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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  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 sparc64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch/console.h>
  36. #include <arch/types.h>
  37. #include <typedefs.h>
  38. #include <genarch/fb/fb.h>
  39. #include <arch/drivers/fb.h>
  40. #include <arch/drivers/i8042.h>
  41. #include <genarch/i8042/i8042.h>
  42. #include <genarch/ofw/ofw.h>
  43. #include <console/chardev.h>
  44. #include <console/console.h>
  45. #include <arch/asm.h>
  46. #include <arch/register.h>
  47. #include <proc/thread.h>
  48. #include <synch/mutex.h>
  49. #include <arch/mm/tlb.h>
  50.  
  51. #define KEYBOARD_POLL_PAUSE 50000   /* 50ms */
  52.  
  53. static void ofw_sparc64_putchar(chardev_t *d, const char ch);
  54. static char ofw_sparc64_getchar(chardev_t *d);
  55. static void ofw_sparc64_suspend(chardev_t *d);
  56. static void ofw_sparc64_resume(chardev_t *d);
  57.  
  58. mutex_t canwork;
  59.  
  60. static volatile int ofw_console_active;
  61.  
  62. static chardev_t ofw_sparc64_console;
  63. static chardev_operations_t ofw_sparc64_console_ops = {
  64.     .write = ofw_sparc64_putchar,
  65.     .read = ofw_sparc64_getchar,
  66.     .resume = ofw_sparc64_resume,
  67.     .suspend = ofw_sparc64_suspend
  68. };
  69.  
  70. /** Initialize kernel console to use OpenFirmware services. */
  71. void ofw_sparc64_console_init(void)
  72. {
  73.     chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops);
  74.     stdin = &ofw_sparc64_console;
  75.     stdout = &ofw_sparc64_console;
  76.     mutex_initialize(&canwork);
  77.     ofw_console_active = 1;
  78. }
  79.  
  80. /** Initialize kernel console to use framebuffer and keyboard directly. */
  81. void standalone_sparc64_console_init(void)
  82. {
  83.     ofw_console_active = 0;
  84.     stdin = NULL;
  85.  
  86.     kbd_init();
  87.     fb_init(FB_PHYS_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH, FB_X_RES * FB_COLOR_DEPTH / 8);
  88. }
  89.  
  90. /** Write one character using OpenFirmware.
  91.  *
  92.  * @param d Character device (ignored).
  93.  * @param ch Character to be written.
  94.  */
  95. void ofw_sparc64_putchar(chardev_t *d, const char ch)
  96. {
  97.     pstate_reg_t pstate;
  98.  
  99.     /*
  100.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  101.      */
  102.     pstate.value = pstate_read();
  103.     pstate.am = true;
  104.     pstate_write(pstate.value);
  105.  
  106.     if (ch == '\n')
  107.         ofw_putchar('\r');
  108.     ofw_putchar(ch);
  109.    
  110.     pstate.am = false;
  111.     pstate_write(pstate.value);
  112. }
  113.  
  114. /** Read one character using OpenFirmware.
  115.  *
  116.  * The call is non-blocking.
  117.  *
  118.  * @param d Character device (ignored).
  119.  * @return Character read or zero if no character was read.
  120.  */
  121. char ofw_sparc64_getchar(chardev_t *d)
  122. {
  123.     char ch;
  124.     pstate_reg_t pstate;
  125.  
  126.     /*
  127.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  128.      */
  129.     pstate.value = pstate_read();
  130.     pstate.am = true;
  131.     pstate_write(pstate.value);
  132.  
  133.     ch = ofw_getchar();
  134.    
  135.     pstate.am = false;
  136.     pstate_write(pstate.value);
  137.    
  138.     return ch;
  139. }
  140.  
  141. void ofw_sparc64_suspend(chardev_t *d)
  142. {
  143.     mutex_lock(&canwork);
  144. }
  145.  
  146. void ofw_sparc64_resume(chardev_t *d)
  147. {
  148.     mutex_unlock(&canwork);
  149. }
  150.  
  151. /** Kernel thread for pushing characters read from OFW to input buffer.
  152.  *
  153.  * @param arg Ignored.
  154.  */
  155. void kofwinput(void *arg)
  156. {
  157.  
  158.     while (ofw_console_active) {
  159.         char ch = 0;
  160.        
  161.         mutex_lock(&canwork);
  162.         mutex_unlock(&canwork);
  163.        
  164.         ch = ofw_sparc64_getchar(NULL);
  165.         if (ch) {
  166.             if (ch == '\r')
  167.                 ch = '\n';
  168.             chardev_push_character(&ofw_sparc64_console, ch);
  169.         }
  170.         thread_usleep(KEYBOARD_POLL_PAUSE);
  171.     }
  172. }
  173.  
  174. /** Kernel thread for polling keyboard.
  175.  *
  176.  * @param arg Ignored.
  177.  */
  178. void kkbdpoll(void *arg)
  179. {
  180.     while (1) {
  181.         i8042_poll();      
  182.         thread_usleep(KEYBOARD_POLL_PAUSE);
  183.     }
  184. }
  185.  
  186. /** @}
  187.  */
  188.