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2ef2b01e A |
1 | //------------------------------------------------------------------------------ |
2 | // | |
3 | // Copyright (c) 2008-2009 Apple Inc. All rights reserved. | |
4 | // | |
5 | // All rights reserved. This program and the accompanying materials | |
6 | // are licensed and made available under the terms and conditions of the BSD License | |
7 | // which accompanies this distribution. The full text of the license may be found at | |
8 | // http://opensource.org/licenses/bsd-license.php | |
9 | // | |
10 | // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | // | |
13 | //------------------------------------------------------------------------------ | |
14 | ||
15 | EXPORT ArmInvalidateInstructionCache | |
16 | EXPORT ArmInvalidateDataCacheEntryByMVA | |
17 | EXPORT ArmCleanDataCacheEntryByMVA | |
18 | EXPORT ArmCleanInvalidateDataCacheEntryByMVA | |
19 | EXPORT ArmInvalidateDataCacheEntryBySetWay | |
20 | EXPORT ArmCleanDataCacheEntryBySetWay | |
21 | EXPORT ArmCleanInvalidateDataCacheEntryBySetWay | |
22 | EXPORT ArmDrainWriteBuffer | |
23 | EXPORT ArmEnableMmu | |
24 | EXPORT ArmDisableMmu | |
c2b5ca8b | 25 | EXPORT ArmMmuEnabled |
2ef2b01e A |
26 | EXPORT ArmEnableDataCache |
27 | EXPORT ArmDisableDataCache | |
28 | EXPORT ArmEnableInstructionCache | |
29 | EXPORT ArmDisableInstructionCache | |
30 | EXPORT ArmEnableBranchPrediction | |
31 | EXPORT ArmDisableBranchPrediction | |
32 | ||
33 | DC_ON EQU ( 0x1:SHL:2 ) | |
34 | IC_ON EQU ( 0x1:SHL:12 ) | |
35 | XP_ON EQU ( 0x1:SHL:23 ) | |
36 | ||
37 | ||
38 | AREA ArmCacheLib, CODE, READONLY | |
39 | PRESERVE8 | |
40 | ||
41 | ||
42 | ArmInvalidateDataCacheEntryByMVA | |
1a27eb48 | 43 | DSB |
44 | ISB | |
2ef2b01e | 45 | MCR p15, 0, r0, c7, c6, 1 ; invalidate single data cache line |
1a27eb48 | 46 | DSB |
47 | ISB | |
2ef2b01e A |
48 | BX lr |
49 | ||
50 | ||
51 | ArmCleanDataCacheEntryByMVA | |
1a27eb48 | 52 | DSB |
53 | ISB | |
2ef2b01e | 54 | MCR p15, 0, r0, c7, c10, 1 ; clean single data cache line |
1a27eb48 | 55 | DSB |
56 | ISB | |
2ef2b01e A |
57 | BX lr |
58 | ||
59 | ||
60 | ArmCleanInvalidateDataCacheEntryByMVA | |
1a27eb48 | 61 | DSB |
62 | ISB | |
2ef2b01e | 63 | MCR p15, 0, r0, c7, c14, 1 ; clean and invalidate single data cache line |
1a27eb48 | 64 | DSB |
65 | ISB | |
2ef2b01e A |
66 | BX lr |
67 | ||
68 | ||
69 | ArmInvalidateDataCacheEntryBySetWay | |
1a27eb48 | 70 | DSB |
71 | ISB | |
2ef2b01e | 72 | mcr p15, 0, r0, c7, c6, 2 ; Invalidate this line |
1a27eb48 | 73 | DSB |
74 | ISB | |
2ef2b01e A |
75 | bx lr |
76 | ||
77 | ||
78 | ArmCleanInvalidateDataCacheEntryBySetWay | |
1a27eb48 | 79 | DSB |
80 | ISB | |
2ef2b01e | 81 | mcr p15, 0, r0, c7, c14, 2 ; Clean and Invalidate this line |
1a27eb48 | 82 | DSB |
83 | ISB | |
2ef2b01e A |
84 | bx lr |
85 | ||
86 | ||
87 | ArmCleanDataCacheEntryBySetWay | |
1a27eb48 | 88 | DSB |
89 | ISB | |
2ef2b01e | 90 | mcr p15, 0, r0, c7, c10, 2 ; Clean this line |
1a27eb48 | 91 | DSB |
92 | ISB | |
2ef2b01e A |
93 | bx lr |
94 | ||
95 | ||
96 | ArmDrainWriteBuffer | |
1a27eb48 | 97 | DSB |
98 | ISB | |
2ef2b01e | 99 | mcr p15, 0, r0, c7, c10, 4 ; Drain write buffer for sync |
1a27eb48 | 100 | DSB |
101 | ISB | |
2ef2b01e A |
102 | bx lr |
103 | ||
104 | ||
