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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/ocmb/explorer/procedures/hwp/memory/exp_getidec.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 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_getidec.C
/// @brief Contains function to lookup Chip ID and EC values of Explorer Chip
///
/// *HWP HWP Owner: Christian Geddes <crgeddes@us.ibm.com>
/// *HWP HWP Backup: <none>
/// *HWP Team: Hostboot
/// *HWP Level: 2
/// *HWP Consumed by: Hostboot / Cronus
#include <fapi2.H>
#include <exp_getidec.H>
#include <lib/shared/exp_consts.H>
#include <chips/ocmb/explorer/common/include/explorer_scom_addresses.H>
#include <chips/ocmb/explorer/common/include/explorer_scom_addresses_fixes.H>
#include <chips/ocmb/explorer/common/include/explorer_scom_addresses_fld.H>
#include <chips/ocmb/explorer/common/include/explorer_scom_addresses_fld_fixes.H>
#include <generic/memory/mss_git_data_helper.H>
extern "C"
{
///
/// @brief Lookup the Chip ID and EC level values for this explorer chip
/// @param[in] i_target Explorer OCMB chip
/// @param[out] o_chipId Explorer Chip ID
/// @param[out] o_chipEc Explorer Chip EC
/// @return fapi2:ReturnCode FAPI2_RC_SUCCESS if success, else error code.
///
fapi2::ReturnCode exp_getidec(const fapi2::Target<fapi2::TARGET_TYPE_OCMB_CHIP>& i_target,
uint16_t& o_chipId,
uint8_t& o_chipEc)
{
mss::display_git_commit_info("exp_getidec");
uint8_t l_majorEc = 0;
uint8_t l_minorEc = 0;
uint8_t l_location = 0;
uint8_t l_chipBaseId = 0;
fapi2::buffer<uint64_t> l_reg_buffer;
FAPI_TRY(fapi2::getScom( i_target,
static_cast<uint64_t>(mss::exp::idec_consts::EXPLR_CHIP_INFO_REG),
l_reg_buffer ),
"exp_getidec: could not read explorer chip_info register register 0x%08x",
mss::exp::idec_consts::EXPLR_CHIP_INFO_REG);
l_reg_buffer.extractToRight<mss::exp::idec_consts::MAJOR_EC_BIT_START,
mss::exp::idec_consts::MAJOR_EC_BIT_LENGTH>(l_majorEc);
l_reg_buffer.extractToRight<mss::exp::idec_consts::LOCATION_BIT_START,
mss::exp::idec_consts::LOCATION_BIT_LENGTH>(l_location);
l_reg_buffer.extractToRight<mss::exp::idec_consts::CHIPID_BIT_START,
mss::exp::idec_consts::CHIPID_BIT_LENGTH>(l_chipBaseId);
// Due to design errors we must read the minor ec (2nd nibble) from a different register
FAPI_TRY(fapi2::getScom( i_target, static_cast<uint64_t>(EXPLR_EFUSE_IMAGE_OUT_3), l_reg_buffer ),
"exp_getidec: could not read explorer efuse_out3 register 0x%08x", EXPLR_EFUSE_IMAGE_OUT_3);
l_reg_buffer.extractToRight<EXPLR_EFUSE_IMAGE_OUT_3_ENTERPRISE_MODE_EC_MINOR,
EXPLR_EFUSE_IMAGE_OUT_3_ENTERPRISE_MODE_EC_MINOR_LEN>(l_minorEc);
// Major EC 0:3
// Minor EC 4:7
o_chipEc = (l_majorEc << 4) | l_minorEc;
// Location 0:3
// Empty 4:7
// ChipId 8:15
o_chipId = (l_location << 12) | l_chipBaseId;
FAPI_DBG("EC found 0x%.02x chipId found 0x%.04x", o_chipEc, o_chipId);
fapi_try_exit:
return fapi2::current_err;
}
} // extern "C"
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