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 <config.h>
#include <time/clock.h>
#include <proc/scheduler.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <mm/vm.h>
#include <main/kinit.h>
#include <cpu.h>
#include <mm/heap.h>
 
#ifdef __SMP__
#include <arch/smp/apic.h>
#include <arch/smp/mps.h>
#endif /* __SMP__ */
 
#include <smp/smp.h>
 
#include <arch/mm/memory_init.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <mm/tlb.h>
#include <synch/waitq.h>
 
#include <arch.h>
#include <arch/faddr.h>
 
#include <typedefs.h>
 
char *project = "SPARTAN kernel";
char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project";
 
config_t config;
context_t ctx;
 
/*
 * These 'hardcoded' variables will be intialised by
 * the linker or the low level assembler code with
 * appropriate sizes and addresses.
 */
__address hardcoded_load_address = 0;
size_t hardcoded_ktext_size = 0;
size_t hardcoded_kdata_size = 0;
 
void main_bsp(void);
void main_ap(void);
 
/*
 * These two functions prevent stack from underflowing during the
 * kernel boot phase when SP is set to the very top of the reserved
 * space. The stack could get corrupted by a fooled compiler-generated
 * pop sequence otherwise.
 */
static void main_bsp_separated_stack(void);
static void main_ap_separated_stack(void);
 
 
/** Bootstrap CPU main kernel routine
 *
 * Initializes the kernel by bootstrap CPU.
 *
 * Assuming cpu_priority_high().
 *
 */
void main_bsp(void)
{
    config.cpu_count = 1;
    config.cpu_active = 1;
 
    config.base = hardcoded_load_address;
    config.memory_size = get_memory_size();
    config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;
 
    context_save(&ctx);
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_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;
 
    arch_pre_mm_init();
 
    heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);
    frame_init();
    page_init();
    tlb_init();
 
    arch_post_mm_init();
 
    printf("%s\n%s\n", project, copyright);
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
 
    arch_late_init();
   
    smp_init();
    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();
    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 __SMP__
/** Application CPUs main kernel routine
 *
 * Executed by application processors, temporary stack
 * is at ctx.sp which was set during BP boot.
 *
 * Assuming  cpu_priority_high().
 *
 */
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++;
 
    arch_pre_mm_init();
    frame_init();
    page_init();
    arch_post_mm_init();
 
    cpu_init();
    calibrate_delay_loop();
 
    l_apic_init();
    l_apic_debug();
 
 
    /*
     * 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), 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 /* __SMP__*/
 

