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Diffstat (limited to 'src/usr/fapi2/plat_spd_access.C')
| -rw-r--r-- | src/usr/fapi2/plat_spd_access.C | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/usr/fapi2/plat_spd_access.C b/src/usr/fapi2/plat_spd_access.C new file mode 100644 index 000000000..c8466f5da --- /dev/null +++ b/src/usr/fapi2/plat_spd_access.C @@ -0,0 +1,131 @@ +/* IBM_PROLOG_BEGIN_TAG */ +/* This is an automatically generated prolog. */ +/* */ +/* $Source: src/usr/fapi2/plat_spd_access.C $ */ +/* */ +/* OpenPOWER HostBoot Project */ +/* */ +/* Contributors Listed Below - COPYRIGHT 2015,2016 */ +/* [+] 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 plat_attribute_service.C +/// +/// @brief Implements the specialized platform functions that access +/// attributes for FAPI2 +/// + +#include <attribute_service.H> +#include <target_types.H> +#include <errl/errlentry.H> +#include <errl/errlmanager.H> +#include <fapi2_spd_access.H> + +namespace fapi2 +{ + +//****************************************************************************** +// Function : getSPD() +// Return a blob of SPD data from a DIMM +//****************************************************************************** +fapi2::ReturnCode getSPD( + const fapi2::Target<fapi2::TARGET_TYPE_DIMM>& i_pTarget, + uint8_t * o_blob, + size_t& o_size) +{ + FAPI_DBG(ENTER_MRK "getSPD"); + + const uint8_t MEM_DDR3 = 0xB; + const uint8_t MEM_DDR4 = 0xC; + const uint32_t DDR3_KEYWORD_SIZE = 256; + const uint32_t DDR4_KEYWORD_SIZE = 512; + + errlHndl_t l_errl = NULL; + fapi2::ReturnCode l_rc; + TARGETING::Target* l_pTarget = NULL; + + do + { + l_errl = fapi2::platAttrSvc::getTargetingTarget(i_pTarget, + l_pTarget, + TARGETING::TYPE_DIMM); + if (l_errl) + { + FAPI_ERR("getSPD: Error from getTargetingTarget"); + break; + } + + // If the caller passed a nullptr for blob then + // return size of the SPD + if ( o_blob == NULL ) + { + // Get the DDR device type from SPD + uint8_t l_memType = 0x0; + size_t l_memSize = sizeof(l_memType); + + l_errl = deviceRead(l_pTarget, + (void *)&l_memType, + l_memSize, + DEVICE_SPD_ADDRESS(SPD::BASIC_MEMORY_TYPE)); + + if ( !l_errl ) + { + if ( l_memType == MEM_DDR3 ) + { + o_size = DDR3_KEYWORD_SIZE; + } + else if ( l_memType == MEM_DDR4 ) + { + o_size = DDR4_KEYWORD_SIZE; + } + else + { + FAPI_ERR("getSPD: Invalid DIMM DDR Type"); + break; + } + + FAPI_DBG("getSPD: Returning the size of the SPD :%d ", o_size); + } + } + else + { + l_errl = deviceRead(l_pTarget, + o_blob, + o_size, + DEVICE_SPD_ADDRESS(SPD::ENTIRE_SPD)); + } + + break; + + } while(0); + + if ( l_errl ) + { + FAPI_ERR("getSPD: Error getting SPD data for HUID=0x%.8X Size %d", + TARGETING::get_huid(l_pTarget),o_size); + + l_rc.setPlatDataPtr(reinterpret_cast<void *> (l_errl)); + } + + FAPI_DBG("getSPD: SPD data for HUID=0x%.8X Size %d Blob %d", + TARGETING::get_huid(l_pTarget),o_size,o_blob); + + FAPI_DBG(EXIT_MRK "getSPD"); + return l_rc; +} + +} // End fapi2 namespace |
