WebSVN – HelenOS – Diff – /branches/sparc/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 <proc/scheduler.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <main/kinit.h>
#include <main/version.h>
#include <console/kconsole.h>
#include <cpu.h>
#include <align.h>
#include <interrupt.h>
#include <arch/mm/memory_init.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 <typedefs.h>
#include <ipc/ipc.h>
#include <macros.h>
#include <adt/btree.h>
#include <console/klog.h>
#include <smp/smp.h>
 
/** Global configuration structure. */
config_t config;
 
/** Initial user-space tasks */
init_t init = {
    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.
 */
uintptr_t hardcoded_load_address = 0;   /**< Virtual address of where the kernel is loaded. */
size_t hardcoded_ktext_size = 0;    /**< Size of the kernel code in bytes. */
size_t hardcoded_kdata_size = 0;    /**< Size of the kernel data in bytes. */
 
uintptr_t stack_safe = 0;       /**< Lowest safe stack virtual address */
 
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)
{
    config.cpu_count = 1;
    config.cpu_active = 1;
   
    config.base = hardcoded_load_address;
    config.memory_size = get_memory_size();
   
    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);
   
    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)
{
    task_t *k;
    thread_t *t;
    count_t i;
   
    the_initialize(THE);
 
    /*
     * kconsole data structures must be initialized very early
     * because other subsystems will register their respective
     * commands.
     */
    kconsole_init();
   
    /*
     * Exception handler initialization, before architecture
     * starts adding its own handlers
     */
    exc_init();
 
    /*
     * Memory management subsystems initialization.
     */
    arch_pre_mm_init();
    frame_init();       /* Initialize at least 1 memory segment big enough for slab to work */
    slab_cache_init();
    btree_init();
    as_init();
    page_init();
    tlb_init();
    arch_post_mm_init();
 
    version_print();
    printf("kernel: %.*p hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) * 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);
    printf("stack:  %.*p size=%zdK\n", sizeof(uintptr_t) * 2, config.stack_base, config.stack_size >> 10);
 
    arch_pre_smp_init();
    smp_init();
   
    slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
 
    printf("config.memory_size=%zdM\n", config.memory_size >> 20);
    printf("config.cpu_count=%zd\n", config.cpu_count);
    cpu_init();
   
    calibrate_delay_loop();
    clock_counter_init();
    timeout_init();
    scheduler_init();
    task_init();
    thread_init();
    futex_init();
    klog_init();
   
    if (init.cnt > 0) {
        for (i = 0; i < init.cnt; i++)
            printf("init[%zd].addr=%.*p, init[%zd].size=%zd\n", i, sizeof(uintptr_t) * 2, init.tasks[i].addr, i, init.tasks[i].size);
    } else
        printf("No init binaries found\n");
   
    ipc_init();
 
    /*
     * Create kernel task.
     */
    k = task_create(AS_KERNEL, "KERNEL");
    if (!k)
        panic("can't create kernel task\n");
   
    /*
     * Create the first thread.
     */
    t = thread_create(kinit, NULL, k, 0, "kinit");
    if (!t)
        panic("can't create kinit thread\n");
    thread_ready(t);
   
