WebSVN – HelenOS – Diff – /trunk/kernel/generic/src/main/main.c


/*
 * Copyright (c) 2001-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup main
 * @{
 */
 
/**
 * @file
 * @brief   Main initialization kernel function for all processors.
 *
 * During kernel boot, all processors, after architecture dependent
 * initialization, start executing code found in this file. After
 * bringing up all subsystems, control is passed to scheduler().
 *
 * The bootstrap processor starts executing main_bsp() while
 * the application processors start executing main_ap().
 *
 * @see scheduler()
 * @see main_bsp()
 * @see main_ap()
 */
 
#include <arch/asm.h>
#include <context.h>
#include <print.h>
#include <panic.h>
#include <debug.h>
#include <config.h>
#include <time/clock.h>
#include <time/timeout.h>
#include <proc/scheduler.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <proc/tasklet.h>
#include <main/kinit.h>
#include <main/version.h>
#include <console/kconsole.h>
#include <cpu.h>
#include <align.h>
#include <interrupt.h>
#include <mm/frame.h>
#include <mm/page.h>
#include <genarch/mm/page_pt.h>
#include <mm/tlb.h>
#include <mm/as.h>
#include <mm/slab.h>
#include <synch/waitq.h>
#include <synch/futex.h>
#include <arch/arch.h>
#include <arch.h>
#include <arch/faddr.h>
#include <ipc/ipc.h>
#include <macros.h>
#include <adt/btree.h>
#include <smp/smp.h>
#include <ddi/ddi.h>
#include <console/console.h>
 
/** Global configuration structure. */
config_t config;
 
/** Initial user-space tasks */
init_t init = {
    .cnt = 0
};
 
/** Boot allocations. */
ballocs_t ballocs = {
    .base = NULL,
    .size = 0
};
 
context_t ctx;
 
/*
 * These 'hardcoded' variables will be intialized by
 * the linker or the low level assembler code with
 * appropriate sizes and addresses.
 */
 
/**< Virtual address of where the kernel is loaded. */
uintptr_t hardcoded_load_address = 0;
/**< Size of the kernel code in bytes. */
size_t hardcoded_ktext_size = 0;
/**< Size of the kernel data in bytes. */
size_t hardcoded_kdata_size = 0;
/**< Lowest safe stack virtual address. */
uintptr_t stack_safe = 0;      
 
void main_bsp(void);
void main_ap(void);
 
/*
 * These two functions prevent stack from underflowing during the
 * kernel boot phase when SP is set to the very top of the reserved
 * space. The stack could get corrupted by a fooled compiler-generated
 * pop sequence otherwise.
 */
static void main_bsp_separated_stack(void);
#ifdef CONFIG_SMP
static void main_ap_separated_stack(void);
#endif
 
#define CONFIG_STACK_SIZE   ((1 << STACK_FRAMES) * STACK_SIZE)
 
/** Main kernel routine for bootstrap CPU.
 *
 * Initializes the kernel by bootstrap CPU.
 * This function passes control directly to
 * main_bsp_separated_stack().
 *
 * Assuming interrupts_disable().
 *
 */
void main_bsp(void)
{
    LOG();
   
    config.cpu_count = 1;
    config.cpu_active = 1;
   
    config.base = hardcoded_load_address;
    config.kernel_size = ALIGN_UP(hardcoded_ktext_size +
        hardcoded_kdata_size, PAGE_SIZE);
    config.stack_size = CONFIG_STACK_SIZE;
   
    /* Initialy the stack is placed just after the kernel */
    config.stack_base = config.base + config.kernel_size;
   
    /* Avoid placing stack on top of init */
    count_t i;
    for (i = 0; i < init.cnt; i++) {
        if (PA_overlaps(config.stack_base, config.stack_size,
            init.tasks[i].addr, init.tasks[i].size))
            config.stack_base = ALIGN_UP(init.tasks[i].addr +
                init.tasks[i].size, config.stack_size);
    }
 
    /* Avoid placing stack on top of boot allocations. */
    if (ballocs.size) {
        if (PA_overlaps(config.stack_base, config.stack_size,
            ballocs.base, ballocs.size))
            config.stack_base = ALIGN_UP(ballocs.base +
                ballocs.size, PAGE_SIZE);
    }
   
    if (config.stack_base < stack_safe)
        config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);
   
    version_print();
   
