0,0 → 1,106 |
/* |
* 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. |
*/ |
|
/** |
* @file cpu.c |
* @brief CPU subsystem initialization and listing. |
*/ |
|
#include <cpu.h> |
#include <arch.h> |
#include <arch/cpu.h> |
#include <mm/slab.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 <adt/list.h> |
#include <print.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, |
FRAME_ATOMIC); |
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 *) PA2KA(PFN2ADDR(frame_alloc(STACK_FRAMES, FRAME_KA | FRAME_PANIC))); |
|
cpus[i].id = i; |
|
spinlock_initialize(&cpus[i].lock, "cpu_t.lock"); |
|
for (j = 0; j < RQ_COUNT; j++) { |
spinlock_initialize(&cpus[i].rq[j].lock, "rq_t.lock"); |
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(); |
} |
|
/** List all processors. */ |
void cpu_list(void) |
{ |
int i; |
|
for (i = 0; i < config.cpu_count; i++) { |
if (cpus[i].active) |
cpu_print_report(&cpus[i]); |
else |
printf("cpu%d: not active\n", i); |
} |
} |