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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 <genarch/ofw/ofw.h>
  31. #include <console/chardev.h>
  32. #include <console/console.h>
  33. #include <arch/asm.h>
  34. #include <arch/register.h>
  35.  
  36. static void ofw_sparc64_putchar(chardev_t *d, const char ch);
  37.  
  38. static chardev_t ofw_sparc64_console;
  39. static chardev_operations_t ofw_sparc64_console_ops = {
  40.     .write = ofw_sparc64_putchar
  41. };
  42.  
  43. void ofw_sparc64_console_init(void)
  44. {
  45.     chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops);
  46.     stdout = &ofw_sparc64_console;
  47. }
  48.  
  49. /** Print one character.
  50.  *
  51.  * @param ch Character to be printed.
  52.  */
  53. void ofw_sparc64_putchar(chardev_t *d, const char ch)
  54. {
  55.     pstate_reg_t pstate;
  56.  
  57.     /*
  58.      * 32-bit OpenFirmware depends on PSTATE.AM bit set.
  59.      */
  60.     pstate.value = pstate_read();
  61.     pstate.am = true;
  62.     pstate_write(pstate.value);
  63.  
  64.     if (ch == '\n')
  65.         ofw_putchar('\r');
  66.     ofw_putchar(ch);
  67.    
  68.     pstate.am = false;
  69.     pstate_write(pstate.value);
  70. }
  71.