    LOG("\nconfig.base=%#" PRIp " config.kernel_size=%" PRIs
        "\nconfig.stack_base=%#" PRIp " config.stack_size=%" PRIs,
        config.base, config.kernel_size,
        config.stack_base, config.stack_size);
   
    context_save(&ctx);
    context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base,
        THREAD_STACK_SIZE);
    context_restore(&ctx);
    /* not reached */
}
 
 
/** Main kernel routine for bootstrap CPU using new stack.
 *
 * Second part of main_bsp().
 *
 */
void main_bsp_separated_stack(void)
{
    LOG();
   
    the_initialize(THE);
 
    /*
     * kconsole data structures must be initialized very early
     * because other subsystems will register their respective
     * commands.
     */
    LOG_EXEC(kconsole_init());
   
    /*
     * Exception handler initialization, before architecture
     * starts adding its own handlers
     */
    LOG_EXEC(exc_init());
 
    /*
     * Memory management subsystems initialization.
     */
    LOG_EXEC(arch_pre_mm_init());
    LOG_EXEC(frame_init());
   
    /* Initialize at least 1 memory segment big enough for slab to work. */
    LOG_EXEC(slab_cache_init());
    LOG_EXEC(btree_init());
    LOG_EXEC(as_init());
    LOG_EXEC(page_init());
    LOG_EXEC(tlb_init());
    LOG_EXEC(ddi_init());
    LOG_EXEC(tasklet_init());
    LOG_EXEC(arch_post_mm_init());
    LOG_EXEC(arch_pre_smp_init());
    LOG_EXEC(smp_init());
   
    /* Slab must be initialized after we know the number of processors. */
    LOG_EXEC(slab_enable_cpucache());
   
    printf("Detected %" PRIc " CPU(s), %" PRIu64" MB free memory\n",
        config.cpu_count, SIZE2MB(zone_total_size()));
   
    LOG_EXEC(cpu_init());
   
    LOG_EXEC(calibrate_delay_loop());
    LOG_EXEC(clock_counter_init());
    LOG_EXEC(timeout_init());
    LOG_EXEC(scheduler_init());
    LOG_EXEC(task_init());
    LOG_EXEC(thread_init());
    LOG_EXEC(futex_init());
   
    if (init.cnt > 0) {
        count_t i;
        for (i = 0; i < init.cnt; i++)
            printf("init[%" PRIc "].addr=%#" PRIp
                ", init[%" PRIc "].size=%#" PRIs "\n",
                i, init.tasks[i].addr,
                i, init.tasks[i].size);
    } else
        printf("No init binaries found\n");
   
    LOG_EXEC(ipc_init());
    LOG_EXEC(klog_init());
 
    /*
     * Create kernel task.
     */
    task_t *kernel = task_create(AS_KERNEL, "kernel");
    if (!kernel)
        panic("Can't create kernel task\n");
   
    /*
     * Create the first thread.
     */
    thread_t *kinit_thread = thread_create(kinit, NULL, kernel, 0, "kinit", true);
    if (!kinit_thread)
        panic("Can't create kinit thread\n");
    LOG_EXEC(thread_ready(kinit_thread));
   
    /*
     * This call to scheduler() will return to kinit,
     * starting the thread of kernel threads.
     */
    scheduler();
    /* not reached */
}
 
 
#ifdef CONFIG_SMP
/** Main kernel routine for application CPUs.
 *
 * Executed by application processors, temporary stack
 * is at ctx.sp which was set during BSP boot.
 * This function passes control directly to
 * main_ap_separated_stack().
 *
 * Assuming interrupts_disable()'d.
 *
 */
void main_ap(void)
{
    /*
     * Incrementing the active CPU counter will guarantee that the
     * *_init() functions can find out that they need to
     * do initialization for AP only.
     */
    config.cpu_active++;
 
    /*
     * The THE structure is well defined because ctx.sp is used as stack.
     */
    the_initialize(THE);
   
    arch_pre_mm_init();
    frame_init();
    page_init();
    tlb_init();
    arch_post_mm_init();
   
    cpu_init();
    calibrate_delay_loop();
    arch_post_cpu_init();
 
    the_copy(THE, (the_t *) CPU->stack);
 
