Subversion Repositories HelenOS

Rev

Rev 727 | Rev 756 | 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>
373 jermar 46
#include <mm/heap.h>
1 jermar 47
#include <mm/frame.h>
48
#include <mm/page.h>
684 jermar 49
#include <genarch/mm/page_pt.h>
5 jermar 50
#include <mm/tlb.h>
703 jermar 51
#include <mm/as.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>
57
 
675 jermar 58
#ifdef CONFIG_SMP
59
#include <arch/smp/apic.h>
60
#include <arch/smp/mps.h>
61
#endif /* CONFIG_SMP */
62
#include <smp/smp.h>
63
 
64
config_t config;    /**< Global configuration structure. */
65
 
1 jermar 66
context_t ctx;
67
 
523 jermar 68
/**
69
 * These 'hardcoded' variables will be intialized by
105 jermar 70
 * the linker or the low level assembler code with
71
 * appropriate sizes and addresses.
1 jermar 72
 */
37 jermar 73
__address hardcoded_load_address = 0;
106 jermar 74
size_t hardcoded_ktext_size = 0;
75
size_t hardcoded_kdata_size = 0;
1 jermar 76
 
506 decky 77
__address init_addr = 0;
78
size_t init_size = 0;
79
 
755 jermar 80
/** Kernel address space. */
81
as_t *AS_KERNEL = NULL;
82
 
1 jermar 83
void main_bsp(void);
84
void main_ap(void);
85
 
86
/*
87
 * These two functions prevent stack from underflowing during the
88
 * kernel boot phase when SP is set to the very top of the reserved
89
 * space. The stack could get corrupted by a fooled compiler-generated
90
 * pop sequence otherwise.
91
 */
92
static void main_bsp_separated_stack(void);
625 palkovsky 93
#ifdef CONFIG_SMP
1 jermar 94
static void main_ap_separated_stack(void);
625 palkovsky 95
#endif
1 jermar 96
 
108 decky 97
/** Bootstrap CPU main kernel routine
98
 *
99
 * Initializes the kernel by bootstrap CPU.
675 jermar 100
 * This function passes control directly to
101
 * main_bsp_separated_stack().
108 decky 102
 *
413 jermar 103
 * Assuming interrupts_disable().
108 decky 104
 *
1 jermar 105
 */
106
void main_bsp(void)
107
{
108
    config.cpu_count = 1;
109
    config.cpu_active = 1;
651 decky 110
 
369 jermar 111
    config.base = hardcoded_load_address;
112
    config.memory_size = get_memory_size();
628 decky 113
    config.init_addr = init_addr;
114
    config.init_size = init_size;
210 decky 115
 
651 decky 116
    if (init_size > 0)
117
        config.heap_addr = init_addr + init_size;
118
    else
119
        config.heap_addr = hardcoded_load_address + hardcoded_ktext_size + hardcoded_kdata_size;
210 decky 120
 
651 decky 121
    config.heap_size = CONFIG_HEAP_SIZE + (config.memory_size / FRAME_SIZE) * sizeof(frame_t);
122
 
123
    config.kernel_size = ALIGN_UP(config.heap_addr - hardcoded_load_address + config.heap_size, PAGE_SIZE);
124
    config.heap_delta = config.kernel_size - (config.heap_addr - hardcoded_load_address + config.heap_size);
125
    config.kernel_size = config.kernel_size + CONFIG_STACK_SIZE;
126
 
47 jermar 127
    context_save(&ctx);
724 palkovsky 128
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + config.kernel_size - CONFIG_STACK_SIZE, CONFIG_STACK_SIZE);
47 jermar 129
    context_restore(&ctx);
1 jermar 130
    /* not reached */
131
}
132
 
108 decky 133
 
134
/** Bootstrap CPU main kernel routine stack wrapper
135
 *
136
 * Second part of main_bsp().
137
 *
138
 */
174 jermar 139
void main_bsp_separated_stack(void)
140
{
703 jermar 141
    as_t *as;
1 jermar 142
    task_t *k;
143
    thread_t *t;
207 decky 144
 
184 jermar 145
    the_initialize(THE);
235 decky 146
 
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();
623 jermar 153
 
578 palkovsky 154
    /* Exception handler initialization, before architecture
673 jermar 155
     * starts adding its own handlers
578 palkovsky 156
     */
157
    exc_init();
755 jermar 158
 
