HWPF Attribute Support: DIMM SPD Attributes - RTC4590

Change-Id: I4557a6a67ea73f13e2bcca6e05af57cba8d5a9e1
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/613
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/src/usr/hwpf/plat/fapiPlatAttributeService.C b/src/usr/hwpf/plat/fapiPlatAttributeService.C
index b106cbb6e..916e11b5e 100644
--- a/src/usr/hwpf/plat/fapiPlatAttributeService.C
+++ b/src/usr/hwpf/plat/fapiPlatAttributeService.C
@@ -33,10 +33,13 @@
 // Includes
 //******************************************************************************
 
+#include <hwpf/fapi/fapiTarget.H>
 #include <targeting/targetservice.H>
 #include <errl/errlentry.H>
 #include <hwpf/plat/fapiPlatAttributeService.H>
 #include <hwpf/plat/fapiPlatReasonCodes.H>
+#include <spd/spdenums.H>
+#include <devicefw/driverif.H>
 
 // The following file checks at compile time that all HWPF attributes are
 // handled by Hostboot. This is done to ensure that the HTML file listing
@@ -99,6 +102,99 @@ fapi::ReturnCode createAttrAccessError(
     return l_rc;
 }
 
+//******************************************************************************
+// platUpdateAttrValue function reformats the Attribute value if needed based
+// on the format documented in the HWPF attributei xml file.
+//******************************************************************************
+static void platUpdateAttrValue( const uint16_t i_keyword, void * o_data )
+{
+    FAPI_DBG(ENTER_MRK "platUpdateAttrValue");
+
+    uint32_t l_word = 0;
+    uint8_t *l_byte = static_cast<uint8_t *>(o_data);
+    bool l_update = true;
+
+    switch( i_keyword )
+    {
+        // These attributes are 4-byte uint32_t values. The DD returns 2-byte
+        // left-aligned value. Need to move it to right-aligned format.
+        case SPD::CAS_LATENCIES_SUPPORTED:
+        case SPD::TRAS_MIN:
+        case SPD::TRC_MIN:
+        case SPD::TRFC_MIN:
+        case SPD::TFAW_MIN:
+        case SPD::MODULE_MANUFACTURING_DATE:
+        case SPD::MODULE_MANUFACTURER_ID:
+            l_word |= (*l_byte++ << 8);
+            l_word |= (*l_byte);
+            break;
+        // These attributes are 4-bytes uint32_t values. The DD returns 2-byte
+        // left-aligned and byte-swapped value. Need to move it to right-aligned
+        // and reverse the bytes
+        case SPD::MODULE_CRC:
+        case SPD::MODULE_REVISION_CODE:
+        case SPD::DRAM_MANUFACTURER_ID:
+            l_word |= (*l_byte++);
+            l_word |= (*l_byte << 8);
+            break;
+        // This attribute are 4-bytes uint32_t. The DD returns in big-endian
+        // format. Need to change to little endian
+        case SPD::MODULE_SERIAL_NUMBER:
+            l_word |= (*l_byte++);
+            l_word |= (*l_byte++ << 8);
+            l_word |= (*l_byte++ << 16);
+            l_word |= (*l_byte << 24);
+            break;
+        default:
+            l_update = false;
+            break;
+    }
+
+    if (l_update)
+    {
+        memcpy( o_data, &l_word, sizeof(l_word) );
+    }
+
+    FAPI_DBG(EXIT_MRK "platUpdateAttrValue");
+
+}
+
+//******************************************************************************
+// fapiPlatGetSpdAttr function.
+// Call SPD device driver to retrieve the SPD attribute
+//******************************************************************************
+fapi::ReturnCode fapiPlatGetSpdAttr(const fapi::Target * i_target,
+                                    const uint16_t i_keyword,
+                                    void * o_data, const size_t i_len)
+{
+    FAPI_DBG(ENTER_MRK "fapiPlatGetSpdAttr");
+
+    fapi::ReturnCode l_rc;
+
+    // Extract the component pointer
+    TARGETING::Target* l_target =
+                         reinterpret_cast<TARGETING::Target*>(i_target->get());
+
+    errlHndl_t l_err = NULL;
+    size_t l_len = i_len;
+    l_err = deviceRead( l_target, o_data, l_len, DEVICE_SPD_ADDRESS(i_keyword));
+
+    if (l_err)
+    {
+        // Add the error log pointer as data to the ReturnCode
+        FAPI_ERR("platGetSpdAttr: deviceOp() returns error");
+        l_rc.setPlatError(reinterpret_cast<void *> (l_err));
+    }
+    else
+    {
+        platUpdateAttrValue( i_keyword, o_data );
+    }
+
+    FAPI_DBG(EXIT_MRK "fapiPlatGetSpdAttr");
+    return l_rc;
+
+}
+
 } // End platAttrSvc namespace
 
 } // End fapi namespace