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>
#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);
#ifdef CONFIG_SMP
static void main_ap_separated_stack(void);
#endif
 
/** 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();
    config.init_addr = init_addr;
    config.init_size = init_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();
   
    if (config.init_size > 0)
        printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size);
 
    /*
     * 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 625	Rev 628
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 = 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	#ifdef CONFIG_SMP	128	#ifdef CONFIG_SMP
129	static void main_ap_separated_stack(void);	129	static void main_ap_separated_stack(void);
130	#endif	130	#endif
131		131
132	/** Bootstrap CPU main kernel routine	132	/** Bootstrap CPU main kernel routine
133	*	133	*
134	* Initializes the kernel by bootstrap CPU.	134	* Initializes the kernel by bootstrap CPU.
135	*	135	*
136	* Assuming interrupts_disable().	136	* Assuming interrupts_disable().
137	*	137	*
138	*/	138	*/
139	void main_bsp(void)	139	void main_bsp(void)
140	{	140	{
141	config.cpu_count = 1;	141	config.cpu_count = 1;
142	config.cpu_active = 1;	142	config.cpu_active = 1;
143	config.base = hardcoded_load_address;	143	config.base = hardcoded_load_address;
144	config.memory_size = get_memory_size();	144	config.memory_size = get_memory_size();
-		145	config.init_addr = init_addr;
-		146	config.init_size = init_size;
145		147
146	heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);	148	heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);
147	kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);	149	kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);
148	heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);	150	heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);
149		151
150	config.kernel_size = kernel_size + CONFIG_STACK_SIZE;	152	config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
151		153
152	context_save(&ctx);	154	context_save(&ctx);
153	early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);	155	early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);
154	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);	156	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
155	context_restore(&ctx);	157	context_restore(&ctx);
156	/* not reached */	158	/* not reached */
157	}	159	}
158		160
159		161
160	/** Bootstrap CPU main kernel routine stack wrapper	162	/** Bootstrap CPU main kernel routine stack wrapper
161	*	163	*
162	* Second part of main_bsp().	164	* Second part of main_bsp().
163	*	165	*
164	*/	166	*/
165	void main_bsp_separated_stack(void)	167	void main_bsp_separated_stack(void)
166	{	168	{
167	vm_t *m;	169	vm_t *m;
168	task_t *k;	170	task_t *k;
169	thread_t *t;	171	thread_t *t;
170		172
171	the_initialize(THE);	173	the_initialize(THE);
172		174
173	/*	175	/*
174	* kconsole data structures must be initialized very early	176	* kconsole data structures must be initialized very early
175	* because other subsystems will register their respective	177	* because other subsystems will register their respective
176	* commands.	178	* commands.
177	*/	179	*/
178	kconsole_init();	180	kconsole_init();
179		181
180	/* Exception handler initialization, before architecture	182	/* Exception handler initialization, before architecture
181	* starts adding it's own handlers	183	* starts adding it's own handlers
182	*/	184	*/
183	exc_init();	185	exc_init();
184		186
185	arch_pre_mm_init();	187	arch_pre_mm_init();
186	early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);	188	early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);
187	frame_init();	189	frame_init();
188	page_init();	190	page_init();
189	tlb_init();	191	tlb_init();
190	arch_post_mm_init();	192	arch_post_mm_init();
191		193
192	printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);	194	printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
193	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",	195	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
194	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);	196	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
195		197
196	arch_pre_smp_init();	198	arch_pre_smp_init();
197	smp_init();	199	smp_init();
198	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));	200	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
199	printf("config.cpu_count=%d\n", config.cpu_count);	201	printf("config.cpu_count=%d\n", config.cpu_count);
200		202
201	cpu_init();	203	cpu_init();
202		204
203	calibrate_delay_loop();	205	calibrate_delay_loop();
204		206
205	timeout_init();	207	timeout_init();
206	scheduler_init();	208	scheduler_init();
