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.
 */
 
#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 <arch/arch.h>
#include <arch.h>
#include <arch/faddr.h>
#include <typedefs.h>
#include <ipc/ipc.h>
#include <macros.h>
 
#ifdef CONFIG_SMP
#include <arch/smp/apic.h>
#include <arch/smp/mps.h>
#endif /* CONFIG_SMP */
#include <smp/smp.h>
 
config_t config;    /**< Global configuration structure. */
init_t init = {0};  /**< Initial user-space tasks */
 
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
 
/** Bootstrap CPU main kernel routine
 *
 * 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, CONFIG_STACK_SIZE);
    context_restore(&ctx);
    /* not reached */
}
 
 
/** Bootstrap CPU main kernel routine stack wrapper
 *
 * Second part of main_bsp().
 *
 */
void main_bsp_separated_stack(void)
{
    task_t *k;
    thread_t *t;
   
    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();
    as_init();
    page_init();
    tlb_init();
    arch_post_mm_init();   
 
 
    version_print();
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
 
    arch_pre_smp_init();
    smp_init();
   
    slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
 
 
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
    printf("config.cpu_count=%d\n", config.cpu_count);
    cpu_init();
   
    calibrate_delay_loop();
    timeout_init();
    scheduler_init();
    task_init();
    thread_init();
   
    count_t i;
    for (i = 0; i < init.cnt; i++)
        printf("init[%d].addr=%P, init[%d].size=%d\n", i, 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
/** Application CPUs main kernel routine
 *
 * 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 */
}
 
