Subversion Repositories HelenOS

Rev

Rev 955 | Rev 1062 | 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>
561 decky 33
#include <debug.h>
1 jermar 34
#include <config.h>
35
#include <time/clock.h>
36
#include <proc/scheduler.h>
37
#include <proc/thread.h>
38
#include <proc/task.h>
39
#include <main/kinit.h>
675 jermar 40
#include <main/version.h>
518 jermar 41
#include <console/kconsole.h>
1 jermar 42
#include <cpu.h>
402 jermar 43
#include <align.h>
578 palkovsky 44
#include <interrupt.h>
146 cejka 45
#include <arch/mm/memory_init.h>
1 jermar 46
#include <mm/frame.h>
47
#include <mm/page.h>
684 jermar 48
#include <genarch/mm/page_pt.h>
5 jermar 49
#include <mm/tlb.h>
703 jermar 50
#include <mm/as.h>
759 palkovsky 51
#include <mm/slab.h>
1 jermar 52
#include <synch/waitq.h>
210 decky 53
#include <arch/arch.h>
1 jermar 54
#include <arch.h>
76 jermar 55
#include <arch/faddr.h>
106 jermar 56
#include <typedefs.h>
955 palkovsky 57
#include <ipc/ipc.h>
106 jermar 58
 
675 jermar 59
#ifdef CONFIG_SMP
60
#include <arch/smp/apic.h>
61
#include <arch/smp/mps.h>
62
#endif /* CONFIG_SMP */
63
#include <smp/smp.h>
64
 
65
config_t config;    /**< Global configuration structure. */
1037 decky 66
init_t init = {0};  /**< Initial user-space tasks */
675 jermar 67
 
1 jermar 68
context_t ctx;
69
 
523 jermar 70
/**
71
 * These 'hardcoded' variables will be intialized by
105 jermar 72
 * the linker or the low level assembler code with
73
 * appropriate sizes and addresses.
1 jermar 74
 */
37 jermar 75
__address hardcoded_load_address = 0;
106 jermar 76
size_t hardcoded_ktext_size = 0;
77
size_t hardcoded_kdata_size = 0;
1 jermar 78
 
79
void main_bsp(void);
80
void main_ap(void);
81
 
82
/*
83
 * These two functions prevent stack from underflowing during the
84
 * kernel boot phase when SP is set to the very top of the reserved
85
 * space. The stack could get corrupted by a fooled compiler-generated
86
 * pop sequence otherwise.
87
 */
88
static void main_bsp_separated_stack(void);
625 palkovsky 89
#ifdef CONFIG_SMP
1 jermar 90
static void main_ap_separated_stack(void);
625 palkovsky 91
#endif
1 jermar 92
 
108 decky 93
/** Bootstrap CPU main kernel routine
94
 *
95
 * Initializes the kernel by bootstrap CPU.
675 jermar 96
 * This function passes control directly to
97
 * main_bsp_separated_stack().
108 decky 98
 *
413 jermar 99
 * Assuming interrupts_disable().
108 decky 100
 *
1 jermar 101
 */
102
void main_bsp(void)
103
{
814 palkovsky 104
    __address stackaddr;
105
 
1 jermar 106
    config.cpu_count = 1;
107
    config.cpu_active = 1;
651 decky 108
 
369 jermar 109
    config.base = hardcoded_load_address;
110
    config.memory_size = get_memory_size();
210 decky 111
 
814 palkovsky 112
    config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
113
    stackaddr = config.base + config.kernel_size;
1037 decky 114
 
814 palkovsky 115
    /* Avoid placing kernel on top of init */
1037 decky 116
    count_t i;
117
    bool overlap = false;
118
    for (i = 0; i < init.cnt; i++)
119
        if (overlaps(stackaddr, CONFIG_STACK_SIZE, init.tasks[i].addr, init.tasks[i].size)) {
120
            stackaddr = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, CONFIG_STACK_SIZE);
121
            init.tasks[i].size = ALIGN_UP(init.tasks[i].size, CONFIG_STACK_SIZE) + CONFIG_STACK_SIZE;
122
            overlap = true;
123
        }
124
 
125
    if (!overlap)
814 palkovsky 126
        config.kernel_size += CONFIG_STACK_SIZE;
210 decky 127
 
47 jermar 128
    context_save(&ctx);
814 palkovsky 129
    context_set(&ctx, FADDR(main_bsp_separated_stack),
130
            stackaddr, CONFIG_STACK_SIZE);
47 jermar 131
    context_restore(&ctx);
1 jermar 132
    /* not reached */
133
}
134
 
108 decky 135
 
136
/** Bootstrap CPU main kernel routine stack wrapper
137
 *
138
 * Second part of main_bsp().
139
 *
140
 */
174 jermar 141
void main_bsp_separated_stack(void)
142
{
1 jermar 143
    task_t *k;
144
    thread_t *t;
207 decky 145
 
