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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. #include <arch.h>
  37. #include <config.h>
  38. #include <arch/console.h>
  39. #include <ddi/device.h>
  40. #include <genarch/fb/fb.h>
  41. #include <genarch/fb/visuals.h>
  42. #include <ddi/irq.h>
  43. #include <arch/debug/print.h>
  44. #include <print.h>
  45. #include <config.h>
  46. #include <interrupt.h>
  47. #include <arch/regutils.h>
  48. #include <arch/machine.h>
  49. #include <userspace.h>
  50. #include <macros.h>
  51.  
  52. /** Performs arm32 specific initialization before main_bsp() is called. */
  53. void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
  54. {
  55.     unsigned int i;
  56.    
  57.     init.cnt = bootinfo->cnt;
  58.    
  59.     for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); ++i) {
  60.         init.tasks[i].addr = bootinfo->tasks[i].addr;
  61.         init.tasks[i].size = bootinfo->tasks[i].size;
  62.     }
  63. }
  64.  
  65. /** Performs arm32 specific initialization before mm is initialized. */
  66. void arch_pre_mm_init(void)
  67. {
  68.     /* It is not assumed by default */
  69.     interrupts_disable();
  70. }
  71.  
  72. /** Performs arm32 specific initialization afterr mm is initialized. */
  73. void arch_post_mm_init(void)
  74. {
  75.     machine_hw_map_init();
  76.  
  77.     /* Initialize exception dispatch table */
  78.     exception_init();
  79.  
  80.     interrupt_init();
  81.    
  82.     console_init(device_assign_devno());
  83.  
  84. #ifdef CONFIG_FB
  85.     fb_properties_t prop = {
  86.         .addr = machine_get_fb_address(),
  87.         .offset = 0,
  88.         .x = 640,
  89.         .y = 480,
  90.         .scan = 1920,
  91.         .visual = VISUAL_BGR_8_8_8,
  92.     };
  93.     fb_init(&prop);
  94. #endif
  95. }
  96.  
  97. /** Performs arm32 specific tasks needed after cpu is initialized.
  98.  *
  99.  * Currently the function is empty.
  100.  */
  101. void arch_post_cpu_init(void)
  102. {
  103. }
  104.  
  105.  
  106. /** Performs arm32 specific tasks needed before the multiprocessing is
  107.  * initialized.
  108.  *
  109.  * Currently the function is empty because SMP is not supported.
  110.  */
  111. void arch_pre_smp_init(void)
  112. {
  113. }
  114.  
  115.  
  116. /** Performs arm32 specific tasks needed after the multiprocessing is
  117.  * initialized.
  118.  *
  119.  * Currently the function is empty because SMP is not supported.
  120.  */
  121. void arch_post_smp_init(void)
  122. {
  123. }
  124.  
  125.  
  126. /** Performs arm32 specific tasks needed before the new task is run. */
  127. void before_task_runs_arch(void)
  128. {
  129.     tlb_invalidate_all();
  130. }
  131.  
  132.  
  133. /** Performs arm32 specific tasks needed before the new thread is scheduled.
  134.  *
  135.  * It sets supervisor_sp.
  136.  */
  137. void before_thread_runs_arch(void)
  138. {
  139.     uint8_t *stck;
  140.    
  141.     stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
  142.     supervisor_sp = (uintptr_t) stck;
  143. }
  144.  
  145. /** Performs arm32 specific tasks before a thread stops running.
  146.  *
  147.  * Currently the function is empty.
  148.  */
  149. void after_thread_ran_arch(void)
  150. {
  151. }
  152.  
  153. /** Halts CPU. */
  154. void cpu_halt(void)
  155. {
  156.     machine_cpu_halt();
  157. }
  158.  
  159. /** Reboot. */
  160. void arch_reboot()
  161. {
  162.     /* not implemented */
  163.     while (1);
  164. }
  165.  
  166. /** Construct function pointer
  167.  *
  168.  * @param fptr   function pointer structure
  169.  * @param addr   function address
  170.  * @param caller calling function address
  171.  *
  172.  * @return address of the function pointer
  173.  *
  174.  */
  175. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  176. {
  177.     return addr;
  178. }
  179.  
  180. /** @}
  181.  */
  182.