diff options
Diffstat (limited to 'src/usr/runtime')
| -rw-r--r-- | src/usr/runtime/populate_hbruntime.C | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/src/usr/runtime/populate_hbruntime.C b/src/usr/runtime/populate_hbruntime.C index 5450319e9..7f47c4138 100644 --- a/src/usr/runtime/populate_hbruntime.C +++ b/src/usr/runtime/populate_hbruntime.C @@ -1160,10 +1160,46 @@ errlHndl_t populate_HbRsvMem(uint64_t i_nodeId, bool i_master_node) { break; } - } else if(TARGETING::is_sapphire_load()) { + // Reserve the HRMOR space if it not at zero offset. + //////////////////////////////////////////////////////////////////// + // HRMOR Calculation on OPAL Vs PhyP systems + // For PhyP system, HRMOR is set to 128MB, which is calculated basis + // this theory ==>> + // "supported offset values are all values of the + // form i x 2 exp `r`, where 0 <= i <= 2 exp `j`, and j and r are + // implementation-dependent values having the properties that + // 12 <= r <= 26". (Texted quoted from PowerISA Doc) + // Basis the above, value of r is 26, which sets the offset + // granularity to 64MB, therefore value of i is '2', which makes the + // offset to 128MB. + // Basis the above calculation/assumption, calculation of HRMO in + // OPAL system is as follows - + // OPAL needs the HRMOR in the range of 4GB, so that HB reloading + // doesn't stamp on the OPAL/HostLinux Data. Now keeping the max + // granularity as 64MB, 'i' is the multiplication factor which comes + // to around 64 (64MB * 64 = 4096MB) + //////////////////////////////////////////////////////////////////// + uint64_t l_hbAddr = cpu_spr_value(CPU_SPR_HRMOR) - VMM_HRMOR_OFFSET; + // if l_hbAddr is zero that means PhyP system where HRMOR is set to + // 128MB, if this is not zero that means OPAL system where HRMOR is + // set to 3968MB + if(l_hbAddr) + { + l_elog = setNextHbRsvMemEntry(HDAT::RHB_TYPE_PRIMARY, + i_nodeId, + l_hbAddr, + VMM_HB_RSV_MEM_SIZE, + HBRT_RSVD_MEM__PRIMARY, + HDAT::RHB_READ_WRITE, + false); + if(l_elog != nullptr) + { + break; + } + } // Opal data goes at top_of_mem l_topMemAddr = TARGETING::get_top_mem_addr(); assert (l_topMemAddr != 0, |
