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.
 */
 
/** @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>
 
#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;
 
/** 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.
 */
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. */
 
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)
{
    uintptr_t stackaddr;
 
    config.cpu_count = 1;
    config.cpu_active = 1;
   
    config.base = hardcoded_load_address;
    config.memory_size = get_memory_size();
   
    config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
    stackaddr = config.base + config.kernel_size;
   
    /* Avoid placing kernel on top of init */
    count_t i;
    bool overlap = false;
    for (i = 0; i < init.cnt; i++)
        if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
            stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
            init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
            overlap = true;
        }
   
    if (!overlap)
        config.kernel_size += CONFIG_STACK_SIZE;
   
    context_save(&ctx);
    context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);
    context_restore(&ctx);
    /* not reached */
}
 
 
/** Main kernel routine for bootstrap CPU using new stack.
 *
 * Second part of main_bsp().
 *
 */
void main_bsp_separated_stack(void)
{
    task_t *k;
    thread_t *t;
    count_t i;
   
    the_initialize(THE);
 
    /*
     * kconsole data structures must be initialized very early
     * because other subsystems will register their respective
     * commands.
     */
    kconsole_init();
   
    /*
     * Exception handler initialization, before architecture
     * starts adding its own handlers
     */
    exc_init();
 
    /*
     * Memory management subsystems initialization.
     */
    arch_pre_mm_init();
    frame_init();       /* Initialize at least 1 memory segment big enough for slab to work */
    slab_cache_init();
    btree_init();
    as_init();
    page_init();
    tlb_init();
    arch_post_mm_init();
 
