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36 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2005 Jakub Jermar
36 jermar 3
 * 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 ia64
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 * @{
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 */
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/** @file
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 */
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#include <arch.h>
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#include <arch/ski/ski.h>
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#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>
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#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>
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#include <console/console.h>
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#include <proc/uarg.h>
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#include <syscall/syscall.h>
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#include <ddi/irq.h>
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#include <arch/drivers/ega.h>
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void arch_pre_main(void)
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{
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    /* Setup usermode init tasks. */
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    init.cnt = 8;
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    init.tasks[0].addr = INIT0_ADDRESS;
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    init.tasks[0].size = INIT0_SIZE;
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    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;
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    init.tasks[5].addr = INIT0_ADDRESS + 0x1400000;
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    init.tasks[5].size = INIT0_SIZE;
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    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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{
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    /* Set Interruption Vector Address (i.e. location of interruption vector table). */
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    iva_write((uintptr_t) &ivt);
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    srlz_d();
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}
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void arch_post_mm_init(void)
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{
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    irq_init(INR_COUNT, INR_COUNT);
2064 vana 88
#ifdef SKI
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    ski_init_console();
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#else   
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    ega_init();
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#endif  
1942 jermar 93
    it_init(); 
78 jermar 94
}
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1901 jermar 96
void arch_post_cpu_init(void)
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{
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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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void arch_post_smp_init(void)
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{
1945 jermar 106
 
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    if (config.cpu_active == 1) {
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        /*
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         * Create thread that polls keyboard.
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         */
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#ifdef SKI
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        thread_t *t;
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        t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
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        if (!t)
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            panic("cannot create kkbdpoll\n");
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        thread_ready(t);
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#endif      
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    }
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}
919 jermar 120
 
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/** Enter userspace and never return. */
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void userspace(uspace_arg_t *kernel_uarg)
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{
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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 132
    psr.bn = 1;             /* start in bank 0 */
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2082 decky 134
    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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    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,
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                psr.value, rsc.value);
919 jermar 145
 
146
    while (1) {
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        ;
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    }
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}
1121 jermar 150
 
151
/** 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 155
unative_t sys_tls_set(unative_t addr)
1121 jermar 156
{
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        return 0;
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}
1474 palkovsky 159
 
160
/** 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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{
2064 vana 165
#ifdef SKI
1942 jermar 166
    ski_kbd_grab();
2064 vana 167
#endif  
1474 palkovsky 168
}
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/** Return console to userspace
170
 *
171
 */
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void arch_release_console(void)
173
{
2064 vana 174
#ifdef SKI
1942 jermar 175
    ski_kbd_release();
2064 vana 176
#endif
1474 palkovsky 177
}
1702 cejka 178
 
1888 jermar 179
/** @}
1702 cejka 180
 */