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>
 
/** Global configuration structure. */
config_t config = {
    .mm_initialized = false
};
 
/** Initial user-space tasks */
init_t init = {
    0
};
 
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();
    config.mm_initialized = true;
    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 1248	Rev 1315
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	/**	29	/**
30	* @file main.c	30	* @file main.c
31	* @brief Main initialization kernel function for all processors.	31	* @brief Main initialization kernel function for all processors.
32	*	32	*
33	* During kernel boot, all processors, after architecture dependent	33	* During kernel boot, all processors, after architecture dependent
34	* initialization, start executing code found in this file. After	34	* initialization, start executing code found in this file. After
35	* bringing up all subsystems, control is passed to scheduler().	35	* bringing up all subsystems, control is passed to scheduler().
36	*	36	*
37	* The bootstrap processor starts executing main_bsp() while	37	* The bootstrap processor starts executing main_bsp() while
38	* the application processors start executing main_ap().	38	* the application processors start executing main_ap().
39	*	39	*
40	* @see scheduler()	40	* @see scheduler()
41	* @see main_bsp()	41	* @see main_bsp()
42	* @see main_ap()	42	* @see main_ap()
43	*/	43	*/
44		44
45	#include <arch/asm.h>	45	#include <arch/asm.h>
46	#include <context.h>	46	#include <context.h>
47	#include <print.h>	47	#include <print.h>
48	#include <panic.h>	48	#include <panic.h>
49	#include <debug.h>	49	#include <debug.h>
50	#include <config.h>	50	#include <config.h>
51	#include <time/clock.h>	51	#include <time/clock.h>
52	#include <proc/scheduler.h>	52	#include <proc/scheduler.h>
53	#include <proc/thread.h>	53	#include <proc/thread.h>
54	#include <proc/task.h>	54	#include <proc/task.h>
55	#include <main/kinit.h>	55	#include <main/kinit.h>
56	#include <main/version.h>	56	#include <main/version.h>
57	#include <console/kconsole.h>	57	#include <console/kconsole.h>
58	#include <cpu.h>	58	#include <cpu.h>
59	#include <align.h>	59	#include <align.h>
60	#include <interrupt.h>	60	#include <interrupt.h>
61	#include <arch/mm/memory_init.h>	61	#include <arch/mm/memory_init.h>
62	#include <mm/frame.h>	62	#include <mm/frame.h>
63	#include <mm/page.h>	63	#include <mm/page.h>
64	#include <genarch/mm/page_pt.h>	64	#include <genarch/mm/page_pt.h>
65	#include <mm/tlb.h>	65	#include <mm/tlb.h>
66	#include <mm/as.h>	66	#include <mm/as.h>
67	#include <mm/slab.h>	67	#include <mm/slab.h>
68	#include <synch/waitq.h>	68	#include <synch/waitq.h>
69	#include <synch/futex.h>	69	#include <synch/futex.h>
70	#include <arch/arch.h>	70	#include <arch/arch.h>
71	#include <arch.h>	71	#include <arch.h>
72	#include <arch/faddr.h>	72	#include <arch/faddr.h>
73	#include <typedefs.h>	73	#include <typedefs.h>
74	#include <ipc/ipc.h>	74	#include <ipc/ipc.h>
75	#include <macros.h>	75	#include <macros.h>
76	#include <adt/btree.h>	76	#include <adt/btree.h>
77		77
78	#ifdef CONFIG_SMP	78	#ifdef CONFIG_SMP
79	#include <arch/smp/apic.h>	79	#include <arch/smp/apic.h>
80	#include <arch/smp/mps.h>	80	#include <arch/smp/mps.h>
81	#endif /* CONFIG_SMP */	81	#endif /* CONFIG_SMP */
82	#include <smp/smp.h>	82	#include <smp/smp.h>
83		83
84	config_t config; /*< Global configuration structure. /	84	/** Global configuration structure. */
-		85	config_t config = {
-		86	.mm_initialized = false
-		87	};
-		88
85	init_t init = {0}; /*< Initial user-space tasks /	89	/** Initial user-space tasks */
-		90	init_t init = {
-		91	0
-		92	};
86		93
87	context_t ctx;	94	context_t ctx;
88		95
89	/**	96	/**
90	* These 'hardcoded' variables will be intialized by	97	* These 'hardcoded' variables will be intialized by
91	* the linker or the low level assembler code with	98	* the linker or the low level assembler code with
92	* appropriate sizes and addresses.	99	* appropriate sizes and addresses.
