Subversion Repositories HelenOS

Rev

Rev 1894 | Rev 1899 | Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | Download | RSS feed

  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.h>
  36. #include <debug.h>
  37. #include <config.h>
  38. #include <arch/trap/trap.h>
  39. #include <arch/console.h>
  40. #include <arch/drivers/tick.h>
  41. #include <proc/thread.h>
  42. #include <console/console.h>
  43. #include <arch/boot/boot.h>
  44. #include <arch/arch.h>
  45. #include <arch/asm.h>
  46. #include <arch/mm/page.h>
  47. #include <arch/stack.h>
  48. #include <genarch/ofw/ofw_tree.h>
  49. #include <userspace.h>
  50.  
  51. bootinfo_t bootinfo;
  52.  
  53. void arch_pre_main(void)
  54. {
  55.     /* Copy init task info. */
  56.     init.cnt = bootinfo.taskmap.count;
  57.    
  58.     uint32_t i;
  59.  
  60.     for (i = 0; i < bootinfo.taskmap.count; i++) {
  61.         init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr);
  62.         init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
  63.     }
  64.    
  65.     /* Copy boot allocations info. */
  66.     ballocs.base = bootinfo.ballocs.base;
  67.     ballocs.size = bootinfo.ballocs.size;
  68.    
  69.     ofw_tree_init(bootinfo.ofw_root);
  70. }
  71.  
  72. void arch_pre_mm_init(void)
  73. {
  74.     trap_init();
  75.     tick_init();
  76. }
  77.  
  78. void arch_post_mm_init(void)
  79. {
  80.     standalone_sparc64_console_init();
  81. }
  82.  
  83. void arch_pre_smp_init(void)
  84. {
  85. }
  86.  
  87. void arch_post_smp_init(void)
  88. {
  89.     thread_t *t;
  90.  
  91.     /*
  92.          * Create thread that polls keyboard.
  93.          */
  94.     t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll");
  95.     if (!t)
  96.         panic("cannot create kkbdpoll\n");
  97.     thread_ready(t);
  98. }
  99.  
  100. /** Calibrate delay loop.
  101.  *
  102.  * On sparc64, we implement delay() by waiting for the TICK register to
  103.  * reach a pre-computed value, as opposed to performing some pre-computed
  104.  * amount of instructions of known duration. We set the delay_loop_const
  105.  * to 1 in order to neutralize the multiplication done by delay().
  106.  */
  107. void calibrate_delay_loop(void)
  108. {
  109.     CPU->delay_loop_const = 1;
  110. }
  111.  
  112. /** Wait several microseconds.
  113.  *
  114.  * We assume that interrupts are already disabled.
  115.  *
  116.  * @param t Microseconds to wait.
  117.  */
  118. void asm_delay_loop(const uint32_t usec)
  119. {
  120.     uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t) CPU->arch.clock_frequency / 1000000;
  121.  
  122.     while (tick_read() < stop)
  123.         ;
  124. }
  125.  
  126. /** Switch to userspace. */
  127. void userspace(uspace_arg_t *kernel_uarg)
  128. {
  129.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  130.         ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
  131.         - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
  132.         (uintptr_t) kernel_uarg->uspace_uarg);
  133.  
  134.     for (;;)
  135.         ;
  136.     /* not reached */
  137. }
  138.  
  139. /** @}
  140.  */
  141.