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  1. /*
  2.  * Copyright (C) 2005 Martin Decky
  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. /**
  30.  * @file
  31.  * @brief   Architecture dependent parts of OpenFirmware interface.
  32.  */
  33.  
  34. #include <ofwarch.h>  
  35. #include <ofw.h>
  36. #include <printf.h>
  37. #include <string.h>
  38. #include "main.h"
  39.  
  40. int bpp2align[] = {
  41.     [0] = 0,        /** Invalid bpp. */
  42.     [1] = 1,        /** 8bpp is not aligned. */
  43.     [2] = 2,        /** 16bpp is naturally aligned. */
  44.     [3] = 4,        /** 24bpp is aligned on 4 byte boundary. */
  45.     [4] = 4,        /** 32bpp is naturally aligned. */
  46. };
  47.  
  48. void write(const char *str, const int len)
  49. {
  50.     int i;
  51.    
  52.     for (i = 0; i < len; i++) {
  53.         if (str[i] == '\n')
  54.             ofw_write("\r", 1);
  55.         ofw_write(&str[i], 1);
  56.     }
  57. }
  58.  
  59. int ofw_translate_failed(ofw_arg_t flag)
  60. {
  61.     return flag != -1;
  62. }
  63.  
  64. int ofw_keyboard(keyboard_t *keyboard)
  65. {
  66.     char device_name[BUF_SIZE];
  67.     uint32_t virtaddr;
  68.        
  69.     if (ofw_get_property(ofw_aliases, "keyboard", device_name, sizeof(device_name)) <= 0)
  70.         return false;
  71.                    
  72.     phandle device = ofw_find_device(device_name);
  73.     if (device == -1)
  74.         return false;
  75.                                    
  76.     if (ofw_get_property(device, "address", &virtaddr, sizeof(virtaddr)) <= 0)
  77.         return false;
  78.                                                
  79.     if (!(keyboard->addr = ofw_translate((void *) ((uintptr_t) virtaddr))))
  80.         return false;
  81.  
  82.     return true;
  83. }
  84.  
  85. int ofw_cpu(cpu_t *cpu)
  86. {
  87.     char type_name[BUF_SIZE];
  88.  
  89.     phandle node;
  90.     node = ofw_get_child_node(ofw_root);
  91.     if (node == 0 || node == -1) {
  92.         printf("Could not find any child nodes of the root node.\n");
  93.         return;
  94.     }
  95.    
  96.     for (; node != 0 && node != -1; node = ofw_get_peer_node(node)) {
  97.         if (ofw_get_property(node, "device_type", type_name, sizeof(type_name)) > 0) {
  98.             if (strcmp(type_name, "cpu") == 0) {
  99.                 uint32_t mhz;
  100.                
  101.                 if (ofw_get_property(node, "clock-frequency", &mhz, sizeof(mhz)) <= 0)
  102.                     continue;
  103.                    
  104.                 cpu->clock_frequency = mhz;
  105.                 return 1;
  106.             }
  107.         }
  108.     };
  109.  
  110.     return 0;
  111. }
  112.