WebSVN – HelenOS – Diff – /trunk/kernel/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.
 */
 
/** @addtogroup main
 * @{
 */
 
/**
 * @file
 * @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>
 
 
 
 
 
#include <smp/smp.h>
 
/** Global configuration structure. */
config_t config;
 
/** Initial user-space tasks */
init_t init = {
    0
};
 
/** Boot allocations. */
ballocs_t ballocs = {
    .base = NULL,
    .size = 0
};
 
context_t ctx;
 
/*
 * These 'hardcoded' variables will be intialized by
 * the linker or the low level assembler code with
 * appropriate sizes and addresses.
 */
uintptr_t hardcoded_load_address = 0;   /**< Virtual address of where the kernel is loaded. */
size_t hardcoded_ktext_size = 0;    /**< Size of the kernel code in bytes. */
size_t hardcoded_kdata_size = 0;    /**< Size of the kernel data in bytes. */
 
uintptr_t stack_safe = 0;       /**< Lowest safe stack virtual address */
 
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)
{
    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);
    config.stack_size = CONFIG_STACK_SIZE;
   
    /* Initialy the stack is placed just after the kernel */
    config.stack_base = config.base + config.kernel_size;
   
    /* Avoid placing stack on top of init */
    count_t i;
    for (i = 0; i < init.cnt; i++) {
        if (PA_overlaps(config.stack_base, config.stack_size, init.tasks[i].addr, init.tasks[i].size))
            config.stack_base = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, config.stack_size);
    }
 
    /* Avoid placing stack on top of boot allocations. */
    if (ballocs.size) {
        if (PA_overlaps(config.stack_base, config.stack_size, ballocs.base, ballocs.size))
            config.stack_base = ALIGN_UP(ballocs.base + ballocs.size, PAGE_SIZE);
    }
   
    if (config.stack_base < stack_safe)
        config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);
   
    context_save(&ctx);
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base, 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("kernel: %.*p hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) * 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);
    printf("stack:  %.*p size=%zdK\n", sizeof(uintptr_t) * 2, config.stack_base, config.stack_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();
   
    if (init.cnt > 0) {
        for (i = 0; i < init.cnt; i++)
            printf("init[%zd].addr=%.*p, init[%zd].size=%zd\n", i, sizeof(uintptr_t) * 2, init.tasks[i].addr, i, init.tasks[i].size);
    } else
        printf("No init tasks found\n");
   
    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 BSP 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
     * *_init() functions can find out that they need to
     * do initialization for AP only.
 
     */
    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();
 
    arch_post_cpu_init();
 
