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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(KBD_VIRT_ADDRESS, KBD_PHYS_ADDRESS, PAGESIZE_8K, true, false);
  81.  
  82.     fb_init(FB_PHYS_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH, FB_X_RES * FB_COLOR_DEPTH / 8);
  83.     i8042_init();
  84. }
  85.  
  86. /** Write one character using OpenFirmware.
  87.  *
  88.  * @param d Character device (ignored).
  89.  * @param ch Character to be written.
  90.  */
  91. void ofw_sparc64_putchar(chardev_t *d, const char ch)
  92. {
  93.     pstate_reg_t pstate;
  94.  
  95.     /*
  96.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  97.      */
  98.     pstate.value = pstate_read();
  99.     pstate.am = true;
  100.     pstate_write(pstate.value);
  101.  
  102.     if (ch == '\n')
  103.         ofw_putchar('\r');
  104.     ofw_putchar(ch);
  105.    
  106.     pstate.am = false;
  107.     pstate_write(pstate.value);
  108. }
  109.  
  110. /** Read one character using OpenFirmware.
  111.  *
  112.  * The call is non-blocking.
  113.  *
  114.  * @param d Character device (ignored).
  115.  * @return Character read or zero if no character was read.
  116.  */
  117. char ofw_sparc64_getchar(chardev_t *d)
  118. {
  119.     char ch;
  120.     pstate_reg_t pstate;
  121.  
  122.     /*
  123.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  124.      */
  125.     pstate.value = pstate_read();
  126.     pstate.am = true;
  127.     pstate_write(pstate.value);
  128.  
  129.     ch = ofw_getchar();
  130.    
  131.     pstate.am = false;
  132.     pstate_write(pstate.value);
  133.    
  134.     return ch;
  135. }
  136.  
  137. void ofw_sparc64_suspend(chardev_t *d)
  138. {
  139.     mutex_lock(&canwork);
  140. }
  141.  
  142. void ofw_sparc64_resume(chardev_t *d)
  143. {
  144.     mutex_unlock(&canwork);
  145. }
  146.  
  147. /** Kernel thread for pushing characters read from OFW to input buffer.
  148.  *
  149.  * @param arg Ignored.
  150.  */
  151. void kofwinput(void *arg)
  152. {
  153.  
  154.     while (ofw_console_active) {
  155.         char ch = 0;
  156.        
  157.         mutex_lock(&canwork);
  158.         mutex_unlock(&canwork);
  159.        
  160.         ch = ofw_sparc64_getchar(NULL);
  161.         if (ch) {
  162.             if (ch == '\r')
  163.                 ch = '\n';
  164.             chardev_push_character(&ofw_sparc64_console, ch);
  165.         }
  166.         thread_usleep(KEYBOARD_POLL_PAUSE);
  167.     }
  168. }
  169.  
  170. /** Kernel thread for polling keyboard.
  171.  *
  172.  * @param arg Ignored.
  173.  */
  174. void kkbdpoll(void *arg)
  175. {
  176.     while (1) {
  177.         i8042_poll();      
  178.         thread_usleep(KEYBOARD_POLL_PAUSE);
  179.     }
  180. }
  181.