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2128 | jermar | 1 | /* |
2159 | kebrt | 2 | * Copyright (c) 2007 Michal Kebrt |
2128 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup arm32 |
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30 | * @{ |
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31 | */ |
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32 | /** @file |
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2407 | stepan | 33 | * @brief ARM32 architecture specific functions. |
2128 | jermar | 34 | */ |
35 | |||
36 | #include <arch.h> |
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2159 | kebrt | 37 | #include <arch/boot.h> |
38 | #include <config.h> |
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2173 | kebrt | 39 | #include <arch/console.h> |
40 | #include <ddi/device.h> |
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2263 | kebrt | 41 | #include <genarch/fb/fb.h> |
42 | #include <genarch/fb/visuals.h> |
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43 | #include <ddi/irq.h> |
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2326 | kebrt | 44 | #include <arch/debug/print.h> |
2200 | jancik | 45 | #include <print.h> |
46 | #include <config.h> |
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2245 | stepan | 47 | #include <interrupt.h> |
2280 | jancik | 48 | #include <arch/regutils.h> |
2294 | kebrt | 49 | #include <arch/machine.h> |
2280 | jancik | 50 | #include <userspace.h> |
2289 | stepan | 51 | |
2407 | stepan | 52 | /** Information about loaded tasks. */ |
53 | bootinfo_t bootinfo; |
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2357 | kebrt | 54 | |
2407 | stepan | 55 | /** Performs arm32 specific initialization before main_bsp() is called. */ |
2128 | jermar | 56 | void arch_pre_main(void) |
57 | { |
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2159 | kebrt | 58 | int i; |
59 | |||
60 | init.cnt = bootinfo.cnt; |
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61 | |||
62 | for (i = 0; i < bootinfo.cnt; ++i) { |
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63 | init.tasks[i].addr = bootinfo.tasks[i].addr; |
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64 | init.tasks[i].size = bootinfo.tasks[i].size; |
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65 | } |
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2300 | kebrt | 66 | |
2128 | jermar | 67 | } |
68 | |||
2407 | stepan | 69 | /** Performs arm32 specific initialization before mm is initialized. */ |
2128 | jermar | 70 | void arch_pre_mm_init(void) |
71 | { |
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2245 | stepan | 72 | /* It is not assumed by default */ |
73 | interrupts_disable(); |
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2128 | jermar | 74 | } |
75 | |||
2407 | stepan | 76 | /** Performs arm32 specific initialization afterr mm is initialized. */ |
2128 | jermar | 77 | void arch_post_mm_init(void) |
78 | { |
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2294 | kebrt | 79 | machine_hw_map_init(); |
2284 | stepan | 80 | |
2464 | jermar | 81 | /* Initialize exception dispatch table */ |
2270 | jancik | 82 | exception_init(); |
83 | |||
2263 | kebrt | 84 | interrupt_init(); |
2235 | stepan | 85 | |
2284 | stepan | 86 | console_init(device_assign_devno()); |
2341 | kebrt | 87 | |
2360 | kebrt | 88 | #ifdef CONFIG_FB |
89 | fb_init(machine_get_fb_address(), 640, 480, 1920, VISUAL_RGB_8_8_8); |
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90 | #endif |
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2128 | jermar | 91 | } |
92 | |||
2407 | stepan | 93 | /** Performs arm32 specific tasks needed after cpu is initialized. |
94 | * |
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95 | * Currently the function is empty. |
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96 | */ |
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2128 | jermar | 97 | void arch_post_cpu_init(void) |
98 | { |
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99 | } |
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100 | |||
2411 | stepan | 101 | |
2407 | stepan | 102 | /** Performs arm32 specific tasks needed before the multiprocessing is |
103 | * initialized. |
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104 | * |
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105 | * Currently the function is empty because SMP is not supported. |
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106 | */ |
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2128 | jermar | 107 | void arch_pre_smp_init(void) |
108 | { |
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109 | } |
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110 | |||
2411 | stepan | 111 | |
2407 | stepan | 112 | /** Performs arm32 specific tasks needed after the multiprocessing is |
113 | * initialized. |
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114 | * |
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115 | * Currently the function is empty because SMP is not supported. |
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116 | */ |
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2128 | jermar | 117 | void arch_post_smp_init(void) |
118 | { |
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119 | } |
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120 | |||
2329 | kebrt | 121 | |
2407 | stepan | 122 | /** Performs arm32 specific tasks needed before the new task is run. */ |
2128 | jermar | 123 | void before_task_runs_arch(void) |
124 | { |
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2329 | kebrt | 125 | tlb_invalidate_all(); |
2128 | jermar | 126 | } |
127 | |||
2411 | stepan | 128 | |
2407 | stepan | 129 | /** Performs arm32 specific tasks needed before the new thread is scheduled. |
130 | * |
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131 | * It sets supervisor_sp. |
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132 | */ |
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2128 | jermar | 133 | void before_thread_runs_arch(void) |
134 | { |
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2464 | jermar | 135 | uint8_t *stck; |
136 | |||
137 | stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA]; |
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138 | supervisor_sp = (uintptr_t) stck; |
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2128 | jermar | 139 | } |
140 | |||
2407 | stepan | 141 | /** Performs arm32 specific tasks before a thread stops running. |
142 | * |
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143 | * Currently the function is empty. |
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144 | */ |
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2128 | jermar | 145 | void after_thread_ran_arch(void) |
146 | { |
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147 | } |
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148 | |||
2407 | stepan | 149 | /** Halts CPU. */ |
2300 | kebrt | 150 | void cpu_halt(void) |
151 | { |
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152 | machine_cpu_halt(); |
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153 | } |
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154 | |||
2128 | jermar | 155 | /** @} |
156 | */ |