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1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | #include <cpu.h> |
29 | #include <cpu.h> |
30 | #include <arch.h> |
30 | #include <arch.h> |
31 | #include <arch/cpu.h> |
31 | #include <arch/cpu.h> |
32 | #include <mm/heap.h> |
32 | #include <mm/heap.h> |
33 | #include <mm/page.h> |
33 | #include <mm/page.h> |
34 | #include <mm/frame.h> |
34 | #include <mm/frame.h> |
35 | #include <arch/types.h> |
35 | #include <arch/types.h> |
36 | #include <config.h> |
36 | #include <config.h> |
37 | #include <panic.h> |
37 | #include <panic.h> |
38 | #include <typedefs.h> |
38 | #include <typedefs.h> |
39 | #include <memstr.h> |
39 | #include <memstr.h> |
40 | #include <list.h> |
40 | #include <list.h> |
41 | 41 | ||
42 | cpu_t *cpus; |
42 | cpu_t *cpus; |
43 | 43 | ||
44 | /** Initialize CPUs |
44 | /** Initialize CPUs |
45 | * |
45 | * |
46 | * Initialize kernel CPUs support. |
46 | * Initialize kernel CPUs support. |
47 | * |
47 | * |
48 | */ |
48 | */ |
49 | void cpu_init(void) { |
49 | void cpu_init(void) { |
50 | int i, j; |
50 | int i, j; |
51 | 51 | ||
52 | #ifdef CONFIG_SMP |
52 | #ifdef CONFIG_SMP |
53 | if (config.cpu_active == 1) { |
53 | if (config.cpu_active == 1) { |
54 | #endif /* CONFIG_SMP */ |
54 | #endif /* CONFIG_SMP */ |
55 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count); |
55 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count); |
56 | if (!cpus) |
56 | if (!cpus) |
57 | panic("malloc/cpus"); |
57 | panic("malloc/cpus"); |
58 | 58 | ||
59 | /* initialize everything */ |
59 | /* initialize everything */ |
60 | memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0); |
60 | memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0); |
61 | 61 | ||
62 | for (i=0; i < config.cpu_count; i++) { |
62 | for (i=0; i < config.cpu_count; i++) { |
63 | cpus[i].stack = (__u8 *) frame_alloc(FRAME_KA | FRAME_PANIC, ONE_FRAME); |
63 | cpus[i].stack = (__u8 *) frame_alloc(FRAME_KA | FRAME_PANIC, ONE_FRAME); |
64 | if (!cpus[i].stack) |
- | |
65 | panic("malloc/cpus[%d].stack\n", i); |
- | |
66 | 64 | ||
67 | cpus[i].id = i; |
65 | cpus[i].id = i; |
68 | 66 | ||
69 | spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
67 | spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
70 | 68 | ||
71 | #ifdef CONFIG_SMP |
69 | #ifdef CONFIG_SMP |
72 | waitq_initialize(&cpus[i].kcpulb_wq); |
70 | waitq_initialize(&cpus[i].kcpulb_wq); |
73 | #endif /* __SMP */ |
71 | #endif /* __SMP */ |
74 | 72 | ||
75 | for (j = 0; j < RQ_COUNT; j++) { |
73 | for (j = 0; j < RQ_COUNT; j++) { |
76 | spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
74 | spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
77 | list_initialize(&cpus[i].rq[j].rq_head); |
75 | list_initialize(&cpus[i].rq[j].rq_head); |
78 | } |
76 | } |
79 | } |
77 | } |
80 | 78 | ||
81 | #ifdef CONFIG_SMP |
79 | #ifdef CONFIG_SMP |
82 | } |
80 | } |
83 | #endif /* CONFIG_SMP */ |
81 | #endif /* CONFIG_SMP */ |
84 | 82 | ||
85 | CPU = &cpus[config.cpu_active-1]; |
83 | CPU = &cpus[config.cpu_active-1]; |
86 | 84 | ||
87 | CPU->active = 1; |
85 | CPU->active = 1; |
88 | CPU->tlb_active = 1; |
86 | CPU->tlb_active = 1; |
89 | 87 | ||
90 | cpu_identify(); |
88 | cpu_identify(); |
91 | cpu_arch_init(); |
89 | cpu_arch_init(); |
92 | } |
90 | } |
93 | 91 |