WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/src/main/main.c


/*
 * Copyright (C) 2001-2004 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.
 */
 
/**
 * @file    main.c
 * @brief   Main initialization kernel function for all processors.
 *
 * During kernel boot, all processors, after architecture dependent
 * initialization, start executing code found in this file. After
 * bringing up all subsystems, control is passed to scheduler().
 *
 * The bootstrap processor starts executing main_bsp() while
 * the application processors start executing main_ap().
 *
 * @see scheduler()
 * @see main_bsp()
 * @see main_ap()
 */
 
#include <arch/asm.h>
#include <context.h>
#include <print.h>
#include <panic.h>
#include <debug.h>
#include <config.h>
#include <time/clock.h>
#include <proc/scheduler.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <main/kinit.h>
#include <main/version.h>
#include <console/kconsole.h>
#include <cpu.h>
#include <align.h>
#include <interrupt.h>
#include <arch/mm/memory_init.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <genarch/mm/page_pt.h>
#include <mm/tlb.h>
#include <mm/as.h>
#include <mm/slab.h>
#include <synch/waitq.h>
#include <synch/futex.h>
#include <arch/arch.h>
#include <arch.h>
#include <arch/faddr.h>
#include <typedefs.h>
#include <ipc/ipc.h>
#include <macros.h>
#include <adt/btree.h>
 
#ifdef CONFIG_SMP
#include <arch/smp/apic.h>
#include <arch/smp/mps.h>
#endif /* CONFIG_SMP */
#include <smp/smp.h>
 
config_t config;    /**< Global configuration structure. */
init_t init = {0};      /**< Initial user-space tasks */
 
context_t ctx;
 
/**
 * These 'hardcoded' variables will be intialized by
 * the linker or the low level assembler code with
 * appropriate sizes and addresses.
 */
__address hardcoded_load_address = 0;
size_t hardcoded_ktext_size = 0;
size_t hardcoded_kdata_size = 0;
 
void main_bsp(void);
void main_ap(void);
 
/*
 * These two functions prevent stack from underflowing during the
 * kernel boot phase when SP is set to the very top of the reserved
 * space. The stack could get corrupted by a fooled compiler-generated
 * pop sequence otherwise.
 */
static void main_bsp_separated_stack(void);
#ifdef CONFIG_SMP
static void main_ap_separated_stack(void);
#endif
 
#define CONFIG_STACK_SIZE   ((1<<STACK_FRAMES)*STACK_SIZE)
 
/** Main kernel routine for bootstrap CPU.
 *
 * Initializes the kernel by bootstrap CPU.
 * This function passes control directly to
 * main_bsp_separated_stack().
 *
 * Assuming interrupts_disable().
 *
 */
void main_bsp(void)
{
    __address stackaddr;
 
    config.cpu_count = 1;
    config.cpu_active = 1;
   
    config.base = hardcoded_load_address;
    config.memory_size = get_memory_size();
   
    config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
    stackaddr = config.base + config.kernel_size;
   
    /* Avoid placing kernel on top of init */
    count_t i;
    bool overlap = false;
    for (i = 0; i < init.cnt; i++)
        if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
            stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
            init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
            overlap = true;
        }
   
    if (!overlap)
        config.kernel_size += CONFIG_STACK_SIZE;
   
    context_save(&ctx);
    context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);
    context_restore(&ctx);
    /* not reached */
}
 
 
/** Main kernel routine for bootstrap CPU using new stack.
 *
 * Second part of main_bsp().
 *
 */
void main_bsp_separated_stack(void)
{
    task_t *k;
    thread_t *t;
    count_t i;
   
    the_initialize(THE);
 
    /*
     * kconsole data structures must be initialized very early
     * because other subsystems will register their respective
     * commands.
     */
    kconsole_init();
   
    /*
     * Exception handler initialization, before architecture
     * starts adding its own handlers
     */
    exc_init();
 
    /*
     * Memory management subsystems initialization.
     */
    arch_pre_mm_init();
    frame_init();       /* Initialize at least 1 memory segment big enough for slab to work */
    slab_cache_init();
    btree_init();
    as_init();
    page_init();
    tlb_init();
    arch_post_mm_init();   
 
    version_print();
    printf("%.*p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(__address) * 2, config.base, hardcoded_ktext_size / 1024, hardcoded_kdata_size / 1024);
 
    arch_pre_smp_init();
    smp_init();
   
    slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
 
    printf("config.memory_size=%zdM\n", config.memory_size/(1024*1024));
    printf("config.cpu_count=%zd\n", config.cpu_count);
    cpu_init();
   
    calibrate_delay_loop();
    timeout_init();
    scheduler_init();
    task_init();
    thread_init();
    futex_init();
   
    for (i = 0; i < init.cnt; i++)
        printf("init[%zd].addr=%.*p, init[%zd].size=%zd\n", i, sizeof(__address)*2, init.tasks[i].addr, i, init.tasks[i].size);
   
    ipc_init();
 
