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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/sbefw/core/sbeutil.C $ */
/* */
/* OpenPOWER sbe Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2016,2018 */
/* [+] 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 */
#include "sbeutil.H"
#include "fapi2.H"
#include "sbetrace.H"
#include "sbeglobals.H"
#include "plat_hw_access.H"
#include "assert.h"
// Nest frequency array
#include "p9_frequency_buckets.H"
#define SBE_PERV_SB_CS_SCOM 0x00050008
#define SBCS_VEC_1_CLEAR(sbcsreg) (sbcsreg & ~0x0004000000000000ull)
#define SBCS_VEC_1_GET(sbcsreg) (sbcsreg & 0x0004000000000000ull)
namespace SBE
{
bool isSimics() __attribute__((alias("__isSimicsRunning")));
extern "C" void __isSimicsRunning() __attribute__ ((noinline));
void __isSimicsRunning()
{
asm volatile("li 3, 0");
SBE_MAGIC_INSTRUCTION(MAGIC_SIMICS_CHECK);
}
bool isSimicsRunning()
{
static bool simics = isSimics();
return simics;
}
void updatePkFreq()
{
#define SBE_FUNC "updatePkFreq "
using namespace fapi2;
Target<TARGET_TYPE_SYSTEM> sys;
uint8_t nestPllBkt = 0;
FAPI_ATTR_GET( ATTR_NEST_PLL_BUCKET, sys, nestPllBkt );
assert( nestPllBkt && (nestPllBkt <= NEST_PLL_FREQ_BUCKETS ));
SBE_GLOBAL->sbefreq = ( NEST_PLL_FREQ_LIST[ nestPllBkt - 1 ] * 1000 * 1000 )/
SBE::SBE_TO_NEST_FREQ_FACTOR;
SBE_INFO(SBE_FUNC"Setting new frequency:0x%08X", SBE_GLOBAL->sbefreq);
pk_timebase_freq_set(SBE_GLOBAL->sbefreq);
#undef SBE_FUNC
}
bool isHreset(void)
{
#define SBE_FUNC "IS_HRESET"
using namespace fapi2;
bool isHreset = false;
uint64_t sbcsreg = 0;
ReturnCode rc = FAPI2_RC_SUCCESS;
plat_target_handle_t tgtHndl;
rc = getscom_abs_wrap (&tgtHndl,
SBE_PERV_SB_CS_SCOM,
&sbcsreg);
if (rc != FAPI2_RC_SUCCESS)
{
SBE_ERROR(SBE_FUNC" could not read sbcs register, halting.");
pk_halt();
}
isHreset = SBCS_VEC_1_GET(sbcsreg);
SBE_INFO(SBE_FUNC" [%d]", isHreset);
return (isHreset);
#undef SBE_FUNC
}
void clearHresetBit(void)
{
#define SBE_FUNC "CLEAR_HRESET_BIT"
using namespace fapi2;
// clear the hreset bit
uint64_t sbcsreg = 0;
plat_target_handle_t tgtHndl;
ReturnCode rc = getscom_abs_wrap (&tgtHndl,
SBE_PERV_SB_CS_SCOM,
&sbcsreg);
if (rc != FAPI2_RC_SUCCESS)
{
SBE_ERROR(SBE_FUNC" could not read sbcs register, halting.");
pk_halt();
}
sbcsreg = SBCS_VEC_1_CLEAR(sbcsreg);
rc = putscom_abs_wrap (&tgtHndl,
SBE_PERV_SB_CS_SCOM,
sbcsreg);
if (rc != FAPI2_RC_SUCCESS)
{
SBE_ERROR(SBE_FUNC" could not write sbcs register, halting.");
pk_halt();
}
#undef SBE_FUNC
}
}
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