Update quad power off so HB can call it on Slave Quads

Previously this HWP was only being called by the SBE down the MPIPL
but we also need to call it during HB to power down the slave quads.
There is a tricky workaround in this HWP where we need to save off
some ring data EQ pointers for the PB. On the SBE we just saved
the rings in global variables but we cannot do that in HB because
the Hcode would not have access to the global varibles. Instead
we will write the ring data to the OCC SRAM to do this I will
just pass the data out of the hwp via an out param
The same ring data is fetch during cache_initf procedure to init

Change-Id: I4f20cd8dd9ca1b53604db1bc3020c0d57bbd1172
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/36828
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Matt K. Light <mklight@us.ibm.com>
Reviewed-by: RAJA DAS <rajadas2@in.ibm.com>
Reviewed-by: YUE DU <daviddu@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/37977
Reviewed-by: Hostboot Team <hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>

1 files changed, 7 insertions, 8 deletions

diff --git a/src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.H b/src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.H
index 9c684aaf..4c6b0065 100644
--- a/src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.H
+++ b/src/import/chips/p9/procedures/hwp/pm/p9_quad_power_off.H
@@ -48,14 +48,10 @@
 // Constant definitions
 //------------------------------------------------------------------------------
 
-#ifdef __PPE__
-    extern uint64_t G_ring_save[8];
-    extern const uint64_t G_ring_index[10];
-#endif
-
 // function pointer typedef definition for HWP call support
 typedef fapi2::ReturnCode (*p9_quad_power_off_FP_t) (
-    const fapi2::Target<fapi2::TARGET_TYPE_EQ>& i_target);
+    const fapi2::Target<fapi2::TARGET_TYPE_EQ>& i_target,
+    uint64_t* o_ring_save_data);
 
 extern "C"
 {
@@ -66,12 +62,15 @@ extern "C"
     /**
      ** @brief Power off the EQ including the functional cores associatated with it.
      **
-     ** @param[in] i_target    Targe type EQ
+     ** @param[in]  i_target         Targe type EQ
+     ** @param[out] o_ring_save_data The ring data that tells the PB how to find the
+     **                              EQ will need to be saved away for when we p-on
      **
      ** @return FAPI2_RC_SUCCESS if success, error otherwise
      **/
     fapi2::ReturnCode p9_quad_power_off (
-        const fapi2::Target<fapi2::TARGET_TYPE_EQ>& i_target);
+        const fapi2::Target<fapi2::TARGET_TYPE_EQ>& i_target,
+        uint64_t* o_ring_save_data);
 
 } // extern "C"