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;
    size_t size, delta;
 
    /*
     * Calculate 'size' that kernel and heap occupies in memory.
     */
    size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE;   
     
    /*
     * We need the boot stack to start on page boundary.
     * That is why 'delta' is calculated.
     */
    delta = PAGE_SIZE - ((hardcoded_load_address + size) % PAGE_SIZE);
    delta = (delta == PAGE_SIZE) ? 0 : delta;
   
    size += delta;
 
    config.base = hardcoded_load_address;
    config.memory_size = get_memory_size();
    config.kernel_size = size + CONFIG_STACK_SIZE;
 
    context_save(&ctx);
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + 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.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 __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 174	Rev 177
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 <arch/mm/memory_init.h>
51	#include <mm/frame.h>	51	#include <mm/frame.h>
52	#include <mm/page.h>	52	#include <mm/page.h>
53	#include <mm/tlb.h>	53	#include <mm/tlb.h>
54	#include <synch/waitq.h>	54	#include <synch/waitq.h>
55		55
56	#include <arch.h>	56	#include <arch.h>
57	#include <arch/faddr.h>	57	#include <arch/faddr.h>
58		58
59	#include <typedefs.h>	59	#include <typedefs.h>
60		60
61	char *project = "SPARTAN kernel";	61	char *project = "SPARTAN kernel";
62	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";
63		63
64	config_t config;	64	config_t config;
65	context_t ctx;	65	context_t ctx;
66		66
67	/*	67	/*
68	* These 'hardcoded' variables will be intialised by	68	* These 'hardcoded' variables will be intialised by
69	* the linker or the low level assembler code with	69	* the linker or the low level assembler code with
70	* appropriate sizes and addresses.	70	* appropriate sizes and addresses.
71	*/	71	*/
72	__address hardcoded_load_address = 0;	72	__address hardcoded_load_address = 0;
73	size_t hardcoded_ktext_size = 0;	73	size_t hardcoded_ktext_size = 0;
74	size_t hardcoded_kdata_size = 0;	74	size_t hardcoded_kdata_size = 0;
75		75
76	void main_bsp(void);	76	void main_bsp(void);
77	void main_ap(void);	77	void main_ap(void);
78		78
79	/*	79	/*
80	* These two functions prevent stack from underflowing during the	80	* These two functions prevent stack from underflowing during the
81	* 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
82	* space. The stack could get corrupted by a fooled compiler-generated	82	* space. The stack could get corrupted by a fooled compiler-generated
83	* pop sequence otherwise.	83	* pop sequence otherwise.
84	*/	84	*/
85	static void main_bsp_separated_stack(void);	85	static void main_bsp_separated_stack(void);
86	static void main_ap_separated_stack(void);	86	static void main_ap_separated_stack(void);
87		87
88		88
89	/** Bootstrap CPU main kernel routine	89	/** Bootstrap CPU main kernel routine
90	*	90	*
91	* Initializes the kernel by bootstrap CPU.	91	* Initializes the kernel by bootstrap CPU.
92	*	92	*
93	* Assuming cpu_priority_high().	93	* Assuming cpu_priority_high().
94	*	94	*
95	*/	95	*/
96	void main_bsp(void)	96	void main_bsp(void)
97	{	97	{
98	config.cpu_count = 1;	98	config.cpu_count = 1;
99	config.cpu_active = 1;	99	config.cpu_active = 1;
-		100	size_t size, delta;
-		101
-		102	/*
-		103	* Calculate 'size' that kernel and heap occupies in memory.
-		104	*/
-		105	size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE;
-		106
-		107	/*
-		108	* We need the boot stack to start on page boundary.
-		109	* That is why 'delta' is calculated.
-		110	*/
-		111	delta = PAGE_SIZE - ((hardcoded_load_address + size) % PAGE_SIZE);
-		112	delta = (delta == PAGE_SIZE) ? 0 : delta;
-		113
-		114	size += delta;
100		115
101	config.base = hardcoded_load_address;	116	config.base = hardcoded_load_address;
102	config.memory_size = get_memory_size();	117	config.memory_size = get_memory_size();
103	config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;	118	config.kernel_size = size + CONFIG_STACK_SIZE;
104		119
105	context_save(&ctx);	120	context_save(&ctx);
106	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE, CONFIG_STACK_SIZE);	121	context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + size, CONFIG_STACK_SIZE);
107	context_restore(&ctx);	122	context_restore(&ctx);
108	/* not reached */	123	/* not reached */
109	}	124	}
110		125
111		126
112	/** Bootstrap CPU main kernel routine stack wrapper	127	/** Bootstrap CPU main kernel routine stack wrapper
113	*	128	*
114	* Second part of main_bsp().	129	* Second part of main_bsp().
115	*	130	*
116	*/	131	*/
117	void main_bsp_separated_stack(void)	132	void main_bsp_separated_stack(void)
118	{	133	{
119	vm_t *m;	134	vm_t *m;
120	task_t *k;	135	task_t *k;
121	thread_t *t;	136	thread_t *t;
122		137
123	arch_pre_mm_init();	138	arch_pre_mm_init();
124		139
125	heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);	140	heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);
126	frame_init();	141	frame_init();
127	page_init();	142	page_init();
128	tlb_init();	143	tlb_init();
129		144
