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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. #include <arch/console.h>
  30. #include <arch/types.h>
  31. #include <typedefs.h>
  32. #include <genarch/fb/fb.h>
  33. #include <arch/drivers/fb.h>
  34. #include <arch/drivers/i8042.h>
  35. #include <genarch/i8042/i8042.h>
  36. #include <genarch/ofw/ofw.h>
  37. #include <console/chardev.h>
  38. #include <console/console.h>
  39. #include <arch/asm.h>
  40. #include <arch/register.h>
  41. #include <proc/thread.h>
  42. #include <synch/mutex.h>
  43.  
  44. #define KEYBOARD_POLL_PAUSE 50000   /* 50ms */
  45.  
  46. static void ofw_sparc64_putchar(chardev_t *d, const char ch);
  47. static char ofw_sparc64_getchar(chardev_t *d);
  48. static void ofw_sparc64_suspend(chardev_t *d);
  49. static void ofw_sparc64_resume(chardev_t *d);
  50.  
  51. mutex_t canwork;
  52.  
  53. static volatile int ofw_console_active;
  54.  
  55. static chardev_t ofw_sparc64_console;
  56. static chardev_operations_t ofw_sparc64_console_ops = {
  57.     .write = ofw_sparc64_putchar,
  58.     .read = ofw_sparc64_getchar,
  59.     .resume = ofw_sparc64_resume,
  60.     .suspend = ofw_sparc64_suspend
  61. };
  62.  
  63. /** Initialize kernel console to use OpenFirmware services. */
  64. void ofw_sparc64_console_init(void)
  65. {
  66.     chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops);
  67.     stdin = &ofw_sparc64_console;
  68.     stdout = &ofw_sparc64_console;
  69.     mutex_initialize(&canwork);
  70.     ofw_console_active = 1;
  71. }
  72.  
  73. /** Initialize kernel console to use framebuffer and keyboard directly. */
  74. void standalone_sparc64_console_init(void)
  75. {
  76.     ofw_console_active = 0;
  77.     stdin = NULL;
  78.     fb_init(FB_VIRT_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH/8);
  79.     i8042_init();
  80. }
  81.  
  82. /** Write one character using OpenFirmware.
  83.  *
  84.  * @param d Character device (ignored).
  85.  * @param ch Character to be written.
  86.  */
  87. void ofw_sparc64_putchar(chardev_t *d, const char ch)
  88. {
  89.     pstate_reg_t pstate;
  90.  
  91.     /*
  92.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  93.      */
  94.     pstate.value = pstate_read();
  95.     pstate.am = true;
  96.     pstate_write(pstate.value);
  97.  
  98.     if (ch == '\n')
  99.         ofw_putchar('\r');
  100.     ofw_putchar(ch);
  101.    
  102.     pstate.am = false;
  103.     pstate_write(pstate.value);
  104. }
  105.  
  106. /** Read one character using OpenFirmware.
  107.  *
  108.  * The call is non-blocking.
  109.  *
  110.  * @param d Character device (ignored).
  111.  * @return Character read or zero if no character was read.
  112.  */
  113. char ofw_sparc64_getchar(chardev_t *d)
  114. {
  115.     char ch;
  116.     pstate_reg_t pstate;
  117.  
  118.     /*
  119.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  120.      */
  121.     pstate.value = pstate_read();
  122.     pstate.am = true;
  123.     pstate_write(pstate.value);
  124.  
  125.     ch = ofw_getchar();
  126.    
  127.     pstate.am = false;
  128.     pstate_write(pstate.value);
  129.    
  130.     return ch;
  131. }
  132.  
  133. void ofw_sparc64_suspend(chardev_t *d)
  134. {
  135.     mutex_lock(&canwork);
  136. }
  137.  
  138. void ofw_sparc64_resume(chardev_t *d)
  139. {
  140.     mutex_unlock(&canwork);
  141. }
  142.  
  143. /** Kernel thread for pushing characters read from OFW to input buffer.
  144.  *
  145.  * @param arg Ignored.
  146.  */
  147. void kofwinput(void *arg)
  148. {
  149.  
  150.     while (ofw_console_active) {
  151.         char ch = 0;
  152.        
  153.         mutex_lock(&canwork);
  154.         mutex_unlock(&canwork);
  155.        
  156.         ch = ofw_sparc64_getchar(NULL);
  157.         if (ch) {
  158.             if (ch == '\r')
  159.                 ch = '\n';
  160.             chardev_push_character(&ofw_sparc64_console, ch);
  161.         }
  162.         thread_usleep(KEYBOARD_POLL_PAUSE);
  163.     }
  164. }
  165.  
  166. /** Kernel thread for polling keyboard.
  167.  *
  168.  * @param arg Ignored.
  169.  */
  170. void kkbdpoll(void *arg)
  171. {
  172.     while (1) {
  173.         i8042_poll();      
  174.         thread_usleep(KEYBOARD_POLL_PAUSE);
  175.     }
  176. }
  177.