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.
 */
 
#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>
#include <interrupt.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 = 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_UP(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();
    /* Exception handler initialization, before architecture
     * starts adding it's own handlers
     */
    exc_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\nBuilt%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 578	Rev 621
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 <console/kconsole.h>	40	#include <console/kconsole.h>
41	#include <cpu.h>	41	#include <cpu.h>
42	#include <align.h>	42	#include <align.h>
43	#include <interrupt.h>	43	#include <interrupt.h>
44		44
45	#ifdef CONFIG_SMP	45	#ifdef CONFIG_SMP
46	#include <arch/smp/apic.h>	46	#include <arch/smp/apic.h>
47	#include <arch/smp/mps.h>	47	#include <arch/smp/mps.h>
48	#endif /* CONFIG_SMP */	48	#endif /* CONFIG_SMP */
49		49
50	#include <smp/smp.h>	50	#include <smp/smp.h>
51		51
52	#include <arch/mm/memory_init.h>	52	#include <arch/mm/memory_init.h>
53	#include <mm/heap.h>	53	#include <mm/heap.h>
54	#include <mm/frame.h>	54	#include <mm/frame.h>
55	#include <mm/page.h>	55	#include <mm/page.h>
56	#include <mm/tlb.h>	56	#include <mm/tlb.h>
57	#include <mm/vm.h>	57	#include <mm/vm.h>
58		58
59	#include <synch/waitq.h>	59	#include <synch/waitq.h>
60		60
61	#include <arch/arch.h>	61	#include <arch/arch.h>
62	#include <arch.h>	62	#include <arch.h>
63	#include <arch/faddr.h>	63	#include <arch/faddr.h>
64		64
65	#include <typedefs.h>	65	#include <typedefs.h>
66		66
67	char *project = "SPARTAN kernel";	67	char *project = "SPARTAN kernel";
68	char *copyright = "Copyright (C) 2001-2005 HelenOS project";	68	char *copyright = "Copyright (C) 2001-2005 HelenOS project";
69	char *release = RELEASE;	69	char *release = RELEASE;
70	char *name = NAME;	70	char *name = NAME;
71	char *arch = STRING(ARCH);	71	char *arch = ARCH;
72		72
73	#ifdef REVISION	73	#ifdef REVISION
74	char *revision = ", revision " REVISION;	74	char *revision = ", revision " REVISION;
75	#else	75	#else
76	char *revision = "";	76	char *revision = "";
77	#endif	77	#endif
78		78
79	#ifdef TIMESTAMP	79	#ifdef TIMESTAMP
80	char *timestamp = " on " TIMESTAMP;	80	char *timestamp = " on " TIMESTAMP;
81	#else	81	#else
82	char *timestamp = "";	82	char *timestamp = "";
83	#endif	83	#endif
84		84
85		85
86	config_t config;	86	config_t config;
87	context_t ctx;	87	context_t ctx;
88		88
89	/**	89	/**
90	* These 'hardcoded' variables will be intialized by	90	* These 'hardcoded' variables will be intialized by
91	* the linker or the low level assembler code with	91	* the linker or the low level assembler code with
92	* appropriate sizes and addresses.	92	* appropriate sizes and addresses.
93	*/	93	*/
94	__address hardcoded_load_address = 0;	94	__address hardcoded_load_address = 0;
95	size_t hardcoded_ktext_size = 0;	95	size_t hardcoded_ktext_size = 0;
96	size_t hardcoded_kdata_size = 0;	96	size_t hardcoded_kdata_size = 0;
97		97
98	__address init_addr = 0;	98	__address init_addr = 0;
99	size_t init_size = 0;	99	size_t init_size = 0;
100		100
101	/**	101	/**
102	* Size of memory in bytes taken by kernel and heap.	102	* Size of memory in bytes taken by kernel and heap.
103	*/	103	*/
104	static size_t kernel_size;	104	static size_t kernel_size;
105		105
106	/**	106	/**
107	* Size of heap.	107	* Size of heap.
108	*/	108	*/
109	static size_t heap_size;	109	static size_t heap_size;
110		110
111		111
112	/**	112	/**
113	* Extra space between heap and stack	113	* Extra space between heap and stack
114	* enforced by alignment requirements.	114	* enforced by alignment requirements.
