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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 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 sparc64 |
29 | /** @addtogroup sparc64 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch.h> |
35 | #include <arch.h> |
36 | #include <debug.h> |
36 | #include <debug.h> |
37 | #include <config.h> |
37 | #include <config.h> |
38 | #include <arch/trap/trap.h> |
38 | #include <arch/trap/trap.h> |
39 | #include <arch/console.h> |
39 | #include <arch/console.h> |
40 | #include <arch/drivers/tick.h> |
40 | #include <arch/drivers/tick.h> |
41 | #include <proc/thread.h> |
41 | #include <proc/thread.h> |
42 | #include <console/console.h> |
42 | #include <console/console.h> |
43 | #include <arch/boot/boot.h> |
43 | #include <arch/boot/boot.h> |
44 | #include <arch/arch.h> |
44 | #include <arch/arch.h> |
- | 45 | #include <arch/asm.h> |
|
45 | #include <arch/mm/page.h> |
46 | #include <arch/mm/page.h> |
46 | #include <arch/stack.h> |
47 | #include <arch/stack.h> |
47 | #include <userspace.h> |
48 | #include <userspace.h> |
48 | 49 | ||
49 | bootinfo_t bootinfo; |
50 | bootinfo_t bootinfo; |
50 | 51 | ||
51 | void arch_pre_main(void) |
52 | void arch_pre_main(void) |
52 | { |
53 | { |
53 | /* Setup usermode */ |
54 | /* Setup usermode */ |
54 | init.cnt = bootinfo.taskmap.count; |
55 | init.cnt = bootinfo.taskmap.count; |
55 | 56 | ||
56 | uint32_t i; |
57 | uint32_t i; |
57 | 58 | ||
58 | for (i = 0; i < bootinfo.taskmap.count; i++) { |
59 | for (i = 0; i < bootinfo.taskmap.count; i++) { |
59 | init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr); |
60 | init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr); |
60 | init.tasks[i].size = bootinfo.taskmap.tasks[i].size; |
61 | init.tasks[i].size = bootinfo.taskmap.tasks[i].size; |
61 | } |
62 | } |
62 | } |
63 | } |
63 | 64 | ||
64 | void arch_pre_mm_init(void) |
65 | void arch_pre_mm_init(void) |
65 | { |
66 | { |
66 | trap_init(); |
67 | trap_init(); |
67 | tick_init(); |
68 | tick_init(); |
68 | } |
69 | } |
69 | 70 | ||
70 | void arch_post_mm_init(void) |
71 | void arch_post_mm_init(void) |
71 | { |
72 | { |
72 | standalone_sparc64_console_init(); |
73 | standalone_sparc64_console_init(); |
73 | } |
74 | } |
74 | 75 | ||
75 | void arch_pre_smp_init(void) |
76 | void arch_pre_smp_init(void) |
76 | { |
77 | { |
77 | } |
78 | } |
78 | 79 | ||
79 | void arch_post_smp_init(void) |
80 | void arch_post_smp_init(void) |
80 | { |
81 | { |
81 | thread_t *t; |
82 | thread_t *t; |
82 | 83 | ||
83 | /* |
84 | /* |
84 | * Create thread that polls keyboard. |
85 | * Create thread that polls keyboard. |
85 | */ |
86 | */ |
86 | t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll"); |
87 | t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll"); |
87 | if (!t) |
88 | if (!t) |
88 | panic("cannot create kkbdpoll\n"); |
89 | panic("cannot create kkbdpoll\n"); |
89 | thread_ready(t); |
90 | thread_ready(t); |
90 | } |
91 | } |
91 | 92 | ||
- | 93 | /** Calibrate delay loop. |
|
- | 94 | * |
|
- | 95 | * On sparc64, we implement delay() by waiting for the TICK register to |
|
- | 96 | * reach a pre-computed value, as opposed to performing some pre-computed |
|
- | 97 | * amount of instructions of known duration. We set the delay_loop_const |
|
- | 98 | * to 1 in order to neutralize the multiplication done by delay(). |
|
- | 99 | */ |
|
92 | void calibrate_delay_loop(void) |
100 | void calibrate_delay_loop(void) |
93 | { |
101 | { |
- | 102 | CPU->delay_loop_const = 1; |
|
- | 103 | } |
|
- | 104 | ||
- | 105 | /** Wait several microseconds. |
|
- | 106 | * |
|
- | 107 | * We assume that interrupts are already disabled. |
|
- | 108 | * |
|
- | 109 | * @param t Microseconds to wait. |
|
- | 110 | */ |
|
- | 111 | void asm_delay_loop(const uint32_t usec) |
|
- | 112 | { |
|
- | 113 | uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t) CPU->arch.clock_frequency / 1000000; |
|
- | 114 | ||
- | 115 | while (tick_read() < stop) |
|
- | 116 | ; |
|
94 | } |
117 | } |
95 | 118 | ||
96 | /** Switch to userspace. */ |
119 | /** Switch to userspace. */ |
97 | void userspace(uspace_arg_t *kernel_uarg) |
120 | void userspace(uspace_arg_t *kernel_uarg) |
98 | { |
121 | { |
99 | switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry, |
122 | switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry, |
100 | ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE |
123 | ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE |
101 | - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS), |
124 | - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS), |
102 | (uintptr_t) kernel_uarg->uspace_uarg); |
125 | (uintptr_t) kernel_uarg->uspace_uarg); |
103 | 126 | ||
104 | for (;;) |
127 | for (;;) |
105 | ; |
128 | ; |
106 | /* not reached */ |
129 | /* not reached */ |
107 | } |
130 | } |
108 | 131 | ||
109 | /** @} |
132 | /** @} |
110 | */ |
133 | */ |
111 | 134 |