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  1. /*
  2.  * Copyright (C) 2001-2004 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. #include <main/kinit.h>
  30. #include <config.h>
  31. #include <arch.h>
  32. #include <proc/scheduler.h>
  33. #include <proc/task.h>
  34. #include <proc/thread.h>
  35. #include <panic.h>
  36. #include <func.h>
  37. #include <cpu.h>
  38. #include <arch/asm.h>
  39. #include <mm/page.h>
  40. #include <arch/mm/page.h>
  41. #include <mm/as.h>
  42. #include <mm/frame.h>
  43. #include <print.h>
  44. #include <memstr.h>
  45. #include <console/console.h>
  46. #include <interrupt.h>
  47. #include <console/kconsole.h>
  48. #include <security/cap.h>
  49.  
  50. #ifdef CONFIG_SMP
  51. #include <arch/smp/mps.h>
  52. #endif /* CONFIG_SMP */
  53.  
  54. #include <synch/waitq.h>
  55. #include <synch/spinlock.h>
  56.  
  57. #ifdef CONFIG_TEST
  58. #include <test.h>
  59. #endif /* CONFIG_TEST */
  60.  
  61. /** Kernel initialization thread.
  62.  *
  63.  * kinit takes care of higher level kernel
  64.  * initialization (i.e. thread creation,
  65.  * userspace initialization etc.).
  66.  *
  67.  * @param arg Not used.
  68.  */
  69. void kinit(void *arg)
  70. {
  71.     thread_t *t;
  72.     task_t *utask;
  73.  
  74.     interrupts_disable();
  75.  
  76. #ifdef CONFIG_SMP          
  77.     if (config.cpu_count > 1) {
  78.         /*
  79.          * Create the kmp thread and wait for its completion.
  80.          * cpu1 through cpuN-1 will come up consecutively and
  81.          * not mess together with kcpulb threads.
  82.          * Just a beautification.
  83.          */
  84.         if ((t = thread_create(kmp, NULL, TASK, 0, "kmp"))) {
  85.             spinlock_lock(&t->lock);
  86.             t->flags |= X_WIRED;
  87.             t->cpu = &cpus[0];
  88.             spinlock_unlock(&t->lock);
  89.             thread_ready(t);
  90.             waitq_sleep(&kmp_completion_wq);
  91.         }
  92.         else panic("thread_create/kmp\n");
  93.     }
  94. #endif /* CONFIG_SMP */
  95.     /*
  96.      * Now that all CPUs are up, we can report what we've found.
  97.      */
  98.     cpu_list();
  99.  
  100. #ifdef CONFIG_SMP
  101.     if (config.cpu_count > 1) {
  102.         int i;
  103.        
  104.         /*
  105.          * For each CPU, create its load balancing thread.
  106.          */
  107.         for (i = 0; i < config.cpu_count; i++) {
  108.  
  109.             if ((t = thread_create(kcpulb, NULL, TASK, 0, "kcpulb"))) {
  110.                 spinlock_lock(&t->lock);           
  111.                 t->flags |= X_WIRED;
  112.                 t->cpu = &cpus[i];
  113.                 spinlock_unlock(&t->lock);
  114.                 thread_ready(t);
  115.             }
  116.             else panic("thread_create/kcpulb\n");
  117.  
  118.         }
  119.     }
  120. #endif /* CONFIG_SMP */
  121.  
  122.     /*
  123.      * At this point SMP, if present, is configured.
  124.      */
  125.     arch_post_smp_init();
  126.  
  127.     /*
  128.      * Create kernel console.
  129.      */
  130.     if ((t = thread_create(kconsole, "kconsole", TASK, 0, "kconsole")))
  131.         thread_ready(t);
  132.     else
  133.         panic("thread_create/kconsole\n");
  134.  
  135.     interrupts_enable();
  136.    
  137.     count_t i;
  138.     for (i = 0; i < init.cnt; i++) {
  139.         /*
  140.          * Run user tasks.
  141.          */
  142.        
  143.         if (init.tasks[i].addr % FRAME_SIZE)
  144.             panic("init[%d].addr is not frame aligned", i);
  145.  
  146.         utask = task_run_program((void *) init.tasks[i].addr, "USPACE");
  147.         if (utask) {
  148.             /*
  149.              * Set capabilities to init userspace tasks.
  150.              */
  151.             cap_set(utask, CAP_CAP | CAP_MEM_MANAGER | CAP_IO_MANAGER);
  152.            
  153.             if (!ipc_phone_0)
  154.                 ipc_phone_0 = &utask->answerbox;
  155.         } else
  156.             printf("Init task %zd not started.\n", i);
  157.     }
  158.  
  159. #ifdef CONFIG_TEST
  160.     test();
  161. #endif /* CONFIG_TEST */
  162.  
  163.     if (!stdin) {
  164.         while (1) {
  165.             thread_sleep(1);
  166.             printf("kinit... ");
  167.         }
  168.     }
  169.  
  170. }
  171.