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) 2001-2006 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;
 
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;
   
    if (init_size > 0)
        config.heap_addr = init_addr + init_size;
    else
        config.heap_addr = hardcoded_load_address + hardcoded_ktext_size + hardcoded_kdata_size;
   
    config.heap_size = CONFIG_HEAP_SIZE + (config.memory_size / FRAME_SIZE) * sizeof(frame_t);
   
    config.kernel_size = ALIGN_UP(config.heap_addr - hardcoded_load_address + config.heap_size, PAGE_SIZE);
    config.heap_delta = config.kernel_size - (config.heap_addr - hardcoded_load_address + config.heap_size);
    config.kernel_size = config.kernel_size + CONFIG_STACK_SIZE;
   
    context_save(&ctx);
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + config.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.heap_addr, config.heap_size + config.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 651	Rev 671
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) 2001-2006 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	config_t config;	85	config_t config;
86	context_t ctx;	86	context_t ctx;
87		87
88	/**	88	/**
89	* These 'hardcoded' variables will be intialized by	89	* These 'hardcoded' variables will be intialized by
90	* the linker or the low level assembler code with	90	* the linker or the low level assembler code with
91	* appropriate sizes and addresses.	91	* appropriate sizes and addresses.
92	*/	92	*/
93	__address hardcoded_load_address = 0;	93	__address hardcoded_load_address = 0;
94	size_t hardcoded_ktext_size = 0;	94	size_t hardcoded_ktext_size = 0;
95	size_t hardcoded_kdata_size = 0;	95	size_t hardcoded_kdata_size = 0;
96		96
97	__address init_addr = 0;	97	__address init_addr = 0;
98	size_t init_size = 0;	98	size_t init_size = 0;
99		99
100	void main_bsp(void);	100	void main_bsp(void);
101	void main_ap(void);	101	void main_ap(void);
102		102
103	/*	103	/*
104	* These two functions prevent stack from underflowing during the	104	* These two functions prevent stack from underflowing during the
105	* kernel boot phase when SP is set to the very top of the reserved	105	* kernel boot phase when SP is set to the very top of the reserved
106	* space. The stack could get corrupted by a fooled compiler-generated	106	* space. The stack could get corrupted by a fooled compiler-generated
107	* pop sequence otherwise.	107	* pop sequence otherwise.
108	*/	108	*/
109	static void main_bsp_separated_stack(void);	109	static void main_bsp_separated_stack(void);
110	#ifdef CONFIG_SMP	110	#ifdef CONFIG_SMP
111	static void main_ap_separated_stack(void);	111	static void main_ap_separated_stack(void);
112	#endif	112	#endif
113		113
114	/** Bootstrap CPU main kernel routine	114	/** Bootstrap CPU main kernel routine
115	*	115	*
116	* Initializes the kernel by bootstrap CPU.	116	* Initializes the kernel by bootstrap CPU.
117	*	117	*
118	* Assuming interrupts_disable().	118	* Assuming interrupts_disable().
119	*	119	*
120	*/	120	*/
121	void main_bsp(void)	121	void main_bsp(void)
122	{	122	{
123	config.cpu_count = 1;	123	config.cpu_count = 1;
124	config.cpu_active = 1;	124	config.cpu_active = 1;
125		125
126	config.base = hardcoded_load_address;	126	config.base = hardcoded_load_address;
127	config.memory_size = get_memory_size();	127	config.memory_size = get_memory_size();
128	config.init_addr = init_addr;	128	config.init_addr = init_addr;
129	config.init_size = init_size;	129	config.init_size = init_size;
130		130
131	if (init_size > 0)	131	if (init_size > 0)
132	config.heap_addr = init_addr + init_size;	132	config.heap_addr = init_addr + init_size;
133	else	133	else
134	config.heap_addr = hardcoded_load_address + hardcoded_ktext_size + hardcoded_kdata_size;	134	config.heap_addr = hardcoded_load_address + hardcoded_ktext_size + hardcoded_kdata_size;
135		135
