diff options
Diffstat (limited to 'src/usr/targeting/common/util.C')
| -rw-r--r-- | src/usr/targeting/common/util.C | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/usr/targeting/common/util.C b/src/usr/targeting/common/util.C index 9bf93b64c..bb3eca946 100644 --- a/src/usr/targeting/common/util.C +++ b/src/usr/targeting/common/util.C @@ -30,6 +30,7 @@ //****************************************************************************** // Includes //****************************************************************************** +#include <stdint.h> #include <targeting/common/attributes.H> #include <targeting/common/targetservice.H> #include <targeting/common/utilFilter.H> @@ -245,6 +246,52 @@ uint64_t get_top_mem_addr(void) return top_addr; } +/** + * @brief Utility function to obtain the lowest known address in the system + */ +uint64_t get_bottom_mem_addr(void) +{ + uint64_t bottom_addr = UINT64_MAX; + + do + { + // Get all functional proc chip targets + TARGETING::TargetHandleList l_cpuTargetList; + TARGETING::getAllChips(l_cpuTargetList, TYPE_PROC); + + for ( size_t proc = 0; proc < l_cpuTargetList.size(); proc++ ) + { + TARGETING::Target * l_pProc = l_cpuTargetList[proc]; + + uint64_t l_mem_bases[8] = {}; + uint64_t l_mem_sizes[8] = {}; + TARG_ASSERT( + l_pProc->tryGetAttr<TARGETING::ATTR_PROC_MEM_BASES>(l_mem_bases), + "Unable to get ATTR_PROC_MEM_BASES attribute"); + + TARG_ASSERT( + l_pProc->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 + { + bottom_addr = std::min(bottom_addr, l_mem_bases[i]); + } + } + } + }while(0); + + // There's no reason the lowest address should be the largest + // 64 bit value + TARG_ASSERT( + bottom_addr < UINT64_MAX, + "Lowest address is maximum 64-bit value"); + + return bottom_addr; +} + bool orderByNodeAndPosition( Target* i_firstProc, Target* i_secondProc) |
