source: mainline/arch/ia32/src/ia32.c@ 80d31883

/*
 * 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 <arch.h>

#include <arch/types.h>
#include <typedefs.h>

#include <arch/pm.h>

#include <arch/drivers/ega.h>
#include <arch/drivers/vesa.h>
#include <genarch/i8042/i8042.h>
#include <arch/drivers/i8254.h>
#include <arch/drivers/i8259.h>

#include <arch/context.h>

#include <config.h>

#include <arch/interrupt.h>
#include <arch/asm.h>
#include <genarch/acpi/acpi.h>

#include <arch/bios/bios.h>

#include <arch/mm/memory_init.h>
#include <interrupt.h>
#include <arch/debugger.h>
#include <proc/thread.h>
#include <syscall/syscall.h>
#include <console/console.h>

void arch_pre_mm_init(void)
{
        pm_init();

        if (config.cpu_active == 1) {
                bios_init();
                i8259_init();   /* PIC */
                i8254_init();   /* hard clock */
                
                exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall);
                
                #ifdef CONFIG_SMP
                exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown",
                             (iroutine) tlb_shootdown_ipi);
                #endif /* CONFIG_SMP */
        }
}

void arch_post_mm_init(void)
{
        if (config.cpu_active == 1) {

#ifdef CONFIG_FB
                if (vesa_present()) 
                        vesa_init();
                else
#endif
                        ega_init();     /* video */
                
                
                /* Enable debugger */
                debugger_init();
                /* Merge all memory zones to 1 big zone */
                zone_merge_all();
        }
}

void arch_pre_smp_init(void)
{
        if (config.cpu_active == 1) {
                memory_print_map();
                
                #ifdef CONFIG_SMP
                acpi_init();
                #endif /* CONFIG_SMP */
        }
}

void arch_post_smp_init(void)
{
        i8042_init();   /* keyboard controller */
}

void calibrate_delay_loop(void)
{
        i8254_calibrate_delay_loop();
        if (config.cpu_active == 1) {
                /*
                 * This has to be done only on UP.
                 * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
                 */
                i8254_normal_operation();
        }
}

/** Set thread-local-storage pointer
 *
 * TLS pointer is set in GS register. That means, the GS contains
 * selector, and the descriptor->base is the correct address.
 */
__native sys_tls_set(__native addr)
{
        THREAD->arch.tls = addr;
        set_tls_desc(addr);

        return 0;
}

/** Acquire console back for kernel
 *
 */
void arch_grab_console(void)
{
        i8042_grab();
}
/** Return console to userspace
 *
 */
void arch_release_console(void)
{
        i8042_release();
}