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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. extern uint8_t subarchitecture;
  44.  
  45. void write(const char *str, const int len)
  46. {
  47.     int i;
  48.    
  49.     for (i = 0; i < len; i++) {
  50.         if (str[i] == '\n')
  51.             ofw_write("\r", 1);
  52.         ofw_write(&str[i], 1);
  53.     }
  54. }
  55.  
  56. int ofw_translate_failed(ofw_arg_t flag)
  57. {
  58.     return flag != -1;
  59. }
  60.  
  61. static int wake_cpus_in_node(phandle child, uint64_t current_mid)
  62. {
  63.     int cpus;
  64.     char type_name[BUF_SIZE];
  65.    
  66.     for (cpus = 0; child != 0 && child != -1;
  67.         child = ofw_get_peer_node(child), cpus++) {
  68.         if (ofw_get_property(child, "device_type", type_name,
  69.             sizeof(type_name)) > 0) {
  70.             if (strcmp(type_name, "cpu") == 0) {
  71.                 uint32_t mid;
  72.                
  73.                 /*
  74.                  * "upa-portid" for US, "portid" for US-III,
  75.                  * "cpuid" for US-IV*
  76.                  */
  77.                 if (ofw_get_property(
  78.                     child, "upa-portid",
  79.                     &mid, sizeof(mid)) <= 0
  80.                     && ofw_get_property(child, "portid",
  81.                     &mid, sizeof(mid)) <= 0
  82.                     && ofw_get_property(child, "cpuid",
  83.                     &mid, sizeof(mid)) <= 0)
  84.                     continue;
  85.                    
  86.                 if (current_mid != mid) {
  87.                     /*
  88.                      * Start secondary processor.
  89.                      */
  90.                     printf("Starting CPU: %d.\n", mid);
  91.                     (void) ofw_call("SUNW,start-cpu", 3, 1,
  92.                         NULL, child, KERNEL_VIRTUAL_ADDRESS,
  93.                         bootinfo.physmem_start |
  94.                         AP_PROCESSOR);
  95.                 }
  96.             }
  97.         }
  98.     }
  99.  
  100.     return cpus;
  101. }
  102.  
  103. int ofw_cpu(void)
  104. {
  105.     int cpus;
  106.     phandle node;
  107.     phandle subnode;
  108.     phandle ssm;
  109.     phandle cmp;
  110.     char name[BUF_SIZE];
  111.  
  112.     /* get the current CPU MID */
  113.     uint64_t current_mid;
  114.    
  115.     asm volatile ("ldxa [%1] %2, %0\n"
  116.         : "=r" (current_mid)
  117.         : "r" (0), "i" (ASI_ICBUS_CONFIG));
  118.     current_mid >>= ICBUS_CONFIG_MID_SHIFT;
  119.  
  120.     if (subarchitecture == SUBARCH_US) {
  121.         current_mid &= ICBUS_CONFIG_MID_MASK_US;
  122.     } else if (subarchitecture == SUBARCH_US3) {
  123.         current_mid &= ICBUS_CONFIG_MID_MASK_US3;
  124.     } else {
  125.         printf("MID format unknown for this subarchitecture.");
  126.         return 0;
  127.     }
  128.  
  129.     /* wake up CPUs */
  130.     ssm = ofw_find_device("/ssm@0,0");
  131.     if (ssm == -1) {
  132.         node = ofw_get_child_node(ofw_root);
  133.         cpus = wake_cpus_in_node(node, current_mid);
  134.     } else {
  135.         node = ofw_get_child_node(ssm);
  136.         cpus = wake_cpus_in_node(node, current_mid);
  137.         while (node != 0 && node != -1) {
  138.             if (ofw_get_property(node, "name", name,
  139.                 sizeof(name)) > 0) {
  140.                 if (strcmp(name, "cmp") == 0) {
  141.                     printf("nasel jsem dalsi CPU");
  142.                     subnode = ofw_get_child_node(node);
  143.                     cpus += wake_cpus_in_node(subnode,
  144.                         current_mid);
  145.                 }
  146.             }
  147.             node = ofw_get_peer_node(node);
  148.         }    
  149.     }
  150.    
  151.     return cpus;
  152.    
  153. }
  154.  
  155. /** Get physical memory starting address.
  156.  *
  157.  * @param start Pointer to variable where the physical memory starting
  158.  *      address will be stored.
  159.  *
  160.  * @return Non-zero on succes, zero on failure.
  161.  */
  162. int ofw_get_physmem_start(uintptr_t *start)
  163. {
  164.     uint32_t memreg[4];
  165.  
  166.     if (ofw_get_property(ofw_memory, "reg", &memreg, sizeof(memreg)) <= 0)
  167.         return 0;
  168.  
  169.     *start = (((uint64_t) memreg[0]) << 32) | memreg[1];
  170.     return 1;
  171. }
  172.  
  173.