From 30cd84febe39134df6d837538e68e25ca9fb8b76 Mon Sep 17 00:00:00 2001
From: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Date: Wed, 21 Feb 2018 11:14:11 +0530
Subject: Add support to find relocated payload base address

OPAL relocates itself after boot. During MPIPL, hostboot needs to access
relocated SPIRAH. Hence lets add support to get relocated payload base address.

OPAL will use SBE stash chip-op to send relocated address to SBE. During early
IPL SBE sends stashed data to hostboot. And hostboot will use that information
to find relocated payload (OPAL) base.

SBE stash chip op:
  key = 0x03
  val = <relocated payload base address>

Change-Id: I1089bd38f32b01b877d1580ba76313fc250e5c08
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55190
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
---
 src/usr/runtime/hdatservice.C | 27 +++++++++++++++++++++++++++
 src/usr/runtime/hdatservice.H | 17 +++++++++++++++++
 2 files changed, 44 insertions(+)

(limited to 'src/usr/runtime')

diff --git a/src/usr/runtime/hdatservice.C b/src/usr/runtime/hdatservice.C
index 4fd752653..88e80e9a0 100644
--- a/src/usr/runtime/hdatservice.C
+++ b/src/usr/runtime/hdatservice.C
@@ -38,6 +38,7 @@
 #include "hdatservice.H"
 #include "errlud_hdat.H"
 #include <errl/errlmanager.H>
+#include <targeting/attrrp.H>
 
 //#define REAL_HDAT_TEST
 
@@ -316,6 +317,7 @@ hdatService::hdatService(void)
 :iv_spiraL(NULL)
 ,iv_spiraH(NULL)
 ,iv_spiraS(NULL)
+,iv_useRelocatedPayload(false)
 {
     for( uint8_t id = static_cast<uint8_t>(RUNTIME::FIRST_SECTION);
          id <= static_cast<uint8_t>(RUNTIME::LAST_SECTION);
@@ -492,6 +494,26 @@ errlHndl_t hdatService::loadHostData(void)
             uint64_t hdat_start = payload_base*MEGABYTE;
             uint64_t hdat_size = HDAT_MEM_SIZE;
 
+            // OPAL relocates itself after boot. Hence get relocated payload
+            // address. If relocated address not available then use normal
+            // base address (as OPAL would have crashed during early init).
+            if (iv_useRelocatedPayload == true &&
+                TARGETING::PAYLOAD_KIND_SAPPHIRE == payload_kind)
+            {
+                uint64_t reloc_base;
+
+                reloc_base = TARGETING::AttrRP::getHbDataRelocPayloadAddr();
+                if (reloc_base != 0)
+                {
+                    hdat_start = reloc_base;
+                    TRACFCOMP( g_trac_runtime, "Relocated payload base =%p", hdat_start);
+                }
+                else
+                {
+                    TRACFCOMP( g_trac_runtime, "No relocated payload base found, continuing on");
+                }
+            }
+
 #ifdef REAL_HDAT_TEST
             hdat_start = 256*MEGABYTE;
 #endif
@@ -1745,6 +1767,11 @@ errlHndl_t writeActualCount( SectionId i_id )
     return Singleton<hdatService>::instance().writeActualCount(i_id);
 }
 
+void useRelocatedPayloadAddr(bool val)
+{
+    return Singleton<hdatService>::instance().useRelocatedPayloadAddr(val);
+}
+
 /**
  * @brief  Retrieve and log FFDC data relevant to a given section of
  *         host data memory
diff --git a/src/usr/runtime/hdatservice.H b/src/usr/runtime/hdatservice.H
index 9e3be107b..44ff12a58 100644
--- a/src/usr/runtime/hdatservice.H
+++ b/src/usr/runtime/hdatservice.H
@@ -302,6 +302,12 @@ namespace RUNTIME
          */
         uint16_t iv_actuals[RUNTIME::LAST_SECTION+1];
 
+        /**
+         * Used to identify whether to use relocated payload base address
+         * or normal address.
+         */
+        bool iv_useRelocatedPayload;
+
         /**
          * Dummy value for unassigned actual
          */
@@ -339,6 +345,17 @@ namespace RUNTIME
             }
             return l_err;
         }
+
+        /**
+         * @brief  Use relocated payload base address
+         *
+         * @param[in] val  'true' for post dump data collection
+         *
+         */
+        void useRelocatedPayloadAddr(bool val)
+        {
+            iv_useRelocatedPayload = val;
+        }
     };
 
 };
-- 
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