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1 | jermar | 1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | #include <cpu.h> |
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15 | jermar | 30 | #include <arch.h> |
1 | jermar | 31 | #include <arch/cpu.h> |
32 | #include <mm/heap.h> |
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33 | #include <mm/page.h> |
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34 | #include <mm/frame.h> |
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35 | #include <arch/types.h> |
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36 | #include <config.h> |
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37 | #include <panic.h> |
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38 | #include <typedefs.h> |
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39 | #include <memstr.h> |
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40 | #include <list.h> |
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41 | |||
42 | cpu_t *cpus; |
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43 | |||
108 | decky | 44 | /** Initialize CPUs |
45 | * |
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46 | * Initialize kernel CPUs support. |
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47 | * |
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48 | */ |
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1 | jermar | 49 | void cpu_init(void) { |
50 | int i, j; |
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51 | |||
458 | decky | 52 | #ifdef CONFIG_SMP |
1 | jermar | 53 | if (config.cpu_active == 1) { |
458 | decky | 54 | #endif /* CONFIG_SMP */ |
1 | jermar | 55 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count); |
56 | if (!cpus) |
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57 | panic("malloc/cpus"); |
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58 | |||
59 | /* initialize everything */ |
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60 | memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0); |
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125 | jermar | 61 | |
1 | jermar | 62 | for (i=0; i < config.cpu_count; i++) { |
192 | jermar | 63 | cpus[i].stack = (__u8 *) frame_alloc(FRAME_KA | FRAME_PANIC); |
1 | jermar | 64 | if (!cpus[i].stack) |
65 | panic("malloc/cpus[%d].stack\n", i); |
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66 | |||
67 | cpus[i].id = i; |
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68 | |||
458 | decky | 69 | #ifdef CONFIG_SMP |
1 | jermar | 70 | waitq_initialize(&cpus[i].kcpulb_wq); |
71 | #endif /* __SMP */ |
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72 | |||
73 | for (j = 0; j < RQ_COUNT; j++) { |
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74 | list_initialize(&cpus[i].rq[j].rq_head); |
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75 | } |
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76 | } |
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77 | |||
458 | decky | 78 | #ifdef CONFIG_SMP |
1 | jermar | 79 | } |
458 | decky | 80 | #endif /* CONFIG_SMP */ |
192 | jermar | 81 | |
82 | CPU = &cpus[config.cpu_active-1]; |
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1 | jermar | 83 | |
28 | jermar | 84 | CPU->active = 1; |
31 | jermar | 85 | CPU->tlb_active = 1; |
28 | jermar | 86 | |
1 | jermar | 87 | cpu_identify(); |
88 | cpu_arch_init(); |
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89 | } |