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 <time/timeout.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 <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 <ipc/ipc.h>
#include <macros.h>
#include <adt/btree.h>
#include <console/klog.h>
#include <smp/smp.h>
#include <ddi/ddi.h>
 
/** Global configuration structure. */
config_t config;
 
/** Initial user-space tasks */
init_t init = {
    .cnt = 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.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();
    ddi_init();
    arch_post_mm_init();
   
    version_print();
    printf("kernel: %.*p hardcoded_ktext_size=%zd KB, "
        "hardcoded_kdata_size=%zd KB\n", sizeof(uintptr_t) * 2,
        config.base, SIZE2KB(hardcoded_ktext_size),
        SIZE2KB(hardcoded_kdata_size));
    printf("stack:  %.*p size=%zd KB\n", sizeof(uintptr_t) * 2,
        config.stack_base, SIZE2KB(config.stack_size));
   
    arch_pre_smp_init();
    smp_init();
    /* Slab must be initialized after we know the number of processors. */
    slab_enable_cpucache();
   
    printf("Detected %zu CPU(s), %llu MB free memory\n",
        config.cpu_count, SIZE2MB(zone_total_size()));
    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 binaries 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", true);
    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 2725	Rev 2745
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 <time/timeout.h>	56	#include <time/timeout.h>
57	#include <proc/scheduler.h>	57	#include <proc/scheduler.h>
58	#include <proc/thread.h>	58	#include <proc/thread.h>
59	#include <proc/task.h>	59	#include <proc/task.h>
60	#include <main/kinit.h>	60	#include <main/kinit.h>
61	#include <main/version.h>	61	#include <main/version.h>
62	#include <console/kconsole.h>	62	#include <console/kconsole.h>
63	#include <cpu.h>	63	#include <cpu.h>
64	#include <align.h>	64	#include <align.h>
65	#include <interrupt.h>	65	#include <interrupt.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 <ipc/ipc.h>	77	#include <ipc/ipc.h>
78	#include <macros.h>	78	#include <macros.h>
79	#include <adt/btree.h>	79	#include <adt/btree.h>
80	#include <console/klog.h>	80	#include <console/klog.h>
81	#include <smp/smp.h>	81	#include <smp/smp.h>
82	#include <ddi/ddi.h>	82	#include <ddi/ddi.h>
83		83
84	/** Global configuration structure. */	84	/** Global configuration structure. */
85	config_t config;	85	config_t config;
86		86
87	/** Initial user-space tasks */	87	/** Initial user-space tasks */
88	init_t init = {	88	init_t init = {
89	0	89	.cnt = 0
90	};	90	};
91		91
92	/** Boot allocations. */	92	/** Boot allocations. */
93	ballocs_t ballocs = {	93	ballocs_t ballocs = {
94	.base = NULL,	94	.base = NULL,
95	.size = 0	95	.size = 0
96	};	96	};
97		97
98	context_t ctx;	98	context_t ctx;
99		99
100	/*	100	/*
101	* These 'hardcoded' variables will be intialized by	101	* These 'hardcoded' variables will be intialized by
102	* the linker or the low level assembler code with	102	* the linker or the low level assembler code with
103	* appropriate sizes and addresses.	103	* appropriate sizes and addresses.
104	*/	104	*/
105	uintptr_t hardcoded_load_address = 0; /**< Virtual address of where the kernel	105	uintptr_t hardcoded_load_address = 0; /**< Virtual address of where the kernel
106	* is loaded. */	106	* is loaded. */
107	size_t hardcoded_ktext_size = 0; /**< Size of the kernel code in bytes.	107	size_t hardcoded_ktext_size = 0; /**< Size of the kernel code in bytes.
108	*/	108	*/
109	size_t hardcoded_kdata_size = 0; /**< Size of the kernel data in bytes.	109	size_t hardcoded_kdata_size = 0; /**< Size of the kernel data in bytes.
110	*/	110	*/
111	uintptr_t stack_safe = 0; /**< Lowest safe stack virtual address.	111	uintptr_t stack_safe = 0; /**< Lowest safe stack virtual address.
112	*/	112	*/
113		113
114	void main_bsp(void);	114	void main_bsp(void);
115	void main_ap(void);	115	void main_ap(void);
116		116
117	/*	117	/*
