[apple/xnu.git] / osfmk / i386 / i386_init.c

/*
 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/* 
 * Mach Operating System
 * Copyright (c) 1991,1990,1989, 1988 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

#include <platforms.h>
#include <mach_kdb.h>
#include <himem.h>

#include <mach/i386/vm_param.h>

#include <string.h>
#include <mach/vm_param.h>
#include <mach/vm_prot.h>
#include <mach/machine.h>
#include <mach/time_value.h>
#include <kern/spl.h>
#include <kern/assert.h>
#include <kern/debug.h>
#include <kern/misc_protos.h>
#include <kern/startup.h>
#include <kern/clock.h>
#include <kern/xpr.h>
#include <kern/cpu_data.h>
#include <kern/processor.h>
#include <vm/vm_page.h>
#include <vm/pmap.h>
#include <vm/vm_kern.h>
#include <i386/fpu.h>
#include <i386/pmap.h>
#include <i386/ipl.h>
#include <i386/pio.h>
#include <i386/misc_protos.h>
#include <i386/cpuid.h>
#include <i386/mp.h>
#include <i386/machine_routines.h>
#include <i386/postcode.h>
#if	MACH_KDB
#include <ddb/db_aout.h>
#endif /* MACH_KDB */
#include <ddb/tr.h>
#ifdef __MACHO__
#include <mach/thread_status.h>

static KernelBootArgs_t *kernelBootArgs;
#endif

vm_offset_t	boot_args_start = 0;	/* pointer to kernel arguments, set in start.s */

#ifdef __MACHO__
#include	<mach-o/loader.h>
vm_offset_t     edata, etext, end;

/* operations only against currently loaded 32 bit mach kernel */
extern struct segment_command *getsegbyname(const char *);
extern struct section *firstsect(struct segment_command *);
extern struct section *nextsect(struct segment_command *, struct section *);

/*
 * Called first for a mach-o kernel before paging is set up.
 * Returns the first available physical address in memory.
 */

void
i386_preinit(void)
{
	struct segment_command	*sgp;
	struct section		*sp;
	struct KernelBootArgs *pp;
	int i;

	sgp = getsegbyname("__DATA");
	if (sgp) {
		sp = firstsect(sgp);
		if (sp) {
			do {
				if ((sp->flags & S_ZEROFILL))
					bzero((char *) sp->addr, sp->size);
			} while ((sp = nextsect(sgp, sp)));
		}
	}

	kernelBootArgs = (KernelBootArgs_t *)
		ml_static_ptovirt(boot_args_start);
	pp = (struct KernelBootArgs *) kernelBootArgs;
	pp->configEnd = (char *)
		ml_static_ptovirt((vm_offset_t) pp->configEnd);
	for (i = 0; i < pp->numBootDrivers; i++) {
		pp->driverConfig[i].address = (unsigned)
			ml_static_ptovirt(pp->driverConfig[i].address);
	}
	return;
}
#endif

extern const char version[];
extern const char version_variant[];

/*
 *	Cpu initialization.  Running virtual, but without MACH VM
 *	set up.  First C routine called, unless i386_preinit() was called first.
 */
void
i386_init(void)
{
	unsigned int	maxmem;
	unsigned int	cpus;

	postcode(I386_INIT_ENTRY);

	master_cpu = 0;
	cpu_data_alloc(TRUE);
	cpu_init();
	postcode(CPU_INIT_D);

	/*
	 * Setup some processor related structures to satisfy funnels.
	 * Must be done before using unparallelized device drivers.
	 */
	processor_bootstrap();

	PE_init_platform(FALSE, kernelBootArgs);
	postcode(PE_INIT_PLATFORM_D);

	/*
	 * Set up initial thread so current_thread() works early on
	 */
	thread_bootstrap();
	postcode(THREAD_BOOTSTRAP_D);

	printf_init();			/* Init this in case we need debugger */
	panic_init();			/* Init this in case we need debugger */

