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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/sbeio/sbe_secureHwp.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2012,2017 */
/* [+] 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 sbe_secureHwp.C
* @brief Send request to perform a HWP securely on SBE
*/
#include <config.h>
#include <trace/interface.H>
#include <errl/errlmanager.H>
#include <sbeio/sbeioif.H>
#include <sbeio/sbe_utils.H>
#include "sbe_fifodd.H"
#include <sbeio/sbeioreasoncodes.H>
#include <targeting/common/targetservice.H>
extern trace_desc_t* g_trac_sbeio;
#define SBE_TRACD(printf_string,args...) \
TRACDCOMP(g_trac_sbeio,"secureHwp: " printf_string,##args)
#define SBE_TRACF(printf_string,args...) \
TRACFCOMP(g_trac_sbeio,"secureHwp: " printf_string,##args)
namespace SBEIO
{
//List out name of valid hwps that have chipop equivalents
//these static variable will be used by
static const char* test_hwp = "p9_pm_ocb_indir_access"; // SBE_FIFO_CMD_PLACEHOLDER_HWP
/**
* @brief Convert a hwp name passed in as a string to a chipOp code
* @param[in] i_hwpName name of hwp as a string
* @return fifoSecureHwpMessage returns a chipOp representing the HWP, if found
* otherwise returns UNSUPPORTED_HWP enum
*/
SbeFifo::fifoSecureHwpMessage convertHwpStringToOpCode(char* i_hwpName)
{
//Default to undefined HWP
SbeFifo::fifoSecureHwpMessage l_hwpOpCode = SbeFifo::fifoSecureHwpMessage::SBE_FIFO_CMD_UNSUPPORTED_HWP;
//If we find a match, set the return value
if(strcmp(i_hwpName,test_hwp) == 0)
{
l_hwpOpCode = SbeFifo::fifoSecureHwpMessage::SBE_FIFO_CMD_PLACEHOLDER_HWP;
}
return l_hwpOpCode;
}
/**
* @brief Request the SBE to do a specific chip op
*
* @param[in] i_target The target of which the HWP is intended to be called on,
* this must be the first param of the request HWP
*
* @param[in] i_dataPointer Pointer to a blob of data that contains additional parameters
* for the requests HWP
*
* @param[in] i_dataSize Size of blob of data that contains additional parameters
* for the requests HWP
*
* @param[in] i_hwpStringLen size of the hwp name string at beginning of data pointer
*
* @return errlHndl_t Error log handle on failure.
*
*/
errlHndl_t sendSecureHwpRequest(TARGETING::Target * i_target,
uint8_t * i_dataPointer,
uint64_t i_dataSize,
uint64_t i_hwpStringLen)
{
errlHndl_t errl = nullptr;
do
{
SBE_TRACD(ENTER_MRK "sendSecureHwpRequest");
auto l_targType = i_target->getAttr<TARGETING::ATTR_TYPE>();
TARGETING::Target * l_proc;
//Copy out the hwp name string into a local buffer
char l_hwpName[i_hwpStringLen];
memcpy(l_hwpName, i_dataPointer, i_hwpStringLen);
if(l_targType == TARGETING::TYPE_PROC)
{
l_proc = i_target;
}
else
{
l_proc = const_cast<TARGETING::Target *>(getParentChip(i_target));
}
SbeFifo::fifoSecureHwpRequest l_fifoRequest(i_dataSize, i_hwpStringLen, i_dataPointer);
SbeFifo::fifoStandardResponse l_fifoResponse;
//Command is computed by converting hwp string to function
l_fifoRequest.command = convertHwpStringToOpCode(l_hwpName);
l_fifoRequest.targetType = translateToSBETargetType(i_target);
l_fifoRequest.chipletId = getChipletIDForSBE(i_target);
SBE_TRACD(ENTER_MRK "requesting secureHwp %d on proc %d HB -> SBE ",
l_fifoRequest.command,
l_proc->getAttr<TARGETING::ATTR_POSITION>());
errl = SbeFifo::getTheInstance().performFifoChipOp(l_proc,
(uint32_t *)&l_fifoRequest,
(uint32_t *)&l_fifoResponse,
sizeof(SbeFifo::fifoStandardResponse));
SBE_TRACD(EXIT_MRK "sendSecureHwpRequest");
}while(0);
return errl;
};
} //end namespace SBEIO
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