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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/hwp/nest/p9_npu_scominit.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_npu_scominit.C
/// @brief Apply SCOM overrides for the NPU, enable NVLINK refclocks
///
// *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_npu_scominit.H>
#include <p9_npu_scom.H>
#include <p9_nv_ref_clk_enable.H>
#include <p9_misc_scom_addresses.H>
#include <p9_misc_scom_addresses_fld.H>
//------------------------------------------------------------------------------
// Constant definitions
//------------------------------------------------------------------------------
const uint64_t PU_NPU_SM2_XTS_ATRMISS_POST_P9NDD1 = 0x501164AULL;
//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------
/// NOTE: description in header
fapi2::ReturnCode p9_npu_scominit(
const fapi2::Target<fapi2::TARGET_TYPE_PROC_CHIP>& i_target)
{
FAPI_DBG("Entering ...");
uint8_t l_npu_enabled;
// check to see if NPU region in N3 chiplet is enabled
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_PROC_NPU_REGION_ENABLED,
i_target,
l_npu_enabled),
"Error from FAPI_ATTR_GET (ATTR_PROC_NPU_REGION_ENABLED)");
if (l_npu_enabled)
{
fapi2::ReturnCode l_rc;
fapi2::buffer<uint64_t> l_atrmiss = 0;
fapi2::ATTR_CHIP_EC_FEATURE_SETUP_BARS_NPU_DD1_ADDR_Type l_npu_p9n_dd1;
// read attribute to determine if P9N DD1 NPU addresses should be used
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CHIP_EC_FEATURE_SETUP_BARS_NPU_DD1_ADDR,
i_target,
l_npu_p9n_dd1),
"Error from FAPI_ATTR_GET (ATTR_CHIP_EC_FEATURE_SETUP_BARS_NPU_DD1_ADDR)");
// apply NPU SCOM inits from initfile
FAPI_DBG("Invoking p9.npu.scom.initfile...");
FAPI_EXEC_HWP(l_rc,
p9_npu_scom,
i_target,
fapi2::Target<fapi2::TARGET_TYPE_SYSTEM>());
if (l_rc)
{
FAPI_ERR("Error from p9.npu.scom.initfile");
fapi2::current_err = l_rc;
goto fapi_try_exit;
}
// apply additional SCOM inits
l_atrmiss.setBit<PU_NPU_SM2_XTS_ATRMISS_FLAG_MAP>()
.setBit<PU_NPU_SM2_XTS_ATRMISS_ENA>();
FAPI_TRY(fapi2::putScomUnderMask(i_target,
((l_npu_p9n_dd1) ?
(PU_NPU_SM2_XTS_ATRMISS) :
(PU_NPU_SM2_XTS_ATRMISS_POST_P9NDD1)),
l_atrmiss,
l_atrmiss),
"Error from putScomUnderMask (0x%08X)",
((l_npu_p9n_dd1) ?
(PU_NPU_SM2_XTS_ATRMISS) :
(PU_NPU_SM2_XTS_ATRMISS_POST_P9NDD1)));
// enable NVLINK refclocks
FAPI_DBG("Invoking p9_nv_ref_clk_enable...");
FAPI_EXEC_HWP(l_rc, p9_nv_ref_clk_enable, i_target);
if (l_rc)
{
FAPI_ERR("Error from p9_nv_ref_clk_enable");
fapi2::current_err = l_rc;
goto fapi_try_exit;
}
}
else
{
FAPI_DBG("Skipping NPU initialization");
}
fapi_try_exit:
FAPI_DBG("Exiting ...");
return fapi2::current_err;
}
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