136	config.heap_size = CONFIG_HEAP_SIZE + (config.memory_size / FRAME_SIZE) * sizeof(frame_t);	136	config.heap_size = CONFIG_HEAP_SIZE + (config.memory_size / FRAME_SIZE) * sizeof(frame_t);
137		137
138	config.kernel_size = ALIGN_UP(config.heap_addr - hardcoded_load_address + config.heap_size, PAGE_SIZE);	138	config.kernel_size = ALIGN_UP(config.heap_addr - hardcoded_load_address + config.heap_size, PAGE_SIZE);
139	config.heap_delta = config.kernel_size - (config.heap_addr - hardcoded_load_address + config.heap_size);	139	config.heap_delta = config.kernel_size - (config.heap_addr - hardcoded_load_address + config.heap_size);
140	config.kernel_size = config.kernel_size + CONFIG_STACK_SIZE;	140	config.kernel_size = config.kernel_size + CONFIG_STACK_SIZE;
141		141
142	context_save(&ctx);	142	context_save(&ctx);
143	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + config.kernel_size, CONFIG_STACK_SIZE);	143	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + config.kernel_size, CONFIG_STACK_SIZE);
144	context_restore(&ctx);	144	context_restore(&ctx);
145	/* not reached */	145	/* not reached */
146	}	146	}
147		147
148		148
149	/** Bootstrap CPU main kernel routine stack wrapper	149	/** Bootstrap CPU main kernel routine stack wrapper
150	*	150	*
151	* Second part of main_bsp().	151	* Second part of main_bsp().
152	*	152	*
153	*/	153	*/
154	void main_bsp_separated_stack(void)	154	void main_bsp_separated_stack(void)
155	{	155	{
156	vm_t *m;	156	vm_t *m;
157	task_t *k;	157	task_t *k;
158	thread_t *t;	158	thread_t *t;
159		159
160	the_initialize(THE);	160	the_initialize(THE);
161		161
162	/*	162	/*
163	* kconsole data structures must be initialized very early	163	* kconsole data structures must be initialized very early
164	* because other subsystems will register their respective	164	* because other subsystems will register their respective
165	* commands.	165	* commands.
166	*/	166	*/
167	kconsole_init();	167	kconsole_init();
168		168
169	/* Exception handler initialization, before architecture	169	/* Exception handler initialization, before architecture
170	* starts adding it's own handlers	170	* starts adding it's own handlers
171	*/	171	*/
172	exc_init();	172	exc_init();
173		173
174	arch_pre_mm_init();	174	arch_pre_mm_init();
175	early_heap_init(config.heap_addr, config.heap_size + config.heap_delta);	175	early_heap_init(config.heap_addr, config.heap_size + config.heap_delta);
176	frame_init();	176	frame_init();
177	page_init();	177	page_init();
178	tlb_init();	178	tlb_init();
179	arch_post_mm_init();	179	arch_post_mm_init();
180		180
181	printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);	181	printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
182	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",	182	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
183	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);	183	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
184		184
185	arch_pre_smp_init();	185	arch_pre_smp_init();
186	smp_init();	186	smp_init();
187	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));	187	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
188	printf("config.cpu_count=%d\n", config.cpu_count);	188	printf("config.cpu_count=%d\n", config.cpu_count);
189		189
190	cpu_init();	190	cpu_init();
191		191
192	calibrate_delay_loop();	192	calibrate_delay_loop();
193		193
194	timeout_init();	194	timeout_init();
195	scheduler_init();	195	scheduler_init();
196	task_init();	196	task_init();
197	thread_init();	197	thread_init();
198		198
199	if (config.init_size > 0)	199	if (config.init_size > 0)
200	printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size);	200	printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size);
201		201
202	/*	202	/*
203	* Create kernel vm mapping.	203	* Create kernel vm mapping.
204	*/	204	*/
205	m = vm_create(GET_PTL0_ADDRESS());	205	m = vm_create(GET_PTL0_ADDRESS());
206	if (!m)	206	if (!m)
