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  1. /*
  2.  * Copyright (c) 2005 Martin Decky
  3.  * Copyright (c) 2006 Jakub Jermar
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  *
  10.  * - Redistributions of source code must retain the above copyright
  11.  *   notice, this list of conditions and the following disclaimer.
  12.  * - Redistributions in binary form must reproduce the above copyright
  13.  *   notice, this list of conditions and the following disclaimer in the
  14.  *   documentation and/or other materials provided with the distribution.
  15.  * - The name of the author may not be used to endorse or promote products
  16.  *   derived from this software without specific prior written permission.
  17.  *
  18.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28.  */
  29.  
  30. /**
  31.  * @file
  32.  * @brief   Architecture dependent parts of OpenFirmware interface.
  33.  */
  34.  
  35. #include <ofwarch.h>  
  36. #include <ofw.h>
  37. #include <printf.h>
  38. #include <string.h>
  39. #include <register.h>
  40. #include "main.h"
  41. #include "asm.h"
  42.  
  43. void write(const char *str, const int len)
  44. {
  45.     int i;
  46.    
  47.     for (i = 0; i < len; i++) {
  48.         if (str[i] == '\n')
  49.             ofw_write("\r", 1);
  50.         ofw_write(&str[i], 1);
  51.     }
  52. }
  53.  
  54. int ofw_translate_failed(ofw_arg_t flag)
  55. {
  56.     return flag != -1;
  57. }
  58.  
  59. int ofw_cpu(void)
  60. {
  61.     char type_name[BUF_SIZE];
  62.  
  63.     phandle node;
  64.     node = ofw_get_child_node(ofw_root);
  65.     if (node == 0 || node == -1) {
  66.         printf("Could not find any child nodes of the root node.\n");
  67.         return 0;
  68.     }
  69.    
  70.     uint64_t current_mid;
  71.    
  72.     asm volatile ("ldxa [%1] %2, %0\n" : "=r" (current_mid) : "r" (0), "i" (ASI_UPA_CONFIG));
  73.     current_mid >>= UPA_CONFIG_MID_SHIFT;
  74.     current_mid &= UPA_CONFIG_MID_MASK;
  75.  
  76.     int cpus;
  77.    
  78.     for (cpus = 0; node != 0 && node != -1; node = ofw_get_peer_node(node), cpus++) {
  79.         if (ofw_get_property(node, "device_type", type_name, sizeof(type_name)) > 0) {
  80.             if (strcmp(type_name, "cpu") == 0) {
  81.                 uint32_t mid;
  82.                
  83.                 if (ofw_get_property(node, "upa-portid", &mid, sizeof(mid)) <= 0)
  84.                     continue;
  85.                    
  86.                 if (current_mid != mid) {
  87.                     /*
  88.                      * Start secondary processor.
  89.                      */
  90.                     (void) ofw_call("SUNW,start-cpu", 3, 1, NULL, node,
  91.                          KERNEL_VIRTUAL_ADDRESS,
  92.                          bootinfo.physmem_start | AP_PROCESSOR);
  93.                 }
  94.             }
  95.         }
  96.     }
  97.  
  98.     return cpus;
  99. }
  100.  
  101. /** Get physical memory starting address.
  102.  *
  103.  * @param start Pointer to variable where the physical memory starting
  104.  *      address will be stored.
  105.  *
  106.  * @return Non-zero on succes, zero on failure.
  107.  */
  108. int ofw_get_physmem_start(uintptr_t *start)
  109. {
  110.     uint32_t memreg[4];
  111.  
  112.     if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0)
  113.         return 0;
  114.  
  115.     *start = (((uint64_t) memreg[0]) << 32) | memreg[1];
  116.     return 1;
  117. }
  118.  
  119.