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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. #include <string.h>
  52.  
  53. /** Performs arm32-specific initialization before main_bsp() is called. */
  54. void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
  55. {
  56.     unsigned int i;
  57.    
  58.     init.cnt = bootinfo->cnt;
  59.    
  60.     for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); ++i) {
  61.         init.tasks[i].addr = bootinfo->tasks[i].addr;
  62.         init.tasks[i].size = bootinfo->tasks[i].size;
  63.         strncpy(init.tasks[i].name, bootinfo->tasks[i].name,
  64.             CONFIG_TASK_NAME_BUFLEN);
  65.     }
  66. }
  67.  
  68. /** Performs arm32 specific initialization before mm is initialized. */
  69. void arch_pre_mm_init(void)
  70. {
  71.     /* It is not assumed by default */
  72.     interrupts_disable();
  73. }
  74.  
  75. /** Performs arm32 specific initialization afterr mm is initialized. */
  76. void arch_post_mm_init(void)
  77. {
  78.     machine_hw_map_init();
  79.  
  80.     /* Initialize exception dispatch table */
  81.     exception_init();
  82.  
  83.     interrupt_init();
  84.    
  85.     console_init(device_assign_devno());
  86.  
  87. #ifdef CONFIG_FB
  88.     fb_properties_t prop = {
  89.         .addr = machine_get_fb_address(),
  90.         .offset = 0,
  91.         .x = 640,
  92.         .y = 480,
  93.         .scan = 1920,
  94.         .visual = VISUAL_BGR_8_8_8,
  95.     };
  96.     fb_init(&prop);
  97. #endif
  98. }
  99.  
  100. /** Performs arm32 specific tasks needed after cpu is initialized.
  101.  *
  102.  * Currently the function is empty.
  103.  */
  104. void arch_post_cpu_init(void)
  105. {
  106. }
  107.  
  108.  
  109. /** Performs arm32 specific tasks needed before the multiprocessing is
  110.  * initialized.
  111.  *
  112.  * Currently the function is empty because SMP is not supported.
  113.  */
  114. void arch_pre_smp_init(void)
  115. {
  116. }
  117.  
  118.  
  119. /** Performs arm32 specific tasks needed after the multiprocessing is
  120.  * initialized.
  121.  *
  122.  * Currently the function is empty because SMP is not supported.
  123.  */
  124. void arch_post_smp_init(void)
  125. {
  126. }
  127.  
  128.  
  129. /** Performs arm32 specific tasks needed before the new task is run. */
  130. void before_task_runs_arch(void)
  131. {
  132.     tlb_invalidate_all();
  133. }
  134.  
  135.  
  136. /** Performs arm32 specific tasks needed before the new thread is scheduled.
  137.  *
  138.  * It sets supervisor_sp.
  139.  */
  140. void before_thread_runs_arch(void)
  141. {
  142.     uint8_t *stck;
  143.    
  144.     stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
  145.     supervisor_sp = (uintptr_t) stck;
  146. }
  147.  
  148. /** Performs arm32 specific tasks before a thread stops running.
  149.  *
  150.  * Currently the function is empty.
  151.  */
  152. void after_thread_ran_arch(void)
  153. {
  154. }
  155.  
  156. /** Halts CPU. */
  157. void cpu_halt(void)
  158. {
  159.     machine_cpu_halt();
  160. }
  161.  
  162. /** Reboot. */
  163. void arch_reboot()
  164. {
  165.     /* not implemented */
  166.     while (1);
  167. }
  168.  
  169. /** Construct function pointer
  170.  *
  171.  * @param fptr   function pointer structure
  172.  * @param addr   function address
  173.  * @param caller calling function address
  174.  *
  175.  * @return address of the function pointer
  176.  *
  177.  */
  178. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  179. {
  180.     return addr;
  181. }
  182.  
  183. /** @}
  184.  */
  185.