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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/import/chips/p9/procedures/utils/stopreg/p9_stop_util.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2015,2018 */
/* [+] 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_stop_util.C
/// @brief implements some utilty functions for STOP API.
///
// *HWP HW Owner : Greg Still <stillgs@us.ibm.com>
// *HWP FW Owner : Prem Shanker Jha <premjha2@in.ibm.com>
// *HWP Team : PM
// *HWP Level : 2
// *HWP Consumed by : HB:HYP
#ifdef PPC_HYP
#include <HvPlicModule.H>
#endif
#include "p9_stop_api.H"
#include "p9_stop_util.H"
#include "p9_stop_data_struct.H"
#ifdef __cplusplus
namespace stopImageSection
{
#endif
//-----------------------------------------------------------------------
/**
* @brief Returns proc chip's fuse mode status.
* @param i_pImage points to start of chip's HOMER image.
* @param o_fusedMode points to fuse mode information.
* @return STOP_SAVE_SUCCESS if functions succeeds, error code otherwise.
*/
STATIC StopReturnCode_t isFusedMode( void* const i_pImage, bool* o_fusedMode )
{
StopReturnCode_t l_rc = STOP_SAVE_SUCCESS;
uint64_t cpmrCheckWord = 0;
*o_fusedMode = false;
do
{
HomerSection_t* pHomerDesc = ( HomerSection_t* ) i_pImage;
HomerImgDesc_t* pHomer = (HomerImgDesc_t*)( pHomerDesc->iv_interrruptHandler );
if( !i_pImage )
{
MY_ERR( "invalid pointer to HOMER image");
l_rc = STOP_SAVE_ARG_INVALID_IMG;
break;
}
cpmrCheckWord = SWIZZLE_8_BYTE(pHomer->cpmrMagicWord);
cpmrCheckWord = cpmrCheckWord >> 32;
if( CPMR_REGION_CHECK_WORD != cpmrCheckWord )
{
MY_ERR("corrupt or invalid HOMER image location 0x%016llx",
SWIZZLE_8_BYTE(pHomer->cpmrMagicWord) );
l_rc = STOP_SAVE_ARG_INVALID_IMG;
break;
}
if( (uint8_t) FUSED_CORE_MODE == pHomer->fusedModeStatus )
{
*o_fusedMode = true;
break;
}
if( (uint8_t) NONFUSED_CORE_MODE == pHomer->fusedModeStatus )
{
break;
}
MY_ERR("Unexpected value 0x%08x for fused mode. Bad or corrupt "
"HOMER location", pHomer->fusedModeStatus );
l_rc = STOP_SAVE_INVALID_FUSED_CORE_STATUS ;
}
while(0);
return l_rc;
}
//----------------------------------------------------------------------
StopReturnCode_t getCoreAndThread( void* const i_pImage, const uint64_t i_pir,
uint32_t* o_pCoreId, uint32_t* o_pThreadId )
{
StopReturnCode_t l_rc = STOP_SAVE_SUCCESS;
do
{
// for SPR restore using 'Virtual Thread' and 'Physical Core' number
// In Fused Mode:
// bit b28 and b31 of PIR give physical core and b29 and b30 gives
// virtual thread id.
// In Non Fused Mode
// bit 28 and b29 of PIR give both logical and physical core number
// whereas b30 and b31 gives logical and virtual thread id.
bool fusedMode = false;
uint8_t coreThreadInfo = (uint8_t)i_pir;
*o_pCoreId = 0;
*o_pThreadId = 0;
l_rc = isFusedMode( i_pImage, &fusedMode );
if( l_rc )
{
MY_ERR(" Checking Fused mode. Read failed 0x%08x", l_rc );
break;
}
if( fusedMode )
{
if( coreThreadInfo & FUSED_CORE_BIT1 )
{
*o_pThreadId = 2;
}
if( coreThreadInfo & FUSED_CORE_BIT2 )
{
*o_pThreadId += 1;
}
if( coreThreadInfo & FUSED_CORE_BIT0 )
{
*o_pCoreId = 2;
}
if( coreThreadInfo & FUSED_CORE_BIT3 )
{
*o_pCoreId += 1;
}
}
else
{
if( coreThreadInfo & FUSED_CORE_BIT0 )
{
*o_pCoreId = 2;
}
if ( coreThreadInfo & FUSED_CORE_BIT1 )
{
*o_pCoreId += 1;
}
if( coreThreadInfo & FUSED_CORE_BIT2 )
{
*o_pThreadId = 2;
}
if( coreThreadInfo & FUSED_CORE_BIT3 )
{
*o_pThreadId += 1;
}
}
MY_INF("Core Type %s", fusedMode ? "Fused" : "Un-Fused" );
//quad field is not affected by fuse mode
*o_pCoreId += 4 * (( coreThreadInfo & 0x70 ) >> 4 );
}
while(0);
return l_rc;
}
#ifdef __cplusplus
}//namespace stopImageSection ends
#endif
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