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 <arch/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 <mm/frame.h>
#include <mm/page.h>
#include <mm/tlb.h>
#include <synch/waitq.h>
 
#include <arch.h>
 
char *project = "SPARTAN kernel";
char *copyright = "Copyright (C) 2001-2005 Jakub Jermar, Copyright (C) 2005 HelenOS project";
 
config_t config;
context_t ctx;
 
/*
 * These 'hardcoded' variables will be intialised by
 * the linker with appropriate sizes and addresses.
 */
__address hardcoded_load_address = 0;
__u32 hardcoded_ktext_size = 0;
__u32 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);
 
/*
 * Executed by the bootstrap processor. cpu_priority_high()'d
 */
void main_bsp(void)
{
    config.cpu_count = 1;
    config.cpu_active = 1;
 
    config.base = hardcoded_load_address;
    config.memory_size = CONFIG_MEMORY_SIZE;
    config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;
 
    context_save(&ctx);
    ctx.sp = config.base + config.kernel_size - 8;
    ctx.pc = (__address) main_bsp_separated_stack;
    context_restore(&ctx);
    /* not reached */
}
 
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("%L: 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__
/*
 * Executed by application processors. cpu_priority_high()'d
 * Temporary stack is at ctx.sp which was set during BP boot.
 */
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.
     */
    CPU->saved_context.sp = (__address) &CPU->stack[CPU_STACK_SIZE-8];
    CPU->saved_context.pc = (__address) main_ap_separated_stack;
    context_restore(&CPU->saved_context);
    /* not reached */
}
 
