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1 | # |
1 | # |
2 | # Copyright (c) 2006 Martin Decky |
2 | # Copyright (c) 2006 Martin Decky |
3 | # All rights reserved. |
3 | # All rights reserved. |
4 | # |
4 | # |
5 | # Redistribution and use in source and binary forms, with or without |
5 | # Redistribution and use in source and binary forms, with or without |
6 | # modification, are permitted provided that the following conditions |
6 | # modification, are permitted provided that the following conditions |
7 | # are met: |
7 | # are met: |
8 | # |
8 | # |
9 | # - Redistributions of source code must retain the above copyright |
9 | # - Redistributions of source code must retain the above copyright |
10 | # notice, this list of conditions and the following disclaimer. |
10 | # notice, this list of conditions and the following disclaimer. |
11 | # - Redistributions in binary form must reproduce the above copyright |
11 | # - Redistributions in binary form must reproduce the above copyright |
12 | # notice, this list of conditions and the following disclaimer in the |
12 | # notice, this list of conditions and the following disclaimer in the |
13 | # documentation and/or other materials provided with the distribution. |
13 | # documentation and/or other materials provided with the distribution. |
14 | # - The name of the author may not be used to endorse or promote products |
14 | # - The name of the author may not be used to endorse or promote products |
15 | # derived from this software without specific prior written permission. |
15 | # derived from this software without specific prior written permission. |
16 | # |
16 | # |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # |
27 | # |
28 | 28 | ||
29 | #include "asm.h" |
29 | #include "asm.h" |
30 | #include "regname.h" |
30 | #include "regname.h" |
31 | 31 | ||
32 | .macro FLUSH_CACHE addr |
32 | .macro SMC_COHERENCY addr |
33 | dcbst 0, \addr |
33 | dcbst 0, \addr |
34 | sync |
34 | sync |
35 | icbi 0, \addr |
35 | icbi 0, \addr |
- | 36 | sync |
|
36 | isync |
37 | isync |
37 | .endm |
38 | .endm |
38 | 39 | ||
- | 40 | .macro FLUSH_DCACHE addr |
|
- | 41 | dcbst 0, \addr |
|
- | 42 | sync |
|
- | 43 | isync |
|
- | 44 | .endm |
|
- | 45 | ||
- | 46 | .macro TLB_FLUSH reg |
|
- | 47 | tlbie \reg |
|
- | 48 | addi \reg, \reg, 0x1000 |
|
- | 49 | .endm |
|
- | 50 | ||
39 | .text |
51 | .text |
40 | 52 | ||
41 | .global halt |
53 | .global halt |
42 | .global memcpy |
54 | .global memcpy |
43 | .global jump_to_kernel |
55 | .global jump_to_kernel |
44 | 56 | ||
45 | halt: |
57 | halt: |
46 | b halt |
58 | b halt |
47 | 59 | ||
48 | memcpy: |
60 | memcpy: |
49 | srwi. r7, r5, 3 |
61 | srwi. r7, r5, 3 |
50 | addi r6, r3, -4 |
62 | addi r6, r3, -4 |
51 | addi r4, r4, -4 |
63 | addi r4, r4, -4 |
52 | beq 2f |
64 | beq 2f |
53 | 65 | ||
54 | andi. r0, r6, 3 |
66 | andi. r0, r6, 3 |
55 | mtctr r7 |
67 | mtctr r7 |
56 | bne 5f |
68 | bne 5f |
57 | 69 | ||
58 | 1: |
70 | 1: |
59 | 71 | ||
60 | lwz r7, 4(r4) |
72 | lwz r7, 4(r4) |
61 | lwzu r8, 8(r4) |
73 | lwzu r8, 8(r4) |
62 | stw r7, 4(r6) |
74 | stw r7, 4(r6) |
63 | stwu r8, 8(r6) |
75 | stwu r8, 8(r6) |
64 | bdnz 1b |
76 | bdnz 1b |
65 | 77 | ||
66 | andi. r5, r5, 7 |
78 | andi. r5, r5, 7 |
67 | 79 | ||
68 | 2: |
80 | 2: |
69 | 81 | ||
70 | cmplwi 0, r5, 4 |
82 | cmplwi 0, r5, 4 |
71 | blt 3f |
83 | blt 3f |
72 | 84 | ||
73 | lwzu r0, 4(r4) |
