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