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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 | /** @defgroup cpu CPU |
|
- | 30 | * @ingroup kernel |
|
- | 31 | * @{ |
|
- | 32 | * @} |
|
- | 33 | */ |
|
- | 34 | ||
- | 35 | /** @addtogroup genericcpu generic |
|
- | 36 | * @ingroup cpu |
|
- | 37 | * @{ |
|
- | 38 | */ |
|
- | 39 | ||
29 | /** |
40 | /** |
30 | * @file cpu.c |
41 | * @file |
31 | * @brief CPU subsystem initialization and listing. |
42 | * @brief CPU subsystem initialization and listing. |
32 | */ |
43 | */ |
33 | 44 | ||
34 | #include <cpu.h> |
45 | #include <cpu.h> |
35 | #include <arch.h> |
46 | #include <arch.h> |
36 | #include <arch/cpu.h> |
47 | #include <arch/cpu.h> |
37 | #include <mm/slab.h> |
48 | #include <mm/slab.h> |
38 | #include <mm/page.h> |
49 | #include <mm/page.h> |
39 | #include <mm/frame.h> |
50 | #include <mm/frame.h> |
40 | #include <arch/types.h> |
51 | #include <arch/types.h> |
41 | #include <config.h> |
52 | #include <config.h> |
42 | #include <panic.h> |
53 | #include <panic.h> |
43 | #include <typedefs.h> |
54 | #include <typedefs.h> |
44 | #include <memstr.h> |
55 | #include <memstr.h> |
45 | #include <adt/list.h> |
56 | #include <adt/list.h> |
46 | #include <print.h> |
57 | #include <print.h> |
47 | 58 | ||
48 | cpu_t *cpus; |
59 | cpu_t *cpus; |
49 | 60 | ||
50 | /** Initialize CPUs |
61 | /** Initialize CPUs |
51 | * |
62 | * |
52 | * Initialize kernel CPUs support. |
63 | * Initialize kernel CPUs support. |
53 | * |
64 | * |
54 | */ |
65 | */ |
55 | void cpu_init(void) { |
66 | void cpu_init(void) { |
56 | int i, j; |
67 | int i, j; |
57 | 68 | ||
58 | #ifdef CONFIG_SMP |
69 | #ifdef CONFIG_SMP |
59 | if (config.cpu_active == 1) { |
70 | if (config.cpu_active == 1) { |
60 | #endif /* CONFIG_SMP */ |
71 | #endif /* CONFIG_SMP */ |
61 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count, |
72 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count, |
62 | FRAME_ATOMIC); |
73 | FRAME_ATOMIC); |
63 | if (!cpus) |
74 | if (!cpus) |
64 | panic("malloc/cpus"); |
75 | panic("malloc/cpus"); |
65 | 76 | ||
66 | /* initialize everything */ |
77 | /* initialize everything */ |
67 | memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0); |
78 | memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0); |
68 | 79 | ||
69 | for (i=0; i < config.cpu_count; i++) { |
80 | for (i=0; i < config.cpu_count; i++) { |
70 | cpus[i].stack = (__u8 *) PA2KA(PFN2ADDR(frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_PANIC))); |
81 | cpus[i].stack = (__u8 *) PA2KA(PFN2ADDR(frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_PANIC))); |
71 | 82 | ||
72 | cpus[i].id = i; |
83 | cpus[i].id = i; |
73 | 84 | ||
74 | spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
85 | spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
75 | 86 | ||
76 | for (j = 0; j < RQ_COUNT; j++) { |
87 | for (j = 0; j < RQ_COUNT; j++) { |
77 | spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
88 | spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
78 | list_initialize(&cpus[i].rq[j].rq_head); |
89 | list_initialize(&cpus[i].rq[j].rq_head); |
79 | } |
90 | } |
80 | } |
91 | } |
81 | 92 | ||
82 | #ifdef CONFIG_SMP |
93 | #ifdef CONFIG_SMP |
83 | } |
94 | } |
84 | #endif /* CONFIG_SMP */ |
95 | #endif /* CONFIG_SMP */ |
85 | 96 | ||
86 | CPU = &cpus[config.cpu_active-1]; |
97 | CPU = &cpus[config.cpu_active-1]; |
87 | 98 | ||
88 | CPU->active = 1; |
99 | CPU->active = 1; |
89 | CPU->tlb_active = 1; |
100 | CPU->tlb_active = 1; |
90 | 101 | ||
91 | cpu_identify(); |
102 | cpu_identify(); |
92 | cpu_arch_init(); |
103 | cpu_arch_init(); |
93 | } |
104 | } |
94 | 105 | ||
95 | /** List all processors. */ |
106 | /** List all processors. */ |
96 | void cpu_list(void) |
107 | void cpu_list(void) |
97 | { |
108 | { |
98 | int i; |
109 | int i; |
99 | 110 | ||
100 | for (i = 0; i < config.cpu_count; i++) { |
111 | for (i = 0; i < config.cpu_count; i++) { |
101 | if (cpus[i].active) |
112 | if (cpus[i].active) |
102 | cpu_print_report(&cpus[i]); |
113 | cpu_print_report(&cpus[i]); |
103 | else |
114 | else |
104 | printf("cpu%d: not active\n", i); |
115 | printf("cpu%d: not active\n", i); |
105 | } |
116 | } |
106 | } |
117 | } |
- | 118 | ||
- | 119 | /** @} |
|
- | 120 | */ |
|
- | 121 | ||
107 | 122 |