93	*/	100	*/
94	__address hardcoded_load_address = 0;	101	__address hardcoded_load_address = 0;
95	size_t hardcoded_ktext_size = 0;	102	size_t hardcoded_ktext_size = 0;
96	size_t hardcoded_kdata_size = 0;	103	size_t hardcoded_kdata_size = 0;
97		104
98	void main_bsp(void);	105	void main_bsp(void);
99	void main_ap(void);	106	void main_ap(void);
100		107
101	/*	108	/*
102	* These two functions prevent stack from underflowing during the	109	* These two functions prevent stack from underflowing during the
103	* kernel boot phase when SP is set to the very top of the reserved	110	* kernel boot phase when SP is set to the very top of the reserved
104	* space. The stack could get corrupted by a fooled compiler-generated	111	* space. The stack could get corrupted by a fooled compiler-generated
105	* pop sequence otherwise.	112	* pop sequence otherwise.
106	*/	113	*/
107	static void main_bsp_separated_stack(void);	114	static void main_bsp_separated_stack(void);
108	#ifdef CONFIG_SMP	115	#ifdef CONFIG_SMP
109	static void main_ap_separated_stack(void);	116	static void main_ap_separated_stack(void);
110	#endif	117	#endif
111		118
112	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)	119	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)
113		120
114	/** Main kernel routine for bootstrap CPU.	121	/** Main kernel routine for bootstrap CPU.
115	*	122	*
116	* Initializes the kernel by bootstrap CPU.	123	* Initializes the kernel by bootstrap CPU.
117	* This function passes control directly to	124	* This function passes control directly to
118	* main_bsp_separated_stack().	125	* main_bsp_separated_stack().
119	*	126	*
120	* Assuming interrupts_disable().	127	* Assuming interrupts_disable().
121	*	128	*
122	*/	129	*/
123	void main_bsp(void)	130	void main_bsp(void)
124	{	131	{
125	__address stackaddr;	132	__address stackaddr;
126		133
127	config.cpu_count = 1;	134	config.cpu_count = 1;
128	config.cpu_active = 1;	135	config.cpu_active = 1;
129		136
130	config.base = hardcoded_load_address;	137	config.base = hardcoded_load_address;
131	config.memory_size = get_memory_size();	138	config.memory_size = get_memory_size();
132		139
133	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);	140	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
134	stackaddr = config.base + config.kernel_size;	141	stackaddr = config.base + config.kernel_size;
135		142
136	/* Avoid placing kernel on top of init */	143	/* Avoid placing kernel on top of init */
137	count_t i;	144	count_t i;
138	bool overlap = false;	145	bool overlap = false;
139	for (i = 0; i < init.cnt; i++)	146	for (i = 0; i < init.cnt; i++)
140	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {	147	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
141	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);	148	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
142	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;	149	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
143	overlap = true;	150	overlap = true;
144	}	151	}
145		152
146	if (!overlap)	153	if (!overlap)
147	config.kernel_size += CONFIG_STACK_SIZE;	154	config.kernel_size += CONFIG_STACK_SIZE;
148		155
149	context_save(&ctx);	156	context_save(&ctx);
150	context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);	157	context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);
151	context_restore(&ctx);	158	context_restore(&ctx);
152	/* not reached */	159	/* not reached */
153	}	160	}
154		161
155		162
156	/** Main kernel routine for bootstrap CPU using new stack.	163	/** Main kernel routine for bootstrap CPU using new stack.
