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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>
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#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>
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#include <cpu.h>
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#include <align.h>
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#include <interrupt.h>
1 jermar 44
 
458 decky 45
#ifdef CONFIG_SMP
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#include <arch/smp/apic.h>
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#include <arch/smp/mps.h>
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#endif /* CONFIG_SMP */
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34 jermar 50
#include <smp/smp.h>
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146 cejka 52
#include <arch/mm/memory_init.h>
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#include <mm/heap.h>
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#include <mm/frame.h>
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#include <mm/page.h>
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#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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#include <arch/arch.h>
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#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;
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#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
 
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#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
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 * the linker or the low level assembler code with
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 * appropriate sizes and addresses.
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 */
37 jermar 94
__address hardcoded_load_address = 0;
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size_t hardcoded_ktext_size = 0;
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size_t hardcoded_kdata_size = 0;
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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
 */
109
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);
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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);
625 palkovsky 128
#ifdef CONFIG_SMP
1 jermar 129
static void main_ap_separated_stack(void);
625 palkovsky 130
#endif
1 jermar 131
 
108 decky 132
/** Bootstrap CPU main kernel routine
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 *
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 * Initializes the kernel by bootstrap CPU.
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 *
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 * Assuming interrupts_disable().
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 *
1 jermar 138
 */
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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 143
    config.base = hardcoded_load_address;
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    config.memory_size = get_memory_size();
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    config.init_addr = init_addr;
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    config.init_size = init_size;
369 jermar 147
 
148
    heap_size = CONFIG_HEAP_SIZE + (config.memory_size/FRAME_SIZE)*sizeof(frame_t);
564 jermar 149
    kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size + heap_size, PAGE_SIZE);
402 jermar 150
    heap_delta = kernel_size - (hardcoded_ktext_size + hardcoded_kdata_size + heap_size);
210 decky 151
 
180 jermar 152
    config.kernel_size = kernel_size + CONFIG_STACK_SIZE;
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47 jermar 154
    context_save(&ctx);
402 jermar 155
    early_mapping(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_STACK_SIZE + heap_size + heap_delta);
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    context_set(&ctx, FADDR(main_bsp_separated_stack), config.base + kernel_size, CONFIG_STACK_SIZE);
47 jermar 157
    context_restore(&ctx);
1 jermar 158
    /* not reached */
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}
160
 
108 decky 161
 
162
/** Bootstrap CPU main kernel routine stack wrapper
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 *
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 * Second part of main_bsp().
165
 *
166
 */
174 jermar 167
void main_bsp_separated_stack(void)
168
{
1 jermar 169
    vm_t *m;
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    task_t *k;
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    thread_t *t;
207 decky 172
 
184 jermar 173
    the_initialize(THE);
235 decky 174
 
517 jermar 175
    /*
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     * kconsole data structures must be initialized very early
177
     * because other subsystems will register their respective
178
     * commands.
179
     */
180
    kconsole_init();
623 jermar 181
 
578 palkovsky 182
    /* Exception handler initialization, before architecture
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     * starts adding it's own handlers
184
     */
185
    exc_init();
517 jermar 186
 
26 jermar 187
    arch_pre_mm_init();
374 jermar 188
    early_heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, heap_size + heap_delta);
23 jermar 189
    frame_init();
190
    page_init();
191
    tlb_init();
192
    arch_post_mm_init();
193
 
562 decky 194
    printf("%s, release %s (%s)%s\nBuilt%s for %s\n%s\n", project, release, name, revision, timestamp, arch, copyright);
77 jermar 195
    printf("%P: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
1 jermar 196
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
197
 
503 jermar 198
    arch_pre_smp_init();
34 jermar 199
    smp_init();
149 jermar 200
    printf("config.memory_size=%dM\n", config.memory_size/(1024*1024));
27 jermar 201
    printf("config.cpu_count=%d\n", config.cpu_count);
1 jermar 202
 
203
    cpu_init();
220 vana 204
 
1 jermar 205
    calibrate_delay_loop();
640 jermar 206
 
1 jermar 207
    timeout_init();
208
    scheduler_init();
209
    task_init();
210
    thread_init();
628 decky 211
 
212
    if (config.init_size > 0)
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        printf("config.init_addr=%X, config.init_size=%d\n", config.init_addr, config.init_size);
1 jermar 214
 
215
    /*
216
     * Create kernel vm mapping.
217
     */
167 jermar 218
    m = vm_create(GET_PTL0_ADDRESS());
210 decky 219
    if (!m)
220
        panic("can't create kernel vm address space\n");
1 jermar 221
 
222
    /*
223
     * Create kernel task.
224
     */
225
    k = task_create(m);
210 decky 226
    if (!k)
227
        panic("can't create kernel task\n");
228
 
1 jermar 229
    /*
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     * Create the first thread.
231
     */
232
    t = thread_create(kinit, NULL, k, 0);
210 decky 233
    if (!t)
234
        panic("can't create kinit thread\n");
1 jermar 235
    thread_ready(t);
236
    /*
237
     * This call to scheduler() will return to kinit,
238
     * starting the thread of kernel threads.
239
     */
240
    scheduler();
241
    /* not reached */
242
}
243
 
108 decky 244
 
458 decky 245
#ifdef CONFIG_SMP
108 decky 246
/** Application CPUs main kernel routine
247
 *
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 * Executed by application processors, temporary stack
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 * is at ctx.sp which was set during BP boot.
250
 *
413 jermar 251
 * Assuming interrupts_disable()'d.
108 decky 252
 *
1 jermar 253
 */
254
void main_ap(void)
255
{
256
    /*
257
     * Incrementing the active CPU counter will guarantee that the
258
     * pm_init() will not attempt to build GDT and IDT tables again.
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     * Neither frame_init() will do the complete thing. Neither cpu_init()
260
     * will do.
261
     */
262
    config.cpu_active++;
263
 
192 jermar 264
    /*
265
     * The THE structure is well defined because ctx.sp is used as stack.
266
     */
267
    the_initialize(THE);
298 decky 268
 
26 jermar 269
    arch_pre_mm_init();
1 jermar 270
    frame_init();
271
    page_init();
389 jermar 272
    tlb_init();
26 jermar 273
    arch_post_mm_init();
298 decky 274
 
1 jermar 275
    cpu_init();
298 decky 276
 
1 jermar 277
    calibrate_delay_loop();
278
 
279
    l_apic_init();
280
    l_apic_debug();
281
 
192 jermar 282
    the_copy(THE, (the_t *) CPU->stack);
1 jermar 283
 
284
    /*
285
     * If we woke kmp up before we left the kernel stack, we could
286
     * collide with another CPU coming up. To prevent this, we
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     * switch to this cpu's private stack prior to waking kmp up.
288
     */
414 jermar 289
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (__address) CPU->stack, CPU_STACK_SIZE);
47 jermar 290
    context_restore(&CPU->saved_context);
1 jermar 291
    /* not reached */
292
}
293
 
108 decky 294
 
295
/** Application CPUs main kernel routine stack wrapper
296
 *
297
 * Second part of main_ap().
298
 *
299
 */
1 jermar 300
void main_ap_separated_stack(void)
301
{
302
    /*
303
     * Configure timeouts for this cpu.
304
     */
305
    timeout_init();
306
 
307
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
308
    scheduler();
309
    /* not reached */
310
}
458 decky 311
#endif /* CONFIG_SMP */