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36 jermar 1 
/*
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 * Copyright (C) 2005 Jakub Jermar
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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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1888 jermar 29 
/** @addtogroup ia64
1702 cejka 30 
 * @{
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 */
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/** @file
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 */
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78 jermar 35 
#include <arch.h>
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#include <arch/ski/ski.h>
435 jermar 37 
#include <arch/drivers/it.h>
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#include <arch/interrupt.h>
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#include <arch/barrier.h>
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#include <arch/asm.h>
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#include <arch/register.h>
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#include <arch/types.h>
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#include <arch/context.h>
962 jermar 44 
#include <arch/stack.h>
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#include <arch/mm/page.h>
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#include <mm/as.h>
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#include <config.h>
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#include <userspace.h>
519 vana 49 
#include <console/console.h>
1078 jermar 50 
#include <proc/uarg.h>
1121 jermar 51 
#include <syscall/syscall.h>
519 vana 52 
 
1548 vana 53 
static int kbd_release=0;
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1223 jermar 55 
void arch_pre_main(void)
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{
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    /* Setup usermode init tasks. */
1601 jermar 58 
    init.cnt = 8;
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    init.tasks[0].addr = INIT0_ADDRESS;
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    init.tasks[0].size = INIT0_SIZE;
1495 jermar 61 
    init.tasks[1].addr = INIT0_ADDRESS + 0x400000;
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    init.tasks[1].size = INIT0_SIZE;
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    init.tasks[2].addr = INIT0_ADDRESS + 0x800000;
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    init.tasks[2].size = INIT0_SIZE;
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    init.tasks[3].addr = INIT0_ADDRESS + 0xc00000;
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    init.tasks[3].size = INIT0_SIZE;
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    init.tasks[4].addr = INIT0_ADDRESS + 0x1000000;
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    init.tasks[4].size = INIT0_SIZE;
1541 jermar 69 
    init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
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    init.tasks[5].size = INIT0_SIZE;
1601 jermar 71 
    init.tasks[6].addr = INIT0_ADDRESS + 0x1800000;
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    init.tasks[6].size = INIT0_SIZE;
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    init.tasks[7].addr = INIT0_ADDRESS + 0x1c00000;
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    init.tasks[7].size = INIT0_SIZE;
1223 jermar 75 
}
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78 jermar 77 
void arch_pre_mm_init(void)
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{
470 jermar 79 
    /* Set Interruption Vector Address (i.e. location of interruption vector table). */
1780 jermar 80 
    iva_write((uintptr_t) &ivt);
470 jermar 81 
    srlz_d();
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102 jermar 83 
    ski_init_console();
1223 jermar 84 
    it_init(); 
78 jermar 85 
}
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void arch_post_mm_init(void)
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{
1507 vana 89 
    ski_set_console_sysinfo();
78 jermar 90 
}
503 jermar 91 
 
1901 jermar 92 
void arch_post_cpu_init(void)
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{
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}
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503 jermar 96 
void arch_pre_smp_init(void)
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{
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}
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void arch_post_smp_init(void)
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{
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}
919 jermar 103 
 
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/** Enter userspace and never return. */
1078 jermar 105 
void userspace(uspace_arg_t *kernel_uarg)
919 jermar 106 
{
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    psr_t psr;
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    rsc_t rsc;
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    psr.value = psr_read();
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    psr.cpl = PL_USER;
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    psr.i = true;               /* start with interrupts enabled */
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    psr.ic = true;
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    psr.ri = 0;             /* start with instruction #0 */
993 jermar 115 
    psr.bn = 1;             /* start in bank 0 */
919 jermar 116 
 
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    __asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
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    rsc.loadrs = 0;
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    rsc.be = false;
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    rsc.pl = PL_USER;
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    rsc.mode = 3;               /* eager mode */
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1780 jermar 123 
    switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
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                ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
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                ((uintptr_t) kernel_uarg->uspace_stack)+PAGE_SIZE,
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                (uintptr_t) kernel_uarg->uspace_uarg,
1078 jermar 127 
                psr.value, rsc.value);
919 jermar 128 
 
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    while (1) {
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        ;
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    }
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}
1121 jermar 133 
 
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/** Set thread-local-storage pointer.
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 *
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 * We use r13 (a.k.a. tp) for this purpose.
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 */
1780 jermar 138 
unative_t sys_tls_set(unative_t addr)
1121 jermar 139 
{
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        return 0;
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}
1474 palkovsky 142 
 
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/** Acquire console back for kernel
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 *
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 */
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void arch_grab_console(void)
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{
1548 vana 148 
    kbd_release=kbd_uspace;
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    kbd_uspace=0;
1474 palkovsky 150 
}
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/** Return console to userspace
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 *
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 */
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void arch_release_console(void)
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{
1548 vana 156 
    kbd_uspace=kbd_release;
1474 palkovsky 157 
}
1702 cejka 158 
 
1888 jermar 159 
/** @}
1702 cejka 160 
 */