diff options
Diffstat (limited to 'src/import/chips/p9/procedures/hwp/memory/p9_mss_freq.C')
| -rw-r--r-- | src/import/chips/p9/procedures/hwp/memory/p9_mss_freq.C | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/src/import/chips/p9/procedures/hwp/memory/p9_mss_freq.C b/src/import/chips/p9/procedures/hwp/memory/p9_mss_freq.C index 3b0fc2eb2..292e0b0e1 100644 --- a/src/import/chips/p9/procedures/hwp/memory/p9_mss_freq.C +++ b/src/import/chips/p9/procedures/hwp/memory/p9_mss_freq.C @@ -81,8 +81,12 @@ extern "C" "Failed check for freq_override()"); #endif - // Default values for initialization as well as empty dimm list case - uint64_t l_min_dimm_freq = 0; + // We set this to a non-0 so we avoid divide-by-zero errors in the conversions which + // go from clocks to time (and vice versa.) We have other bugs if there was really + // no mt/s determined and there really is a DIMM installed, so this is ok. + // We pick the maximum frequency supported by the system as the default. + // TK remove this when we can ask the MRW for the fastest the system supports + uint64_t l_min_dimm_freq = fapi2::ENUM_ATTR_MSS_FREQ_MT2666; uint64_t l_desired_cas_latency = 0; if(l_cas_latency.iv_dimm_list_empty) @@ -109,14 +113,15 @@ extern "C" FAPI_INF("Selected DIMM speed from supported speeds: %d", l_min_dimm_freq); - // Set attributes - FAPI_TRY(mss::set_freq_attrs(i_target, l_min_dimm_freq), - "Failed set_freq_attrs()"); - - FAPI_TRY(mss::set_CL_attr(i_target, l_desired_cas_latency ), - "Failed set_CL_attr()"); }// end else + // Set attributes + FAPI_TRY(mss::set_freq_attrs(i_target, l_min_dimm_freq), + "Failed set_freq_attrs()"); + + FAPI_TRY(mss::set_CL_attr(i_target, l_desired_cas_latency ), + "Failed set_CL_attr()"); + FAPI_INF( "Final Chosen Frequency: %d", l_min_dimm_freq); FAPI_INF( "Final Chosen CL: %d", l_desired_cas_latency); |
