/* $OpenBSD: autoconf.h,v 1.14 2023/04/11 00:45:07 jsg Exp $ */
/* $NetBSD: autoconf.h,v 1.19 2000/06/08 03:10:06 thorpej Exp $ */

/*
 * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 * 
 * 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 the
 * rights to redistribute these changes.
 */

/*
 * Machine-dependent structures of autoconfiguration
 */

struct mainbus_attach_args {
        const char *ma_name;            /* device name */
        int         ma_slot;            /* CPU "slot" number; only meaningful
                                           when attaching CPUs */
};

struct bootdev_data {
        char    *protocol;
        int     bus;
        int     slot;
        int     channel;
        char    *remote_address;
        int     unit;
        int     boot_dev_type;
        char    *ctrl_dev_type;
};

/*
 * The boot program passes a pointer (in the boot environment virtual
 * address space; "BEVA") to a bootinfo to the kernel using
 * the following convention:
 *
 *      a0 contains first free page frame number
 *      a1 contains page number of current level 1 page table
 *      if a2 contains BOOTINFO_MAGIC and a4 is nonzero:
 *              a3 contains pointer (BEVA) to bootinfo
 *              a4 contains bootinfo version number
 *      if a2 contains BOOTINFO_MAGIC and a4 contains 0 (backward compat):
 *              a3 contains pointer (BEVA) to bootinfo version
 *                  (u_long), then the bootinfo
 */

#define BOOTINFO_MAGIC                  0xdeadbeeffeedface

struct bootinfo_v1 {
        u_long  ssym;                   /* 0: start of kernel sym table */
        u_long  esym;                   /* 8: end of kernel sym table   */
        char    boot_flags[64];         /* 16: boot flags               */
        char    booted_kernel[64];      /* 80: name of booted kernel    */
        void    *hwrpb;                 /* 144: hwrpb pointer (BEVA)    */
        u_long  hwrpbsize;              /* 152: size of hwrpb data      */
        int     (*cngetc)(void);        /* 160: console getc pointer    */
        void    (*cnputc)(int);         /* 168: console putc pointer    */
        void    (*cnpollc)(int);        /* 176: console pollc pointer   */
        long    howto;                  /* 184: boothowto flags         */
        u_long  pad[8];                 /* 192: rsvd for future use     */
                                        /* 256: total size              */
};

/*
 * Kernel-internal structure used to hold important bits of boot
 * information.  NOT to be used by boot blocks.
 *
 * Note that not all of the fields from the bootinfo struct(s)
 * passed by the boot blocks aren't here (because they're not currently
 * used by the kernel!).  Fields here which aren't supplied by the
 * bootinfo structure passed by the boot blocks are supposed to be
 * filled in at startup with sane contents.
 */
struct bootinfo_kernel {
        u_long  ssym;                   /* start of syms */
        u_long  esym;                   /* end of syms */
        u_long  hwrpb_phys;             /* hwrpb physical address */
        u_long  hwrpb_size;             /* size of hwrpb data */
        char    boot_flags[64];         /* boot flags */
        char    booted_kernel[64];      /* name of booted kernel */
        char    booted_dev[64];         /* name of booted device */
};

/*
 * Lookup table entry for Alpha system variations.
 */
struct alpha_variation_table {
        u_int64_t       avt_variation;  /* variation, from HWRPB */
        const char      *avt_model;     /* model string */
};

#ifdef _KERNEL
extern struct device *booted_device;
extern int booted_partition;
extern struct bootdev_data *bootdev_data;
extern struct bootinfo_kernel bootinfo;

const char *alpha_variation_name(u_int64_t,
    const struct alpha_variation_table *);
const char *alpha_unknown_sysname(void);
#endif /* _KERNEL */