	/* setup debugging output if one has been chosen */
	PE_init_kprintf(FALSE);

	/* setup console output */
	PE_init_printf(FALSE);

	kprintf("version_variant = %s\n", version_variant);
	kprintf("version         = %s\n", version);

	/*   
	 * VM initialization, after this we're using page tables...
	 * The maximum number of cpus must be set beforehand.
	 */
	if (!PE_parse_boot_arg("maxmem", &maxmem))
		maxmem=0;
	else
		maxmem = maxmem * (1024 * 1024);

	if (PE_parse_boot_arg("cpus", &cpus)) {
		if ((0 < cpus) && (cpus < max_ncpus))
                        max_ncpus = cpus;
	}

	i386_vm_init(maxmem, kernelBootArgs);

	PE_init_platform(TRUE, kernelBootArgs);

	/* create the console for verbose or pretty mode */
	PE_create_console();

	machine_startup();

}
Commit	Line	Data
55e303ae	1	/*
8f6c56a5	2	* Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
55e303ae	3	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
55e303ae	5	*
8f6c56a5 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
55e303ae A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990,1989, 1988 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56
55e303ae A	57	#include <platforms.h>
55e303ae A	58	#include <mach_kdb.h>
8f6c56a5	59	#include <himem.h>
55e303ae A	60
	61	#include <mach/i386/vm_param.h>
	62
	63	#include <string.h>
	64	#include <mach/vm_param.h>
	65	#include <mach/vm_prot.h>
	66	#include <mach/machine.h>
	67	#include <mach/time_value.h>
55e303ae A	68	#include <kern/spl.h>
	69	#include <kern/assert.h>
	70	#include <kern/debug.h>
	71	#include <kern/misc_protos.h>
	72	#include <kern/startup.h>
	73	#include <kern/clock.h>
55e303ae A	74	#include <kern/xpr.h>
	75	#include <kern/cpu_data.h>
	76	#include <kern/processor.h>
	77	#include <vm/vm_page.h>
	78	#include <vm/pmap.h>
	79	#include <vm/vm_kern.h>
	80	#include <i386/fpu.h>
	81	#include <i386/pmap.h>
	82	#include <i386/ipl.h>
8f6c56a5	83	#include <i386/pio.h>
55e303ae A	84	#include <i386/misc_protos.h>
55e303ae A	85	#include <i386/cpuid.h>
55e303ae	86	#include <i386/mp.h>
91447636 A	87	#include <i386/machine_routines.h>
91447636 A	88	#include <i386/postcode.h>
55e303ae A	89	#if MACH_KDB
	90	#include <ddb/db_aout.h>
	91	#endif /* MACH_KDB */
	92	#include <ddb/tr.h>
8f6c56a5 A	93	#ifdef __MACHO__
8f6c56a5 A	94	#include <mach/thread_status.h>
55e303ae	95
8f6c56a5 A	96	static KernelBootArgs_t *kernelBootArgs;
8f6c56a5 A	97	#endif
55e303ae	98
8f6c56a5 A	99	vm_offset_t boot_args_start = 0; /* pointer to kernel arguments, set in start.s */
	100
	101	#ifdef __MACHO__
	102	#include <mach-o/loader.h>
	103	vm_offset_t edata, etext, end;
	104
	105	/* operations only against currently loaded 32 bit mach kernel */
	106	extern struct segment_command getsegbyname(const char );
	107	extern struct section firstsect(struct segment_command );
	108	extern struct section nextsect(struct segment_command , struct section *);
	109
	110	/*
	111	* Called first for a mach-o kernel before paging is set up.
	112	* Returns the first available physical address in memory.