 
/** Application CPUs main kernel routine stack wrapper
 *
 * 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 1063	Rev 1101
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	#include <arch/asm.h>	29	#include <arch/asm.h>
30	#include <context.h>	30	#include <context.h>
31	#include <print.h>	31	#include <print.h>
32	#include <panic.h>	32	#include <panic.h>
33	#include <debug.h>	33	#include <debug.h>
34	#include <config.h>	34	#include <config.h>
35	#include <time/clock.h>	35	#include <time/clock.h>
36	#include <proc/scheduler.h>	36	#include <proc/scheduler.h>
37	#include <proc/thread.h>	37	#include <proc/thread.h>
38	#include <proc/task.h>	38	#include <proc/task.h>
39	#include <main/kinit.h>	39	#include <main/kinit.h>
40	#include <main/version.h>	40	#include <main/version.h>
41	#include <console/kconsole.h>	41	#include <console/kconsole.h>
42	#include <cpu.h>	42	#include <cpu.h>
43	#include <align.h>	43	#include <align.h>
44	#include <interrupt.h>	44	#include <interrupt.h>
45	#include <arch/mm/memory_init.h>	45	#include <arch/mm/memory_init.h>
46	#include <mm/frame.h>	46	#include <mm/frame.h>
47	#include <mm/page.h>	47	#include <mm/page.h>
48	#include <genarch/mm/page_pt.h>	48	#include <genarch/mm/page_pt.h>
49	#include <mm/tlb.h>	49	#include <mm/tlb.h>
50	#include <mm/as.h>	50	#include <mm/as.h>
51	#include <mm/slab.h>	51	#include <mm/slab.h>
52	#include <synch/waitq.h>	52	#include <synch/waitq.h>
53	#include <arch/arch.h>	53	#include <arch/arch.h>
54	#include <arch.h>	54	#include <arch.h>
55	#include <arch/faddr.h>	55	#include <arch/faddr.h>
56	#include <typedefs.h>	56	#include <typedefs.h>
57	#include <ipc/ipc.h>	57	#include <ipc/ipc.h>
58	#include <macros.h>	58	#include <macros.h>
59		59
60	#ifdef CONFIG_SMP	60	#ifdef CONFIG_SMP
61	#include <arch/smp/apic.h>	61	#include <arch/smp/apic.h>
62	#include <arch/smp/mps.h>	62	#include <arch/smp/mps.h>
63	#endif /* CONFIG_SMP */	63	#endif /* CONFIG_SMP */
64	#include <smp/smp.h>	64	#include <smp/smp.h>
65		65
66	config_t config; /*< Global configuration structure. /	66	config_t config; /*< Global configuration structure. /
67	init_t init = {0}; /*< Initial user-space tasks /	67	init_t init = {0}; /*< Initial user-space tasks /
68		68
69	context_t ctx;	69	context_t ctx;
70		70
71	/**	71	/**
72	* These 'hardcoded' variables will be intialized by	72	* These 'hardcoded' variables will be intialized by
73	* the linker or the low level assembler code with	73	* the linker or the low level assembler code with
74	* appropriate sizes and addresses.	74	* appropriate sizes and addresses.
75	*/	75	*/
76	__address hardcoded_load_address = 0;	76	__address hardcoded_load_address = 0;
77	size_t hardcoded_ktext_size = 0;	77	size_t hardcoded_ktext_size = 0;
78	size_t hardcoded_kdata_size = 0;	78	size_t hardcoded_kdata_size = 0;
79		79
80	void main_bsp(void);	80	void main_bsp(void);
81	void main_ap(void);	81	void main_ap(void);
82		82
83	/*	83	/*
84	* These two functions prevent stack from underflowing during the	84	* These two functions prevent stack from underflowing during the
85	* kernel boot phase when SP is set to the very top of the reserved	85	* kernel boot phase when SP is set to the very top of the reserved
86	* space. The stack could get corrupted by a fooled compiler-generated	86	* space. The stack could get corrupted by a fooled compiler-generated
87	* pop sequence otherwise.	87	* pop sequence otherwise.
88	*/	88	*/
89	static void main_bsp_separated_stack(void);	89	static void main_bsp_separated_stack(void);
90	#ifdef CONFIG_SMP	90	#ifdef CONFIG_SMP
91	static void main_ap_separated_stack(void);	91	static void main_ap_separated_stack(void);
92	#endif	92	#endif
93		93
94	/** Bootstrap CPU main kernel routine	94	/** Bootstrap CPU main kernel routine
95	*	95	*
96	* Initializes the kernel by bootstrap CPU.	96	* Initializes the kernel by bootstrap CPU.
97	* This function passes control directly to	97	* This function passes control directly to
98	* main_bsp_separated_stack().	98	* main_bsp_separated_stack().
99	*	99	*
100	* Assuming interrupts_disable().	100	* Assuming interrupts_disable().
101	*	101	*
102	*/	102	*/
103	void main_bsp(void)	103	void main_bsp(void)
104	{	104	{
105	__address stackaddr;	105	__address stackaddr;
106		106
107	config.cpu_count = 1;	107	config.cpu_count = 1;
108	config.cpu_active = 1;	108	config.cpu_active = 1;
109		109
110	config.base = hardcoded_load_address;	110	config.base = hardcoded_load_address;
