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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/ocmb/explorer/procedures/hwp/memory/exp_omi_setup.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2018,2019 */
/* [+] 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 exp_omi_setup.C
/// @brief Contains the explorer OMI setup
///
// *HWP HWP Owner: Andre Marin <aamarin@us.ibm.com>
// *HWP HWP Backup: Stephen Glancy <sglancy@us.ibm.com>
// *HWP Team: Memory
// *HWP Level: 3
// *HWP Consumed by: Memory
#include <fapi2.H>
#include <generic/memory/lib/utils/c_str.H>
#include <lib/exp_attribute_accessors_manual.H>
#include <lib/omi/exp_omi_utils.H>
#include <lib/workarounds/exp_omi_workarounds.H>
#include <lib/i2c/exp_i2c.H>
#include <generic/memory/mss_git_data_helper.H>
#include <generic/memory/lib/mss_generic_attribute_getters.H>
#include <generic/memory/lib/mss_generic_system_attribute_getters.H>
extern "C"
{
///
/// @brief Setup the OCMB for enterprise and half-DIMM modes as desired
/// @param[in] i_target the OCMB target to operate on
/// @return FAPI2_RC_SUCCESS iff ok
///
fapi2::ReturnCode exp_omi_setup( const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>& i_target)
{
mss::display_git_commit_info("exp_omi_setup");
// Declares variables
fapi2::buffer<uint64_t> l_data;
fapi2::buffer<uint64_t> dlx_config1_data;
uint8_t l_edpl_disable = 0;
bool l_is_enterprise = false;
bool l_is_half_dimm = false;
bool l_workaround_required = false;
std::vector<uint8_t> l_boot_config_data;
uint8_t l_dl_layer_boot_mode = fapi2::ENUM_ATTR_MSS_OCMB_EXP_BOOT_CONFIG_DL_LAYER_BOOT_MODE_NON_DL_TRAINING;
uint8_t l_gem_menterp_workaround = 0;
// Gets the data setup
FAPI_TRY(mss::exp::omi::train::setup_fw_boot_config(i_target, l_boot_config_data));
// Sanity check: set dl_layer_boot_mode to NON DL TRAINING (0b00 == default)
FAPI_TRY(mss::exp::i2c::boot_cfg::set_dl_layer_boot_mode( i_target, l_boot_config_data, l_dl_layer_boot_mode ));
// Issues the command and checks for completion
// Note: This does not kick off OMI training
FAPI_TRY(mss::exp::i2c::boot_config(i_target, l_boot_config_data));
FAPI_TRY(mss::exp::workarounds::omi::gem_menterp(i_target, l_gem_menterp_workaround));
// If no workaround, we can perform menterp reads/writes (explorer)
// If workaround (gem). we need to bypass menterp. Can also bypass dlx_config1 since it's a noop
if (!l_gem_menterp_workaround)
{
// Gets the configuration information from attributes
FAPI_TRY(mss::enterprise_mode(i_target, l_is_enterprise));
FAPI_TRY(mss::half_dimm_mode(i_target, l_is_half_dimm));
FAPI_TRY(mss::attr::get_mss_omi_edpl_disable(l_edpl_disable));
// Prints out the data
FAPI_INF("%s is %s enterprise mode, and %s-DIMM mode", mss::c_str(i_target), l_is_enterprise ? "" : "non",
l_is_half_dimm ? "half" : "full");
// Sets up the register
mss::exp::omi::set_enterprise_set_bit(l_data, l_is_enterprise);
mss::exp::omi::set_half_dimm_mode(l_data, l_is_half_dimm);
// Writes the data to the register
FAPI_TRY(mss::exp::omi::write_enterprise_config(i_target, l_data));
// Checks that the chip is configured correctly
FAPI_TRY(mss::exp::omi::read_enterprise_config(i_target, l_data));
FAPI_TRY(mss::exp::omi::check_enterprise_mode(i_target, l_is_enterprise, l_data));
// Set the EDPL according the attribute
FAPI_TRY(mss::exp::omi::read_dlx_config1(i_target, dlx_config1_data));
mss::exp::omi::set_edpl_enable_bit(dlx_config1_data, l_edpl_disable);
FAPI_TRY(mss::exp::omi::write_dlx_config1(i_target, dlx_config1_data));
FAPI_INF("%s EDPL enable: %s", mss::c_str(i_target), l_edpl_disable ? "false" : "true");
}
// Run the workaround if it's needed
FAPI_TRY(mss::exp::workarounds::omi::is_prbs_ocmb_required(i_target, l_workaround_required));
if (l_workaround_required)
{
uint8_t l_dl_x4_backoff_en = 0;
FAPI_TRY(FAPI_ATTR_GET(fapi2::ATTR_CHIP_EC_FEATURE_OMI_DL_X4_BACKOFF_ENABLE, i_target, l_dl_x4_backoff_en),
"Error getting ATTR_CHIP_EC_FEATURE_OMI_DL_X4_BACKOFF_ENABLE");
FAPI_TRY(mss::exp::workarounds::omi::prbs_ocmb(i_target, l_dl_x4_backoff_en));
}
fapi_try_exit:
return fapi2::current_err;
}
}
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