/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
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/* $Source: src/import/chips/p9/procedures/hwp/perv/p9_nv_ref_clk_enable.C $ */
/*                                                                        */
/* OpenPOWER HostBoot Project                                             */
/*                                                                        */
/* Contributors Listed Below - COPYRIGHT 2016,2017                        */
/* [+] International Business Machines Corp.                              */
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/* Licensed under the Apache License, Version 2.0 (the "License");        */
/* you may not use this file except in compliance with the License.       */
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/* IBM_PROLOG_END_TAG                                                     */
///
/// @file p9_nv_ref_clk_enable.C
/// @brief Enable NV reference clocks (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: Perv
// *HWP Level: 3
// *HWP Consumed by: HB
//

//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <p9_nv_ref_clk_enable.H>
#include <p9_perv_scom_addresses.H>
#include <p9_perv_scom_addresses_fld.H>


//------------------------------------------------------------------------------
// Constant definitions
//------------------------------------------------------------------------------
const uint16_t TPFSI_OFFCHIP_REFCLK_EN_NV = 0xF;

//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------

fapi2::ReturnCode
p9_nv_ref_clk_enable(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target)
{
    FAPI_INF("Start");
    fapi2::buffer<uint64_t> l_root_ctrl6;
    FAPI_TRY(fapi2::getScom(i_target, PERV_ROOT_CTRL6_SCOM, l_root_ctrl6),
             "Error from getScom (PERV_ROOT_CTRL6_SCOM)");
    l_root_ctrl6.insertFromRight<PERV_ROOT_CTRL6_TSFSI_NV_REFCLK_EN_DC,
                                 PERV_ROOT_CTRL6_TSFSI_NV_REFCLK_EN_DC_LEN>(TPFSI_OFFCHIP_REFCLK_EN_NV);
    FAPI_TRY(fapi2::putScom(i_target, PERV_ROOT_CTRL6_SCOM, l_root_ctrl6),
             "Error from putScom (PERV_ROOT_CTRL6_SCOM)");

fapi_try_exit:
    FAPI_INF("End");
    return fapi2::current_err;
}