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