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-rw-r--r--util/bincfg/ddr4_registered_spd_512.spec362
-rw-r--r--util/bincfg/ddr4_unbuffered_spd_512.spec335
-rwxr-xr-xutil/scripts/decode_spd.sh76
-rw-r--r--util/scripts/description.md2
4 files changed, 775 insertions, 0 deletions
diff --git a/util/bincfg/ddr4_registered_spd_512.spec b/util/bincfg/ddr4_registered_spd_512.spec
new file mode 100644
index 0000000000..126091e8f0
--- /dev/null
+++ b/util/bincfg/ddr4_registered_spd_512.spec
@@ -0,0 +1,362 @@
+# 4_01_02_AnnexL-R25_SPD_for_DDR4_SDRAM_Release_3_Sep2015.pdf
+#
+# JEDEC Standard No. 21-C
+# Page 4.1.2.12.3 – 1
+# Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules
+# DDR4 SPD Document Release 3
+# UDIMM Revision 1.1
+# RDIMM Revision 1.1
+# LRDIMM Revision 1.1
+# NVDIMM Revision 1.0
+
+{
+ # Byte 0: Number of Bytes Used / Number of Bytes in SPD Device /
+ # CRC Coverage
+ "SPD_Bytes_Used" : 4,
+ "SPD_Bytes_Total" : 3,
+ "CRC_Coverage" : 1,
+
+ # Byte 1: SPD Revision
+ "SPD_Revision" : 8,
+
+ # Byte 2: Key Byte / DRAM Device Type
+ "DRAM_Device_Type" : 8,
+
+ # Byte 3: Key Byte / Module Type
+ "Base_Module_Type" : 4,
+ "Hybrid_Media" : 3,
+ "Is_Hybrid" : 1,
+
+ # Byte 4: SDRAM Density and Banks
+ "SDRAM_Capacity" : 4,
+ "Bank_Address_Bits" : 2,
+ "Bank_Group_Bits" : 2,
+
+ # Byte 5: SDRAM Addressing
+ "Column_Address_Bits" : 3,
+ "Row_Address_Bits" : 3,
+ "Byte_5_reserved" : 2,
+
+ # Byte 6: SDRAM Package Type
+ "Signal_Loading" : 2,
+ "Byte_6_reserved" : 2,
+ "Die_Count" : 3,
+ "SDRAM_Package_Type" : 1,
+
+ # Byte 7: SDRAM Optional Features
+ "Maximum_Activate_Count" : 4,
+ "Maximum_Activate_Window" : 2,
+ "Byte_7_reserved" : 2,
+
+ # Byte 8: SDRAM Thermal and Refresh Options
+ "Byte_8_reserved" : 8,
+
+ # Byte 9: Other SDRAM Optional Features
+ "Byte_9_reserved" : 5,
+ "Soft_PPR" : 1,
+ "Post_Package_Repair" : 2,
+
+ # Byte 10: Secondary SDRAM Package Type
+ "Secondary_Signal_Loading" : 2,
+ "Secondary_DRAM_Densityt_Ratio" : 2,
+ "Secondary_Die_Count" : 3,
+ "Secondary_SDRAM_Package_Type" : 1,
+
+ # Byte 11: Module Nominal Voltage, VDD
+ "DRAM_VDD_1_2_V" : 2,
+ "Byte_11_reserved" : 6,
+
+ # Byte 12: Module Organization
+ "SDRAM_Device_Width" : 3,
+ "Number_of_Package_Ranks_per_DIMM" : 3,
+ "Rank_Mix" : 1,
+ "Byte_12_reserved" : 1,
+
+ # Byte 13: Module Memory Bus Width
+ "Primary_bus_width_in_bits" : 3,
+ "Bus_width_extension_in_bits" : 2,
+ "Byte_13_reserved" : 3,
+
+ # Byte 14: Module Thermal Sensor
+ "Byte_14_reserved" : 7,
+ "Thermal_Sensor" : 1,
+
+ # Byte 15: Extended Module Type
+ "Extended_Base_Module_Type" : 4,
+ "Byte_15_reserved" : 4,
+
+ # Byte 16: Reserved