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 68	Rev 71
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 <arch/context.h>	30	#include <arch/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 <mm/frame.h>	50	#include <mm/frame.h>
51	#include <mm/page.h>	51	#include <mm/page.h>
52	#include <mm/tlb.h>	52	#include <mm/tlb.h>
53	#include <synch/waitq.h>	53	#include <synch/waitq.h>
54		54
55	#include <arch.h>	55	#include <arch.h>
56		56
57	char *project = "SPARTAN kernel";	57	char *project = "SPARTAN kernel";
58	char *copyright = "Copyright (C) 2001-2005 Jakub Jermar";	58	char *copyright = "Copyright (C) 2001-2005 Jakub Jermar, Copyright (C) 2005 HelenOS project";
59		59
60	config_t config;	60	config_t config;
61	context_t ctx;	61	context_t ctx;
62		62
63	/*	63	/*
64	* These 'hardcoded' variables will be intialised by	64	* These 'hardcoded' variables will be intialised by
65	* the linker with appropriate sizes and addresses.	65	* the linker with appropriate sizes and addresses.
66	*/	66	*/
67	__address hardcoded_load_address = 0;	67	__address hardcoded_load_address = 0;
68	__u32 hardcoded_ktext_size = 0;	68	__u32 hardcoded_ktext_size = 0;
69	__u32 hardcoded_kdata_size = 0;	69	__u32 hardcoded_kdata_size = 0;
70		70
71	void main_bsp(void);	71	void main_bsp(void);
72	void main_ap(void);	72	void main_ap(void);
73		73
74	/*	74	/*
75	* These two functions prevent stack from underflowing during the	75	* These two functions prevent stack from underflowing during the
76	* kernel boot phase when SP is set to the very top of the reserved	76	* kernel boot phase when SP is set to the very top of the reserved
77	* space. The stack could get corrupted by a fooled compiler-generated	77	* space. The stack could get corrupted by a fooled compiler-generated
78	* pop sequence otherwise.	78	* pop sequence otherwise.
79	*/	79	*/
80	static void main_bsp_separated_stack(void);	80	static void main_bsp_separated_stack(void);
81	static void main_ap_separated_stack(void);	81	static void main_ap_separated_stack(void);
82		82
83	/*	83	/*
84	* Executed by the bootstrap processor. cpu_priority_high()'d	84	* Executed by the bootstrap processor. cpu_priority_high()'d
85	*/	85	*/
86	void main_bsp(void)	86	void main_bsp(void)
87	{	87	{
88	config.cpu_count = 1;	88	config.cpu_count = 1;
89	config.cpu_active = 1;	89	config.cpu_active = 1;
90		90
91	config.base = hardcoded_load_address;	91	config.base = hardcoded_load_address;
92	config.memory_size = CONFIG_MEMORY_SIZE;	92	config.memory_size = CONFIG_MEMORY_SIZE;
93	config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;	93	config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;
94		94
95	context_save(&ctx);	95	context_save(&ctx);
96	ctx.sp = config.base + config.kernel_size - 8;	96	ctx.sp = config.base + config.kernel_size - 8;
97	ctx.pc = (__address) main_bsp_separated_stack;	97	ctx.pc = (__address) main_bsp_separated_stack;
98	context_restore(&ctx);	98	context_restore(&ctx);
99	/* not reached */	99	/* not reached */
100	}	100	}
101		101
102	void main_bsp_separated_stack(void) {	102	void main_bsp_separated_stack(void) {
103	vm_t *m;	103	vm_t *m;
104	task_t *k;	104	task_t *k;
105	thread_t *t;	105	thread_t *t;
106		106
107	arch_pre_mm_init();	107	arch_pre_mm_init();
108		108
109	heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);	109	heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);
110	frame_init();	110	frame_init();
111	page_init();	111	page_init();
112	tlb_init();	112	tlb_init();
113		113
114	arch_post_mm_init();	114	arch_post_mm_init();
115		115
116	printf("%s, %s\n", project, copyright);	116	printf("%s\n%s\n", project, copyright);
117		117
118	printf("%L: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",	118	printf("%L: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
119	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);	119	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
120		120
121	arch_late_init();	121	arch_late_init();
122		122
123	smp_init();	123	smp_init();
124	printf("config.cpu_count=%d\n", config.cpu_count);	124	printf("config.cpu_count=%d\n", config.cpu_count);
125		125
126	cpu_init();	126	cpu_init();
127	calibrate_delay_loop();	127	calibrate_delay_loop();
128		128
129	timeout_init();	129	timeout_init();
130	scheduler_init();	130	scheduler_init();
131	task_init();	131	task_init();
132	thread_init();	132	thread_init();
133		133
134	/*	134	/*
135	* Create kernel vm mapping.	135	* Create kernel vm mapping.
136	*/	136	*/
137	m = vm_create();	137	m = vm_create();
138	if (!m) panic("can't create kernel vm address space\n");	138	if (!m) panic("can't create kernel vm address space\n");
139		139
140	/*	140	/*
141	* Create kernel task.	141	* Create kernel task.
142	*/	142	*/
143	k = task_create(m);	143	k = task_create(m);
144	if (!k) panic("can't create kernel task\n");	144	if (!k) panic("can't create kernel task\n");
145		145
146	/*	146	/*
147	* Create the first thread.	147	* Create the first thread.
148	*/	148	*/
149	t = thread_create(kinit, NULL, k, 0);	149	t = thread_create(kinit, NULL, k, 0);
150	if (!t) panic("can't create kinit thread\n");	150	if (!t) panic("can't create kinit thread\n");
151		151
152	thread_ready(t);	152	thread_ready(t);
153		153
154	/*	154	/*
155	* This call to scheduler() will return to kinit,	155	* This call to scheduler() will return to kinit,
156	* starting the thread of kernel threads.	156	* starting the thread of kernel threads.
157	*/	157	*/
158	scheduler();	158	scheduler();
159	/* not reached */	159	/* not reached */
160	}	160	}
161		161
162	#ifdef __SMP__	162	#ifdef __SMP__
163	/*	163	/*
164	* Executed by application processors. cpu_priority_high()'d	164	* Executed by application processors. cpu_priority_high()'d
165	* Temporary stack is at ctx.sp which was set during BP boot.	165	* Temporary stack is at ctx.sp which was set during BP boot.
166	*/	166	*/
167	void main_ap(void)	167	void main_ap(void)
168	{	168	{
169	/*	169	/*
170	* Incrementing the active CPU counter will guarantee that the	170	* Incrementing the active CPU counter will guarantee that the
171	* pm_init() will not attempt to build GDT and IDT tables again.	171	* pm_init() will not attempt to build GDT and IDT tables again.
172	* Neither frame_init() will do the complete thing. Neither cpu_init()	172	* Neither frame_init() will do the complete thing. Neither cpu_init()
173	* will do.	173	* will do.
174	*/	174	*/
175	config.cpu_active++;	175	config.cpu_active++;
176		176
177	arch_pre_mm_init();	177	arch_pre_mm_init();
178	frame_init();	178	frame_init();
179	page_init();	179	page_init();
180	arch_post_mm_init();	180	arch_post_mm_init();
181		181
182	cpu_init();	182	cpu_init();
183	calibrate_delay_loop();	183	calibrate_delay_loop();
184		184
185	l_apic_init();	185	l_apic_init();
186	l_apic_debug();	186	l_apic_debug();
187		187
188		188
189	/*	189	/*
190	* If we woke kmp up before we left the kernel stack, we could	190	* If we woke kmp up before we left the kernel stack, we could
191	* collide with another CPU coming up. To prevent this, we	191	* collide with another CPU coming up. To prevent this, we
192	* switch to this cpu's private stack prior to waking kmp up.	192	* switch to this cpu's private stack prior to waking kmp up.
193	*/	193	*/
194	CPU->saved_context.sp = (__address) &CPU->stack[CPU_STACK_SIZE-8];	194	CPU->saved_context.sp = (__address) &CPU->stack[CPU_STACK_SIZE-8];
195	CPU->saved_context.pc = (__address) main_ap_separated_stack;	195	CPU->saved_context.pc = (__address) main_ap_separated_stack;
196	context_restore(&CPU->saved_context);	196	context_restore(&CPU->saved_context);
197	/* not reached */	197	/* not reached */
198	}	198	}
199		199
200	void main_ap_separated_stack(void)	200	void main_ap_separated_stack(void)
201	{	201	{
202	/*	202	/*
203	* Configure timeouts for this cpu.	203	* Configure timeouts for this cpu.
204	*/	204	*/
205	timeout_init();	205	timeout_init();
206		206
207	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	207	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
208	scheduler();	208	scheduler();
209	/* not reached */	209	/* not reached */
210	}	210	}
211	#endif /* __SMP__*/	211	#endif /* __SMP__*/
212		212

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/main/main.c @ 1742 – Rev 68 → 71