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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 <genarch/fb/fb.h>
  40. #include <genarch/fb/visuals.h>
  41. #include <genarch/drivers/dsrln/dsrlnin.h>
  42. #include <genarch/drivers/dsrln/dsrlnout.h>
  43. #include <genarch/srln/srln.h>
  44. #include <sysinfo/sysinfo.h>
  45. #include <ddi/irq.h>
  46. #include <arch/drivers/gxemul.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.         strncpy(init.tasks[i].name, bootinfo->tasks[i].name,
  66.             CONFIG_TASK_NAME_BUFLEN);
  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.     gxemul_init();
  81.    
  82.     /* Initialize exception dispatch table */
  83.     exception_init();
  84.     interrupt_init();
  85.    
  86. #ifdef CONFIG_FB
  87.     fb_properties_t prop = {
  88.         .addr = GXEMUL_FB_ADDRESS,
  89.         .offset = 0,
  90.         .x = 640,
  91.         .y = 480,
  92.         .scan = 1920,
  93.         .visual = VISUAL_BGR_8_8_8,
  94.     };
  95.     fb_init(&prop);
  96. #else
  97. #ifdef CONFIG_ARM_PRN
  98.     dsrlnout_init((ioport8_t *) gxemul_kbd);
  99. #endif /* CONFIG_ARM_PRN */
  100. #endif /* CONFIG_FB */
  101. }
  102.  
  103. /** Performs arm32 specific tasks needed after cpu is initialized.
  104.  *
  105.  * Currently the function is empty.
  106.  */
  107. void arch_post_cpu_init(void)
  108. {
  109. }
  110.  
  111.  
  112. /** Performs arm32 specific tasks needed before the multiprocessing is
  113.  * initialized.
  114.  *
  115.  * Currently the function is empty because SMP is not supported.
  116.  */
  117. void arch_pre_smp_init(void)
  118. {
  119. }
  120.  
  121.  
  122. /** Performs arm32 specific tasks needed after the multiprocessing is
  123.  * initialized.
  124.  *
  125.  * Currently the function is empty because SMP is not supported.
  126.  */
  127. void arch_post_smp_init(void)
  128. {
  129. #ifdef CONFIG_ARM_KBD
  130.     /*
  131.      * Initialize the msim/GXemul keyboard port. Then initialize the serial line
  132.      * module and connect it to the msim/GXemul keyboard. Enable keyboard interrupts.
  133.      */
  134.     indev_t *kbrdin = dsrlnin_init((dsrlnin_t *) gxemul_kbd, GXEMUL_KBD_IRQ);
  135.     if (kbrdin)
  136.         srln_init(kbrdin);
  137.    
  138.     /*
  139.      * This is the necessary evil until the userspace driver is entirely
  140.      * self-sufficient.
  141.      */
  142.     sysinfo_set_item_val("kbd", NULL, true);
  143.     sysinfo_set_item_val("kbd.inr", NULL, GXEMUL_KBD_IRQ);
  144.     sysinfo_set_item_val("kbd.address.virtual", NULL, (unative_t) gxemul_kbd);
  145. #endif
  146. }
  147.  
  148.  
  149. /** Performs arm32 specific tasks needed before the new task is run. */
  150. void before_task_runs_arch(void)
  151. {
  152.     tlb_invalidate_all();
  153. }
  154.  
  155.  
  156. /** Performs arm32 specific tasks needed before the new thread is scheduled.
  157.  *
  158.  * It sets supervisor_sp.
  159.  */
  160. void before_thread_runs_arch(void)
  161. {
  162.     uint8_t *stck;
  163.    
  164.     stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
  165.     supervisor_sp = (uintptr_t) stck;
  166. }
  167.  
  168. /** Performs arm32 specific tasks before a thread stops running.
  169.  *
  170.  * Currently the function is empty.
  171.  */
  172. void after_thread_ran_arch(void)
  173. {
  174. }
  175.  
  176. /** Halts CPU. */
  177. void cpu_halt(void)
  178. {
  179.     *((char *) (gxemul_kbd + GXEMUL_HALT_OFFSET))
  180.         = 0;
  181. }
  182.  
  183. /** Reboot. */
  184. void arch_reboot()
  185. {
  186.     /* not implemented */
  187.     while (1);
  188. }
  189.  
  190. /** Construct function pointer
  191.  *
  192.  * @param fptr   function pointer structure
  193.  * @param addr   function address
  194.  * @param caller calling function address
  195.  *
  196.  * @return address of the function pointer
  197.  *
  198.  */
  199. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  200. {
  201.     return addr;
  202. }
  203.  
  204. /** @}
  205.  */
  206.