+ "Byte_16_reserved" : 8,
+
+ # Byte 17: Timebases
+ "Fine_Timebase" : 2,
+ "Medium_Timebase" : 2,
+ "Byte_17_reserved" : 4,
+
+ # Byte 18: SDRAM Minimum Cycle Time (tCKAVGmin)
+ "tCKAVGmin" : 8,
+
+ # Byte 19: SDRAM Maximum Cycle Time (tCKAVGmax)
+ "tCKAVGmax" : 8,
+
+ # Bytes 20 - 23: CAS Latencies Supported
+ "CL_7_Supported" : 1,
+ "CL_8_Supported" : 1,
+ "CL_9_Supported" : 1,
+ "CL_10_Supported" : 1,
+ "CL_11_Supported" : 1,
+ "CL_12_Supported" : 1,
+ "CL_13_Supported" : 1,
+ "CL_14_Supported" : 1,
+
+ "CL_15_Supported" : 1,
+ "CL_16_Supported" : 1,
+ "CL_17_Supported" : 1,
+ "CL_18_Supported" : 1,
+ "CL_19_Supported" : 1,
+ "CL_20_Supported" : 1,
+ "CL_21_Supported" : 1,
+ "CL_22_Supported" : 1,
+
+ "CL_23_Supported" : 1,
+ "CL_24_Supported" : 1,
+ "CL_25_Supported" : 1,
+ "CL_26_Supported" : 1,
+ "CL_27_Supported" : 1,
+ "CL_28_Supported" : 1,
+ "CL_29_Supported" : 1,
+ "CL_30_Supported" : 1,
+
+ "CL_31_Supported" : 1,
+ "CL_32_Supported" : 1,
+ "CL_33_Supported" : 1,
+ "CL_34_Supported" : 1,
+ "CL_35_Supported" : 1,
+ "CL_36_Supported" : 1,
+ "Byte_23_reserved" : 1,
+ "CL_range" : 1,
+
+ # Byte 24: Minimum CAS Latency Time (tAAmin)
+ "tAAmin" : 8,
+
+ # Byte 25: Minimum RAS to CAS Delay Time (tRCDmin)
+ "tRCDmin" : 8,
+
+ # Byte 26: Minimum Row Precharge Delay Time (tRPmin)
+ "tRPmin" : 8,
+
+ # Bytes 27 - 29: Minimum Active to Precharge Delay Time (tRASmin)
+ # / Minimum Active to Active/Refresh Delay Time
+ # (tRCmin)
+ "tRASmin_MSN" : 4,
+ "tRCmin_MSN" : 4,
+ "tRASmin_LSB" : 8,
+ "tRCmin_LSB" : 8,
+
+ # Bytes 30 - 31: Minimum Refresh Recovery Delay Time (tRFC1min)
+ "tRFC1min_LSB" : 8,
+ "tRFC1min_MSB" : 8,
+
+ # Bytes 32 - 33: Minimum Refresh Recovery Delay Time (tRFC2min)
+ "tRFC2min_LSB" : 8,
+ "tRFC2min_MSB" : 8,
+
+ # Bytes 34 - 35: Minimum Refresh Recovery Delay Time (tRFC4min)
+ "tRFC4min_LSB" : 8,
+ "tRFC4min_MSB" : 8,
+
+ # Byte 36 - 37: Minimum Four Activate Window Delay Time
+ # (tFAWmin)
+ "tFAWmin_MSN" : 4,
+ "Byte_36_reserved" : 4,
+ "tFAWmin_LSB" : 8,
+
+ # Bytes 38: Minimum Activate to Activate Delay Time (tRRD_Smin),
+ # different bank group
+ "tRRD_Smin" : 8,
+
+ # Byte 39: Minimum Activate to Activate Delay Time (tRRD_Lmin),
+ # same bank group
+ "tRRD_Lmin" : 8,
+
+ # Byte 40: Minimum CAS to CAS Delay Time (tCCD_Lmin), same bank
+ # group
+ "tCCD_Lmin" : 8,
+
+ # Byte 41 - 42: Minimum Write Recovery Time (tWRmin)
+ "tWRmin_MSN" : 4,
+ "Byte_41_reserved" : 4,
+ "tWRmin_MSB" : 8,
+
+ # Byte 43-45: Minimum Write to Read Time (tWTR_Smin),
+ # different bank group / Minimum Write to Read Time
+ # (tWTR_Lmin), same bank group
+ "tWTR_Smin_MSN" : 4,
