From 47f5faba380312fe6d87ad4acca436686afdb244 Mon Sep 17 00:00:00 2001
From: Prem Shanker Jha <premjha2@in.ibm.com>
Date: Tue, 11 Dec 2018 05:37:48 -0600
Subject: SMF: Populates unsecure HOMER with SC2 instruction.

On an SMF enabled system, if HV engages self save, core must
must transition from HV to UV privilege to accomplish this.
So, before attempting self save, core must execute SC2
instruction with HV privilege inorder to be a UV. Commit is a
partial implementaiton of this solution. It populates a
buffer with SC2 instruction which hostboot will copy to an
unsecure memory.

- Updated attribute tags for MRW Hiding
- Removed writing of ATTR_UNSECURE_HOMER_SIZE in deference
  to attribute default checking

Key_Cronus_Test=PM_REGRESS

Change-Id: Idb5e219e2a5f9b2274602aedc420f390f34f2609
RTC: 202400
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/69655
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: PPE CI <ppe-ci+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Tested-by: Cronus HW CI <cronushw-ci+hostboot@us.ibm.com>
Reviewed-by: RANGANATHPRASAD G. BRAHMASAMUDRA <prasadbgr@in.ibm.com>
Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
Dev-Ready: Gregory S. Still <stillgs@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/69661
Reviewed-by: RAJA DAS <rajadas2@in.ibm.com>
---
 .../chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml  | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'src/import/chips/p9/procedures')

diff --git a/src/import/chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml b/src/import/chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml
index 13dc10dd..e35db500 100644
--- a/src/import/chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml
+++ b/src/import/chips/p9/procedures/xml/attribute_info/pm_plat_attributes.xml
@@ -2604,7 +2604,7 @@
   <attribute>
     <id>ATTR_UNSECURE_HOMER_SIZE</id>
     <targetType>TARGET_TYPE_SYSTEM</targetType>
-    <description>Size of memory which hostboot must copy from a temp buffer to
+    <description>Size of memory in bytes which hostboot must copy from a temp buffer to
     an unsecure region of main store memory. Once HOMER is built, hostboot reads
     the attribute and copies the amount of memory specified in this attribute from
     a temp buffer to an unsecure region of main memory specifed in an attribute
@@ -2612,8 +2612,9 @@
     Producer: Initialized by hostboot firmware based on platform support
     Consumers: Read by p9_hcode_image_build.C
     </description>
-    <writeable/>
+    <platInit/>
     <valueType>uint32</valueType>
-    <initToZero/>
+    <mrwHide/>
+    <default>1024</default>
   </attribute>
 </attributes>
-- 
cgit v1.2.1