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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/usr/isteps/mem_utils.C $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2018,2019 */
/* [+] 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 <isteps/mem_utils.H>
#include <targeting/common/target.H>
#include <targeting/common/utilFilter.H>
#include <errl/hberrltypes.H>
#include <secureboot/smf_utils.H>
#include <stdint.h>
#include <isteps/nvdimm/nvdimmif.H>
namespace ISTEP
{
/**
* @brief Utility function to obtain the highest known address in the system
*/
uint64_t get_top_mem_addr()
{
uint64_t l_top_addr = 0;
do
{
// Get all functional proc chip targets
TARGETING::TargetHandleList l_cpuTargetList;
TARGETING::getAllChips(l_cpuTargetList, TARGETING::TYPE_PROC);
assert(l_cpuTargetList.size() != 0, "Empty proc list returned!");
for (auto l_pProc : l_cpuTargetList)
{
l_top_addr = std::max(l_top_addr, get_top_mem_addr(l_pProc));
}
} while(0);
return l_top_addr;
}
/**
* @brief Utility function to obtain the highest known address in a given proc
*/
uint64_t get_top_mem_addr(const TARGETING::Target* i_proc)
{
uint64_t l_top_addr = 0;
assert(i_proc, "nullptr passed to get_top_mem_addr");
assert(i_proc->getAttr<TARGETING::ATTR_TYPE>() == TARGETING::TYPE_PROC,
"Invalid target passed to get_top_mem_addr (need TYPE_PROC)");
//Not checking success here as fail results in no change to
// top_addr
uint64_t l_mem_bases[8] = {0,};
uint64_t l_mem_sizes[8] = {0,};
i_proc->tryGetAttr<TARGETING::ATTR_PROC_MEM_BASES>(l_mem_bases);
i_proc->tryGetAttr<TARGETING::ATTR_PROC_MEM_SIZES>(l_mem_sizes);
for (size_t i=0; i< 8; i++)
{
if(l_mem_sizes[i]) //non zero means that there is memory present
{
l_top_addr = std::max(l_top_addr,
l_mem_bases[i] + l_mem_sizes[i]);
}
}
return l_top_addr;
}
/**
* @brief Utility function to obtain the lowest known address in the system
*/
uint64_t get_bottom_mem_addr()
{
uint64_t l_bottom_addr = UINT64_MAX;
do
{
// Get all functional proc chip targets
TARGETING::TargetHandleList l_cpuTargetList;
TARGETING::getAllChips(l_cpuTargetList, TARGETING::TYPE_PROC);
for (const auto l_pProc : l_cpuTargetList)
{
l_bottom_addr =std::min(l_bottom_addr,get_bottom_mem_addr(l_pProc));
}
}while(0);
// There's no reason the lowest address should be the largest
// 64 bit value
assert(l_bottom_addr < UINT64_MAX,
"Lowest address is maximum 64-bit value, probably have no memory");
return l_bottom_addr;
}
/**
* @brief Utility function to obtain the lowest known address in a given proc
*/
uint64_t get_bottom_mem_addr(const TARGETING::Target* i_proc)
{
uint64_t l_bottom_addr = UINT64_MAX;
assert(i_proc, "nullptr passed to get_bottom_mem_addr");
assert(i_proc->getAttr<TARGETING::ATTR_TYPE>() == TARGETING::TYPE_PROC,
"Invalid target passed to get_bottom_mem_addr (need TYPE_PROC)");
uint64_t l_mem_bases[8] = {};
uint64_t l_mem_sizes[8] = {};
assert(i_proc->tryGetAttr<TARGETING::ATTR_PROC_MEM_BASES>(l_mem_bases),
"Unable to get ATTR_PROC_MEM_BASES attribute");
assert(i_proc->tryGetAttr<TARGETING::ATTR_PROC_MEM_SIZES>(l_mem_sizes),
"Unable to get ATTR_PROC_MEM_SIZES attribute");
for (size_t i=0; i< 8; i++)
{
if(l_mem_sizes[i]) //non zero means that there is memory present
{
l_bottom_addr = std::min(l_bottom_addr, l_mem_bases[i]);
}
}
return l_bottom_addr;
}
/**
* @brief Utility function to obtain the highest known SMF base address on
* the system
*/
uint64_t get_top_smf_mem_addr()
{
uint64_t l_top_addr = 0;
// Get all functional proc chip targets
TARGETING::TargetHandleList l_cpuTargetList;
TARGETING::getAllChips(l_cpuTargetList, TARGETING::TYPE_PROC);
assert(l_cpuTargetList.size() != 0, "Empty proc list returned!");
for (const auto l_pProc : l_cpuTargetList)
{
l_top_addr = std::max(l_top_addr, get_top_smf_mem_addr(l_pProc));
}
return l_top_addr;
}
/**
* @brief Utility function to obtain the highest SMF base address on the
* given proc
*/
uint64_t get_top_smf_mem_addr(const TARGETING::Target* i_proc)
{
uint64_t l_top_addr = 0;
assert(i_proc, "nullptr passed to get_top_smf_mem_addr");
assert(i_proc->getAttr<TARGETING::ATTR_TYPE>() == TARGETING::TYPE_PROC,
"Invalid target passed to get_top_smf_mem_addr (need TYPE_PROC)");
auto l_smf_bar =
i_proc->getAttr<TARGETING::ATTR_PROC_SMF_BAR_BASE_ADDR>();
auto l_smf_size =
i_proc->getAttr<TARGETING::ATTR_PROC_SMF_BAR_SIZE>();
l_top_addr = l_smf_bar + l_smf_size;
return l_top_addr;
}
/**
* @brief Utility function to fetch the top of the HOMER memory;
* when SMF is enabled, the function will return the highest
* available SMF BAR on a proc, so the top of the HOMER memory
* will be pointed to the top of SMF memory, and all of the
* contents will be put in secure memory space. When SMF is not
* enabled, the function will return the highest known address
* on the system.
*/
uint64_t get_top_homer_mem_addr()
{
uint64_t l_top_homer_addr = 0;
do
{
if(SECUREBOOT::SMF::isSmfEnabled())
{
l_top_homer_addr = get_top_smf_mem_addr();
}
else
{
l_top_homer_addr = get_top_mem_addr();
}
// Need to make sure we don't choose a range that is owned by
// the NVDIMMs
l_top_homer_addr =
NVDIMM::get_top_addr_with_no_nvdimms(l_top_homer_addr);
}while(0);
return l_top_homer_addr;
}
} // namespace ISTEP
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