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p9_revert_sbe_mcs_setup.C
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p9_revert_sbe_mcs_setup.C
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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/nest/p9_revert_sbe_mcs_setup.C $ */
/* */
/* 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_revert_sbe_mcs_setup.C
/// @brief Revert MC configuration applied by SBE (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: 2
// *HWP Consumed by: HB
//
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <p9_revert_sbe_mcs_setup.H>
#include <p9_perv_scom_addresses.H>
#include <p9_mc_scom_addresses.H>
#include <p9_mc_scom_addresses_fld.H>
//------------------------------------------------------------------------------
// Constant definitions
//------------------------------------------------------------------------------
// MCS target type constants
const uint8_t NUM_MCS_TARGETS = 4;
const uint64_t MCS_CPLT_CTRL1_ARR[NUM_MCS_TARGETS] =
{
PERV_N3_CPLT_CTRL1,
PERV_N3_CPLT_CTRL1,
PERV_N1_CPLT_CTRL1,
PERV_N1_CPLT_CTRL1
};
const uint64_t MCS_CPLT_CTRL1_BIT_ARR[NUM_MCS_TARGETS] =
{
10,
10,
9,
9
};
const uint64_t MCS_MCFGP_ARR[NUM_MCS_TARGETS] =
{
MCS_0_MCFGP,
MCS_1_MCFGP,
MCS_2_MCFGP,
MCS_3_MCFGP
};
const uint64_t MCS_MCMODE1_ARR[NUM_MCS_TARGETS] =
{
MCS_0_MCMODE1,
MCS_1_MCMODE1,
MCS_2_MCMODE1,
MCS_3_MCMODE1
};
const uint64_t MCS_MCFIRMASK_OR_ARR[NUM_MCS_TARGETS] =
{
MCS_0_MCFIRMASK_OR,
MCS_1_MCFIRMASK_OR,
MCS_2_MCFIRMASK_OR,
MCS_3_MCFIRMASK_OR
};
//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------
// helper function for MCS target type
fapi2::ReturnCode
revert_mcs_hb_dcbz_config(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target,
const uint8_t i_mcs)
{
FAPI_DBG("Start");
fapi2::buffer<uint64_t> l_cplt_ctrl1;
fapi2::buffer<uint64_t> l_mcfgp;
fapi2::buffer<uint64_t> l_mcmode1;
fapi2::buffer<uint64_t> l_mcfirmask;
FAPI_TRY(fapi2::getScom(i_target, MCS_CPLT_CTRL1_ARR[i_mcs], l_cplt_ctrl1),
"Error from getscom (CPLT_CTRL1)");
if (!l_cplt_ctrl1.getBit(MCS_CPLT_CTRL1_BIT_ARR[i_mcs]))
{
// MCFGP -- mark BAR invalid & reset grouping configuration fields
FAPI_TRY(fapi2::getScom(i_target, MCS_MCFGP_ARR[i_mcs], l_mcfgp),
"Error from getScom (MCS%d_MCFGP)", i_mcs);
l_mcfgp.clearBit<MCS_MCFGP_VALID>();
l_mcfgp.clearBit<MCS_MCFGP_MC_CHANNELS_PER_GROUP,
MCS_MCFGP_MC_CHANNELS_PER_GROUP_LEN>();
l_mcfgp.clearBit<MCS_MCFGP_CHANNEL_0_GROUP_MEMBER_IDENTIFICATION,
MCS_MCFGP_CHANNEL_0_GROUP_MEMBER_IDENTIFICATION_LEN>();
l_mcfgp.clearBit<MCS_MCFGP_GROUP_SIZE, MCS_MCFGP_GROUP_SIZE_LEN>();
FAPI_TRY(fapi2::putScom(i_target, MCS_MCFGP_ARR[i_mcs], l_mcfgp),
"Error from putScom (MCS%d_MCFGP)", i_mcs);
// MCMODE1 -- enable speculation
FAPI_TRY(fapi2::getScom(i_target, MCS_MCMODE1_ARR[i_mcs], l_mcmode1),
"Error from getScom (MCS%d_MCMODE1)", i_mcs);
l_mcmode1.clearBit<MCS_MCMODE1_DISABLE_ALL_SPEC_OPS>();
l_mcmode1.clearBit<MCS_MCMODE1_DISABLE_SPEC_OP,
MCS_MCMODE1_DISABLE_SPEC_OP_LEN>();
FAPI_TRY(fapi2::putScom(i_target, MCS_MCMODE1_ARR[i_mcs], l_mcmode1),
"Error from putScom (MCS%d_MCMODE1)", i_mcs);
// Re-mask MCFIR. We want to ensure all MCSs are masked
// until the BARs are opened later during IPL.
l_mcfirmask.flush<1>();
FAPI_TRY(fapi2::putScom(i_target, MCS_MCFIRMASK, l_mcfirmask),
"Error from putScom (MCS_MCFIRMASK)");
}
fapi_try_exit:
FAPI_DBG("End");
return fapi2::current_err;
}
// helper function for MI target type
fapi2::ReturnCode
revert_mi_hb_dcbz_config(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target)
{
FAPI_DBG("Start");
// TODO: implement for Cumulus/MI target type
(void) i_target;
goto fapi_try_exit;
fapi_try_exit:
FAPI_DBG("End");
return fapi2::current_err;
}
// HWP entry point
fapi2::ReturnCode
p9_revert_sbe_mcs_setup(const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target)
{
FAPI_INF("Start");
fapi2::Target<fapi2::TARGET_TYPE_SYSTEM> FAPI_SYSTEM;
fapi2::ATTR_SYSTEM_IPL_PHASE_Type l_ipl_phase;
auto l_mcs_chiplets = i_target.getChildren<fapi2::TARGET_TYPE_MCS>(fapi2::TARGET_STATE_PRESENT);
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_SYSTEM_IPL_PHASE, FAPI_SYSTEM, l_ipl_phase),
"Error from FAPI_ATTR_GET (ATTR_SYSTEM_IPL_PHASE)");
if (l_ipl_phase == fapi2::ENUM_ATTR_SYSTEM_IPL_PHASE_CHIP_CONTAINED)
{
FAPI_INF("Leaving MC BAR configured for chip contained execution");
goto fapi_try_exit;
}
if (l_mcs_chiplets.size())
{
for (uint8_t l_mcs = 0; l_mcs < NUM_MCS_TARGETS; l_mcs++)
{
FAPI_TRY(revert_mcs_hb_dcbz_config(i_target, l_mcs),
"Error from revert_mcs_hb_dcbz_config");
}
}
else
{
FAPI_TRY(revert_mi_hb_dcbz_config(i_target),
"Error from revert_mi_hb_dcbz_config");
}
fapi_try_exit:
FAPI_INF("End");
return fapi2::current_err;
}