115	*/	115	*/
116	static size_t heap_delta;	116	static size_t heap_delta;
117		117
118	void main_bsp(void);	118	void main_bsp(void);
119	void main_ap(void);	119	void main_ap(void);
120		120
121	/*	121	/*
122	* These two functions prevent stack from underflowing during the	122	* These two functions prevent stack from underflowing during the
123	* kernel boot phase when SP is set to the very top of the reserved	123	* kernel boot phase when SP is set to the very top of the reserved
124	* space. The stack could get corrupted by a fooled compiler-generated	124	* space. The stack could get corrupted by a fooled compiler-generated
125	* pop sequence otherwise.	125	* pop sequence otherwise.
126	*/	126	*/
127	static void main_bsp_separated_stack(void);	127	static void main_bsp_separated_stack(void);
128	static void main_ap_separated_stack(void);	128	static void main_ap_separated_stack(void);
129		129
130	/** Bootstrap CPU main kernel routine	130	/** Bootstrap CPU main kernel routine
131	*	131	*
132	* Initializes the kernel by bootstrap CPU.	132	* Initializes the kernel by bootstrap CPU.
133	*	133	*
134	* Assuming interrupts_disable().	134	* Assuming interrupts_disable().
135	*	135	*
136	*/	136	*/
137	void main_bsp(void)	137	void main_bsp(void)
138	{	138	{
139	config.cpu_count = 1;	139	config.cpu_count = 1;
140	config.cpu_active = 1;	140	config.cpu_active = 1;
141	config.base = hardcoded_load_address;	141	config.base = hardcoded_load_address;
142	config.memory_size = get_memory_size();	142	config.memory_size = get_memory_size();
143		143
144	heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);	144	heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);
145	kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);	145	kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);
146	heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);	146	heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);
147		147
148	config.kernel_size = kernel_size + CONFIG_STACK_SIZE;	148	config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
149		149
150	context_save(&ctx);	150	context_save(&ctx);
151	early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);	151	early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);
152	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);	152	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
153	context_restore(&ctx);	153	context_restore(&ctx);
154	/* not reached */	154	/* not reached */
155	}	155	}
156		156
157		157
158	/** Bootstrap CPU main kernel routine stack wrapper	158	/** Bootstrap CPU main kernel routine stack wrapper
159	*	159	*
160	* Second part of main_bsp().	160	* Second part of main_bsp().
161	*	161	*
162	*/	162	*/
163	void main_bsp_separated_stack(void)	163	void main_bsp_separated_stack(void)
164	{	164	{
165	vm_t *m;	165	vm_t *m;
166	task_t *k;	166	task_t *k;
167	thread_t *t;	167	thread_t *t;
168		168
169	the_initialize(THE);	169	the_initialize(THE);
170		170
171	/*	171	/*
172	* kconsole data structures must be initialized very early	172	* kconsole data structures must be initialized very early
173	* because other subsystems will register their respective	173	* because other subsystems will register their respective
174	* commands.	174	* commands.
175	*/	175	*/
176	kconsole_init();	176	kconsole_init();
177	/* Exception handler initialization, before architecture	177	/* Exception handler initialization, before architecture
178	* starts adding it's own handlers	178	* starts adding it's own handlers
179	*/	179	*/
180	exc_init();	180	exc_init();
181		181
182	arch_pre_mm_init();	182	arch_pre_mm_init();
183	early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);	183	early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);
184	frame_init();	184	frame_init();
185	page_init();	185	page_init();
186	tlb_init();	186	tlb_init();
187	arch_post_mm_init();	187	arch_post_mm_init();
188		188
189	printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);	189	printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
190	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",	190	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
191	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);	191	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
192		192
193	arch_pre_smp_init();	193	arch_pre_smp_init();
194	smp_init();	194	smp_init();
195	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));	195	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
196	printf("config.cpu_count=%d\n", config.cpu_count);	196	printf("config.cpu_count=%d\n", config.cpu_count);
197		197
198	cpu_init();	198	cpu_init();
199		199
200	calibrate_delay_loop();	200	calibrate_delay_loop();
201		201
202	timeout_init();	202	timeout_init();
203	scheduler_init();	203	scheduler_init();
204	task_init();	204	task_init();
205	thread_init();	205	thread_init();
206		206
207	/*	207	/*
208	* Create kernel vm mapping.	208	* Create kernel vm mapping.
209	*/	209	*/
210	m = vm_create(GET_PTL0_ADDRESS());	210	m = vm_create(GET_PTL0_ADDRESS());
211	if (!m)	211	if (!m)
212	panic("can't create kernel vm address space\n");	212	panic("can't create kernel vm address space\n");
213		213
214	/*	214	/*
215	* Create kernel task.	215	* Create kernel task.