Rev 108	Rev 146
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 <config.h>	33	#include <config.h>
34	#include <time/clock.h>	34	#include <time/clock.h>
35	#include <proc/scheduler.h>	35	#include <proc/scheduler.h>
36	#include <proc/thread.h>	36	#include <proc/thread.h>
37	#include <proc/task.h>	37	#include <proc/task.h>
38	#include <mm/vm.h>	38	#include <mm/vm.h>
39	#include <main/kinit.h>	39	#include <main/kinit.h>
40	#include <cpu.h>	40	#include <cpu.h>
41	#include <mm/heap.h>	41	#include <mm/heap.h>
42		42
43	#ifdef __SMP__	43	#ifdef __SMP__
44	#include <arch/smp/apic.h>	44	#include <arch/smp/apic.h>
45	#include <arch/smp/mps.h>	45	#include <arch/smp/mps.h>
46	#endif /* __SMP__ */	46	#endif /* __SMP__ */
47		47
48	#include <smp/smp.h>	48	#include <smp/smp.h>
49		49
-		50	#include <arch/mm/memory_init.h>
50	#include <mm/frame.h>	51	#include <mm/frame.h>
51	#include <mm/page.h>	52	#include <mm/page.h>
52	#include <mm/tlb.h>	53	#include <mm/tlb.h>
53	#include <synch/waitq.h>	54	#include <synch/waitq.h>
54		55
55	#include <arch.h>	56	#include <arch.h>
56	#include <arch/faddr.h>	57	#include <arch/faddr.h>
57		58
58	#include <typedefs.h>	59	#include <typedefs.h>
59		60
60	char *project = "SPARTAN kernel";	61	char *project = "SPARTAN kernel";
61	char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project";	62	char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project";
62		63
63	config_t config;	64	config_t config;
64	context_t ctx;	65	context_t ctx;
65		66
66	/*	67	/*
67	* These 'hardcoded' variables will be intialised by	68	* These 'hardcoded' variables will be intialised by
68	* the linker or the low level assembler code with	69	* the linker or the low level assembler code with
69	* appropriate sizes and addresses.	70	* appropriate sizes and addresses.
70	*/	71	*/
71	__address hardcoded_load_address = 0;	72	__address hardcoded_load_address = 0;
72	size_t hardcoded_ktext_size = 0;	73	size_t hardcoded_ktext_size = 0;
73	size_t hardcoded_kdata_size = 0;	74	size_t hardcoded_kdata_size = 0;
74		75
75	void main_bsp(void);	76	void main_bsp(void);
76	void main_ap(void);	77	void main_ap(void);
77		78
78	/*	79	/*
79	* These two functions prevent stack from underflowing during the	80	* These two functions prevent stack from underflowing during the
80	* kernel boot phase when SP is set to the very top of the reserved	81	* kernel boot phase when SP is set to the very top of the reserved
81	* space. The stack could get corrupted by a fooled compiler-generated	82	* space. The stack could get corrupted by a fooled compiler-generated
82	* pop sequence otherwise.	83	* pop sequence otherwise.
83	*/	84	*/
84	static void main_bsp_separated_stack(void);	85	static void main_bsp_separated_stack(void);
85	static void main_ap_separated_stack(void);	86	static void main_ap_separated_stack(void);
86		87
87		88
88	/** Bootstrap CPU main kernel routine	89	/** Bootstrap CPU main kernel routine
89	*	90	*
90	* Initializes the kernel by bootstrap CPU.	91	* Initializes the kernel by bootstrap CPU.
91	*	92	*
92	* Assuming cpu_priority_high().	93	* Assuming cpu_priority_high().
93	*	94	*
94	*/	95	*/
95	void main_bsp(void)	96	void main_bsp(void)
96	{	97	{
97	config.cpu_count = 1;	98	config.cpu_count = 1;
98	config.cpu_active = 1;	99	config.cpu_active = 1;
99		100
100	config.base = hardcoded_load_address;	101	config.base = hardcoded_load_address;
101	config.memory_size = CONFIG_MEMORY_SIZE;	102	config.memory_size = get_memory_size();
102	config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;	103	config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;
103		104
104	context_save(&ctx);	105	context_save(&ctx);
105	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE, CONFIG_STACK_SIZE);	106	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE, CONFIG_STACK_SIZE);
106	context_restore(&ctx);	107	context_restore(&ctx);
107	/* not reached */	108	/* not reached */
108	}	109	}
109		110
110		111
111	/** Bootstrap CPU main kernel routine stack wrapper	112	/** Bootstrap CPU main kernel routine stack wrapper
112	*	113	*
113	* Second part of main_bsp().	114	* Second part of main_bsp().
114	*	115	*
115	*/	116	*/
116	void main_bsp_separated_stack(void) {	117	void main_bsp_separated_stack(void) {
117	vm_t *m;	118	vm_t *m;
118	task_t *k;	119	task_t *k;
119	thread_t *t;	120	thread_t *t;
120		121
121	arch_pre_mm_init();	122	arch_pre_mm_init();
122		123
123	heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);	124	heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);
124	frame_init();	125	frame_init();
125	page_init();	126	page_init();
126	tlb_init();	127	tlb_init();
127		128
128	arch_post_mm_init();	129	arch_post_mm_init();
129		130
130	printf("%s\n%s\n", project, copyright);	131	printf("%s\n%s\n", project, copyright);
