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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/arch.h>
56
#include <arch/arch.h>
57
#include <arch.h>
57
#include <arch.h>
58
#include <arch/faddr.h>
58
#include <arch/faddr.h>
59
 
59
 
60
#include <typedefs.h>
60
#include <typedefs.h>
61
 
61
 
62
char *project = "SPARTAN kernel";
62
char *project = "SPARTAN kernel";
63
char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project";
63
char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project";
64
 
64
 
65
config_t config;
65
config_t config;
66
context_t ctx;
66
context_t ctx;
67
 
67
 
68
/*
68
/*
69
 * These 'hardcoded' variables will be intialised by
69
 * These 'hardcoded' variables will be intialised by
70
 * the linker or the low level assembler code with
70
 * the linker or the low level assembler code with
71
 * appropriate sizes and addresses.
71
 * appropriate sizes and addresses.
72
 */
72
 */
73
__address hardcoded_load_address = 0;
73
__address hardcoded_load_address = 0;
74
size_t hardcoded_ktext_size = 0;
74
size_t hardcoded_ktext_size = 0;
75
size_t hardcoded_kdata_size = 0;
75
size_t hardcoded_kdata_size = 0;
76
 
76
 
77
/*
77
/*
78
 * Size of memory in bytes taken by kernel and heap.
78
 * Size of memory in bytes taken by kernel and heap.
79
 */
79
 */
80
static size_t kernel_size;
80
static size_t kernel_size;
81
 
81
 
82
/*
82
/*
83
 * Extra space on heap to make the stack start on page boundary.
83
 * Extra space on heap to make the stack start on page boundary.
84
 */
84
 */
85
static size_t heap_delta;
85
static size_t heap_delta;
86
 
86
 
87
void main_bsp(void);
87
void main_bsp(void);
88
void main_ap(void);
88
void main_ap(void);
89
 
89
 
90
/*
90
/*
91
 * These two functions prevent stack from underflowing during the
91
 * These two functions prevent stack from underflowing during the
92
 * kernel boot phase when SP is set to the very top of the reserved
92
 * kernel boot phase when SP is set to the very top of the reserved
93
 * space. The stack could get corrupted by a fooled compiler-generated
93
 * space. The stack could get corrupted by a fooled compiler-generated
94
 * pop sequence otherwise.
94
 * pop sequence otherwise.
95
 */
95
 */
96
static void main_bsp_separated_stack(void);
96
static void main_bsp_separated_stack(void);
97
static void main_ap_separated_stack(void);
97
static void main_ap_separated_stack(void);
98
 
98
 
99
/** Bootstrap CPU main kernel routine
99
/** Bootstrap CPU main kernel routine
100
 *
100
 *
101
 * Initializes the kernel by bootstrap CPU.
101
 * Initializes the kernel by bootstrap CPU.
102
 *
102
 *
103
 * Assuming cpu_priority_high().
103
 * Assuming cpu_priority_high().
104
 *
104
 *
105
 */
105
 */
106
void main_bsp(void)
106
void main_bsp(void)
107
{
107
{
108
    config.cpu_count = 1;
108
    config.cpu_count = 1;
109
    config.cpu_active = 1;
109
    config.cpu_active = 1;
110
   
110
   
111
    kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE;    
111
    kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE;    
112
    heap_delta = PAGE_SIZE - ((hardcoded_load_address + kernel_size) % PAGE_SIZE);
112
    heap_delta = PAGE_SIZE - ((hardcoded_load_address + kernel_size) % PAGE_SIZE);
113
    heap_delta = (heap_delta == PAGE_SIZE) ? 0 : heap_delta;
113
    heap_delta = (heap_delta == PAGE_SIZE) ? 0 : heap_delta;
114
    kernel_size += heap_delta;
114
    kernel_size += heap_delta;
115
   
