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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/sun4u/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/sun4u/cpu_node.h>
  42. #include <arch/cpu.h>
  43.  
  44. /**
  45.  * Finds out the clock frequency of the current CPU.
  46.  *
  47.  * @param node  node representing the current CPU in the OFW tree
  48.  * @return  clock frequency if "node" is the current CPU and no error
  49.  *      occurs, -1 if "node" is not the current CPU or on error
  50.  */
  51. static int find_cpu_frequency(ofw_tree_node_t *node)
  52. {
  53.     ofw_tree_property_t *prop;
  54.     uint32_t mid;
  55.  
  56.     /* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */
  57.     prop = ofw_tree_getprop(node, "upa-portid");
  58.     if ((!prop) || (!prop->value))
  59.         prop = ofw_tree_getprop(node, "portid");
  60.     if ((!prop) || (!prop->value))
  61.         prop = ofw_tree_getprop(node, "cpuid");
  62.    
  63.     if (prop && prop->value) {
  64.         mid = *((uint32_t *) prop->value);
  65.         if (mid == CPU->arch.mid) {
  66.             prop = ofw_tree_getprop(node, "clock-frequency");
  67.             if (prop && prop->value) {
  68.                 return *((uint32_t *) prop->value);
  69.             }
  70.         }
  71.     }
  72.    
  73.     return -1;
  74. }
  75.  
  76. /** Perform sparc64 specific initialization of the processor structure for the
  77.  * current processor.
  78.  */
  79. void cpu_arch_init(void)
  80. {
  81.     ofw_tree_node_t *node;
  82.     uint32_t clock_frequency = 0;
  83.    
  84.     CPU->arch.mid = read_mid();
  85.    
  86.     /*
  87.      * Detect processor frequency.
  88.      */
  89.     if (is_us() || is_us_iii()) {
  90.         node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu");
  91.         while (node) {
  92.             int f = find_cpu_frequency(node);
  93.             if (f != -1)
  94.                 clock_frequency = (uint32_t) f;
  95.             node = ofw_tree_find_peer_by_device_type(node, "cpu");
  96.         }
  97.     } else if (is_us_iv()) {
  98.         node = ofw_tree_find_child(cpus_parent(), "cmp");
  99.         while (node) {
  100.             int f;
  101.             f = find_cpu_frequency(
  102.                 ofw_tree_find_child(node, "cpu@0"));
  103.             if (f != -1)
  104.                 clock_frequency = (uint32_t) f;
  105.             f = find_cpu_frequency(
  106.                 ofw_tree_find_child(node, "cpu@1"));
  107.             if (f != -1)
  108.                 clock_frequency = (uint32_t) f;
  109.             node = ofw_tree_find_peer_by_name(node, "cmp");
  110.         }
  111.     }
  112.        
  113.     CPU->arch.clock_frequency = clock_frequency;
  114.     tick_init();
  115. }
  116.  
  117. /** Read version information from the current processor. */
  118. void cpu_identify(void)
  119. {
  120.     CPU->arch.ver.value = ver_read();
  121. }
  122.  
  123. /** Print version information for a processor.
  124.  *
  125.  * This function is called by the bootstrap processor.
  126.  *
  127.  * @param m Processor structure of the CPU for which version information is to
  128.  *  be printed.
  129.  */
  130. void cpu_print_report(cpu_t *m)
  131. {
  132.     char *manuf, *impl;
  133.  
  134.     switch (m->arch.ver.manuf) {
  135.     case MANUF_FUJITSU:
  136.         manuf = "Fujitsu";
  137.         break;
  138.     case MANUF_ULTRASPARC:
  139.         manuf = "UltraSPARC";
  140.         break;
  141.     case MANUF_SUN:
  142.             manuf = "Sun";
  143.         break;
  144.     default:
  145.         manuf = "Unknown";
  146.         break;
  147.     }
  148.    
  149.     switch (CPU->arch.ver.impl) {
  150.     case IMPL_ULTRASPARCI:
  151.         impl = "UltraSPARC I";
  152.         break;
  153.     case IMPL_ULTRASPARCII:
  154.         impl = "UltraSPARC II";
  155.         break;
  156.     case IMPL_ULTRASPARCII_I:
  157.         impl = "UltraSPARC IIi";
  158.         break;
  159.     case IMPL_ULTRASPARCII_E:
  160.         impl = "UltraSPARC IIe";
  161.         break;
  162.     case IMPL_ULTRASPARCIII:
  163.         impl = "UltraSPARC III";
  164.         break;
  165.     case IMPL_ULTRASPARCIII_PLUS:
  166.         impl = "UltraSPARC III+";
  167.         break;
  168.     case IMPL_ULTRASPARCIII_I:
  169.         impl = "UltraSPARC IIIi";
  170.         break;
  171.     case IMPL_ULTRASPARCIV:
  172.         impl = "UltraSPARC IV";
  173.         break;
  174.     case IMPL_ULTRASPARCIV_PLUS:
  175.         impl = "UltraSPARC IV+";
  176.         break;
  177.     case IMPL_SPARC64V:
  178.         impl = "SPARC 64V";
  179.         break;
  180.     default:
  181.         impl = "Unknown";
  182.         break;
  183.     }
  184.  
  185.     printf("cpu%d: manuf=%s, impl=%s, mask=%d (%d MHz)\n", m->id, manuf,
  186.         impl, m->arch.ver.mask, m->arch.clock_frequency / 1000000);
  187. }
  188.  
  189. /** @}
  190.  */
  191.