35-98 Vol. 3C
MODEL-SPECIFIC REGISTERS (MSRS)
14:13
Reserved.
15
Valid (R/W)
Indicates whether the values in bits 12:0 are valid and can be used
by the processor for package C-sate management.
63:16
Reserved.
60DH
1549
MSR_PKG_C2_RESIDENCY
Package
Note: C-state values are processor specific C-state code names,
unrelated to MWAIT extension C-state parameters or ACPI C-
States.
63:0
Package C2 Residency Counter. (R/O)
Value since last reset that this package is in processor-specific C2
states. Count at the same frequency as the TSC.
610H
1552
MSR_PKG_POWER_LIMIT
Package
PKG RAPL Power Limit Control (R/W)
See Section 14.9.3, “Package RAPL Domain.”
611H
1553
MSR_PKG_ENERGY_STATUS Package
PKG Energy Status (R/O)
See Section 14.9.3, “Package RAPL Domain.”
613H
1555
MSR_PKG_PERF_STATUS
Package
PKG Perf Status (R/O)
See Section 14.9.3, “Package RAPL Domain.”
614H
1556
MSR_PKG_POWER_INFO
Package
PKG RAPL Parameters (R/W)
14:0
Thermal Spec Power (R/W)
See Section 14.9.3, “Package RAPL Domain.”
15
Reserved.
30:16
Minimum Power (R/W)
See Section 14.9.3, “Package RAPL Domain.”
31
Reserved.
46:32
Maximum Power (R/W)
See Section 14.9.3, “Package RAPL Domain.”
47
Reserved.
54:48
Maximum Time Window (R/W)
Specified by 2^Y * (1.0 + Z/4.0) * Time_Unit, where “Y”
is the unsigned integer value represented. by bits
52:48, “Z” is an unsigned integer represented by bits
54:53. “Time_Unit” is specified by the “Time Units” field
of MSR_RAPL_POWER_UNIT
63:55
Reserved.
618H
1560
MSR_DRAM_POWER_LIMIT
Package
DRAM RAPL Power Limit Control (R/W)
See Section 14.9.5, “DRAM RAPL Domain.”
619H
1561
MSR_DRAM_ENERGY_
STATUS
Package
DRAM Energy Status (R/O)
See Section 14.9.5, “DRAM RAPL Domain.”
61BH
1563
MSR_DRAM_PERF_STATUS Package
DRAM Performance Throttling Status (R/O) See Section 14.9.5,
61CH
1564
MSR_DRAM_POWER_INFO
Package
DRAM RAPL Parameters (R/W)
See Section 14.9.5, “DRAM RAPL Domain.”
Table 35-12. MSRs in Next Generation Intel Atom Processors Based on the Goldmont Microarchitecture (Contd.)
Address
Register Name
Scope
Bit Description
Hex
Dec