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 <console/kconsole.h>
#include <cpu.h>
#include <align.h>
 
#ifdef CONFIG_SMP
#include <arch/smp/apic.h>
#include <arch/smp/mps.h>
#endif /* CONFIG_SMP */
 
#include <smp/smp.h>
 
#include <arch/mm/memory_init.h>
#include <mm/heap.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <mm/tlb.h>
#include <mm/vm.h>
 
#include <synch/waitq.h>
 
#include <arch/arch.h>
#include <arch.h>
#include <arch/faddr.h>
 
#include <typedefs.h>
 
char *project = "SPARTAN kernel";
char *copyright = "Copyright (C) 2001-2005 HelenOS project";
char *release = RELEASE;
char *name = NAME;
char *arch = STRING(ARCH);
 
#ifdef REVISION
    char *revision = ", revision " REVISION;
#else
 
    char *revision = "";
#endif
 
#ifdef TIMESTAMP
    char *timestamp = " on " TIMESTAMP;
#else
    char *timestamp = "";
#endif
 
 
config_t config;
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;
 
__address init_addr = 0;
size_t init_size = 0;
 
/**
 * Size of memory in bytes taken by kernel and heap.
 */
static size_t kernel_size;
 
/**
 * Size of heap.
 */
static size_t heap_size;
 
 
/**
 * Extra space between heap and stack
 * enforced by alignment requirements.
 */
static size_t heap_delta;
 
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);
static void main_ap_separated_stack(void);
 
/** Bootstrap CPU main kernel routine
 *
 * Initializes the kernel by bootstrap CPU.
 *
 * 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();
 
    heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);
    kernel_size = ALIGN(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);
    heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);
   
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
   
    context_save(&ctx);
    early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, 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)
{
    vm_t *m;
    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();
   
    arch_pre_mm_init();
    early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);
    frame_init();
    page_init();
    tlb_init();
    arch_post_mm_init();
 
    printf("%s, release %s (%s)%s\nBuild%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
    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();
    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();
 
    /*
     * Create kernel vm mapping.
     */
    m = vm_create(GET_PTL0_ADDRESS());
    if (!m)
        panic("can't create kernel vm address space\n");
 
    /*
     * Create kernel task.
     */
    k = task_create(m);
    if (!k)
        panic("can't create kernel task\n");
       