85 | lwzu r0, 4(r4) |
74 | addi r5, r5, -4 |
86 | addi r5, r5, -4 |
75 | stwu r0, 4(r6) |
87 | stwu r0, 4(r6) |
76 | 88 | ||
77 | 3: |
89 | 3: |
78 | 90 | ||
79 | cmpwi 0, r5, 0 |
91 | cmpwi 0, r5, 0 |
80 | beqlr |
92 | beqlr |
81 | mtctr r5 |
93 | mtctr r5 |
82 | addi r4, r4, 3 |
94 | addi r4, r4, 3 |
83 | addi r6, r6, 3 |
95 | addi r6, r6, 3 |
84 | 96 | ||
85 | 4: |
97 | 4: |
86 | 98 | ||
87 | lbzu r0, 1(r4) |
99 | lbzu r0, 1(r4) |
88 | stbu r0, 1(r6) |
100 | stbu r0, 1(r6) |
89 | bdnz 4b |
101 | bdnz 4b |
90 | blr |
102 | blr |
91 | 103 | ||
92 | 5: |
104 | 5: |
93 | 105 | ||
94 | subfic r0, r0, 4 |
106 | subfic r0, r0, 4 |
95 | mtctr r0 |
107 | mtctr r0 |
96 | 108 | ||
97 | 6: |
109 | 6: |
98 | 110 | ||
99 | lbz r7, 4(r4) |
111 | lbz r7, 4(r4) |
100 | addi r4, r4, 1 |
112 | addi r4, r4, 1 |
101 | stb r7, 4(r6) |
113 | stb r7, 4(r6) |
102 | addi r6, r6, 1 |
114 | addi r6, r6, 1 |
103 | bdnz 6b |
115 | bdnz 6b |
104 | subf r5, r0, r5 |
116 | subf r5, r0, r5 |
105 | rlwinm. r7, r5, 32-3, 3, 31 |
117 | rlwinm. r7, r5, 32-3, 3, 31 |
106 | beq 2b |
118 | beq 2b |
107 | mtctr r7 |
119 | mtctr r7 |
108 | b 1b |
120 | b 1b |
109 | 121 | ||
110 | 122 | ||
111 | jump_to_kernel: |
123 | jump_to_kernel: |
112 | 124 | ||
113 | # r3 = bootinfo (pa) |
125 | # r3 = bootinfo (pa) |
114 | # r4 = bootinfo_size |
126 | # r4 = bootinfo_size |
115 | # r5 = trans (pa) |
127 | # r5 = trans (pa) |
116 | # r6 = bytes to copy |
128 | # r6 = bytes to copy |
117 | # r7 = real_mode (pa) |
129 | # r7 = real_mode (pa) |
118 | # r8 = framebuffer (pa) |
130 | # r8 = framebuffer (pa) |
119 | # r9 = scanline |
131 | # r9 = scanline |
120 | 132 | ||
121 | # disable interrupts |
133 | # disable interrupts |
122 | 134 | ||
123 | mfmsr r31 |
135 | mfmsr r31 |
124 | rlwinm r31, r31, 0, 17, 15 |
136 | rlwinm r31, r31, 0, 17, 15 |
125 | mtmsr r31 |
137 | mtmsr r31 |
126 | 138 | ||
127 | # set real_mode meeting point address |
139 | # set real_mode meeting point address |
128 | 140 | ||
129 | mtspr srr0, r7 |
141 | mtspr srr0, r7 |
130 | 142 | ||
131 | # jumps to real_mode |
143 | # jumps to real_mode |
132 | 144 | ||
133 | mfmsr r31 |
145 | mfmsr r31 |
134 | lis r30, ~0@h |
146 | lis r30, ~0@h |
135 | ori r30, r30, ~(msr_ir | msr_dr | msr_ee)@l |
147 | ori r30, r30, ~(msr_ir | msr_dr | msr_ee)@l |
136 | and r31, r31, r30 |
148 | and r31, r31, r30 |
137 | mtspr srr1, r31 |
149 | mtspr srr1, r31 |
138 | 150 | ||
139 | sync |
151 | sync |
140 | isync |
152 | isync |
141 | rfi |
153 | rfi |
142 | 154 | ||
143 | .section REALMODE, "ax" |
155 | .section REALMODE, "ax" |
144 | .align PAGE_WIDTH |
156 | .align PAGE_WIDTH |
145 | .global real_mode |
157 | .global real_mode |
146 | 158 | ||
147 | real_mode: |
159 | real_mode: |
148 | 160 | ||
149 | # copy kernel to proper location |
161 | # copy kernel to proper location |
150 | # |
162 | # |
151 | # r5 = trans (pa) |
163 | # r5 = trans (pa) |
152 | # r6 = bytes to copy |
164 | # r6 = bytes to copy |
153 | # r8 = framebuffer (pa) |
165 | # r8 = framebuffer (pa) |
154 | # r9 = scanline |
166 | # r9 = scanline |
155 | 167 | ||
156 | li r31, PAGE_SIZE >> 2 |
168 | li r31, PAGE_SIZE >> 2 |
157 | li r30, 0 |
169 | li r30, 0 |
158 | 170 | ||
159 | page_copy: |
171 | page_copy: |
160 | 172 | ||
161 | cmpwi r6, 0 |
173 | cmpwi r6, 0 |
162 | beq copy_end |
174 | beq copy_end |
163 | 175 | ||
164 | # copy page |
176 | # copy page |
165 | 177 | ||
166 | mtctr r31 |
178 | mtctr r31 |