+ "tWTR_Lmin_MSN" : 4,
+ "tWTR_Smin_LSB" : 8,
+ "tWTR_Lmin_LSB" : 8,
+
+ # Byte 46~59: Reserved, Base Configuration Section
+ "Byte_46_59_reserved" [14] : 8,
+
+ # Byte 60: Connector to SDRAM Bit Mapping (DQ0-3)
+ "DQ0_3" : 8,
+ # Byte 61: Connector to SDRAM Bit Mapping (DQ4-7)
+ "DQ4_7" : 8,
+
+ # Byte 62: Connector to SDRAM Bit Mapping (DQ8-11)
+ "DQ8_11" : 8,
+
+ # Byte 63: Connector to SDRAM Bit Mapping (DQ12-15)
+ "DQ12_15" : 8,
+
+ # Byte 64: Connector to SDRAM Bit Mapping (DQ16-19)
+ "DQ16_19" : 8,
+
+ # Byte 65: Connector to SDRAM Bit Mapping (DQ20-23)
+ "DQ20_23" : 8,
+
+ # Byte 66: Connector to SDRAM Bit Mapping (DQ24-27)
+ "DQ24_27" : 8,
+
+ # Byte 67: Connector to SDRAM Bit Mapping (DQ28-31)
+ "DQ28_31" : 8,
+
+ # Byte 68: Connector to SDRAM Bit Mapping (CB0-3)
+ "CB0_3" : 8,
+
+ # Byte 69: Connector to SDRAM Bit Mapping (CB4-7)
+ "CB4_7" : 8,
+
+ # Byte 70: Connector to SDRAM Bit Mapping (DQ32-35)
+ "DQ32_35" : 8,
+
+ # Byte 71: Connector to SDRAM Bit Mapping (DQ36-39)
+ "DQ36_39" : 8,
+
+ # Byte 72: Connector to SDRAM Bit Mapping (DQ40-43)
+ "DQ40_43" : 8,
+
+ # Byte 73: Connector to SDRAM Bit Mapping (DQ44-47)
+ "DQ44_47" : 8,
+
+ # Byte 74: Connector to SDRAM Bit Mapping (DQ48-51)
+ "DQ48_51" : 8,
+
+ # Byte 75: Connector to SDRAM Bit Mapping (DQ52-55)
+ "DQ52_55" : 8,
+
+ # Byte 76: Connector to SDRAM Bit Mapping (DQ56-59)
+ "DQ56_59" : 8,
+
+ # Byte 77: Connector to SDRAM Bit Mapping (DQ60-63)
+ "DQ60_63" : 8,
+
+ # Bytes 78~116: Reserved, Base Configuration Section
+ # Must be coded as 0x00
+ "Byte_78_116_reserved" [39] : 8,
+
+ # Byte 117: Fine Offset for Minimum CAS to CAS Delay Time
+ # (tCCD_Lmin), same bank group
+ "tCCD_Lmin" : 8,
+
+ # Byte 118: Fine Offset for Minimum Activate to Activate Delay
+ # Time (tRRD_Lmin), same bank group
+ "tRRD_Lmin" : 8,
+
+ # Byte 119: Fine Offset for Minimum Activate to Activate Delay
+ # Time (tRRD_Smin), different bank group
+ "tRRD_Smin" : 8,
+
+ # Byte 120: Fine Offset for Minimum Active to Active/Refresh
+ # Delay Time (tRCmin)
+ "tRCmin" : 8,
+
+ # Byte 121: Fine Offset for Minimum Row Precharge Delay
+ # Time (tRPmin)
+ "tRPmin" : 8,
+
+ # Byte 122: Fine Offset for Minimum RAS to CAS Delay
+ # Time (tRCDmin)
+ "tRCDmin" : 8,
+
+ # Byte 123: Fine Offset for Minimum CAS Latency Time (tAAmin)
+ "tAAmin" : 8,
+
+ # Byte 124: Fine Offset for SDRAM Maximum Cycle Time
+ # (tCKAVGmax)
+ "tCKAVGmax" : 8,
+
+ # Byte 125: Fine Offset for SDRAM Minimum Cycle Time
+ # (tCKAVGmin)
+ "tCKAVGmin" : 8,
+
+ # Byte 126 - 127: Cyclical Redundancy Code (CRC) for
+ # Base Configuration Section
+ "CRC_Base_Configuration" : 16,
+
