| 1 | /*
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| 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 |
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| 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 |
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| 41 | cpu_private_page_t *the = NULL;
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| 42 |
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| 43 | cpu_t *cpus;
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| 44 |
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| 45 | void cpu_init(void) {
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| 46 | int i, j;
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| 47 |
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| 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 |
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| 55 | /* initialize everything */
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| 56 | memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0);
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| 57 |
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| 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 |
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| 63 | cpus[i].id = i;
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| 64 |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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| 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 | }
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