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/*
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/*
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * Copyright (C) 2001-2004 Jakub Jermar
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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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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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 *
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 *
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 * - Redistributions of source code must retain the above copyright
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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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 *   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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 * - 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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 *   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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 *   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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 * - 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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 *   derived from this software without specific prior written permission.
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 *
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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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * (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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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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#include <arch/asm.h>
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#include <arch/asm.h>
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#include <arch/context.h>
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#include <arch/context.h>
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#include <print.h>
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#include <print.h>
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#include <panic.h>
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#include <panic.h>
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#include <config.h>
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#include <config.h>
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#include <time/clock.h>
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#include <time/clock.h>
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#include <proc/scheduler.h>
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#include <proc/scheduler.h>
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#include <proc/thread.h>
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#include <proc/thread.h>
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#include <proc/task.h>
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#include <proc/task.h>
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#include <mm/vm.h>
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#include <mm/vm.h>
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#include <main/kinit.h>
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#include <main/kinit.h>
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#include <cpu.h>
40
#include <cpu.h>
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#include <mm/heap.h>
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#include <mm/heap.h>
42
 
42
 
43
#ifdef __SMP__
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#ifdef __SMP__
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#include <arch/smp/apic.h>
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#include <arch/smp/apic.h>
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#include <arch/smp/mps.h>
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#include <arch/smp/mps.h>
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#endif /* __SMP__ */
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#endif /* __SMP__ */
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47
 
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#include <smp/smp.h>
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#include <smp/smp.h>
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49
 
50
#include <mm/frame.h>
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#include <mm/frame.h>
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#include <mm/page.h>
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#include <mm/page.h>
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#include <mm/tlb.h>
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#include <mm/tlb.h>
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#include <synch/waitq.h>
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#include <synch/waitq.h>
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54
 
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#include <arch.h>
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#include <arch.h>
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56
 
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char *project = "SPARTAN kernel";
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char *project = "SPARTAN kernel";
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char *copyright = "Copyright (C) 2001-2005 Jakub Jermar";
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char *copyright = "Copyright (C) 2001-2005 Jakub Jermar, Copyright (C) 2005 HelenOS project";
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59
 
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config_t config;
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config_t config;
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context_t ctx;
61
context_t ctx;
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62
 
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/*
63
/*
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 * These 'hardcoded' variables will be intialised by
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 * These 'hardcoded' variables will be intialised by
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 * the linker with appropriate sizes and addresses.
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 * the linker with appropriate sizes and addresses.
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 */
66
 */
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__address hardcoded_load_address = 0;
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__address hardcoded_load_address = 0;
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__u32 hardcoded_ktext_size = 0;
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__u32 hardcoded_ktext_size = 0;
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__u32 hardcoded_kdata_size = 0;
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__u32 hardcoded_kdata_size = 0;
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70
 
71
void main_bsp(void);
71
void main_bsp(void);
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void main_ap(void);
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void main_ap(void);
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73
 
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/*
74
/*
75
 * These two functions prevent stack from underflowing during the
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 * These two functions prevent stack from underflowing during the
76
 * kernel boot phase when SP is set to the very top of the reserved
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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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 * space. The stack could get corrupted by a fooled compiler-generated
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 * pop sequence otherwise.
78
 * pop sequence otherwise.
79
 */
79
 */
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static void main_bsp_separated_stack(void);
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static void main_bsp_separated_stack(void);
81
static void main_ap_separated_stack(void);
81
static void main_ap_separated_stack(void);
82
 
82
 
83
/*
83
/*
84
 * Executed by the bootstrap processor. cpu_priority_high()'d
84
 * Executed by the bootstrap processor. cpu_priority_high()'d
85
 */
85
 */
86
void main_bsp(void)
86
void main_bsp(void)
87
{
87
{
88
    config.cpu_count = 1;
88
    config.cpu_count = 1;
89
    config.cpu_active = 1;
89
    config.cpu_active = 1;
90
 
90
 
91
    config.base = hardcoded_load_address;
91
    config.base = hardcoded_load_address;
92
    config.memory_size = CONFIG_MEMORY_SIZE;
92
    config.memory_size = CONFIG_MEMORY_SIZE;
93
    config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;
93
    config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;
94
 
94
 
95
    context_save(&ctx);
95
    context_save(&ctx);
96
    ctx.sp = config.base + config.kernel_size - 8;
96
    ctx.sp = config.base + config.kernel_size - 8;
97
    ctx.pc = (__address) main_bsp_separated_stack;
97
    ctx.pc = (__address) main_bsp_separated_stack;
98
    context_restore(&ctx);
98
    context_restore(&ctx);
99
    /* not reached */
99
    /* not reached */
100
}
100
}
101
 
101
 
102
void main_bsp_separated_stack(void) {
102
void main_bsp_separated_stack(void) {
103
    vm_t *m;
103
    vm_t *m;
104
    task_t *k;
104
    task_t *k;
105
    thread_t *t;
105
    thread_t *t;
106
 
106
 
107
    arch_pre_mm_init();
107
    arch_pre_mm_init();
108
 
108
 
109
    heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);
109
    heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);
110
    frame_init();
110
    frame_init();
111
    page_init();
111
    page_init();
112
    tlb_init();
112
    tlb_init();
113
 
