Subversion Repositories HelenOS

/*

 * Copyright (c) 2001-2004 Jakub Jermar

 * Copyright (c) 2009 Jiri Svoboda

 * Copyright (c) 2009 Martin Decky

 * 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.

 */

/** @addtogroup ia32

 * @{

 */

/** @file

 */

#include <arch.h>

#include <arch/types.h>

#include <arch/pm.h>

#include <genarch/multiboot/multiboot.h>

#include <genarch/drivers/legacy/ia32/io.h>

#include <genarch/drivers/ega/ega.h>

#include <arch/drivers/vesa.h>

#include <genarch/drivers/i8042/i8042.h>

#include <genarch/kbrd/kbrd.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 <interrupt.h>

#include <ddi/irq.h>

#include <arch/debugger.h>

#include <proc/thread.h>

#include <syscall/syscall.h>

#include <console/console.h>

#include <ddi/device.h>

#include <sysinfo/sysinfo.h>

#include <arch/boot/boot.h>

#ifdef CONFIG_SMP

#include <arch/smp/apic.h>

#endif

/** Perform ia32-specific initialization before main_bsp() is called.

 *

 * @param signature Should contain the multiboot signature.

 * @param mi        Pointer to the multiboot information structure.

 */

void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)

{

	/* Parse multiboot information obtained from the bootloader. */

	multiboot_info_parse(signature, mi);	

#ifdef CONFIG_SMP

	/* Copy AP bootstrap routines below 1 MB. */

	memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,

	    (size_t) &_hardcoded_unmapped_size);

#endif

}

void arch_pre_mm_init(void)

{

	pm_init();

	if (config.cpu_active == 1) {

		interrupt_init();

		bios_init();

		/* PIC */

		i8259_init();

	}

}

void arch_post_mm_init(void)

{

	if (config.cpu_active == 1) {

		/* Initialize IRQ routing */

		irq_init(IRQ_COUNT, IRQ_COUNT);

		/* hard clock */

		i8254_init();

#ifdef CONFIG_FB

		if (vesa_present())

			vesa_init();

		else

#endif

#ifdef CONFIG_EGA

			ega_init(EGA_BASE, EGA_VIDEORAM);  /* video */

#else

			{}

#endif

		/* Enable debugger */

		debugger_init();

		/* Merge all memory zones to 1 big zone */

		zone_merge_all();

	}

}

void arch_post_cpu_init()

{

#ifdef CONFIG_SMP

        if (config.cpu_active > 1) {

		l_apic_init();

		l_apic_debug();

	}

#endif

}

void arch_pre_smp_init(void)

{

	if (config.cpu_active == 1) {

#ifdef CONFIG_SMP

		acpi_init();

#endif /* CONFIG_SMP */

	}

}

void arch_post_smp_init(void)

{

#ifdef CONFIG_PC_KBD

	devno_t devno = device_assign_devno();

	/*

	 * Initialize the i8042 controller. Then initialize the keyboard

	 * module and connect it to i8042. Enable keyboard interrupts.

	 */

	indev_t *kbrdin = i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD);

	if (kbrdin) {

		kbrd_init(kbrdin);

		trap_virtual_enable_irqs(1 << IRQ_KBD);

	}

	/*

	 * This is the necessary evil until the userspace driver is entirely

	 * self-sufficient.

	 */

	sysinfo_set_item_val("kbd", NULL, true);

	sysinfo_set_item_val("kbd.devno", NULL, devno);

	sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);

	sysinfo_set_item_val("kbd.address.physical", NULL,

	    (uintptr_t) I8042_BASE);

	sysinfo_set_item_val("kbd.address.kernel", NULL,

	    (uintptr_t) I8042_BASE);

#endif

}

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.

 */

unative_t sys_tls_set(unative_t addr)

{

	THREAD->arch.tls = addr;

	set_tls_desc(addr);

	return 0;

}

/** Acquire console back for kernel

 *

 */

void arch_grab_console(void)

{

#ifdef CONFIG_FB

	if (vesa_present())

		vesa_redraw();

	else

#endif

#ifdef CONFIG_EGA

		ega_redraw();

#else

		{}

#endif

}

/** Return console to userspace

 *

 */

void arch_release_console(void)

{

}

/** Construct function pointer

 *

 * @param fptr   function pointer structure

 * @param addr   function address

 * @param caller calling function address

 *

 * @return address of the function pointer

 *

 */

void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)

{

	return addr;

}

/** @}

 */