diff options
Diffstat (limited to 'src/usr/targeting/targetservicestart.C')
| -rwxr-xr-x | src/usr/targeting/targetservicestart.C | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/src/usr/targeting/targetservicestart.C b/src/usr/targeting/targetservicestart.C index 969a2a7ab..1faae4cee 100755 --- a/src/usr/targeting/targetservicestart.C +++ b/src/usr/targeting/targetservicestart.C @@ -58,6 +58,10 @@ #include <config.h> #include <initservice/initserviceif.H> #include <util/misc.H> +#include <kernel/bltohbdatamgr.H> +#include <map> +#include <arch/memorymap.H> +#include <lpc/lpcif.H> #ifdef CONFIG_DRTM #include <secureboot/drtm.H> @@ -95,6 +99,12 @@ static void initializeAttributes(TargetService& i_targetService, static void checkProcessorTargeting(TargetService& i_targetService); /** + * @brief Compute any values that might change based on a remap of memory + * @param[in] Pointer to targeting service + */ +static void adjustMemoryMap(TargetService& i_targetService); + +/** * @brief Entry point for initialization service to initialize the targeting * code * @@ -381,6 +391,9 @@ static void initializeAttributes(TargetService& i_targetService, else { l_pTopLevel->setAttr<ATTR_IS_MPIPL_HB>(0); + + // Compute any values that might change based on a remap of memory + adjustMemoryMap(i_targetService); } } else // top level is NULL - never expected @@ -392,6 +405,135 @@ static void initializeAttributes(TargetService& i_targetService, #undef TARG_FN } +/** + * @brief Utility macro to swap attributes + * @param[in] _attr Attribute ID + * @param[in] _master Master proc target + * @param[in] _victim Victim proc target + * @param[in] _cache Cache of victime attributes + */ +#define SWAP_ATTRIBUTE( _attr, _master, _victim, _cache ) \ +{ \ + _attr##_type l_masterVal = _master->getAttr<_attr>(); \ + _victim->setAttr<_attr>(l_masterVal); \ + TARG_INF( "%.8X>" #_attr "=%.16llX", get_huid(_victim), l_masterVal ); \ + _master->setAttr<_attr>(_cache[_attr]); \ + TARG_INF( "%.8X>" #_attr "=%.16llX", get_huid(_master), _cache[_attr] ); \ +} + +// Compute any values that might change based on a remap of memory +static void adjustMemoryMap( TargetService& i_targetService ) +{ + // Grab the value of the BARs that SBE booted with + uint64_t l_curXscomBAR = g_BlToHbDataManager.getXscomBAR(); + uint64_t l_curLpcBAR = g_BlToHbDataManager.getLpcBAR(); + TARG_INF( "adjustMemoryMap> xscom=%X, lpc=%X", l_curXscomBAR, l_curLpcBAR ); + + // Get the master proc + Target* l_pMasterProcChip = nullptr; + i_targetService.masterProcChipTargetHandle(l_pMasterProcChip); + assert(l_pMasterProcChip,"No Master Proc"); + + // Save off the base (group0-chip0) value for the BARs + Target* l_pTopLevel = nullptr; + i_targetService.getTopLevelTarget(l_pTopLevel); + ATTR_XSCOM_BASE_ADDRESS_type l_xscomBase = + l_pTopLevel->getAttr<ATTR_XSCOM_BASE_ADDRESS>(); + ATTR_LPC_BUS_ADDR_type l_lpcBase = + l_pTopLevel->getAttr<ATTR_LPC_BUS_ADDR>(); + + // Loop through all the procs to recompute all the BARs + // also find the victim to swap with + Target* l_swapVictim = nullptr; + std::map<ATTRIBUTE_ID,uint64_t> l_swapAttrs; + + TARGETING::TargetHandleList