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| /* |
| * 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 <proc/program.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> |
| #include <debug.h> |
| #include <string.h> |
| |
| #ifdef CONFIG_SMP |
| #include <smp/smp.h> |
| #endif /* CONFIG_SMP */ |
| |
| #include <synch/waitq.h> |
| #include <synch/spinlock.h> |
| |
| #define ALIVE_CHARS 4 |
| |
| #ifdef CONFIG_KCONSOLE |
| static char alive[ALIVE_CHARS] = "-\\|/"; |
| #endif |
| |
| #define INIT_PREFIX "init:" |
| #define INIT_PREFIX_LEN 5 |
| |
| /** 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) |
| { |
| |
| #if defined(CONFIG_SMP) || defined(CONFIG_KCONSOLE) |
| thread_t *thread; |
| #endif |
| |
| /* |
| * 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. |
| */ |
| thread = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, "kmp", true); |
| if (thread != NULL) { |
| spinlock_lock(&thread->lock); |
| thread->cpu = &cpus[0]; |
| spinlock_unlock(&thread->lock); |
| thread_ready(thread); |
| } else |
| panic("Unable to create kmp thread."); |
| thread_join(thread); |
| thread_detach(thread); |
| } |
| |
| if (config.cpu_count > 1) { |
| size_t i; |
| |
| /* |
| * For each CPU, create its load balancing thread. |
| */ |
| for (i = 0; i < config.cpu_count; i++) { |
| thread = thread_create(kcpulb, NULL, TASK, THREAD_FLAG_WIRED, "kcpulb", true); |
| if (thread != NULL) { |
| spinlock_lock(&thread->lock); |
| thread->cpu = &cpus[i]; |
| spinlock_unlock(&thread->lock); |
| thread_ready(thread); |
| } else |
| printf("Unable to create kcpulb thread for cpu" PRIs "\n", i); |
| } |
| } |
| #endif /* CONFIG_SMP */ |
| |
| /* |
| * At this point SMP, if present, is configured. |
| */ |
| arch_post_smp_init(); |
| |
| #ifdef CONFIG_KCONSOLE |
| if (stdin) { |
| /* |
| * Create kernel console. |
| */ |
| thread = thread_create(kconsole_thread, NULL, TASK, 0, "kconsole", false); |
| if (thread != NULL) |
| thread_ready(thread); |
| else |
| printf("Unable to create kconsole thread\n"); |
| } |
| #endif /* CONFIG_KCONSOLE */ |
| |
| interrupts_enable(); |
| |
| /* |
| * Create user tasks, load RAM disk images. |
| */ |
| size_t i; |
| program_t programs[CONFIG_INIT_TASKS]; |
| |
| for (i = 0; i < init.cnt; i++) { |
| if (init.tasks[i].addr % FRAME_SIZE) { |
| printf("init[%" PRIs "].addr is not frame aligned\n", i); |
| continue; |
| } |
| |
| /* |
| * Construct task name from the 'init:' prefix and the |
| * name stored in the init structure (if any). |
| */ |
| |
| char namebuf[TASK_NAME_BUFLEN]; |
| char *name; |
| |
| name = init.tasks[i].name; |
| if (name[0] == 0) |
| name = "<unknown>"; |
| |
| ASSERT(TASK_NAME_BUFLEN >= INIT_PREFIX_LEN); |
| str_cpy(namebuf, TASK_NAME_BUFLEN, INIT_PREFIX); |
| str_cpy(namebuf + INIT_PREFIX_LEN, |
| TASK_NAME_BUFLEN - INIT_PREFIX_LEN, name); |
| |
| int rc = program_create_from_image((void *) init.tasks[i].addr, |
| namebuf, &programs[i]); |
| |
| if ((rc == 0) && (programs[i].task != NULL)) { |
| /* |
| * Set capabilities to init userspace tasks. |
| */ |
| cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER | |
| CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG); |
| |
| if (!ipc_phone_0) |
| ipc_phone_0 = &programs[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 %" PRIs " not used (error %d)\n", i, rd); |
| } |
| } |
| |
| /* |
| * Run user tasks. |
| */ |
| for (i = 0; i < init.cnt; i++) { |
| if (programs[i].task != NULL) |
| program_ready(&programs[i]); |
| } |
| |
| #ifdef CONFIG_KCONSOLE |
| if (!stdin) { |
| thread_sleep(10); |
| printf("kinit: No stdin\nKernel alive: ."); |
| |
| unsigned int i = 0; |
| while (true) { |
| printf("\b%c", alive[i % ALIVE_CHARS]); |
| thread_sleep(1); |
| i++; |
| } |
| } |
| #endif /* CONFIG_KCONSOLE */ |
| } |
| |
| /** @} |
| */ |