diff options
| -rw-r--r-- | external/mambo/skiboot.tcl | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/external/mambo/skiboot.tcl b/external/mambo/skiboot.tcl index 38298bf..6c40289 100644 --- a/external/mambo/skiboot.tcl +++ b/external/mambo/skiboot.tcl @@ -61,6 +61,9 @@ mconfig net MAMBO_NET none # Net: What is the base interface for the tun/tap device mconfig tap_base MAMBO_NET_TAP_BASE 0 +# Enable (default) or disable the "speculation-policy-favor-security" setting, +# set to 0 to disable. When enabled it causes Linux's RFI flush to be enabled. +mconfig speculation_policy_favor_security MAMBO_SPECULATION_POLICY_FAVOR_SECURITY 1 # # Create machine config @@ -251,13 +254,31 @@ set reg [list $fake_nvram_start $fake_nvram_size ] mysim of addprop $fake_nvram_node array64 "reg" reg mysim of addprop $fake_nvram_node empty "name" "ibm,fake-nvram" +set opal_node [mysim of addchild $root_node "ibm,opal" ""] + # Allow P9 to use all idle states if { $default_config == "P9" } { - set opal_node [mysim of addchild $root_node "ibm,opal" ""] set power_mgt_node [mysim of addchild $opal_node "power-mgt" ""] mysim of addprop $power_mgt_node int "ibm,enabled-stop-levels" 0xffffffff } +proc add_feature_node { parent name { value 1 } } { + if { $value != 1 } { + set value "disabled" + } else { + set value "enabled" + } + set np [mysim of addchild $parent $name ""] + mysim of addprop $np empty $value "" +} + +set np [mysim of addchild $opal_node "fw-features" ""] +add_feature_node $np "speculation-policy-favor-security" $mconf(speculation_policy_favor_security) +add_feature_node $np "needs-l1d-flush-msr-hv-1-to-0" +add_feature_node $np "needs-l1d-flush-msr-pr-0-to-1" +add_feature_node $np "needs-spec-barrier-for-bound-checks" + + # Init CPUs set pir 0 for { set c 0 } { $c < $mconf(cpus) } { incr c } { |