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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 <debug.h>
33
#include <debug.h>
34
#include <config.h>
34
#include <config.h>
35
#include <time/clock.h>
35
#include <time/clock.h>
36
#include <proc/scheduler.h>
36
#include <proc/scheduler.h>
37
#include <proc/thread.h>
37
#include <proc/thread.h>
38
#include <proc/task.h>
38
#include <proc/task.h>
39
#include <main/kinit.h>
39
#include <main/kinit.h>
40
#include <console/kconsole.h>
40
#include <console/kconsole.h>
41
#include <cpu.h>
41
#include <cpu.h>
42
#include <align.h>
42
#include <align.h>
43
#include <interrupt.h>
43
#include <interrupt.h>
44
 
44
 
45
#ifdef CONFIG_SMP
45
#ifdef CONFIG_SMP
46
#include <arch/smp/apic.h>
46
#include <arch/smp/apic.h>
47
#include <arch/smp/mps.h>
47
#include <arch/smp/mps.h>
48
#endif /* CONFIG_SMP */
48
#endif /* CONFIG_SMP */
49
 
49
 
50
#include <smp/smp.h>
50
#include <smp/smp.h>
51
 
51
 
52
#include <arch/mm/memory_init.h>
52
#include <arch/mm/memory_init.h>
53
#include <mm/heap.h>
53
#include <mm/heap.h>
54
#include <mm/frame.h>
54
#include <mm/frame.h>
55
#include <mm/page.h>
55
#include <mm/page.h>
56
#include <mm/tlb.h>
56
#include <mm/tlb.h>
57
#include <mm/vm.h>
57
#include <mm/vm.h>
58
 
58
 
59
#include <synch/waitq.h>
59
#include <synch/waitq.h>
60
 
60
 
61
#include <arch/arch.h>
61
#include <arch/arch.h>
62
#include <arch.h>
62
#include <arch.h>
63
#include <arch/faddr.h>
63
#include <arch/faddr.h>
64
 
64
 
65
#include <typedefs.h>
65
#include <typedefs.h>
66
 
66
 
67
char *project = "SPARTAN kernel";
67
char *project = "SPARTAN kernel";
68
char *copyright = "Copyright (C) 2001-2005 HelenOS project";
68
char *copyright = "Copyright (C) 2001-2005 HelenOS project";
69
char *release = RELEASE;
69
char *release = RELEASE;
70
char *name = NAME;
70
char *name = NAME;
71
char *arch = STRING(ARCH);
71
char *arch = ARCH;
72
 
72
 
73
#ifdef REVISION
73
#ifdef REVISION
74
    char *revision = ", revision " REVISION;
74
    char *revision = ", revision " REVISION;
75
#else
75
#else
76
    char *revision = "";
76
    char *revision = "";
77
#endif
77
#endif
78
 
78
 
79
#ifdef TIMESTAMP
79
#ifdef TIMESTAMP
80
    char *timestamp = " on " TIMESTAMP;
80
    char *timestamp = " on " TIMESTAMP;
81
#else
81
#else
82
    char *timestamp = "";
82
    char *timestamp = "";
83
#endif
83
#endif
84
 
84
 
85
 
85
 
86
config_t config;
86
config_t config;
87
context_t ctx;
87
context_t ctx;
88
 
88
 
89
/**
89
/**
90
 * These 'hardcoded' variables will be intialized by
90
 * These 'hardcoded' variables will be intialized by
91
 * the linker or the low level assembler code with
91
 * the linker or the low level assembler code with
92
 * appropriate sizes and addresses.
92
 * appropriate sizes and addresses.
93
 */
93
 */
94
__address hardcoded_load_address = 0;
94
__address hardcoded_load_address = 0;
95
size_t hardcoded_ktext_size = 0;
95
size_t hardcoded_ktext_size = 0;
96
size_t hardcoded_kdata_size = 0;
96
size_t hardcoded_kdata_size = 0;
97
 
97
 
98
__address init_addr = 0;
98
__address init_addr = 0;
99
size_t init_size = 0;
99
size_t init_size = 0;
100
 
100
 
101
/**
101
/**
102
 * Size of memory in bytes taken by kernel and heap.
102
 * Size of memory in bytes taken by kernel and heap.
103
 */
103
 */
104
static size_t kernel_size;
104
static size_t kernel_size;
105
 
105
 
106
/**
106
/**
107
 * Size of heap.
107
 * Size of heap.
108
 */
108
 */
109
static size_t heap_size;
109
static size_t heap_size;
110
 
110
 
111
 
111
 
112
/**
112
/**
113
 * Extra space between heap and stack
113
 * Extra space between heap and stack
114
 * enforced by alignment requirements.
114
 * enforced by alignment requirements.
115
 */
115
 */
116
static size_t heap_delta;
116
static size_t heap_delta;
117
 