167 | lwz r29, 0(r5) |
179 | lwz r29, 0(r5) |
168 | 180 | ||
169 | copy_loop: |
181 | copy_loop: |
170 | 182 | ||
171 | lwz r28, 0(r29) |
183 | lwz r28, 0(r29) |
172 | stw r28, 0(r30) |
184 | stw r28, 0(r30) |
173 | 185 | ||
174 | FLUSH_CACHE r30 |
186 | SMC_COHERENCY r30 |
175 | 187 | ||
176 | addi r29, r29, 4 |
188 | addi r29, r29, 4 |
177 | addi r30, r30, 4 |
189 | addi r30, r30, 4 |
178 | subi r6, r6, 4 |
190 | subi r6, r6, 4 |
179 | 191 | ||
180 | cmpwi r6, 0 |
192 | cmpwi r6, 0 |
181 | beq copy_end |
193 | beq copy_end |
182 | 194 | ||
183 | bdnz copy_loop |
195 | bdnz copy_loop |
184 | 196 | ||
185 | addi r5, r5, 4 |
197 | addi r5, r5, 4 |
186 | b page_copy |
198 | b page_copy |
187 | 199 | ||
188 | copy_end: |
200 | copy_end: |
189 | 201 | ||
190 | # initially fill segment registers |
202 | # initially fill segment registers |
191 | 203 | ||
192 | li r31, 0 |
204 | li r31, 0 |
193 | 205 | ||
194 | li r29, 8 |
206 | li r29, 8 |
195 | mtctr r29 |
207 | mtctr r29 |
196 | li r30, 0 # ASID 0 (VSIDs 0 .. 7) |
208 | li r30, 0 # ASID 0 (VSIDs 0 .. 7) |
197 | 209 | ||
198 | seg_fill_uspace: |
210 | seg_fill_uspace: |
199 | 211 | ||
200 | mtsrin r30, r31 |
212 | mtsrin r30, r31 |
201 | addi r30, r30, 1 |
213 | addi r30, r30, 1 |
202 | addis r31, r31, 0x1000 # move to next SR |
214 | addis r31, r31, 0x1000 # move to next SR |
203 | 215 | ||
204 | bdnz seg_fill_uspace |
216 | bdnz seg_fill_uspace |
205 | 217 | ||
206 | li r29, 8 |
218 | li r29, 8 |
207 | mtctr r29 |
219 | mtctr r29 |
208 | lis r30, 0x4000 # priviledged access only |
220 | lis r30, 0x4000 # priviledged access only |
209 | ori r30, r30, 8 # ASID 0 (VSIDs 8 .. 15) |
221 | ori r30, r30, 8 # ASID 0 (VSIDs 8 .. 15) |
210 | 222 | ||
211 | seg_fill_kernel: |
223 | seg_fill_kernel: |
212 | 224 | ||
213 | mtsrin r30, r31 |
225 | mtsrin r30, r31 |
214 | addi r30, r30, 1 |
226 | addi r30, r30, 1 |
215 | addis r31, r31, 0x1000 # move to next SR |
227 | addis r31, r31, 0x1000 # move to next SR |
216 | 228 | ||
217 | bdnz seg_fill_kernel |
229 | bdnz seg_fill_kernel |
218 | 230 | ||
219 | # invalidate block address translation registers |
231 | # invalidate block address translation registers |
220 | 232 | ||
221 | li r30, 0 |
233 | li r30, 0 |
222 | 234 | ||
223 | mtspr ibat0u, r30 |
235 | mtspr ibat0u, r30 |
224 | mtspr ibat0l, r30 |
236 | mtspr ibat0l, r30 |
225 | 237 | ||
226 | mtspr ibat1u, r30 |
238 | mtspr ibat1u, r30 |
227 | mtspr ibat1l, r30 |
239 | mtspr ibat1l, r30 |
228 | 240 | ||
229 | mtspr ibat2u, r30 |
241 | mtspr ibat2u, r30 |
230 | mtspr ibat2l, r30 |
242 | mtspr ibat2l, r30 |
231 | 243 | ||
232 | mtspr ibat3u, r30 |
244 | mtspr ibat3u, r30 |
233 | mtspr ibat3l, r30 |
245 | mtspr ibat3l, r30 |
234 | 246 | ||
235 | mtspr dbat0u, r30 |
247 | mtspr dbat0u, r30 |
236 | mtspr dbat0l, r30 |
248 | mtspr dbat0l, r30 |
237 | 249 | ||
238 | mtspr dbat1u, r30 |
250 | mtspr dbat1u, r30 |
239 | mtspr dbat1l, r30 |
251 | mtspr dbat1l, r30 |
240 | 252 | ||
241 | mtspr dbat2u, r30 |
253 | mtspr dbat2u, r30 |
242 | mtspr dbat2l, r30 |
254 | mtspr dbat2l, r30 |
243 | 255 | ||
244 | mtspr dbat3u, r30 |
256 | mtspr dbat3u, r30 |
245 | mtspr dbat3l, r30 |
257 | mtspr dbat3l, r30 |
246 | 258 | ||
247 | # create empty Page Hash Table |
259 | # create empty Page Hash Table |
248 | # on top of memory, size 64 KB |
260 | # on top of memory, size 64 KB |
249 | 261 | ||
250 | lwz r31, 0(r3) # r31 = memory size |
