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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 | /** @addtogroup generic |
29 | /** @addtogroup generic |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** |
33 | /** |
34 | * @file |
34 | * @file |
35 | * @brief CPU subsystem initialization and listing. |
35 | * @brief CPU subsystem initialization and listing. |
36 | */ |
36 | */ |
37 | 37 | ||
38 | #include <cpu.h> |
38 | #include <cpu.h> |
39 | #include <arch.h> |
39 | #include <arch.h> |
40 | #include <arch/cpu.h> |
40 | #include <arch/cpu.h> |
41 | #include <mm/slab.h> |
41 | #include <mm/slab.h> |
42 | #include <mm/page.h> |
42 | #include <mm/page.h> |
43 | #include <mm/frame.h> |
43 | #include <mm/frame.h> |
44 | #include <arch/types.h> |
44 | #include <arch/types.h> |
45 | #include <config.h> |
45 | #include <config.h> |
46 | #include <panic.h> |
46 | #include <panic.h> |
47 | #include <memstr.h> |
47 | #include <memstr.h> |
48 | #include <adt/list.h> |
48 | #include <adt/list.h> |
49 | #include <print.h> |
49 | #include <print.h> |
50 | 50 | ||
51 | cpu_t *cpus; |
51 | cpu_t *cpus; |
52 | 52 | ||
53 | /** Initialize CPUs |
53 | /** Initialize CPUs |
54 | * |
54 | * |
55 | * Initialize kernel CPUs support. |
55 | * Initialize kernel CPUs support. |
56 | * |
56 | * |
57 | */ |
57 | */ |
58 | void cpu_init(void) { |
58 | void cpu_init(void) { |
59 | unsigned int i, j; |
59 | unsigned int i, j; |
60 | 60 | ||
61 | #ifdef CONFIG_SMP |
61 | #ifdef CONFIG_SMP |
62 | if (config.cpu_active == 1) { |
62 | if (config.cpu_active == 1) { |
63 | #endif /* CONFIG_SMP */ |
63 | #endif /* CONFIG_SMP */ |
64 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count, |
64 | cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count, |
65 | FRAME_ATOMIC); |
65 | FRAME_ATOMIC); |
66 | if (!cpus) |
66 | if (!cpus) |
67 | panic("malloc/cpus"); |
67 | panic("Cannot allocate CPU structures."); |
68 | 68 | ||
69 | /* initialize everything */ |
69 | /* initialize everything */ |
70 | memsetb(cpus, sizeof(cpu_t) * config.cpu_count, 0); |
70 | memsetb(cpus, sizeof(cpu_t) * config.cpu_count, 0); |
71 | 71 | ||
72 | for (i = 0; i < config.cpu_count; i++) { |
72 | for (i = 0; i < config.cpu_count; i++) { |
73 | cpus[i].stack = (uint8_t *) frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_ATOMIC); |
73 | cpus[i].stack = (uint8_t *) frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_ATOMIC); |
74 | 74 | ||
75 | cpus[i].id = i; |
75 | cpus[i].id = i; |
76 | 76 | ||
77 | spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
77 | spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
78 | 78 | ||
79 | for (j = 0; j < RQ_COUNT; j++) { |
79 | for (j = 0; j < RQ_COUNT; j++) { |
80 | spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
80 | spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
81 | list_initialize(&cpus[i].rq[j].rq_head); |
81 | list_initialize(&cpus[i].rq[j].rq_head); |
82 | } |
82 | } |
83 | } |
83 | } |
84 | 84 | ||
85 | #ifdef CONFIG_SMP |
85 | #ifdef CONFIG_SMP |
86 | } |
86 | } |
87 | #endif /* CONFIG_SMP */ |
87 | #endif /* CONFIG_SMP */ |
88 | 88 | ||
89 | CPU = &cpus[config.cpu_active-1]; |
89 | CPU = &cpus[config.cpu_active - 1]; |
90 | 90 | ||
91 | CPU->active = 1; |
91 | CPU->active = 1; |
92 | CPU->tlb_active = 1; |
92 | CPU->tlb_active = 1; |
93 | 93 | ||
94 | cpu_identify(); |
94 | cpu_identify(); |
95 | cpu_arch_init(); |
95 | cpu_arch_init(); |
96 | } |
96 | } |
97 | 97 | ||
98 | /** List all processors. */ |
98 | /** List all processors. */ |
99 | void cpu_list(void) |
99 | void cpu_list(void) |
100 | { |
100 | { |
101 | unsigned int i; |
101 | unsigned int i; |
102 | 102 | ||
103 | for (i = 0; i < config.cpu_count; i++) { |
103 | for (i = 0; i < config.cpu_count; i++) { |
104 | if (cpus[i].active) |
104 | if (cpus[i].active) |
105 | cpu_print_report(&cpus[i]); |
105 | cpu_print_report(&cpus[i]); |
106 | else |
106 | else |
107 | printf("cpu%u: not active\n", i); |
107 | printf("cpu%u: not active\n", i); |
108 | } |
108 | } |
109 | } |
109 | } |
110 | 110 | ||
111 | /** @} |
111 | /** @} |
112 | */ |
112 | */ |
113 | 113 | ||
114 | 114 |