184 jermar 146
    the_initialize(THE);
517 jermar 147
    /*
148
     * kconsole data structures must be initialized very early
149
     * because other subsystems will register their respective
150
     * commands.
151
     */
152
    kconsole_init();
1037 decky 153
 
756 jermar 154
    /*
155
     * Exception handler initialization, before architecture
673 jermar 156
     * starts adding its own handlers
578 palkovsky 157
     */
158
    exc_init();
755 jermar 159
 
160
    /*
161
     * Memory management subsystems initialization.
162
     */
26 jermar 163
    arch_pre_mm_init();
814 palkovsky 164
    /* Initialize at least 1 memory segment big enough for slab to work */
23 jermar 165
    frame_init();
789 palkovsky 166
    slab_cache_init();
756 jermar 167
    as_init();
23 jermar 168
    page_init();
169
    tlb_init();
814 palkovsky 170
    arch_post_mm_init();   
673 jermar 171
    version_print();
172
 
77 jermar 173
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
1 jermar 174
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
175
 
503 jermar 176
    arch_pre_smp_init();
34 jermar 177
    smp_init();
773 palkovsky 178
    /* Slab must be initialized AFTER we know the number of processors */
789 palkovsky 179
    slab_enable_cpucache();
773 palkovsky 180
 
149 jermar 181
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
27 jermar 182
    printf("config.cpu_count=%d\n", config.cpu_count);
1 jermar 183
    cpu_init();
860 decky 184
 
1 jermar 185
    calibrate_delay_loop();
186
    timeout_init();
187
    scheduler_init();
188
    task_init();
189
    thread_init();
628 decky 190
 
1037 decky 191
    count_t i;
192
    for (i = 0; i < init.cnt; i++)
193
        printf("init[%d].addr=%P, init[%d].size=%d\n", i, init.tasks[i].addr, i, init.tasks[i].size);
955 palkovsky 194
 
195
    ipc_init();
1 jermar 196
    /*
197
     * Create kernel task.
198
     */
756 jermar 199
    k = task_create(AS_KERNEL);
210 decky 200
    if (!k)
201
        panic("can't create kernel task\n");
860 decky 202
 
1 jermar 203
    /*
204
     * Create the first thread.
205
     */
206
    t = thread_create(kinit, NULL, k, 0);
210 decky 207
    if (!t)
208
        panic("can't create kinit thread\n");
1 jermar 209
    thread_ready(t);
860 decky 210
 
1 jermar 211
    /*
212
     * This call to scheduler() will return to kinit,
213
     * starting the thread of kernel threads.
214
     */
215
    scheduler();
216
    /* not reached */
217
}
218
 
108 decky 219
 
458 decky 220
#ifdef CONFIG_SMP
108 decky 221
/** Application CPUs main kernel routine
222
 *
223
 * Executed by application processors, temporary stack
224
 * is at ctx.sp which was set during BP boot.
675 jermar 225
 * This function passes control directly to
226
 * main_ap_separated_stack().
108 decky 227
 *
413 jermar 228
 * Assuming interrupts_disable()'d.
108 decky 229
 *
1 jermar 230
 */
231
void main_ap(void)
232
{
233
    /*
234
     * Incrementing the active CPU counter will guarantee that the
235
     * pm_init() will not attempt to build GDT and IDT tables again.
236
     * Neither frame_init() will do the complete thing. Neither cpu_init()
237
     * will do.
238
     */
239
    config.cpu_active++;
240
 
192 jermar 241
    /*
242
     * The THE structure is well defined because ctx.sp is used as stack.
243
     */
244
    the_initialize(THE);
298 decky 245
 
26 jermar 246
    arch_pre_mm_init();
1 jermar 247
    frame_init();
248
    page_init();
389 jermar 249
    tlb_init();
26 jermar 250
    arch_post_mm_init();
298 decky 251
 
1 jermar 252
    cpu_init();
298 decky 253
 
1 jermar 254
    calibrate_delay_loop();
255
 
256
    l_apic_init();
257
    l_apic_debug();
258
 
192 jermar 259
    the_copy(THE, (the_t *) CPU->stack);
1 jermar 260
 
261
    /*
262
     * If we woke kmp up before we left the kernel stack, we could
263
     * collide with another CPU coming up. To prevent this, we
264
     * switch to this cpu's private stack prior to waking kmp up.
265
     */
414 jermar 266
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
47 jermar 267
    context_restore(&CPU->saved_context);
1 jermar 268
    /* not reached */
269
}
270
 
108 decky 271
 
272
/** Application CPUs main kernel routine stack wrapper
273
 *
274
 * Second part of main_ap().
275
 *
276
 */
1 jermar 277
void main_ap_separated_stack(void)
278
{
279
    /*
280
     * Configure timeouts for this cpu.
281
     */
282
    timeout_init();
283
 
284
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
285
    scheduler();
286
    /* not reached */
287
}
458 decky 288
#endif /* CONFIG_SMP */