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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.h>
  36. #include <debug.h>
  37. #include <config.h>
  38. #include <arch/trap/trap.h>
  39. #include <arch/console.h>
  40. #include <proc/thread.h>
  41. #include <console/console.h>
  42. #include <arch/boot/boot.h>
  43. #include <arch/arch.h>
  44. #include <arch/asm.h>
  45. #include <arch/mm/page.h>
  46. #include <arch/stack.h>
  47. #include <userspace.h>
  48. #include <ddi/irq.h>
  49. #include <print.h>
  50.  
  51. bootinfo_t bootinfo;
  52.  
  53. /** Perform sparc64 specific initialization before mm is initialized. */
  54. void arch_pre_mm_init(void)
  55. {
  56.     if (config.cpu_active == 1)
  57.         trap_init();
  58. }
  59.  
  60. /** Perform sparc64 specific initialization afterr mm is initialized. */
  61. void arch_post_mm_init(void)
  62. {
  63.     if (config.cpu_active == 1) {
  64.         /*
  65.          * We have 2^11 different interrupt vectors.
  66.          * But we only create 128 buckets.
  67.          */
  68.         irq_init(1 << 11, 128);
  69.  
  70.         standalone_sparc64_console_init();
  71.     }
  72. }
  73.  
  74. void arch_post_cpu_init(void)
  75. {
  76. }
  77.  
  78. void arch_pre_smp_init(void)
  79. {
  80. }
  81.  
  82. void arch_post_smp_init(void)
  83. {
  84.     static thread_t *t = NULL;
  85.  
  86.  
  87.     if (!t) {
  88.         /*
  89.              * Create thread that polls keyboard.
  90.              */
  91.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  92.         if (!t)
  93.             panic("cannot create kkbdpoll\n");
  94.         thread_ready(t);
  95.     }
  96. }
  97.  
  98. /** Calibrate delay loop.
  99.  *
  100.  * On sparc64, we implement delay() by waiting for the TICK register to
  101.  * reach a pre-computed value, as opposed to performing some pre-computed
  102.  * amount of instructions of known duration. We set the delay_loop_const
  103.  * to 1 in order to neutralize the multiplication done by delay().
  104.  */
  105. void calibrate_delay_loop(void)
  106. {
  107.     CPU->delay_loop_const = 1;
  108. }
  109.  
  110. /** Wait several microseconds.
  111.  *
  112.  * We assume that interrupts are already disabled.
  113.  *
  114.  * @param t Microseconds to wait.
  115.  */
  116. void asm_delay_loop(const uint32_t usec)
  117. {
  118.     uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
  119.         CPU->arch.clock_frequency / 1000000;
  120.  
  121.     while (tick_read() < stop)
  122.         ;
  123. }
  124.  
  125. /** Switch to userspace. */
  126. void userspace(uspace_arg_t *kernel_uarg)
  127. {
  128.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  129.         ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
  130.         - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
  131.         (uintptr_t) kernel_uarg->uspace_uarg);
  132.  
  133.     for (;;)
  134.         ;
  135.     /* not reached */
  136. }
  137.  
  138. void arch_reboot(void)
  139. {
  140.     // TODO
  141.     while (1);
  142. }
  143.  
  144. /** @}
  145.  */
  146.