+# Standard Module Parameters - Overlay Bytes 128~191
+# Module Specific Bytes for Registered Memory Module Types
+
+ # Byte 128: Raw Card Extension, Module Nominal Height
+ "Module_Nominal_Height_Max" : 5,
+ "Raw_Card_Extension" : 3,
+
+ # Byte 129: Module Maximum Thickness
+ "Module_Maximum_Thickness_Front" : 4,
+ "Module_Maximum_Thickness_Back" : 4,
+
+ # Byte 130: Reference Raw Card Used
+ "Reference_Raw_Card" : 5,
+ "Reference_Raw_Card_Revision" : 2,
+ "Reference_Raw_Card_Extension" : 1,
+
+ # Byte 131: DIMM Attributes
+ "Number_of_Registers_used_on_RDIMM" : 2,
+ "Number_of_DRAMS_on_RDIMM" : 2,
+ "Register_Type" : 4,
+
+ # Byte 132: RDIMM Thermal Heat Spreader Solution
+ "Heat_Spreader_Thermal_Characteristics" : 7,
+ "Heat_Spreader_Solution" : 1,
+
+ # Byte 133 - 134: Register Manufacturer ID Code
+ "Register_Manufacturer_ID_Code" : 16,
+
+ # Byte 135: Register Revision Number
+ "Register_Revision_Number" : 8,
+
+ # Byte 136: Address Mapping from Register to DRAM
+ "Rank_1_Mapping" : 1,
+ "Byte_136_Reserved" : 7,
+
+ # Byte 137: Register Output Drive Strength for
+ # Control and Command/Address
+ "Register_Output_Drive_CKE" : 2,
+ "Register_Output_Drive_ODT" : 2,
+ "Register_Output_Drive_Command_Address" : 2,
+ "Register_Output_Drive_Chip_Select" : 2,
+
+ # Byte 138: Register Output Drive Strength for Clock
+ "Register_Output_Drive_Strength_Clock_Y0_Y2" : 2,
+ "Register_Output_Drive_Strength_Clock_Y1_Y3" : 2,
+ "Byte_138_reserved" : 4,
+
+ # Byte 139 - 191: Reserved
+ "Byte_139_191" [53] : 8,
+
+# Unused
+ # Byte 192 - 253: Unused
+ "Byte_192_255_unused" [62] : 8,
+
+ # Byte 254 - 255: CRC for SPD Block 1
+ "CRC_SPD_Block_1" : 16,
+
+# Reserved
+ # Byte 256 - 319: Reserved
+ "Byte_256_319_reserved" [64] : 8,
+
+# End User Programmable
+ # Byte 384 - 511
+ "End_User_Programmable" [128] : 8
+}
diff --git a/util/bincfg/ddr4_unbuffered_spd_512.spec b/util/bincfg/ddr4_unbuffered_spd_512.spec
new file mode 100644
index 0000000000..594258e16b
--- /dev/null
+++ b/util/bincfg/ddr4_unbuffered_spd_512.spec
@@ -0,0 +1,335 @@
+# 4_01_02_AnnexL-R25_SPD_for_DDR4_SDRAM_Release_3_Sep2015.pdf
+#
+# JEDEC Standard No. 21-C
+# Page 4.1.2.12.3 – 1
+# Annex L: Serial Presence Detect (SPD) for DDR4 SDRAM Modules
+# DDR4 SPD Document Release 3
+# UDIMM Revision 1.1
+# RDIMM Revision 1.1
+# LRDIMM Revision 1.1
+# NVDIMM Revision 1.0
+
+{
+ # Byte 0: Number of Bytes Used / Number of Bytes in SPD Device /
+ # CRC Coverage
+ "SPD_Bytes_Used" : 4,
+ "SPD_Bytes_Total" : 3,
+ "CRC_Coverage" : 1,
+
+ # Byte 1: SPD Revision
+ "SPD_Revision" : 8,
+
+ # Byte 2: Key Byte / DRAM Device Type
+ "DRAM_Device_Type" : 8,
+