117
 
118
void main_bsp(void);
118
void main_bsp(void);
119
void main_ap(void);
119
void main_ap(void);
120
 
120
 
121
/*
121
/*
122
 * These two functions prevent stack from underflowing during the
122
 * These two functions prevent stack from underflowing during the
123
 * kernel boot phase when SP is set to the very top of the reserved
123
 * kernel boot phase when SP is set to the very top of the reserved
124
 * space. The stack could get corrupted by a fooled compiler-generated
124
 * space. The stack could get corrupted by a fooled compiler-generated
125
 * pop sequence otherwise.
125
 * pop sequence otherwise.
126
 */
126
 */
127
static void main_bsp_separated_stack(void);
127
static void main_bsp_separated_stack(void);
128
static void main_ap_separated_stack(void);
128
static void main_ap_separated_stack(void);
129
 
129
 
130
/** Bootstrap CPU main kernel routine
130
/** Bootstrap CPU main kernel routine
131
 *
131
 *
132
 * Initializes the kernel by bootstrap CPU.
132
 * Initializes the kernel by bootstrap CPU.
133
 *
133
 *
134
 * Assuming interrupts_disable().
134
 * Assuming interrupts_disable().
135
 *
135
 *
136
 */
136
 */
137
void main_bsp(void)
137
void main_bsp(void)
138
{
138
{
139
    config.cpu_count = 1;
139
    config.cpu_count = 1;
140
    config.cpu_active = 1;
140
    config.cpu_active = 1;
141
    config.base = hardcoded_load_address;
141
    config.base = hardcoded_load_address;
142
    config.memory_size = get_memory_size();
142
    config.memory_size = get_memory_size();
143
 
143
 
144
    heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);
144
    heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);
145
    kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);
145
    kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);
146
    heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);
146
    heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);
147
   
147
   
148
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
148
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
149
   
149
   
150
    context_save(&ctx);
150
    context_save(&ctx);
151
    early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);
151
    early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);
152
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
152
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
153
    context_restore(&ctx);
153
    context_restore(&ctx);
154
    /* not reached */
154
    /* not reached */
155
}
155
}
156
 
156
 
157
 
157
 
158
/** Bootstrap CPU main kernel routine stack wrapper
158
/** Bootstrap CPU main kernel routine stack wrapper
159
 *
159
 *
160
 * Second part of main_bsp().
160
 * Second part of main_bsp().
161
 *
161
 *
162
 */
162
 */
163
void main_bsp_separated_stack(void)
163
void main_bsp_separated_stack(void)
164
{
164
{
165
    vm_t *m;
165
    vm_t *m;
166
    task_t *k;
166
    task_t *k;
167
    thread_t *t;
167
    thread_t *t;
168
   
168
   
169
    the_initialize(THE);
169
    the_initialize(THE);
170
   
170
   
171
    /*
171
    /*
172
     * kconsole data structures must be initialized very early
172
     * kconsole data structures must be initialized very early
173
     * because other subsystems will register their respective
173
     * because other subsystems will register their respective
174
     * commands.
174
     * commands.
175
     */
175
     */
176
    kconsole_init();
176
    kconsole_init();
177
    /* Exception handler initialization, before architecture
177
    /* Exception handler initialization, before architecture
178
     * starts adding it's own handlers
178
     * starts adding it's own handlers
179
     */
179
     */
180
    exc_init();
180
    exc_init();
181
   
181
   
182
    arch_pre_mm_init();
182
    arch_pre_mm_init();
183
    early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);
183
    early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);
184
    frame_init();
184
    frame_init();
185
    page_init();
185
    page_init();
186
    tlb_init();
186
    tlb_init();
187
    arch_post_mm_init();
187
    arch_post_mm_init();
188
 
188
 
189
    printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
189
    printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
190
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
190
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
191
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
191
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
192
 
192
 
193
    arch_pre_smp_init();
193
    arch_pre_smp_init();
194
    smp_init();
194
    smp_init();
195
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
195
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
196
    printf("config.cpu_count=%d\n", config.cpu_count);
196
    printf("config.cpu_count=%d\n", config.cpu_count);
197
 
197
 
198
    cpu_init();
198
    cpu_init();
199
 
199
 
200
    calibrate_delay_loop();
200
    calibrate_delay_loop();
201
   
201
   
202
    timeout_init();
202
    timeout_init();
203
    scheduler_init();
203
    scheduler_init();
204
    task_init();
204
    task_init();
205
    thread_init();
205
    thread_init();
206
 
206
 
207
    /*
207
    /*
208
     * Create kernel vm mapping.
208
     * Create kernel vm mapping.
209
     */
209
     */
210
    m = vm_create(GET_PTL0_ADDRESS());
210
    m = vm_create(GET_PTL0_ADDRESS());
211
    if (!m)
211
    if (!m)
212
        panic("can't create kernel vm address space\n");
212
        panic("can't create kernel vm address space\n");
213
 