262 | lwz r31, 0(r3) # r31 = memory size |
251 | 263 | ||
252 | lis r30, 65536@h |
264 | lis r30, 65536@h |
253 | ori r30, r30, 65536@l # r30 = 65536 |
265 | ori r30, r30, 65536@l # r30 = 65536 |
254 | 266 | ||
255 | subi r29, r30, 1 # r29 = 65535 |
267 | subi r29, r30, 1 # r29 = 65535 |
256 | 268 | ||
257 | sub r31, r31, r30 |
269 | sub r31, r31, r30 |
258 | andc r31, r31, r29 # pht = ALIGN_DOWN(memory_size - 65536, 65536) |
270 | andc r31, r31, r29 # pht = ALIGN_DOWN(memory_size - 65536, 65536) |
259 | 271 | ||
260 | mtsdr1 r31 |
272 | mtsdr1 r31 |
261 | 273 | ||
262 | li r29, 2 |
274 | li r29, 2 |
263 | srw r30, r30, r29 # r30 = 16384 |
275 | srw r30, r30, r29 # r30 = 16384 |
264 | li r29, 0 |
276 | li r29, 0 |
265 | 277 | ||
266 | pht_clear: |
278 | pht_clear: |
267 | 279 | ||
268 | # write zeroes |
280 | # write zeroes |
269 | 281 | ||
270 | stw r29, 0(r31) |
282 | stw r29, 0(r31) |
271 | FLUSH_CACHE r31 |
283 | FLUSH_DCACHE r31 |
272 | 284 | ||
273 | addi r31, r31, 4 |
285 | addi r31, r31, 4 |
274 | subi r30, r30, 4 |
286 | subi r30, r30, 4 |
275 | 287 | ||
276 | cmpwi r30, 0 |
288 | cmpwi r30, 0 |
277 | beq clear_end |
289 | beq clear_end |
278 | 290 | ||
279 | bdnz pht_clear |
291 | bdnz pht_clear |
280 | 292 | ||
281 | clear_end: |
293 | clear_end: |
282 | 294 | ||
283 | #ifdef CONFIG_BAT |
295 | #ifdef CONFIG_BAT |
284 | 296 | ||
285 | # create BAT identity mapping |
297 | # create BAT identity mapping |
286 | 298 | ||
287 | lwz r31, 0(r3) # r31 = memory size |
299 | lwz r31, 0(r3) # r31 = memory size |
288 | 300 | ||
289 | lis r29, 0x0002 |
301 | lis r29, 0x0002 |
290 | cmpw r31, r29 |
302 | cmpw r31, r29 |
291 | blt no_bat # less than 128 KB -> no BAT |
303 | blt no_bat # less than 128 KB -> no BAT |
292 | 304 | ||
293 | li r29, 18 |
305 | li r29, 18 |
294 | srw r31, r31, r29 # r31 = total >> 18 |
306 | srw r31, r31, r29 # r31 = total >> 18 |
295 | 307 | ||
296 | # create Block Length mask by replicating |
308 | # create Block Length mask by replicating |
297 | # the leading logical one 14 times |
309 | # the leading logical one 14 times |
298 | 310 | ||
299 | li r29, 14 |
311 | li r29, 14 |
300 | mtctr r31 |
312 | mtctr r31 |
301 | li r29, 1 |
313 | li r29, 1 |
302 | 314 | ||
303 | bat_mask: |
315 | bat_mask: |
304 | srw r30, r31, r29 # r30 = mask >> 1 |
316 | srw r30, r31, r29 # r30 = mask >> 1 |
305 | or r31, r31, r30 # mask = mask | r30 |
317 | or r31, r31, r30 # mask = mask | r30 |
306 | 318 | ||
307 | bdnz bat_mask |
319 | bdnz bat_mask |
308 | 320 | ||
309 | andi. r31, r31, 0x07ff # mask = mask & 0x07ff (BAT can map up to 256 MB) |
321 | andi. r31, r31, 0x07ff # mask = mask & 0x07ff (BAT can map up to 256 MB) |
310 | 322 | ||
311 | li r29, 2 |
323 | li r29, 2 |
312 | slw r31, r31, r29 # mask = mask << 2 |
324 | slw r31, r31, r29 # mask = mask << 2 |
313 | ori r31, r31, 0x0002 # mask = mask | 0x0002 (priviledged access only) |
325 | ori r31, r31, 0x0002 # mask = mask | 0x0002 (priviledged access only) |
314 | 326 | ||
315 | lis r29, 0x8000 |
327 | lis r29, 0x8000 |
316 | or r29, r29, r31 |
328 | or r29, r29, r31 |
317 | 329 | ||
318 | lis r30, 0x0000 |
330 | lis r30, 0x0000 |
319 | ori r30, r30, 0x0002 |
331 | ori r30, r30, 0x0002 |
320 | 332 | ||
321 | mtspr ibat0u, r29 |
333 | mtspr ibat0u, r29 |
322 | mtspr ibat0l, r30 |
334 | mtspr ibat0l, r30 |
323 | 335 | ||
324 | mtspr dbat0u, r29 |
336 | mtspr dbat0u, r29 |
325 | mtspr dbat0l, r30 |
