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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/hwpf/hwp/core_activate/proc_stop_deadman_timer/proc_stop_deadman_timer.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 2012,2014 */
/* */
/* 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 */
// -*- mode: C++; c-file-style: "linux"; -*-
// $Id: proc_stop_deadman_timer.C,v 1.10 2014/02/10 04:40:32 stillgs Exp $
// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/ipl/fapi/proc_stop_deadman_timer.C,v $
//------------------------------------------------------------------------------
// *|
// *! (C) Copyright International Business Machines Corp. 2012
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
// *|
// *! TITLE : proc_stop_deadman_timer.C
// *! DESCRIPTION : Stops deadman timer and SBE
// *!
// *! OWNER NAME : Greg Still Email: stillgs@us.ibm.com
// *!
// *! Overview:
// *! Notify SBE that HB is alive again
// *! Make sure SBE stopped
// *!
// *! Here's the flow of SBE_VITAL substeps:
// *! SBE (automatic on procedure entry): substep_proc_entry
// *! SBE : substep_sbe_ready
// *! HB (proc_prep_master_winkle) : substep_deadman_start
// *! SBE : substep_deadman_waiting_for_winkle
// *! SBE : substep_deadman_waiting_for_wakeup
// *! HB (proc_stop_deadman_timer) : substep_hostboot_alive_again
// *! SBE : (stops with error code 0xF to indicate success)
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <proc_stop_deadman_timer.H>
#include <p8_scom_addresses.H>
#include <p8_istep_num.H>
#include <proc_sbe_trigger_winkle.H>
//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------
extern "C"
{
//------------------------------------------------------------------------------
// function: proc_stop_deadman_timer
// Notify SBE that HB is alive again
// Force the SBE to stop running
//
// parameters: i_target => chip target
// returns: FAPI_RC_SUCCESS if operation was successful, else error
//------------------------------------------------------------------------------
fapi::ReturnCode proc_stop_deadman_timer(const fapi::Target & i_target)
{
// data buffer to hold register values
ecmdDataBufferBase data(64);
// return codes
uint32_t rc_ecmd = 0;
fapi::ReturnCode rc;
// mark function entry
FAPI_INF("Entry new\n");
do
{
// Given this procedure is running, the SBE deadman function did
// its job. Check that for the SBE_VITAL being at the correct spot
rc = fapiGetScom(i_target, MBOX_SBEVITAL_0x0005001C, data);
if(!rc.ok())
{
FAPI_ERR("Scom error reading SBE VITAL\n");
break;
}
uint32_t istep_num = 0;
uint8_t substep_num = 0;
rc_ecmd |= data.extractToRight(&istep_num,
ISTEP_NUM_BIT_POSITION,
ISTEP_NUM_BIT_LENGTH);
rc_ecmd |= data.extractToRight(&substep_num,
SUBSTEP_NUM_BIT_POSITION,
SUBSTEP_NUM_BIT_LENGTH);
if(rc_ecmd)
{
FAPI_ERR("Error (0x%x) setting up ecmdDataBufferBase", rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
if( istep_num != proc_sbe_trigger_winkle_istep_num )
{
FAPI_ERR("Expected istep num %llX but found %X\n",
proc_sbe_trigger_winkle_istep_num,
istep_num );
const fapi::Target & CHIP_IN_ERROR = i_target;
ecmdDataBufferBase & SBE_VITAL = data;
FAPI_SET_HWP_ERROR(rc, RC_PROC_STOP_DEADMAN_TIMER_BAD_ISTEP_NUM);
fapiLogError(rc);
}
if( substep_num != SUBSTEP_DEADMAN_WAITING_FOR_HOSTBOOT )
{
FAPI_ERR("Expected substep num %X but found %X\n",
SUBSTEP_DEADMAN_WAITING_FOR_HOSTBOOT,
substep_num );
const fapi::Target & CHIP_IN_ERROR = i_target;
ecmdDataBufferBase & SBE_VITAL = data;
FAPI_SET_HWP_ERROR(rc, RC_PROC_STOP_DEADMAN_TIMER_BAD_SUBSTEP_NUM);
fapiLogError(rc);
}
//Notify SBE that HB is alive again
substep_num = SUBSTEP_HOSTBOOT_ALIVE_AGAIN;
rc_ecmd |= data.insertFromRight(&substep_num,
SUBSTEP_NUM_BIT_POSITION,
SUBSTEP_NUM_BIT_LENGTH);
if(rc_ecmd)
{
FAPI_ERR("Error (0x%x) setting up ecmdDataBufferBase", rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
rc = fapiPutScom(i_target, MBOX_SBEVITAL_0x0005001C, data);
if(!rc.ok())
{
FAPI_ERR("Scom error updating SBE VITAL\n");
break;
}
// Stop SBE if needed
rc = fapiGetScom(i_target, PORE_SBE_CONTROL_0x000E0001, data);
if(!rc.ok())
{
FAPI_ERR("Scom error reading SBE STATUS\n");
break;
}
if( data.isBitSet( 0 ) )
{
FAPI_INF("SBE/Deadman timer successfully stopped\n");
break;
}
else
{
rc_ecmd |= data.setBit( 0 );
if(rc_ecmd)
{
FAPI_ERR("Error (0x%x) setting up ecmdDataBufferBase", rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
rc = fapiPutScom(i_target, PORE_SBE_CONTROL_0x000E0001, data);
if(!rc.ok())
{
FAPI_ERR("Scom error stopping SBE\n");
break;
}
}
// Reset the SBE so it can be used for MPIPL if needed
rc_ecmd |= data.flushTo0();
rc_ecmd |= data.setBit(0);
if(rc_ecmd)
{
FAPI_ERR("Error (0x%x) setting up ecmdDataBufferBase", rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
rc = fapiPutScom(i_target, PORE_SBE_RESET_0x000E0002, data);
if(!rc.ok())
{
FAPI_ERR("Scom error resetting SBE\n");
break;
}
} while (0);
// mark function exit
FAPI_INF("Exit");
return rc;
}
} // extern "C"
/* Local Variables: */
/* c-basic-offset: 4 */
/* End: */
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