130	arch_post_mm_init();	145	arch_post_mm_init();
131		146
132	printf("%s\n%s\n", project, copyright);	147	printf("%s\n%s\n", project, copyright);
133	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",	148	printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
134	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);	149	config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
135		150
136	arch_late_init();	151	arch_late_init();
137		152
138	smp_init();	153	smp_init();
139	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));	154	printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
140	printf("config.cpu_count=%d\n", config.cpu_count);	155	printf("config.cpu_count=%d\n", config.cpu_count);
141		156
142	cpu_init();	157	cpu_init();
143	calibrate_delay_loop();	158	calibrate_delay_loop();
144		159
145	timeout_init();	160	timeout_init();
146	scheduler_init();	161	scheduler_init();
147	task_init();	162	task_init();
148	thread_init();	163	thread_init();
149		164
150	/*	165	/*
151	* Create kernel vm mapping.	166	* Create kernel vm mapping.
152	*/	167	*/
153	m = vm_create(GET_PTL0_ADDRESS());	168	m = vm_create(GET_PTL0_ADDRESS());
154	if (!m) panic("can't create kernel vm address space\n");	169	if (!m) panic("can't create kernel vm address space\n");
155		170
156	/*	171	/*
157	* Create kernel task.	172	* Create kernel task.
158	*/	173	*/
159	k = task_create(m);	174	k = task_create(m);
160	if (!k) panic("can't create kernel task\n");	175	if (!k) panic("can't create kernel task\n");
161		176
162	/*	177	/*
163	* Create the first thread.	178	* Create the first thread.
164	*/	179	*/
165	t = thread_create(kinit, NULL, k, 0);	180	t = thread_create(kinit, NULL, k, 0);
166	if (!t) panic("can't create kinit thread\n");	181	if (!t) panic("can't create kinit thread\n");
167		182
168	thread_ready(t);	183	thread_ready(t);
169		184
170	/*	185	/*
171	* This call to scheduler() will return to kinit,	186	* This call to scheduler() will return to kinit,
172	* starting the thread of kernel threads.	187	* starting the thread of kernel threads.
173	*/	188	*/
174	scheduler();	189	scheduler();
175	/* not reached */	190	/* not reached */
176	}	191	}
177		192
178		193
179	#ifdef __SMP__	194	#ifdef __SMP__
180	/** Application CPUs main kernel routine	195	/** Application CPUs main kernel routine
181	*	196	*
182	* Executed by application processors, temporary stack	197	* Executed by application processors, temporary stack
183	* is at ctx.sp which was set during BP boot.	198	* is at ctx.sp which was set during BP boot.
184	*	199	*
185	* Assuming cpu_priority_high().	200	* Assuming cpu_priority_high().
186	*	201	*
187	*/	202	*/
188	void main_ap(void)	203	void main_ap(void)
189	{	204	{
190	/*	205	/*
191	* Incrementing the active CPU counter will guarantee that the	206	* Incrementing the active CPU counter will guarantee that the
192	* pm_init() will not attempt to build GDT and IDT tables again.	207	* pm_init() will not attempt to build GDT and IDT tables again.
193	* Neither frame_init() will do the complete thing. Neither cpu_init()	208	* Neither frame_init() will do the complete thing. Neither cpu_init()
194	* will do.	209	* will do.
195	*/	210	*/
196	config.cpu_active++;	211	config.cpu_active++;
197		212
198	arch_pre_mm_init();	213	arch_pre_mm_init();
199	frame_init();	214	frame_init();
200	page_init();	215	page_init();
201	arch_post_mm_init();	216	arch_post_mm_init();
202		217
203	cpu_init();	218	cpu_init();
204	calibrate_delay_loop();	219	calibrate_delay_loop();
205		220
206	l_apic_init();	221	l_apic_init();
207	l_apic_debug();	222	l_apic_debug();
208		223
209		224
210	/*	225	/*
211	* If we woke kmp up before we left the kernel stack, we could	226	* If we woke kmp up before we left the kernel stack, we could
212	* collide with another CPU coming up. To prevent this, we	227	* collide with another CPU coming up. To prevent this, we
213	* switch to this cpu's private stack prior to waking kmp up.	228	* switch to this cpu's private stack prior to waking kmp up.
214	*/	229	*/
215	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);	230	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);
216	context_restore(&CPU->saved_context);	231	context_restore(&CPU->saved_context);
217	/* not reached */	232	/* not reached */
218	}	233	}
219		234
220		235
221	/** Application CPUs main kernel routine stack wrapper	236	/** Application CPUs main kernel routine stack wrapper
222	*	237	*
223	* Second part of main_ap().	238	* Second part of main_ap().
224	*	239	*
225	*/	240	*/
226	void main_ap_separated_stack(void)	241	void main_ap_separated_stack(void)
227	{	242	{
228	/*	243	/*
229	* Configure timeouts for this cpu.	244	* Configure timeouts for this cpu.
230	*/	245	*/
231	timeout_init();	246	timeout_init();
232		247
233	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	248	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
234	scheduler();	249	scheduler();
235	/* not reached */	250	/* not reached */
236	}	251	}
237	#endif /* __SMP__*/	252	#endif /* __SMP__*/
238		253

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/main/main.c @ 1671 – Rev 174 → 177