    /*
     * Create the first thread.
     */
    t = thread_create(kinit, NULL, k, 0);
    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.
 *
 * 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 534	Rev 561
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 <config.h>	34	#include <config.h>
34	#include <time/clock.h>	35	#include <time/clock.h>
35	#include <proc/scheduler.h>	36	#include <proc/scheduler.h>
36	#include <proc/thread.h>	37	#include <proc/thread.h>
37	#include <proc/task.h>	38	#include <proc/task.h>
38	#include <main/kinit.h>	39	#include <main/kinit.h>
39	#include <console/kconsole.h>	40	#include <console/kconsole.h>
40	#include <cpu.h>	41	#include <cpu.h>
41	#include <align.h>	42	#include <align.h>
42		43
43	#ifdef CONFIG_SMP	44	#ifdef CONFIG_SMP
44	#include <arch/smp/apic.h>	45	#include <arch/smp/apic.h>
45	#include <arch/smp/mps.h>	46	#include <arch/smp/mps.h>
46	#endif /* CONFIG_SMP */	47	#endif /* CONFIG_SMP */
47		48
48	#include <smp/smp.h>	49	#include <smp/smp.h>
49		50
50	#include <arch/mm/memory_init.h>	51	#include <arch/mm/memory_init.h>
51	#include <mm/heap.h>	52	#include <mm/heap.h>
52	#include <mm/frame.h>	53	#include <mm/frame.h>
53	#include <mm/page.h>	54	#include <mm/page.h>
54	#include <mm/tlb.h>	55	#include <mm/tlb.h>
55	#include <mm/vm.h>	56	#include <mm/vm.h>
56		57
57	#include <synch/waitq.h>	58	#include <synch/waitq.h>
58		59
59	#include <arch/arch.h>	60	#include <arch/arch.h>
60	#include <arch.h>	61	#include <arch.h>
61	#include <arch/faddr.h>	62	#include <arch/faddr.h>
62		63
63	#include <typedefs.h>	64	#include <typedefs.h>
64		65
65	char *project = "SPARTAN kernel";	66	char *project = "SPARTAN kernel";
-		67	char *copyright = "Copyright (C) 2001-2005 HelenOS project";
66	char *release = RELEASE " (" NAME ")";	68	char *release = RELEASE;
67	#ifdef TAG	69	char *name = NAME;
68	char *rr_delimiter = "\n";	70	char *arch = STRING(ARCH);
-		71
-		72	#ifdef REVISION
69	char *revision = TAG;	73	char *revision = ", revision " REVISION;
70	#else	74	#else
71	char *rr_delimiter = "";	-
72	char *revision = "";	75	char *revision = "";
73	#endif	76	#endif
-		77
-		78	#ifdef TIMESTAMP
74	char *copyright = "Copyright (C) 2001-2005 HelenOS project";	79	char *timestamp = " on " TIMESTAMP;
-		80	#else
-		81	char *timestamp = "";
-		82	#endif
-		83
75		84
76	config_t config;	85	config_t config;
77	context_t ctx;	86	context_t ctx;
78		87
79	/**	88	/**
80	* These 'hardcoded' variables will be intialized by	89	* These 'hardcoded' variables will be intialized by
81	* the linker or the low level assembler code with	90	* the linker or the low level assembler code with
82	* appropriate sizes and addresses.	91	* appropriate sizes and addresses.
83	*/	92	*/
84	__address hardcoded_load_address = 0;	93	__address hardcoded_load_address = 0;
85	size_t hardcoded_ktext_size = 0;	94	size_t hardcoded_ktext_size = 0;
86	size_t hardcoded_kdata_size = 0;	95	size_t hardcoded_kdata_size = 0;
87		96
88	__address init_addr = 0;	97	__address init_addr = 0;
89	size_t init_size = 0;	98	size_t init_size = 0;
90		99
91	/**	100	/**
92	* Size of memory in bytes taken by kernel and heap.	101	* Size of memory in bytes taken by kernel and heap.
93	*/	102	*/
94	static size_t kernel_size;	103	static size_t kernel_size;
95		104
96	/**	105	/**
97	* Size of heap.	106	* Size of heap.
98	*/	107	*/
99	static size_t heap_size;	108	static size_t heap_size;
100		109
101		110
102	/**	111	/**
103	* Extra space between heap and stack	112	* Extra space between heap and stack
104	* enforced by alignment requirements.	113	* enforced by alignment requirements.
105	*/	114	*/
106	static size_t heap_delta;	115	static size_t heap_delta;
107		116
108	void main_bsp(void);	117	void main_bsp(void);
109	void main_ap(void);	118	void main_ap(void);
110		119
111	/*	120	/*
112	* These two functions prevent stack from underflowing during the	121	* These two functions prevent stack from underflowing during the
113	* kernel boot phase when SP is set to the very top of the reserved	122	* 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	123	* space. The stack could get corrupted by a fooled compiler-generated
115	* pop sequence otherwise.	124	* pop sequence otherwise.
116	*/	125	*/
