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1 jermar 1
/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <arch/asm.h>
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#include <context.h>
1 jermar 31
#include <print.h>
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#include <panic.h>
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#include <debug.h>
1 jermar 34
#include <config.h>
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#include <time/clock.h>
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#include <proc/scheduler.h>
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#include <proc/thread.h>
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#include <proc/task.h>
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#include <main/kinit.h>
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#include <console/kconsole.h>
1 jermar 41
#include <cpu.h>
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#include <align.h>
578 palkovsky 43
#include <interrupt.h>
1 jermar 44
 
458 decky 45
#ifdef CONFIG_SMP
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#include <arch/smp/apic.h>
34 jermar 47
#include <arch/smp/mps.h>
458 decky 48
#endif /* CONFIG_SMP */
1 jermar 49
 
34 jermar 50
#include <smp/smp.h>
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146 cejka 52
#include <arch/mm/memory_init.h>
373 jermar 53
#include <mm/heap.h>
1 jermar 54
#include <mm/frame.h>
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#include <mm/page.h>
5 jermar 56
#include <mm/tlb.h>
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#include <mm/vm.h>
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1 jermar 59
#include <synch/waitq.h>
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210 decky 61
#include <arch/arch.h>
1 jermar 62
#include <arch.h>
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#include <arch/faddr.h>
1 jermar 64
 
106 jermar 65
#include <typedefs.h>
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462 decky 67
char *project = "SPARTAN kernel";
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char *copyright = "Copyright (C) 2001-2005 HelenOS project";
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char *release = RELEASE;
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char *name = NAME;
621 palkovsky 71
char *arch = ARCH;
561 decky 72
 
73
#ifdef REVISION
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    char *revision = ", revision " REVISION;
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#else
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    char *revision = "";
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#endif
1 jermar 78
 
561 decky 79
#ifdef TIMESTAMP
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    char *timestamp = " on " TIMESTAMP;
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#else
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    char *timestamp = "";
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#endif
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85
 
1 jermar 86
config_t config;
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context_t ctx;
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523 jermar 89
/**
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 * These 'hardcoded' variables will be intialized by
105 jermar 91
 * the linker or the low level assembler code with
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 * appropriate sizes and addresses.
1 jermar 93
 */
37 jermar 94
__address hardcoded_load_address = 0;
106 jermar 95
size_t hardcoded_ktext_size = 0;
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size_t hardcoded_kdata_size = 0;
1 jermar 97
 
506 decky 98
__address init_addr = 0;
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size_t init_size = 0;
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523 jermar 101
/**
180 jermar 102
 * Size of memory in bytes taken by kernel and heap.
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 */
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static size_t kernel_size;
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523 jermar 106
/**
369 jermar 107
 * Size of heap.
108
 */
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static size_t heap_size;
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402 jermar 111
 
523 jermar 112
/**
402 jermar 113
 * Extra space between heap and stack
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 * enforced by alignment requirements.
180 jermar 115
 */
116
static size_t heap_delta;
117
 
1 jermar 118
void main_bsp(void);
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void main_ap(void);
120
 
121
/*
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 * These two functions prevent stack from underflowing during the
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 * kernel boot phase when SP is set to the very top of the reserved
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 * space. The stack could get corrupted by a fooled compiler-generated
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 * pop sequence otherwise.
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 */
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static void main_bsp_separated_stack(void);
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static void main_ap_separated_stack(void);
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108 decky 130
/** Bootstrap CPU main kernel routine
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 *
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 * Initializes the kernel by bootstrap CPU.
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 *
413 jermar 134
 * Assuming interrupts_disable().
108 decky 135
 *
1 jermar 136
 */
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void main_bsp(void)
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{
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    config.cpu_count = 1;
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    config.cpu_active = 1;
369 jermar 141
    config.base = hardcoded_load_address;
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    config.memory_size = get_memory_size();
143
 
144
    heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);
564 jermar 145
    kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);
402 jermar 146
    heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);
210 decky 147
 
180 jermar 148
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
210 decky 149
 
47 jermar 150
    context_save(&ctx);
402 jermar 151
    early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);
180 jermar 152
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
47 jermar 153
    context_restore(&ctx);
1 jermar 154
    /* not reached */
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}
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108 decky 157
 
158
/** Bootstrap CPU main kernel routine stack wrapper
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 *
160
 * Second part of main_bsp().
161
 *
162
 */
174 jermar 163
void main_bsp_separated_stack(void)
164
{
1 jermar 165
    vm_t *m;
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    task_t *k;
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    thread_t *t;
207 decky 168
 