213
 
214
    /*
214
    /*
215
     * Create kernel task.
215
     * Create kernel task.
216
     */
216
     */
217
    k = task_create(m);
217
    k = task_create(m);
218
    if (!k)
218
    if (!k)
219
        panic("can't create kernel task\n");
219
        panic("can't create kernel task\n");
220
       
220
       
221
    /*
221
    /*
222
     * Create the first thread.
222
     * Create the first thread.
223
     */
223
     */
224
    t = thread_create(kinit, NULL, k, 0);
224
    t = thread_create(kinit, NULL, k, 0);
225
    if (!t)
225
    if (!t)
226
        panic("can't create kinit thread\n");
226
        panic("can't create kinit thread\n");
227
    thread_ready(t);
227
    thread_ready(t);
228
    /*
228
    /*
229
     * This call to scheduler() will return to kinit,
229
     * This call to scheduler() will return to kinit,
230
     * starting the thread of kernel threads.
230
     * starting the thread of kernel threads.
231
     */
231
     */
232
    scheduler();
232
    scheduler();
233
    /* not reached */
233
    /* not reached */
234
}
234
}
235
 
235
 
236
 
236
 
237
#ifdef CONFIG_SMP
237
#ifdef CONFIG_SMP
238
/** Application CPUs main kernel routine
238
/** Application CPUs main kernel routine
239
 *
239
 *
240
 * Executed by application processors, temporary stack
240
 * Executed by application processors, temporary stack
241
 * is at ctx.sp which was set during BP boot.
241
 * is at ctx.sp which was set during BP boot.
242
 *
242
 *
243
 * Assuming interrupts_disable()'d.
243
 * Assuming interrupts_disable()'d.
244
 *
244
 *
245
 */
245
 */
246
void main_ap(void)
246
void main_ap(void)
247
{
247
{
248
    /*
248
    /*
249
     * Incrementing the active CPU counter will guarantee that the
249
     * Incrementing the active CPU counter will guarantee that the
250
     * pm_init() will not attempt to build GDT and IDT tables again.
250
     * pm_init() will not attempt to build GDT and IDT tables again.
251
     * Neither frame_init() will do the complete thing. Neither cpu_init()
251
     * Neither frame_init() will do the complete thing. Neither cpu_init()
252
     * will do.
252
     * will do.
253
     */
253
     */
254
    config.cpu_active++;
254
    config.cpu_active++;
255
 
255
 
256
    /*
256
    /*
257
     * The THE structure is well defined because ctx.sp is used as stack.
257
     * The THE structure is well defined because ctx.sp is used as stack.
258
     */
258
     */
259
    the_initialize(THE);
259
    the_initialize(THE);
260
   
260
   
261
    arch_pre_mm_init();
261
    arch_pre_mm_init();
262
    frame_init();
262
    frame_init();
263
    page_init();
263
    page_init();
264
    tlb_init();
264
    tlb_init();
265
    arch_post_mm_init();
265
    arch_post_mm_init();
266
   
266
   
267
    cpu_init();
267
    cpu_init();
268
   
268
   
269
    calibrate_delay_loop();
269
    calibrate_delay_loop();
270
 
270
 
271
    l_apic_init();
271
    l_apic_init();
272
    l_apic_debug();
272
    l_apic_debug();
273
 
273
 
274
    the_copy(THE, (the_t *) CPU->stack);
274
    the_copy(THE, (the_t *) CPU->stack);
275
 
275
 
276
    /*
276
    /*
277
     * If we woke kmp up before we left the kernel stack, we could
277
     * If we woke kmp up before we left the kernel stack, we could
278
     * collide with another CPU coming up. To prevent this, we
278
     * collide with another CPU coming up. To prevent this, we
279
     * switch to this cpu's private stack prior to waking kmp up.
279
     * switch to this cpu's private stack prior to waking kmp up.
280
     */
280
     */
281
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
281
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
282
    context_restore(&CPU->saved_context);
282
    context_restore(&CPU->saved_context);
283
    /* not reached */
283
    /* not reached */
284
}
284
}
285
 
285
 
286
 
286
 
287
/** Application CPUs main kernel routine stack wrapper
287
/** Application CPUs main kernel routine stack wrapper
288
 *
288
 *
289
 * Second part of main_ap().
289
 * Second part of main_ap().
290
 *
290
 *
291
 */
291
 */
292
void main_ap_separated_stack(void)
292
void main_ap_separated_stack(void)
293
{
293
{
294
    /*
294
    /*
295
     * Configure timeouts for this cpu.
295
     * Configure timeouts for this cpu.
296
     */
296
     */
297
    timeout_init();
297
    timeout_init();
298
 
298
 
299
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
299
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
300
    scheduler();
300
    scheduler();
301
    /* not reached */
301
    /* not reached */
302
}
302
}
303
#endif /* CONFIG_SMP */
303
#endif /* CONFIG_SMP */
304
 
304