HBRT Reserved Mem Trace Buffer implementation.

-Hostboot master Drawer will create TRACEBUF section in the HB
 Rsvd Mem and HBRT, while booting, gets the TRACEBUF section
 details and initializes the circual buffer, if available.
-If a valid data is present in the buffer, HBRT will create an
 info log ERRL, otherwise initializes the buffer.
-Traces from all components are serialized and stored in the
 single TRACEBUF in the same format (fsp-binary Trace). When
 buffer is full, it deletes the oldest entry/entries to store
 the new ones.
-ERRL->collectTrace() works similar to other buffers.
-A new test case is added to dump the traces from TRACEBUF.

Change-Id: I4ce943231a2ba30e3a13ca34d1c40ff68464a994
RTC:188726
RTC:191302
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/56450
Reviewed-by: Prachi Gupta <pragupta@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/src/include/usr/util/utilrsvdmem.H b/src/include/usr/util/utilrsvdmem.H
index aed49d54b..ed4d0e4f5 100644
--- a/src/include/usr/util/utilrsvdmem.H
+++ b/src/include/usr/util/utilrsvdmem.H
@@ -5,7 +5,7 @@
 /*                                                                        */
 /* OpenPOWER HostBoot Project                                             */
 /*                                                                        */
-/* Contributors Listed Below - COPYRIGHT 2017                             */
+/* Contributors Listed Below - COPYRIGHT 2017,2018                        */
 /* [+] International Business Machines Corp.                              */
 /*                                                                        */
 /*                                                                        */
@@ -49,6 +49,9 @@ namespace Util
     // Ascii label "HYPCOMM " in hex
     constexpr hbrt_mem_label_t HBRT_MEM_LABEL_HYPCOMM  = 0x485950434f4d4d20;
 
+    // Ascii label "TRACEBUF" in hex
+    constexpr hbrt_mem_label_t HBRT_MEM_LABEL_TRACEBUF  = 0x5452414345425546;
+
     /** @brief A 32 byte table of contents entry */
     struct hbrtTableOfContentsEntry_t
     {
@@ -62,6 +65,9 @@ namespace Util
     #define HBRT_TOC_MAX_ENTRIES \
                 (((4*KILOBYTE) - 64) / sizeof(hbrtTableOfContentsEntry_t))
 
+    // HBRT Reserved memory size for TRACEBUF
+    constexpr uint64_t HBRT_RSVD_TRACEBUF_SIZE = (64*KILOBYTE);
+
     /** @brief A 4KB Table of Contents */
     struct hbrtTableOfContents_t
     {