Remove Nimbus dependencies from the SPD decoder

Created a new pre_data_engine to set preliminary data
needed before eff_config. Moved SPD to attribute mapping
to eff_dimm structure and away from the SPD decoder to make
it reusable for future memory controllers. Updated bugs in
unit tests. Added SPD factory classes.

This is only needed for Axone.

Change-Id: I2cd29e67bac069496670d4b264da17007049b48b
Original-Change-Id: Ief0a479ee1c7a4dab852ffb18b595564c0125e35
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/58611
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Dev-Ready: ANDRE A. MARIN <aamarin@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: STEPHEN GLANCY <sglancy@us.ibm.com>
Reviewed-by: Louis Stermole <stermole@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>

src/import/generic/memory/lib/utils/shared/mss_generic_consts.H

@@ -42,6 +42,20 @@
 namespace mss
 {
 
+///
+/// @brief Common conversions
+///
+enum conversions
+{
+    CONVERT_PS_IN_A_NS      = 1000,     ///< 1000 pico in an nano
+    CONVERT_PS_IN_A_US      = 1000000,  ///< 1000000 picos in a micro
+    MHZ_TO_KHZ              = 1000,
+    SEC_IN_HOUR             = 60 * 60,  ///< seconds in an hour, used for scrub times
+    NIBBLES_PER_BYTE = 2,
+    BITS_PER_NIBBLE = 4,
+    BITS_PER_BYTE = 8,
+};
+
 ///
 /// @brief FFDC generic codes
 ///
@@ -58,22 +72,58 @@ enum generic_ffdc_codes
     PRE_DATA_ENGINE_CTOR = 0x1005,
     EXTRACT_SPD_FLD = 0x1006,
     SPD_READER = 0x1007,
-    BASE_CNFG_MAKE_OBJ = 0x1008,
-    DIMM_MODULE_MAKE_OBJ = 0x1009,
-    CREATE_BASE_CNFG_FACTORY = 0x100A,
-    CREATE_MODULE_FACTORY = 0x100B,
+    BASE_CFG_PARAM_SELECT = 0x1008,
+    DIMM_MODULE_PARAM_SELECT = 0x1009,
+    BASE_CFG_FACTORY = 0x100A,
+    DIMM_MODULE_FACTORY = 0x100B,
+    GET_TAAMIN = 0x100C,
+    GET_TCKMIN = 0x100D,
+    GET_TCKMAX = 0x100E,
     GET_TIMEBASES_FTB = 0x100F,
     GET_TIMEBASES_MTB = 0x1010,
+    GET_SUPPORTED_REV = 0x1011,
+    TRASMIN = 0x1012,
+    TRCMIN = 0x1013,
+    TRFC1MIN = 0x1014,
+    TRFC2MIN = 0x1015,
+    TRFC4MIN = 0x1016,
+    TFAWMIN = 0x1017,
+    TWTR_S_MIN = 0x1018,
+    TWRMIN = 0x1019,
+    TWTR_L_MIN = 0x101A,
+    DEVICE_TYPE = 0x101B,
+    BASE_MODULE_TYPE = 0x101C,
 };
 
 ///
-/// @brief DRAM generation selector
+/// @brief Supported proc types
 ///
-enum device_type
+enum proc_type
 {
-    DDR4 = 0x0c,
+    NIMBUS,
+    AXONE,
 };
 
+///
+/// @brief JEDEC supported DDR4 speeds
+///
+enum ddr4_dimm_speeds
+{
+    DIMM_SPEED_1600 = 1600,
+    DIMM_SPEED_1866 = 1866,
+    DIMM_SPEED_2133 = 2133,
+    DIMM_SPEED_2400 = 2400,
+    DIMM_SPEED_2666 = 2666,
+    DIMM_SPEED_2933 = 2933,
+    DIMM_SPEED_3200 = 3200,
+};
+
+namespace spd
+{
+
+///
+/// @brief SPD revisions - not tied any particular module
+///
 enum rev : uint8_t
 {
     V1_0 = 0x10, ///< represents Rev 1.0
@@ -93,11 +143,43 @@ enum rev : uint8_t
 ///
 enum parameters
 {
+    UNINITIALIZED,
     BASE_CNFG,
     RDIMM_MODULE,
     LRDIMM_MODULE,
+    NVDIMM_MODULE,
+};
+
+///
+/// @brief DRAM generation selector
+/// @note values set to SPD settings
+///
+enum device_type
+{
+    DDR4 = 0x0c,
+};
+
+///
+/// @brief DIMM type selector
+/// @note values set to SPD settings
+///
+enum dimm_type
+{
+    RDIMM = 0b0001,
+    LRDIMM = 0b0100,
+};
+
+enum guard_band : uint16_t
+{
+    // Used for caclulating spd timing values - from JEDEC rounding algorithm
+    // Correction factor is 1% (for DDR3) or 2.5% (for DDR4)
+    // when doing integer math, we add-in the inverse correction factor
+    // Formula used for derivation:
+    // Guardband = 1000 * (1000* correction_factor) - 1
+    INVERSE_DDR4_CORRECTION_FACTOR = 974, ///< DDR4 correction factor
 };
 
+}// spd
 }// mss
 
 #endif