    /*
     * 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 1901	Rev 1999
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 <proc/scheduler.h>	56	#include <proc/scheduler.h>
57	#include <proc/thread.h>	57	#include <proc/thread.h>
58	#include <proc/task.h>	58	#include <proc/task.h>
59	#include <main/kinit.h>	59	#include <main/kinit.h>
60	#include <main/version.h>	60	#include <main/version.h>
61	#include <console/kconsole.h>	61	#include <console/kconsole.h>
62	#include <cpu.h>	62	#include <cpu.h>
63	#include <align.h>	63	#include <align.h>
64	#include <interrupt.h>	64	#include <interrupt.h>
65	#include <arch/mm/memory_init.h>	65	#include <arch/mm/memory_init.h>
66	#include <mm/frame.h>	66	#include <mm/frame.h>
67	#include <mm/page.h>	67	#include <mm/page.h>
68	#include <genarch/mm/page_pt.h>	68	#include <genarch/mm/page_pt.h>
69	#include <mm/tlb.h>	69	#include <mm/tlb.h>
70	#include <mm/as.h>	70	#include <mm/as.h>
71	#include <mm/slab.h>	71	#include <mm/slab.h>
72	#include <synch/waitq.h>	72	#include <synch/waitq.h>
73	#include <synch/futex.h>	73	#include <synch/futex.h>
74	#include <arch/arch.h>	74	#include <arch/arch.h>
75	#include <arch.h>	75	#include <arch.h>
76	#include <arch/faddr.h>	76	#include <arch/faddr.h>
77	#include <typedefs.h>	77	#include <typedefs.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 <console/klog.h>	81	#include <console/klog.h>
82	#include <smp/smp.h>	82	#include <smp/smp.h>
83		83
84	/** Global configuration structure. */	84	/** Global configuration structure. */
85	config_t config;	85	config_t config;
86		86
87	/** Initial user-space tasks */	87	/** Initial user-space tasks */
88	init_t init = {	88	init_t init = {
89	0	89	0
90	};	90	};
91		91
92	/** Boot allocations. */	92	/** Boot allocations. */
93	ballocs_t ballocs = {	93	ballocs_t ballocs = {
94	.base = NULL,	94	.base = NULL,
95	.size = 0	95	.size = 0
96	};	96	};
97		97
98	context_t ctx;	98	context_t ctx;
99		99
100	/*	100	/*
101	* These 'hardcoded' variables will be intialized by	101	* These 'hardcoded' variables will be intialized by
102	* the linker or the low level assembler code with	102	* the linker or the low level assembler code with
103	* appropriate sizes and addresses.	103	* appropriate sizes and addresses.
104	*/	104	*/
105	uintptr_t hardcoded_load_address = 0; /*< Virtual address of where the kernel is loaded. /	105	uintptr_t hardcoded_load_address = 0; /*< Virtual address of where the kernel is loaded. /
106	size_t hardcoded_ktext_size = 0; /*< Size of the kernel code in bytes. /	106	size_t hardcoded_ktext_size = 0; /*< Size of the kernel code in bytes. /
107	size_t hardcoded_kdata_size = 0; /*< Size of the kernel data in bytes. /	107	size_t hardcoded_kdata_size = 0; /*< Size of the kernel data in bytes. /
108		108
109	uintptr_t stack_safe = 0; /*< Lowest safe stack virtual address /	109	uintptr_t stack_safe = 0; /*< Lowest safe stack virtual address /
110		110
111	void main_bsp(void);	111	void main_bsp(void);
112	void main_ap(void);	112	void main_ap(void);
113		113
114	/*	114	/*
115	* These two functions prevent stack from underflowing during the	115	* These two functions prevent stack from underflowing during the
116	* kernel boot phase when SP is set to the very top of the reserved	116	* kernel boot phase when SP is set to the very top of the reserved
117	* space. The stack could get corrupted by a fooled compiler-generated	117	* space. The stack could get corrupted by a fooled compiler-generated
118	* pop sequence otherwise.	118	* pop sequence otherwise.
119	*/	119	*/
120	static void main_bsp_separated_stack(void);	120	static void main_bsp_separated_stack(void);
121	#ifdef CONFIG_SMP	121	#ifdef CONFIG_SMP
122	static void main_ap_separated_stack(void);	122	static void main_ap_separated_stack(void);
