WebSVN – HelenOS – Diff – /trunk/kernel/arch/sparc64/src/sparc64.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.
 */
 
/** @addtogroup sparc64
 * @{
 */
/** @file
 */
 
#include <arch.h>
#include <debug.h>
#include <config.h>
#include <arch/trap/trap.h>
#include <arch/console.h>
 
#include <proc/thread.h>
#include <console/console.h>
#include <arch/boot/boot.h>
#include <arch/arch.h>
#include <arch/asm.h>
#include <arch/mm/page.h>
#include <arch/stack.h>
#include <genarch/ofw/ofw_tree.h>
#include <userspace.h>
 
bootinfo_t bootinfo;
 
void arch_pre_main(void)
{
    /* Copy init task info. */
    init.cnt = bootinfo.taskmap.count;
   
    uint32_t i;
 
    for (i = 0; i < bootinfo.taskmap.count; i++) {
        init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr);
        init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
    }
   
    /* Copy boot allocations info. */
    ballocs.base = bootinfo.ballocs.base;
    ballocs.size = bootinfo.ballocs.size;
   
    ofw_tree_init(bootinfo.ofw_root);
}
 
void arch_pre_mm_init(void)
{
    trap_init();
 
}
 
void arch_post_mm_init(void)
{
    standalone_sparc64_console_init();
}
 
void arch_pre_smp_init(void)
{
}
 
void arch_post_smp_init(void)
{
    thread_t *t;
 
    /*
         * Create thread that polls keyboard.
         */
    t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll");
    if (!t)
        panic("cannot create kkbdpoll\n");
    thread_ready(t);
}
 
/** Calibrate delay loop.
 *
 * On sparc64, we implement delay() by waiting for the TICK register to
 * reach a pre-computed value, as opposed to performing some pre-computed
 * amount of instructions of known duration. We set the delay_loop_const
 * to 1 in order to neutralize the multiplication done by delay().
 */
void calibrate_delay_loop(void)
{
    CPU->delay_loop_const = 1;
}
 
/** Wait several microseconds.
 *
 * We assume that interrupts are already disabled.
 *
 * @param t Microseconds to wait.
 */
void asm_delay_loop(const uint32_t usec)
{
    uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t) CPU->arch.clock_frequency / 1000000;
 
    while (tick_read() < stop)
        ;
}
 
/** Switch to userspace. */
void userspace(uspace_arg_t *kernel_uarg)
{
    switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
        ((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
        - (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
        (uintptr_t) kernel_uarg->uspace_uarg);
 
