Inform Sapphire about supported EX power states

Change-Id: Ied3b22e70032a1b3181d318b43e11be0117ae164
CQ: SW256780
Backport: release-fips810
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/10412
Tested-by: Jenkins Server
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

1 files changed, 17 insertions, 8 deletions

diff --git a/src/usr/devtree/bld_devtree.C b/src/usr/devtree/bld_devtree.C
index 16446a424..f82760fed 100644
--- a/src/usr/devtree/bld_devtree.C
+++ b/src/usr/devtree/bld_devtree.C
@@ -590,19 +590,28 @@ void load_hbrt_image(uint64_t& io_address)
 
 errlHndl_t bld_fdt_system(devTree * i_dt, bool i_smallTree)
 {
-    // Nothing to do for small trees currently.
-    if (i_smallTree) { return NULL; }
-
     errlHndl_t errhdl = NULL;
 
     dtOffset_t rootNode = i_dt->findNode("/");
 
-    /* Add compatibility node */
-    i_dt->addPropertyString(rootNode, "compatible", "ibm,powernv");
+    //Common settings
+    /* Define supported power states -- options:
+                         nap, deep-sleep, fast-sleep, winkle*/
+    const char* pmode_compatStrs[] = {"nap", "winkle", NULL};
+    i_dt->addPropertyStrings(rootNode, "ibm,enabled-idle-states",
+                             pmode_compatStrs);
+
+    // Nothing to do for small trees currently.
+    if (!i_smallTree)
+    {
 
-    /* Add system model node */
-    //TODO RTC:88056 - store model type in attributes?
-    i_dt->addPropertyString(rootNode, "model", "rhesus");
+        /* Add compatibility node */
+        i_dt->addPropertyString(rootNode, "compatible", "ibm,powernv");
+
+        /* Add system model node */
+        //TODO RTC:88056 - store model type in attributes?
+        i_dt->addPropertyString(rootNode, "model", "rhesus");
+    }
 
     return errhdl;
 }