Subversion Repositories HelenOS

Rev

Rev 81 | Rev 105 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1
/*
2
 * Copyright (C) 2001-2004 Jakub Jermar
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
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
15
 *   derived from this software without specific prior written permission.
16
 *
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
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
#include <arch/asm.h>
97 jermar 30
#include <context.h>
1 jermar 31
#include <print.h>
68 decky 32
#include <panic.h>
1 jermar 33
#include <config.h>
34
#include <time/clock.h>
35
#include <proc/scheduler.h>
36
#include <proc/thread.h>
37
#include <proc/task.h>
38
#include <mm/vm.h>
39
#include <main/kinit.h>
40
#include <cpu.h>
41
#include <mm/heap.h>
42
 
43
#ifdef __SMP__
11 jermar 44
#include <arch/smp/apic.h>
34 jermar 45
#include <arch/smp/mps.h>
1 jermar 46
#endif /* __SMP__ */
47
 
34 jermar 48
#include <smp/smp.h>
49
 
1 jermar 50
#include <mm/frame.h>
51
#include <mm/page.h>
5 jermar 52
#include <mm/tlb.h>
1 jermar 53
#include <synch/waitq.h>
54
 
55
#include <arch.h>
76 jermar 56
#include <arch/faddr.h>
1 jermar 57
 
58
char *project = "SPARTAN kernel";
78 jermar 59
char *copyright = "Copyright (C) 2001-2005 Jakub Jermar\nCopyright (C) 2005 HelenOS project";
1 jermar 60
 
61
config_t config;
62
context_t ctx;
63
 
64
/*
65
 * These 'hardcoded' variables will be intialised by
66
 * the linker with appropriate sizes and addresses.
67
 */
37 jermar 68
__address hardcoded_load_address = 0;
1 jermar 69
__u32 hardcoded_ktext_size = 0;
70
__u32 hardcoded_kdata_size = 0;
71
 
72
void main_bsp(void);
73
void main_ap(void);
74
 
75
/*
76
 * These two functions prevent stack from underflowing during the
77
 * kernel boot phase when SP is set to the very top of the reserved
78
 * space. The stack could get corrupted by a fooled compiler-generated
79
 * pop sequence otherwise.
80
 */
81
static void main_bsp_separated_stack(void);
82
static void main_ap_separated_stack(void);
83
 
84
/*
85
 * Executed by the bootstrap processor. cpu_priority_high()'d
86
 */
87
void main_bsp(void)
88
{
89
    config.cpu_count = 1;
90
    config.cpu_active = 1;
91
 
92
    config.base = hardcoded_load_address;
93
    config.memory_size = CONFIG_MEMORY_SIZE;
94
    config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;
95
 
47 jermar 96
    context_save(&ctx);
97 jermar 97
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE, CONFIG_STACK_SIZE);
47 jermar 98
    context_restore(&ctx);
1 jermar 99
    /* not reached */
100
}
101
 
102
void main_bsp_separated_stack(void) {
103
    vm_t *m;
104
    task_t *k;
105
    thread_t *t;
106
 
26 jermar 107
    arch_pre_mm_init();
1 jermar 108
 
23 jermar 109
    heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);
110
    frame_init();
111
    page_init();
112
    tlb_init();
16 jermar 113
 
23 jermar 114
    arch_post_mm_init();
115
 
71 jermar 116
    printf("%s\n%s\n", project, copyright);
1 jermar 117
 
77 jermar 118
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
1 jermar 119
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
120
 
32 jermar 121
    arch_late_init();
27 jermar 122
 
34 jermar 123
    smp_init();
27 jermar 124
    printf("config.cpu_count=%d\n", config.cpu_count);
1 jermar 125
 
126
    cpu_init();
127
    calibrate_delay_loop();
128
 
129
    timeout_init();
130
    scheduler_init();
131
    task_init();
132
    thread_init();
133
 
134
    /*
135
     * Create kernel vm mapping.
136
     */
137
    m = vm_create();
138
    if (!m) panic("can't create kernel vm address space\n");
139
 
140
    /*
141
     * Create kernel task.
142
     */
143
    k = task_create(m);
144
    if (!k) panic("can't create kernel task\n");
145
 
146
    /*
147
     * Create the first thread.
148
     */
149
    t = thread_create(kinit, NULL, k, 0);
150
    if (!t) panic("can't create kinit thread\n");
151
 
152
    thread_ready(t);
153
 
154
    /*
155
     * This call to scheduler() will return to kinit,
156
     * starting the thread of kernel threads.
157
     */
158
    scheduler();
159
    /* not reached */
160
}
161
 
162
#ifdef __SMP__
163
/*
164
 * Executed by application processors. cpu_priority_high()'d
165
 * Temporary stack is at ctx.sp which was set during BP boot.
166
 */
167
void main_ap(void)
168
{
169
    /*
170
     * Incrementing the active CPU counter will guarantee that the
171
     * pm_init() will not attempt to build GDT and IDT tables again.
172
     * Neither frame_init() will do the complete thing. Neither cpu_init()
173
     * will do.
174
     */
175
    config.cpu_active++;
176
 
26 jermar 177
    arch_pre_mm_init();
1 jermar 178
    frame_init();
179
    page_init();
26 jermar 180
    arch_post_mm_init();
1 jermar 181
 
182
    cpu_init();
183
    calibrate_delay_loop();
184
 
185
    l_apic_init();
186
    l_apic_debug();
187
 
188
 
189
    /*
190
     * If we woke kmp up before we left the kernel stack, we could
191
     * collide with another CPU coming up. To prevent this, we
192
     * switch to this cpu's private stack prior to waking kmp up.
193
     */
97 jermar 194
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), CPU->stack, CPU_STACK_SIZE);
47 jermar 195
    context_restore(&CPU->saved_context);
1 jermar 196
    /* not reached */
197
}
198
 
199
void main_ap_separated_stack(void)
200
{
201
    /*
202
     * Configure timeouts for this cpu.
203
     */
204
    timeout_init();
205
 
206
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
207
    scheduler();
208
    /* not reached */
209
}
210
#endif /* __SMP__*/