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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 <arch/sun4v/md.h>
  48. #include <genarch/ofw/ofw_tree.h>
  49. #include <userspace.h>
  50. #include <ddi/irq.h>
  51. #include <print.h>
  52.  
  53. bootinfo_t bootinfo;
  54.  
  55. /** Perform sparc64 specific initialization before main_bsp() is called. */
  56. void arch_pre_main(void)
  57. {
  58.     /* Copy init task info. */
  59.     init.cnt = bootinfo.taskmap.count;
  60.  
  61.     uint32_t i;
  62.  
  63.     for (i = 0; i < bootinfo.taskmap.count; i++) {
  64.         init.tasks[i].addr = (uintptr_t) bootinfo.taskmap.tasks[i].addr;
  65.         init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
  66.     }
  67.     md_init();
  68. }
  69.  
  70. /** Perform sparc64 specific initialization before mm is initialized. */
  71. void arch_pre_mm_init(void)
  72. {
  73.     if (config.cpu_active == 1)
  74.         trap_init();
  75. }
  76.  
  77. /** Perform sparc64 specific initialization afterr mm is initialized. */
  78. void arch_post_mm_init(void)
  79. {
  80.     if (config.cpu_active == 1) {
  81.         /*
  82.          * We have 2^11 different interrupt vectors.
  83.          * But we only create 128 buckets.
  84.          */
  85.         irq_init(1 << 11, 128);
  86.     }
  87.  
  88.     standalone_sparc64_console_init();
  89. }
  90.  
  91. void arch_post_cpu_init(void)
  92. {
  93. }
  94.  
  95. void arch_pre_smp_init(void)
  96. {
  97. }
  98.  
  99. void arch_post_smp_init(void)
  100. {
  101.     static thread_t *t = NULL;
  102.  
  103.  
  104.     if (!t) {
  105.         /*
  106.              * Create thread that polls keyboard.
  107.              */
  108.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  109.         if (!t)
  110.             panic("cannot create kkbdpoll\n");
  111.         thread_ready(t);
  112.     }
  113. }
  114.  
  115. /** Calibrate delay loop.
  116.  *
  117.  * On sparc64, we implement delay() by waiting for the TICK register to
  118.  * reach a pre-computed value, as opposed to performing some pre-computed
  119.  * amount of instructions of known duration. We set the delay_loop_const
  120.  * to 1 in order to neutralize the multiplication done by delay().
  121.  */
  122. void calibrate_delay_loop(void)
  123. {
  124.     CPU->delay_loop_const = 1;
  125. }
  126.  
  127. /** Wait several microseconds.
  128.  *
  129.  * We assume that interrupts are already disabled.
  130.  *
  131.  * @param t Microseconds to wait.
  132.  */
  133. void asm_delay_loop(const uint32_t usec)
  134. {
  135.     uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
  136.         CPU->arch.clock_frequency / 1000000;
  137.  
  138.     while (tick_read() < stop)
  139.         ;
  140. }
  141.  
  142. /** Switch to userspace. */
  143. void userspace(uspace_arg_t *kernel_uarg)
  144. {
  145.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  146.         ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
  147.         - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
  148.         (uintptr_t) kernel_uarg->uspace_uarg);
  149.  
  150.     for (;;)
  151.         ;
  152.     /* not reached */
  153. }
  154.  
  155. void arch_reboot(void)
  156. {
  157.     // TODO
  158.     while (1);
  159. }
  160.  
  161. /** @}
  162.  */
  163.