+ # Byte 3: Key Byte / Module Type
+ "Base_Module_Type" : 4,
+ "Hybrid_Media" : 3,
+ "Is_Hybrid" : 1,
+
+ # Byte 4: SDRAM Density and Banks
+ "SDRAM_Capacity" : 4,
+ "Bank_Address_Bits" : 2,
+ "Bank_Group_Bits" : 2,
+
+ # Byte 5: SDRAM Addressing
+ "Column_Address_Bits" : 3,
+ "Row_Address_Bits" : 3,
+ "Byte_5_reserved" : 2,
+
+ # Byte 6: SDRAM Package Type
+ "Signal_Loading" : 2,
+ "Byte_6_reserved" : 2,
+ "Die_Count" : 3,
+ "SDRAM_Package_Type" : 1,
+
+ # Byte 7: SDRAM Optional Features
+ "Maximum_Activate_Count" : 4,
+ "Maximum_Activate_Window" : 2,
+ "Byte_7_reserved" : 2,
+
+ # Byte 8: SDRAM Thermal and Refresh Options
+ "Byte_8_reserved" : 8,
+
+ # Byte 9: Other SDRAM Optional Features
+ "Byte_9_reserved" : 5,
+ "Soft_PPR" : 1,
+ "Post_Package_Repair" : 2,
+
+ # Byte 10: Secondary SDRAM Package Type
+ "Secondary_Signal_Loading" : 2,
+ "Secondary_DRAM_Densityt_Ratio" : 2,
+ "Secondary_Die_Count" : 3,
+ "Secondary_SDRAM_Package_Type" : 1,
+
+ # Byte 11: Module Nominal Voltage, VDD
+ "DRAM_VDD_1_2_V" : 2,
+ "Byte_11_reserved" : 6,
+
+ # Byte 12: Module Organization
+ "SDRAM_Device_Width" : 3,
+ "Number_of_Package_Ranks_per_DIMM" : 3,
+ "Rank_Mix" : 1,
+ "Byte_12_reserved" : 1,
+
+ # Byte 13: Module Memory Bus Width
+ "Primary_bus_width_in_bits" : 3,
+ "Bus_width_extension_in_bits" : 2,
+ "Byte_13_reserved" : 3,
+
+ # Byte 14: Module Thermal Sensor
+ "Byte_14_reserved" : 7,
+ "Thermal_Sensor" : 1,
+
+ # Byte 15: Extended Module Type
+ "Extended_Base_Module_Type" : 4,
+ "Byte_15_reserved" : 4,
+
+ # Byte 16: Reserved
+ "Byte_16_reserved" : 8,
+
+ # Byte 17: Timebases
+ "Fine_Timebase" : 2,
+ "Medium_Timebase" : 2,
+ "Byte_17_reserved" : 4,
+
+ # Byte 18: SDRAM Minimum Cycle Time (tCKAVGmin)
+ "tCKAVGmin" : 8,
+
+ # Byte 19: SDRAM Maximum Cycle Time (tCKAVGmax)
+ "tCKAVGmax" : 8,
+
+ # Bytes 20 - 23: CAS Latencies Supported
+ "CL_7_Supported" : 1,
+ "CL_8_Supported" : 1,
+ "CL_9_Supported" : 1,
+ "CL_10_Supported" : 1,
+ "CL_11_Supported" : 1,
+ "CL_12_Supported" : 1,
+ "CL_13_Supported" : 1,
+ "CL_14_Supported" : 1,
+
+ "CL_15_Supported" : 1,
+ "CL_16_Supported" : 1,
+ "CL_17_Supported" : 1,
+ "CL_18_Supported" : 1,
+ "CL_19_Supported" : 1,
+ "CL_20_Supported" : 1,
+ "CL_21_Supported" : 1,
+ "CL_22_Supported" : 1,
+
+ "CL_23_Supported" : 1,
+ "CL_24_Supported" : 1,
+ "CL_25_Supported" : 1,
+ "CL_26_Supported" : 1,
+ "CL_27_Supported" : 1,
+ "CL_28_Supported" : 1,
+ "CL_29_Supported" : 1,
+ "CL_30_Supported" : 1,
+
+ "CL_31_Supported" : 1,
+ "CL_32_Supported" : 1,
+ "CL_33_Supported" : 1,
+ "CL_34_Supported" : 1,
+ "CL_35_Supported" : 1,
+ "CL_36_Supported" : 1,
+ "Byte_23_reserved" : 1,
+ "CL_range" : 1,
