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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. #include <arch/mm/tlb.h>
  44.  
  45. #define KEYBOARD_POLL_PAUSE 50000   /* 50ms */
  46.  
  47. static void ofw_sparc64_putchar(chardev_t *d, const char ch);
  48. static char ofw_sparc64_getchar(chardev_t *d);
  49. static void ofw_sparc64_suspend(chardev_t *d);
  50. static void ofw_sparc64_resume(chardev_t *d);
  51.  
  52. mutex_t canwork;
  53.  
  54. static volatile int ofw_console_active;
  55.  
  56. static chardev_t ofw_sparc64_console;
  57. static chardev_operations_t ofw_sparc64_console_ops = {
  58.     .write = ofw_sparc64_putchar,
  59.     .read = ofw_sparc64_getchar,
  60.     .resume = ofw_sparc64_resume,
  61.     .suspend = ofw_sparc64_suspend
  62. };
  63.  
  64. /** Initialize kernel console to use OpenFirmware services. */
  65. void ofw_sparc64_console_init(void)
  66. {
  67.     chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops);
  68.     stdin = &ofw_sparc64_console;
  69.     stdout = &ofw_sparc64_console;
  70.     mutex_initialize(&canwork);
  71.     ofw_console_active = 1;
  72. }
  73.  
  74. /** Initialize kernel console to use framebuffer and keyboard directly. */
  75. void standalone_sparc64_console_init(void)
  76. {
  77.     ofw_console_active = 0;
  78.     stdin = NULL;
  79.  
  80.     dtlb_insert_mapping(FB_VIRT_ADDRESS, FB_PHYS_ADDRESS, PAGESIZE_4M, true, false);
  81.     dtlb_insert_mapping(KBD_VIRT_ADDRESS, KBD_PHYS_ADDRESS, PAGESIZE_8K, true, false);
  82.  
  83.     fb_init(FB_VIRT_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH/8);
  84.     i8042_init();
  85. }
  86.  
  87. /** Write one character using OpenFirmware.
  88.  *
  89.  * @param d Character device (ignored).
  90.  * @param ch Character to be written.
  91.  */
  92. void ofw_sparc64_putchar(chardev_t *d, const char ch)
  93. {
  94.     pstate_reg_t pstate;
  95.  
  96.     /*
  97.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  98.      */
  99.     pstate.value = pstate_read();
  100.     pstate.am = true;
  101.     pstate_write(pstate.value);
  102.  
  103.     if (ch == '\n')
  104.         ofw_putchar('\r');
  105.     ofw_putchar(ch);
  106.    
  107.     pstate.am = false;
  108.     pstate_write(pstate.value);
  109. }
  110.  
  111. /** Read one character using OpenFirmware.
  112.  *
  113.  * The call is non-blocking.
  114.  *
  115.  * @param d Character device (ignored).
  116.  * @return Character read or zero if no character was read.
  117.  */
  118. char ofw_sparc64_getchar(chardev_t *d)
  119. {
  120.     char ch;
  121.     pstate_reg_t pstate;
  122.  
  123.     /*
  124.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  125.      */
  126.     pstate.value = pstate_read();
  127.     pstate.am = true;
  128.     pstate_write(pstate.value);
  129.  
  130.     ch = ofw_getchar();
  131.    
  132.     pstate.am = false;
  133.     pstate_write(pstate.value);
  134.    
  135.     return ch;
  136. }
  137.  
  138. void ofw_sparc64_suspend(chardev_t *d)
  139. {
  140.     mutex_lock(&canwork);
  141. }
  142.  
  143. void ofw_sparc64_resume(chardev_t *d)
  144. {
  145.     mutex_unlock(&canwork);
  146. }
  147.  
  148. /** Kernel thread for pushing characters read from OFW to input buffer.
  149.  *
  150.  * @param arg Ignored.
  151.  */
  152. void kofwinput(void *arg)
  153. {
  154.  
  155.     while (ofw_console_active) {
  156.         char ch = 0;
  157.        
  158.         mutex_lock(&canwork);
  159.         mutex_unlock(&canwork);
  160.        
  161.         ch = ofw_sparc64_getchar(NULL);
  162.         if (ch) {
  163.             if (ch == '\r')
  164.                 ch = '\n';
  165.             chardev_push_character(&ofw_sparc64_console, ch);
  166.         }
  167.         thread_usleep(KEYBOARD_POLL_PAUSE);
  168.     }
  169. }
  170.  
  171. /** Kernel thread for polling keyboard.
  172.  *
  173.  * @param arg Ignored.
  174.  */
  175. void kkbdpoll(void *arg)
  176. {
  177.     while (1) {
  178.         i8042_poll();      
  179.         thread_usleep(KEYBOARD_POLL_PAUSE);
  180.     }
  181. }
  182.