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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/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.         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.     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 GXemul keyboard port. Then initialize the serial line
  132.      * module and connect it to the GXemul keyboard.
  133.      */
  134.     dsrlnin_instance_t *dsrlnin_instance
  135.         = dsrlnin_init((dsrlnin_t *) gxemul_kbd, GXEMUL_KBD_IRQ);
  136.     if (dsrlnin_instance) {
  137.         srln_instance_t *srln_instance = srln_init();
  138.         if (srln_instance) {
  139.             indev_t *sink = stdin_wire();
  140.             indev_t *srln = srln_wire(srln_instance, sink);
  141.             dsrlnin_wire(dsrlnin_instance, srln);
  142.         }
  143.     }
  144.    
  145.     /*
  146.      * This is the necessary evil until the userspace driver is entirely
  147.      * self-sufficient.
  148.      */
  149.     sysinfo_set_item_val("kbd", NULL, true);
  150.     sysinfo_set_item_val("kbd.inr", NULL, GXEMUL_KBD_IRQ);
  151.     sysinfo_set_item_val("kbd.address.virtual", NULL, (unative_t) gxemul_kbd);
  152. #endif
  153. }
  154.  
  155.  
  156. /** Performs arm32 specific tasks needed before the new task is run. */
  157. void before_task_runs_arch(void)
  158. {
  159.     tlb_invalidate_all();
  160. }
  161.  
  162.  
  163. /** Performs arm32 specific tasks needed before the new thread is scheduled.
  164.  *
  165.  * It sets supervisor_sp.
  166.  */
  167. void before_thread_runs_arch(void)
  168. {
  169.     uint8_t *stck;
  170.    
  171.     stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
  172.     supervisor_sp = (uintptr_t) stck;
  173. }
  174.  
  175. /** Performs arm32 specific tasks before a thread stops running.
  176.  *
  177.  * Currently the function is empty.
  178.  */
  179. void after_thread_ran_arch(void)
  180. {
  181. }
  182.  
  183. /** Halts CPU. */
  184. void cpu_halt(void)
  185. {
  186.     *((char *) (gxemul_kbd + GXEMUL_HALT_OFFSET))
  187.         = 0;
  188. }
  189.  
  190. /** Reboot. */
  191. void arch_reboot()
  192. {
  193.     /* not implemented */
  194.     while (1);
  195. }
  196.  
  197. /** Construct function pointer
  198.  *
  199.  * @param fptr   function pointer structure
  200.  * @param addr   function address
  201.  * @param caller calling function address
  202.  *
  203.  * @return address of the function pointer
  204.  *
  205.  */
  206. void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
  207. {
  208.     return addr;
  209. }
  210.  
  211. /** Acquire console back for kernel. */
  212. void arch_grab_console(void)
  213. {
  214. #ifdef CONFIG_FB
  215.     fb_redraw();
  216. #endif
  217. }
  218.  
  219. /** Return console to userspace. */
  220. void arch_release_console(void)
  221. {
  222. }
  223.  
  224. /** @}
  225.  */
  226.