115
   
116
    config.base = hardcoded_load_address;
116
    config.base = hardcoded_load_address;
117
    config.memory_size = get_memory_size();
117
    config.memory_size = get_memory_size();
118
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
118
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
119
   
119
   
120
    context_save(&ctx);
120
    context_save(&ctx);
121
    early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size + heap_delta, CONFIG_STACK_SIZE + CONFIG_HEAP_SIZE);
121
    early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size + heap_delta, CONFIG_STACK_SIZE + CONFIG_HEAP_SIZE);
122
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
122
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
123
    context_restore(&ctx);
123
    context_restore(&ctx);
124
    /* not reached */
124
    /* not reached */
125
}
125
}
126
 
126
 
127
 
127
 
128
/** Bootstrap CPU main kernel routine stack wrapper
128
/** Bootstrap CPU main kernel routine stack wrapper
129
 *
129
 *
130
 * Second part of main_bsp().
130
 * Second part of main_bsp().
131
 *
131
 *
132
 */
132
 */
133
void main_bsp_separated_stack(void)
133
void main_bsp_separated_stack(void)
134
{
134
{
135
 
-
 
136
    int a;
-
 
137
    vm_t *m;
135
    vm_t *m;
138
    task_t *k;
136
    task_t *k;
139
    thread_t *t;
137
    thread_t *t;
140
   
138
   
141
    the_initialize(THE);
139
    the_initialize(THE);
142
   
140
   
143
    arch_pre_mm_init();
141
    arch_pre_mm_init();
144
    heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE + heap_delta);
142
    heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE + heap_delta);
145
    frame_init();
143
    frame_init();
146
    page_init();
144
    page_init();
147
    tlb_init();
145
    tlb_init();
148
 
146
 
149
    arch_post_mm_init();
147
    arch_post_mm_init();
150
 
148
 
151
    printf("%s\n%s\n", project, copyright);
149
    printf("%s\n%s\n", project, copyright);
152
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
150
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
153
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
151
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
154
 
152
 
155
    arch_late_init();
153
    arch_late_init();
156
   
154
   
157
    smp_init();
155
    smp_init();
158
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
156
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
159
    printf("config.cpu_count=%d\n", config.cpu_count);
157
    printf("config.cpu_count=%d\n", config.cpu_count);
160
 
158
 
161
    cpu_init();
159
    cpu_init();
162
 
160
 
163
    calibrate_delay_loop();
161
    calibrate_delay_loop();
164
   
162
   
165
    timeout_init();
163
    timeout_init();
166
    scheduler_init();
164
    scheduler_init();
167
    task_init();
165
    task_init();
168
    thread_init();
166
    thread_init();
169
 
167
 
170
    /*
168
    /*
171
     * Create kernel vm mapping.
169
     * Create kernel vm mapping.
172
     */
170
     */
173
    m = vm_create(GET_PTL0_ADDRESS());
171
    m = vm_create(GET_PTL0_ADDRESS());
174
    if (!m)
172
    if (!m)
175
        panic("can't create kernel vm address space\n");
173
        panic("can't create kernel vm address space\n");
176
 
174
 
177
    /*
175
    /*
178
     * Create kernel task.
176
     * Create kernel task.
179
     */
177
     */
180
    k = task_create(m);
178
    k = task_create(m);
181
    if (!k)
179
    if (!k)
182
        panic("can't create kernel task\n");
180
        panic("can't create kernel task\n");
183
       
181
       
184
    /*
182
    /*
185
     * Create the first thread.
183
     * Create the first thread.
186
     */
184
     */
187
    t = thread_create(kinit, NULL, k, 0);
185
    t = thread_create(kinit, NULL, k, 0);
188
    if (!t)
186
    if (!t)
189
        panic("can't create kinit thread\n");
187
        panic("can't create kinit thread\n");
190
    thread_ready(t);
188
    thread_ready(t);
191
 