131	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",	132	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
132	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);	133	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
133		134
134	arch_late_init();	135	arch_late_init();
135		136
136	smp_init();	137	smp_init();
137	printf("config.cpu_count=%d\n", config.cpu_count);	138	printf("config.cpu_count=%d\n", config.cpu_count);
138		139
139	cpu_init();	140	cpu_init();
140	calibrate_delay_loop();	141	calibrate_delay_loop();
141		142
142	timeout_init();	143	timeout_init();
143	scheduler_init();	144	scheduler_init();
144	task_init();	145	task_init();
145	thread_init();	146	thread_init();
146		147
147	/*	148	/*
148	* Create kernel vm mapping.	149	* Create kernel vm mapping.
149	*/	150	*/
150	m = vm_create();	151	m = vm_create();
151	if (!m) panic("can't create kernel vm address space\n");	152	if (!m) panic("can't create kernel vm address space\n");
152		153
153	/*	154	/*
154	* Create kernel task.	155	* Create kernel task.
155	*/	156	*/
156	k = task_create(m);	157	k = task_create(m);
157	if (!k) panic("can't create kernel task\n");	158	if (!k) panic("can't create kernel task\n");
158		159
159	/*	160	/*
160	* Create the first thread.	161	* Create the first thread.
161	*/	162	*/
162	t = thread_create(kinit, NULL, k, 0);	163	t = thread_create(kinit, NULL, k, 0);
163	if (!t) panic("can't create kinit thread\n");	164	if (!t) panic("can't create kinit thread\n");
164		165
165	thread_ready(t);	166	thread_ready(t);
166		167
167	/*	168	/*
168	* This call to scheduler() will return to kinit,	169	* This call to scheduler() will return to kinit,
169	* starting the thread of kernel threads.	170	* starting the thread of kernel threads.
170	*/	171	*/
171	scheduler();	172	scheduler();
172	/* not reached */	173	/* not reached */
173	}	174	}
174		175
175		176
176	#ifdef __SMP__	177	#ifdef __SMP__
177	/** Application CPUs main kernel routine	178	/** Application CPUs main kernel routine
178	*	179	*
179	* Executed by application processors, temporary stack	180	* Executed by application processors, temporary stack
180	* is at ctx.sp which was set during BP boot.	181	* is at ctx.sp which was set during BP boot.
181	*	182	*
182	* Assuming cpu_priority_high().	183	* Assuming cpu_priority_high().
183	*	184	*
184	*/	185	*/
185	void main_ap(void)	186	void main_ap(void)
186	{	187	{
187	/*	188	/*
188	* Incrementing the active CPU counter will guarantee that the	189	* Incrementing the active CPU counter will guarantee that the
189	* pm_init() will not attempt to build GDT and IDT tables again.	190	* pm_init() will not attempt to build GDT and IDT tables again.
190	* Neither frame_init() will do the complete thing. Neither cpu_init()	191	* Neither frame_init() will do the complete thing. Neither cpu_init()
191	* will do.	192	* will do.
192	*/	193	*/
193	config.cpu_active++;	194	config.cpu_active++;
194		195
195	arch_pre_mm_init();	196	arch_pre_mm_init();
196	frame_init();	197	frame_init();
197	page_init();	198	page_init();
198	arch_post_mm_init();	199	arch_post_mm_init();
199		200
200	cpu_init();	201	cpu_init();
201	calibrate_delay_loop();	202	calibrate_delay_loop();
202		203
203	l_apic_init();	204	l_apic_init();
204	l_apic_debug();	205	l_apic_debug();
205		206
206		207
207	/*	208	/*
208	* If we woke kmp up before we left the kernel stack, we could	209	* If we woke kmp up before we left the kernel stack, we could
209	* collide with another CPU coming up. To prevent this, we	210	* collide with another CPU coming up. To prevent this, we
210	* switch to this cpu's private stack prior to waking kmp up.	211	* switch to this cpu's private stack prior to waking kmp up.
211	*/	212	*/
212	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);	213	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);
213	context_restore(&CPU->saved_context);	214	context_restore(&CPU->saved_context);
214	/* not reached */	215	/* not reached */
215	}	216	}
216		217
217		218
218	/** Application CPUs main kernel routine stack wrapper	219	/** Application CPUs main kernel routine stack wrapper
219	*	220	*
220	* Second part of main_ap().	221	* Second part of main_ap().
221	*	222	*
222	*/	223	*/
223	void main_ap_separated_stack(void)	224	void main_ap_separated_stack(void)
224	{	225	{
225	/*	226	/*
226	* Configure timeouts for this cpu.	227	* Configure timeouts for this cpu.
227	*/	228	*/
228	timeout_init();	229	timeout_init();
229		230
230	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	231	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
231	scheduler();	232	scheduler();
232	/* not reached */	233	/* not reached */
233	}	234	}
234	#endif /* __SMP__*/	235	#endif /* __SMP__*/
235		236

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/main/main.c @ 725 – Rev 108 → 146