    version_print();
    printf("%.*p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) * 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(uintptr_t) * 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), (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 1757	Rev 1780
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		82
83	#ifdef CONFIG_SMP	83	#ifdef CONFIG_SMP
84	#include <arch/smp/apic.h>	84	#include <arch/smp/apic.h>
85	#include <arch/smp/mps.h>	85	#include <arch/smp/mps.h>
86	#endif /* CONFIG_SMP */	86	#endif /* CONFIG_SMP */
87	#include <smp/smp.h>	87	#include <smp/smp.h>
88		88
89	/** Global configuration structure. */	89	/** Global configuration structure. */
90	config_t config;	90	config_t config;
91		91
92	/** Initial user-space tasks */	92	/** Initial user-space tasks */
93	init_t init = {	93	init_t init = {
94	0	94	0
95	};	95	};
96		96
97	context_t ctx;	97	context_t ctx;
98		98
99	/*	99	/*
100	* These 'hardcoded' variables will be intialized by	100	* These 'hardcoded' variables will be intialized by
101	* the linker or the low level assembler code with	101	* the linker or the low level assembler code with
102	* appropriate sizes and addresses.	102	* appropriate sizes and addresses.
103	*/	103	*/
104	__address hardcoded_load_address = 0; /*< Virtual address of where the kernel is loaded. /	104	uintptr_t hardcoded_load_address = 0; /*< Virtual address of where the kernel is loaded. /
105	size_t hardcoded_ktext_size = 0; /*< Size of the kernel code in bytes. /	105	size_t hardcoded_ktext_size = 0; /*< Size of the kernel code in bytes. /
106	size_t hardcoded_kdata_size = 0; /*< Size of the kernel data in bytes. /	106	size_t hardcoded_kdata_size = 0; /*< Size of the kernel data in bytes. /
107		107
108	void main_bsp(void);	108	void main_bsp(void);
109	void main_ap(void);	109	void main_ap(void);
110		110
111	/*	111	/*
112	* These two functions prevent stack from underflowing during the	112	* These two functions prevent stack from underflowing during the
113	* kernel boot phase when SP is set to the very top of the reserved	113	* kernel boot phase when SP is set to the very top of the reserved
114	* space. The stack could get corrupted by a fooled compiler-generated	114	* space. The stack could get corrupted by a fooled compiler-generated
115	* pop sequence otherwise.	115	* pop sequence otherwise.
116	*/	116	*/
117	static void main_bsp_separated_stack(void);	117	static void main_bsp_separated_stack(void);
118	#ifdef CONFIG_SMP	118	#ifdef CONFIG_SMP
119	static void main_ap_separated_stack(void);	119	static void main_ap_separated_stack(void);
120	#endif	120	#endif
121		121
122	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)	122	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)
123		123
124	/** Main kernel routine for bootstrap CPU.	124	/** Main kernel routine for bootstrap CPU.
125	*	125	*
126	* Initializes the kernel by bootstrap CPU.	126	* Initializes the kernel by bootstrap CPU.
127	* This function passes control directly to	127	* This function passes control directly to
128	* main_bsp_separated_stack().	128	* main_bsp_separated_stack().
129	*	129	*
130	* Assuming interrupts_disable().	130	* Assuming interrupts_disable().
131	*	131	*
132	*/	132	*/
133	void main_bsp(void)	133	void main_bsp(void)
134	{	134	{
135	__address stackaddr;	135	uintptr_t stackaddr;
136		136
137	config.cpu_count = 1;	137	config.cpu_count = 1;
138	config.cpu_active = 1;	138	config.cpu_active = 1;
139		139
140	config.base = hardcoded_load_address;	140	config.base = hardcoded_load_address;
141	config.memory_size = get_memory_size();	141	config.memory_size = get_memory_size();
142		142
143	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);	143	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
144	stackaddr = config.base + config.kernel_size;	144	stackaddr = config.base + config.kernel_size;
145		145
146	/* Avoid placing kernel on top of init */	146	/* Avoid placing kernel on top of init */
147	count_t i;	147	count_t i;
148	bool overlap = false;	148	bool overlap = false;
149	for (i = 0; i < init.cnt; i++)	149	for (i = 0; i < init.cnt; i++)
150	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {	150	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
151	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);	151	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
152	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;	152	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
153	overlap = true;	153	overlap = true;
154	}	154	}
155		155
156	if (!overlap)	156	if (!overlap)
157	config.kernel_size += CONFIG_STACK_SIZE;	157	config.kernel_size += CONFIG_STACK_SIZE;
158		158
159	context_save(&ctx);	159	context_save(&ctx);
160	context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);	160	context_set(&ctx, FADDR(main_bsp_separated_stack), stackaddr, THREAD_STACK_SIZE);
161	context_restore(&ctx);	161	context_restore(&ctx);
162	/* not reached */	162	/* not reached */
163	}	163	}
164		164
165		165
166	/** Main kernel routine for bootstrap CPU using new stack.	166	/** Main kernel routine for bootstrap CPU using new stack.
167	*	167	*
168	* Second part of main_bsp().	168	* Second part of main_bsp().
169	*	169	*
170	*/	170	*/
171	void main_bsp_separated_stack(void)	171	void main_bsp_separated_stack(void)
172	{	172	{
173	task_t *k;	173	task_t *k;
174	thread_t *t;	174	thread_t *t;
175	count_t i;	175	count_t i;
176		176
177	the_initialize(THE);	177	the_initialize(THE);
178		178
179	/*	179	/*
180	* kconsole data structures must be initialized very early	180	* kconsole data structures must be initialized very early
181	* because other subsystems will register their respective	181	* because other subsystems will register their respective
182	* commands.	182	* commands.
183	*/	183	*/
184	kconsole_init();	184	kconsole_init();
185		185
186	/*	186	/*
187	* Exception handler initialization, before architecture	187	* Exception handler initialization, before architecture
188	* starts adding its own handlers	188	* starts adding its own handlers
189	*/	189	*/
190	exc_init();	190	exc_init();
191		191
192	/*	192	/*
193	* Memory management subsystems initialization.	193	* Memory management subsystems initialization.
194	*/	194	*/
195	arch_pre_mm_init();	195	arch_pre_mm_init();
