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1 jermar 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <cpu.h>
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#include <arch.h>
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#include <arch/cpu.h>
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#include <mm/heap.h>
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#include <mm/page.h>
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#include <mm/frame.h>
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#include <arch/types.h>
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#include <config.h>
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#include <panic.h>
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#include <typedefs.h>
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#include <memstr.h>
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#include <list.h>
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cpu_t *cpus;
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/** Initialize CPUs
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 *
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 * Initialize kernel CPUs support.
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 *
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 */
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void cpu_init(void) {
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    int i, j;
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    #ifdef CONFIG_SMP
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    if (config.cpu_active == 1) {
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    #endif /* CONFIG_SMP */
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        cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count);
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        if (!cpus)
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            panic("malloc/cpus");
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        /* initialize everything */
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        memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0);
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        for (i=0; i < config.cpu_count; i++) {
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            cpus[i].stack = (__u8 *) frame_alloc(FRAME_KA | FRAME_PANIC, ONE_FRAME);
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            if (!cpus[i].stack)
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                panic("malloc/cpus[%d].stack\n", i);
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            cpus[i].id = i;
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            #ifdef CONFIG_SMP
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            waitq_initialize(&cpus[i].kcpulb_wq);
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            #endif /* __SMP */
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            for (j = 0; j < RQ_COUNT; j++) {
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                list_initialize(&cpus[i].rq[j].rq_head);
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            }
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        }
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    #ifdef CONFIG_SMP
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    }
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    #endif /* CONFIG_SMP */
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    CPU = &cpus[config.cpu_active-1];
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    CPU->active = 1;
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    CPU->tlb_active = 1;
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    cpu_identify();
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    cpu_arch_init();
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}