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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/hwpf/hwp/dram_initialization/host_mpipl_service/proc_mpipl_ex_cleanup.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 */
// $Id: proc_mpipl_ex_cleanup.C,v 1.6 2013/08/20 17:31:41 stillgs Exp $
// $Source: /afs/awd/projects/eclipz/KnowledgeBase/.cvsroot/eclipz/chips/p8/working/procedures/ipl/fapi/proc_mpipl_ex_cleanup.C,v $
//------------------------------------------------------------------------------
// *|
// *! (C) Copyright International Business Machines Corp. 2012
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
// *|
// *! TITLE : proc_mpipl_ex_cleanup.C
// *! DESCRIPTION : Undo step that prepared fast-winkled cores for scanning and set up deep winkle mode
// *!
// *! OWNER NAME : Dion Bell Email: belldi@us.ibm.com
// *! BACKUP NAME : Dion Bell Email: belldi@us.ibm.com
// *!
// *!
// *!
// *!
// *! Additional Note(s):
// *!
// *!
//------------------------------------------------------------------------------
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include "proc_mpipl_ex_cleanup.H"
#include "p8_scom_addresses.H"
extern "C"
{
//------------------------------------------------------------------------------
// name: proc_mpipl_ex_cleanup
//------------------------------------------------------------------------------
// purpose:
// Undo step that prepared fast-winkled cores for scanning and set up deep winkle mode
// SCOM regs:
// 1) GP3 Register (NA in PERV CPLT)
//
// bit 27 (TP_LVLTRANS_FENCE): Electrical winkel fence. Mainly used by power management.
//
// 2) PowerManagement GP0 reg
//
// bit 22 (TP_TC_PERVASIVE_ECO_FENCE): Pervasive ECO fence
//
// bit 39 (PM_SLV_WINKLE_FENCE): Fence off the powered off chiplet in winkle. - Logical fence/hold for pcb_slave and pcb_slave_pm. For electrical fence see bit 23.
//
// 3) PowerManagement GP1
//
// Bit 5: WINKLE_POWER_OFF_SEL: Winkle Power Off Select:
// Selects which voltage level to place the Core and ECO domain PFETs upon Winkle entry. 0 = Vret (Fast Winkle Mode), 1 = Voff (Deep Winkle Mode). Depending on the setting of pmicr_latency_en, this bit is controlled with a PCB-write (0) or by the PMICR in the core (1).
//
// Bit 15: PMICR_LATENCY_EN: Selects how the sleep/winkle latency (which is deep/fast) is controlled. If asserted the PMICR controls the winkle/sleep_power_off_sel in PMGP1, otherwise those bits are controlled via SCOM by OCC.
// parameters:
// 'i_target' is chip target
//
// returns:
// FAPI_RC_SUCCESS (success, EX chiplets entered fast winkle)
//
// getscom/putscom/getattribute fapi errors
// fapi error assigned from eCMD function failure
//
//------------------------------------------------------------------------------
fapi::ReturnCode proc_mpipl_ex_cleanup(const fapi::Target & i_target) {
const char *procedureName = "proc_mpipl_ex_cleanup";
fapi::ReturnCode rc; //fapi return code
uint32_t rc_ecmd = 0; //ecmd return code value
ecmdDataBufferBase fsi_data(64); //64-bit data buffer
uint8_t attr_chip_unit_pos; //EX chiplet's unit offset within chip with respect to similar EX units
const uint64_t EX_OFFSET_MULT = 0x01000000; //Multiplier used to calculate offset for respective EX chiplet
uint64_t address; // Varible for computed addresses
uint64_t offset;
char reg_name[32]; // Character array for register names
// Relevant PMGP0 bits
// const uint32_t PM_DISABLE = 0;
const uint32_t BLOCK_REG_WKUP_SOURCE = 53;
// Relevant PMGP1 bits
const uint32_t WINKLE_POWER_OFF_SEL = 5;
std::vector<fapi::Target> v_ex_chiplets; //Vector of EX chiplets
do
{
//Entering fapi function
FAPI_INF("Entering %s", procedureName);
//Get vector of EX chiplets
rc = fapiGetChildChiplets( i_target,
fapi::TARGET_TYPE_EX_CHIPLET,
v_ex_chiplets,
fapi::TARGET_STATE_FUNCTIONAL);
if (rc)
{
FAPI_ERR("%s: fapiGetChildChiplets error", procedureName);
break;
}
FAPI_INF("Processing target %s", i_target.toEcmdString());
//Parse thru EX chiplets and prepare fast-winkled cores for deep operations
//Loop thru EX chiplets in vector
