EQ SCOM Restore: Introduced version control in SCOM restore entry.

    - introduces version control in header of SCOM restore entry
    - ensures backward compatibility
    - introduces flexibility to handle any number of SCOM restore entry.

Key_Cronus_Test=NO_TEST

CQ:HW423686
HW-Image-Prereq: Ie1611b009e95192a0dad3a47af14ef8a36dd454b
Change-Id: I084ebcfda24ba2ef8501a94373aaf474036e8c12
Original-Change-Id: I781b0862dc983001574ba5f09a84ea0a2f7f781f
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/48793
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: RANGANATHPRASAD G. BRAHMASAMUDRA <prasadbgr@in.ibm.com>
Reviewed-by: Gregory S. Still <stillgs@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>

1 files changed, 26 insertions, 2 deletions

diff --git a/import/chips/p9/procedures/ppe_closed/sgpe/stop_gpe/p9_sgpe_stop.h b/import/chips/p9/procedures/ppe_closed/sgpe/stop_gpe/p9_sgpe_stop.h
index 95f66d28..c6b62280 100644
--- a/import/chips/p9/procedures/ppe_closed/sgpe/stop_gpe/p9_sgpe_stop.h
+++ b/import/chips/p9/procedures/ppe_closed/sgpe/stop_gpe/p9_sgpe_stop.h
@@ -258,6 +258,13 @@ enum SGPE_STOP_VECTOR_INDEX
 
 };
 
+enum SCOM_RESTORE_CONST
+{
+    SCOM_ENTRY_MARK             =   0xDEADDEAD,
+    SCOM_REST_SIZE_PER_EQ       =   0x300,    //default size
+    SCOM_REST_SKIP_CODE         =   0x60000000,
+};
+
 typedef struct
 {
     // requested stop state calculated from core stop levels
@@ -326,13 +333,30 @@ typedef struct
     PkSemaphore  sem[2];
 } SgpeStopRecord __attribute__ ((aligned (8)));
 
-typedef struct
+/// SCOM restore entry header description
+typedef struct __attribute__((__packed__)) ScomRestoreHeader
 {
-    uint32_t scomEntryHeader;
+    uint32_t entryType: 1;      // 0 - 0xDEADDEAD, 1 - under version control
+    uint32_t entryVersion: 3;   // version number
+    uint32_t reserved: 20;      // reserved
+    uint32_t entryLimit: 8;     // Max scom entries allowed
+} ScomRestoreHeader_t;
+
+typedef union __attribute__((__packed__)) ScomRestValdityMark
+{
+    ScomRestoreHeader_t scomRestHeader;
+    uint32_t            scomRestHeaderValue;
+}  ScomRestValdityMark_t;
+
+/// SCOM restore entry description
+typedef struct __attribute__((__packed__)) ScomEntry
+{
+    ScomRestValdityMark_t scomEntryHeader;
     uint32_t scomEntryAddress;
     uint64_t scomEntryData;
 } ScomEntry_t;
 
+
 #if HW386311_NDD1_PBIE_RW_PTR_STOP11_FIX
 // Types for PB EQ asynch work-around
 struct ring_save