117	static void main_bsp_separated_stack(void);	126	static void main_bsp_separated_stack(void);
118	static void main_ap_separated_stack(void);	127	static void main_ap_separated_stack(void);
119		128
120	/** Bootstrap CPU main kernel routine	129	/** Bootstrap CPU main kernel routine
121	*	130	*
122	* Initializes the kernel by bootstrap CPU.	131	* Initializes the kernel by bootstrap CPU.
123	*	132	*
124	* Assuming interrupts_disable().	133	* Assuming interrupts_disable().
125	*	134	*
126	*/	135	*/
127	void main_bsp(void)	136	void main_bsp(void)
128	{	137	{
129	config.cpu_count = 1;	138	config.cpu_count = 1;
130	config.cpu_active = 1;	139	config.cpu_active = 1;
131	config.base = hardcoded_load_address;	140	config.base = hardcoded_load_address;
132	config.memory_size = get_memory_size();	141	config.memory_size = get_memory_size();
133		142
134	heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);	143	heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);
135	kernel_size = ALIGN(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);	144	kernel_size = ALIGN(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);
136	heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);	145	heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);
137		146
138	config.kernel_size = kernel_size + CONFIG_STACK_SIZE;	147	config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
139		148
140	context_save(&ctx);	149	context_save(&ctx);
141	early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);	150	early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);
142	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);	151	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
143	context_restore(&ctx);	152	context_restore(&ctx);
144	/* not reached */	153	/* not reached */
145	}	154	}
146		155
147		156
148	/** Bootstrap CPU main kernel routine stack wrapper	157	/** Bootstrap CPU main kernel routine stack wrapper
149	*	158	*
150	* Second part of main_bsp().	159	* Second part of main_bsp().
151	*	160	*
152	*/	161	*/
153	void main_bsp_separated_stack(void)	162	void main_bsp_separated_stack(void)
154	{	163	{
155	vm_t *m;	164	vm_t *m;
156	task_t *k;	165	task_t *k;
157	thread_t *t;	166	thread_t *t;
158		167
159	the_initialize(THE);	168	the_initialize(THE);
160		169
161	/*	170	/*
162	* kconsole data structures must be initialized very early	171	* kconsole data structures must be initialized very early
163	* because other subsystems will register their respective	172	* because other subsystems will register their respective
164	* commands.	173	* commands.
165	*/	174	*/
166	kconsole_init();	175	kconsole_init();
167		176
168	arch_pre_mm_init();	177	arch_pre_mm_init();
169	early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);	178	early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);
170	frame_init();	179	frame_init();
171	page_init();	180	page_init();
172	tlb_init();	181	tlb_init();
173	arch_post_mm_init();	182	arch_post_mm_init();
174		183
175	printf("%s, release %s%s%s\n%s\n", project, release, rr_delimiter, revision, copyright);	184	printf("%s, release %s (%s)%s\nBuild%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
176	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",	185	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
177	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);	186	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
178		187
179	arch_pre_smp_init();	188	arch_pre_smp_init();
180	smp_init();	189	smp_init();
181	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));	190	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
182	printf("config.cpu_count=%d\n", config.cpu_count);	191	printf("config.cpu_count=%d\n", config.cpu_count);
183		192
184	cpu_init();	193	cpu_init();
185		194
186	calibrate_delay_loop();	195	calibrate_delay_loop();
187		196
188	timeout_init();	197	timeout_init();
189	scheduler_init();	198	scheduler_init();
190	task_init();	199	task_init();
191	thread_init();	200	thread_init();
192		201
193	/*	202	/*
194	* Create kernel vm mapping.	203	* Create kernel vm mapping.
195	*/	204	*/
196	m = vm_create(GET_PTL0_ADDRESS());	205	m = vm_create(GET_PTL0_ADDRESS());
197	if (!m)	206	if (!m)
198	panic("can't create kernel vm address space\n");	207	panic("can't create kernel vm address space\n");
