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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/usr/util/utilsemipersist.H $ */
/* */
/* 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 */
#ifndef UTILSEMIPERSIST_H
#define UTILSEMIPERSIST_H
/**
* @file utilsemipersist.H
*
* @brief Utilies to access the semi persistent memory
*
*
*/
/*****************************************************************************/
// I n c l u d e s
/*****************************************************************************/
// Utility Includes
/*****************************************************************************/
// Forwards
/*****************************************************************************/
//*****************************************************************************/
// C o n s t a n t s
/*****************************************************************************/
namespace Util
{
enum
{
PERSIST_MAGIC = 0x48425f56, // HB_V
};
struct semiPersistData_t
{
uint32_t magic; //HB_V
uint32_t reboot_cnt; // Number of reboots with valid data
semiPersistData_t(): magic(0), reboot_cnt(0) {};
} PACKED;
/**
* @brief This function writes data structure to the HB semi persistent
* region. Data is flushed to storage once this call returns
* @param[in] i_data Structure to write
*
* @return none
*/
void writeSemiPersistData(const semiPersistData_t i_data);
/**
* @brief This function reads data structure from the HB semi persistent
* region. If the region cannot be found it will return 0s for all data.
* User must check magic header to know if data is valid
* @param[in] o_data Structure to read
*
* @return none
*/
void readSemiPersistData(semiPersistData_t & o_data);
};
#endif //UTILMEM_H
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