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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. #include <arch/drivers/niagara.h>
  54.  
  55. bootinfo_t bootinfo;
  56.  
  57. /** Perform sparc64 specific initialization before main_bsp() is called. */
  58. void arch_pre_main(void)
  59. {
  60.     /* Copy init task info. */
  61.     init.cnt = bootinfo.taskmap.count;
  62.  
  63.     uint32_t i;
  64.  
  65.     for (i = 0; i < bootinfo.taskmap.count; i++) {
  66.         init.tasks[i].addr = (uintptr_t) bootinfo.taskmap.tasks[i].addr;
  67.         init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
  68.         printf("Task %d starts at %x and its size id %d.\n", i, init.tasks[i].addr, init.tasks[i].size);
  69.     }
  70.  
  71.     md_init();
  72. }
  73.  
  74. /** Perform sparc64 specific initialization before mm is initialized. */
  75. void arch_pre_mm_init(void)
  76. {
  77.     if (config.cpu_active == 1)
  78.         trap_init();
  79. }
  80.  
  81. /** Perform sparc64 specific initialization afterr mm is initialized. */
  82. void arch_post_mm_init(void)
  83. {
  84.     if (config.cpu_active == 1) {
  85.         /*
  86.          * We have 2^11 different interrupt vectors.
  87.          * But we only create 128 buckets.
  88.          */
  89.         irq_init(1 << 11, 128);
  90.     }
  91.  
  92.     /*
  93.      * Initialize Niagara input/output driver.
  94.      */
  95.     niagara_init();
  96. }
  97.  
  98. void arch_post_cpu_init(void)
  99. {
  100. }
  101.  
  102. void arch_pre_smp_init(void)
  103. {
  104. }
  105.  
  106. void arch_post_smp_init(void)
  107. {
  108.     static thread_t *t = NULL;
  109.  
  110.  
  111.     if (!t) {
  112.         /*
  113.              * Create thread that polls keyboard.
  114.              */
  115.         t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
  116.         if (!t)
  117.             panic("cannot create kkbdpoll\n");
  118.         thread_ready(t);
  119.     }
  120. }
  121.  
  122. /** Calibrate delay loop.
  123.  *
  124.  * On sparc64, we implement delay() by waiting for the TICK register to
  125.  * reach a pre-computed value, as opposed to performing some pre-computed
  126.  * amount of instructions of known duration. We set the delay_loop_const
  127.  * to 1 in order to neutralize the multiplication done by delay().
  128.  */
  129. void calibrate_delay_loop(void)
  130. {
  131.     CPU->delay_loop_const = 1;
  132. }
  133.  
  134. /** Wait several microseconds.
  135.  *
  136.  * We assume that interrupts are already disabled.
  137.  *
  138.  * @param t Microseconds to wait.
  139.  */
  140. void asm_delay_loop(const uint32_t usec)
  141. {
  142.     uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)
  143.         CPU->arch.clock_frequency / 1000000;
  144.  
  145.     while (tick_read() < stop)
  146.         ;
  147. }
  148.  
  149. /** Switch to userspace. */
  150. void userspace(uspace_arg_t *kernel_uarg)
  151. {
  152.     switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
  153.         ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
  154.         - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
  155.         (uintptr_t) kernel_uarg->uspace_uarg);
  156.  
  157.     for (;;)
  158.         ;
  159.     /* not reached */
  160. }
  161.  
  162. void arch_reboot(void)
  163. {
  164.     // TODO
  165.     while (1);
  166. }
  167.  
  168. /** @}
  169.  */
  170.