brief Initialize the STOP GPE Engine in the OCC
///
// *HWP HWP Owner : Greg Still <stillgs@us.ibm.com>
// *HWP Backup Owner : Rahul Batra <rbatra@us.ibm.com>
// *HWP FW Owner : Prem S Jha <premjha2@in.ibm.com>
// *HWP Team : PM
// *HWP Level : 3
// *HWP Consumed by : HS
///
/// High-level procedure flow:
/// @verbatim
/// if PM_RESET
/// - Halt the PGPE
/// if PM_INIT
/// - Read the PGPE IVPR value, the address of boot copier in HOMER region.
/// - clear OCC Scratch2 flag indicating HCode init completion.
/// - Write to XCR to activate the PGPE
/// - Poll OCC Scratch 2 flag for HCode init completion
/// - Call p9_pm_pba_init in PM_INIT mode to activate the PBA channels for
/// runtime configuration.
/// @endverbatim
#ifndef _P9_PSTATE_GPEINIT_H_
#define _P9_PSTATE_GPEINIT_H_
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <p9_pm.H>
#include <fapi2.H>
#include <p9_misc_scom_addresses.H>
#include <p9_hcd_common.H>
#include <p9_pm_hcd_flags.h>
#include <p9_pm_pba_init.H>
// function pointer typedef definition for HWP call support
typedef fapi2::ReturnCode (*p9_pm_pstate_gpe_init_FP_t) (
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>&,
const p9pm::PM_FLOW_MODE);
// -----------------------------------------------------------------------------
// Function prototype
// -----------------------------------------------------------------------------
extern "C" {
/// @addtogroup pm_fapi
/// @{
/// @brief Initialize the Pstate GPE Engine in the OCC
///
/// @param [in] i_target Chip target
/// @param [in] i_mode Control mode PM_INIT, PM_RESET
///
/// @retval FAPI2_RC_SUCCESS on success, else error RC
///
fapi2::ReturnCode p9_pm_pstate_gpe_init(
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target,
const p9pm::PM_FLOW_MODE i_mode);
/// @} end addtogroup
} // extern "C"
#endif // _P9_PSTATE_GPEINIT_H_
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