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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 <arch.h> |
29 | #include <arch.h> |
30 | 30 | ||
31 | #include <arch/types.h> |
31 | #include <arch/types.h> |
32 | #include <typedefs.h> |
32 | #include <typedefs.h> |
33 | 33 | ||
34 | #include <arch/pm.h> |
34 | #include <arch/pm.h> |
35 | 35 | ||
36 | #include <arch/ega.h> |
36 | #include <arch/ega.h> |
37 | #include <arch/i8042.h> |
37 | #include <arch/i8042.h> |
38 | #include <arch/i8254.h> |
38 | #include <arch/i8254.h> |
39 | #include <arch/i8259.h> |
39 | #include <arch/i8259.h> |
40 | 40 | ||
41 | #include <arch/context.h> |
41 | #include <arch/context.h> |
42 | 42 | ||
43 | #include <config.h> |
43 | #include <config.h> |
44 | 44 | ||
45 | #include <arch/interrupt.h> |
45 | #include <arch/interrupt.h> |
46 | 46 | ||
- | 47 | #include <arch/asm.h> |
|
- | 48 | ||
- | 49 | void write_dr0(__u32 v) |
|
- | 50 | { |
|
- | 51 | __asm__("movl %0,%%dr0" : : "r" (v)); |
|
- | 52 | } |
|
- | 53 | ||
- | 54 | inline __u32 read_dr0(void) |
|
- | 55 | { |
|
- | 56 | __u32 v; |
|
- | 57 | ||
- | 58 | __asm__("movl %%dr0,%0\n" : "=r" (v)); |
|
- | 59 | ||
- | 60 | return v; |
|
- | 61 | } |
|
47 | 62 | ||
48 | void arch_pre_mm_init(void) |
63 | void arch_pre_mm_init(void) |
49 | { |
64 | { |
50 | pm_init(); |
65 | pm_init(); |
51 | 66 | ||
52 | write_dr0(config.cpu_active - 1); |
67 | write_dr0(config.cpu_active - 1); |
53 | 68 | ||
54 | if (config.cpu_active == 1) { |
69 | if (config.cpu_active == 1) { |
55 | i8042_init(); /* a20 bit */ |
70 | i8042_init(); /* a20 bit */ |
56 | i8259_init(); /* PIC */ |
71 | i8259_init(); /* PIC */ |
57 | i8254_init(); /* hard clock */ |
72 | i8254_init(); /* hard clock */ |
58 | 73 | ||
59 | trap_register(VECTOR_SYSCALL, syscall); |
74 | trap_register(VECTOR_SYSCALL, syscall); |
60 | 75 | ||
61 | #ifdef __SMP__ |
76 | #ifdef __SMP__ |
62 | trap_register(VECTOR_TLB_SHOOTDOWN_IPI, tlb_shootdown_ipi); |
77 | trap_register(VECTOR_TLB_SHOOTDOWN_IPI, tlb_shootdown_ipi); |
63 | trap_register(VECTOR_WAKEUP_IPI, wakeup_ipi); |
78 | trap_register(VECTOR_WAKEUP_IPI, wakeup_ipi); |
64 | #endif /* __SMP__ */ |
79 | #endif /* __SMP__ */ |
65 | } |
80 | } |
66 | } |
81 | } |
67 | 82 | ||
68 | void arch_post_mm_init() |
83 | void arch_post_mm_init() |
69 | { |
84 | { |
70 | if (config.cpu_active == 1) { |
85 | if (config.cpu_active == 1) { |
71 | ega_init(); /* video */ |
86 | ega_init(); /* video */ |
72 | } |
87 | } |
73 | } |
88 | } |
74 | 89 | ||
75 | void calibrate_delay_loop(void) |
90 | void calibrate_delay_loop(void) |
76 | { |
91 | { |
77 | i8254_calibrate_delay_loop(); |
92 | i8254_calibrate_delay_loop(); |
78 | i8254_normal_operation(); |
93 | i8254_normal_operation(); |
79 | } |
94 | } |
80 | 95 |