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autoconf.h revision 1.15 
      1 /* $NetBSD: autoconf.h,v 1.15 1998/05/13 23:38:27 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 /*
     31  * Machine-dependent structures of autoconfiguration
     32  */
     33 
     34 struct confargs;
     35 
     36 typedef int (*intr_handler_t) __P((void *));
     37 
     38 struct confargs {
     39 	char	*ca_name;		/* Device name. */
     40 	int	ca_slot;		/* Device slot. */
     41 	int	ca_offset;		/* Offset into slot. */
     42 };
     43 
     44 struct bootdev_data {
     45 	char	*protocol;
     46 	int	bus;
     47 	int	slot;
     48 	int	channel;
     49 	char	*remote_address;
     50 	int	unit;
     51 	int	boot_dev_type;
     52 	char	*ctrl_dev_type;
     53 };
     54 
     55 /*
     56  * The boot program passes a pointer (in the boot environment virtual
     57  * address address space; "BEVA") to a bootinfo to the kernel using
     58  * the following convention:
     59  *
     60  *	a0 contains first free page frame number
     61  *	a1 contains page number of current level 1 page table
     62  *	if a2 contains BOOTINFO_MAGIC and a4 is nonzero:
     63  *		a3 contains pointer (BEVA) to bootinfo
     64  *		a4 contains bootinfo version number
     65  *	if a2 contains BOOTINFO_MAGIC and a4 contains 0 (backward compat):
     66  *		a3 contains pointer (BEVA) to bootinfo version
     67  *		    (u_long), then the bootinfo
     68  */
     69 
     70 #define	BOOTINFO_MAGIC			0xdeadbeeffeedface
     71 
     72 struct bootinfo_v1 {
     73 	u_long	ssym;			/* 0: start of kernel sym table	*/
     74 	u_long	esym;			/* 8: end of kernel sym table	*/
     75 	char	boot_flags[64];		/* 16: boot flags		*/
     76 	char	booted_kernel[64];	/* 80: name of booted kernel	*/
     77 	void	*hwrpb;			/* 144: hwrpb pointer (BEVA)	*/
     78 	u_long	hwrpbsize;		/* 152: size of hwrpb data	*/
     79 	int	(*cngetc) __P((void));	/* 160: console getc pointer	*/
     80 	void	(*cnputc) __P((int));	/* 168: console putc pointer	*/
     81 	void	(*cnpollc) __P((int));	/* 176: console pollc pointer	*/
     82 	u_long	pad[9];			/* 184: rsvd for future use	*/
     83 					/* 256: total size		*/
     84 };
     85 
     86 /*
     87  * Kernel-internal structure used to hold important bits of boot
     88  * information.  NOT to be used by boot blocks.
     89  *
     90  * Note that not all of the fields from the bootinfo struct(s)
     91  * passed by the boot blocks aren't here (because they're not currently
     92  * used by the kernel!).  Fields here which aren't supplied by the
     93  * bootinfo structure passed by the boot blocks are supposed to be
     94  * filled in at startup with sane contents.
     95  */
     96 struct bootinfo_kernel {
     97 	u_long	ssym;			/* start of syms */
     98 	u_long	esym;			/* end of syms */
     99 	u_long	hwrpb_phys;		/* hwrpb physical address */
    100 	u_long	hwrpb_size;		/* size of hwrpb data */
    101 	char	boot_flags[64];		/* boot flags */
    102 	char	booted_kernel[64];	/* name of booted kernel */
    103 	char	booted_dev[64];		/* name of booted device */
    104 };
    105 
    106 /*
    107  * Lookup table entry for Alpha system variations.
    108  */
    109 struct alpha_variation_table {
    110 	u_int64_t	avt_variation;	/* variation, from HWRPB */
    111 	const char	*avt_model;	/* model string */
    112 };
    113 
    114 #ifdef _KERNEL
    115 #ifdef EVCNT_COUNTERS
    116 extern struct evcnt clock_intr_evcnt;
    117 #endif
    118 
    119 extern struct device *booted_device;
    120 extern int booted_partition;
    121 extern struct bootdev_data *bootdev_data;
    122 extern struct bootinfo_kernel bootinfo;
    123 
    124 const char *alpha_variation_name __P((u_int64_t,
    125     const struct alpha_variation_table *));
    126 const char *alpha_unknown_sysname __P((void));
    127 #endif /* _KERNEL */
    128