337 | mtspr dbat0l, r30 |
326 | 338 | ||
327 | no_bat: |
339 | no_bat: |
328 | 340 | ||
329 | #endif |
341 | #endif |
330 | 342 | ||
- | 343 | # flush TLB |
|
- | 344 | ||
- | 345 | li r31, 0 |
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- | 346 | sync |
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- | 347 | ||
- | 348 | TLB_FLUSH r31 |
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- | 349 | TLB_FLUSH r31 |
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- | 350 | TLB_FLUSH r31 |
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- | 351 | TLB_FLUSH r31 |
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- | 352 | TLB_FLUSH r31 |
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- | 353 | TLB_FLUSH r31 |
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- | 354 | TLB_FLUSH r31 |
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- | 355 | TLB_FLUSH r31 |
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- | 356 | ||
- | 357 | TLB_FLUSH r31 |
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- | 358 | TLB_FLUSH r31 |
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- | 359 | TLB_FLUSH r31 |
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- | 360 | TLB_FLUSH r31 |
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- | 361 | TLB_FLUSH r31 |
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- | 362 | TLB_FLUSH r31 |
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- | 363 | TLB_FLUSH r31 |
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- | 364 | TLB_FLUSH r31 |
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- | 365 | ||
- | 366 | TLB_FLUSH r31 |
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- | 367 | TLB_FLUSH r31 |
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- | 368 | TLB_FLUSH r31 |
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- | 369 | TLB_FLUSH r31 |
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- | 370 | TLB_FLUSH r31 |
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- | 371 | TLB_FLUSH r31 |
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- | 372 | TLB_FLUSH r31 |
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- | 373 | TLB_FLUSH r31 |
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- | 374 | ||
- | 375 | TLB_FLUSH r31 |
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- | 376 | TLB_FLUSH r31 |
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- | 377 | TLB_FLUSH r31 |
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- | 378 | TLB_FLUSH r31 |
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- | 379 | TLB_FLUSH r31 |
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- | 380 | TLB_FLUSH r31 |
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- | 381 | TLB_FLUSH r31 |
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- | 382 | TLB_FLUSH r31 |
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- | 383 | ||
- | 384 | TLB_FLUSH r31 |
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- | 385 | TLB_FLUSH r31 |
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- | 386 | TLB_FLUSH r31 |
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- | 387 | TLB_FLUSH r31 |
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- | 388 | TLB_FLUSH r31 |
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- | 389 | TLB_FLUSH r31 |
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- | 390 | TLB_FLUSH r31 |