 
    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), (uintptr_t) 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 1894	Rev 1901
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	/** @addtogroup main	29	/** @addtogroup main
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/**	33	/**
34	* @file	34	* @file
35	* @brief Main initialization kernel function for all processors.	35	* @brief Main initialization kernel function for all processors.
36	*	36	*
37	* During kernel boot, all processors, after architecture dependent	37	* During kernel boot, all processors, after architecture dependent
38	* initialization, start executing code found in this file. After	38	* initialization, start executing code found in this file. After
39	* bringing up all subsystems, control is passed to scheduler().	39	* bringing up all subsystems, control is passed to scheduler().
40	*	40	*
41	* The bootstrap processor starts executing main_bsp() while	41	* The bootstrap processor starts executing main_bsp() while
42	* the application processors start executing main_ap().	42	* the application processors start executing main_ap().
43	*	43	*
44	* @see scheduler()	44	* @see scheduler()
45	* @see main_bsp()	45	* @see main_bsp()
46	* @see main_ap()	46	* @see main_ap()
47	*/	47	*/
48		48
49	#include <arch/asm.h>	49	#include <arch/asm.h>
50	#include <context.h>	50	#include <context.h>
51	#include <print.h>	51	#include <print.h>
52	#include <panic.h>	52	#include <panic.h>
53	#include <debug.h>	53	#include <debug.h>
54	#include <config.h>	54	#include <config.h>
55	#include <time/clock.h>	55	#include <time/clock.h>
56	#include <proc/scheduler.h>	56	#include <proc/scheduler.h>
57	#include <proc/thread.h>	57	#include <proc/thread.h>
58	#include <proc/task.h>	58	#include <proc/task.h>
59	#include <main/kinit.h>	59	#include <main/kinit.h>
60	#include <main/version.h>	60	#include <main/version.h>
61	#include <console/kconsole.h>	61	#include <console/kconsole.h>
62	#include <cpu.h>	62	#include <cpu.h>
63	#include <align.h>	63	#include <align.h>
64	#include <interrupt.h>	64	#include <interrupt.h>
65	#include <arch/mm/memory_init.h>	65	#include <arch/mm/memory_init.h>
66	#include <mm/frame.h>	66	#include <mm/frame.h>
67	#include <mm/page.h>	67	#include <mm/page.h>
68	#include <genarch/mm/page_pt.h>	68	#include <genarch/mm/page_pt.h>
69	#include <mm/tlb.h>	69	#include <mm/tlb.h>
70	#include <mm/as.h>	70	#include <mm/as.h>
71	#include <mm/slab.h>	71	#include <mm/slab.h>
72	#include <synch/waitq.h>	72	#include <synch/waitq.h>
73	#include <synch/futex.h>	73	#include <synch/futex.h>
74	#include <arch/arch.h>	74	#include <arch/arch.h>
75	#include <arch.h>	75	#include <arch.h>
76	#include <arch/faddr.h>	76	#include <arch/faddr.h>
77	#include <typedefs.h>	77	#include <typedefs.h>
78	#include <ipc/ipc.h>	78	#include <ipc/ipc.h>
79	#include <macros.h>	79	#include <macros.h>
80	#include <adt/btree.h>	80	#include <adt/btree.h>
81	#include <console/klog.h>	81	#include <console/klog.h>
82		-
83	#ifdef CONFIG_SMP	-
84	#include <arch/smp/apic.h>	-
85	#include <arch/smp/mps.h>	-
86	#endif /* CONFIG_SMP */	-
87	#include <smp/smp.h>	82	#include <smp/smp.h>
88		83
89	/** Global configuration structure. */	84	/** Global configuration structure. */
90	config_t config;	85	config_t config;
91		86
92	/** Initial user-space tasks */	87	/** Initial user-space tasks */
93	init_t init = {	88	init_t init = {
94	0	89	0
95	};	90	};
96		91
97	/** Boot allocations. */	92	/** Boot allocations. */
98	ballocs_t ballocs = {	93	ballocs_t ballocs = {
99	.base = NULL,	94	.base = NULL,
100	.size = 0	95	.size = 0
101	};	96	};
102		97
103	context_t ctx;	98	context_t ctx;
104		99
105	/*	100	/*
106	* These 'hardcoded' variables will be intialized by	101	* These 'hardcoded' variables will be intialized by
107	* the linker or the low level assembler code with	102	* the linker or the low level assembler code with
108	* appropriate sizes and addresses.	103	* appropriate sizes and addresses.
109	*/	104	*/
110	uintptr_t hardcoded_load_address = 0; /*< Virtual address of where the kernel is loaded. /	105	uintptr_t hardcoded_load_address = 0; /*< Virtual address of where the kernel is loaded. /