118	* These two functions prevent stack from underflowing during the	118	* These two functions prevent stack from underflowing during the
119	* kernel boot phase when SP is set to the very top of the reserved	119	* kernel boot phase when SP is set to the very top of the reserved
120	* space. The stack could get corrupted by a fooled compiler-generated	120	* space. The stack could get corrupted by a fooled compiler-generated
121	* pop sequence otherwise.	121	* pop sequence otherwise.
122	*/	122	*/
123	static void main_bsp_separated_stack(void);	123	static void main_bsp_separated_stack(void);
124	#ifdef CONFIG_SMP	124	#ifdef CONFIG_SMP
125	static void main_ap_separated_stack(void);	125	static void main_ap_separated_stack(void);
126	#endif	126	#endif
127		127
128	#define CONFIG_STACK_SIZE ((1 << STACK_FRAMES) * STACK_SIZE)	128	#define CONFIG_STACK_SIZE ((1 << STACK_FRAMES) * STACK_SIZE)
129		129
130	/** Main kernel routine for bootstrap CPU.	130	/** Main kernel routine for bootstrap CPU.
131	*	131	*
132	* Initializes the kernel by bootstrap CPU.	132	* Initializes the kernel by bootstrap CPU.
133	* This function passes control directly to	133	* This function passes control directly to
134	* main_bsp_separated_stack().	134	* main_bsp_separated_stack().
135	*	135	*
136	* Assuming interrupts_disable().	136	* Assuming interrupts_disable().
137	*	137	*
138	*/	138	*/
139	void main_bsp(void)	139	void main_bsp(void)
140	{	140	{
141	config.cpu_count = 1;	141	config.cpu_count = 1;
142	config.cpu_active = 1;	142	config.cpu_active = 1;
143		143
144	config.base = hardcoded_load_address;	144	config.base = hardcoded_load_address;
145	config.kernel_size = ALIGN_UP(hardcoded_ktext_size +	145	config.kernel_size = ALIGN_UP(hardcoded_ktext_size +
146	hardcoded_kdata_size, PAGE_SIZE);	146	hardcoded_kdata_size, PAGE_SIZE);
147	config.stack_size = CONFIG_STACK_SIZE;	147	config.stack_size = CONFIG_STACK_SIZE;
148		148
149	/* Initialy the stack is placed just after the kernel */	149	/* Initialy the stack is placed just after the kernel */
150	config.stack_base = config.base + config.kernel_size;	150	config.stack_base = config.base + config.kernel_size;
151		151
152	/* Avoid placing stack on top of init */	152	/* Avoid placing stack on top of init */
153	count_t i;	153	count_t i;
154	for (i = 0; i < init.cnt; i++) {	154	for (i = 0; i < init.cnt; i++) {
155	if (PA_overlaps(config.stack_base, config.stack_size,	155	if (PA_overlaps(config.stack_base, config.stack_size,
156	init.tasks[i].addr, init.tasks[i].size))	156	init.tasks[i].addr, init.tasks[i].size))
157	config.stack_base = ALIGN_UP(init.tasks[i].addr +	157	config.stack_base = ALIGN_UP(init.tasks[i].addr +
158	init.tasks[i].size, config.stack_size);	158	init.tasks[i].size, config.stack_size);
159	}	159	}
160		160
161	/* Avoid placing stack on top of boot allocations. */	161	/* Avoid placing stack on top of boot allocations. */
162	if (ballocs.size) {	162	if (ballocs.size) {
163	if (PA_overlaps(config.stack_base, config.stack_size,	163	if (PA_overlaps(config.stack_base, config.stack_size,
164	ballocs.base, ballocs.size))	164	ballocs.base, ballocs.size))
165	config.stack_base = ALIGN_UP(ballocs.base +	165	config.stack_base = ALIGN_UP(ballocs.base +
166	ballocs.size, PAGE_SIZE);	166	ballocs.size, PAGE_SIZE);
167	}	167	}
168		168
169	if (config.stack_base < stack_safe)	169	if (config.stack_base < stack_safe)
170	config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);	170	config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);
171		171
172	context_save(&ctx);	172	context_save(&ctx);
173	context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base,	173	context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base,
174	THREAD_STACK_SIZE);	174	THREAD_STACK_SIZE);
175	context_restore(&ctx);	175	context_restore(&ctx);
176	/* not reached */	176	/* not reached */
177	}	177	}
178		178
179		179
180	/** Main kernel routine for bootstrap CPU using new stack.	180	/** Main kernel routine for bootstrap CPU using new stack.
181	*	181	*
182	* Second part of main_bsp().	182	* Second part of main_bsp().
183	*	183	*
