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-rw-r--r--external/mambo/skiboot.tcl23
1 files changed, 22 insertions, 1 deletions
diff --git a/external/mambo/skiboot.tcl b/external/mambo/skiboot.tcl
index 38298bff..6c40289f 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 } {
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