111	size_t hardcoded_ktext_size = 0; /*< Size of the kernel code in bytes. /	106	size_t hardcoded_ktext_size = 0; /*< Size of the kernel code in bytes. /
112	size_t hardcoded_kdata_size = 0; /*< Size of the kernel data in bytes. /	107	size_t hardcoded_kdata_size = 0; /*< Size of the kernel data in bytes. /
113		108
114	uintptr_t stack_safe = 0; /*< Lowest safe stack virtual address /	109	uintptr_t stack_safe = 0; /*< Lowest safe stack virtual address /
115		110
116	void main_bsp(void);	111	void main_bsp(void);
117	void main_ap(void);	112	void main_ap(void);
118		113
119	/*	114	/*
120	* These two functions prevent stack from underflowing during the	115	* These two functions prevent stack from underflowing during the
121	* kernel boot phase when SP is set to the very top of the reserved	116	* kernel boot phase when SP is set to the very top of the reserved
122	* space. The stack could get corrupted by a fooled compiler-generated	117	* space. The stack could get corrupted by a fooled compiler-generated
123	* pop sequence otherwise.	118	* pop sequence otherwise.
124	*/	119	*/
125	static void main_bsp_separated_stack(void);	120	static void main_bsp_separated_stack(void);
126	#ifdef CONFIG_SMP	121	#ifdef CONFIG_SMP
127	static void main_ap_separated_stack(void);	122	static void main_ap_separated_stack(void);
128	#endif	123	#endif
129		124
130	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)	125	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)
131		126
132	/** Main kernel routine for bootstrap CPU.	127	/** Main kernel routine for bootstrap CPU.
133	*	128	*
134	* Initializes the kernel by bootstrap CPU.	129	* Initializes the kernel by bootstrap CPU.
135	* This function passes control directly to	130	* This function passes control directly to
136	* main_bsp_separated_stack().	131	* main_bsp_separated_stack().
137	*	132	*
138	* Assuming interrupts_disable().	133	* Assuming interrupts_disable().
139	*	134	*
140	*/	135	*/
141	void main_bsp(void)	136	void main_bsp(void)
142	{	137	{
143	config.cpu_count = 1;	138	config.cpu_count = 1;
144	config.cpu_active = 1;	139	config.cpu_active = 1;
145		140
146	config.base = hardcoded_load_address;	141	config.base = hardcoded_load_address;
147	config.memory_size = get_memory_size();	142	config.memory_size = get_memory_size();
148		143
149	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);	144	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
150	config.stack_size = CONFIG_STACK_SIZE;	145	config.stack_size = CONFIG_STACK_SIZE;
151		146
152	/* Initialy the stack is placed just after the kernel */	147	/* Initialy the stack is placed just after the kernel */
153	config.stack_base = config.base + config.kernel_size;	148	config.stack_base = config.base + config.kernel_size;
154		149
155	/* Avoid placing stack on top of init */	150	/* Avoid placing stack on top of init */
156	count_t i;	151	count_t i;
157	for (i = 0; i < init.cnt; i++) {	152	for (i = 0; i < init.cnt; i++) {
158	if (PA_overlaps(config.stack_base, config.stack_size, init.tasks[i].addr, init.tasks[i].size))	153	if (PA_overlaps(config.stack_base, config.stack_size, init.tasks[i].addr, init.tasks[i].size))
159	config.stack_base = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, config.stack_size);	154	config.stack_base = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, config.stack_size);
160	}	155	}
161		156
162	/* Avoid placing stack on top of boot allocations. */	157	/* Avoid placing stack on top of boot allocations. */
163	if (ballocs.size) {	158	if (ballocs.size) {
164	if (PA_overlaps(config.stack_base, config.stack_size, ballocs.base, ballocs.size))	159	if (PA_overlaps(config.stack_base, config.stack_size, ballocs.base, ballocs.size))
165	config.stack_base = ALIGN_UP(ballocs.base + ballocs.size, PAGE_SIZE);	160	config.stack_base = ALIGN_UP(ballocs.base + ballocs.size, PAGE_SIZE);
166	}	161	}
167		162
168	if (config.stack_base < stack_safe)	163	if (config.stack_base < stack_safe)
169	config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);	164	config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);