    /*
     * If we woke kmp up before we left the kernel stack, we could
     * collide with another CPU coming up. To prevent this, we
     * switch to this cpu's private stack prior to waking kmp up.
     */
    context_set(&CPU->saved_context, FADDR(main_ap_separated_stack),
        (uintptr_t) CPU->stack, CPU_STACK_SIZE);
    context_restore(&CPU->saved_context);
    /* not reached */
}
 
 
/** Main kernel routine for application CPUs using new stack.
 *
 * Second part of main_ap().
 *
 */
void main_ap_separated_stack(void)
{
    /*
     * Configure timeouts for this cpu.
     */
    timeout_init();
 
    waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
    scheduler();
    /* not reached */
}
#endif /* CONFIG_SMP */
 
/** @}
 */
 

Rev 3061	Rev 3097
1	/*	1	/*
2	* Copyright (c) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup main	29	/** @addtogroup main
30	* @{	30	* @{
31	*/	31	*/
32		32
33	/**	33	/**
34	* @file	34	* @file
35	* @brief Main initialization kernel function for all processors.	35	* @brief Main initialization kernel function for all processors.
36	*	36	*
37	* During kernel boot, all processors, after architecture dependent	37	* During kernel boot, all processors, after architecture dependent
38	* initialization, start executing code found in this file. After	38	* initialization, start executing code found in this file. After
39	* bringing up all subsystems, control is passed to scheduler().	39	* bringing up all subsystems, control is passed to scheduler().
40	*	40	*
41	* The bootstrap processor starts executing main_bsp() while	41	* The bootstrap processor starts executing main_bsp() while
42	* the application processors start executing main_ap().	42	* the application processors start executing main_ap().
43	*	43	*
44	* @see scheduler()	44	* @see scheduler()
45	* @see main_bsp()	45	* @see main_bsp()
46	* @see main_ap()	46	* @see main_ap()
47	*/	47	*/
48		48
49	#include <arch/asm.h>	49	#include <arch/asm.h>
50	#include <context.h>	50	#include <context.h>
51	#include <print.h>	51	#include <print.h>
52	#include <panic.h>	52	#include <panic.h>
53	#include <debug.h>	53	#include <debug.h>
54	#include <config.h>	54	#include <config.h>
55	#include <time/clock.h>	55	#include <time/clock.h>
56	#include <time/timeout.h>	56	#include <time/timeout.h>
57	#include <proc/scheduler.h>	57	#include <proc/scheduler.h>
58	#include <proc/thread.h>	58	#include <proc/thread.h>
59	#include <proc/task.h>	59	#include <proc/task.h>
60	#include <proc/tasklet.h>	60	#include <proc/tasklet.h>
61	#include <main/kinit.h>	61	#include <main/kinit.h>
62	#include <main/version.h>	62	#include <main/version.h>
63	#include <console/kconsole.h>	63	#include <console/kconsole.h>
64	#include <cpu.h>	64	#include <cpu.h>
65	#include <align.h>	65	#include <align.h>
66	#include <interrupt.h>	66	#include <interrupt.h>
67	#include <mm/frame.h>	67	#include <mm/frame.h>
68	#include <mm/page.h>	68	#include <mm/page.h>
69	#include <genarch/mm/page_pt.h>	69	#include <genarch/mm/page_pt.h>
70	#include <mm/tlb.h>	70	#include <mm/tlb.h>
71	#include <mm/as.h>	71	#include <mm/as.h>
72	#include <mm/slab.h>	72	#include <mm/slab.h>
73	#include <synch/waitq.h>	73	#include <synch/waitq.h>
74	#include <synch/futex.h>	74	#include <synch/futex.h>
75	#include <arch/arch.h>	75	#include <arch/arch.h>
76	#include <arch.h>	76	#include <arch.h>
77	#include <arch/faddr.h>	77	#include <arch/faddr.h>
78	#include <ipc/ipc.h>	78	#include <ipc/ipc.h>
79	#include <macros.h>	79	#include <macros.h>
80	#include <adt/btree.h>	80	#include <adt/btree.h>
81	#include <smp/smp.h>	81	#include <smp/smp.h>