111	config.memory_size = get_memory_size();	111	config.memory_size = get_memory_size();
112		112
113	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);	113	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
114	stackaddr = config.base + config.kernel_size;	114	stackaddr = config.base + config.kernel_size;
115		115
116	/* Avoid placing kernel on top of init */	116	/* Avoid placing kernel on top of init */
117	count_t i;	117	count_t i;
118	bool overlap = false;	118	bool overlap = false;
119	for (i = 0; i < init.cnt; i++)	119	for (i = 0; i < init.cnt; i++)
120	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {	120	if (PA_overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
121	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);	121	stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
122	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;	122	init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
123	overlap = true;	123	overlap = true;
124	}	124	}
125		125
126	if (!overlap)	126	if (!overlap)
127	config.kernel_size += CONFIG_STACK_SIZE;	127	config.kernel_size += CONFIG_STACK_SIZE;
128		128
129	context_save(&ctx);	129	context_save(&ctx);
130	context_set(&ctx, FADDR(main_bsp_separated_stack),	130	context_set(&ctx, FADDR(main_bsp_separated_stack),
131	stackaddr, CONFIG_STACK_SIZE);	131	stackaddr, CONFIG_STACK_SIZE);
132	context_restore(&ctx);	132	context_restore(&ctx);
133	/* not reached */	133	/* not reached */
134	}	134	}
135		135
136		136
137	/** Bootstrap CPU main kernel routine stack wrapper	137	/** Bootstrap CPU main kernel routine stack wrapper
138	*	138	*
139	* Second part of main_bsp().	139	* Second part of main_bsp().
140	*	140	*
141	*/	141	*/
142	void main_bsp_separated_stack(void)	142	void main_bsp_separated_stack(void)
143	{	143	{
144	task_t *k;	144	task_t *k;
145	thread_t *t;	145	thread_t *t;
146		146
147	the_initialize(THE);	147	the_initialize(THE);
148	/*	148	/*
149	* kconsole data structures must be initialized very early	149	* kconsole data structures must be initialized very early
150	* because other subsystems will register their respective	150	* because other subsystems will register their respective
151	* commands.	151	* commands.
152	*/	152	*/
153	kconsole_init();	153	kconsole_init();
154		154
155	/*	155	/*
156	* Exception handler initialization, before architecture	156	* Exception handler initialization, before architecture
157	* starts adding its own handlers	157	* starts adding its own handlers
158	*/	158	*/
159	exc_init();	159	exc_init();
160		160
161	/*	161	/*
162	* Memory management subsystems initialization.	162	* Memory management subsystems initialization.
163	*/	163	*/
164	arch_pre_mm_init();	164	arch_pre_mm_init();
165	/* Initialize at least 1 memory segment big enough for slab to work */	165	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */
166	frame_init();	-
167	slab_cache_init();	166	slab_cache_init();
168	as_init();	167	as_init();
169	page_init();	168	page_init();
170	tlb_init();	169	tlb_init();
171	arch_post_mm_init();	170	arch_post_mm_init();
172	version_print();	-
173		171
-		172	version_print();
174	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",	173	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
175	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);	174	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
176		175
177	arch_pre_smp_init();	176	arch_pre_smp_init();
178	smp_init();	177	smp_init();
-		178
179	/* Slab must be initialized AFTER we know the number of processors */	179	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
180	slab_enable_cpucache();	-
181		180
182	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));	181	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
183	printf("config.cpu_count=%d\n", config.cpu_count);	182	printf("config.cpu_count=%d\n", config.cpu_count);
184	cpu_init();	183	cpu_init();
185		184
186	calibrate_delay_loop();	185	calibrate_delay_loop();
187	timeout_init();	186	timeout_init();
188	scheduler_init();	187	scheduler_init();
189	task_init();	188	task_init();
190	thread_init();	189	thread_init();
191		190
192	count_t i;	191	count_t i;
193	for (i = 0; i < init.cnt; i++)	192	for (i = 0; i < init.cnt; i++)
194	printf("init[%d].addr=%P, init[%d].size=%d\n", i, init.tasks[i].addr, i, init.tasks[i].size);	193	printf("init[%d].addr=%P, init[%d].size=%d\n", i, init.tasks[i].addr, i, init.tasks[i].size);
195		194
