attr for ipmi max_buffer for hbrt

pass the ipmi max_buffer size from hostboot during ipl to
hostboot runtime via targeting attribute

Change-Id: I5971333fd3950af65c66a2936b00a0d4ad907330
RTC: 124099
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/15820
Tested-by: Jenkins Server
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

2 files changed, 22 insertions, 8 deletions

diff --git a/src/usr/ipmi/runtime/makefile b/src/usr/ipmi/runtime/makefile
index 6fa93cc6d..6f49d9ef1 100644
--- a/src/usr/ipmi/runtime/makefile
+++ b/src/usr/ipmi/runtime/makefile
@@ -26,9 +26,9 @@ HOSTBOOT_RUNTIME = 1
 ROOTPATH = ../../../..
 MODULE = ipmi_rt
 
-OBJS += ipmidcmi.o
-OBJS += ipmisel.o
-OBJS += ipmisensor.o
+#include common ojects between hostboot and runtime hostboot
+include ../ipmi.mk
+
 OBJS += rt_ipmirp.o
 
 SUBDIRS += test.d
diff --git a/src/usr/ipmi/runtime/rt_ipmirp.C b/src/usr/ipmi/runtime/rt_ipmirp.C
index 7184c85f7..f99723adf 100644
--- a/src/usr/ipmi/runtime/rt_ipmirp.C
+++ b/src/usr/ipmi/runtime/rt_ipmirp.C
@@ -54,11 +54,25 @@ trace_desc_t * g_trac_ipmi;
 
 namespace IPMI
 {
-    // TODO RTC: 124099 move to a _hb attribute
-    // ATTR_IPMI_MAX_BUFFER_SEND_SIZE
-    static const size_t g_max_buffer = 61;
+    static size_t g_max_buffer = 0;
     size_t max_buffer(void)
     {
+        if (g_max_buffer == 0)
+        {
+            TARGETING::Target * sys = NULL;
+            TARGETING::targetService().getTopLevelTarget( sys );
+            if (sys)
+            {
+                g_max_buffer = sys->getAttr
+                                <TARGETING::ATTR_IPMI_MAX_BUFFER_SIZE>();
+                IPMI_TRAC( INFO_MRK"getAttr(IPMI_MAX_BUFFER_SIZE) = %d",
+                        g_max_buffer);
+            }
+            else
+            {
+                IPMI_TRAC( ERR_MRK"IPMI_MAX_BUFFER_SIZE not available" );
+            }
+        }
         return g_max_buffer;
     }
 
@@ -73,14 +87,14 @@ namespace IPMI
         int rc = 0;
 
         // if the buffer is too large this is a programming error.
-        assert(io_len <= g_max_buffer);
+        assert(io_len <= max_buffer());
 
         IPMI_TRAC("calling sync %x:%x  len=%d",
             i_cmd.first, i_cmd.second, io_len);
 
         if(g_hostInterfaces && g_hostInterfaces->ipmi_msg)
         {
-            size_t l_len = g_max_buffer; // max size the BMC can return
+            size_t l_len = max_buffer(); // max size the BMC can return
             uint8_t *l_data = new uint8_t[l_len];
 
             rc = g_hostInterfaces->ipmi_msg(