    /*
     * Create kernel task.
     */
    k = task_create(AS_KERNEL, "KERNEL");
    if (!k)
        panic("can't create kernel task\n");
   
    /*
     * Create the first thread.
     */
    t = thread_create(kinit, NULL, k, 0, "kinit");
    if (!t)
        panic("can't create kinit thread\n");
    thread_ready(t);
   
    /*
     * This call to scheduler() will return to kinit,
     * starting the thread of kernel threads.
     */
    scheduler();
    /* not reached */
}
 
 
#ifdef CONFIG_SMP
/** Main kernel routine for application CPUs.
 *
 * Executed by application processors, temporary stack
 * is at ctx.sp which was set during BP boot.
 * This function passes control directly to
 * main_ap_separated_stack().
 *
 * Assuming interrupts_disable()'d.
 *
 */
void main_ap(void)
{
    /*
     * Incrementing the active CPU counter will guarantee that the
     * pm_init() will not attempt to build GDT and IDT tables again.
     * Neither frame_init() will do the complete thing. Neither cpu_init()
     * will do.
     */
    config.cpu_active++;
 
    /*
     * The THE structure is well defined because ctx.sp is used as stack.
     */
    the_initialize(THE);
   
    arch_pre_mm_init();
    frame_init();
    page_init();
    tlb_init();
    arch_post_mm_init();
   
    cpu_init();
   
    calibrate_delay_loop();
 
    l_apic_init();
    l_apic_debug();
 
    the_copy(THE, (the_t *) CPU->stack);
 
    /*
     * If we woke kmp up before we left the kernel stack, we could
     * collide with another CPU coming up. To prevent this, we
     * switch to this cpu's private stack prior to waking kmp up.
     */
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
    context_restore(&CPU->saved_context);
    /* not reached */
}
 
 
/** Main kernel routine for application CPUs using new stack.
 *
 * Second part of main_ap().
 *
 */
void main_ap_separated_stack(void)
{
    /*
     * Configure timeouts for this cpu.
     */
    timeout_init();
 
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
    scheduler();
    /* not reached */
}
#endif /* CONFIG_SMP */
 

