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* Copyright (c) 2001-2004 Jakub Jermar
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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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* - 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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* 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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/** @addtogroup generic
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* @brief CPU subsystem initialization and listing.
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#include <arch/types.h>
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* Initialize kernel CPUs support.
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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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panic("Cannot allocate CPU structures.");
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/* initialize everything */
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memsetb(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 = (uint8_t *) frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_ATOMIC);
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spinlock_initialize(&cpus[i].lock, "cpu_t.lock");
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for (j = 0; j < RQ_COUNT; j++) {
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spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock");
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list_initialize(&cpus[i].rq[j].rq_head);
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#endif /* CONFIG_SMP */
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CPU = &cpus[config.cpu_active - 1];
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/** List all processors. */
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for (i = 0; i < config.cpu_count; i++) {
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cpu_print_report(&cpus[i]);
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printf("cpu%u: not active\n", i);