+
+ # Byte 24: Minimum CAS Latency Time (tAAmin)
+ "tAAmin" : 8,
+
+ # Byte 25: Minimum RAS to CAS Delay Time (tRCDmin)
+ "tRCDmin" : 8,
+
+ # Byte 26: Minimum Row Precharge Delay Time (tRPmin)
+ "tRPmin" : 8,
+
+ # Bytes 27 - 29: Minimum Active to Precharge Delay Time (tRASmin)
+ # / Minimum Active to Active/Refresh Delay Time
+ # (tRCmin)
+ "tRASmin_MSN" : 4,
+ "tRCmin_MSN" : 4,
+ "tRASmin_LSB" : 8,
+ "tRCmin_LSB" : 8,
+
+ # Bytes 30 - 31: Minimum Refresh Recovery Delay Time (tRFC1min)
+ "tRFC1min_LSB" : 8,
+ "tRFC1min_MSB" : 8,
+
+ # Bytes 32 - 33: Minimum Refresh Recovery Delay Time (tRFC2min)
+ "tRFC2min_LSB" : 8,
+ "tRFC2min_MSB" : 8,
+
+ # Bytes 34 - 35: Minimum Refresh Recovery Delay Time (tRFC4min)
+ "tRFC4min_LSB" : 8,
+ "tRFC4min_MSB" : 8,
+
+ # Byte 36 - 37: Minimum Four Activate Window Delay Time
+ # (tFAWmin)
+ "tFAWmin_MSN" : 4,
+ "Byte_36_reserved" : 4,
+ "tFAWmin_LSB" : 8,
+
+ # Bytes 38: Minimum Activate to Activate Delay Time (tRRD_Smin),
+ # different bank group
+ "tRRD_Smin" : 8,
+
+ # Byte 39: Minimum Activate to Activate Delay Time (tRRD_Lmin),
+ # same bank group
+ "tRRD_Lmin" : 8,
+
+ # Byte 40: Minimum CAS to CAS Delay Time (tCCD_Lmin), same bank
+ # group
+ "tCCD_Lmin" : 8,
+
+ # Byte 41 - 42: Minimum Write Recovery Time (tWRmin)
+ "tWRmin_MSN" : 4,
+ "Byte_41_reserved" : 4,
+ "tWRmin_MSB" : 8,
+
+ # Byte 43-45: Minimum Write to Read Time (tWTR_Smin),
+ # different bank group / Minimum Write to Read Time
+ # (tWTR_Lmin), same bank group
+ "tWTR_Smin_MSN" : 4,
+ "tWTR_Lmin_MSN" : 4,
+ "tWTR_Smin_LSB" : 8,
+ "tWTR_Lmin_LSB" : 8,
+
+ # Byte 46~59: Reserved, Base Configuration Section
+ "Byte_46_59_reserved" [14] : 8,
+
+ # Byte 60: Connector to SDRAM Bit Mapping (DQ0-3)
+ "DQ0_3" : 8,
+ # Byte 61: Connector to SDRAM Bit Mapping (DQ4-7)
+ "DQ4_7" : 8,
+
+ # Byte 62: Connector to SDRAM Bit Mapping (DQ8-11)
+ "DQ8_11" : 8,
+
+ # Byte 63: Connector to SDRAM Bit Mapping (DQ12-15)
+ "DQ12_15" : 8,
+
+ # Byte 64: Connector to SDRAM Bit Mapping (DQ16-19)
+ "DQ16_19" : 8,
+
+ # Byte 65: Connector to SDRAM Bit Mapping (DQ20-23)
+ "DQ20_23" : 8,
+
+ # Byte 66: Connector to SDRAM Bit Mapping (DQ24-27)
+ "DQ24_27" : 8,
+
+ # Byte 67: Connector to SDRAM Bit Mapping (DQ28-31)
+ "DQ28_31" : 8,
+
+ # Byte 68: Connector to SDRAM Bit Mapping (CB0-3)
+ "CB0_3" : 8,
+
+ # Byte 69: Connector to SDRAM Bit Mapping (CB4-7)
+ "CB4_7" : 8,
+
+ # Byte 70: Connector to SDRAM Bit Mapping (DQ32-35)
+ "DQ32_35" : 8,
+
+ # Byte 71: Connector to SDRAM Bit Mapping (DQ36-39)
+ "DQ36_39" : 8,
+
+ # Byte 72: Connector to SDRAM Bit Mapping (DQ40-43)
+ "DQ40_43" : 8,
+