Rev 1229	Rev 1248
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 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	/**
-		30	* @file main.c
-		31	* @brief Main initialization kernel function for all processors.
-		32	*
-		33	* During kernel boot, all processors, after architecture dependent
-		34	* initialization, start executing code found in this file. After
-		35	* bringing up all subsystems, control is passed to scheduler().
-		36	*
-		37	* The bootstrap processor starts executing main_bsp() while
-		38	* the application processors start executing main_ap().
-		39	*
-		40	* @see scheduler()
-		41	* @see main_bsp()
-		42	* @see main_ap()
-		43	*/
-		44
29	#include <arch/asm.h>	45	#include <arch/asm.h>
30	#include <context.h>	46	#include <context.h>
31	#include <print.h>	47	#include <print.h>
32	#include <panic.h>	48	#include <panic.h>
33	#include <debug.h>	49	#include <debug.h>
34	#include <config.h>	50	#include <config.h>
35	#include <time/clock.h>	51	#include <time/clock.h>
36	#include <proc/scheduler.h>	52	#include <proc/scheduler.h>
37	#include <proc/thread.h>	53	#include <proc/thread.h>
38	#include <proc/task.h>	54	#include <proc/task.h>
39	#include <main/kinit.h>	55	#include <main/kinit.h>
40	#include <main/version.h>	56	#include <main/version.h>
41	#include <console/kconsole.h>	57	#include <console/kconsole.h>
42	#include <cpu.h>	58	#include <cpu.h>
43	#include <align.h>	59	#include <align.h>
44	#include <interrupt.h>	60	#include <interrupt.h>
45	#include <arch/mm/memory_init.h>	61	#include <arch/mm/memory_init.h>
46	#include <mm/frame.h>	62	#include <mm/frame.h>
47	#include <mm/page.h>	63	#include <mm/page.h>
48	#include <genarch/mm/page_pt.h>	64	#include <genarch/mm/page_pt.h>
49	#include <mm/tlb.h>	65	#include <mm/tlb.h>
50	#include <mm/as.h>	66	#include <mm/as.h>
51	#include <mm/slab.h>	67	#include <mm/slab.h>
52	#include <synch/waitq.h>	68	#include <synch/waitq.h>
53	#include <synch/futex.h>	69	#include <synch/futex.h>
54	#include <arch/arch.h>	70	#include <arch/arch.h>
55	#include <arch.h>	71	#include <arch.h>
56	#include <arch/faddr.h>	72	#include <arch/faddr.h>
57	#include <typedefs.h>	73	#include <typedefs.h>
58	#include <ipc/ipc.h>	74	#include <ipc/ipc.h>
59	#include <macros.h>	75	#include <macros.h>
60	#include <adt/btree.h>	76	#include <adt/btree.h>
61		77
62	#ifdef CONFIG_SMP	78	#ifdef CONFIG_SMP
63	#include <arch/smp/apic.h>	79	#include <arch/smp/apic.h>
64	#include <arch/smp/mps.h>	80	#include <arch/smp/mps.h>
65	#endif /* CONFIG_SMP */	81	#endif /* CONFIG_SMP */
66	#include <smp/smp.h>	82	#include <smp/smp.h>
67		83
68	config_t config; /*< Global configuration structure. /	84	config_t config; /*< Global configuration structure. /
69	init_t init = {0}; /*< Initial user-space tasks /	85	init_t init = {0}; /*< Initial user-space tasks /
70		86
71	context_t ctx;	87	context_t ctx;
72		88
73	/**	89	/**
74	* These 'hardcoded' variables will be intialized by	90	* These 'hardcoded' variables will be intialized by
75	* the linker or the low level assembler code with	91	* the linker or the low level assembler code with
76	* appropriate sizes and addresses.	92	* appropriate sizes and addresses.
77	*/	93	*/
78	__address hardcoded_load_address = 0;	94	__address hardcoded_load_address = 0;
79	size_t hardcoded_ktext_size = 0;	95	size_t hardcoded_ktext_size = 0;
80	size_t hardcoded_kdata_size = 0;	96	size_t hardcoded_kdata_size = 0;
81		97
82	void main_bsp(void);	98	void main_bsp(void);
83	void main_ap(void);	99	void main_ap(void);
84		100
85	/*	101	/*
86	* These two functions prevent stack from underflowing during the	102	* These two functions prevent stack from underflowing during the
87	* kernel boot phase when SP is set to the very top of the reserved	103	* kernel boot phase when SP is set to the very top of the reserved
88	* space. The stack could get corrupted by a fooled compiler-generated	104	* space. The stack could get corrupted by a fooled compiler-generated
89	* pop sequence otherwise.	105	* pop sequence otherwise.
90	*/	106	*/
91	static void main_bsp_separated_stack(void);	107	static void main_bsp_separated_stack(void);
92	#ifdef CONFIG_SMP	108	#ifdef CONFIG_SMP
93	static void main_ap_separated_stack(void);	109	static void main_ap_separated_stack(void);
94	#endif	110	#endif
95		111
96	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)	112	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)
97		113
98	/** Main kernel routine for bootstrap CPU.	114	/** Main kernel routine for bootstrap CPU.
99	*	115	*
100	* Initializes the kernel by bootstrap CPU.	116	* Initializes the kernel by bootstrap CPU.
101	* This function passes control directly to	117	* This function passes control directly to
102	* main_bsp_separated_stack().	118	* main_bsp_separated_stack().
