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/*

 * Copyright (c) 2005 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.

 */

/** @addtogroup sparc64

 * @{

 */

/** @file

 */

#include <arch.h>

#include <debug.h>

#include <config.h>

#include <arch/trap/trap.h>

#include <arch/console.h>

#include <console/console.h>

#include <arch/boot/boot.h>

#include <arch/arch.h>

#include <arch/asm.h>

#include <arch/mm/page.h>

#include <arch/stack.h>

#include <genarch/ofw/ofw_tree.h>

#include <userspace.h>

#include <ddi/irq.h>

#include <string.h>

bootinfo_t bootinfo;

/** Perform sparc64-specific initialization before main_bsp() is called. */

void arch_pre_main(void)

{

    /* Copy init task info. */

    init.cnt = bootinfo.taskmap.count;

    uint32_t i;

    for (i = 0; i < bootinfo.taskmap.count; i++) {

        init.tasks[i].addr = (uintptr_t) bootinfo.taskmap.tasks[i].addr;

        init.tasks[i].size = bootinfo.taskmap.tasks[i].size;

        strncpy(init.tasks[i].name, bootinfo.taskmap.tasks[i].name,

            CONFIG_TASK_NAME_BUFLEN);

    }

    /* Copy boot allocations info. */

    ballocs.base = bootinfo.ballocs.base;

    ballocs.size = bootinfo.ballocs.size;

    ofw_tree_init(bootinfo.ofw_root);

}

/** Perform sparc64 specific initialization before mm is initialized. */

void arch_pre_mm_init(void)

{

    if (config.cpu_active == 1)

        trap_init();

}

/** Perform sparc64 specific initialization afterr mm is initialized. */

void arch_post_mm_init(void)

{

    if (config.cpu_active == 1) {

        /*

         * We have 2^11 different interrupt vectors.

         * But we only create 128 buckets.

         */

        irq_init(1 << 11, 128);

    }

}

void arch_post_cpu_init(void)

{

}

void arch_pre_smp_init(void)

{

}

void arch_post_smp_init(void)

{

    if (config.cpu_active == 1) {

        standalone_sparc64_console_init();

    }

}

/** Calibrate delay loop.

 *

 * On sparc64, we implement delay() by waiting for the TICK register to

 * reach a pre-computed value, as opposed to performing some pre-computed

 * amount of instructions of known duration. We set the delay_loop_const

 * to 1 in order to neutralize the multiplication done by delay().

 */

void calibrate_delay_loop(void)

{

    CPU->delay_loop_const = 1;

}

/** Wait several microseconds.

 *

 * We assume that interrupts are already disabled.

 *

 * @param t Microseconds to wait.

 */

void asm_delay_loop(const uint32_t usec)

{

    uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t)

        CPU->arch.clock_frequency / 1000000;

    while (tick_read() < stop)

        ;

}

/** Switch to userspace. */

void userspace(uspace_arg_t *kernel_uarg)

{

    switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,

        ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE

        - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),

        (uintptr_t) kernel_uarg->uspace_uarg);

    for (;;)

        ;

    /* not reached */

}

void arch_reboot(void)

{

    // TODO

    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;

}

/** @}

 */