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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 <genarch/fb/fb.h>
  39. #include <genarch/fb/visuals.h>
  40. #include <genarch/drivers/dsrln/dsrlnin.h>
  41. #include <genarch/drivers/dsrln/dsrlnout.h>
  42. #include <genarch/srln/srln.h>
  43. #include <sysinfo/sysinfo.h>
  44. #include <console/console.h>
  45. #include <ddi/irq.h>
  46. #include <arch/machine.h>
  47. #include <print.h>
  48. #include <config.h>
  49. #include <interrupt.h>
  50. #include <arch/regutils.h>
  51. #include <userspace.h>
  52. #include <macros.h>
  53. #include <string.h>
  54.  
  55. /** Performs arm32-specific initialization before main_bsp() is called. */
  56. void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
  57. {
  58.     unsigned int i;
  59.    
  60.     init.cnt = bootinfo->cnt;
  61.    
  62.     for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); ++i) {
  63.         init.tasks[i].addr = bootinfo->tasks[i].addr;
  64.         init.tasks[i].size = bootinfo->tasks[i].size;
  65.         str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
  66.             bootinfo->tasks[i].name);
  67.     }
  68. }
  69.  
  70. /** Performs arm32 specific initialization before mm is initialized. */
  71. void arch_pre_mm_init(void)
  72. {
  73.     /* It is not assumed by default */
  74.     interrupts_disable();
  75. }
  76.  
  77. /** Performs arm32 specific initialization afterr mm is initialized. */
  78. void arch_post_mm_init(void)
  79. {
  80.     machine_init();
  81.    
  82.     /* Initialize exception dispatch table */
  83.     exception_init();
  84.     interrupt_init();
  85.    
  86. #ifdef CONFIG_FB
  87.     machine_fb_init();
  88. #else
  89. #ifdef CONFIG_ARM_PRN
  90.     machine_srlnout_init();
  91. #endif /* CONFIG_ARM_PRN */
  92. #endif /* CONFIG_FB */
  93. }
  94.  
  95. /** Performs arm32 specific tasks needed after cpu is initialized.
  96.  *
  97.  * Currently the function is empty.
  98.  */
  99. void arch_post_cpu_init(void)
  100. {
  101. }
  102.  
  103.  
  104. /** Performs arm32 specific tasks needed before the multiprocessing is
  105.  * initialized.
  106.  *
  107.  * Currently the function is empty because SMP is not supported.
  108.  */
  109. void arch_pre_smp_init(void)
  110. {
  111. }
  112.  
  113.  
  114. /** Performs arm32 specific tasks needed after the multiprocessing is
  115.  * initialized.
  116.  *
  117.  * Currently the function is empty because SMP is not supported.
  118.  */
  119. void arch_post_smp_init(void)
  120. {
  121.     machine_input_init();
  122. }
  123.  
  124.  
  125. /** Performs arm32 specific tasks needed before the new task is run. */
  126. void before_task_runs_arch(void)
  127. {
  128. }
  129.  
  130.  
  131. /** Performs arm32 specific tasks needed before the new thread is scheduled.
  132.  *
  133.  * It sets supervisor_sp.
  134.  */
  135. void before_thread_runs_arch(void)
  136. {
  137.     uint8_t *stck;
  138.    
  139.     tlb_invalidate_all();
  140.     stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
  141.     supervisor_sp = (uintptr_t) stck;
  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. /** Halts CPU. */
  153. void cpu_halt(void)
  154. {
  155.     machine_cpu_halt();
  156. }
  157.  
  158. /** Reboot. */
  159. void arch_reboot()
  160. {
  161.     /* not implemented */
  162.     while (1);
  163. }
  164.  
  165. /** Construct function pointer
  166.  *
  167.  * @param fptr   function pointer structure
  168.  * @param addr   function address
  169.  * @param caller calling function address
  170.  *
  171.  * @return address of the function pointer
  172.  *
  173.  */
  174. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  175. {
  176.     return addr;
  177. }
  178.  
  179. /** Acquire console back for kernel. */
  180. void arch_grab_console(void)
  181. {
  182.     machine_grab_console();
  183. #ifdef CONFIG_FB
  184.     fb_redraw();
  185. #endif
  186. }
  187.  
  188. /** Return console to userspace. */
  189. void arch_release_console(void)
  190. {
  191.     machine_release_console();
  192. }
  193.  
  194. /** @}
  195.  */
  196.