Dynamic ATTR Override support via debug interface

  -Supported by debug tools (ecmd-debug-framework/Cronus)
    Only in istep mode and between isteps
    Requires HB to be running
  -Uses output of attributeOverride tool (same format as ATTR_TMP)
  -Introduces two new "debug" isteps
     255,4,set_attr_overrides
     255,5,clear_attr_overrides
  -Once istep is triggered Hostboot sends down address/size
    and the debug tool uses putmempba to push data to cache/mem.
    Then Hostboot consumes just like ATTR_TMP

Change-Id: I4ade7b85acac077a15bdb36bba1ef9df4263b428
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/41271
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Prachi Gupta <pragupta@us.ibm.com>
Reviewed-by: Martin Gloff <mgloff@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

4 files changed, 36 insertions, 2 deletions

diff --git a/src/include/usr/fapi2/plat_attr_override_sync.H b/src/include/usr/fapi2/plat_attr_override_sync.H
index 83d8fff53..4be640e33 100644
--- a/src/include/usr/fapi2/plat_attr_override_sync.H
+++ b/src/include/usr/fapi2/plat_attr_override_sync.H
@@ -227,6 +227,23 @@ public:
     void triggerAttrSync();
 
     /**
+     * @brief This function will clear all attribute overrides in effect.
+     *        This function is called by the debug interface
+     *
+     */
+    void clearAttrOverrides();
+
+    /**
+     * @brief This function will allow the debug interface to set
+     *        attribut overrides "dynamically" at any point in the IPL
+     *        between isteps.  The debug interface is used to process
+     *        the attributes in the same format as the ATTR_TMP and ATTR_PERM
+     *        PNOR partition binary blobs
+     *
+     */
+    void dynSetAttrOverrides();
+
+    /**
      * @brief This function actually sends the FAPI Sync tank attributes
      *  across the debug interface
      */
diff --git a/src/include/usr/isteps/spless_255list.H b/src/include/usr/isteps/spless_255list.H
index 3f445ce37..8eb69b7bd 100644
--- a/src/include/usr/isteps/spless_255list.H
+++ b/src/include/usr/isteps/spless_255list.H
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2012,2016                        */
+/* Contributors Listed Below - COPYRIGHT 2012,2017                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -64,6 +64,8 @@ namespace   INITSERVICE
     const   uint8_t     CTL_CONT_TRACE_ENABLE  =   0x01;
     const   uint8_t     FLUSH_TRACE_BUFS       =   0x02;
     const   uint8_t     DUMP_FAPI_ATTR         =   0x03;
+    const   uint8_t     SET_ATTR_OVERRIDES     =   0x04;
+    const   uint8_t     CLEAR_ATTR_OVERRIDES   =   0x05;
 
 
     const   TaskInfo    g_istep255[]  =   {
@@ -87,6 +89,16 @@ namespace   INITSERVICE
                 NULL,
                 { NONE, EXT_IMAGE, IPL_NOOP, false }
         },
+        {
+                ISTEPNAME(255,4, "set_attr_overrides"),
+                NULL,
+                { NONE, EXT_IMAGE, IPL_NOOP, false }
+        },
+        {
+                ISTEPNAME(255,5, "clear_attr_overrides"),
+                NULL,
+                { NONE, EXT_IMAGE, IPL_NOOP, false }
+        },
 };
 
 const DepModInfo g_istep255Dependancies = {
diff --git a/src/include/usr/util/utilmbox_scratch.H b/src/include/usr/util/utilmbox_scratch.H
index dd9584c18..31d67b8ee 100644
--- a/src/include/usr/util/utilmbox_scratch.H
+++ b/src/include/usr/util/utilmbox_scratch.H
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2012,2016                        */
+/* Contributors Listed Below - COPYRIGHT 2012,2017                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -60,6 +60,7 @@ namespace Util
 
         MSG_TYPE_TRACE          =       0x00,
         MSG_TYPE_ATTRDUMP       =       0x01,
+        MSG_TYPE_ATTROVERRIDE   =       0x02,
 
     };
 
diff --git a/src/include/usr/vmmconst.h b/src/include/usr/vmmconst.h
index 8c73b9867..2f25d7d14 100644
--- a/src/include/usr/vmmconst.h
+++ b/src/include/usr/vmmconst.h
@@ -102,6 +102,10 @@
 #define VMM_VADDR_SBE_UPDATE (3 * GIGABYTE)
 #define VMM_SBE_UPDATE_SIZE (900 * KILOBYTE)
 #define VMM_VADDR_SBE_UPDATE_END (VMM_VADDR_SBE_UPDATE + VMM_SBE_UPDATE_SIZE)
+/** Debug Comm Channel is at 3.5GB, uses 32KB */
+#define VMM_VADDR_DEBUG_COMM ((3 * GIGABYTE) + (500 * MEGABYTE))
+#define VMM_DEBUG_COMM_SIZE (32 * KILOBYTE)
+#define VMM_VADDR_DEBUG_COMM_END (VMM_VADDR_DEBUG_COMM + VMM_DEBUG_COMM_SIZE)
 
 /** Attribute Resource Provider */
 // Note: Not simplified to make it easier to extract with the PNOR targeting