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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 <sysinfo/sysinfo.h>
  41. #include <console/console.h>
  42. #include <ddi/irq.h>
  43. #include <print.h>
  44. #include <config.h>
  45. #include <interrupt.h>
  46. #include <arch/regutils.h>
  47. #include <userspace.h>
  48. #include <macros.h>
  49. #include <string.h>
  50.  
  51. #ifdef MACHINE_testarm
  52.     #include <arch/mach/testarm/testarm.h>
  53. #endif
  54.  
  55. #ifdef MACHINE_integratorcp
  56.     #include <arch/mach/integratorcp/integratorcp.h>
  57. #endif
  58.  
  59.  
  60. /** Performs arm32-specific initialization before main_bsp() is called. */
  61. void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
  62. {
  63.     unsigned int i;
  64.    
  65.     init.cnt = bootinfo->cnt;
  66.    
  67.     for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); ++i) {
  68.         init.tasks[i].addr = bootinfo->tasks[i].addr;
  69.         init.tasks[i].size = bootinfo->tasks[i].size;
  70.         str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
  71.             bootinfo->tasks[i].name);
  72.     }
  73. }
  74.  
  75. /** Performs arm32 specific initialization before mm is initialized. */
  76. void arch_pre_mm_init(void)
  77. {
  78.     /* It is not assumed by default */
  79.     interrupts_disable();
  80. }
  81.  
  82. /** Performs arm32 specific initialization afterr mm is initialized. */
  83. void arch_post_mm_init(void)
  84. {
  85.     machine_init();
  86.    
  87.     /* Initialize exception dispatch table */
  88.     exception_init();
  89.     interrupt_init();
  90.    
  91. #ifdef CONFIG_FB
  92.     machine_fb_init();
  93. #else
  94. #ifdef CONFIG_ARM_PRN
  95.     machine_output_init();
  96. #endif /* CONFIG_ARM_PRN */
  97. #endif /* CONFIG_FB */
  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.     machine_input_init();
  127. }
  128.  
  129.  
  130. /** Performs arm32 specific tasks needed before the new task is run. */
  131. void before_task_runs_arch(void)
  132. {
  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.     tlb_invalidate_all();
  145.     stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
  146.     supervisor_sp = (uintptr_t) stck;
  147. }
  148.  
  149. /** Performs arm32 specific tasks before a thread stops running.
  150.  *
  151.  * Currently the function is empty.
  152.  */
  153. void after_thread_ran_arch(void)
  154. {
  155. }
  156.  
  157. /** Halts CPU. */
  158. void cpu_halt(void)
  159. {
  160.     machine_cpu_halt();
  161. }
  162.  
  163. /** Reboot. */
  164. void arch_reboot()
  165. {
  166.     /* not implemented */
  167.     while (1);
  168. }
  169.  
  170. /** Construct function pointer
  171.  *
  172.  * @param fptr   function pointer structure
  173.  * @param addr   function address
  174.  * @param caller calling function address
  175.  *
  176.  * @return address of the function pointer
  177.  *
  178.  */
  179. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  180. {
  181.     return addr;
  182. }
  183.  
  184. /** Acquire console back for kernel. */
  185. void arch_grab_console(void)
  186. {
  187.     machine_grab_console();
  188. #ifdef CONFIG_FB
  189.     fb_redraw();
  190. #endif
  191. }
  192.  
  193. /** Return console to userspace. */
  194. void arch_release_console(void)
  195. {
  196.     machine_release_console();
  197. }
  198.  
  199. /** @}
  200.  */
  201.