216	*/	216	*/
217	k = task_create(m);	217	k = task_create(m);
218	if (!k)	218	if (!k)
219	panic("can't create kernel task\n");	219	panic("can't create kernel task\n");
220		220
221	/*	221	/*
222	* Create the first thread.	222	* Create the first thread.
223	*/	223	*/
224	t = thread_create(kinit, NULL, k, 0);	224	t = thread_create(kinit, NULL, k, 0);
225	if (!t)	225	if (!t)
226	panic("can't create kinit thread\n");	226	panic("can't create kinit thread\n");
227	thread_ready(t);	227	thread_ready(t);
228	/*	228	/*
229	* This call to scheduler() will return to kinit,	229	* This call to scheduler() will return to kinit,
230	* starting the thread of kernel threads.	230	* starting the thread of kernel threads.
231	*/	231	*/
232	scheduler();	232	scheduler();
233	/* not reached */	233	/* not reached */
234	}	234	}
235		235
236		236
237	#ifdef CONFIG_SMP	237	#ifdef CONFIG_SMP
238	/** Application CPUs main kernel routine	238	/** Application CPUs main kernel routine
239	*	239	*
240	* Executed by application processors, temporary stack	240	* Executed by application processors, temporary stack
241	* is at ctx.sp which was set during BP boot.	241	* is at ctx.sp which was set during BP boot.
242	*	242	*
243	* Assuming interrupts_disable()'d.	243	* Assuming interrupts_disable()'d.
244	*	244	*
245	*/	245	*/
246	void main_ap(void)	246	void main_ap(void)
247	{	247	{
248	/*	248	/*
249	* Incrementing the active CPU counter will guarantee that the	249	* Incrementing the active CPU counter will guarantee that the
250	* pm_init() will not attempt to build GDT and IDT tables again.	250	* pm_init() will not attempt to build GDT and IDT tables again.
251	* Neither frame_init() will do the complete thing. Neither cpu_init()	251	* Neither frame_init() will do the complete thing. Neither cpu_init()
252	* will do.	252	* will do.
253	*/	253	*/
254	config.cpu_active++;	254	config.cpu_active++;
255		255
256	/*	256	/*
257	* The THE structure is well defined because ctx.sp is used as stack.	257	* The THE structure is well defined because ctx.sp is used as stack.
258	*/	258	*/
259	the_initialize(THE);	259	the_initialize(THE);
260		260
261	arch_pre_mm_init();	261	arch_pre_mm_init();
262	frame_init();	262	frame_init();
263	page_init();	263	page_init();
264	tlb_init();	264	tlb_init();
265	arch_post_mm_init();	265	arch_post_mm_init();
266		266
267	cpu_init();	267	cpu_init();
268		268
269	calibrate_delay_loop();	269	calibrate_delay_loop();
270		270
271	l_apic_init();	271	l_apic_init();
272	l_apic_debug();	272	l_apic_debug();
273		273
274	the_copy(THE, (the_t *) CPU->stack);	274	the_copy(THE, (the_t *) CPU->stack);
275		275
276	/*	276	/*
277	* If we woke kmp up before we left the kernel stack, we could	277	* If we woke kmp up before we left the kernel stack, we could
278	* collide with another CPU coming up. To prevent this, we	278	* collide with another CPU coming up. To prevent this, we
279	* switch to this cpu's private stack prior to waking kmp up.	279	* switch to this cpu's private stack prior to waking kmp up.
280	*/	280	*/
281	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);	281	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
282	context_restore(&CPU->saved_context);	282	context_restore(&CPU->saved_context);
283	/* not reached */	283	/* not reached */
284	}	284	}
285		285
286		286
287	/** Application CPUs main kernel routine stack wrapper	287	/** Application CPUs main kernel routine stack wrapper
288	*	288	*
289	* Second part of main_ap().	289	* Second part of main_ap().
290	*	290	*
291	*/	291	*/
292	void main_ap_separated_stack(void)	292	void main_ap_separated_stack(void)
293	{	293	{
294	/*	294	/*
295	* Configure timeouts for this cpu.	295	* Configure timeouts for this cpu.
296	*/	296	*/
297	timeout_init();	297	timeout_init();
298		298
299	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	299	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
300	scheduler();	300	scheduler();
301	/* not reached */	301	/* not reached */
302	}	302	}
303	#endif /* CONFIG_SMP */	303	#endif /* CONFIG_SMP */
304		304

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(root)/trunk/kernel/generic/src/main/main.c @ 1999 – Rev 578 → 621