+ # Byte 73: Connector to SDRAM Bit Mapping (DQ44-47)
+ "DQ44_47" : 8,
+
+ # Byte 74: Connector to SDRAM Bit Mapping (DQ48-51)
+ "DQ48_51" : 8,
+
+ # Byte 75: Connector to SDRAM Bit Mapping (DQ52-55)
+ "DQ52_55" : 8,
+
+ # Byte 76: Connector to SDRAM Bit Mapping (DQ56-59)
+ "DQ56_59" : 8,
+
+ # Byte 77: Connector to SDRAM Bit Mapping (DQ60-63)
+ "DQ60_63" : 8,
+
+ # Bytes 78~116: Reserved, Base Configuration Section
+ # Must be coded as 0x00
+ "Byte_78_116_reserved" [39] : 8,
+
+ # Byte 117: Fine Offset for Minimum CAS to CAS Delay Time
+ # (tCCD_Lmin), same bank group
+ "tCCD_Lmin_Fine_Offset" : 8,
+
+ # Byte 118: Fine Offset for Minimum Activate to Activate Delay
+ # Time (tRRD_Lmin), same bank group
+ "tRRD_Lmin_Fine_Offset" : 8,
+
+ # Byte 119: Fine Offset for Minimum Activate to Activate Delay
+ # Time (tRRD_Smin), different bank group
+ "tRRD_Smin_Fine_Offset" : 8,
+
+ # Byte 120: Fine Offset for Minimum Active to Active/Refresh
+ # Delay Time (tRCmin)
+ "tRCmin_Fine_Offset" : 8,
+
+ # Byte 121: Fine Offset for Minimum Row Precharge Delay
+ # Time (tRPmin)
+ "tRPmin_Fine_Offset" : 8,
+
+ # Byte 122: Fine Offset for Minimum RAS to CAS Delay
+ # Time (tRCDmin)
+ "tRCDmin_Fine_Offset" : 8,
+
+ # Byte 123: Fine Offset for Minimum CAS Latency Time (tAAmin)
+ "tAAmin_Fine_Offset" : 8,
+
+ # Byte 124: Fine Offset for SDRAM Maximum Cycle Time
+ # (tCKAVGmax)
+ "tCKAVGmax_Fine_Offset" : 8,
+
+ # Byte 125: Fine Offset for SDRAM Minimum Cycle Time
+ # (tCKAVGmin)
+ "tCKAVGmin_Fine_Offset" : 8,
+
+ # Byte 126 - 127: Cyclical Redundancy Code (CRC) for
+ # Base Configuration Section
+ "CRC_Base_Configuration" : 16,
+
+# Standard Module Parameters - Overlay Bytes 128~191
+# Module Specific Bytes for Unbuffered Memory Module Types
+
+ # Byte 128: Raw Card Extension, Module Nominal Height
+ "Module_Nominal_Height_Max" : 5,
+ "Raw_Card_Extension" : 3,
+
+ # Byte 129: Module Maximum Thickness
+ "Module_Maximum_Thickness_Front" : 4,
+ "Module_Maximum_Thickness_Back" : 4,
+
+ # Byte 130: Reference Raw Card Used
+ "Reference_Raw_Card" : 5,
+ "Reference_Raw_Card_Revision" : 2,
+ "Reference_Raw_Card_Extension" : 1,
+
+ # Byte 131: Address Mapping from Edge Connector to DRAM
+ "Rank_1_Mapping" : 1,
+ "Byte_131_reserved" : 7,
+
+ # Byte 132 - 191: Reserved
+ "Byte_132_191_reserved" [60] : 8,
+
+# Unused
+ # Byte 192 - 253: Unused
+ "Byte_192_255_unused" [62] : 8,
+
+ # Byte 254 - 255: CRC for SPD Block 1
+ "CRC_SPD_Block_1" : 16,
+
+# Reserved
+ # Byte 256 - 319: Reserved
+ "Byte_256_319_reserved" [64] : 8,
+
+# End User Programmable
+ # Byte 384 - 511
+ "End_User_Programmable" [128] : 8
+}
