00000000_00000000h, 00000187h – AMD Geode LX [email protected] User Manual
Page 114
114
AMD Geode™ LX Processors Data Book
CPU Core Register Descriptions
33234H
5.5.2.7
Performance Event Counter 0 Select MSR (PERF_SEL0_MSR
5.5.2.8
Performance Event Counter 1 Select MSR (PERF_SEL1_MSR)
MSR Address
00000186h
Type
R/W
Reset Value
00000000_00000000h
PERF_SEL0_MSR Register Map
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RSVD
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RSVD
PC_
E
N
RSVD
PC0_UMASK
PC0_EVENT
PERF_SEL0_MSR Bit Descriptions
Bit
Name
Description
63:23
RSVD
Reserved. Write as read.
22
PC_EN
Performance Event Counters 0 and 1 Enable.
0: Disable counters.
1: Enable counters.
21:16
RSVD
Reserved. Write as read.
15:8
PC0_UMASK
Performance Event Counter 0 Unit Mask. Selects sub-events.
00h: All sub-events counted.
7:0
PC0_EVENT
Performance Event Counter 0 Event Select Value. See individual module chapters for
performance event selections.
MSR Address
00000187h
Type
R/W
Reset Value
00000000_00000000h
PERF_SEL1_MSR Register Map
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
RSVD
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
RSVD
PC1_UMASK
PC1_EVENT
PERF_SEL1_MSR Bit Descriptions
Bit
Name
Description
63:16
RSVD
Reserved. Write as read.
15:8
PC1_UMASK
Performance Event Counter 1 Unit Mask. Selects sub-events.
00h: All sub-events counted.
7:0
PC1_EVENT
Performance Event Counter 1 Event Select Value. See individual module chapters for
performance event selections.