9-16
MPC860 PowerQUICC UserÕs Manual
MOTOROLA
Part II. PowerPC Microprocessor Module
9.8.1 IMMU Control Register (MI_CTR)
The IMMU control register (MI_CTR), shown in Figure 9-6, controls IMMU operation.
Table 9-6 describes MI_CTR Þelds.
Figure 9-6. IMMU Control Register (MI_CTR)
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field
GPM PPM CIDEF
Ñ
RSV4I
Ñ
PPCS
Ñ
Reset
0
R/W
R/W
Bit
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Field
Ñ
ITLB_INDX
Ñ
Reset
0
R/W
R/W
SPR
784
Table 9-6. MI_CTR Field Descriptions
Bits
Name
Description
0
GPM
Group protection mode
0 PowerPC mode
1 Domain manager mode
1
PPM
Page protection mode. Valid regardless of whether translation is enabled. If translation is
enabled, PPM determines how M
x
_RPN is interpreted. See Table 9-11 and Table 9-12.
0 Page resolution of protection
1 1-Kbyte resolution of protection for 4-Kbyte pages
2
CIDEF
Default value for instruction cache-inhibit attribute when the IMMU is disabled (MSR[IR] = 0)
3
Ñ
Reserved. Ignored on write. Returns 0 on read.
4
RSV4I
Reserve 4 ITLB entries. See Section 9.10.2, ÒLocking TLB Entries.Ó
0 ITLB_INDX decremented modulo 32
1 ITLB_INDX decremented modulo 28
5
Ñ
Reserved. Ignored on write. Returns 0 on read.
6
PPCS
Privilege/user state compare mode
0 Ignore user/supervisor state during address compare
1 Account for user/supervisor state according to MI_RPN[24Ð27]
7Ð18
Ñ
Reserved. Ignored on write. Returns 0 on read.
19Ð23 ITLB_INDX
ITLB index. Points to the ITLB entry to be loaded. Decremented every ITLB update
24Ð31 Ñ
Reserved. Ignored on write. Returns 0 on read.
Summary of Contents for MPC860 PowerQUICC
Page 3: ...MPC860UM AD 07 98 REV 1 MPC860 PowerQUICC ª UserÕs Manual ...
Page 36: ...xxxvi MPC860 PowerQUICC UserÕs Manual MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 78: ...I iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 88: ...1 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 114: ...3 16 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 226: ...8 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 262: ...9 36 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 274: ...III iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 320: ...12 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 325: ...MOTOROLA Part IV Hardware Interface IV v Part IV Hardware Interface ...
Page 326: ...IV vi MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 352: ...13 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 394: ...14 42 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 426: ...15 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 530: ...17 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 632: ...21 44 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 660: ...22 28 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 708: ...24 24 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 748: ...27 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 846: ...31 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 914: ...35 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 948: ...36 34 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 998: ...37 48 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part VI Debug and Test ...
Page 1016: ...A 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1024: ...B 8 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1030: ...C 6 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1086: ...Glossary 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA ...
Page 1106: ......