l_funcProcs; + getAllChips(l_funcProcs, TYPE_PROC, false ); + for( auto & l_procChip : l_funcProcs ) + { + TARG_INF( "Proc=%.8X", get_huid(l_procChip) ); + // Set effective fabric ids back to default values + ATTR_FABRIC_GROUP_ID_type l_groupId = + l_procChip->getAttr<ATTR_FABRIC_GROUP_ID>(); + l_procChip->setAttr<ATTR_PROC_EFF_FABRIC_GROUP_ID>(l_groupId); + + ATTR_FABRIC_CHIP_ID_type l_chipId = + l_procChip->getAttr<ATTR_FABRIC_CHIP_ID>(); + l_procChip->setAttr<ATTR_PROC_EFF_FABRIC_CHIP_ID>(l_chipId); + + // Compute default xscom BAR + ATTR_XSCOM_BASE_ADDRESS_type l_xscomBAR = + computeMemoryMapOffset( l_xscomBase, l_groupId, l_chipId ); + TARG_INF( " XSCOM=%.16llX", l_xscomBAR ); + l_procChip->setAttr<ATTR_XSCOM_BASE_ADDRESS>(l_xscomBAR); + + // See if this chip's space now belongs to the master + if( l_xscomBAR == l_curXscomBAR ) + { + l_swapVictim = l_procChip; + TARG_INF( "Master Proc %.8X is using XSCOM BAR from %.8X, BAR=%.16llX", get_huid(l_pMasterProcChip), get_huid(l_swapVictim), l_curXscomBAR ); + l_swapAttrs[ATTR_PROC_EFF_FABRIC_GROUP_ID] = l_groupId; + l_swapAttrs[ATTR_PROC_EFF_FABRIC_CHIP_ID] = l_chipId; + l_swapAttrs[ATTR_XSCOM_BASE_ADDRESS] = l_xscomBAR; + } + + // Compute default LPC BAR + ATTR_LPC_BUS_ADDR_type l_lpcBAR = + computeMemoryMapOffset( l_lpcBase, l_groupId, l_chipId ); + TARG_INF( " LPC=%.16llX", l_lpcBAR ); + l_procChip->setAttr<ATTR_LPC_BUS_ADDR>(l_lpcBAR); + if( l_swapVictim == l_procChip ) + { + l_swapAttrs[ATTR_LPC_BUS_ADDR] = l_lpcBAR; + } + + // Paranoid double-check that LPC matches XSCOM... + if( ((l_lpcBAR == l_curLpcBAR) && (l_swapVictim != l_procChip)) + || + ((l_lpcBAR != l_curLpcBAR) && (l_swapVictim == l_procChip)) ) + { + TARG_ERR("BARs do not match : LPC=%.16llX, XSCOM=%.16llX", + l_curLpcBAR, l_curXscomBAR ); + TARG_ASSERT(false,"Mismatch between LPC and XSCOM BARs"); + } + + // Set the rest of the BARs... + } + + // We must have found a match somewhere + TARG_ASSERT( l_swapVictim != nullptr, "No swap match found" ); + + // Now swap the BARs between the master and the victim if needed + if( l_swapVictim != l_pMasterProcChip ) + { + // Walk through all of the attributes we cached above + SWAP_ATTRIBUTE( ATTR_PROC_EFF_FABRIC_GROUP_ID, l_pMasterProcChip, + l_swapVictim, l_swapAttrs ); + SWAP_ATTRIBUTE( ATTR_PROC_EFF_FABRIC_CHIP_ID, l_pMasterProcChip, + l_swapVictim, l_swapAttrs ); + SWAP_ATTRIBUTE( ATTR_XSCOM_BASE_ADDRESS, l_pMasterProcChip, + l_swapVictim, l_swapAttrs ); + SWAP_ATTRIBUTE( ATTR_LPC_BUS_ADDR, l_pMasterProcChip, + l_swapVictim, l_swapAttrs ); + // Handle the rest of the BARs... + } + + + // Cross-check that what we ended up setting in the attributes + // matches the non-TARGETING values that the XSCOM and LPC + // drivers computed + if( l_pMasterProcChip->getAttr<ATTR_LPC_BUS_ADDR>() + != LPC::get_lpc_bar() ) + { + TARG_ERR( "LPC attribute=%.16llX, live=%.16llX", + l_pMasterProcChip->getAttr<ATTR_LPC_BUS_ADDR>(), + LPC::get_lpc_bar() ); + TARG_ASSERT( true, "LPC BARs are inconsistent" ); + } + //@todo-RTC:173519-Add xscom cross-check +} + + #undef TARG_CLASS #undef TARG_NAMESPACE |