82	#include <ddi/ddi.h>	82	#include <ddi/ddi.h>
-		83	#include <console/console.h>
83		84
84	/** Global configuration structure. */	85	/** Global configuration structure. */
85	config_t config;	86	config_t config;
86		87
87	/** Initial user-space tasks */	88	/** Initial user-space tasks */
88	init_t init = {	89	init_t init = {
89	.cnt = 0	90	.cnt = 0
90	};	91	};
91		92
92	/** Boot allocations. */	93	/** Boot allocations. */
93	ballocs_t ballocs = {	94	ballocs_t ballocs = {
94	.base = NULL,	95	.base = NULL,
95	.size = 0	96	.size = 0
96	};	97	};
97		98
98	context_t ctx;	99	context_t ctx;
99		100
100	/*	101	/*
101	* These 'hardcoded' variables will be intialized by	102	* These 'hardcoded' variables will be intialized by
102	* the linker or the low level assembler code with	103	* the linker or the low level assembler code with
103	* appropriate sizes and addresses.	104	* appropriate sizes and addresses.
104	*/	105	*/
105		106
106	/*< Virtual address of where the kernel is loaded. /	107	/*< Virtual address of where the kernel is loaded. /
107	uintptr_t hardcoded_load_address = 0;	108	uintptr_t hardcoded_load_address = 0;
108	/*< Size of the kernel code in bytes. /	109	/*< Size of the kernel code in bytes. /
109	size_t hardcoded_ktext_size = 0;	110	size_t hardcoded_ktext_size = 0;
110	/*< Size of the kernel data in bytes. /	111	/*< Size of the kernel data in bytes. /
111	size_t hardcoded_kdata_size = 0;	112	size_t hardcoded_kdata_size = 0;
112	/*< Lowest safe stack virtual address. /	113	/*< Lowest safe stack virtual address. /
113	uintptr_t stack_safe = 0;	114	uintptr_t stack_safe = 0;
114		115
115	void main_bsp(void);	116	void main_bsp(void);
116	void main_ap(void);	117	void main_ap(void);
117		118
118	/*	119	/*
119	* These two functions prevent stack from underflowing during the	120	* These two functions prevent stack from underflowing during the
120	* kernel boot phase when SP is set to the very top of the reserved	121	* kernel boot phase when SP is set to the very top of the reserved
121	* space. The stack could get corrupted by a fooled compiler-generated	122	* space. The stack could get corrupted by a fooled compiler-generated
122	* pop sequence otherwise.	123	* pop sequence otherwise.
123	*/	124	*/
124	static void main_bsp_separated_stack(void);	125	static void main_bsp_separated_stack(void);
125	#ifdef CONFIG_SMP	126	#ifdef CONFIG_SMP
126	static void main_ap_separated_stack(void);	127	static void main_ap_separated_stack(void);
127	#endif	128	#endif
128		129
129	#define CONFIG_STACK_SIZE ((1 << STACK_FRAMES) * STACK_SIZE)	130	#define CONFIG_STACK_SIZE ((1 << STACK_FRAMES) * STACK_SIZE)
130		131
131	/** Main kernel routine for bootstrap CPU.	132	/** Main kernel routine for bootstrap CPU.
132	*	133	*
133	* Initializes the kernel by bootstrap CPU.	134	* Initializes the kernel by bootstrap CPU.
134	* This function passes control directly to	135	* This function passes control directly to
135	* main_bsp_separated_stack().	136	* main_bsp_separated_stack().
136	*	137	*
137	* Assuming interrupts_disable().	138	* Assuming interrupts_disable().
138	*	139	*
139	*/	140	*/
140	void main_bsp(void)	141	void main_bsp(void)
141	{	142	{
142	LOG();	143	LOG();
143		144
144	config.cpu_count = 1;	145	config.cpu_count = 1;
145	config.cpu_active = 1;	146	config.cpu_active = 1;
146		147
147	config.base = hardcoded_load_address;	148	config.base = hardcoded_load_address;
148	config.kernel_size = ALIGN_UP(hardcoded_ktext_size +	149	config.kernel_size = ALIGN_UP(hardcoded_ktext_size +
149	hardcoded_kdata_size, PAGE_SIZE);	150	hardcoded_kdata_size, PAGE_SIZE);
