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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. /** @addtogroup sparc64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #include <arch/cpu_family.h>
  36. #include <cpu.h>
  37. #include <arch.h>
  38. #include <genarch/ofw/ofw_tree.h>
  39. #include <arch/drivers/tick.h>
  40. #include <print.h>
  41. #include <arch/cpu_node.h>
  42.  
  43. /**
  44.  * Finds out the clock frequency of the current CPU.
  45.  *
  46.  * @param node  node representing the current CPU in the OFW tree
  47.  * @return  clock frequency if "node" is the current CPU and no error
  48.  *      occurs, -1 if "node" is not the current CPU or on error
  49.  */
  50. static int find_cpu_frequency(ofw_tree_node_t *node)
  51. {
  52.     ofw_tree_property_t *prop;
  53.     uint32_t mid;
  54.  
  55.     /* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */
  56.     prop = ofw_tree_getprop(node, "upa-portid");
  57.     if ((!prop) || (!prop->value))
  58.         prop = ofw_tree_getprop(node, "portid");
  59.     if ((!prop) || (!prop->value))
  60.         prop = ofw_tree_getprop(node, "cpuid");
  61.    
  62.     if (prop && prop->value) {
  63.         mid = *((uint32_t *) prop->value);
  64.         if (mid == CPU->arch.mid) {
  65.             prop = ofw_tree_getprop(node, "clock-frequency");
  66.             if (prop && prop->value) {
  67.                 return *((uint32_t *) prop->value);
  68.             }
  69.         }
  70.     }
  71.    
  72.     return -1;
  73. }
  74.  
  75. /** Perform sparc64 specific initialization of the processor structure for the
  76.  * current processor.
  77.  */
  78. void cpu_arch_init(void)
  79. {
  80.     ofw_tree_node_t *node;
  81.     uint32_t clock_frequency = 0;
  82.     icbus_config_t icbus_config;
  83.    
  84.     icbus_config.value = icbus_config_read();
  85.     CPU->arch.mid = icbus_config.mid;
  86.    
  87.     /*
  88.      * Detect processor frequency.
  89.      */
  90.     if (is_us() || is_us_iii()) {
  91.         node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu");
  92.         while (node) {
  93.             int f = find_cpu_frequency(node);
  94.             if (f != -1)
  95.                 clock_frequency = (uint32_t) f;
  96.             node = ofw_tree_find_peer_by_device_type(node, "cpu");
  97.         }
  98.     } else if (is_us_iv()) {
  99.         node = ofw_tree_find_child(cpus_parent(), "cmp");
  100.         while (node) {
  101.             int f;
  102.             f = find_cpu_frequency(
  103.                 ofw_tree_find_child(node, "cpu@0"));
  104.             if (f != -1)
  105.                 clock_frequency = (uint32_t) f;
  106.             f = find_cpu_frequency(
  107.                 ofw_tree_find_child(node, "cpu@1"));
  108.             if (f != -1)
  109.                 clock_frequency = (uint32_t) f;
  110.             node = ofw_tree_find_peer_by_name(node, "cmp");
  111.         }
  112.     }
  113.        
  114.     CPU->arch.clock_frequency = clock_frequency;
  115.     tick_init();
  116. }
  117.  
  118. /** Read version information from the current processor. */
  119. void cpu_identify(void)
  120. {
  121.     CPU->arch.ver.value = ver_read();
  122. }
  123.  
  124. /** Print version information for a processor.
  125.  *
  126.  * This function is called by the bootstrap processor.
  127.  *
  128.  * @param m Processor structure of the CPU for which version information is to
  129.  *  be printed.
  130.  */
  131. void cpu_print_report(cpu_t *m)
  132. {
  133.     char *manuf, *impl;
  134.  
  135.     switch (m->arch.ver.manuf) {
  136.     case MANUF_FUJITSU:
  137.         manuf = "Fujitsu";
  138.         break;
  139.     case MANUF_ULTRASPARC:
  140.         manuf = "UltraSPARC";
  141.         break;
  142.     case MANUF_SUN:
  143.             manuf = "Sun";
  144.         break;
  145.     default:
  146.         manuf = "Unknown";
  147.         break;
  148.     }
  149.    
  150.     switch (CPU->arch.ver.impl) {
  151.     case IMPL_ULTRASPARCI:
  152.         impl = "UltraSPARC I";
  153.         break;
  154.     case IMPL_ULTRASPARCII:
  155.         impl = "UltraSPARC II";
  156.         break;
  157.     case IMPL_ULTRASPARCII_I:
  158.         impl = "UltraSPARC IIi";
  159.         break;
  160.     case IMPL_ULTRASPARCII_E:
  161.         impl = "UltraSPARC IIe";
  162.         break;
  163.     case IMPL_ULTRASPARCIII:
  164.         impl = "UltraSPARC III";
  165.         break;
  166.     case IMPL_ULTRASPARCIII_PLUS:
  167.         impl = "UltraSPARC III+";
  168.         break;
  169.     case IMPL_ULTRASPARCIII_I:
  170.         impl = "UltraSPARC IIIi";
  171.         break;
  172.     case IMPL_ULTRASPARCIV:
  173.         impl = "UltraSPARC IV";
  174.         break;
  175.     case IMPL_ULTRASPARCIV_PLUS:
  176.         impl = "UltraSPARC IV+";
  177.         break;
  178.     case IMPL_SPARC64V:
  179.         impl = "SPARC 64V";
  180.         break;
  181.     default:
  182.         impl = "Unknown";
  183.         break;
  184.     }
  185.  
  186.     printf("cpu%d: manuf=%s, impl=%s, mask=%d (%d MHz)\n", m->id, manuf,
  187.         impl, m->arch.ver.mask, m->arch.clock_frequency / 1000000);
  188. }
  189.  
  190. /** @}
  191.  */
  192.