184 jermar 169
    the_initialize(THE);
235 decky 170
 
517 jermar 171
    /*
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     * kconsole data structures must be initialized very early
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     * because other subsystems will register their respective
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     * commands.
175
     */
176
    kconsole_init();
623 jermar 177
 
578 palkovsky 178
    /* Exception handler initialization, before architecture
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     * starts adding it's own handlers
180
     */
181
    exc_init();
517 jermar 182
 
26 jermar 183
    arch_pre_mm_init();
374 jermar 184
    early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);
23 jermar 185
    frame_init();
186
    page_init();
187
    tlb_init();
188
    arch_post_mm_init();
189
 
562 decky 190
    printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
77 jermar 191
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
1 jermar 192
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
193
 
503 jermar 194
    arch_pre_smp_init();
34 jermar 195
    smp_init();
149 jermar 196
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
27 jermar 197
    printf("config.cpu_count=%d\n", config.cpu_count);
1 jermar 198
 
199
    cpu_init();
220 vana 200
 
1 jermar 201
    calibrate_delay_loop();
210 decky 202
 
1 jermar 203
    timeout_init();
204
    scheduler_init();
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    task_init();
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    thread_init();
207
 
208
    /*
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     * Create kernel vm mapping.
210
     */
167 jermar 211
    m = vm_create(GET_PTL0_ADDRESS());
210 decky 212
    if (!m)
213
        panic("can't create kernel vm address space\n");
1 jermar 214
 
215
    /*
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     * Create kernel task.
217
     */
218
    k = task_create(m);
210 decky 219
    if (!k)
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        panic("can't create kernel task\n");
221
 
1 jermar 222
    /*
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     * Create the first thread.
224
     */
225
    t = thread_create(kinit, NULL, k, 0);
210 decky 226
    if (!t)
227
        panic("can't create kinit thread\n");
1 jermar 228
    thread_ready(t);
229
    /*
230
     * This call to scheduler() will return to kinit,
231
     * starting the thread of kernel threads.
232
     */
233
    scheduler();
234
    /* not reached */
235
}
236
 
108 decky 237
 
458 decky 238
#ifdef CONFIG_SMP
108 decky 239
/** Application CPUs main kernel routine
240
 *
241
 * Executed by application processors, temporary stack
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 * is at ctx.sp which was set during BP boot.
243
 *
413 jermar 244
 * Assuming interrupts_disable()'d.
108 decky 245
 *
1 jermar 246
 */
247
void main_ap(void)
248
{
249
    /*
250
     * Incrementing the active CPU counter will guarantee that the
251
     * pm_init() will not attempt to build GDT and IDT tables again.
252
     * Neither frame_init() will do the complete thing. Neither cpu_init()
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     * will do.
254
     */
255
    config.cpu_active++;
256
 
192 jermar 257
    /*
258
     * The THE structure is well defined because ctx.sp is used as stack.
259
     */
260
    the_initialize(THE);
298 decky 261
 
26 jermar 262
    arch_pre_mm_init();
1 jermar 263
    frame_init();
264
    page_init();
389 jermar 265
    tlb_init();
26 jermar 266
    arch_post_mm_init();
298 decky 267
 
1 jermar 268
    cpu_init();
298 decky 269
 
1 jermar 270
    calibrate_delay_loop();
271
 
272
    l_apic_init();
273
    l_apic_debug();
274
 
192 jermar 275
    the_copy(THE, (the_t *) CPU->stack);
1 jermar 276
 
277
    /*
278
     * If we woke kmp up before we left the kernel stack, we could
279
     * collide with another CPU coming up. To prevent this, we
280
     * switch to this cpu's private stack prior to waking kmp up.
281
     */
414 jermar 282
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
47 jermar 283
    context_restore(&CPU->saved_context);
1 jermar 284
    /* not reached */
285
}
286
 
108 decky 287
 
288
/** Application CPUs main kernel routine stack wrapper
289
 *
290
 * Second part of main_ap().
291
 *
292
 */
1 jermar 293
void main_ap_separated_stack(void)
294
{
295
    /*
296
     * Configure timeouts for this cpu.
297
     */
298
    timeout_init();
299
 
300
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
301
    scheduler();
302
    /* not reached */
303
}
458 decky 304
#endif /* CONFIG_SMP */