1 | /*
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2 | * Copyright (c) 2007 Michal Kebrt
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3 | * All rights reserved.
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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 |
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29 | /** @addtogroup arm32
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30 | * @{
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31 | */
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32 | /** @file
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33 | * @brief ARM32 architecture specific functions.
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34 | */
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35 |
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36 | #include <arch.h>
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37 | #include <config.h>
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38 | #include <genarch/fb/fb.h>
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39 | #include <genarch/fb/visuals.h>
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40 | #include <sysinfo/sysinfo.h>
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41 | #include <console/console.h>
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42 | #include <ddi/irq.h>
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43 | #include <print.h>
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44 | #include <config.h>
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45 | #include <interrupt.h>
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46 | #include <arch/regutils.h>
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47 | #include <userspace.h>
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48 | #include <macros.h>
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49 | #include <string.h>
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50 | #include <arch/ras.h>
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51 |
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52 | #ifdef MACHINE_testarm
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53 | #include <arch/mach/testarm/testarm.h>
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54 | #endif
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55 |
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56 | #ifdef MACHINE_integratorcp
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57 | #include <arch/mach/integratorcp/integratorcp.h>
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58 | #endif
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59 |
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60 |
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61 | /** Performs arm32-specific initialization before main_bsp() is called. */
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62 | void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
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63 | {
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64 | unsigned int i;
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65 |
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66 | init.cnt = bootinfo->cnt;
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67 |
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68 | for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); ++i) {
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69 | init.tasks[i].addr = bootinfo->tasks[i].addr;
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70 | init.tasks[i].size = bootinfo->tasks[i].size;
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71 | str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
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72 | bootinfo->tasks[i].name);
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73 | }
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74 | }
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75 |
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76 | /** Performs arm32 specific initialization before mm is initialized. */
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77 | void arch_pre_mm_init(void)
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78 | {
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79 | /* It is not assumed by default */
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80 | interrupts_disable();
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81 | }
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82 |
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83 | /** Performs arm32 specific initialization afterr mm is initialized. */
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84 | void arch_post_mm_init(void)
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85 | {
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86 | machine_init();
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87 |
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88 | /* Initialize exception dispatch table */
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89 | exception_init();
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90 | interrupt_init();
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91 |
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92 | /* Initialize Restartable Atomic Sequences support. */
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93 | ras_init();
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94 |
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95 | machine_output_init();
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96 | }
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97 |
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98 | /** Performs arm32 specific tasks needed after cpu is initialized.
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99 | *
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100 | * Currently the function is empty.
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101 | */
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102 | void arch_post_cpu_init(void)
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103 | {
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104 | }
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105 |
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106 |
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107 | /** Performs arm32 specific tasks needed before the multiprocessing is
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108 | * initialized.
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109 | *
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110 | * Currently the function is empty because SMP is not supported.
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111 | */
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112 | void arch_pre_smp_init(void)
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113 | {
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114 | }
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115 |
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116 |
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117 | /** Performs arm32 specific tasks needed after the multiprocessing is
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118 | * initialized.
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119 | *
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120 | * Currently the function is empty because SMP is not supported.
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121 | */
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122 | void arch_post_smp_init(void)
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123 | {
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124 | machine_input_init();
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125 | }
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126 |
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127 |
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128 | /** Performs arm32 specific tasks needed before the new task is run. */
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129 | void before_task_runs_arch(void)
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130 | {
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131 | }
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132 |
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133 |
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134 | /** Performs arm32 specific tasks needed before the new thread is scheduled.
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135 | *
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136 | * It sets supervisor_sp.
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137 | */
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138 | void before_thread_runs_arch(void)
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139 | {
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140 | uint8_t *stck;
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141 |
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142 | stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
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143 | supervisor_sp = (uintptr_t) stck;
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144 | }
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145 |
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146 | /** Performs arm32 specific tasks before a thread stops running.
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147 | *
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148 | * Currently the function is empty.
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149 | */
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150 | void after_thread_ran_arch(void)
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151 | {
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152 | }
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153 |
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154 | /** Halts CPU. */
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155 | void cpu_halt(void)
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156 | {
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157 | machine_cpu_halt();
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158 | }
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159 |
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160 | /** Reboot. */
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161 | void arch_reboot()
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162 | {
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163 | /* not implemented */
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164 | while (1);
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165 | }
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166 |
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167 | /** Construct function pointer
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168 | *
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169 | * @param fptr function pointer structure
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170 | * @param addr function address
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171 | * @param caller calling function address
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172 | *
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173 | * @return address of the function pointer
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174 | *
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175 | */
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176 | void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
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177 | {
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178 | return addr;
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179 | }
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180 |
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181 | /** @}
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182 | */
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