184	*/	184	*/
185	void main_bsp_separated_stack(void)	185	void main_bsp_separated_stack(void)
186	{	186	{
187	task_t *k;	187	task_t *k;
188	thread_t *t;	188	thread_t *t;
189	count_t i;	189	count_t i;
190		190
191	the_initialize(THE);	191	the_initialize(THE);
192		192
193	/*	193	/*
194	* kconsole data structures must be initialized very early	194	* kconsole data structures must be initialized very early
195	* because other subsystems will register their respective	195	* because other subsystems will register their respective
196	* commands.	196	* commands.
197	*/	197	*/
198	kconsole_init();	198	kconsole_init();
199		199
200	/*	200	/*
201	* Exception handler initialization, before architecture	201	* Exception handler initialization, before architecture
202	* starts adding its own handlers	202	* starts adding its own handlers
203	*/	203	*/
204	exc_init();	204	exc_init();
205		205
206	/*	206	/*
207	* Memory management subsystems initialization.	207	* Memory management subsystems initialization.
208	*/	208	*/
209	arch_pre_mm_init();	209	arch_pre_mm_init();
210	frame_init();	210	frame_init();
211	/* Initialize at least 1 memory segment big enough for slab to work. */	211	/* Initialize at least 1 memory segment big enough for slab to work. */
212	slab_cache_init();	212	slab_cache_init();
213	btree_init();	213	btree_init();
214	as_init();	214	as_init();
215	page_init();	215	page_init();
216	tlb_init();	216	tlb_init();
217	ddi_init();	217	ddi_init();
218	arch_post_mm_init();	218	arch_post_mm_init();
219		219
220	version_print();	220	version_print();
221	printf("kernel: %.*p hardcoded_ktext_size=%zd KB, "	221	printf("kernel: %.*p hardcoded_ktext_size=%zd KB, "
222	"hardcoded_kdata_size=%zd KB\n", sizeof(uintptr_t) * 2,	222	"hardcoded_kdata_size=%zd KB\n", sizeof(uintptr_t) * 2,
223	config.base, SIZE2KB(hardcoded_ktext_size),	223	config.base, SIZE2KB(hardcoded_ktext_size),
224	SIZE2KB(hardcoded_kdata_size));	224	SIZE2KB(hardcoded_kdata_size));
225	printf("stack: %.p size=%zd KB\n", sizeof(uintptr_t) 2,	225	printf("stack: %.p size=%zd KB\n", sizeof(uintptr_t) 2,
226	config.stack_base, SIZE2KB(config.stack_size));	226	config.stack_base, SIZE2KB(config.stack_size));
227		227
228	arch_pre_smp_init();	228	arch_pre_smp_init();
229	smp_init();	229	smp_init();
230	/* Slab must be initialized after we know the number of processors. */	230	/* Slab must be initialized after we know the number of processors. */
231	slab_enable_cpucache();	231	slab_enable_cpucache();
232		232
233	printf("Detected %zu CPU(s), %llu MB free memory\n",	233	printf("Detected %zu CPU(s), %llu MB free memory\n",
234	config.cpu_count, SIZE2MB(zone_total_size()));	234	config.cpu_count, SIZE2MB(zone_total_size()));
235	cpu_init();	235	cpu_init();
236		236
237	calibrate_delay_loop();	237	calibrate_delay_loop();
238	clock_counter_init();	238	clock_counter_init();
239	timeout_init();	239	timeout_init();
240	scheduler_init();	240	scheduler_init();
241	task_init();	241	task_init();
242	thread_init();	242	thread_init();
243	futex_init();	243	futex_init();
244	klog_init();	244	klog_init();
245		245
246	if (init.cnt > 0) {	246	if (init.cnt > 0) {
247	for (i = 0; i < init.cnt; i++)	247	for (i = 0; i < init.cnt; i++)
248	printf("init[%zd].addr=%.*p, init[%zd].size=%zd\n", i,	248	printf("init[%zd].addr=%.*p, init[%zd].size=%zd\n", i,
249	sizeof(uintptr_t) * 2, init.tasks[i].addr, i,	249	sizeof(uintptr_t) * 2, init.tasks[i].addr, i,
250	init.tasks[i].size);	250	init.tasks[i].size);
251	} else	251	} else
252	printf("No init binaries found\n");	252	printf("No init binaries found\n");
253		253
254	ipc_init();	254	ipc_init();
255		255
256	/*	256	/*
257	* Create kernel task.	257	* Create kernel task.
258	*/	258	*/
259	k = task_create(AS_KERNEL, "kernel");	259	k = task_create(AS_KERNEL, "kernel");
260	if (!k)	260	if (!k)
261	panic("can't create kernel task\n");	261	panic("can't create kernel task\n");
262		262
263	/*	263	/*
264	* Create the first thread.	264	* Create the first thread.
265	*/	265	*/