157	*	164	*
158	* Second part of main_bsp().	165	* Second part of main_bsp().
159	*	166	*
160	*/	167	*/
161	void main_bsp_separated_stack(void)	168	void main_bsp_separated_stack(void)
162	{	169	{
163	task_t *k;	170	task_t *k;
164	thread_t *t;	171	thread_t *t;
165	count_t i;	172	count_t i;
166		173
167	the_initialize(THE);	174	the_initialize(THE);
168		175
169	/*	176	/*
170	* kconsole data structures must be initialized very early	177	* kconsole data structures must be initialized very early
171	* because other subsystems will register their respective	178	* because other subsystems will register their respective
172	* commands.	179	* commands.
173	*/	180	*/
174	kconsole_init();	181	kconsole_init();
175		182
176	/*	183	/*
177	* Exception handler initialization, before architecture	184	* Exception handler initialization, before architecture
178	* starts adding its own handlers	185	* starts adding its own handlers
179	*/	186	*/
180	exc_init();	187	exc_init();
181		188
182	/*	189	/*
183	* Memory management subsystems initialization.	190	* Memory management subsystems initialization.
184	*/	191	*/
185	arch_pre_mm_init();	192	arch_pre_mm_init();
186	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */	193	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */
187	slab_cache_init();	194	slab_cache_init();
188	btree_init();	195	btree_init();
189	as_init();	196	as_init();
190	page_init();	197	page_init();
191	tlb_init();	198	tlb_init();
-		199	config.mm_initialized = true;
192	arch_post_mm_init();	200	arch_post_mm_init();
193		201
194	version_print();	202	version_print();
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);	203	printf("%.p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(__address) 2, config.base, hardcoded_ktext_size / 1024, hardcoded_kdata_size / 1024);
196		204
197	arch_pre_smp_init();	205	arch_pre_smp_init();
198	smp_init();	206	smp_init();
199		207
200	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */	208	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
201		209
202	printf("config.memory_size=%zdM\n", config.memory_size/(1024*1024));	210	printf("config.memory_size=%zdM\n", config.memory_size/(1024*1024));
203	printf("config.cpu_count=%zd\n", config.cpu_count);	211	printf("config.cpu_count=%zd\n", config.cpu_count);
204	cpu_init();	212	cpu_init();
205		213
206	calibrate_delay_loop();	214	calibrate_delay_loop();
207	timeout_init();	215	timeout_init();
208	scheduler_init();	216	scheduler_init();
209	task_init();	217	task_init();
210	thread_init();	218	thread_init();
211	futex_init();	219	futex_init();
212		220
213	for (i = 0; i < init.cnt; i++)	221	for (i = 0; i < init.cnt; i++)
214	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(__address)2, init.tasks[i].addr, i, init.tasks[i].size);	222	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(__address)2, init.tasks[i].addr, i, init.tasks[i].size);
215		223
216	ipc_init();	224	ipc_init();
217		225
218	/*	226	/*
219	* Create kernel task.	227	* Create kernel task.
220	*/	228	*/
221	k = task_create(AS_KERNEL, "KERNEL");	229	k = task_create(AS_KERNEL, "KERNEL");
222	if (!k)	230	if (!k)
223	panic("can't create kernel task\n");	231	panic("can't create kernel task\n");
224		232
225	/*	233	/*
226	* Create the first thread.	234	* Create the first thread.
227	*/	235	*/
228	t = thread_create(kinit, NULL, k, 0, "kinit");	236	t = thread_create(kinit, NULL, k, 0, "kinit");
229	if (!t)	237	if (!t)
230	panic("can't create kinit thread\n");	238	panic("can't create kinit thread\n");
231	thread_ready(t);	239	thread_ready(t);
232		240
233	/*	241	/*
234	* This call to scheduler() will return to kinit,	242	* This call to scheduler() will return to kinit,
235	* starting the thread of kernel threads.	243	* starting the thread of kernel threads.
