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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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| 30 | #include <arch/cpu.h> |
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| 31 | #include <mm/heap.h> |
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| 32 | #include <mm/page.h> |
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| 33 | #include <mm/frame.h> |
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| 34 | #include <arch/types.h> |
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| 35 | #include <config.h> |
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| 36 | #include <panic.h> |
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| 37 | #include <typedefs.h> |
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| 38 | #include <memstr.h> |
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| 39 | #include <list.h> |
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| 40 | |||
| 41 | cpu_private_page_t *the = NULL; |
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| 42 | |||
| 43 | cpu_t *cpus; |
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| 44 | |||
| 45 | void cpu_init(void) { |
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| 46 | int i, j; |
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| 47 | |||
| 48 | #ifdef __SMP__ |
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| 49 | if (config.cpu_active == 1) { |
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| 50 | #endif /* __SMP__ */ |
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| 51 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count); |
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| 52 | if (!cpus) |
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| 53 | panic("malloc/cpus"); |
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| 54 | |||
| 55 | /* initialize everything */ |
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| 56 | memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0); |
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| 57 | |||
| 58 | for (i=0; i < config.cpu_count; i++) { |
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| 59 | cpus[i].stack = (__u8 *) malloc(CPU_STACK_SIZE); |
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| 60 | if (!cpus[i].stack) |
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| 61 | panic("malloc/cpus[%d].stack\n", i); |
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| 62 | |||
| 63 | cpus[i].id = i; |
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| 64 | |||
| 65 | #ifdef __SMP__ |
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| 66 | waitq_initialize(&cpus[i].kcpulb_wq); |
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| 67 | #endif /* __SMP */ |
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| 68 | |||
| 69 | for (j = 0; j < RQ_COUNT; j++) { |
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| 70 | list_initialize(&cpus[i].rq[j].rq_head); |
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| 71 | } |
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| 72 | } |
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| 73 | |||
| 74 | the = (cpu_private_page_t *) frame_alloc(FRAME_KA | FRAME_PANIC); |
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| 75 | memsetb((__address) the, PAGE_SIZE, 0); |
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| 76 | #ifdef __SMP__ |
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| 77 | } |
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| 78 | else { |
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| 79 | __address frame; |
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| 80 | |||
| 81 | frame = frame_alloc(FRAME_KA | FRAME_PANIC); |
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| 82 | memsetb(frame, PAGE_SIZE, 0); |
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| 83 | map_page_to_frame((__address) the, frame, PAGE_CACHEABLE, 1); |
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| 84 | } |
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| 85 | #endif /* __SMP__ */ |
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| 86 | |||
| 87 | the->cpu = &cpus[config.cpu_active-1]; |
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| 88 | cpu_identify(); |
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| 89 | cpu_arch_init(); |
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| 90 | } |