/*
* Copyright (c) 2001-2004 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup main
* @{
*/
/**
* @file
* @brief Kernel initialization thread.
*
* This file contains kinit kernel thread which carries out
* high level system initialization.
*
* This file is responsible for finishing SMP configuration
* and creation of userspace init tasks.
*/
#include <main/kinit.h>
#include <config.h>
#include <arch.h>
#include <proc/scheduler.h>
#include <proc/task.h>
#include <proc/thread.h>
#include <panic.h>
#include <func.h>
#include <cpu.h>
#include <arch/asm.h>
#include <mm/page.h>
#include <arch/mm/page.h>
#include <mm/as.h>
#include <mm/frame.h>
#include <print.h>
#include <memstr.h>
#include <console/console.h>
#include <interrupt.h>
#include <console/kconsole.h>
#include <security/cap.h>
#include <lib/rd.h>
#include <ipc/ipc.h>
#ifdef CONFIG_SMP
#include <smp/smp.h>
#endif /* CONFIG_SMP */
#include <synch/waitq.h>
#include <synch/spinlock.h>
/** Kernel initialization thread.
*
* kinit takes care of higher level kernel
* initialization (i.e. thread creation,
* userspace initialization etc.).
*
* @param arg Not used.
*/
void kinit(void *arg)
{
thread_t *t;
/*
* Detach kinit as nobody will call thread_join_timeout() on it.
*/
thread_detach(THREAD);
interrupts_disable();
#ifdef CONFIG_SMP
if (config.cpu_count > 1) {
waitq_initialize(&ap_completion_wq);
/*
* Create the kmp thread and wait for its completion.
* cpu1 through cpuN-1 will come up consecutively and
* not mess together with kcpulb threads.
* Just a beautification.
*/
if ((t = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED,
"kmp", true))) {
spinlock_lock(&t->lock);
t->cpu = &cpus[0];
spinlock_unlock(&t->lock);
thread_ready(t);
} else
panic("thread_create/kmp\n");
thread_join(t);
thread_detach(t);
}
#endif /* CONFIG_SMP */
/*
* Now that all CPUs are up, we can report what we've found.
*/
cpu_list();
#ifdef CONFIG_SMP
if (config.cpu_count > 1) {
count_t i;
/*
* For each CPU, create its load balancing thread.
*/
for (i = 0; i < config.cpu_count; i++) {
if ((t = thread_create(kcpulb, NULL, TASK,
THREAD_FLAG_WIRED, "kcpulb", true))) {
spinlock_lock(&t->lock);
t->cpu = &cpus[i];
spinlock_unlock(&t->lock);
thread_ready(t);
} else
panic("thread_create/kcpulb\n");
}
}
#endif /* CONFIG_SMP */
/*
* At this point SMP, if present, is configured.
*/
arch_post_smp_init();
/*
* Create kernel console.
*/
t = thread_create(kconsole, (void *) "kconsole", TASK, 0, "kconsole", false);
if (t)
thread_ready(t);
else
panic("thread_create/kconsole\n");
interrupts_enable();
/*
* Create user tasks, load RAM disk images.
*/
count_t i;
thread_t *threads[CONFIG_INIT_TASKS];
for (i = 0; i < init.cnt; i++) {
if (init.tasks[i].addr % FRAME_SIZE) {
printf("init[%" PRIc
"].addr is not frame aligned", i
); continue;
}
int rc = task_parse_initial((void *) init.tasks[i].addr,
"uspace", &threads[i]);
if (rc == 0 && threads[i] != NULL) {
/*
* Set capabilities to init userspace tasks.
*/
cap_set(threads[i]->task, CAP_CAP | CAP_MEM_MANAGER |
CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
if (!ipc_phone_0)
ipc_phone_0 = &threads[i]->task->answerbox;
} else if (rc == 0) {
/* It was the program loader and was registered */
} else {
/* RAM disk image */
int rd = init_rd((rd_header_t *) init.tasks[i].addr,
init.tasks[i].size);
if (rd != RE_OK)
printf("Init binary %" PRIc
" not used, error code %d.\n", i
, rd
); }
}
/*
* Run user tasks with reasonable delays
*/
for (i = 0; i < init.cnt; i++) {
if (threads[i] != NULL) {
thread_usleep(50000);
thread_ready(threads[i]);
}
}
if (!stdin) {
while (1) {
thread_sleep(1);
}
}
}
/** @}
*/