Add attr to control endian swap of OMI CFG reg data on Explorer

Change-Id: I3834e170cbf1594ede6854cf23c1e6184e6357dd
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/78411
Reviewed-by: STEPHEN GLANCY <sglancy@us.ibm.com>
Reviewed-by: Mark Pizzutillo <mark.pizzutillo@ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Jennifer A Stofer <stofer@us.ibm.com>
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/78468
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Tested-by: Daniel M. Crowell <dcrowell@us.ibm.com>

2 files changed, 52 insertions, 3 deletions

diff --git a/src/import/chips/ocmb/explorer/procedures/hwp/memory/exp_inband.C b/src/import/chips/ocmb/explorer/procedures/hwp/memory/exp_inband.C
index a18fa4ba1..4d2f89ffe 100644
--- a/src/import/chips/ocmb/explorer/procedures/hwp/memory/exp_inband.C
+++ b/src/import/chips/ocmb/explorer/procedures/hwp/memory/exp_inband.C
@@ -127,10 +127,28 @@ fapi2::ReturnCode putOCCfg(
     const uint64_t i_cfgAddr,
     const fapi2::buffer<uint32_t>& i_data)
 {
+    fapi2::Target<fapi2::TARGET_TYPE_SYSTEM> FAPI_SYSTEM;
     uint32_t l_v = static_cast<uint32_t>(i_data);
     std::vector<uint8_t> l_wd;
-    forceLE(l_v, l_wd);
-    return fapi2::putMMIO(i_target, i_cfgAddr, 4, l_wd);
+    fapi2::ATTR_MSS_OCMB_EXP_OMI_CFG_ENDIAN_CTRL_Type l_endian;
+
+    FAPI_TRY( FAPI_ATTR_GET(fapi2::ATTR_MSS_OCMB_EXP_OMI_CFG_ENDIAN_CTRL,
+                            FAPI_SYSTEM, l_endian));
+
+    if (l_endian == fapi2::ENUM_ATTR_MSS_OCMB_EXP_OMI_CFG_ENDIAN_CTRL_LITTLE_ENDIAN)
+    {
+        forceLE(l_v, l_wd);
+    }
+    else
+    {
+        forceBE(l_v, l_wd);
+    }
+
+    FAPI_TRY( fapi2::putMMIO(i_target, i_cfgAddr, 4, l_wd) );
+
+fapi_try_exit:
+    FAPI_DBG("Exiting with return code : 0x%08X...", (uint64_t) fapi2::current_err);
+    return fapi2::current_err;
 }
 
 
@@ -397,11 +415,26 @@ fapi2::ReturnCode getOCCfg(
     const uint64_t i_cfgAddr,
     fapi2::buffer<uint32_t>& o_data)
 {
+    fapi2::Target<fapi2::TARGET_TYPE_SYSTEM> FAPI_SYSTEM;
     uint32_t l_rd = 0;
     std::vector<uint8_t> l_data(4);
     uint32_t l_idx = 0;
+    fapi2::ATTR_MSS_OCMB_EXP_OMI_CFG_ENDIAN_CTRL_Type l_endian;
+
+    FAPI_TRY( FAPI_ATTR_GET(fapi2::ATTR_MSS_OCMB_EXP_OMI_CFG_ENDIAN_CTRL,
+                            FAPI_SYSTEM, l_endian));
+
     FAPI_TRY(fapi2::getMMIO(i_target, i_cfgAddr, 4, l_data));
-    readLE(l_data, l_idx, l_rd);
+
+    if (l_endian == fapi2::ENUM_ATTR_MSS_OCMB_EXP_OMI_CFG_ENDIAN_CTRL_LITTLE_ENDIAN)
+    {
+        readLE(l_data, l_idx, l_rd);
+    }
+    else
+    {
+        readBE(l_data, l_idx, l_rd);
+    }
+
     o_data = l_rd;
 fapi_try_exit:
     FAPI_DBG("Exiting with return code : 0x%08X...", (uint64_t) fapi2::current_err);
diff --git a/src/import/chips/ocmb/explorer/procedures/xml/attribute_info/exp_attributes.xml b/src/import/chips/ocmb/explorer/procedures/xml/attribute_info/exp_attributes.xml
index 28f7c41ea..5e825c90f 100644
--- a/src/import/chips/ocmb/explorer/procedures/xml/attribute_info/exp_attributes.xml
+++ b/src/import/chips/ocmb/explorer/procedures/xml/attribute_info/exp_attributes.xml
@@ -334,6 +334,22 @@
     </attribute>
 
     <attribute>
+        <id>ATTR_MSS_OCMB_EXP_OMI_CFG_ENDIAN_CTRL</id>
+        <targetType>TARGET_TYPE_SYSTEM</targetType>
+        <description>
+          Controls whether OMI CFG reg accesses
+          are considered big or little endian.
+        </description>
+        <valueType>uint8</valueType>
+        <initToZero></initToZero>
+        <enum>
+            LITTLE_ENDIAN = 0,
+            BIG_ENDIAN = 1
+        </enum>
+        <writeable/>
+    </attribute>
+
+    <attribute>
         <id>ATTR_MSS_OCMB_ECID</id>
         <targetType>TARGET_TYPE_OCMB_CHIP</targetType>
         <description>