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- | 391 | TLB_FLUSH r31 |
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- | 392 | ||
- | 393 | TLB_FLUSH r31 |
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- | 394 | TLB_FLUSH r31 |
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- | 395 | TLB_FLUSH r31 |
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- | 396 | TLB_FLUSH r31 |
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- | 397 | TLB_FLUSH r31 |
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- | 398 | TLB_FLUSH r31 |
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- | 399 | TLB_FLUSH r31 |
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- | 400 | TLB_FLUSH r31 |
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- | 401 | ||
- | 402 | TLB_FLUSH r31 |
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- | 403 | TLB_FLUSH r31 |
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- | 404 | TLB_FLUSH r31 |
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- | 405 | TLB_FLUSH r31 |
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- | 406 | TLB_FLUSH r31 |
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- | 407 | TLB_FLUSH r31 |
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- | 408 | TLB_FLUSH r31 |
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- | 409 | TLB_FLUSH r31 |
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- | 410 | ||
- | 411 | TLB_FLUSH r31 |
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- | 412 | TLB_FLUSH r31 |
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- | 413 | TLB_FLUSH r31 |
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- | 414 | TLB_FLUSH r31 |
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- | 415 | TLB_FLUSH r31 |
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- | 416 | TLB_FLUSH r31 |
|
- | 417 | TLB_FLUSH r31 |
|
- | 418 | TLB_FLUSH r31 |
|
- | 419 | ||
- | 420 | eieio |
|
331 | tlbsync |
421 | tlbsync |
- | 422 | sync |
|
332 | 423 | ||
333 | # start the kernel |
424 | # start the kernel |
334 | # |
425 | # |
335 | # pc = KERNEL_START_ADDR |
426 | # pc = KERNEL_START_ADDR |
336 | # r3 = bootinfo (pa) |
427 | # r3 = bootinfo (pa) |
337 | # sprg0 = KA2PA(KERNEL_START_ADDR) |
428 | # sprg0 = KA2PA(KERNEL_START_ADDR) |
338 | # sprg3 = physical memory size |
429 | # sprg3 = physical memory size |
339 | # sp = 0 (pa) |
430 | # sp = 0 (pa) |
340 | 431 | ||
341 | lis r31, KERNEL_START_ADDR@ha |
432 | lis r31, KERNEL_START_ADDR@ha |
342 | addi r31, r31, KERNEL_START_ADDR@l |
433 | addi r31, r31, KERNEL_START_ADDR@l |
343 | 434 | ||
344 | mtspr srr0, r31 |
435 | mtspr srr0, r31 |
345 | 436 | ||
346 | subis r31, r31, 0x8000 |
437 | subis r31, r31, 0x8000 |
347 | mtsprg0 r31 |
438 | mtsprg0 r31 |
348 | 439 | ||
349 | lwz r31, 0(r3) |
440 | lwz r31, 0(r3) |
350 | mtsprg3 r31 |
441 | mtsprg3 r31 |
351 | 442 | ||
352 | li sp, 0 |
443 | li sp, 0 |
353 | 444 | ||
354 | mfmsr r31 |
445 | mfmsr r31 |
355 | ori r31, r31, (msr_ir | msr_dr)@l |
446 | ori r31, r31, (msr_ir | msr_dr)@l |
356 | mtspr srr1, r31 |
447 | mtspr srr1, r31 |
357 | 448 | ||
358 | sync |
449 | sync |
359 | isync |
450 | isync |
360 | rfi |
451 | rfi |
361 | 452 | ||
362 | .align PAGE_WIDTH |
453 | .align PAGE_WIDTH |
363 | .global trans |
454 | .global trans |
364 | trans: |
455 | trans: |
365 | .space (TRANS_SIZE * TRANS_ITEM_SIZE) |
456 | .space (TRANS_SIZE * TRANS_ITEM_SIZE) |
366 | 457 |