for (uint32_t counter = 0; counter < v_ex_chiplets.size(); counter++)
{
// Get EX chiplet number
rc = FAPI_ATTR_GET( ATTR_CHIP_UNIT_POS,
&(v_ex_chiplets[counter]),
attr_chip_unit_pos);
if (rc)
{
FAPI_ERR("%s: fapiGetAttribute error (ATTR_CHIP_UNIT_POS)", procedureName);
break;
}
FAPI_INF("EX chiplet pos = 0x%02X", attr_chip_unit_pos);
// Calculate the address offset based on chiplet number
offset = EX_OFFSET_MULT * attr_chip_unit_pos;
// -----------------------------------------------------------------
FAPI_DBG("\tOriginal register contents");
address = EX_GP3_0x100F0012 + offset;
strcpy(reg_name, "GP3");
rc = fapiGetScom( i_target, address, fsi_data );
if (rc)
{
FAPI_ERR("fapiGetScom error (addr: 0x%08llX)", address);
break;
}
FAPI_DBG("\t%s (addr: 0x%08llX), val=0x%016llX", reg_name, address, fsi_data.getDoubleWord(0));
address = EX_PMGP0_0x100F0100 + offset;
strcpy(reg_name, "PMGP0");
rc = fapiGetScom( i_target, address, fsi_data );
if (rc)
{
FAPI_ERR("fapiGetScom error (addr: 0x%08llX)", address);
break;
}
FAPI_DBG("\t%s (addr: 0x%08llX), val=0x%016llX", reg_name, address, fsi_data.getDoubleWord(0));
address = EX_PMGP1_0x100F0103 + offset;
strcpy(reg_name, "PMGP1");
rc = fapiGetScom( i_target, address, fsi_data );
if (rc)
{
FAPI_ERR("fapiGetScom error (addr: 0x%08llX)", address);
break;
}
FAPI_DBG("\t%s (addr: 0x%08llX), val=0x%016llX", reg_name, address, fsi_data.getDoubleWord(0));
// -----------------------------------------------------------------
// Clean up configuration remnants of the fast-winkle configuration
// that was used to flush the chiplets after checkstop. EX chiplets
// will have been through SBE EX Init with certain step skippled due
// to MPIPL.
FAPI_INF("Re-establish Deep Winkle mode default");
address = EX_PMGP1_OR_0x100F0105 + offset;
strcpy(reg_name, "PMGP1 OR");
rc_ecmd |= fsi_data.flushTo0();
rc_ecmd |= fsi_data.setBit(WINKLE_POWER_OFF_SEL);
if(rc_ecmd)
{
FAPI_ERR("ecmdDatatBuffer error preparing %s reg (addr: 0x%08llX) with rc %x", reg_name, address, rc_ecmd);
rc.setEcmdError(rc_ecmd);
break;
}
rc = fapiPutScom(i_target, address, fsi_data);
if (rc)
{
FAPI_ERR("fapiPutScom error (addr: 0x%08llX)", address);
break;
}
FAPI_INF("Clear block wakeup sources to PM logic. PM is NOT re-enabled");
// (eg clear Block Interrrupt Sources)
address = EX_PMGP0_AND_0x100F0101 + offset;
strcpy(reg_name, "PMGP0 AND");
rc_ecmd |= fsi_data.flushTo1();
// rc_ecmd |= fsi_data.clearBit(PM_DISABLE);
rc_ecmd |= fsi_data.clearBit(BLOCK_REG_WKUP_SOURCE);
if(rc_ecmd)
{
FAPI_ERR("ecmdDatatBuffer error preparing %s reg (addr: 0x%08llX)", reg_name, address);
rc.setEcmdError(rc_ecmd);
break;
}
rc = fapiPutScom(i_target, address, fsi_data);
if (rc)
{
FAPI_ERR("fapiPutScom error (addr: 0x%08llX)", address);
break;
}
// -----------------------------------------------------------------
FAPI_DBG("\tUpdated register contents");
address = EX_GP3_0x100F0012 + offset;
strcpy(reg_name, "GP3");
rc = fapiGetScom( i_target, address, fsi_data );
if (rc)
{
FAPI_ERR("fapiGetScom error (addr: 0x%08llX)", address);
break;
}
FAPI_DBG("\t%s (addr: 0x%08llX), val=0x%016llX", reg_name, address, fsi_data.getDoubleWord(0));
address = EX_PMGP0_0x100F0100 + offset;
strcpy(reg_name, "PMGP0");
rc = fapiGetScom( i_target, address, fsi_data );
if (rc)
{
FAPI_ERR("fapiGetScom error (addr: 0x%08llX)", address);
break;
}
FAPI_DBG("\t%s (addr: 0x%08llX), val=0x%016llX", reg_name, address, fsi_data.getDoubleWord(0));
address = EX_PMGP1_0x100F0103 + offset;
strcpy(reg_name, "PMGP1");
rc = fapiGetScom( i_target, address, fsi_data );
if (rc)
{
FAPI_ERR("fapiGetScom error (addr: 0x%08llX)", address);
break;
}
FAPI_DBG("\t%s (addr: 0x%08llX), val=0x%016llX", reg_name, address, fsi_data.getDoubleWord(0));
// -----------------------------------------------------------------
} // chiplet loop
// Error exit from above loop
// Not really needed as outer while(0) is next but here for consistent structure
if (!rc.ok())
{
break;
}
} while (0);
//Exiting fapi function
FAPI_INF("Exiting %s", procedureName);
return rc;
}
} // extern "C"
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