    for (;;)
        ;
    /* not reached */
}
 
/** @}
 */
 

Rev 1895	Rev 1899
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	/** @addtogroup sparc64	29	/** @addtogroup sparc64
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch.h>	35	#include <arch.h>
36	#include <debug.h>	36	#include <debug.h>
37	#include <config.h>	37	#include <config.h>
38	#include <arch/trap/trap.h>	38	#include <arch/trap/trap.h>
39	#include <arch/console.h>	39	#include <arch/console.h>
40	#include <arch/drivers/tick.h>	-
41	#include <proc/thread.h>	40	#include <proc/thread.h>
42	#include <console/console.h>	41	#include <console/console.h>
43	#include <arch/boot/boot.h>	42	#include <arch/boot/boot.h>
44	#include <arch/arch.h>	43	#include <arch/arch.h>
45	#include <arch/asm.h>	44	#include <arch/asm.h>
46	#include <arch/mm/page.h>	45	#include <arch/mm/page.h>
47	#include <arch/stack.h>	46	#include <arch/stack.h>
48	#include <genarch/ofw/ofw_tree.h>	47	#include <genarch/ofw/ofw_tree.h>
49	#include <userspace.h>	48	#include <userspace.h>
50		49
51	bootinfo_t bootinfo;	50	bootinfo_t bootinfo;
52		51
53	void arch_pre_main(void)	52	void arch_pre_main(void)
54	{	53	{
55	/* Copy init task info. */	54	/* Copy init task info. */
56	init.cnt = bootinfo.taskmap.count;	55	init.cnt = bootinfo.taskmap.count;
57		56
58	uint32_t i;	57	uint32_t i;
59		58
60	for (i = 0; i < bootinfo.taskmap.count; i++) {	59	for (i = 0; i < bootinfo.taskmap.count; i++) {
61	init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr);	60	init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr);
62	init.tasks[i].size = bootinfo.taskmap.tasks[i].size;	61	init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
63	}	62	}
64		63
65	/* Copy boot allocations info. */	64	/* Copy boot allocations info. */
66	ballocs.base = bootinfo.ballocs.base;	65	ballocs.base = bootinfo.ballocs.base;
67	ballocs.size = bootinfo.ballocs.size;	66	ballocs.size = bootinfo.ballocs.size;
68		67
69	ofw_tree_init(bootinfo.ofw_root);	68	ofw_tree_init(bootinfo.ofw_root);
70	}	69	}
71		70
72	void arch_pre_mm_init(void)	71	void arch_pre_mm_init(void)
73	{	72	{
74	trap_init();	73	trap_init();
75	tick_init();	-
76	}	74	}
77		75
78	void arch_post_mm_init(void)	76	void arch_post_mm_init(void)
79	{	77	{
80	standalone_sparc64_console_init();	78	standalone_sparc64_console_init();
81	}	79	}
82		80
83	void arch_pre_smp_init(void)	81	void arch_pre_smp_init(void)
84	{	82	{
85	}	83	}
86		84
87	void arch_post_smp_init(void)	85	void arch_post_smp_init(void)
88	{	86	{
89	thread_t *t;	87	thread_t *t;
90		88
91	/*	89	/*
92	* Create thread that polls keyboard.	90	* Create thread that polls keyboard.
93	*/	91	*/
94	t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll");	92	t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll");
95	if (!t)	93	if (!t)
96	panic("cannot create kkbdpoll\n");	94	panic("cannot create kkbdpoll\n");
97	thread_ready(t);	95	thread_ready(t);
98	}	96	}
99		97
100	/** Calibrate delay loop.	98	/** Calibrate delay loop.
101	*	99	*
102	* On sparc64, we implement delay() by waiting for the TICK register to	100	* On sparc64, we implement delay() by waiting for the TICK register to
103	* reach a pre-computed value, as opposed to performing some pre-computed	101	* reach a pre-computed value, as opposed to performing some pre-computed
104	* amount of instructions of known duration. We set the delay_loop_const	102	* amount of instructions of known duration. We set the delay_loop_const
105	* to 1 in order to neutralize the multiplication done by delay().	103	* to 1 in order to neutralize the multiplication done by delay().
106	*/	104	*/
107	void calibrate_delay_loop(void)	105	void calibrate_delay_loop(void)
108	{	106	{
109	CPU->delay_loop_const = 1;	107	CPU->delay_loop_const = 1;
110	}	108	}
111		109
112	/** Wait several microseconds.	110	/** Wait several microseconds.
113	*	111	*
114	* We assume that interrupts are already disabled.	112	* We assume that interrupts are already disabled.
115	*	113	*
116	* @param t Microseconds to wait.	114	* @param t Microseconds to wait.
117	*/	115	*/
118	void asm_delay_loop(const uint32_t usec)	116	void asm_delay_loop(const uint32_t usec)
119	{	117	{
120	uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t) CPU->arch.clock_frequency / 1000000;	118	uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t) CPU->arch.clock_frequency / 1000000;
121		119
122	while (tick_read() < stop)	120	while (tick_read() < stop)
123	;	121	;
124	}	122	}
125		123
126	/** Switch to userspace. */	124	/** Switch to userspace. */
127	void userspace(uspace_arg_t *kernel_uarg)	125	void userspace(uspace_arg_t *kernel_uarg)
128	{	126	{
129	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,	127	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
130	((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE	128	((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
131	- (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),	129	- (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
132	(uintptr_t) kernel_uarg->uspace_uarg);	130	(uintptr_t) kernel_uarg->uspace_uarg);
133		131
134	for (;;)	132	for (;;)
135	;	133	;
136	/* not reached */	134	/* not reached */
137	}	135	}
138		136
139	/** @}	137	/** @}
140	*/	138	*/
141		139

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(root)/trunk/kernel/arch/sparc64/src/sparc64.c – Rev 1895 → 1899