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  1. /*
  2.  * Copyright (C) 2005 Ondrej Palkovsky
  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. #include <arch/drivers/arc.h>
  30. #include <arch/mm/page.h>
  31. #include <print.h>
  32. #include <arch.h>
  33. #include <arch/byteorder.h>
  34.  
  35. /* This is a good joke, SGI HAS different types than NT bioses... */
  36. /* Here is the SGI type */
  37. static char *basetypes[] = {
  38.     "ExceptionBlock",
  39.     "SystemParameterBlock",
  40.     "FreeContiguous",
  41.     "FreeMemory",
  42.     "BadMemory",
  43.     "LoadedProgram",
  44.     "FirmwareTemporary",
  45.     "FirmwarePermanent"
  46. };
  47.  
  48. static arc_sbp *sbp = (arc_sbp *)PA2KA(0x1000);
  49. static arc_func_vector_t *arc_entry;
  50.  
  51. static void _arc_putchar(char ch);
  52.  
  53. /** Initialize ARC structure
  54.  *
  55.  * @return 0 - ARC OK, -1 - ARC does not exist
  56.  */
  57. int init_arc(void)
  58. {
  59.     if (sbp->signature != ARC_MAGIC) {
  60.         sbp = NULL;
  61.         return -1;
  62.     }
  63.     arc_entry = sbp->firmwarevector;
  64.  
  65.     arc_putchar('A');
  66.     arc_putchar('R');
  67.     arc_putchar('C');
  68.     arc_putchar('\n');
  69. }
  70.  
  71. /** Return true if ARC is available */
  72. int arc_enabled(void)
  73. {
  74.     return sbp != NULL;
  75. }
  76.  
  77. void arc_print_memory_map(void)
  78. {
  79.     arc_memdescriptor_t *desc;
  80.  
  81.     if (!sbp) {
  82.         printf("ARC not enabled.\n");
  83.         return;
  84.     }
  85.  
  86.     printf("Memory map:\n");
  87.  
  88.     desc = arc_entry->getmemorydescriptor(NULL);
  89.     while (desc) {
  90.         printf("%s: %d (size: %dKB)\n",basetypes[desc->type],
  91.                desc->basepage * 4096,
  92.                desc->basecount*4);
  93.         desc = arc_entry->getmemorydescriptor(desc);
  94.     }
  95. }
  96.  
  97. /** Print charactor to console */
  98. void arc_putchar(char ch)
  99. {
  100.     __u32 cnt;
  101.     pri_t pri;
  102.  
  103.     /* TODO: Should be spinlock? */
  104.     pri = cpu_priority_high();
  105.     arc_entry->write(1, &ch, 1, &cnt);
  106.     cpu_priority_restore(pri);
  107.    
  108. }
  109.