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  1. /*
  2.  * Copyright (c) 2007 Michal Kebrt
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  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
  15.  *   derived from this software without specific prior written permission.
  16.  *
  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
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  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
  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
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup arm32
  30.  * @{
  31.  */
  32. /** @file
  33.  *  @brief ARM32 architecture specific functions.
  34.  */
  35.  
  36.  
  37. #include <arch.h>
  38. #include <arch/boot.h>
  39. #include <config.h>
  40. #include <arch/console.h>
  41. #include <ddi/device.h>
  42. #include <genarch/fb/fb.h>
  43. #include <genarch/fb/visuals.h>
  44. #include <ddi/irq.h>
  45. #include <arch/debug/print.h>
  46. #include <print.h>
  47. #include <config.h>
  48. #include <interrupt.h>
  49. #include <arch/regutils.h>
  50. #include <arch/machine.h>
  51. #include <userspace.h>
  52.  
  53. /** Information about loaded tasks. */
  54. bootinfo_t bootinfo;
  55.  
  56.  
  57. /** Performs arm32 specific initialization before main_bsp() is called. */
  58. void arch_pre_main(void)
  59. {
  60.     int i;
  61.  
  62.     init.cnt = bootinfo.cnt;
  63.  
  64.     for (i = 0; i < bootinfo.cnt; ++i) {
  65.         init.tasks[i].addr = bootinfo.tasks[i].addr;
  66.         init.tasks[i].size = bootinfo.tasks[i].size;
  67.     }
  68.    
  69. }
  70.  
  71.  
  72. /** Performs arm32 specific initialization before mm is initialized. */
  73. void arch_pre_mm_init(void)
  74. {
  75.     /* It is not assumed by default */
  76.     interrupts_disable();
  77. }
  78.  
  79.  
  80. /** Performs arm32 specific initialization afterr mm is initialized. */
  81. void arch_post_mm_init(void)
  82. {
  83.     machine_hw_map_init();
  84.  
  85.     /* Initialize dispatch table */
  86.     exception_init();
  87.  
  88.     interrupt_init();
  89.    
  90.     console_init(device_assign_devno());
  91.  
  92. #ifdef CONFIG_FB
  93.     fb_init(machine_get_fb_address(), 640, 480, 1920, VISUAL_RGB_8_8_8);
  94. #endif
  95. }
  96.  
  97.  
  98. /** Performs arm32 specific tasks needed after cpu is initialized.
  99.  *
  100.  * Currently the function is empty.
  101.  */
  102. void arch_post_cpu_init(void)
  103. {
  104. }
  105.  
  106.  
  107. /** Performs arm32 specific tasks needed before the multiprocessing is
  108.  * initialized.
  109.  *
  110.  * Currently the function is empty because SMP is not supported.
  111.  */
  112. void arch_pre_smp_init(void)
  113. {
  114. }
  115.  
  116.  
  117. /** Performs arm32 specific tasks needed after the multiprocessing is
  118.  * initialized.
  119.  *
  120.  * Currently the function is empty because SMP is not supported.
  121.  */
  122. void arch_post_smp_init(void)
  123. {
  124. }
  125.  
  126.  
  127. /** Performs arm32 specific tasks needed before the new task is run. */
  128. void before_task_runs_arch(void)
  129. {
  130.     tlb_invalidate_all();
  131. }
  132.  
  133.  
  134. /** Performs arm32 specific tasks needed before the new thread is scheduled.
  135.  *
  136.  * It sets supervisor_sp.
  137.  */
  138. void before_thread_runs_arch(void)
  139. {
  140.     supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE-SP_DELTA];
  141. }
  142.  
  143.  
  144. /** Performs arm32 specific tasks before a thread stops running.
  145.  *
  146.  * Currently the function is empty.
  147.  */
  148. void after_thread_ran_arch(void)
  149. {
  150. }
  151.  
  152.  
  153. /** Halts CPU. */
  154. void cpu_halt(void)
  155. {
  156.     machine_cpu_halt();
  157. }
  158.  
  159. /** @}
  160.  */
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