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103 | /* |
103 | /* |
104 | * We have copied code and now we need to guarantee cache coherence. |
104 | * We have copied code and now we need to guarantee cache coherence. |
105 | * 1. Make sure that the code we have moved has drained to main memory. |
105 | * 1. Make sure that the code we have moved has drained to main memory. |
106 | * 2. Invalidate I-cache. |
106 | * 2. Invalidate I-cache. |
107 | * 3. Flush instruction pipeline. |
107 | * 3. Flush instruction pipeline. |
108 | */ |
108 | */ |
- | 109 | ||
- | 110 | /* |
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- | 111 | * US3 processors have a write-invalidate cache, so explicitly |
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- | 112 | * invalidating it is not required. Whether to invalidate I-cache |
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- | 113 | * or not is decided according to the value of the global |
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- | 114 | * "subarchitecture" variable (set in the bootstrap). |
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- | 115 | */ |
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- | 116 | set subarchitecture, %g2 |
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- | 117 | ldub [%g2], %g2 |
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- | 118 | cmp %g2, 3 |
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- | 119 | be 1f |
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- | 120 | nop |
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- | 121 | 0: |
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109 | call icache_flush |
122 | call icache_flush |
- | 123 | nop |
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- | 124 | 1: |
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110 | membar #StoreStore |
125 | membar #StoreStore |
- | 126 | ||
- | 127 | /* |
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- | 128 | * Flush the instruction pipeline. |
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- | 129 | */ |
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111 | flush %i7 |
130 | flush %i7 |
112 | 131 | ||
113 | mov %o0, %l1 |
132 | mov %o0, %l1 |
114 | mov %o1, %o0 |
133 | mov %o1, %o0 |
115 | mov %o2, %o1 |
134 | mov %o2, %o1 |
Line 132... | Line 151... | ||
132 | stxa %g0, [%g1] ASI_ICACHE_TAG |
151 | stxa %g0, [%g1] ASI_ICACHE_TAG |
133 | membar #Sync |
152 | membar #Sync |
134 | retl |
153 | retl |
135 | ! SF Erratum #51 |
154 | ! SF Erratum #51 |
136 | nop |
155 | nop |
137 | - | ||
138 | .global ofw |
156 | .global ofw |
139 | ofw: |
157 | ofw: |
140 | save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
158 | save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
141 | set ofw_cif, %l0 |
159 | set ofw_cif, %l0 |
142 | ldx [%l0], %l0 |
160 | ldx [%l0], %l0 |