189
 
192
    /*
190
    /*
193
     * This call to scheduler() will return to kinit,
191
     * This call to scheduler() will return to kinit,
194
     * starting the thread of kernel threads.
192
     * starting the thread of kernel threads.
195
     */
193
     */
196
    scheduler();
194
    scheduler();
197
    /* not reached */
195
    /* not reached */
198
}
196
}
199
 
197
 
200
 
198
 
201
#ifdef __SMP__
199
#ifdef __SMP__
202
/** Application CPUs main kernel routine
200
/** Application CPUs main kernel routine
203
 *
201
 *
204
 * Executed by application processors, temporary stack
202
 * Executed by application processors, temporary stack
205
 * is at ctx.sp which was set during BP boot.
203
 * is at ctx.sp which was set during BP boot.
206
 *
204
 *
207
 * Assuming  cpu_priority_high().
205
 * Assuming  cpu_priority_high().
208
 *
206
 *
209
 */
207
 */
210
void main_ap(void)
208
void main_ap(void)
211
{
209
{
212
    /*
210
    /*
213
     * Incrementing the active CPU counter will guarantee that the
211
     * Incrementing the active CPU counter will guarantee that the
214
     * pm_init() will not attempt to build GDT and IDT tables again.
212
     * pm_init() will not attempt to build GDT and IDT tables again.
215
     * Neither frame_init() will do the complete thing. Neither cpu_init()
213
     * Neither frame_init() will do the complete thing. Neither cpu_init()
216
     * will do.
214
     * will do.
217
     */
215
     */
218
    config.cpu_active++;
216
    config.cpu_active++;
219
 
217
 
220
    /*
218
    /*
221
     * The THE structure is well defined because ctx.sp is used as stack.
219
     * The THE structure is well defined because ctx.sp is used as stack.
222
     */
220
     */
223
    the_initialize(THE);
221
    the_initialize(THE);
224
 
222
 
225
    arch_pre_mm_init();
223
    arch_pre_mm_init();
226
    frame_init();
224
    frame_init();
227
    page_init();
225
    page_init();
228
    arch_post_mm_init();
226
    arch_post_mm_init();
229
 
227
 
230
    cpu_init();
228
    cpu_init();
231
    calibrate_delay_loop();
229
    calibrate_delay_loop();
232
 
230
 
233
    l_apic_init();
231
    l_apic_init();
234
    l_apic_debug();
232
    l_apic_debug();
235
 
233
 
236
    the_copy(THE, (the_t *) CPU->stack);
234
    the_copy(THE, (the_t *) CPU->stack);
237
 
235
 
238
    /*
236
    /*
239
     * If we woke kmp up before we left the kernel stack, we could
237
     * If we woke kmp up before we left the kernel stack, we could
240
     * collide with another CPU coming up. To prevent this, we
238
     * collide with another CPU coming up. To prevent this, we
241
     * switch to this cpu's private stack prior to waking kmp up.
239
     * switch to this cpu's private stack prior to waking kmp up.
242
     */
240
     */
243
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);
241
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);
244
    context_restore(&CPU->saved_context);
242
    context_restore(&CPU->saved_context);
245
    /* not reached */
243
    /* not reached */
246
}
244
}
247
 
245
 
248
 
246
 
249
/** Application CPUs main kernel routine stack wrapper
247
/** Application CPUs main kernel routine stack wrapper
250
 *
248
 *
251
 * Second part of main_ap().
249
 * Second part of main_ap().
252
 *
250
 *
253
 */
251
 */
254
void main_ap_separated_stack(void)
252
void main_ap_separated_stack(void)
255
{
253
{
256
    /*
254
    /*
257
     * Configure timeouts for this cpu.
255
     * Configure timeouts for this cpu.
258
     */
256
     */
259
    timeout_init();
257
    timeout_init();
260
 
258
 
261
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
259
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
262
    scheduler();
260
    scheduler();
263
    /* not reached */
261
    /* not reached */
264
}
262
}
265
#endif /* __SMP__*/
263
#endif /* __SMP__*/
266
 
264