199		208
200	/*	209	/*
201	* Create kernel task.	210	* Create kernel task.
202	*/	211	*/
203	k = task_create(m);	212	k = task_create(m);
204	if (!k)	213	if (!k)
205	panic("can't create kernel task\n");	214	panic("can't create kernel task\n");
206		215
207	/*	216	/*
208	* Create the first thread.	217	* Create the first thread.
209	*/	218	*/
210	t = thread_create(kinit, NULL, k, 0);	219	t = thread_create(kinit, NULL, k, 0);
211	if (!t)	220	if (!t)
212	panic("can't create kinit thread\n");	221	panic("can't create kinit thread\n");
213	thread_ready(t);	222	thread_ready(t);
214	/*	223	/*
215	* This call to scheduler() will return to kinit,	224	* This call to scheduler() will return to kinit,
216	* starting the thread of kernel threads.	225	* starting the thread of kernel threads.
217	*/	226	*/
218	scheduler();	227	scheduler();
219	/* not reached */	228	/* not reached */
220	}	229	}
221		230
222		231
223	#ifdef CONFIG_SMP	232	#ifdef CONFIG_SMP
224	/** Application CPUs main kernel routine	233	/** Application CPUs main kernel routine
225	*	234	*
226	* Executed by application processors, temporary stack	235	* Executed by application processors, temporary stack
227	* is at ctx.sp which was set during BP boot.	236	* is at ctx.sp which was set during BP boot.
228	*	237	*
229	* Assuming interrupts_disable()'d.	238	* Assuming interrupts_disable()'d.
230	*	239	*
231	*/	240	*/
232	void main_ap(void)	241	void main_ap(void)
233	{	242	{
234	/*	243	/*
235	* Incrementing the active CPU counter will guarantee that the	244	* Incrementing the active CPU counter will guarantee that the
236	* pm_init() will not attempt to build GDT and IDT tables again.	245	* pm_init() will not attempt to build GDT and IDT tables again.
237	* Neither frame_init() will do the complete thing. Neither cpu_init()	246	* Neither frame_init() will do the complete thing. Neither cpu_init()
238	* will do.	247	* will do.
239	*/	248	*/
240	config.cpu_active++;	249	config.cpu_active++;
241		250
242	/*	251	/*
243	* The THE structure is well defined because ctx.sp is used as stack.	252	* The THE structure is well defined because ctx.sp is used as stack.
244	*/	253	*/
245	the_initialize(THE);	254	the_initialize(THE);
246		255
247	arch_pre_mm_init();	256	arch_pre_mm_init();
248	frame_init();	257	frame_init();
249	page_init();	258	page_init();
250	tlb_init();	259	tlb_init();
251	arch_post_mm_init();	260	arch_post_mm_init();
252		261
253	cpu_init();	262	cpu_init();
254		263
255	calibrate_delay_loop();	264	calibrate_delay_loop();
256		265
257	l_apic_init();	266	l_apic_init();
258	l_apic_debug();	267	l_apic_debug();
259		268
260	the_copy(THE, (the_t *) CPU->stack);	269	the_copy(THE, (the_t *) CPU->stack);
261		270
262	/*	271	/*
263	* If we woke kmp up before we left the kernel stack, we could	272	* If we woke kmp up before we left the kernel stack, we could
264	* collide with another CPU coming up. To prevent this, we	273	* collide with another CPU coming up. To prevent this, we
265	* switch to this cpu's private stack prior to waking kmp up.	274	* switch to this cpu's private stack prior to waking kmp up.
266	*/	275	*/
267	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);	276	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
268	context_restore(&CPU->saved_context);	277	context_restore(&CPU->saved_context);
269	/* not reached */	278	/* not reached */
270	}	279	}
271		280
272		281
273	/** Application CPUs main kernel routine stack wrapper	282	/** Application CPUs main kernel routine stack wrapper
274	*	283	*
275	* Second part of main_ap().	284	* Second part of main_ap().
276	*	285	*
277	*/	286	*/
278	void main_ap_separated_stack(void)	287	void main_ap_separated_stack(void)
279	{	288	{
280	/*	289	/*
281	* Configure timeouts for this cpu.	290	* Configure timeouts for this cpu.
282	*/	291	*/
283	timeout_init();	292	timeout_init();
284		293
285	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	294	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
286	scheduler();	295	scheduler();
287	/* not reached */	296	/* not reached */
288	}	297	}
289	#endif /* CONFIG_SMP */	298	#endif /* CONFIG_SMP */
290		299

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(root)/kernel/trunk/generic/src/main/main.c – Rev 534 → 561