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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. |
| */ |
| |
| #include <main/kinit.h> |
| #include <main/uinit.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> |
| |
| #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; |
| as_t *as; |
| as_area_t *a; |
| __address frame; |
| count_t frames; |
| int i; |
| task_t *u; |
| |
| 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))) { |
| spinlock_lock(&t->lock); |
| t->flags |= X_WIRED; |
| t->cpu = &cpus[0]; |
| spinlock_unlock(&t->lock); |
| thread_ready(t); |
| waitq_sleep(&kmp_completion_wq); |
| } |
| else panic("thread_create/kmp\n"); |
| } |
| #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))) { |
| 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))) |
| thread_ready(t); |
| else |
| panic("thread_create/kconsole\n"); |
| |
| interrupts_enable(); |
| |
| if (config.init_size > 0) { |
| /* |
| * Create the first user task. |
| */ |
| |
| if (config.init_addr % FRAME_SIZE) |
| panic("config.init_addr is not frame aligned"); |
| |
| as = as_create(0); |
| if (!as) |
| panic("as_create\n"); |
| u = task_create(as); |
| if (!u) |
| panic("task_create\n"); |
| t = thread_create(uinit, NULL, u, THREAD_USER_STACK); |
| if (!t) |
| panic("thread_create\n"); |
| |
| /* |
| * Create the text as_area and initialize its mapping. |
| */ |
| |
| frame = config.init_addr; |
| if (IS_KA(frame)) |
| frame = KA2PA(frame); |
| |
| frames = SIZE2FRAMES(config.init_size); |
| |
| a = as_area_create(as, AS_AREA_TEXT, frames, UTEXT_ADDRESS); |
| if (!a) |
| panic("as_area_create: text\n"); |
| |
| for (i = 0; i < frames; i++) |
| as_set_mapping(as, UTEXT_ADDRESS + i * PAGE_SIZE, frame + i * FRAME_SIZE); |
| |
| /* |
| * Create the data as_area. |
| */ |
| a = as_area_create(as, AS_AREA_STACK, 1, USTACK_ADDRESS); |
| if (!a) |
| panic("as_area_create: stack\n"); |
| |
| thread_ready(t); |
| } |
| |
| #ifdef CONFIG_TEST |
| test(); |
| #endif /* CONFIG_TEST */ |
| |
| if (!stdin) { |
| while (1) { |
| thread_sleep(1); |
| printf("kinit... "); |
| } |
| } |
| |
| } |