196	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */	196	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */
197	slab_cache_init();	197	slab_cache_init();
198	btree_init();	198	btree_init();
199	as_init();	199	as_init();
200	page_init();	200	page_init();
201	tlb_init();	201	tlb_init();
202	arch_post_mm_init();	202	arch_post_mm_init();
203		203
204	version_print();	204	version_print();
205	printf("%.p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(__address) 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);	205	printf("%.p: hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);
206		206
207	arch_pre_smp_init();	207	arch_pre_smp_init();
208	smp_init();	208	smp_init();
209		209
210	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */	210	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
211		211
212	printf("config.memory_size=%zdM\n", config.memory_size >> 20);	212	printf("config.memory_size=%zdM\n", config.memory_size >> 20);
213	printf("config.cpu_count=%zd\n", config.cpu_count);	213	printf("config.cpu_count=%zd\n", config.cpu_count);
214	cpu_init();	214	cpu_init();
215		215
216	calibrate_delay_loop();	216	calibrate_delay_loop();
217	clock_counter_init();	217	clock_counter_init();
218	timeout_init();	218	timeout_init();
219	scheduler_init();	219	scheduler_init();
220	task_init();	220	task_init();
221	thread_init();	221	thread_init();
222	futex_init();	222	futex_init();
223	klog_init();	223	klog_init();
224		224
225	for (i = 0; i < init.cnt; i++)	225	for (i = 0; i < init.cnt; i++)
226	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(__address) 2, init.tasks[i].addr, i, init.tasks[i].size);	226	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(uintptr_t) 2, init.tasks[i].addr, i, init.tasks[i].size);
227		227
228	ipc_init();	228	ipc_init();
229		229
230	/*	230	/*
231	* Create kernel task.	231	* Create kernel task.
232	*/	232	*/
233	k = task_create(AS_KERNEL, "KERNEL");	233	k = task_create(AS_KERNEL, "KERNEL");
234	if (!k)	234	if (!k)
235	panic("can't create kernel task\n");	235	panic("can't create kernel task\n");
236		236
237	/*	237	/*
238	* Create the first thread.	238	* Create the first thread.
239	*/	239	*/
240	t = thread_create(kinit, NULL, k, 0, "kinit");	240	t = thread_create(kinit, NULL, k, 0, "kinit");
241	if (!t)	241	if (!t)
242	panic("can't create kinit thread\n");	242	panic("can't create kinit thread\n");
243	thread_ready(t);	243	thread_ready(t);
244		244
245	/*	245	/*
246	* This call to scheduler() will return to kinit,	246	* This call to scheduler() will return to kinit,
247	* starting the thread of kernel threads.	247	* starting the thread of kernel threads.
248	*/	248	*/
249	scheduler();	249	scheduler();
250	/* not reached */	250	/* not reached */
251	}	251	}
252		252
253		253
254	#ifdef CONFIG_SMP	254	#ifdef CONFIG_SMP
255	/** Main kernel routine for application CPUs.	255	/** Main kernel routine for application CPUs.
256	*	256	*
257	* Executed by application processors, temporary stack	257	* Executed by application processors, temporary stack
258	* is at ctx.sp which was set during BP boot.	258	* is at ctx.sp which was set during BP boot.
259	* This function passes control directly to	259	* This function passes control directly to
260	* main_ap_separated_stack().	260	* main_ap_separated_stack().
261	*	261	*
262	* Assuming interrupts_disable()'d.	262	* Assuming interrupts_disable()'d.
263	*	263	*
264	*/	264	*/
265	void main_ap(void)	265	void main_ap(void)
266	{	266	{
267	/*	267	/*
268	* Incrementing the active CPU counter will guarantee that the	268	* Incrementing the active CPU counter will guarantee that the
269	* pm_init() will not attempt to build GDT and IDT tables again.	269	* pm_init() will not attempt to build GDT and IDT tables again.
270	* Neither frame_init() will do the complete thing. Neither cpu_init()	270	* Neither frame_init() will do the complete thing. Neither cpu_init()
271	* will do.	271	* will do.
272	*/	272	*/
273	config.cpu_active++;	273	config.cpu_active++;
274		274
275	/*	275	/*
276	* The THE structure is well defined because ctx.sp is used as stack.	276	* The THE structure is well defined because ctx.sp is used as stack.
277	*/	277	*/
278	the_initialize(THE);	278	the_initialize(THE);
279		279
280	arch_pre_mm_init();	280	arch_pre_mm_init();
281	frame_init();	281	frame_init();
282	page_init();	282	page_init();
283	tlb_init();	283	tlb_init();
284	arch_post_mm_init();	284	arch_post_mm_init();
285		285
286	cpu_init();	286	cpu_init();
287		287
288	calibrate_delay_loop();	288	calibrate_delay_loop();
289		289
290	l_apic_init();	290	l_apic_init();
291	l_apic_debug();	291	l_apic_debug();
292		292
293	the_copy(THE, (the_t *) CPU->stack);	293	the_copy(THE, (the_t *) CPU->stack);
294		294
295	/*	295	/*
296	* If we woke kmp up before we left the kernel stack, we could	296	* If we woke kmp up before we left the kernel stack, we could
297	* collide with another CPU coming up. To prevent this, we	297	* collide with another CPU coming up. To prevent this, we
298	* switch to this cpu's private stack prior to waking kmp up.	298	* switch to this cpu's private stack prior to waking kmp up.
299	*/	299	*/
300	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);	300	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (uintptr_t) CPU->stack, CPU_STACK_SIZE);
301	context_restore(&CPU->saved_context);	301	context_restore(&CPU->saved_context);
302	/* not reached */	302	/* not reached */
303	}	303	}
304		304
305		305
306	/** Main kernel routine for application CPUs using new stack.	306	/** Main kernel routine for application CPUs using new stack.
307	*	307	*
308	* Second part of main_ap().	308	* Second part of main_ap().
309	*	309	*
310	*/	310	*/
311	void main_ap_separated_stack(void)	311	void main_ap_separated_stack(void)
312	{	312	{
313	/*	313	/*
314	* Configure timeouts for this cpu.	314	* Configure timeouts for this cpu.
315	*/	315	*/
316	timeout_init();	316	timeout_init();
317		317
318	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	318	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
319	scheduler();	319	scheduler();
320	/* not reached */	320	/* not reached */
321	}	321	}
322	#endif /* CONFIG_SMP */	322	#endif /* CONFIG_SMP */
323		323
324	/** @}	324	/** @}
325	*/	325	*/
326		326

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(root)/kernel/trunk/generic/src/main/main.c – Rev 1757 → 1780