170		165
171	context_save(&ctx);	166	context_save(&ctx);
172	context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base, THREAD_STACK_SIZE);	167	context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base, THREAD_STACK_SIZE);
173	context_restore(&ctx);	168	context_restore(&ctx);
174	/* not reached */	169	/* not reached */
175	}	170	}
176		171
177		172
178	/** Main kernel routine for bootstrap CPU using new stack.	173	/** Main kernel routine for bootstrap CPU using new stack.
179	*	174	*
180	* Second part of main_bsp().	175	* Second part of main_bsp().
181	*	176	*
182	*/	177	*/
183	void main_bsp_separated_stack(void)	178	void main_bsp_separated_stack(void)
184	{	179	{
185	task_t *k;	180	task_t *k;
186	thread_t *t;	181	thread_t *t;
187	count_t i;	182	count_t i;
188		183
189	the_initialize(THE);	184	the_initialize(THE);
190		185
191	/*	186	/*
192	* kconsole data structures must be initialized very early	187	* kconsole data structures must be initialized very early
193	* because other subsystems will register their respective	188	* because other subsystems will register their respective
194	* commands.	189	* commands.
195	*/	190	*/
196	kconsole_init();	191	kconsole_init();
197		192
198	/*	193	/*
199	* Exception handler initialization, before architecture	194	* Exception handler initialization, before architecture
200	* starts adding its own handlers	195	* starts adding its own handlers
201	*/	196	*/
202	exc_init();	197	exc_init();
203		198
204	/*	199	/*
205	* Memory management subsystems initialization.	200	* Memory management subsystems initialization.
206	*/	201	*/
207	arch_pre_mm_init();	202	arch_pre_mm_init();
208	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */	203	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */
209	slab_cache_init();	204	slab_cache_init();
210	btree_init();	205	btree_init();
211	as_init();	206	as_init();
212	page_init();	207	page_init();
213	tlb_init();	208	tlb_init();
214	arch_post_mm_init();	209	arch_post_mm_init();
215		210
216	version_print();	211	version_print();
217	printf("kernel: %.p hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);	212	printf("kernel: %.p hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);
218	printf("stack: %.p size=%zdK\n", sizeof(uintptr_t) 2, config.stack_base, config.stack_size >> 10);	213	printf("stack: %.p size=%zdK\n", sizeof(uintptr_t) 2, config.stack_base, config.stack_size >> 10);
219		214
220	arch_pre_smp_init();	215	arch_pre_smp_init();
221	smp_init();	216	smp_init();
222		217
223	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */	218	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
224		219
225	printf("config.memory_size=%zdM\n", config.memory_size >> 20);	220	printf("config.memory_size=%zdM\n", config.memory_size >> 20);
226	printf("config.cpu_count=%zd\n", config.cpu_count);	221	printf("config.cpu_count=%zd\n", config.cpu_count);
227	cpu_init();	222	cpu_init();
228		223
229	calibrate_delay_loop();	224	calibrate_delay_loop();
230	clock_counter_init();	225	clock_counter_init();
231	timeout_init();	226	timeout_init();
232	scheduler_init();	227	scheduler_init();
233	task_init();	228	task_init();
234	thread_init();	229	thread_init();
235	futex_init();	230	futex_init();
236	klog_init();	231	klog_init();
237		232
238	if (init.cnt > 0) {	233	if (init.cnt > 0) {
239	for (i = 0; i < init.cnt; i++)	234	for (i = 0; i < init.cnt; i++)
240	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(uintptr_t) 2, init.tasks[i].addr, i, init.tasks[i].size);	235	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(uintptr_t) 2, init.tasks[i].addr, i, init.tasks[i].size);
241	} else	236	} else
242	printf("No init tasks found\n");	237	printf("No init tasks found\n");
243		238
244	ipc_init();	239	ipc_init();
245		240
246	/*	241	/*
247	* Create kernel task.	242	* Create kernel task.
248	*/	243	*/
249	k = task_create(AS_KERNEL, "KERNEL");	244	k = task_create(AS_KERNEL, "KERNEL");
250	if (!k)	245	if (!k)
251	panic("can't create kernel task\n");	246	panic("can't create kernel task\n");
252		247
253	/*	248	/*
254	* Create the first thread.	249	* Create the first thread.
255	*/	250	*/