123	#endif	123	#endif
124		124
125	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)	125	#define CONFIG_STACK_SIZE ((1<<STACK_FRAMES)*STACK_SIZE)
126		126
127	/** Main kernel routine for bootstrap CPU.	127	/** Main kernel routine for bootstrap CPU.
128	*	128	*
129	* Initializes the kernel by bootstrap CPU.	129	* Initializes the kernel by bootstrap CPU.
130	* This function passes control directly to	130	* This function passes control directly to
131	* main_bsp_separated_stack().	131	* main_bsp_separated_stack().
132	*	132	*
133	* Assuming interrupts_disable().	133	* Assuming interrupts_disable().
134	*	134	*
135	*/	135	*/
136	void main_bsp(void)	136	void main_bsp(void)
137	{	137	{
138	config.cpu_count = 1;	138	config.cpu_count = 1;
139	config.cpu_active = 1;	139	config.cpu_active = 1;
140		140
141	config.base = hardcoded_load_address;	141	config.base = hardcoded_load_address;
142	config.memory_size = get_memory_size();	142	config.memory_size = get_memory_size();
143		143
144	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);	144	config.kernel_size = ALIGN_UP(hardcoded_ktext_size + hardcoded_kdata_size, PAGE_SIZE);
145	config.stack_size = CONFIG_STACK_SIZE;	145	config.stack_size = CONFIG_STACK_SIZE;
146		146
147	/* Initialy the stack is placed just after the kernel */	147	/* Initialy the stack is placed just after the kernel */
148	config.stack_base = config.base + config.kernel_size;	148	config.stack_base = config.base + config.kernel_size;
149		149
150	/* Avoid placing stack on top of init */	150	/* Avoid placing stack on top of init */
151	count_t i;	151	count_t i;
152	for (i = 0; i < init.cnt; i++) {	152	for (i = 0; i < init.cnt; i++) {
153	if (PA_overlaps(config.stack_base, config.stack_size, init.tasks[i].addr, init.tasks[i].size))	153	if (PA_overlaps(config.stack_base, config.stack_size, init.tasks[i].addr, init.tasks[i].size))
154	config.stack_base = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, config.stack_size);	154	config.stack_base = ALIGN_UP(init.tasks[i].addr + init.tasks[i].size, config.stack_size);
155	}	155	}
156		156
157	/* Avoid placing stack on top of boot allocations. */	157	/* Avoid placing stack on top of boot allocations. */
158	if (ballocs.size) {	158	if (ballocs.size) {
159	if (PA_overlaps(config.stack_base, config.stack_size, ballocs.base, ballocs.size))	159	if (PA_overlaps(config.stack_base, config.stack_size, ballocs.base, ballocs.size))
160	config.stack_base = ALIGN_UP(ballocs.base + ballocs.size, PAGE_SIZE);	160	config.stack_base = ALIGN_UP(ballocs.base + ballocs.size, PAGE_SIZE);
161	}	161	}
162		162
163	if (config.stack_base < stack_safe)	163	if (config.stack_base < stack_safe)
164	config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);	164	config.stack_base = ALIGN_UP(stack_safe, PAGE_SIZE);
165		165
166	context_save(&ctx);	166	context_save(&ctx);
167	context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base, THREAD_STACK_SIZE);	167	context_set(&ctx, FADDR(main_bsp_separated_stack), config.stack_base, THREAD_STACK_SIZE);
168	context_restore(&ctx);	168	context_restore(&ctx);
169	/* not reached */	169	/* not reached */
170	}	170	}
171		171
172		172
173	/** Main kernel routine for bootstrap CPU using new stack.	173	/** Main kernel routine for bootstrap CPU using new stack.
174	*	174	*
175	* Second part of main_bsp().	175	* Second part of main_bsp().
176	*	176	*
177	*/	177	*/
178	void main_bsp_separated_stack(void)	178	void main_bsp_separated_stack(void)
179	{	179	{
180	task_t *k;	180	task_t *k;
181	thread_t *t;	181	thread_t *t;
182	count_t i;	182	count_t i;
183		183
184	the_initialize(THE);	184	the_initialize(THE);
185		185
186	/*	186	/*
