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/*
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
/*
76
/*
77
 * Size of memory in bytes taken by kernel and heap.
77
 * Size of memory in bytes taken by kernel and heap.
78
 */
78
 */
79
static size_t kernel_size;
79
static size_t kernel_size;
80
 
80
 
81
/*
81
/*
82
 * Extra space on heap to make the stack start on page boundary.
82
 * Extra space on heap to make the stack start on page boundary.
83
 */
83
 */
84
static size_t heap_delta;
84
static size_t heap_delta;
85
 
85
 
86
void main_bsp(void);
86
void main_bsp(void);
87
void main_ap(void);
87
void main_ap(void);
88
 
88
 
89
/*
89
/*
90
 * These two functions prevent stack from underflowing during the
90
 * These two functions prevent stack from underflowing during the
91
 * kernel boot phase when SP is set to the very top of the reserved
91
 * kernel boot phase when SP is set to the very top of the reserved
92
 * space. The stack could get corrupted by a fooled compiler-generated
92
 * space. The stack could get corrupted by a fooled compiler-generated
93
 * pop sequence otherwise.
93
 * pop sequence otherwise.
94
 */
94
 */
95
static void main_bsp_separated_stack(void);
95
static void main_bsp_separated_stack(void);
96
static void main_ap_separated_stack(void);
96
static void main_ap_separated_stack(void);
97
 
97
 
98
/** Bootstrap CPU main kernel routine
98
/** Bootstrap CPU main kernel routine
99
 *
99
 *
100
 * Initializes the kernel by bootstrap CPU.
100
 * Initializes the kernel by bootstrap CPU.
101
 *
101
 *
102
 * Assuming cpu_priority_high().
102
 * Assuming cpu_priority_high().
103
 *
103
 *
104
 */
104
 */
105
void main_bsp(void)
105
void main_bsp(void)
106
{
106
{
107
    config.cpu_count = 1;
107
    config.cpu_count = 1;
108
    config.cpu_active = 1;
108
    config.cpu_active = 1;
109
 
109
 
110
    kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE;    
110
    kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE;    
111
    heap_delta = PAGE_SIZE - ((hardcoded_load_address + kernel_size) % PAGE_SIZE);
111
    heap_delta = PAGE_SIZE - ((hardcoded_load_address + kernel_size) % PAGE_SIZE);
112
    heap_delta = (heap_delta == PAGE_SIZE) ? 0 : heap_delta;
112
    heap_delta = (heap_delta == PAGE_SIZE) ? 0 : heap_delta;
113
    kernel_size += heap_delta;
113
    kernel_size += heap_delta;
114
 
114
 
115
    config.base = hardcoded_load_address;
115
    config.base = hardcoded_load_address;
116
    config.memory_size = get_memory_size();
116
    config.memory_size = get_memory_size();
117
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
117
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
118
 
118
 
119
    context_save(&ctx);
119
    context_save(&ctx);
120
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
120
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
-
 
121
    context_map_stack(config.base + kernel_size, CONFIG_STACK_SIZE);
121
    context_restore(&ctx);
122
    context_restore(&ctx);
122
    /* not reached */
123
    /* not reached */
123
}
124
}
124
 
125
 
125
 
126
 
126
/** Bootstrap CPU main kernel routine stack wrapper
127
/** Bootstrap CPU main kernel routine stack wrapper
127
 *
128
 *
128
 * Second part of main_bsp().
129
 * Second part of main_bsp().
129
 *
130
 *
130
 */
131
 */
131
void main_bsp_separated_stack(void)
132
void main_bsp_separated_stack(void)
132
{
133
{
133
    vm_t *m;
134
    vm_t *m;
134
    task_t *k;
135
    task_t *k;
135
    thread_t *t;
136
    thread_t *t;
136
 
137
   
137
    the_initialize(THE);
138
    the_initialize(THE);
138
 
139
 
139
    arch_pre_mm_init();
140
    arch_pre_mm_init();
140
    heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE + heap_delta);
141
    heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE + heap_delta);
141
    frame_init();
142
    frame_init();
142
    page_init();
143
    page_init();
143
    tlb_init();
144
    tlb_init();
144
 
145
 
145
    arch_post_mm_init();
146
    arch_post_mm_init();
146
 
147
 
147
    printf("%s\n%s\n", project, copyright);
148
    printf("%s\n%s\n", project, copyright);
148
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
149
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
149
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
150
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
150
 
151
 
151
    arch_late_init();
152
    arch_late_init();
152
   
153
   
153
    smp_init();
154
    smp_init();
154
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
155
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
155
    printf("config.cpu_count=%d\n", config.cpu_count);
156
    printf("config.cpu_count=%d\n", config.cpu_count);
156
 
157
 
157
    cpu_init();
158
    cpu_init();
158
    calibrate_delay_loop();
159
    calibrate_delay_loop();
159
 
160
 
160
    timeout_init();
161
    timeout_init();
161
    scheduler_init();
162
    scheduler_init();
162
    task_init();
163
    task_init();
163
    thread_init();
164
    thread_init();
164
 