236	*/	244	*/
237	scheduler();	245	scheduler();
238	/* not reached */	246	/* not reached */
239	}	247	}
240		248
241		249
242	#ifdef CONFIG_SMP	250	#ifdef CONFIG_SMP
243	/** Main kernel routine for application CPUs.	251	/** Main kernel routine for application CPUs.
244	*	252	*
245	* Executed by application processors, temporary stack	253	* Executed by application processors, temporary stack
246	* is at ctx.sp which was set during BP boot.	254	* is at ctx.sp which was set during BP boot.
247	* This function passes control directly to	255	* This function passes control directly to
248	* main_ap_separated_stack().	256	* main_ap_separated_stack().
249	*	257	*
250	* Assuming interrupts_disable()'d.	258	* Assuming interrupts_disable()'d.
251	*	259	*
252	*/	260	*/
253	void main_ap(void)	261	void main_ap(void)
254	{	262	{
255	/*	263	/*
256	* Incrementing the active CPU counter will guarantee that the	264	* Incrementing the active CPU counter will guarantee that the
257	* pm_init() will not attempt to build GDT and IDT tables again.	265	* pm_init() will not attempt to build GDT and IDT tables again.
258	* Neither frame_init() will do the complete thing. Neither cpu_init()	266	* Neither frame_init() will do the complete thing. Neither cpu_init()
259	* will do.	267	* will do.
260	*/	268	*/
261	config.cpu_active++;	269	config.cpu_active++;
262		270
263	/*	271	/*
264	* The THE structure is well defined because ctx.sp is used as stack.	272	* The THE structure is well defined because ctx.sp is used as stack.
265	*/	273	*/
266	the_initialize(THE);	274	the_initialize(THE);
267		275
268	arch_pre_mm_init();	276	arch_pre_mm_init();
269	frame_init();	277	frame_init();
270	page_init();	278	page_init();
271	tlb_init();	279	tlb_init();
272	arch_post_mm_init();	280	arch_post_mm_init();
273		281
274	cpu_init();	282	cpu_init();
275		283
276	calibrate_delay_loop();	284	calibrate_delay_loop();
277		285
278	l_apic_init();	286	l_apic_init();
279	l_apic_debug();	287	l_apic_debug();
280		288
281	the_copy(THE, (the_t *) CPU->stack);	289	the_copy(THE, (the_t *) CPU->stack);
282		290
283	/*	291	/*
284	* If we woke kmp up before we left the kernel stack, we could	292	* If we woke kmp up before we left the kernel stack, we could
285	* collide with another CPU coming up. To prevent this, we	293	* collide with another CPU coming up. To prevent this, we
286	* switch to this cpu's private stack prior to waking kmp up.	294	* switch to this cpu's private stack prior to waking kmp up.
287	*/	295	*/
288	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);	296	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
289	context_restore(&CPU->saved_context);	297	context_restore(&CPU->saved_context);
290	/* not reached */	298	/* not reached */
291	}	299	}
292		300
293		301
294	/** Main kernel routine for application CPUs using new stack.	302	/** Main kernel routine for application CPUs using new stack.
295	*	303	*
296	* Second part of main_ap().	304	* Second part of main_ap().
297	*	305	*
298	*/	306	*/
299	void main_ap_separated_stack(void)	307	void main_ap_separated_stack(void)
300	{	308	{
301	/*	309	/*
302	* Configure timeouts for this cpu.	310	* Configure timeouts for this cpu.
303	*/	311	*/
304	timeout_init();	312	timeout_init();
305		313
306	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	314	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
307	scheduler();	315	scheduler();
308	/* not reached */	316	/* not reached */
309	}	317	}
310	#endif /* CONFIG_SMP */	318	#endif /* CONFIG_SMP */
311		319

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(root)/kernel/trunk/generic/src/main/main.c – Rev 1248 → 1315