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)
{
    if (config.cpu_active == 1)
        trap_init();
}
 
void arch_post_mm_init(void)
{
    if (config.cpu_active == 1)
        standalone_sparc64_console_init();
}
 
void arch_post_cpu_init(void)
{
}
 
void arch_pre_smp_init(void)
{
}
 
void arch_post_smp_init(void)
{
    thread_t *t;
 
    if (config.cpu_active == 1) {
        /*
             * 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 1901	Rev 1903
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 <proc/thread.h>	40	#include <proc/thread.h>
41	#include <console/console.h>	41	#include <console/console.h>
42	#include <arch/boot/boot.h>	42	#include <arch/boot/boot.h>
43	#include <arch/arch.h>	43	#include <arch/arch.h>
44	#include <arch/asm.h>	44	#include <arch/asm.h>
45	#include <arch/mm/page.h>	45	#include <arch/mm/page.h>
46	#include <arch/stack.h>	46	#include <arch/stack.h>
47	#include <genarch/ofw/ofw_tree.h>	47	#include <genarch/ofw/ofw_tree.h>
48	#include <userspace.h>	48	#include <userspace.h>
49		49
50	bootinfo_t bootinfo;	50	bootinfo_t bootinfo;
51		51
52	void arch_pre_main(void)	52	void arch_pre_main(void)
53	{	53	{
54	/* Copy init task info. */	54	/* Copy init task info. */
55	init.cnt = bootinfo.taskmap.count;	55	init.cnt = bootinfo.taskmap.count;
56		56
57	uint32_t i;	57	uint32_t i;
58		58
59	for (i = 0; i < bootinfo.taskmap.count; i++) {	59	for (i = 0; i < bootinfo.taskmap.count; i++) {
60	init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr);	60	init.tasks[i].addr = PA2KA(bootinfo.taskmap.tasks[i].addr);
61	init.tasks[i].size = bootinfo.taskmap.tasks[i].size;	61	init.tasks[i].size = bootinfo.taskmap.tasks[i].size;
62	}	62	}
63		63
64	/* Copy boot allocations info. */	64	/* Copy boot allocations info. */
65	ballocs.base = bootinfo.ballocs.base;	65	ballocs.base = bootinfo.ballocs.base;
66	ballocs.size = bootinfo.ballocs.size;	66	ballocs.size = bootinfo.ballocs.size;
67		67
68	ofw_tree_init(bootinfo.ofw_root);	68	ofw_tree_init(bootinfo.ofw_root);
69	}	69	}
70		70
71	void arch_pre_mm_init(void)	71	void arch_pre_mm_init(void)
72	{	72	{
-		73	if (config.cpu_active == 1)
73	trap_init();	74	trap_init();
74	}	75	}
75		76
76	void arch_post_mm_init(void)	77	void arch_post_mm_init(void)
77	{	78	{
-		79	if (config.cpu_active == 1)
78	standalone_sparc64_console_init();	80	standalone_sparc64_console_init();
79	}	81	}
80		82
81	void arch_post_cpu_init(void)	83	void arch_post_cpu_init(void)
82	{	84	{
83	}	85	}
84		86
85	void arch_pre_smp_init(void)	87	void arch_pre_smp_init(void)
86	{	88	{
87	}	89	}
88		90
89	void arch_post_smp_init(void)	91	void arch_post_smp_init(void)
90	{	92	{
91	thread_t *t;	93	thread_t *t;
92		94
-		95	if (config.cpu_active == 1) {
93	/*	96	/*
94	* Create thread that polls keyboard.	97	* Create thread that polls keyboard.
95	*/	98	*/
96	t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll");	99	t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll");
97	if (!t)	100	if (!t)
98	panic("cannot create kkbdpoll\n");	101	panic("cannot create kkbdpoll\n");
99	thread_ready(t);	102	thread_ready(t);
-		103	}
100	}	104	}
101		105
102	/** Calibrate delay loop.	106	/** Calibrate delay loop.
103	*	107	*
104	* On sparc64, we implement delay() by waiting for the TICK register to	108	* On sparc64, we implement delay() by waiting for the TICK register to
105	* reach a pre-computed value, as opposed to performing some pre-computed	109	* reach a pre-computed value, as opposed to performing some pre-computed
106	* amount of instructions of known duration. We set the delay_loop_const	110	* amount of instructions of known duration. We set the delay_loop_const
107	* to 1 in order to neutralize the multiplication done by delay().	111	* to 1 in order to neutralize the multiplication done by delay().
108	*/	112	*/
109	void calibrate_delay_loop(void)	113	void calibrate_delay_loop(void)
110	{	114	{
111	CPU->delay_loop_const = 1;	115	CPU->delay_loop_const = 1;
112	}	116	}
113		117
114	/** Wait several microseconds.	118	/** Wait several microseconds.
115	*	119	*
116	* We assume that interrupts are already disabled.	120	* We assume that interrupts are already disabled.
117	*	121	*
118	* @param t Microseconds to wait.	122	* @param t Microseconds to wait.
119	*/	123	*/
120	void asm_delay_loop(const uint32_t usec)	124	void asm_delay_loop(const uint32_t usec)
121	{	125	{
122	uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t) CPU->arch.clock_frequency / 1000000;	126	uint64_t stop = tick_read() + (uint64_t) usec * (uint64_t) CPU->arch.clock_frequency / 1000000;
123		127
124	while (tick_read() < stop)	128	while (tick_read() < stop)
125	;	129	;
126	}	130	}
127		131
128	/** Switch to userspace. */	132	/** Switch to userspace. */
129	void userspace(uspace_arg_t *kernel_uarg)	133	void userspace(uspace_arg_t *kernel_uarg)
130	{	134	{
131	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,	135	switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
132	((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE	136	((uintptr_t) kernel_uarg->uspace_stack) + STACK_SIZE
133	- (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),	137	- (ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT) + STACK_BIAS),
134	(uintptr_t) kernel_uarg->uspace_uarg);	138	(uintptr_t) kernel_uarg->uspace_uarg);
135		139
136	for (;;)	140	for (;;)
137	;	141	;
138	/* not reached */	142	/* not reached */
139	}	143	}
140		144
141	/** @}	145	/** @}
142	*/	146	*/
143		147

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(root)/trunk/kernel/arch/sparc64/src/sparc64.c – Rev 1901 → 1903