165
 
165
    /*
166
    /*
166
     * Create kernel vm mapping.
167
     * Create kernel vm mapping.
167
     */
168
     */
168
    m = vm_create(GET_PTL0_ADDRESS());
169
    m = vm_create(GET_PTL0_ADDRESS());
169
    if (!m) panic("can't create kernel vm address space\n");
170
    if (!m) panic("can't create kernel vm address space\n");
170
 
171
 
171
    /*
172
    /*
172
     * Create kernel task.
173
     * Create kernel task.
173
     */
174
     */
174
    k = task_create(m);
175
    k = task_create(m);
175
    if (!k) panic("can't create kernel task\n");
176
    if (!k) panic("can't create kernel task\n");
176
 
177
 
177
    /*
178
    /*
178
     * Create the first thread.
179
     * Create the first thread.
179
     */
180
     */
180
    t = thread_create(kinit, NULL, k, 0);
181
    t = thread_create(kinit, NULL, k, 0);
181
    if (!t) panic("can't create kinit thread\n");
182
    if (!t) panic("can't create kinit thread\n");
182
    thread_ready(t);
183
    thread_ready(t);
183
 
184
 
184
    /*
185
    /*
185
     * This call to scheduler() will return to kinit,
186
     * This call to scheduler() will return to kinit,
186
     * starting the thread of kernel threads.
187
     * starting the thread of kernel threads.
187
     */
188
     */
188
    scheduler();
189
    scheduler();
189
    /* not reached */
190
    /* not reached */
190
}
191
}
191
 
192
 
192
 
193
 
193
#ifdef __SMP__
194
#ifdef __SMP__
194
/** Application CPUs main kernel routine
195
/** Application CPUs main kernel routine
195
 *
196
 *
196
 * Executed by application processors, temporary stack
197
 * Executed by application processors, temporary stack
197
 * is at ctx.sp which was set during BP boot.
198
 * is at ctx.sp which was set during BP boot.
198
 *
199
 *
199
 * Assuming  cpu_priority_high().
200
 * Assuming  cpu_priority_high().
200
 *
201
 *
201
 */
202
 */
202
void main_ap(void)
203
void main_ap(void)
203
{
204
{
204
    /*
205
    /*
205
     * Incrementing the active CPU counter will guarantee that the
206
     * Incrementing the active CPU counter will guarantee that the
206
     * 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.
207
     * Neither frame_init() will do the complete thing. Neither cpu_init()
208
     * Neither frame_init() will do the complete thing. Neither cpu_init()
208
     * will do.
209
     * will do.
209
     */
210
     */
210
    config.cpu_active++;
211
    config.cpu_active++;
211
 
212
 
212
    /*
213
    /*
213
     * The THE structure is well defined because ctx.sp is used as stack.
214
     * The THE structure is well defined because ctx.sp is used as stack.
214
     */
215
     */
215
    the_initialize(THE);
216
    the_initialize(THE);
216
 
217
 
217
    arch_pre_mm_init();
218
    arch_pre_mm_init();
218
    frame_init();
219
    frame_init();
219
    page_init();
220
    page_init();
220
    arch_post_mm_init();
221
    arch_post_mm_init();
221
 
222
 
222
    cpu_init();
223
    cpu_init();
223
    calibrate_delay_loop();
224
    calibrate_delay_loop();
224
 
225
 
225
    l_apic_init();
226
    l_apic_init();
226
    l_apic_debug();
227
    l_apic_debug();
227
 
228
 
228
    the_copy(THE, (the_t *) CPU->stack);
229
    the_copy(THE, (the_t *) CPU->stack);
229
 
230
 
230
    /*
231
    /*
231
     * If we woke kmp up before we left the kernel stack, we could
232
     * If we woke kmp up before we left the kernel stack, we could
232
     * collide with another CPU coming up. To prevent this, we
233
     * collide with another CPU coming up. To prevent this, we
233
     * switch to this cpu's private stack prior to waking kmp up.
234
     * switch to this cpu's private stack prior to waking kmp up.
234
     */
235
     */
235
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);
236
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);
236
    context_restore(&CPU->saved_context);
237
    context_restore(&CPU->saved_context);
237
    /* not reached */
238
    /* not reached */
238
}
239
}
239
 
240
 
240
 
241
 
241
/** Application CPUs main kernel routine stack wrapper
242
/** Application CPUs main kernel routine stack wrapper
242
 *
243
 *
243
 * Second part of main_ap().
244
 * Second part of main_ap().
244
 *
245
 *
245
 */
246
 */
246
void main_ap_separated_stack(void)
247
void main_ap_separated_stack(void)
247
{
248
{
248
    /*
249
    /*
249
     * Configure timeouts for this cpu.
250
     * Configure timeouts for this cpu.
250
     */
251
     */
251
    timeout_init();
252
    timeout_init();
252
 
253
 
253
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
254
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
254
    scheduler();
255
    scheduler();
255
    /* not reached */
256
    /* not reached */
256
}
257
}
257
#endif /* __SMP__*/
258
#endif /* __SMP__*/
258
 
259