0,0 → 1,92 |
/* |
* 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. |
*/ |
|
#include <arch.h> |
#include <arch/ski/ski.h> |
#include <arch/drivers/it.h> |
#include <arch/interrupt.h> |
#include <arch/barrier.h> |
#include <arch/asm.h> |
#include <arch/register.h> |
#include <arch/types.h> |
#include <arch/context.h> |
#include <arch/stack.h> |
#include <arch/mm/page.h> |
#include <mm/as.h> |
#include <config.h> |
#include <userspace.h> |
#include <console/console.h> |
|
void arch_pre_mm_init(void) |
{ |
/* Set Interruption Vector Address (i.e. location of interruption vector table). */ |
iva_write((__address) &ivt); |
srlz_d(); |
|
ski_init_console(); |
it_init(); |
config.init_addr = INIT_ADDRESS; |
config.init_size = INIT_SIZE; |
} |
|
void arch_post_mm_init(void) |
{ |
} |
|
void arch_pre_smp_init(void) |
{ |
} |
|
void arch_post_smp_init(void) |
{ |
} |
|
/** Enter userspace and never return. */ |
void userspace(__address entry) |
{ |
psr_t psr; |
rsc_t rsc; |
|
psr.value = psr_read(); |
psr.cpl = PL_USER; |
psr.i = true; /* start with interrupts enabled */ |
psr.ic = true; |
psr.ri = 0; /* start with instruction #0 */ |
|
__asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value)); |
rsc.loadrs = 0; |
rsc.be = false; |
rsc.pl = PL_USER; |
rsc.mode = 3; /* eager mode */ |
|
switch_to_userspace(entry, USTACK_ADDRESS+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT), USTACK_ADDRESS, psr.value, rsc.value); |
|
while (1) { |
; |
} |
} |