0,0 → 1,192 |
/* |
* 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. |
*/ |
|
/** |
* @file kinit.c |
* @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> |
|
#ifdef CONFIG_SMP |
#include <arch/smp/mps.h> |
#endif /* CONFIG_SMP */ |
|
#include <synch/waitq.h> |
#include <synch/spinlock.h> |
|
#ifdef CONFIG_TEST |
#include <test.h> |
#endif /* CONFIG_TEST */ |
|
/** 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) { |
/* |
* 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, 0, "kmp"))) { |
spinlock_lock(&t->lock); |
t->flags |= X_WIRED; |
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) { |
int i; |
|
/* |
* For each CPU, create its load balancing thread. |
*/ |
for (i = 0; i < config.cpu_count; i++) { |
|
if ((t = thread_create(kcpulb, NULL, TASK, 0, "kcpulb"))) { |
spinlock_lock(&t->lock); |
t->flags |= X_WIRED; |
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. |
*/ |
if ((t = thread_create(kconsole, "kconsole", TASK, 0, "kconsole"))) |
thread_ready(t); |
else |
panic("thread_create/kconsole\n"); |
|
interrupts_enable(); |
|
#ifdef CONFIG_TEST |
test(); |
printf("\nTest finished, please reboot\n"); |
#else /* CONFIG_TEST */ |
|
task_t *utask; |
count_t i; |
for (i = 0; i < init.cnt; i++) { |
/* |
* Run user tasks. |
*/ |
|
if (init.tasks[i].addr % FRAME_SIZE) |
panic("init[%d].addr is not frame aligned", i); |
|
utask = task_run_program((void *) init.tasks[i].addr, "USPACE"); |
if (utask) { |
/* |
* Set capabilities to init userspace tasks. |
*/ |
cap_set(utask, CAP_CAP | CAP_MEM_MANAGER | CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG); |
|
if (!ipc_phone_0) |
ipc_phone_0 = &utask->answerbox; |
} else |
printf("Init task %zd not started.\n", i); |
} |
|
|
if (!stdin) { |
while (1) { |
thread_sleep(1); |
printf("kinit... "); |
} |
} |
#endif /* CONFIG_TEST */ |
|
} |