150	config.stack_size = CONFIG_STACK_SIZE;	151	config.stack_size = CONFIG_STACK_SIZE;
151		152
152	/* Initialy the stack is placed just after the kernel */	153	/* Initialy the stack is placed just after the kernel */
153	config.stack_base = config.base + config.kernel_size;	154	config.stack_base = config.base + config.kernel_size;
154		155
155	/* Avoid placing stack on top of init */	156	/* Avoid placing stack on top of init */
156	count_t i;	157	count_t i;
157	for (i = 0; i < init.cnt; i++) {	158	for (i = 0; i < init.cnt; i++) {
158	if (PA_overlaps(config.stack_base, config.stack_size,	159	if (PA_overlaps(config.stack_base, config.stack_size,
159	init.tasks[i].addr, init.tasks[i].size))	160	init.tasks[i].addr, init.tasks[i].size))
160	config.stack_base = ALIGN_UP(init.tasks[i].addr +	161	config.stack_base = ALIGN_UP(init.tasks[i].addr +
161	init.tasks[i].size, config.stack_size);	162	init.tasks[i].size, config.stack_size);
162	}	163	}
163		164
164	/* Avoid placing stack on top of boot allocations. */	165	/* Avoid placing stack on top of boot allocations. */
165	if (ballocs.size) {	166	if (ballocs.size) {
166	if (PA_overlaps(config.stack_base, config.stack_size,	167	if (PA_overlaps(config.stack_base, config.stack_size,
167	ballocs.base, ballocs.size))	168	ballocs.base, ballocs.size))
168	config.stack_base = ALIGN_UP(ballocs.base +	169	config.stack_base = ALIGN_UP(ballocs.base +
169	ballocs.size, PAGE_SIZE);	170	ballocs.size, PAGE_SIZE);
170	}	171	}
171		172
172	if (config.stack_base < stack_safe)	173	if (config.stack_base < stack_safe)
173	config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);	174	config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);
174		175
175	version_print();	176	version_print();
176		177
177	LOG("\nconfig.base=%#" PRIp " config.kernel_size=%" PRIs	178	LOG("\nconfig.base=%#" PRIp " config.kernel_size=%" PRIs
178	"\nconfig.stack_base=%#" PRIp " config.stack_size=%" PRIs,	179	"\nconfig.stack_base=%#" PRIp " config.stack_size=%" PRIs,
179	config.base, config.kernel_size,	180	config.base, config.kernel_size,
180	config.stack_base, config.stack_size);	181	config.stack_base, config.stack_size);
181		182
182	context_save(&ctx);	183	context_save(&ctx);
183	context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base,	184	context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base,
184	THREAD_STACK_SIZE);	185	THREAD_STACK_SIZE);
185	context_restore(&ctx);	186	context_restore(&ctx);
186	/* not reached */	187	/* not reached */
187	}	188	}
188		189
189		190
190	/** Main kernel routine for bootstrap CPU using new stack.	191	/** Main kernel routine for bootstrap CPU using new stack.
191	*	192	*
192	* Second part of main_bsp().	193	* Second part of main_bsp().
193	*	194	*
194	*/	195	*/
195	void main_bsp_separated_stack(void)	196	void main_bsp_separated_stack(void)
196	{	197	{
197	LOG();	198	LOG();
198		199
199	the_initialize(THE);	200	the_initialize(THE);
200		201
201	/*	202	/*
202	* kconsole data structures must be initialized very early	203	* kconsole data structures must be initialized very early
203	* because other subsystems will register their respective	204	* because other subsystems will register their respective
204	* commands.	205	* commands.
205	*/	206	*/
206	LOG_EXEC(kconsole_init());	207	LOG_EXEC(kconsole_init());
207		208
208	/*	209	/*
209	* Exception handler initialization, before architecture	210	* Exception handler initialization, before architecture
210	* starts adding its own handlers	211	* starts adding its own handlers
211	*/	212	*/
212	LOG_EXEC(exc_init());	213	LOG_EXEC(exc_init());
213		214
214	/*	215	/*
