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2128 jermar 1 
/*
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 * Copyright (c) 2007 Michal Kebrt
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup arm32
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 * @{
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 */
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/** @file
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 *  @brief ARM32 architecture specific functions.
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 */
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#include <arch.h>
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#include <arch/boot.h>
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#include <config.h>
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#include <arch/console.h>
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#include <ddi/device.h>
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#include <genarch/fb/fb.h>
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#include <genarch/fb/visuals.h>
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#include <ddi/irq.h>
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#include <arch/debug/print.h>
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#include <print.h>
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#include <config.h>
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#include <interrupt.h>
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#include <arch/regutils.h>
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#include <arch/machine.h>
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#include <userspace.h>
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/** Information about loaded tasks. */
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bootinfo_t bootinfo;
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/** Performs arm32 specific initialization before main_bsp() is called. */
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void arch_pre_main(void)
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{
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    int i;
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    init.cnt = bootinfo.cnt;
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    for (i = 0; i < bootinfo.cnt; ++i) {
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        init.tasks[i].addr = bootinfo.tasks[i].addr;
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        init.tasks[i].size = bootinfo.tasks[i].size;
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    }
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}
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/** Performs arm32 specific initialization before mm is initialized. */
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void arch_pre_mm_init(void)
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{
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    /* It is not assumed by default */
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    interrupts_disable();
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}
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/** Performs arm32 specific initialization afterr mm is initialized. */
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void arch_post_mm_init(void)
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{
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    machine_hw_map_init();
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    /* Initialize exception dispatch table */
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    exception_init();
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    interrupt_init();
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    console_init(device_assign_devno());
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#ifdef CONFIG_FB
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    fb_init(machine_get_fb_address(), 640, 480, 1920, VISUAL_RGB_8_8_8);
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#endif
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}
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/** Performs arm32 specific tasks needed after cpu is initialized.
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 *
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 * Currently the function is empty.
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 */
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void arch_post_cpu_init(void)
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{
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}
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/** Performs arm32 specific tasks needed before the multiprocessing is
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 * initialized.
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 *
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 * Currently the function is empty because SMP is not supported.
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 */
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void arch_pre_smp_init(void)
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{
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}
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/** Performs arm32 specific tasks needed after the multiprocessing is
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 * initialized.
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 *
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 * Currently the function is empty because SMP is not supported.
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 */
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void arch_post_smp_init(void)
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{
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}
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/** Performs arm32 specific tasks needed before the new task is run. */
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void before_task_runs_arch(void)
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{
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    tlb_invalidate_all();
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}
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/** Performs arm32 specific tasks needed before the new thread is scheduled.
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 *
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 * It sets supervisor_sp.
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 */
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void before_thread_runs_arch(void)
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{
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    uint8_t *stck;
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    stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
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    supervisor_sp = (uintptr_t) stck;
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}
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/** Performs arm32 specific tasks before a thread stops running.
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 *
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 * Currently the function is empty.
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 */
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void after_thread_ran_arch(void)
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{
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}
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/** Halts CPU. */
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void cpu_halt(void)
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{
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    machine_cpu_halt();
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}
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/** Reboot. */
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void arch_reboot()
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{
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    /* not implemented */
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    for (;;)
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        ;
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}
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/** @}
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 */