103	*	119	*
104	* Assuming interrupts_disable().	120	* Assuming interrupts_disable().
105	*	121	*
106	*/	122	*/
107	void main_bsp(void)	123	void main_bsp(void)
108	{	124	{
109	__address stackaddr;	125	__address stackaddr;
110		126
111	config.cpu_count = 1;	127	config.cpu_count = 1;
112	config.cpu_active = 1;	128	config.cpu_active = 1;
113		129
114	config.base = hardcoded_load_address;	130	config.base = hardcoded_load_address;
115	config.memory_size = get_memory_size();	131	config.memory_size = get_memory_size();
116		132
117	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);	133	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
118	stackaddr = config.base + config.kernel_size;	134	stackaddr = config.base + config.kernel_size;
119		135
120	/* Avoid placing kernel on top of init */	136	/* Avoid placing kernel on top of init */
121	count_t i;	137	count_t i;
122	bool overlap = false;	138	bool overlap = false;
123	for (i = 0; i < init.cnt; i++)	139	for (i = 0; i < init.cnt; i++)
124	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {	140	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
125	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);	141	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
126	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;	142	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
127	overlap = true;	143	overlap = true;
128	}	144	}
129		145
130	if (!overlap)	146	if (!overlap)
131	config.kernel_size += CONFIG_STACK_SIZE;	147	config.kernel_size += CONFIG_STACK_SIZE;
132		148
133	context_save(&ctx);	149	context_save(&ctx);
134	context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);	150	context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);
135	context_restore(&ctx);	151	context_restore(&ctx);
136	/* not reached */	152	/* not reached */
137	}	153	}
138		154
139		155
140	/** Main kernel routine for bootstrap CPU using new stack.	156	/** Main kernel routine for bootstrap CPU using new stack.
141	*	157	*
142	* Second part of main_bsp().	158	* Second part of main_bsp().
143	*	159	*
144	*/	160	*/
145	void main_bsp_separated_stack(void)	161	void main_bsp_separated_stack(void)
146	{	162	{
147	task_t *k;	163	task_t *k;
148	thread_t *t;	164	thread_t *t;
149	count_t i;	165	count_t i;
150		166
151	the_initialize(THE);	167	the_initialize(THE);
152		168
153	/*	169	/*
154	* kconsole data structures must be initialized very early	170	* kconsole data structures must be initialized very early
155	* because other subsystems will register their respective	171	* because other subsystems will register their respective
156	* commands.	172	* commands.
157	*/	173	*/
158	kconsole_init();	174	kconsole_init();
159		175
160	/*	176	/*
161	* Exception handler initialization, before architecture	177	* Exception handler initialization, before architecture
162	* starts adding its own handlers	178	* starts adding its own handlers
163	*/	179	*/
164	exc_init();	180	exc_init();
165		181
166	/*	182	/*
167	* Memory management subsystems initialization.	183	* Memory management subsystems initialization.
168	*/	184	*/
169	arch_pre_mm_init();	185	arch_pre_mm_init();
170	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */	186	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */
171	slab_cache_init();	187	slab_cache_init();
172	btree_init();	188	btree_init();
173	as_init();	189	as_init();
174	page_init();	190	page_init();
175	tlb_init();	191	tlb_init();
176	arch_post_mm_init();	192	arch_post_mm_init();
177		193
178	version_print();	194	version_print();
179	printf("%.p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(__address) 2, config.base, hardcoded_ktext_size / 1024, hardcoded_kdata_size / 1024);	195	printf("%.p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(__address) 2, config.base, hardcoded_ktext_size / 1024, hardcoded_kdata_size / 1024);
180		196
181	arch_pre_smp_init();	197	arch_pre_smp_init();
182	smp_init();	198	smp_init();
183		199
184	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */	200	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
185		201
186	printf("config.memory_size=%zdM\n", config.memory_size/(1024*1024));	202	printf("config.memory_size=%zdM\n", config.memory_size/(1024*1024));
187	printf("config.cpu_count=%zd\n", config.cpu_count);	203	printf("config.cpu_count=%zd\n", config.cpu_count);
188	cpu_init();	204	cpu_init();
189		205
190	calibrate_delay_loop();	206	calibrate_delay_loop();
191	timeout_init();	207	timeout_init();
192	scheduler_init();	208	scheduler_init();
193	task_init();	209	task_init();
194	thread_init();	210	thread_init();
195	futex_init();	211	futex_init();
196		212
197	for (i = 0; i < init.cnt; i++)	213	for (i = 0; i < init.cnt; i++)