215	* Memory management subsystems initialization.	216	* Memory management subsystems initialization.
216	*/	217	*/
217	LOG_EXEC(arch_pre_mm_init());	218	LOG_EXEC(arch_pre_mm_init());
218	LOG_EXEC(frame_init());	219	LOG_EXEC(frame_init());
219		220
220	/* Initialize at least 1 memory segment big enough for slab to work. */	221	/* Initialize at least 1 memory segment big enough for slab to work. */
221	LOG_EXEC(slab_cache_init());	222	LOG_EXEC(slab_cache_init());
222	LOG_EXEC(btree_init());	223	LOG_EXEC(btree_init());
223	LOG_EXEC(as_init());	224	LOG_EXEC(as_init());
224	LOG_EXEC(page_init());	225	LOG_EXEC(page_init());
225	LOG_EXEC(tlb_init());	226	LOG_EXEC(tlb_init());
226	LOG_EXEC(ddi_init());	227	LOG_EXEC(ddi_init());
227	LOG_EXEC(tasklet_init());	228	LOG_EXEC(tasklet_init());
228	LOG_EXEC(arch_post_mm_init());	229	LOG_EXEC(arch_post_mm_init());
229	LOG_EXEC(arch_pre_smp_init());	230	LOG_EXEC(arch_pre_smp_init());
230	LOG_EXEC(smp_init());	231	LOG_EXEC(smp_init());
231		232
232	/* Slab must be initialized after we know the number of processors. */	233	/* Slab must be initialized after we know the number of processors. */
233	LOG_EXEC(slab_enable_cpucache());	234	LOG_EXEC(slab_enable_cpucache());
234		235
235	printf("Detected %" PRIc " CPU(s), %" PRIu64" MB free memory\n",	236	printf("Detected %" PRIc " CPU(s), %" PRIu64" MB free memory\n",
236	config.cpu_count, SIZE2MB(zone_total_size()));	237	config.cpu_count, SIZE2MB(zone_total_size()));
237		238
238	LOG_EXEC(cpu_init());	239	LOG_EXEC(cpu_init());
239		240
240	LOG_EXEC(calibrate_delay_loop());	241	LOG_EXEC(calibrate_delay_loop());
241	LOG_EXEC(clock_counter_init());	242	LOG_EXEC(clock_counter_init());
242	LOG_EXEC(timeout_init());	243	LOG_EXEC(timeout_init());
243	LOG_EXEC(scheduler_init());	244	LOG_EXEC(scheduler_init());
244	LOG_EXEC(task_init());	245	LOG_EXEC(task_init());
245	LOG_EXEC(thread_init());	246	LOG_EXEC(thread_init());
246	LOG_EXEC(futex_init());	247	LOG_EXEC(futex_init());
247		248
248	if (init.cnt > 0) {	249	if (init.cnt > 0) {
249	count_t i;	250	count_t i;
250	for (i = 0; i < init.cnt; i++)	251	for (i = 0; i < init.cnt; i++)
251	printf("init[%" PRIc "].addr=%#" PRIp	252	printf("init[%" PRIc "].addr=%#" PRIp
252	", init[%" PRIc "].size=%#" PRIs "\n",	253	", init[%" PRIc "].size=%#" PRIs "\n",
253	i, init.tasks[i].addr,	254	i, init.tasks[i].addr,
254	i, init.tasks[i].size);	255	i, init.tasks[i].size);
255	} else	256	} else
256	printf("No init binaries found\n");	257	printf("No init binaries found\n");
257		258
258	LOG_EXEC(ipc_init());	259	LOG_EXEC(ipc_init());
-		260	LOG_EXEC(klog_init());
259		261
260	/*	262	/*
261	* Create kernel task.	263	* Create kernel task.
262	*/	264	*/
263	task_t *kernel = task_create(AS_KERNEL, "kernel");	265	task_t *kernel = task_create(AS_KERNEL, "kernel");
264	if (!kernel)	266	if (!kernel)
265	panic("Can't create kernel task\n");	267	panic("Can't create kernel task\n");
266		268
267	/*	269	/*
268	* Create the first thread.	270	* Create the first thread.
269	*/	271	*/
270	thread_t *kinit_thread = thread_create(kinit, NULL, kernel, 0, "kinit", true);	272	thread_t *kinit_thread = thread_create(kinit, NULL, kernel, 0, "kinit", true);
271	if (!kinit_thread)	273	if (!kinit_thread)
272	panic("Can't create kinit thread\n");	274	panic("Can't create kinit thread\n");
273	LOG_EXEC(thread_ready(kinit_thread));	275	LOG_EXEC(thread_ready(kinit_thread));
274		276
275	/*	277	/*
276	* This call to scheduler() will return to kinit,	278	* This call to scheduler() will return to kinit,
277	* starting the thread of kernel threads.	279	* starting the thread of kernel threads.
