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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/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. #include <arch/mm/page.h>
  44. #include <arch/mm/tlb.h>
  45. #include <macros.h>
  46.  
  47. /** Perform sparc64 specific initialization of the processor structure for the
  48.  * current processor.
  49.  */
  50. void cpu_arch_init(void)
  51. {
  52.     ofw_tree_node_t *node;
  53.     uint32_t mid;
  54.     uint32_t clock_frequency = 0;
  55.     upa_config_t upa_config;
  56.    
  57.     upa_config.value = upa_config_read();
  58.     CPU->arch.mid = upa_config.mid;
  59.    
  60.     /*
  61.      * Detect processor frequency.
  62.      */
  63.     node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
  64.     while (node) {
  65.         ofw_tree_property_t *prop;
  66.        
  67.         prop = ofw_tree_getprop(node, "upa-portid");
  68.         if (prop && prop->value) {
  69.             mid = *((uint32_t *) prop->value);
  70.             if (mid == CPU->arch.mid) {
  71.                 prop = ofw_tree_getprop(node,
  72.                     "clock-frequency");
  73.                 if (prop && prop->value)
  74.                     clock_frequency = *((uint32_t *)
  75.                         prop->value);
  76.             }
  77.         }
  78.         node = ofw_tree_find_peer_by_device_type(node, "cpu");
  79.     }
  80.  
  81.     CPU->arch.clock_frequency = clock_frequency;
  82.     tick_init();
  83.    
  84.     /*
  85.      * Lock CPU stack in DTLB.
  86.      */
  87.     uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH);
  88.          
  89.     if (!overlaps((uintptr_t) CPU->stack, PAGE_SIZE, base, (1 <<
  90.         KERNEL_PAGE_WIDTH))) {
  91.         /*
  92.          * Kernel stack of this processor is not locked in DTLB.
  93.          * First, demap any already existing mappings.
  94.          * Second, create a locked mapping for it.
  95.          */
  96.         dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (uintptr_t)
  97.             CPU->stack);
  98.         dtlb_insert_mapping((uintptr_t) CPU->stack, KA2PA(CPU->stack),
  99.             PAGESIZE_8K, true, true);
  100.     }
  101. }
  102.  
  103. /** Read version information from the current processor. */
  104. void cpu_identify(void)
  105. {
  106.     CPU->arch.ver.value = ver_read();
  107. }
  108.  
  109. /** Print version information for a processor.
  110.  *
  111.  * This function is called by the bootstrap processor.
  112.  *
  113.  * @param m Processor structure of the CPU for which version information is to
  114.  *  be printed.
  115.  */
  116. void cpu_print_report(cpu_t *m)
  117. {
  118.     char *manuf, *impl;
  119.  
  120.     switch (m->arch.ver.manuf) {
  121.     case MANUF_FUJITSU:
  122.         manuf = "Fujitsu";
  123.         break;
  124.     case MANUF_ULTRASPARC:
  125.         manuf = "UltraSPARC";
  126.         break;
  127.     case MANUF_SUN:
  128.             manuf = "Sun";
  129.         break;
  130.     default:
  131.         manuf = "Unknown";
  132.         break;
  133.     }
  134.    
  135.     switch (CPU->arch.ver.impl) {
  136.     case IMPL_ULTRASPARCI:
  137.         impl = "UltraSPARC I";
  138.         break;
  139.     case IMPL_ULTRASPARCII:
  140.         impl = "UltraSPARC II";
  141.         break;
  142.     case IMPL_ULTRASPARCII_I:
  143.         impl = "UltraSPARC IIi";
  144.         break;
  145.     case IMPL_ULTRASPARCII_E:
  146.         impl = "UltraSPARC IIe";
  147.         break;
  148.     case IMPL_ULTRASPARCIII:
  149.         impl = "UltraSPARC III";
  150.         break;
  151.     case IMPL_ULTRASPARCIV_PLUS:
  152.         impl = "UltraSPARC IV+";
  153.         break;
  154.     case IMPL_SPARC64V:
  155.         impl = "SPARC 64V";
  156.         break;
  157.     default:
  158.         impl = "Unknown";
  159.         break;
  160.     }
  161.  
  162.     printf("cpu%d: manuf=%s, impl=%s, mask=%d (%dMHz)\n", m->id, manuf,
  163.         impl, m->arch.ver.mask, m->arch.clock_frequency / 1000000);
  164. }
  165.  
  166. /** @}
  167.  */
  168.