WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ia64/src/ia64.c


/*
 * 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) {
        ;
    }
}
 

Rev 938	Rev 962
1	/*	1	/*
2	* Copyright (C) 2005 Jakub Jermar	2	* Copyright (C) 2005 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <arch.h>	29	#include <arch.h>
30	#include <arch/ski/ski.h>	30	#include <arch/ski/ski.h>
31	#include <arch/drivers/it.h>	31	#include <arch/drivers/it.h>
32	#include <arch/interrupt.h>	32	#include <arch/interrupt.h>
33	#include <arch/barrier.h>	33	#include <arch/barrier.h>
34	#include <arch/asm.h>	34	#include <arch/asm.h>
35	#include <arch/register.h>	35	#include <arch/register.h>
36	#include <arch/types.h>	36	#include <arch/types.h>
37	#include <arch/context.h>	37	#include <arch/context.h>
-		38	#include <arch/stack.h>
38	#include <arch/mm/page.h>	39	#include <arch/mm/page.h>
39	#include <mm/as.h>	40	#include <mm/as.h>
40	#include <config.h>	41	#include <config.h>
41	#include <userspace.h>	42	#include <userspace.h>
42	#include <console/console.h>	43	#include <console/console.h>
43		44
44	void arch_pre_mm_init(void)	45	void arch_pre_mm_init(void)
45	{	46	{
46	/* Set Interruption Vector Address (i.e. location of interruption vector table). */	47	/* Set Interruption Vector Address (i.e. location of interruption vector table). */
47	iva_write((__address) &ivt);	48	iva_write((__address) &ivt);
48	srlz_d();	49	srlz_d();
49		50
50	ski_init_console();	51	ski_init_console();
51	it_init();	52	it_init();
52	config.init_addr = INIT_ADDRESS;	53	config.init_addr = INIT_ADDRESS;
53	config.init_size = INIT_SIZE;	54	config.init_size = INIT_SIZE;
54	}	55	}
55		56
56	void arch_post_mm_init(void)	57	void arch_post_mm_init(void)
57	{	58	{
58	}	59	}
59		60
60	void arch_pre_smp_init(void)	61	void arch_pre_smp_init(void)
61	{	62	{
62	}	63	}
63		64
64	void arch_post_smp_init(void)	65	void arch_post_smp_init(void)
65	{	66	{
66	}	67	}
67		68
68	/** Enter userspace and never return. */	69	/** Enter userspace and never return. */
69	void userspace(__address entry)	70	void userspace(__address entry)
70	{	71	{
71	psr_t psr;	72	psr_t psr;
72	rsc_t rsc;	73	rsc_t rsc;
73		74
74	psr.value = psr_read();	75	psr.value = psr_read();
75	psr.cpl = PL_USER;	76	psr.cpl = PL_USER;
76	psr.i = true; /* start with interrupts enabled */	77	psr.i = true; /* start with interrupts enabled */
77	psr.ic = true;	78	psr.ic = true;
78	psr.ri = 0; /* start with instruction #0 */	79	psr.ri = 0; /* start with instruction #0 */
79		80
80	__asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));	81	__asm__ volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
81	rsc.loadrs = 0;	82	rsc.loadrs = 0;
82	rsc.be = false;	83	rsc.be = false;
83	rsc.pl = PL_USER;	84	rsc.pl = PL_USER;
84	rsc.mode = 3; /* eager mode */	85	rsc.mode = 3; /* eager mode */
85		86
86	switch_to_userspace(entry, USTACK_ADDRESS+PAGE_SIZE-1, USTACK_ADDRESS, psr.value, rsc.value);	87	switch_to_userspace(entry, USTACK_ADDRESS+PAGE_SIZE-ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT), USTACK_ADDRESS, psr.value, rsc.value);
87		88
88	while (1) {	89	while (1) {
89	;	90	;
90	}	91	}
91	}	92	}
92		93

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ia64/src/ia64.c – Rev 938 → 962