	113	*/
8ad349bb	114
8f6c56a5 A	115	void
	116	i386_preinit(void)
	117	{
	118	struct segment_command *sgp;
	119	struct section *sp;
	120	struct KernelBootArgs *pp;
	121	int i;
	122
	123	sgp = getsegbyname("__DATA");
	124	if (sgp) {
	125	sp = firstsect(sgp);
	126	if (sp) {
	127	do {
	128	if ((sp->flags & S_ZEROFILL))
	129	bzero((char *) sp->addr, sp->size);
	130	} while ((sp = nextsect(sgp, sp)));
	131	}
	132	}
8ad349bb	133
8f6c56a5 A	134	kernelBootArgs = (KernelBootArgs_t *)
	135	ml_static_ptovirt(boot_args_start);
	136	pp = (struct KernelBootArgs *) kernelBootArgs;
	137	pp->configEnd = (char *)
	138	ml_static_ptovirt((vm_offset_t) pp->configEnd);
	139	for (i = 0; i < pp->numBootDrivers; i++) {
	140	pp->driverConfig[i].address = (unsigned)
	141	ml_static_ptovirt(pp->driverConfig[i].address);
	142	}
	143	return;
	144	}
	145	#endif
8ad349bb	146
8f6c56a5 A	147	extern const char version[];
8f6c56a5 A	148	extern const char version_variant[];
55e303ae A	149
	150	/*
	151	* Cpu initialization. Running virtual, but without MACH VM
8f6c56a5	152	* set up. First C routine called, unless i386_preinit() was called first.
55e303ae A	153	*/
55e303ae A	154	void
8f6c56a5	155	i386_init(void)
55e303ae A	156	{
55e303ae A	157	unsigned int maxmem;
91447636 A	158	unsigned int cpus;
	159
	160	postcode(I386_INIT_ENTRY);
55e303ae	161
5d5c5d0d	162	master_cpu = 0;
8f6c56a5	163	cpu_data_alloc(TRUE);
5d5c5d0d A	164	cpu_init();
5d5c5d0d A	165	postcode(CPU_INIT_D);
8ad349bb	166
8f6c56a5 A	167	/*
	168	* Setup some processor related structures to satisfy funnels.
	169	* Must be done before using unparallelized device drivers.
	170	*/
	171	processor_bootstrap();
	172
55e303ae	173	PE_init_platform(FALSE, kernelBootArgs);
91447636	174	postcode(PE_INIT_PLATFORM_D);
55e303ae	175
8f6c56a5 A	176	/*
	177	* Set up initial thread so current_thread() works early on
	178	*/
	179	thread_bootstrap();
	180	postcode(THREAD_BOOTSTRAP_D);
	181
55e303ae A	182	printf_init(); /* Init this in case we need debugger */
	183	panic_init(); /* Init this in case we need debugger */
	184
	185	/* setup debugging output if one has been chosen */
	186	PE_init_kprintf(FALSE);
55e303ae A	187
	188	/* setup console output */
	189	PE_init_printf(FALSE);
	190
	191	kprintf("version_variant = %s\n", version_variant);
	192	kprintf("version = %s\n", version);
	193
55e303ae A	194	/*
	195	* VM initialization, after this we're using page tables...
	196	* The maximum number of cpus must be set beforehand.
	197	*/
	198	if (!PE_parse_boot_arg("maxmem", &maxmem))
8f6c56a5	199	maxmem=0;
55e303ae	200	else
8f6c56a5	201	maxmem = maxmem * (1024 * 1024);
55e303ae	202
91447636 A	203	if (PE_parse_boot_arg("cpus", &cpus)) {
	204	if ((0 < cpus) && (cpus < max_ncpus))
	205	max_ncpus = cpus;
	206	}
55e303ae	207
8f6c56a5	208	i386_vm_init(maxmem, kernelBootArgs);
55e303ae A	209
	210	PE_init_platform(TRUE, kernelBootArgs);
	211
	212	/* create the console for verbose or pretty mode */
	213	PE_create_console();
91447636	214
55e303ae A	215	machine_startup();
	216
	217	}