266	t = thread_create(kinit, NULL, k, 0, "kinit", true);	266	t = thread_create(kinit, NULL, k, 0, "kinit", true);
267	if (!t)	267	if (!t)
268	panic("can't create kinit thread\n");	268	panic("can't create kinit thread\n");
269	thread_ready(t);	269	thread_ready(t);
270		270
271	/*	271	/*
272	* This call to scheduler() will return to kinit,	272	* This call to scheduler() will return to kinit,
273	* starting the thread of kernel threads.	273	* starting the thread of kernel threads.
274	*/	274	*/
275	scheduler();	275	scheduler();
276	/* not reached */	276	/* not reached */
277	}	277	}
278		278
279		279
280	#ifdef CONFIG_SMP	280	#ifdef CONFIG_SMP
281	/** Main kernel routine for application CPUs.	281	/** Main kernel routine for application CPUs.
282	*	282	*
283	* Executed by application processors, temporary stack	283	* Executed by application processors, temporary stack
284	* is at ctx.sp which was set during BSP boot.	284	* is at ctx.sp which was set during BSP boot.
285	* This function passes control directly to	285	* This function passes control directly to
286	* main_ap_separated_stack().	286	* main_ap_separated_stack().
287	*	287	*
288	* Assuming interrupts_disable()'d.	288	* Assuming interrupts_disable()'d.
289	*	289	*
290	*/	290	*/
291	void main_ap(void)	291	void main_ap(void)
292	{	292	{
293	/*	293	/*
294	* Incrementing the active CPU counter will guarantee that the	294	* Incrementing the active CPU counter will guarantee that the
295	* *_init() functions can find out that they need to	295	* *_init() functions can find out that they need to
296	* do initialization for AP only.	296	* do initialization for AP only.
297	*/	297	*/
298	config.cpu_active++;	298	config.cpu_active++;
299		299
300	/*	300	/*
301	* The THE structure is well defined because ctx.sp is used as stack.	301	* The THE structure is well defined because ctx.sp is used as stack.
302	*/	302	*/
303	the_initialize(THE);	303	the_initialize(THE);
304		304
305	arch_pre_mm_init();	305	arch_pre_mm_init();
306	frame_init();	306	frame_init();
307	page_init();	307	page_init();
308	tlb_init();	308	tlb_init();
309	arch_post_mm_init();	309	arch_post_mm_init();
310		310
311	cpu_init();	311	cpu_init();
312	calibrate_delay_loop();	312	calibrate_delay_loop();
313	arch_post_cpu_init();	313	arch_post_cpu_init();
314		314
315	the_copy(THE, (the_t *) CPU->stack);	315	the_copy(THE, (the_t *) CPU->stack);
316		316
317	/*	317	/*
318	* If we woke kmp up before we left the kernel stack, we could	318	* If we woke kmp up before we left the kernel stack, we could
319	* collide with another CPU coming up. To prevent this, we	319	* collide with another CPU coming up. To prevent this, we
320	* switch to this cpu's private stack prior to waking kmp up.	320	* switch to this cpu's private stack prior to waking kmp up.
321	*/	321	*/
322	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack),	322	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack),
323	(uintptr_t) CPU->stack, CPU_STACK_SIZE);	323	(uintptr_t) CPU->stack, CPU_STACK_SIZE);
324	context_restore(&CPU->saved_context);	324	context_restore(&CPU->saved_context);
325	/* not reached */	325	/* not reached */
326	}	326	}
327		327
328		328
329	/** Main kernel routine for application CPUs using new stack.	329	/** Main kernel routine for application CPUs using new stack.
330	*	330	*
331	* Second part of main_ap().	331	* Second part of main_ap().
332	*	332	*
333	*/	333	*/
334	void main_ap_separated_stack(void)	334	void main_ap_separated_stack(void)
335	{	335	{
336	/*	336	/*
337	* Configure timeouts for this cpu.	337	* Configure timeouts for this cpu.
338	*/	338	*/
339	timeout_init();	339	timeout_init();
340		340
341	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	341	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
342	scheduler();	342	scheduler();
343	/* not reached */	343	/* not reached */
344	}	344	}
345	#endif /* CONFIG_SMP */	345	#endif /* CONFIG_SMP */
346		346
347	/** @}	347	/** @}
348	*/	348	*/
349		349

Subversion Repositories HelenOS

(root)/trunk/kernel/generic/src/main/main.c – Rev 2725 → 2745