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>
#include <console/klog.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 >> 10, hardcoded_kdata_size >> 10);
 
    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 >> 20);
    printf("config.cpu_count=%zd\n", config.cpu_count);
    cpu_init();
   
    calibrate_delay_loop();
    clock_counter_init();
    timeout_init();
    scheduler_init();
    task_init();
    thread_init();
    futex_init();
    klog_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 1434	Rev 1595
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	#include <console/klog.h>
77		78
78	#ifdef CONFIG_SMP	79	#ifdef CONFIG_SMP
79	#include <arch/smp/apic.h>	80	#include <arch/smp/apic.h>
80	#include <arch/smp/mps.h>	81	#include <arch/smp/mps.h>
81	#endif /* CONFIG_SMP */	82	#endif /* CONFIG_SMP */
82	#include <smp/smp.h>	83	#include <smp/smp.h>
83		84
84	/** Global configuration structure. */	85	/** Global configuration structure. */
85	config_t config = {	86	config_t config = {
86	.mm_initialized = false	87	.mm_initialized = false
87	};	88	};
88		89
89	/** Initial user-space tasks */	90	/** Initial user-space tasks */
90	init_t init = {	91	init_t init = {
91	0	92	0
92	};	93	};
93		94
94	context_t ctx;	95	context_t ctx;
95		96
96	/**	97	/**
97	* These 'hardcoded' variables will be intialized by	98	* These 'hardcoded' variables will be intialized by
98	* the linker or the low level assembler code with	99	* the linker or the low level assembler code with
99	* appropriate sizes and addresses.	100	* appropriate sizes and addresses.
100	*/	101	*/
101	__address hardcoded_load_address = 0;	102	__address hardcoded_load_address = 0;
102	size_t hardcoded_ktext_size = 0;	103	size_t hardcoded_ktext_size = 0;
103	size_t hardcoded_kdata_size = 0;	104	size_t hardcoded_kdata_size = 0;
104		105
105	void main_bsp(void);	106	void main_bsp(void);
106	void main_ap(void);	107	void main_ap(void);
107		108
108	/*	109	/*
109	* These two functions prevent stack from underflowing during the	110	* These two functions prevent stack from underflowing during the
110	* kernel boot phase when SP is set to the very top of the reserved	111	* kernel boot phase when SP is set to the very top of the reserved
111	* space. The stack could get corrupted by a fooled compiler-generated	112	* space. The stack could get corrupted by a fooled compiler-generated
112	* pop sequence otherwise.	113	* pop sequence otherwise.
113	*/	114	*/
114	static void main_bsp_separated_stack(void);	115	static void main_bsp_separated_stack(void);
115	#ifdef CONFIG_SMP	116	#ifdef CONFIG_SMP
116	static void main_ap_separated_stack(void);	117	static void main_ap_separated_stack(void);
117	#endif	118	#endif
118		119
119	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)	120	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)
120		121
121	/** Main kernel routine for bootstrap CPU.	122	/** Main kernel routine for bootstrap CPU.
122	*	123	*
123	* Initializes the kernel by bootstrap CPU.	124	* Initializes the kernel by bootstrap CPU.
124	* This function passes control directly to	125	* This function passes control directly to
125	* main_bsp_separated_stack().	126	* main_bsp_separated_stack().
126	*	127	*
127	* Assuming interrupts_disable().	128	* Assuming interrupts_disable().
128	*	129	*
129	*/	130	*/
130	void main_bsp(void)	131	void main_bsp(void)
131	{	132	{
132	__address stackaddr;	133	__address stackaddr;
133		134
134	config.cpu_count = 1;	135	config.cpu_count = 1;
135	config.cpu_active = 1;	136	config.cpu_active = 1;
136		137
137	config.base = hardcoded_load_address;	138	config.base = hardcoded_load_address;
138	config.memory_size = get_memory_size();	139	config.memory_size = get_memory_size();
139		140
140	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);	141	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
141	stackaddr = config.base + config.kernel_size;	142	stackaddr = config.base + config.kernel_size;
142		143
143	/* Avoid placing kernel on top of init */	144	/* Avoid placing kernel on top of init */
144	count_t i;	145	count_t i;
145	bool overlap = false;	146	bool overlap = false;
146	for (i = 0; i < init.cnt; i++)	147	for (i = 0; i < init.cnt; i++)
147	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {	148	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
148	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);	149	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
149	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;	150	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
150	overlap = true;	151	overlap = true;
151	}	152	}
152		153
153	if (!overlap)	154	if (!overlap)
154	config.kernel_size += CONFIG_STACK_SIZE;	155	config.kernel_size += CONFIG_STACK_SIZE;
155		156
156	context_save(&ctx);	157	context_save(&ctx);
157	context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);	158	context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);
158	context_restore(&ctx);	159	context_restore(&ctx);
159	/* not reached */	160	/* not reached */
160	}	161	}
161		162
162		163
163	/** Main kernel routine for bootstrap CPU using new stack.	164	/** Main kernel routine for bootstrap CPU using new stack.
