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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 | |||
| 1264 | jermar | 29 | /** |
| 30 | * @file cpu.c |
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| 31 | * @brief CPU subsystem initialization and listing. |
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| 32 | */ |
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| 33 | |||
| 1 | jermar | 34 | #include <cpu.h> |
| 15 | jermar | 35 | #include <arch.h> |
| 1 | jermar | 36 | #include <arch/cpu.h> |
| 814 | palkovsky | 37 | #include <mm/slab.h> |
| 1 | jermar | 38 | #include <mm/page.h> |
| 39 | #include <mm/frame.h> |
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| 40 | #include <arch/types.h> |
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| 41 | #include <config.h> |
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| 42 | #include <panic.h> |
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| 43 | #include <typedefs.h> |
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| 44 | #include <memstr.h> |
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| 788 | jermar | 45 | #include <adt/list.h> |
| 673 | jermar | 46 | #include <print.h> |
| 1 | jermar | 47 | |
| 48 | cpu_t *cpus; |
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| 49 | |||
| 108 | decky | 50 | /** Initialize CPUs |
| 51 | * |
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| 52 | * Initialize kernel CPUs support. |
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| 53 | * |
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| 54 | */ |
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| 1 | jermar | 55 | void cpu_init(void) { |
| 56 | int i, j; |
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| 57 | |||
| 458 | decky | 58 | #ifdef CONFIG_SMP |
| 1 | jermar | 59 | if (config.cpu_active == 1) { |
| 458 | decky | 60 | #endif /* CONFIG_SMP */ |
| 822 | palkovsky | 61 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count, |
| 62 | FRAME_ATOMIC); |
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| 1 | jermar | 63 | if (!cpus) |
| 64 | panic("malloc/cpus"); |
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| 65 | |||
| 66 | /* initialize everything */ |
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| 67 | memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0); |
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| 125 | jermar | 68 | |
| 1 | jermar | 69 | for (i=0; i < config.cpu_count; i++) { |
| 1138 | jermar | 70 | cpus[i].stack = (__u8 *) PA2KA(PFN2ADDR(frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_PANIC))); |
| 1 | jermar | 71 | |
| 72 | cpus[i].id = i; |
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| 73 | |||
| 623 | jermar | 74 | spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
| 75 | |||
| 1 | jermar | 76 | for (j = 0; j < RQ_COUNT; j++) { |
| 623 | jermar | 77 | spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
| 1 | jermar | 78 | list_initialize(&cpus[i].rq[j].rq_head); |
| 79 | } |
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| 80 | } |
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| 81 | |||
| 458 | decky | 82 | #ifdef CONFIG_SMP |
| 1 | jermar | 83 | } |
| 458 | decky | 84 | #endif /* CONFIG_SMP */ |
| 192 | jermar | 85 | |
| 86 | CPU = &cpus[config.cpu_active-1]; |
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| 1 | jermar | 87 | |
| 28 | jermar | 88 | CPU->active = 1; |
| 31 | jermar | 89 | CPU->tlb_active = 1; |
| 28 | jermar | 90 | |
| 1 | jermar | 91 | cpu_identify(); |
| 92 | cpu_arch_init(); |
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| 93 | } |
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| 673 | jermar | 94 | |
| 95 | /** List all processors. */ |
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| 96 | void cpu_list(void) |
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| 97 | { |
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| 98 | int i; |
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| 99 | |||
| 100 | for (i = 0; i < config.cpu_count; i++) { |
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| 101 | if (cpus[i].active) |
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| 102 | cpu_print_report(&cpus[i]); |
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| 103 | else |
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| 104 | printf("cpu%d: not active\n", i); |
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| 105 | } |
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| 106 | } |