105 | ArmInvalidateInstructionCache | |
1a27eb48 | 106 | DSB |
107 | ISB | |
2ef2b01e A |
108 | MOV R0,#0 |
109 | MCR p15,0,R0,c7,c5,0 ;Invalidate entire instruction cache | |
110 | MOV R0,#0 | |
111 | MCR p15,0,R0,c7,c5,4 ;Instruction synchronization barrier | |
1a27eb48 | 112 | DSB |
113 | ISB | |
2ef2b01e A |
114 | BX LR |
115 | ||
116 | ArmEnableMmu | |
1a27eb48 | 117 | DSB |
118 | ISB | |
2ef2b01e A |
119 | mrc p15,0,R0,c1,c0,0 |
120 | orr R0,R0,#1 | |
121 | mcr p15,0,R0,c1,c0,0 | |
1a27eb48 | 122 | DSB |
123 | ISB | |
2ef2b01e A |
124 | bx LR |
125 | ||
c2b5ca8b | 126 | ArmMmuEnabled |
1a27eb48 | 127 | DSB |
128 | ISB | |
c2b5ca8b A |
129 | mrc p15,0,R0,c1,c0,0 |
130 | and R0,R0,#1 | |
1a27eb48 | 131 | DSB |
132 | ISB | |
c2b5ca8b A |
133 | bx LR |
134 | ||
2ef2b01e | 135 | ArmDisableMmu |
1a27eb48 | 136 | DSB |
137 | ISB | |
2ef2b01e A |
138 | mov R0,#0 |
139 | mcr p15,0,R0,c13,c0,0 ;FCSE PID register must be cleared before disabling MMU | |
140 | mrc p15,0,R0,c1,c0,0 | |
141 | bic R0,R0,#1 | |
142 | mcr p15,0,R0,c1,c0,0 ;Disable MMU | |
143 | mov R0,#0 | |
144 | mcr p15,0,R0,c7,c10,4 ;Data synchronization barrier | |
145 | mov R0,#0 | |
146 | mcr p15,0,R0,c7,c5,4 ;Instruction synchronization barrier | |
1a27eb48 | 147 | DSB |
148 | ISB | |
2ef2b01e A |
149 | bx LR |
150 | ||
151 | ArmEnableDataCache | |
1a27eb48 | 152 | DSB |
153 | ISB | |
2ef2b01e A |
154 | LDR R1,=DC_ON |
155 | MRC p15,0,R0,c1,c0,0 ;Read control register configuration data | |
156 | ORR R0,R0,R1 ;Set C bit | |
157 | MCR p15,0,r0,c1,c0,0 ;Write control register configuration data | |
1a27eb48 | 158 | DSB |
159 | ISB | |
2ef2b01e A |
160 | BX LR |
161 | ||
162 | ArmDisableDataCache | |
1a27eb48 | 163 | DSB |
164 | ISB | |
2ef2b01e A |
165 | LDR R1,=DC_ON |
166 | MRC p15,0,R0,c1,c0,0 ;Read control register configuration data | |
167 | BIC R0,R0,R1 ;Clear C bit | |
168 | MCR p15,0,r0,c1,c0,0 ;Write control register configuration data | |
1a27eb48 | 169 | DSB |
170 | ISB | |
2ef2b01e A |
171 | BX LR |
172 | ||
173 | ArmEnableInstructionCache | |
1a27eb48 | 174 | DSB |
175 | ISB | |
2ef2b01e A |
176 | LDR R1,=IC_ON |
177 | MRC p15,0,R0,c1,c0,0 ;Read control register configuration data | |
178 | ORR R0,R0,R1 ;Set I bit | |
179 | MCR p15,0,r0,c1,c0,0 ;Write control register configuration data | |
1a27eb48 | 180 | DSB |
181 | ISB | |
2ef2b01e A |
182 | BX LR |
183 | ||
184 | ArmDisableInstructionCache | |
1a27eb48 | 185 | DSB |
186 | ISB | |
2ef2b01e A |
187 | LDR R1,=IC_ON |
188 | MRC p15,0,R0,c1,c0,0 ;Read control register configuration data | |
189 | BIC R0,R0,R1 ;Clear I bit. | |
190 | MCR p15,0,r0,c1,c0,0 ;Write control register configuration data | |
1a27eb48 | 191 | DSB |
192 | ISB | |
2ef2b01e A |
193 | BX LR |
194 | ||
195 | ArmEnableBranchPrediction | |
1a27eb48 | 196 | DSB |
197 | ISB | |
2ef2b01e A |
198 | mrc p15, 0, r0, c1, c0, 0 |
199 | orr r0, r0, #0x00000800 | |
200 | mcr p15, 0, r0, c1, c0, 0 | |
1a27eb48 | 201 | DSB |
202 | ISB | |
2ef2b01e A |
203 | bx LR |
204 | ||
205 | ArmDisableBranchPrediction | |
1a27eb48 | 206 | DSB |
207 | ISB | |
2ef2b01e A |
208 | mrc p15, 0, r0, c1, c0, 0 |
209 | bic r0, r0, #0x00000800 | |
210 | mcr p15, 0, r0, c1, c0, 0 | |
1a27eb48 | 211 | DSB |
212 | ISB | |
2ef2b01e A |
213 | bx LR |
214 | ||
215 | END |