164	*	165	*
165	* Second part of main_bsp().	166	* Second part of main_bsp().
166	*	167	*
167	*/	168	*/
168	void main_bsp_separated_stack(void)	169	void main_bsp_separated_stack(void)
169	{	170	{
170	task_t *k;	171	task_t *k;
171	thread_t *t;	172	thread_t *t;
172	count_t i;	173	count_t i;
173		174
174	the_initialize(THE);	175	the_initialize(THE);
175		176
176	/*	177	/*
177	* kconsole data structures must be initialized very early	178	* kconsole data structures must be initialized very early
178	* because other subsystems will register their respective	179	* because other subsystems will register their respective
179	* commands.	180	* commands.
180	*/	181	*/
181	kconsole_init();	182	kconsole_init();
182		183
183	/*	184	/*
184	* Exception handler initialization, before architecture	185	* Exception handler initialization, before architecture
185	* starts adding its own handlers	186	* starts adding its own handlers
186	*/	187	*/
187	exc_init();	188	exc_init();
188		189
189	/*	190	/*
190	* Memory management subsystems initialization.	191	* Memory management subsystems initialization.
191	*/	192	*/
192	arch_pre_mm_init();	193	arch_pre_mm_init();
193	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */	194	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */
194	slab_cache_init();	195	slab_cache_init();
195	btree_init();	196	btree_init();
196	as_init();	197	as_init();
197	page_init();	198	page_init();
198	tlb_init();	199	tlb_init();
199	config.mm_initialized = true;	200	config.mm_initialized = true;
200	arch_post_mm_init();	201	arch_post_mm_init();
201		202
202	version_print();	203	version_print();
203	printf("%.p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(__address) 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);	204	printf("%.p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(__address) 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);
204		205
205	arch_pre_smp_init();	206	arch_pre_smp_init();
206	smp_init();	207	smp_init();
207		208
208	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */	209	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
209		210
210	printf("config.memory_size=%zdM\n", config.memory_size >> 20);	211	printf("config.memory_size=%zdM\n", config.memory_size >> 20);
211	printf("config.cpu_count=%zd\n", config.cpu_count);	212	printf("config.cpu_count=%zd\n", config.cpu_count);
212	cpu_init();	213	cpu_init();
213		214
214	calibrate_delay_loop();	215	calibrate_delay_loop();
215	clock_counter_init();	216	clock_counter_init();
216	timeout_init();	217	timeout_init();
217	scheduler_init();	218	scheduler_init();
218	task_init();	219	task_init();
219	thread_init();	220	thread_init();
220	futex_init();	221	futex_init();
-		222	klog_init();
221		223
222	for (i = 0; i < init.cnt; i++)	224	for (i = 0; i < init.cnt; i++)
223	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(__address) 2, init.tasks[i].addr, i, init.tasks[i].size);	225	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(__address) 2, init.tasks[i].addr, i, init.tasks[i].size);
224		226
225	ipc_init();	227	ipc_init();
226		228
227	/*	229	/*
228	* Create kernel task.	230	* Create kernel task.
229	*/	231	*/
230	k = task_create(AS_KERNEL, "KERNEL");	232	k = task_create(AS_KERNEL, "KERNEL");
231	if (!k)	233	if (!k)
232	panic("can't create kernel task\n");	234	panic("can't create kernel task\n");
233		235
234	/*	236	/*
235	* Create the first thread.	237	* Create the first thread.