diff --git a/util/scripts/decode_spd.sh b/util/scripts/decode_spd.sh
new file mode 100755
index 0000000000..9ab9fa30cf
--- /dev/null
+++ b/util/scripts/decode_spd.sh
@@ -0,0 +1,76 @@
+#!/bin/bash
+#
+# This file is part of the coreboot project.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+#
+# Parses spd hex files and outputs the contents in various formats
+#
+#
+# Outputs csv, set, and json in same folder as SPD_HEX_FILE
+#
+# Example:
+# decode_spd.sh ../../src/mainboard/google/zork/spd/micron-MT40A512M16TB-062E-J.spd.hex
+#
+# Outputs ../../src/mainboard/google/zork/spd/micron-MT40A512M16TB-062E-J.spd.{json|csv|set}
+#
+# TODO: This script assumes bincfg binary is at ../bincfg/bincfg (which is the
+# result of running the bincfg make), and the specs are at
+# ../bincfg/*.spec. This dependency should be made more resilliant and
+# configurable.
+
+set -e
+
+function read8 () {
+ echo $(( 16#$(xxd -s "${2}" -l 1 -p "${1}") ))
+}
+
+for file in "$@"
+do
+ bintmp=$(mktemp)
+ outfile="${file%.hex}.set"
+
+ echo "Decoding ${file}, outputting to ${outfile}"
+
+ grep -v '^#' "${file}" | xxd -r -p - "${bintmp}"
+ dram_type=$(read8 "${bintmp}" 2)
+ if [ ! "${dram_type}" -eq 12 ]
+ then
+ #TODO: Handle other dram types
+ printf "Error: Expecting dram4 (12), got %d\n" "${dram_type}"
+ continue
+ fi
+
+ revision=$(read8 "${bintmp}" 1)
+ if [ ! "${revision}" -eq $((0x13)) ]
+ then
+ printf "Warning: Expecting revision 0x13, got 0x%x.\n" "${revision}"
+ fi
+
+ module_type=$(read8 "${bintmp}" 3)
+ case "${module_type}" in
+ 1) # RDIMM
+ spec="../bincfg/ddr4_registered_spd_512.spec"
+ ;;
+ 2 | 3) #UDIMM | SO-DIMM
+ spec="../bincfg/ddr4_unbuffered_spd_512.spec"
+ ;;
+ * )
+ printf "Error: Unhandled module type %d.\n" "${module_type}"
+ ;;
+ esac
+
+ ../bincfg/bincfg -d "${spec}" "${bintmp}" "${outfile}"
+ grep -v '^#' "${outfile}" | sed -e 's/ = \([^,]\+\)/: "\1"/g' \
+ > "${file%.hex}.json"
+ grep -v -e '^#' -e '^{' -e '^}' "${outfile}" | sed -e 's/=/,/g' \
+ > "${file%.hex}.csv"
+done
diff --git a/util/scripts/description.md b/util/scripts/description.md
index 1f4e7df042..a08771d48d 100644
--- a/util/scripts/description.md
+++ b/util/scripts/description.md
@@ -3,6 +3,8 @@ __scripts__
line `Bash`
* _cross-repo-cherrypick_ - Pull in patches from another tree from a
gerrit repository. `Shell`
+ * _decode_spd.sh_ - Decodes Serial Presence Detect (SPD) files into
+ various human readable formats.
* _dts-to-fmd.sh_ -Converts a depthcharge fmap.dts into an fmaptool
compatible .fmd format `Bash`
* _find-unused-kconfig-symbols.sh_ - Points out Kconfig variables
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 00:15:29 +0000