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/* 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
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