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