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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 | |||
37 | #include <arch.h> |
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2159 | kebrt | 38 | #include <arch/boot.h> |
39 | #include <config.h> |
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2173 | kebrt | 40 | #include <arch/console.h> |
41 | #include <ddi/device.h> |
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2263 | kebrt | 42 | #include <genarch/fb/fb.h> |
43 | #include <genarch/fb/visuals.h> |
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44 | #include <ddi/irq.h> |
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2326 | kebrt | 45 | #include <arch/debug/print.h> |
2200 | jancik | 46 | #include <print.h> |
47 | #include <config.h> |
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2245 | stepan | 48 | #include <interrupt.h> |
2280 | jancik | 49 | #include <arch/regutils.h> |
2294 | kebrt | 50 | #include <arch/machine.h> |
2280 | jancik | 51 | #include <userspace.h> |
2289 | stepan | 52 | |
2407 | stepan | 53 | /** Information about loaded tasks. */ |
54 | bootinfo_t bootinfo; |
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2357 | kebrt | 55 | |
2407 | stepan | 56 | /** Temporary exception stack pointer. |
57 | * |
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58 | * Temporary stack is used in exceptions handling routines |
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59 | * before switching to thread's kernel stack. |
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60 | */ |
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2289 | stepan | 61 | extern uintptr_t supervisor_sp; |
2159 | kebrt | 62 | |
2329 | kebrt | 63 | |
2407 | stepan | 64 | /** Performs arm32 specific initialization before main_bsp() is called. */ |
2128 | jermar | 65 | void arch_pre_main(void) |
66 | { |
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2159 | kebrt | 67 | int i; |
68 | |||
69 | init.cnt = bootinfo.cnt; |
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70 | |||
71 | for (i = 0; i < bootinfo.cnt; ++i) { |
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72 | init.tasks[i].addr = bootinfo.tasks[i].addr; |
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73 | init.tasks[i].size = bootinfo.tasks[i].size; |
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74 | } |
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2300 | kebrt | 75 | |
2128 | jermar | 76 | } |
77 | |||
2407 | stepan | 78 | /** Performs arm32 specific initialization before mm is initialized. */ |
2128 | jermar | 79 | void arch_pre_mm_init(void) |
80 | { |
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2245 | stepan | 81 | /* It is not assumed by default */ |
82 | interrupts_disable(); |
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2128 | jermar | 83 | } |
84 | |||
2407 | stepan | 85 | /** Performs arm32 specific initialization afterr mm is initialized. */ |
2128 | jermar | 86 | void arch_post_mm_init(void) |
87 | { |
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2294 | kebrt | 88 | machine_hw_map_init(); |
2284 | stepan | 89 | |
90 | /* Initialize dispatch table */ |
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2270 | jancik | 91 | exception_init(); |
92 | |||
2263 | kebrt | 93 | interrupt_init(); |
2235 | stepan | 94 | |
2284 | stepan | 95 | console_init(device_assign_devno()); |
2341 | kebrt | 96 | |
2360 | kebrt | 97 | #ifdef CONFIG_FB |
98 | fb_init(machine_get_fb_address(), 640, 480, 1920, VISUAL_RGB_8_8_8); |
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99 | #endif |
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2128 | jermar | 100 | } |
101 | |||
2407 | stepan | 102 | /** Performs arm32 specific tasks needed after cpu is initialized. |
103 | * |
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104 | * Currently the function is empty. |
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105 | */ |
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2128 | jermar | 106 | void arch_post_cpu_init(void) |
107 | { |
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108 | } |
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109 | |||
2407 | stepan | 110 | /** Performs arm32 specific tasks needed before the multiprocessing is |
111 | * initialized. |
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112 | * |
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113 | * Currently the function is empty because SMP is not supported. |
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114 | */ |
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2128 | jermar | 115 | void arch_pre_smp_init(void) |
116 | { |
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117 | } |
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118 | |||
2407 | stepan | 119 | /** Performs arm32 specific tasks needed after the multiprocessing is |
120 | * initialized. |
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121 | * |
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122 | * Currently the function is empty because SMP is not supported. |
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123 | */ |
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2128 | jermar | 124 | void arch_post_smp_init(void) |
125 | { |
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126 | } |
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127 | |||
2329 | kebrt | 128 | |
2407 | stepan | 129 | /** Performs arm32 specific tasks needed before the new task is run. */ |
2128 | jermar | 130 | void before_task_runs_arch(void) |
131 | { |
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2329 | kebrt | 132 | tlb_invalidate_all(); |
2128 | jermar | 133 | } |
134 | |||
2407 | stepan | 135 | /** Performs arm32 specific tasks needed before the new thread is scheduled. |
136 | * |
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137 | * It sets supervisor_sp. |
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138 | */ |
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2128 | jermar | 139 | void before_thread_runs_arch(void) |
140 | { |
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2298 | stepan | 141 | supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE-SP_DELTA]; |
2128 | jermar | 142 | } |
143 | |||
2407 | stepan | 144 | /** Performs arm32 specific tasks before a thread stops running. |
145 | * |
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146 | * Currently the function is empty. |
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147 | */ |
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2128 | jermar | 148 | void after_thread_ran_arch(void) |
149 | { |
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150 | } |
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151 | |||
2407 | stepan | 152 | /** Halts CPU. */ |
2300 | kebrt | 153 | void cpu_halt(void) |
154 | { |
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155 | machine_cpu_halt(); |
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156 | } |
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157 | |||
2128 | jermar | 158 | /** @} |
159 | */ |
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2280 | jancik | 160 | |
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173 |