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/*

 * Copyright (c) 2007 Michal Kebrt

 * 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 arm32

 * @{

 */

/** @file

 *  @brief ARM32 architecture specific functions.

 */

#include <arch.h>

#include <config.h>

#include <arch/console.h>

#include <ddi/device.h>

#include <genarch/fb/fb.h>

#include <genarch/fb/visuals.h>

#include <genarch/drivers/dsrln/dsrlnin.h>

#include <genarch/drivers/dsrln/dsrlnout.h>

#include <genarch/srln/srln.h>

#include <sysinfo/sysinfo.h>

#include <ddi/irq.h>

#include <arch/drivers/gxemul.h>

#include <print.h>

#include <config.h>

#include <interrupt.h>

#include <arch/regutils.h>

#include <userspace.h>

#include <macros.h>

#include <string.h>

/** Performs arm32-specific initialization before main_bsp() is called. */

void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)

{

    unsigned int i;

    init.cnt = bootinfo->cnt;

    for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); ++i) {

        init.tasks[i].addr = bootinfo->tasks[i].addr;

        init.tasks[i].size = bootinfo->tasks[i].size;

        strncpy(init.tasks[i].name, bootinfo->tasks[i].name,

            CONFIG_TASK_NAME_BUFLEN);

    }

}

/** Performs arm32 specific initialization before mm is initialized. */

void arch_pre_mm_init(void)

{

    /* It is not assumed by default */

    interrupts_disable();

}

/** Performs arm32 specific initialization afterr mm is initialized. */

void arch_post_mm_init(void)

{

    gxemul_init();

    /* Initialize exception dispatch table */

    exception_init();

    interrupt_init();

#ifdef CONFIG_FB

    fb_properties_t prop = {

        .addr = GXEMUL_FB_ADDRESS,

        .offset = 0,

        .x = 640,

        .y = 480,

        .scan = 1920,

        .visual = VISUAL_BGR_8_8_8,

    };

    fb_init(&prop);

#else

#ifdef CONFIG_ARM_PRN

    dsrlnout_init((ioport8_t *) gxemul_kbd);

#endif /* CONFIG_ARM_PRN */

#endif /* CONFIG_FB */

}

/** Performs arm32 specific tasks needed after cpu is initialized.

 *

 * Currently the function is empty.

 */

void arch_post_cpu_init(void)

{

}

/** Performs arm32 specific tasks needed before the multiprocessing is

 * initialized.

 *

 * Currently the function is empty because SMP is not supported.

 */

void arch_pre_smp_init(void)

{

}

/** Performs arm32 specific tasks needed after the multiprocessing is

 * initialized.

 *

 * Currently the function is empty because SMP is not supported.

 */

void arch_post_smp_init(void)

{

#ifdef CONFIG_ARM_KBD

    devno_t devno = device_assign_devno();

    /*

     * Initialize the msim/GXemul keyboard port. Then initialize the serial line

     * module and connect it to the msim/GXemul keyboard. Enable keyboard interrupts.

     */

    indev_t *kbrdin = dsrlnin_init((dsrlnin_t *) gxemul_kbd, devno, GXEMUL_KBD_IRQ);

    if (kbrdin)

        srln_init(kbrdin);

    /*

     * 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, GXEMUL_KBD_IRQ);

    sysinfo_set_item_val("kbd.address.virtual", NULL, (unative_t) gxemul_kbd);

#endif

}

/** Performs arm32 specific tasks needed before the new task is run. */

void before_task_runs_arch(void)

{

    tlb_invalidate_all();

}

/** Performs arm32 specific tasks needed before the new thread is scheduled.

 *

 * It sets supervisor_sp.

 */

void before_thread_runs_arch(void)

{

    uint8_t *stck;

    stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];

    supervisor_sp = (uintptr_t) stck;

}

/** Performs arm32 specific tasks before a thread stops running.

 *

 * Currently the function is empty.

 */

void after_thread_ran_arch(void)

{

}

/** Halts CPU. */

void cpu_halt(void)

{

    *((char *) (gxemul_kbd + GXEMUL_HALT_OFFSET))

        = 0;

}

/** Reboot. */

void arch_reboot()

{

    /* not implemented */

    while (1);

}

/** 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;

}

/** @}

 */