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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/hwpf/hwp/slave_sbe/proc_check_slave_sbe_seeprom_complete/proc_reset_i2cm_bus_fence.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 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 */
// $Id: proc_reset_i2cm_bus_fence.C,v 1.1 2014/02/18 19:53:44 jmcgill Exp $
// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/ipl/fapi/proc_reset_i2cm_bus_fence.C,v $
//------------------------------------------------------------------------------
// *! (C) Copyright International Business Machines Corp. 2012
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
//------------------------------------------------------------------------------
// *! TITLE : proc_reset_i2cm_bus_fence.C
// *! DESCRIPTION : Clear i2cm bus fence to restore FSP access (FAPI)
// *!
// *! OWNER NAME : Joe McGill Email: jmcgill@us.ibm.com
// *!
// *! ADDITIONAL COMMENTS :
// *!
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include <proc_reset_i2cm_bus_fence.H>
#include <p8_scom_addresses.H>
//------------------------------------------------------------------------------
// Constant definitions
//------------------------------------------------------------------------------
const uint32_t CFAM_FSI_GP4_I2CM_BUS_FENCE_BIT = 20;
//------------------------------------------------------------------------------
// Function definitions
//------------------------------------------------------------------------------
extern "C" {
// HWP entry point, comments in header
fapi::ReturnCode proc_reset_i2cm_bus_fence(const fapi::Target & i_target)
{
fapi::ReturnCode rc;
uint32_t rc_ecmd = 0;
ecmdDataBufferBase cfam_data(32);
// mark HWP entry
FAPI_INF("proc_reset_i2cm_bus_fence: Start");
do
{
// read FSI GP4
rc = fapiGetCfamRegister(i_target, CFAM_FSI_GP4_0x00002813, cfam_data);
if (!rc.ok())
{
FAPI_ERR("proc_reset_i2cm_bus_fence: Error from fapiGetCfamRegister (CFAM_FSI_GP4_0x00002813)");
break;
}
// clear fence bit
rc_ecmd |= cfam_data.clearBit(CFAM_FSI_GP4_I2CM_BUS_FENCE_BIT);
if (rc_ecmd)
{
FAPI_ERR("proc_reset_i2cm_bus_fence: Error 0x%x forming FSI GP4 register write data buffer",
rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
// write back modified data
rc = fapiPutCfamRegister(i_target, CFAM_FSI_GP4_0x00002813, cfam_data);
if (!rc.ok())
{
FAPI_ERR("proc_reset_i2cm_bus_fence: Error from fapiGetCfamRegister (CFAM_FSI_GP4_0x00002813)");
break;
}
} while(0);
// mark HWP exit
FAPI_INF("proc_reset_i2cm_bus_fence: End");
return rc;
}
} // extern "C"
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