207	task_init();	209	task_init();
208	thread_init();	210	thread_init();
-		211
-		212	if (config.init_size > 0)
-		213	printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size);
209		214
210	/*	215	/*
211	* Create kernel vm mapping.	216	* Create kernel vm mapping.
212	*/	217	*/
213	m = vm_create(GET_PTL0_ADDRESS());	218	m = vm_create(GET_PTL0_ADDRESS());
214	if (!m)	219	if (!m)
215	panic("can't create kernel vm address space\n");	220	panic("can't create kernel vm address space\n");
216		221
217	/*	222	/*
218	* Create kernel task.	223	* Create kernel task.
219	*/	224	*/
220	k = task_create(m);	225	k = task_create(m);
221	if (!k)	226	if (!k)
222	panic("can't create kernel task\n");	227	panic("can't create kernel task\n");
223		228
224	/*	229	/*
225	* Create the first thread.	230	* Create the first thread.
226	*/	231	*/
227	t = thread_create(kinit, NULL, k, 0);	232	t = thread_create(kinit, NULL, k, 0);
228	if (!t)	233	if (!t)
229	panic("can't create kinit thread\n");	234	panic("can't create kinit thread\n");
230	thread_ready(t);	235	thread_ready(t);
231	/*	236	/*
232	* This call to scheduler() will return to kinit,	237	* This call to scheduler() will return to kinit,
233	* starting the thread of kernel threads.	238	* starting the thread of kernel threads.
234	*/	239	*/
235	scheduler();	240	scheduler();
236	/* not reached */	241	/* not reached */
237	}	242	}
238		243
239		244
240	#ifdef CONFIG_SMP	245	#ifdef CONFIG_SMP
241	/** Application CPUs main kernel routine	246	/** Application CPUs main kernel routine
242	*	247	*
243	* Executed by application processors, temporary stack	248	* Executed by application processors, temporary stack
244	* is at ctx.sp which was set during BP boot.	249	* is at ctx.sp which was set during BP boot.
245	*	250	*
246	* Assuming interrupts_disable()'d.	251	* Assuming interrupts_disable()'d.
247	*	252	*
248	*/	253	*/
249	void main_ap(void)	254	void main_ap(void)
250	{	255	{
251	/*	256	/*
252	* Incrementing the active CPU counter will guarantee that the	257	* Incrementing the active CPU counter will guarantee that the
253	* pm_init() will not attempt to build GDT and IDT tables again.	258	* pm_init() will not attempt to build GDT and IDT tables again.
254	* Neither frame_init() will do the complete thing. Neither cpu_init()	259	* Neither frame_init() will do the complete thing. Neither cpu_init()
255	* will do.	260	* will do.
256	*/	261	*/
257	config.cpu_active++;	262	config.cpu_active++;
258		263
259	/*	264	/*
260	* The THE structure is well defined because ctx.sp is used as stack.	265	* The THE structure is well defined because ctx.sp is used as stack.
261	*/	266	*/
262	the_initialize(THE);	267	the_initialize(THE);
263		268
264	arch_pre_mm_init();	269	arch_pre_mm_init();
265	frame_init();	270	frame_init();
266	page_init();	271	page_init();
267	tlb_init();	272	tlb_init();
268	arch_post_mm_init();	273	arch_post_mm_init();
269		274
270	cpu_init();	275	cpu_init();
271		276
272	calibrate_delay_loop();	277	calibrate_delay_loop();
273		278
274	l_apic_init();	279	l_apic_init();
275	l_apic_debug();	280	l_apic_debug();
276		281
277	the_copy(THE, (the_t *) CPU->stack);	282	the_copy(THE, (the_t *) CPU->stack);
278		283
279	/*	284	/*
280	* If we woke kmp up before we left the kernel stack, we could	285	* If we woke kmp up before we left the kernel stack, we could
281	* collide with another CPU coming up. To prevent this, we	286	* collide with another CPU coming up. To prevent this, we
282	* switch to this cpu's private stack prior to waking kmp up.	287	* switch to this cpu's private stack prior to waking kmp up.
283	*/	288	*/
284	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);	289	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
285	context_restore(&CPU->saved_context);	290	context_restore(&CPU->saved_context);
286	/* not reached */	291	/* not reached */
287	}	292	}
288		293
289		294
290	/** Application CPUs main kernel routine stack wrapper	295	/** Application CPUs main kernel routine stack wrapper
291	*	296	*
292	* Second part of main_ap().	297	* Second part of main_ap().
293	*	298	*
294	*/	299	*/
295	void main_ap_separated_stack(void)	300	void main_ap_separated_stack(void)
296	{	301	{
297	/*	302	/*
298	* Configure timeouts for this cpu.	303	* Configure timeouts for this cpu.
299	*/	304	*/
300	timeout_init();	305	timeout_init();
301		306
302	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	307	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
303	scheduler();	308	scheduler();
304	/* not reached */	309	/* not reached */
305	}	310	}
306	#endif /* CONFIG_SMP */	311	#endif /* CONFIG_SMP */
307		312

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(root)/kernel/trunk/generic/src/main/main.c @ 1780 – Rev 625 → 628