196	ipc_init();	195	ipc_init();
197	/*	196	/*
198	* Create kernel task.	197	* Create kernel task.
199	*/	198	*/
200	k = task_create(AS_KERNEL, "KERNEL");	199	k = task_create(AS_KERNEL, "KERNEL");
201	if (!k)	200	if (!k)
202	panic("can't create kernel task\n");	201	panic("can't create kernel task\n");
203		202
204	/*	203	/*
205	* Create the first thread.	204	* Create the first thread.
206	*/	205	*/
207	t = thread_create(kinit, NULL, k, 0, "kinit");	206	t = thread_create(kinit, NULL, k, 0, "kinit");
208	if (!t)	207	if (!t)
209	panic("can't create kinit thread\n");	208	panic("can't create kinit thread\n");
210	thread_ready(t);	209	thread_ready(t);
211		210
212	/*	211	/*
213	* This call to scheduler() will return to kinit,	212	* This call to scheduler() will return to kinit,
214	* starting the thread of kernel threads.	213	* starting the thread of kernel threads.
215	*/	214	*/
216	scheduler();	215	scheduler();
217	/* not reached */	216	/* not reached */
218	}	217	}
219		218
220		219
221	#ifdef CONFIG_SMP	220	#ifdef CONFIG_SMP
222	/** Application CPUs main kernel routine	221	/** Application CPUs main kernel routine
223	*	222	*
224	* Executed by application processors, temporary stack	223	* Executed by application processors, temporary stack
225	* is at ctx.sp which was set during BP boot.	224	* is at ctx.sp which was set during BP boot.
226	* This function passes control directly to	225	* This function passes control directly to
227	* main_ap_separated_stack().	226	* main_ap_separated_stack().
228	*	227	*
229	* Assuming interrupts_disable()'d.	228	* Assuming interrupts_disable()'d.
230	*	229	*
231	*/	230	*/
232	void main_ap(void)	231	void main_ap(void)
233	{	232	{
234	/*	233	/*
235	* Incrementing the active CPU counter will guarantee that the	234	* Incrementing the active CPU counter will guarantee that the
236	* pm_init() will not attempt to build GDT and IDT tables again.	235	* pm_init() will not attempt to build GDT and IDT tables again.
237	* Neither frame_init() will do the complete thing. Neither cpu_init()	236	* Neither frame_init() will do the complete thing. Neither cpu_init()
238	* will do.	237	* will do.
239	*/	238	*/
240	config.cpu_active++;	239	config.cpu_active++;
241		240
242	/*	241	/*
243	* The THE structure is well defined because ctx.sp is used as stack.	242	* The THE structure is well defined because ctx.sp is used as stack.
244	*/	243	*/
245	the_initialize(THE);	244	the_initialize(THE);
246		245
247	arch_pre_mm_init();	246	arch_pre_mm_init();
248	frame_init();	247	frame_init();
249	page_init();	248	page_init();
250	tlb_init();	249	tlb_init();
251	arch_post_mm_init();	250	arch_post_mm_init();
252		251
253	cpu_init();	252	cpu_init();
254		253
255	calibrate_delay_loop();	254	calibrate_delay_loop();
256		255
257	l_apic_init();	256	l_apic_init();
258	l_apic_debug();	257	l_apic_debug();
259		258
260	the_copy(THE, (the_t *) CPU->stack);	259	the_copy(THE, (the_t *) CPU->stack);
261		260
262	/*	261	/*
263	* If we woke kmp up before we left the kernel stack, we could	262	* If we woke kmp up before we left the kernel stack, we could
264	* collide with another CPU coming up. To prevent this, we	263	* collide with another CPU coming up. To prevent this, we
265	* switch to this cpu's private stack prior to waking kmp up.	264	* switch to this cpu's private stack prior to waking kmp up.
266	*/	265	*/
267	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);	266	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
268	context_restore(&CPU->saved_context);	267	context_restore(&CPU->saved_context);
269	/* not reached */	268	/* not reached */
270	}	269	}
271		270
272		271
273	/** Application CPUs main kernel routine stack wrapper	272	/** Application CPUs main kernel routine stack wrapper
274	*	273	*
275	* Second part of main_ap().	274	* Second part of main_ap().
276	*	275	*
277	*/	276	*/
278	void main_ap_separated_stack(void)	277	void main_ap_separated_stack(void)
279	{	278	{
280	/*	279	/*
281	* Configure timeouts for this cpu.	280	* Configure timeouts for this cpu.
282	*/	281	*/
283	timeout_init();	282	timeout_init();
284		283
285	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	284	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
286	scheduler();	285	scheduler();
287	/* not reached */	286	/* not reached */
288	}	287	}
289	#endif /* CONFIG_SMP */	288	#endif /* CONFIG_SMP */
290		289

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/main/main.c – Rev 1063 → 1101