Intel C2350 FH8065401488914 Data Sheet
Product codes
FH8065401488914
Intel
®
Atom™ Processor C2000 Product Family for Microserver
September 2014
Datasheet, Vol. 1 of 3
Order Number: 330061-002US
55
Volume 2—Multi-Core Intel
®
Atom™ Processors—C2000 Product Family
CPUID Instruction and SoC Identification
The BIOS is able to determine the silicon stepping of the entire SoC. This is
accomplished by reading the 32-bit
register in
configuration space, bus 0, device 0, function 0, offset F8h. The SoC stepping is shown
in the 8-bit field, MANUFACTURING_ID_BIT_7_0.
shows the information
received when this register is read.
In addition to verifying the processor signature, the BIOS needs the platform ID to
properly target the microcode update. The platform ID is determined by reading bits
[52:50] of the IA32_PLATFORM_ID register, (MSR 17h). This is a 64-bit register and is
read using the RDMSR instruction. The three platform ID bits, when read as a Binary
Coded Decimal (BCD) number, indicate the bit position in the microcode update header
processor flags field that is associated with the installed processor.
§ §
Table 2-5.
SoC Stepping Information
Parameter
A0 SoC
A1 SoC
B0 SoC
Process
0.1
0.1
0.1
Manufacturing ID
0Fh
0Fh
0Fh
Manufacturing Stepping
0
1
2