187	* kconsole data structures must be initialized very early	187	* kconsole data structures must be initialized very early
188	* because other subsystems will register their respective	188	* because other subsystems will register their respective
189	* commands.	189	* commands.
190	*/	190	*/
191	kconsole_init();	191	kconsole_init();
192		192
193	/*	193	/*
194	* Exception handler initialization, before architecture	194	* Exception handler initialization, before architecture
195	* starts adding its own handlers	195	* starts adding its own handlers
196	*/	196	*/
197	exc_init();	197	exc_init();
198		198
199	/*	199	/*
200	* Memory management subsystems initialization.	200	* Memory management subsystems initialization.
201	*/	201	*/
202	arch_pre_mm_init();	202	arch_pre_mm_init();
203	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */	203	frame_init(); /* Initialize at least 1 memory segment big enough for slab to work */
204	slab_cache_init();	204	slab_cache_init();
205	btree_init();	205	btree_init();
206	as_init();	206	as_init();
207	page_init();	207	page_init();
208	tlb_init();	208	tlb_init();
209	arch_post_mm_init();	209	arch_post_mm_init();
210		210
211	version_print();	211	version_print();
212	printf("kernel: %.p hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);	212	printf("kernel: %.p hardcoded_ktext_size=%zdK, hardcoded_kdata_size=%zdK\n", sizeof(uintptr_t) 2, config.base, hardcoded_ktext_size >> 10, hardcoded_kdata_size >> 10);
213	printf("stack: %.p size=%zdK\n", sizeof(uintptr_t) 2, config.stack_base, config.stack_size >> 10);	213	printf("stack: %.p size=%zdK\n", sizeof(uintptr_t) 2, config.stack_base, config.stack_size >> 10);
214		214
215	arch_pre_smp_init();	215	arch_pre_smp_init();
216	smp_init();	216	smp_init();
217		217
218	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */	218	slab_enable_cpucache(); /* Slab must be initialized AFTER we know the number of processors */
219		219
220	printf("config.memory_size=%zdM\n", config.memory_size >> 20);	220	printf("config.memory_size=%zdM\n", config.memory_size >> 20);
221	printf("config.cpu_count=%zd\n", config.cpu_count);	221	printf("config.cpu_count=%zd\n", config.cpu_count);
222	cpu_init();	222	cpu_init();
223		223
224	calibrate_delay_loop();	224	calibrate_delay_loop();
225	clock_counter_init();	225	clock_counter_init();
226	timeout_init();	226	timeout_init();
227	scheduler_init();	227	scheduler_init();
228	task_init();	228	task_init();
229	thread_init();	229	thread_init();
230	futex_init();	230	futex_init();
231	klog_init();	231	klog_init();
232		232
233	if (init.cnt > 0) {	233	if (init.cnt > 0) {
234	for (i = 0; i < init.cnt; i++)	234	for (i = 0; i < init.cnt; i++)
235	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(uintptr_t) 2, init.tasks[i].addr, i, init.tasks[i].size);	235	printf("init[%zd].addr=%.p, init[%zd].size=%zd\n", i, sizeof(uintptr_t) 2, init.tasks[i].addr, i, init.tasks[i].size);
236	} else	236	} else
237	printf("No init tasks found\n");	237	printf("No init binaries found\n");
238		238
239	ipc_init();	239	ipc_init();
240		240
241	/*	241	/*
242	* Create kernel task.	242	* Create kernel task.
243	*/	243	*/
244	k = task_create(AS_KERNEL, "KERNEL");	244	k = task_create(AS_KERNEL, "KERNEL");
245	if (!k)	245	if (!k)
246	panic("can't create kernel task\n");	246	panic("can't create kernel task\n");
247		247
248	/*	248	/*
249	* Create the first thread.	249	* Create the first thread.
250	*/	250	*/
251	t = thread_create(kinit, NULL, k, 0, "kinit");	251	t = thread_create(kinit, NULL, k, 0, "kinit");
252	if (!t)	252	if (!t)
253	panic("can't create kinit thread\n");	253	panic("can't create kinit thread\n");
254	thread_ready(t);	254	thread_ready(t);
255		255
256	/*	256	/*
257	* This call to scheduler() will return to kinit,	257	* This call to scheduler() will return to kinit,
