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| Rev | Author | Line No. | Line |
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| 1702 | cejka | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
| 1 | jermar | 3 | * All rights reserved. |
| 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 | |||
| 1731 | jermar | 29 | /** @addtogroup generic |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 32 | |||
| 1264 | jermar | 33 | /** |
| 1702 | cejka | 34 | * @file |
| 1264 | jermar | 35 | * @brief CPU subsystem initialization and listing. |
| 36 | */ |
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| 37 | |||
| 1 | jermar | 38 | #include <cpu.h> |
| 15 | jermar | 39 | #include <arch.h> |
| 1 | jermar | 40 | #include <arch/cpu.h> |
| 814 | palkovsky | 41 | #include <mm/slab.h> |
| 1 | jermar | 42 | #include <mm/page.h> |
| 43 | #include <mm/frame.h> |
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| 44 | #include <arch/types.h> |
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| 45 | #include <config.h> |
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| 46 | #include <panic.h> |
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| 47 | #include <memstr.h> |
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| 788 | jermar | 48 | #include <adt/list.h> |
| 673 | jermar | 49 | #include <print.h> |
| 1 | jermar | 50 | |
| 51 | cpu_t *cpus; |
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| 52 | |||
| 108 | decky | 53 | /** Initialize CPUs |
| 54 | * |
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| 55 | * Initialize kernel CPUs support. |
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| 56 | * |
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| 57 | */ |
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| 1 | jermar | 58 | void cpu_init(void) { |
| 2115 | decky | 59 | unsigned int i, j; |
| 1 | jermar | 60 | |
| 2067 | jermar | 61 | #ifdef CONFIG_SMP |
| 1 | jermar | 62 | if (config.cpu_active == 1) { |
| 2067 | jermar | 63 | #endif /* CONFIG_SMP */ |
| 822 | palkovsky | 64 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count, |
| 65 | FRAME_ATOMIC); |
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| 1 | jermar | 66 | if (!cpus) |
| 67 | panic("malloc/cpus"); |
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| 68 | |||
| 69 | /* initialize everything */ |
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| 1780 | jermar | 70 | memsetb((uintptr_t) cpus, sizeof(cpu_t) * config.cpu_count, 0); |
| 125 | jermar | 71 | |
| 2115 | decky | 72 | for (i = 0; i < config.cpu_count; i++) { |
| 1780 | jermar | 73 | cpus[i].stack = (uint8_t *) frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_ATOMIC); |
| 1 | jermar | 74 | |
| 75 | cpus[i].id = i; |
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| 76 | |||
| 623 | jermar | 77 | spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
| 78 | |||
| 1 | jermar | 79 | for (j = 0; j < RQ_COUNT; j++) { |
| 623 | jermar | 80 | spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
| 1 | jermar | 81 | list_initialize(&cpus[i].rq[j].rq_head); |
| 82 | } |
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| 83 | } |
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| 84 | |||
| 2067 | jermar | 85 | #ifdef CONFIG_SMP |
| 1 | jermar | 86 | } |
| 2067 | jermar | 87 | #endif /* CONFIG_SMP */ |
| 192 | jermar | 88 | |
| 89 | CPU = &cpus[config.cpu_active-1]; |
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| 1 | jermar | 90 | |
| 28 | jermar | 91 | CPU->active = 1; |
| 31 | jermar | 92 | CPU->tlb_active = 1; |
| 28 | jermar | 93 | |
| 1 | jermar | 94 | cpu_identify(); |
| 95 | cpu_arch_init(); |
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| 96 | } |
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| 673 | jermar | 97 | |
| 98 | /** List all processors. */ |
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| 99 | void cpu_list(void) |
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| 100 | { |
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| 2115 | decky | 101 | unsigned int i; |
| 673 | jermar | 102 | |
| 103 | for (i = 0; i < config.cpu_count; i++) { |
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| 104 | if (cpus[i].active) |
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| 105 | cpu_print_report(&cpus[i]); |
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| 106 | else |
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| 3149 | svoboda | 107 | printf("cpu%u: not active\n", i); |
| 673 | jermar | 108 | } |
| 109 | } |
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| 1702 | cejka | 110 | |
| 1881 | jermar | 111 | /** @} |
| 1702 | cejka | 112 | */ |
| 113 |