207	panic("can't create kernel vm address space\n");	207	panic("can't create kernel vm address space\n");
208		208
209	/*	209	/*
210	* Create kernel task.	210	* Create kernel task.
211	*/	211	*/
212	k = task_create(m);	212	k = task_create(m);
213	if (!k)	213	if (!k)
214	panic("can't create kernel task\n");	214	panic("can't create kernel task\n");
215		215
216	/*	216	/*
217	* Create the first thread.	217	* Create the first thread.
218	*/	218	*/
219	t = thread_create(kinit, NULL, k, 0);	219	t = thread_create(kinit, NULL, k, 0);
220	if (!t)	220	if (!t)
221	panic("can't create kinit thread\n");	221	panic("can't create kinit thread\n");
222	thread_ready(t);	222	thread_ready(t);
223	/*	223	/*
224	* This call to scheduler() will return to kinit,	224	* This call to scheduler() will return to kinit,
225	* starting the thread of kernel threads.	225	* starting the thread of kernel threads.
226	*/	226	*/
227	scheduler();	227	scheduler();
228	/* not reached */	228	/* not reached */
229	}	229	}
230		230
231		231
232	#ifdef CONFIG_SMP	232	#ifdef CONFIG_SMP
233	/** Application CPUs main kernel routine	233	/** Application CPUs main kernel routine
234	*	234	*
235	* Executed by application processors, temporary stack	235	* Executed by application processors, temporary stack
236	* is at ctx.sp which was set during BP boot.	236	* is at ctx.sp which was set during BP boot.
237	*	237	*
238	* Assuming interrupts_disable()'d.	238	* Assuming interrupts_disable()'d.
239	*	239	*
240	*/	240	*/
241	void main_ap(void)	241	void main_ap(void)
242	{	242	{
243	/*	243	/*
244	* Incrementing the active CPU counter will guarantee that the	244	* Incrementing the active CPU counter will guarantee that the
245	* 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.
246	* Neither frame_init() will do the complete thing. Neither cpu_init()	246	* Neither frame_init() will do the complete thing. Neither cpu_init()
247	* will do.	247	* will do.
248	*/	248	*/
249	config.cpu_active++;	249	config.cpu_active++;
250		250
251	/*	251	/*
252	* 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.
253	*/	253	*/
254	the_initialize(THE);	254	the_initialize(THE);
255		255
256	arch_pre_mm_init();	256	arch_pre_mm_init();
257	frame_init();	257	frame_init();
258	page_init();	258	page_init();
259	tlb_init();	259	tlb_init();
260	arch_post_mm_init();	260	arch_post_mm_init();
261		261
262	cpu_init();	262	cpu_init();
263		263
264	calibrate_delay_loop();	264	calibrate_delay_loop();
265		265
266	l_apic_init();	266	l_apic_init();
267	l_apic_debug();	267	l_apic_debug();
268		268
269	the_copy(THE, (the_t *) CPU->stack);	269	the_copy(THE, (the_t *) CPU->stack);
270		270
271	/*	271	/*
272	* 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
273	* collide with another CPU coming up. To prevent this, we	273	* collide with another CPU coming up. To prevent this, we
274	* 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.
275	*/	275	*/
276	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);
277	context_restore(&CPU->saved_context);	277	context_restore(&CPU->saved_context);
278	/* not reached */	278	/* not reached */
279	}	279	}
280		280
281		281
282	/** Application CPUs main kernel routine stack wrapper	282	/** Application CPUs main kernel routine stack wrapper
283	*	283	*
284	* Second part of main_ap().	284	* Second part of main_ap().
285	*	285	*
286	*/	286	*/
287	void main_ap_separated_stack(void)	287	void main_ap_separated_stack(void)
288	{	288	{
289	/*	289	/*
290	* Configure timeouts for this cpu.	290	* Configure timeouts for this cpu.
291	*/	291	*/
292	timeout_init();	292	timeout_init();
293		293
294	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	294	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
295	scheduler();	295	scheduler();
296	/* not reached */	296	/* not reached */
297	}	297	}
298	#endif /* CONFIG_SMP */	298	#endif /* CONFIG_SMP */
299		299

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(root)/kernel/trunk/generic/src/main/main.c – Rev 651 → 671