236	*/	238	*/
237	t = thread_create(kinit, NULL, k, 0, "kinit");	239	t = thread_create(kinit, NULL, k, 0, "kinit");
238	if (!t)	240	if (!t)
239	panic("can't create kinit thread\n");	241	panic("can't create kinit thread\n");
240	thread_ready(t);	242	thread_ready(t);
241		243
242	/*	244	/*
243	* This call to scheduler() will return to kinit,	245	* This call to scheduler() will return to kinit,
244	* starting the thread of kernel threads.	246	* starting the thread of kernel threads.
245	*/	247	*/
246	scheduler();	248	scheduler();
247	/* not reached */	249	/* not reached */
248	}	250	}
249		251
250		252
251	#ifdef CONFIG_SMP	253	#ifdef CONFIG_SMP
252	/** Main kernel routine for application CPUs.	254	/** Main kernel routine for application CPUs.
253	*	255	*
254	* Executed by application processors, temporary stack	256	* Executed by application processors, temporary stack
255	* is at ctx.sp which was set during BP boot.	257	* is at ctx.sp which was set during BP boot.
256	* This function passes control directly to	258	* This function passes control directly to
257	* main_ap_separated_stack().	259	* main_ap_separated_stack().
258	*	260	*
259	* Assuming interrupts_disable()'d.	261	* Assuming interrupts_disable()'d.
260	*	262	*
261	*/	263	*/
262	void main_ap(void)	264	void main_ap(void)
263	{	265	{
264	/*	266	/*
265	* Incrementing the active CPU counter will guarantee that the	267	* Incrementing the active CPU counter will guarantee that the
266	* pm_init() will not attempt to build GDT and IDT tables again.	268	* pm_init() will not attempt to build GDT and IDT tables again.
267	* Neither frame_init() will do the complete thing. Neither cpu_init()	269	* Neither frame_init() will do the complete thing. Neither cpu_init()
268	* will do.	270	* will do.
269	*/	271	*/
270	config.cpu_active++;	272	config.cpu_active++;
271		273
272	/*	274	/*
273	* The THE structure is well defined because ctx.sp is used as stack.	275	* The THE structure is well defined because ctx.sp is used as stack.
274	*/	276	*/
275	the_initialize(THE);	277	the_initialize(THE);
276		278
277	arch_pre_mm_init();	279	arch_pre_mm_init();
278	frame_init();	280	frame_init();
279	page_init();	281	page_init();
280	tlb_init();	282	tlb_init();
281	arch_post_mm_init();	283	arch_post_mm_init();
282		284
283	cpu_init();	285	cpu_init();
284		286
285	calibrate_delay_loop();	287	calibrate_delay_loop();
286		288
287	l_apic_init();	289	l_apic_init();
288	l_apic_debug();	290	l_apic_debug();
289		291
290	the_copy(THE, (the_t *) CPU->stack);	292	the_copy(THE, (the_t *) CPU->stack);
291		293
292	/*	294	/*
293	* If we woke kmp up before we left the kernel stack, we could	295	* If we woke kmp up before we left the kernel stack, we could
294	* collide with another CPU coming up. To prevent this, we	296	* collide with another CPU coming up. To prevent this, we
295	* switch to this cpu's private stack prior to waking kmp up.	297	* switch to this cpu's private stack prior to waking kmp up.
296	*/	298	*/
297	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);	299	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
298	context_restore(&CPU->saved_context);	300	context_restore(&CPU->saved_context);
299	/* not reached */	301	/* not reached */
300	}	302	}
301		303
302		304
303	/** Main kernel routine for application CPUs using new stack.	305	/** Main kernel routine for application CPUs using new stack.
304	*	306	*
305	* Second part of main_ap().	307	* Second part of main_ap().
306	*	308	*
307	*/	309	*/
308	void main_ap_separated_stack(void)	310	void main_ap_separated_stack(void)
309	{	311	{
310	/*	312	/*
311	* Configure timeouts for this cpu.	313	* Configure timeouts for this cpu.
312	*/	314	*/
313	timeout_init();	315	timeout_init();
314		316
315	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	317	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
316	scheduler();	318	scheduler();
317	/* not reached */	319	/* not reached */
318	}	320	}
319	#endif /* CONFIG_SMP */	321	#endif /* CONFIG_SMP */
320		322

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/main/main.c – Rev 1434 → 1595