159
    /*
160
     * Memory management subsystems initialization.
161
     */
26 jermar 162
    arch_pre_mm_init();
651 decky 163
    early_heap_init(config.heap_addr, config.heap_size + config.heap_delta);
23 jermar 164
    frame_init();
165
    page_init();
166
    tlb_init();
167
    arch_post_mm_init();
673 jermar 168
 
169
    version_print();
170
 
77 jermar 171
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
1 jermar 172
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
173
 
503 jermar 174
    arch_pre_smp_init();
34 jermar 175
    smp_init();
149 jermar 176
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
27 jermar 177
    printf("config.cpu_count=%d\n", config.cpu_count);
1 jermar 178
 
179
    cpu_init();
220 vana 180
 
1 jermar 181
    calibrate_delay_loop();
640 jermar 182
 
1 jermar 183
    timeout_init();
184
    scheduler_init();
185
    task_init();
186
    thread_init();
628 decky 187
 
188
    if (config.init_size > 0)
189
        printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size);
1 jermar 190
 
191
    /*
703 jermar 192
     * Create kernel address space.
1 jermar 193
     */
755 jermar 194
    as = as_create(GET_PTL0_ADDRESS(), FLAG_AS_KERNEL);
703 jermar 195
    if (!as)
196
        panic("can't create kernel address space\n");
1 jermar 197
 
198
    /*
199
     * Create kernel task.
200
     */
703 jermar 201
    k = task_create(as);
210 decky 202
    if (!k)
203
        panic("can't create kernel task\n");
204
 
1 jermar 205
    /*
206
     * Create the first thread.
207
     */
208
    t = thread_create(kinit, NULL, k, 0);
210 decky 209
    if (!t)
210
        panic("can't create kinit thread\n");
1 jermar 211
    thread_ready(t);
675 jermar 212
 
1 jermar 213
    /*
214
     * This call to scheduler() will return to kinit,
215
     * starting the thread of kernel threads.
216
     */
217
    scheduler();
218
    /* not reached */
219
}
220
 
108 decky 221
 
458 decky 222
#ifdef CONFIG_SMP
108 decky 223
/** Application CPUs main kernel routine
224
 *
225
 * Executed by application processors, temporary stack
226
 * is at ctx.sp which was set during BP boot.
675 jermar 227
 * This function passes control directly to
228
 * main_ap_separated_stack().
108 decky 229
 *
413 jermar 230
 * Assuming interrupts_disable()'d.
108 decky 231
 *
1 jermar 232
 */
233
void main_ap(void)
234
{
235
    /*
236
     * Incrementing the active CPU counter will guarantee that the
237
     * pm_init() will not attempt to build GDT and IDT tables again.
238
     * Neither frame_init() will do the complete thing. Neither cpu_init()
239
     * will do.
240
     */
241
    config.cpu_active++;
242
 
192 jermar 243
    /*
244
     * The THE structure is well defined because ctx.sp is used as stack.
245
     */
246
    the_initialize(THE);
298 decky 247
 
26 jermar 248
    arch_pre_mm_init();
1 jermar 249
    frame_init();
250
    page_init();
389 jermar 251
    tlb_init();
26 jermar 252
    arch_post_mm_init();
298 decky 253
 
1 jermar 254
    cpu_init();
298 decky 255
 
1 jermar 256
    calibrate_delay_loop();
257
 
258
    l_apic_init();
259
    l_apic_debug();
260
 
192 jermar 261
    the_copy(THE, (the_t *) CPU->stack);
1 jermar 262
 
263
    /*
264
     * If we woke kmp up before we left the kernel stack, we could
265
     * collide with another CPU coming up. To prevent this, we
266
     * switch to this cpu's private stack prior to waking kmp up.
267
     */
414 jermar 268
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
47 jermar 269
    context_restore(&CPU->saved_context);
1 jermar 270
    /* not reached */
271
}
272
 
108 decky 273
 
274
/** Application CPUs main kernel routine stack wrapper
275
 *
276
 * Second part of main_ap().
277
 *
278
 */
1 jermar 279
void main_ap_separated_stack(void)
280
{
281
    /*
282
     * Configure timeouts for this cpu.
283
     */
284
    timeout_init();
285
 
286
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
287
    scheduler();
288
    /* not reached */
289
}
458 decky 290
#endif /* CONFIG_SMP */