kernel/arch/sparc64/src/cpu/cpu.c

   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/asm.h>
  36 #include <cpu.h>
  37 #include <arch.h>
  38 #include <print.h>
  39 #include <arch/register.h>
  40 #include <genarch/ofw/ofw_tree.h>
  41 #include <arch/types.h>
  42 #include <arch/drivers/tick.h>
  43
  44 /** Perform sparc64 specific initialization of the processor structure for the
  45  * current processor.
  46  */
  47 void cpu_arch_init(void)
  48 {
  49         ofw_tree_node_t *node;
  50         uint32_t mid;
  51         uint32_t clock_frequency = 0;
  52         upa_config_t upa_config;
  53
  54         upa_config.value = upa_config_read();
  55         CPU->arch.mid = upa_config.mid;
  56
  57         /*
  58          * Detect processor frequency.
  59          */
  60         node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
  61         while (node) {
  62                 ofw_tree_property_t *prop;
  63
  64                 prop = ofw_tree_getprop(node, "upa-portid");
  65                 if (prop && prop->value) {
  66                         mid = *((uint32_t *) prop->value);
  67                         if (mid == CPU->arch.mid) {
  68                                 prop = ofw_tree_getprop(node,
  69                                         "clock-frequency");
  70                                 if (prop && prop->value)
  71                                         clock_frequency = *((uint32_t *)
  72                                                 prop->value);
  73                         }
  74                 }
  75                 node = ofw_tree_find_peer_by_device_type(node, "cpu");
  76         }
  77
  78         CPU->arch.clock_frequency = clock_frequency;
  79         tick_init();
  80 }
  81
  82 /** Read version information from the current processor. */
  83 void cpu_identify(void)
  84 {
  85         CPU->arch.ver.value = ver_read();
  86 }
  87
  88 /** Print version information for a processor.
  89  *
  90  * This function is called by the bootstrap processor.
  91  *
  92  * @param m Processor structure of the CPU for which version information is to
  93  *      be printed.
  94  */
  95 void cpu_print_report(cpu_t *m)
  96 {
  97         char *manuf, *impl;
  98
  99         switch (m->arch.ver.manuf) {
 100         case MANUF_FUJITSU:
 101                 manuf = "Fujitsu";
 102                 break;
 103         case MANUF_ULTRASPARC:
 104                 manuf = "UltraSPARC";
 105                 break;
 106         case MANUF_SUN:
 107                 manuf = "Sun";
 108                 break;
 109         default:
 110                 manuf = "Unknown";
 111                 break;
 112         }
 113
 114         switch (CPU->arch.ver.impl) {
 115         case IMPL_ULTRASPARCI:
 116                 impl = "UltraSPARC I";
 117                 break;
 118         case IMPL_ULTRASPARCII:
 119                 impl = "UltraSPARC II";
 120                 break;
 121         case IMPL_ULTRASPARCII_I:
 122                 impl = "UltraSPARC IIi";
 123                 break;
 124         case IMPL_ULTRASPARCII_E:
 125                 impl = "UltraSPARC IIe";
 126                 break;
 127         case IMPL_ULTRASPARCIII:
 128                 impl = "UltraSPARC III";
 129                 break;
 130         case IMPL_ULTRASPARCIV_PLUS:
 131                 impl = "UltraSPARC IV+";
 132                 break;
 133         case IMPL_SPARC64V:
 134                 impl = "SPARC 64V";
 135                 break;
 136         default:
 137                 impl = "Unknown";
 138                 break;
 139         }
 140
 141         printf("cpu%d: manuf=%s, impl=%s, mask=%d (%dMHz)\n", m->id, manuf,
 142                 impl, m->arch.ver.mask, m->arch.clock_frequency / 1000000);
 143 }
 144
 145 /** @}
 146  */