198	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(__address)2, init.tasks[i].addr, i, init.tasks[i].size);	214	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(__address)2, init.tasks[i].addr, i, init.tasks[i].size);
199		215
200	ipc_init();	216	ipc_init();
201		217
202	/*	218	/*
203	* Create kernel task.	219	* Create kernel task.
204	*/	220	*/
205	k = task_create(AS_KERNEL, "KERNEL");	221	k = task_create(AS_KERNEL, "KERNEL");
206	if (!k)	222	if (!k)
207	panic("can't create kernel task\n");	223	panic("can't create kernel task\n");
208		224
209	/*	225	/*
210	* Create the first thread.	226	* Create the first thread.
211	*/	227	*/
212	t = thread_create(kinit, NULL, k, 0, "kinit");	228	t = thread_create(kinit, NULL, k, 0, "kinit");
213	if (!t)	229	if (!t)
214	panic("can't create kinit thread\n");	230	panic("can't create kinit thread\n");
215	thread_ready(t);	231	thread_ready(t);
216		232
217	/*	233	/*
218	* This call to scheduler() will return to kinit,	234	* This call to scheduler() will return to kinit,
219	* starting the thread of kernel threads.	235	* starting the thread of kernel threads.
220	*/	236	*/
221	scheduler();	237	scheduler();
222	/* not reached */	238	/* not reached */
223	}	239	}
224		240
225		241
226	#ifdef CONFIG_SMP	242	#ifdef CONFIG_SMP
227	/** Main kernel routine for application CPUs.	243	/** Main kernel routine for application CPUs.
228	*	244	*
229	* Executed by application processors, temporary stack	245	* Executed by application processors, temporary stack
230	* is at ctx.sp which was set during BP boot.	246	* is at ctx.sp which was set during BP boot.
231	* This function passes control directly to	247	* This function passes control directly to
232	* main_ap_separated_stack().	248	* main_ap_separated_stack().
233	*	249	*
234	* Assuming interrupts_disable()'d.	250	* Assuming interrupts_disable()'d.
235	*	251	*
236	*/	252	*/
237	void main_ap(void)	253	void main_ap(void)
238	{	254	{
239	/*	255	/*
240	* Incrementing the active CPU counter will guarantee that the	256	* Incrementing the active CPU counter will guarantee that the
241	* pm_init() will not attempt to build GDT and IDT tables again.	257	* pm_init() will not attempt to build GDT and IDT tables again.
242	* Neither frame_init() will do the complete thing. Neither cpu_init()	258	* Neither frame_init() will do the complete thing. Neither cpu_init()
243	* will do.	259	* will do.
244	*/	260	*/
245	config.cpu_active++;	261	config.cpu_active++;
246		262
247	/*	263	/*
248	* The THE structure is well defined because ctx.sp is used as stack.	264	* The THE structure is well defined because ctx.sp is used as stack.
249	*/	265	*/
250	the_initialize(THE);	266	the_initialize(THE);
251		267
252	arch_pre_mm_init();	268	arch_pre_mm_init();
253	frame_init();	269	frame_init();
254	page_init();	270	page_init();
255	tlb_init();	271	tlb_init();
256	arch_post_mm_init();	272	arch_post_mm_init();
257		273
258	cpu_init();	274	cpu_init();
259		275
260	calibrate_delay_loop();	276	calibrate_delay_loop();
261		277
262	l_apic_init();	278	l_apic_init();
263	l_apic_debug();	279	l_apic_debug();
264		280
265	the_copy(THE, (the_t *) CPU->stack);	281	the_copy(THE, (the_t *) CPU->stack);
266		282
267	/*	283	/*
268	* If we woke kmp up before we left the kernel stack, we could	284	* If we woke kmp up before we left the kernel stack, we could
269	* collide with another CPU coming up. To prevent this, we	285	* collide with another CPU coming up. To prevent this, we
270	* switch to this cpu's private stack prior to waking kmp up.	286	* switch to this cpu's private stack prior to waking kmp up.
271	*/	287	*/
272	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);	288	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
273	context_restore(&CPU->saved_context);	289	context_restore(&CPU->saved_context);
274	/* not reached */	290	/* not reached */
275	}	291	}
276		292
277		293
278	/** Main kernel routine for application CPUs using new stack.	294	/** Main kernel routine for application CPUs using new stack.
279	*	295	*
280	* Second part of main_ap().	296	* Second part of main_ap().
281	*	297	*
282	*/	298	*/
283	void main_ap_separated_stack(void)	299	void main_ap_separated_stack(void)
284	{	300	{
285	/*	301	/*
286	* Configure timeouts for this cpu.	302	* Configure timeouts for this cpu.
287	*/	303	*/
288	timeout_init();	304	timeout_init();
289		305
290	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	306	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
291	scheduler();	307	scheduler();
292	/* not reached */	308	/* not reached */
293	}	309	}
294	#endif /* CONFIG_SMP */	310	#endif /* CONFIG_SMP */
295		311

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(root)/kernel/trunk/generic/src/main/main.c – Rev 1229 → 1248