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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/usr/secureboot/smf.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 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 */
#ifndef __SMF_H
#define __SMF_H
#include <errl/errlentry.H>
#include <stdint.h>
#include <limits.h>
// The maximum size of the unsecure HOMER region in reserved memory
#define MAX_UNSECURE_HOMER_SIZE (1 * PAGESIZE)
// The size of the Ultravisor white/blacklist
#define UVBWLIST_SIZE (32 * KILOBYTE)
namespace SMF_TRACE
{
extern trace_desc_t* g_trac_smf;
}
namespace SECUREBOOT
{
namespace SMF
{
/**
* @brief A function that distributes the requested amount of secure
* memory between the functional procs with memory on the system.
* The memory is distributed in power-of-two chunks of 256MB
* until either all memory is distributed or there are no procs
* remaining with memory available. If the requested amount is not
* a power-of-two factor of 256MB, the amount of memory will be rounded
* up accordingly. The function returns predictive or informational
* errors in the following cases: there is no available memory behind the
* procs on the system (predictive error), the exact amount of secure mem
* allocated did not match the requested amount (informational error). If
* 0 is passed in to the function, no attempt at distribution occurs and
* the SMF mode is turned off.
*
* @param[in] i_requestedSmfMemAmtInBytes the amount of secure memory to be
* distributed (in bytes) among the procs on the system
*
* @return nullptr: the memory was successfully distributed as requested
* non-nullptr: a distribution error occurred (the error type will
* never be unrecoverable)
*/
errlHndl_t distributeSmfMem(const uint64_t i_requestedSmfMemAmtInBytes);
/**
* @brief Function to distribute the requested amount of SMF memory between
* passed in procs with available memory. If 0 is passed in to the
* function, no attempt at distribution occurs and the SMF mode is turned
* off. Amount that are not power-of-two factors of 256MB are rounded up
* accordingly.
*
* @param[in] i_requestedSmfMemAmtInBytes the requested amount of secure memory
* to distribute between the procs (in bytes)
*
* @param[in] i_procToMemVec the vector of available procs on the system and
* the amount of memory attached to each
*
* @return nullptr: distribution was successful
* non-nullptr: an error occurred during distribution (the error type
* will never be unrecoverable)
*/
errlHndl_t distributeSmfMem(const uint64_t i_requestedSmfMemAmtInBytes,
std::vector<struct ProcToMemAssoc>& i_procToMemVec);
/**
* @brief Helper function to return the total amount of memory available behind
* the given proc
*
* @param[in] i_proc the proc target to calculate the total memory for
*
* @pre the target must not be nullptr or the funtion will assert
*
* @return the total amount of memory, in bytes, available behind the input proc
*/
uint64_t getTotalProcMemSize(const TARGETING::Target* const i_proc);
} // namespace SMF
} // namespace SECUREBOOT
#endif
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