258	* starting the thread of kernel threads.	258	* starting the thread of kernel threads.
259	*/	259	*/
260	scheduler();	260	scheduler();
261	/* not reached */	261	/* not reached */
262	}	262	}
263		263
264		264
265	#ifdef CONFIG_SMP	265	#ifdef CONFIG_SMP
266	/** Main kernel routine for application CPUs.	266	/** Main kernel routine for application CPUs.
267	*	267	*
268	* Executed by application processors, temporary stack	268	* Executed by application processors, temporary stack
269	* is at ctx.sp which was set during BSP boot.	269	* is at ctx.sp which was set during BSP boot.
270	* This function passes control directly to	270	* This function passes control directly to
271	* main_ap_separated_stack().	271	* main_ap_separated_stack().
272	*	272	*
273	* Assuming interrupts_disable()'d.	273	* Assuming interrupts_disable()'d.
274	*	274	*
275	*/	275	*/
276	void main_ap(void)	276	void main_ap(void)
277	{	277	{
278	/*	278	/*
279	* Incrementing the active CPU counter will guarantee that the	279	* Incrementing the active CPU counter will guarantee that the
280	* *_init() functions can find out that they need to	280	* *_init() functions can find out that they need to
281	* do initialization for AP only.	281	* do initialization for AP only.
282	*/	282	*/
283	config.cpu_active++;	283	config.cpu_active++;
284		284
285	/*	285	/*
286	* The THE structure is well defined because ctx.sp is used as stack.	286	* The THE structure is well defined because ctx.sp is used as stack.
287	*/	287	*/
288	the_initialize(THE);	288	the_initialize(THE);
289		289
290	arch_pre_mm_init();	290	arch_pre_mm_init();
291	frame_init();	291	frame_init();
292	page_init();	292	page_init();
293	tlb_init();	293	tlb_init();
294	arch_post_mm_init();	294	arch_post_mm_init();
295		295
296	cpu_init();	296	cpu_init();
297	calibrate_delay_loop();	297	calibrate_delay_loop();
298	arch_post_cpu_init();	298	arch_post_cpu_init();
299		299
300	the_copy(THE, (the_t *) CPU->stack);	300	the_copy(THE, (the_t *) CPU->stack);
301		301
302	/*	302	/*
303	* If we woke kmp up before we left the kernel stack, we could	303	* If we woke kmp up before we left the kernel stack, we could
304	* collide with another CPU coming up. To prevent this, we	304	* collide with another CPU coming up. To prevent this, we
305	* switch to this cpu's private stack prior to waking kmp up.	305	* switch to this cpu's private stack prior to waking kmp up.
306	*/	306	*/
307	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (uintptr_t) CPU->stack, CPU_STACK_SIZE);	307	context_set(&CPU->saved_context, FADDR(main_ap_separated_stack), (uintptr_t) CPU->stack, CPU_STACK_SIZE);
308	context_restore(&CPU->saved_context);	308	context_restore(&CPU->saved_context);
309	/* not reached */	309	/* not reached */
310	}	310	}
311		311
312		312
313	/** Main kernel routine for application CPUs using new stack.	313	/** Main kernel routine for application CPUs using new stack.
314	*	314	*
315	* Second part of main_ap().	315	* Second part of main_ap().
316	*	316	*
317	*/	317	*/
318	void main_ap_separated_stack(void)	318	void main_ap_separated_stack(void)
319	{	319	{
320	/*	320	/*
321	* Configure timeouts for this cpu.	321	* Configure timeouts for this cpu.
322	*/	322	*/
323	timeout_init();	323	timeout_init();
324		324
325	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);	325	waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
326	scheduler();	326	scheduler();
327	/* not reached */	327	/* not reached */
328	}	328	}
329	#endif /* CONFIG_SMP */	329	#endif /* CONFIG_SMP */
330		330
331	/** @}	331	/** @}
332	*/	332	*/
333		333

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(root)/branches/sparc/kernel/generic/src/main/main.c @ 3798 – Rev 1901 → 1999