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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 <cpu.h>
#include <arch.h>
#include <arch/cpu.h>
#include <mm/heap.h>
#include <mm/page.h>
#include <mm/frame.h>
#include <arch/types.h>
#include <config.h>
#include <panic.h>
#include <typedefs.h>
#include <memstr.h>
#include <list.h>
cpu_t *cpus;
/** Initialize CPUs
*
* Initialize kernel CPUs support.
*
*/
void cpu_init(void) {
int i, j;
#ifdef CONFIG_SMP
if (config.cpu_active == 1) {
#endif /* CONFIG_SMP */
cpus = (cpu_t *) malloc(sizeof(cpu_t) * config.cpu_count);
if (!cpus)
panic("malloc/cpus");
/* initialize everything */
memsetb((__address) cpus, sizeof(cpu_t) * config.cpu_count, 0);
for (i=0; i < config.cpu_count; i++) {
cpus[i].stack = (__u8 *) frame_alloc(FRAME_KA | FRAME_PANIC);
if (!cpus[i].stack)
panic("malloc/cpus[%d].stack\n", i);
cpus[i].id = i;
#ifdef CONFIG_SMP
waitq_initialize(&cpus[i].kcpulb_wq);
#endif /* __SMP */
for (j = 0; j < RQ_COUNT; j++) {
list_initialize(&cpus[i].rq[j].rq_head);
}
}
#ifdef CONFIG_SMP
}
#endif /* CONFIG_SMP */
CPU = &cpus[config.cpu_active-1];
CPU->active = 1;
CPU->tlb_active = 1;
cpu_identify();
cpu_arch_init();
}