113
 
114
    arch_post_mm_init();
114
    arch_post_mm_init();
115
 
115
 
116
    printf("%s, %s\n", project, copyright);
116
    printf("%s\n%s\n", project, copyright);
117
 
117
 
118
    printf("%L: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
118
    printf("%L: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
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        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
119
        config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
120
 
120
 
121
    arch_late_init();
121
    arch_late_init();
122
   
122
   
123
    smp_init();
123
    smp_init();
124
    printf("config.cpu_count=%d\n", config.cpu_count);
124
    printf("config.cpu_count=%d\n", config.cpu_count);
125
 
125
 
126
    cpu_init();
126
    cpu_init();
127
    calibrate_delay_loop();
127
    calibrate_delay_loop();
128
 
128
 
129
    timeout_init();
129
    timeout_init();
130
    scheduler_init();
130
    scheduler_init();
131
    task_init();
131
    task_init();
132
    thread_init();
132
    thread_init();
133
 
133
 
134
    /*
134
    /*
135
     * Create kernel vm mapping.
135
     * Create kernel vm mapping.
136
     */
136
     */
137
    m = vm_create();
137
    m = vm_create();
138
    if (!m) panic("can't create kernel vm address space\n");
138
    if (!m) panic("can't create kernel vm address space\n");
139
 
139
 
140
    /*
140
    /*
141
     * Create kernel task.
141
     * Create kernel task.
142
     */
142
     */
143
    k = task_create(m);
143
    k = task_create(m);
144
    if (!k) panic("can't create kernel task\n");
144
    if (!k) panic("can't create kernel task\n");
145
 
145
 
146
    /*
146
    /*
147
     * Create the first thread.
147
     * Create the first thread.
148
     */
148
     */
149
    t = thread_create(kinit, NULL, k, 0);
149
    t = thread_create(kinit, NULL, k, 0);
150
    if (!t) panic("can't create kinit thread\n");
150
    if (!t) panic("can't create kinit thread\n");
151
 
151
 
152
    thread_ready(t);
152
    thread_ready(t);
153
 
153
 
154
    /*
154
    /*
155
     * This call to scheduler() will return to kinit,
155
     * This call to scheduler() will return to kinit,
156
     * starting the thread of kernel threads.
156
     * starting the thread of kernel threads.
157
     */
157
     */
158
    scheduler();
158
    scheduler();
159
    /* not reached */
159
    /* not reached */
160
}
160
}
161
 
161
 
162
#ifdef __SMP__
162
#ifdef __SMP__
163
/*
163
/*
164
 * Executed by application processors. cpu_priority_high()'d
164
 * Executed by application processors. cpu_priority_high()'d
165
 * Temporary stack is at ctx.sp which was set during BP boot.
165
 * Temporary stack is at ctx.sp which was set during BP boot.
166
 */
166
 */
167
void main_ap(void)
167
void main_ap(void)
168
{
168
{
169
    /*
169
    /*
170
     * Incrementing the active CPU counter will guarantee that the
170
     * Incrementing the active CPU counter will guarantee that the
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     * pm_init() will not attempt to build GDT and IDT tables again.
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     * pm_init() will not attempt to build GDT and IDT tables again.
172
     * Neither frame_init() will do the complete thing. Neither cpu_init()
172
     * Neither frame_init() will do the complete thing. Neither cpu_init()
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     * will do.
173
     * will do.
174
     */
174
     */
175
    config.cpu_active++;
175
    config.cpu_active++;
176
 
176
 
177
    arch_pre_mm_init();
177
    arch_pre_mm_init();
178
    frame_init();
178
    frame_init();
179
    page_init();
179
    page_init();
180
    arch_post_mm_init();
180
    arch_post_mm_init();
181
 
181
 
182
    cpu_init();
182
    cpu_init();
183
    calibrate_delay_loop();
183
    calibrate_delay_loop();
184
 
184
 
185
    l_apic_init();
185
    l_apic_init();
186
    l_apic_debug();
186
    l_apic_debug();
187
 
187
 
188
 
188
 
189
    /*
189
    /*
190
     * If we woke kmp up before we left the kernel stack, we could
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
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     * 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.
192
     * switch to this cpu's private stack prior to waking kmp up.
193
     */
193
     */
194
    CPU->saved_context.sp = (__address) &CPU->stack[CPU_STACK_SIZE-8];
194
    CPU->saved_context.sp = (__address) &CPU->stack[CPU_STACK_SIZE-8];
195
    CPU->saved_context.pc = (__address) main_ap_separated_stack;
195
    CPU->saved_context.pc = (__address) main_ap_separated_stack;
196
    context_restore(&CPU->saved_context);
196
    context_restore(&CPU->saved_context);
197
    /* not reached */
197
    /* not reached */
198
}
198
}
199
 
199
 
200
void main_ap_separated_stack(void)
200
void main_ap_separated_stack(void)
201
{
201
{
202
    /*
202
    /*
203
     * Configure timeouts for this cpu.
203
     * Configure timeouts for this cpu.
204
     */
204
     */
205
    timeout_init();
205
    timeout_init();
206
 
206
 
207
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
207
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
208
    scheduler();
208
    scheduler();
209
    /* not reached */
209
    /* not reached */
210
}
210
}
211
#endif /* __SMP__*/
211
#endif /* __SMP__*/
212
 
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