256	t = thread_create(kinit, NULL, k, 0, "kinit");	251	t = thread_create(kinit, NULL, k, 0, "kinit");
257	if (!t)	252	if (!t)
258	panic("can't create kinit thread\n");	253	panic("can't create kinit thread\n");
259	thread_ready(t);	254	thread_ready(t);
260		255
261	/*	256	/*
262	* This call to scheduler() will return to kinit,	257	* This call to scheduler() will return to kinit,
263	* starting the thread of kernel threads.	258	* starting the thread of kernel threads.
264	*/	259	*/
265	scheduler();	260	scheduler();
266	/* not reached */	261	/* not reached */
267	}	262	}
268		263
269		264
270	#ifdef CONFIG_SMP	265	#ifdef CONFIG_SMP
271	/** Main kernel routine for application CPUs.	266	/** Main kernel routine for application CPUs.
272	*	267	*
273	* Executed by application processors, temporary stack	268	* Executed by application processors, temporary stack
274	* is at ctx.sp which was set during BP boot.	269	* is at ctx.sp which was set during BSP boot.
275	* This function passes control directly to	270	* This function passes control directly to
276	* main_ap_separated_stack().	271	* main_ap_separated_stack().
277	*	272	*
278	* Assuming interrupts_disable()'d.	273	* Assuming interrupts_disable()'d.
279	*	274	*
280	*/	275	*/
281	void main_ap(void)	276	void main_ap(void)
282	{	277	{
283	/*	278	/*
284	* Incrementing the active CPU counter will guarantee that the	279	* Incrementing the active CPU counter will guarantee that the
285	* pm_init() will not attempt to build GDT and IDT tables again.	280	* *_init() functions can find out that they need to
286	* Neither frame_init() will do the complete thing. Neither cpu_init()	281	* do initialization for AP only.
287	* will do.	-
288	*/	282	*/
289	config.cpu_active++;	283	config.cpu_active++;
290		284
291	/*	285	/*
292	* The THE structure is well defined because ctx.sp is used as stack.	286	* The THE structure is well defined because ctx.sp is used as stack.
293	*/	287	*/
294	the_initialize(THE);	288	the_initialize(THE);
295		289
296	arch_pre_mm_init();	290	arch_pre_mm_init();
297	frame_init();	291	frame_init();
298	page_init();	292	page_init();
299	tlb_init();	293	tlb_init();
300	arch_post_mm_init();	294	arch_post_mm_init();
301		295
302	cpu_init();	296	cpu_init();
303		-
304	calibrate_delay_loop();	297	calibrate_delay_loop();
305		-
306	l_apic_init();	298	arch_post_cpu_init();
307	l_apic_debug();	-
308		299
309	the_copy(THE, (the_t *) CPU->stack);	300	the_copy(THE, (the_t *) CPU->stack);
310		301
311	/*	302	/*
312	* If we woke kmp up before we left the kernel stack, we could	303	* If we woke kmp up before we left the kernel stack, we could
313	* collide with another CPU coming up. To prevent this, we	304	* collide with another CPU coming up. To prevent this, we
314	* switch to this cpu's private stack prior to waking kmp up.	305	* switch to this cpu's private stack prior to waking kmp up.
315	*/	306	*/
316	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (uintptr_t) CPU->stack, CPU_STACK_SIZE);	307	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (uintptr_t) CPU->stack, CPU_STACK_SIZE);
317	context_restore(&CPU->saved_context);	308	context_restore(&CPU->saved_context);
318	/* not reached */	309	/* not reached */
319	}	310	}
320		311
321		312
322	/** Main kernel routine for application CPUs using new stack.	313	/** Main kernel routine for application CPUs using new stack.
323	*	314	*
324	* Second part of main_ap().	315	* Second part of main_ap().
325	*	316	*
326	*/	317	*/
327	void main_ap_separated_stack(void)	318	void main_ap_separated_stack(void)
328	{	319	{
329	/*	320	/*
330	* Configure timeouts for this cpu.	321	* Configure timeouts for this cpu.
331	*/	322	*/
332	timeout_init();	323	timeout_init();
333		324
334	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	325	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
335	scheduler();	326	scheduler();
336	/* not reached */	327	/* not reached */
337	}	328	}
338	#endif /* CONFIG_SMP */	329	#endif /* CONFIG_SMP */
339		330
340	/** @}	331	/** @}
341	*/	332	*/
342		333

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(root)/trunk/kernel/generic/src/main/main.c – Rev 1894 → 1901