support IO reconfig loop for OBUS DL link training failures

- p9c DD1.1+ only, DD1.0 not supported

- FW to trigger reconfig loop back to step 0 from
  sys_proc_fab_iovalid if:
  1) sys_proc_fab_iovalid rc = FAPI2_RC_SUCCESS
     -- AND --
  2) new output o_obus_dl_rcs (vector of P9_FAB_IOVALID_DL_NOT_TRAINED_ERR rc
     objects identifying links which failed on this chip) has entries

- attribute changes:
  ATTR_LINK_TRAIN -- remove platinit tag, attr should init to zero (both even
                     and odd), and reconfig loop will adjust value as we go

Change-Id: I95eebd2b893db6d2511aae40798c0a4e049835d6
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/59022
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Reviewed-by: Sachin Gupta <sgupta2m@in.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/59037

src/import/chips/p9/common/include/p9_obus_scom_addresses_fixes.H

@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER sbe Project                                                  */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2015,2017                        */
+/* Contributors Listed Below - COPYRIGHT 2015,2018                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -53,11 +53,15 @@ static const uint64_t SH_UNT_OBUS_2 = 515;
 
 REG64( OBUS_1_LL1_IOOL_CONTROL,
        RULL(0x0A01080B), SH_UNT_OBUS_1, SH_ACS_SCOM );
+REG64( OBUS_1_LL1_IOOL_DLL_STATUS,
+       RULL(0x0A010828), SH_UNT_OBUS_1, SH_ACS_SCOM );
 REG64( OBUS_1_LL1_LL1_LL1_PB_IOOL_FIR_REG,
        RULL(0x0A010800), SH_UNT_OBUS_2, SH_ACS_SCOM );
 
 REG64( OBUS_2_LL2_IOOL_CONTROL,
        RULL(0x0B01080B), SH_UNT_OBUS_2, SH_ACS_SCOM );
+REG64( OBUS_2_LL2_IOOL_DLL_STATUS,
+       RULL(0x0B010828), SH_UNT_OBUS_2, SH_ACS_SCOM );
 REG64( OBUS_2_LL2_LL2_LL2_PB_IOOL_FIR_REG,
        RULL(0x0B010800), SH_UNT_OBUS_2, SH_ACS_SCOM );
 

src/import/chips/p9/procedures/xml/attribute_info/nest_attributes.xml

@@ -533,10 +533,11 @@
   <enum>
     BOTH = 0x0,
     EVEN_ONLY = 0x1,
-    ODD_ONLY = 0x2
+    ODD_ONLY = 0x2,
+    NONE = 0x3
   </enum>
   <initToZero/>
-  <platInit/>
+  <writeable/>
 </attribute>
 <!-- ********************************************************************** -->
 <attribute>