278	*/	280	*/
279	scheduler();	281	scheduler();
280	/* not reached */	282	/* not reached */
281	}	283	}
282		284
283		285
284	#ifdef CONFIG_SMP	286	#ifdef CONFIG_SMP
285	/** Main kernel routine for application CPUs.	287	/** Main kernel routine for application CPUs.
286	*	288	*
287	* Executed by application processors, temporary stack	289	* Executed by application processors, temporary stack
288	* is at ctx.sp which was set during BSP boot.	290	* is at ctx.sp which was set during BSP boot.
289	* This function passes control directly to	291	* This function passes control directly to
290	* main_ap_separated_stack().	292	* main_ap_separated_stack().
291	*	293	*
292	* Assuming interrupts_disable()'d.	294	* Assuming interrupts_disable()'d.
293	*	295	*
294	*/	296	*/
295	void main_ap(void)	297	void main_ap(void)
296	{	298	{
297	/*	299	/*
298	* Incrementing the active CPU counter will guarantee that the	300	* Incrementing the active CPU counter will guarantee that the
299	* *_init() functions can find out that they need to	301	* *_init() functions can find out that they need to
300	* do initialization for AP only.	302	* do initialization for AP only.
301	*/	303	*/
302	config.cpu_active++;	304	config.cpu_active++;
303		305
304	/*	306	/*
305	* The THE structure is well defined because ctx.sp is used as stack.	307	* The THE structure is well defined because ctx.sp is used as stack.
306	*/	308	*/
307	the_initialize(THE);	309	the_initialize(THE);
308		310
309	arch_pre_mm_init();	311	arch_pre_mm_init();
310	frame_init();	312	frame_init();
311	page_init();	313	page_init();
312	tlb_init();	314	tlb_init();
313	arch_post_mm_init();	315	arch_post_mm_init();
314		316
315	cpu_init();	317	cpu_init();
316	calibrate_delay_loop();	318	calibrate_delay_loop();
317	arch_post_cpu_init();	319	arch_post_cpu_init();
318		320
319	the_copy(THE, (the_t *) CPU->stack);	321	the_copy(THE, (the_t *) CPU->stack);
320		322
321	/*	323	/*
322	* If we woke kmp up before we left the kernel stack, we could	324	* If we woke kmp up before we left the kernel stack, we could
323	* collide with another CPU coming up. To prevent this, we	325	* collide with another CPU coming up. To prevent this, we
324	* switch to this cpu's private stack prior to waking kmp up.	326	* switch to this cpu's private stack prior to waking kmp up.
325	*/	327	*/
326	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack),	328	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack),
327	(uintptr_t) CPU->stack, CPU_STACK_SIZE);	329	(uintptr_t) CPU->stack, CPU_STACK_SIZE);
328	context_restore(&CPU->saved_context);	330	context_restore(&CPU->saved_context);
329	/* not reached */	331	/* not reached */
330	}	332	}
331		333
332		334
333	/** Main kernel routine for application CPUs using new stack.	335	/** Main kernel routine for application CPUs using new stack.
334	*	336	*
335	* Second part of main_ap().	337	* Second part of main_ap().
336	*	338	*
337	*/	339	*/
338	void main_ap_separated_stack(void)	340	void main_ap_separated_stack(void)
339	{	341	{
340	/*	342	/*
341	* Configure timeouts for this cpu.	343	* Configure timeouts for this cpu.
342	*/	344	*/
343	timeout_init();	345	timeout_init();
344		346
345	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	347	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
346	scheduler();	348	scheduler();
347	/* not reached */	349	/* not reached */
348	}	350	}
349	#endif /* CONFIG_SMP */	351	#endif /* CONFIG_SMP */
350		352
351	/** @}	353	/** @}
352	*/	354	*/
353		355

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(root)/trunk/kernel/generic/src/main/main.c @ 4042 – Rev 3061 → 3097