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Annotation of sys/arch/alpha/include/prom.h, Revision 1.1

1.1     ! nbrk        1: /* $OpenBSD: prom.h,v 1.8 2000/11/08 21:27:22 ericj Exp $ */
        !             2: /* $NetBSD: prom.h,v 1.12 2000/06/08 03:10:06 thorpej Exp $ */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Author: Keith Bostic, Chris G. Demetriou
        !             9:  *
        !            10:  * Permission to use, copy, modify and distribute this software and
        !            11:  * its documentation is hereby granted, provided that both the copyright
        !            12:  * notice and this permission notice appear in all copies of the
        !            13:  * software, derivative works or modified versions, and any portions
        !            14:  * thereof, and that both notices appear in supporting documentation.
        !            15:  *
        !            16:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            17:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
        !            18:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            19:  *
        !            20:  * Carnegie Mellon requests users of this software to return to
        !            21:  *
        !            22:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
        !            23:  *  School of Computer Science
        !            24:  *  Carnegie Mellon University
        !            25:  *  Pittsburgh PA 15213-3890
        !            26:  *
        !            27:  * any improvements or extensions that they make and grant Carnegie the
        !            28:  * rights to redistribute these changes.
        !            29:  */
        !            30:
        !            31: #ifndef        ASSEMBLER
        !            32: struct prom_vec {
        !            33:        u_int64_t       routine;
        !            34:        void            *routine_arg;
        !            35: };
        !            36:
        !            37: /* The return value from a prom call. */
        !            38: typedef union {
        !            39:        struct {
        !            40:                u_int64_t
        !            41:                        retval  : 32,           /* return value. */
        !            42:                        unit    : 8,
        !            43:                        mbz     : 8,
        !            44:                        error   : 13,
        !            45:                        status  : 3;
        !            46:        } u;
        !            47:        u_int64_t bits;
        !            48: } prom_return_t;
        !            49:
        !            50: #ifdef _STANDALONE
        !            51: int    getchar(void);
        !            52: int    prom_open(char *, int);
        !            53: void   putchar(int);
        !            54: #endif
        !            55:
        !            56: void   prom_halt(int) __attribute__((__noreturn__));
        !            57: int    prom_getenv(int, char *, int);
        !            58:
        !            59: void   hwrpb_primary_init(void);
        !            60: void   hwrpb_restart_setup(void);
        !            61: #endif
        !            62:
        !            63: /* Prom operation values. */
        !            64: #define        PROM_R_CLOSE            0x11
        !            65: #define        PROM_R_GETC             0x01
        !            66: #define        PROM_R_GETENV           0x22
        !            67: #define        PROM_R_OPEN             0x10
        !            68: #define        PROM_R_PUTS             0x02
        !            69: #define        PROM_R_READ             0x13
        !            70: #define        PROM_R_WRITE            0x14
        !            71: #define        PROM_R_IOCTL            0x12
        !            72:
        !            73: /* Prom IOCTL operation subcodes */
        !            74: #define        PROM_I_SKIP2IRG         1
        !            75: #define        PROM_I_SKIP2MARK        2
        !            76: #define        PROM_I_REWIND           3
        !            77: #define        PROM_I_WRITEMARK        4
        !            78:
        !            79: /* Environment variable values. */
        !            80: #define        PROM_E_BOOTED_DEV       0x4
        !            81: #define        PROM_E_BOOTED_FILE      0x6
        !            82: #define        PROM_E_BOOTED_OSFLAGS   0x8
        !            83: #define        PROM_E_TTY_DEV          0xf
        !            84: #define        PROM_E_SCSIID           0x42
        !            85: #define        PROM_E_SCSIFAST         0x43
        !            86:
        !            87: #if defined(_STANDALONE) || defined(ENABLEPROM)
        !            88: /*
        !            89:  * These can't be called from the kernel without great care.
        !            90:  *
        !            91:  * There have to be stub routines to do the copying that ensures that the
        !            92:  * PROM doesn't get called with an address larger than 32 bits.  Calls that
        !            93:  * either don't need to copy anything, or don't need the copy because it's
        !            94:  * already being done elsewhere, are defined here.
        !            95:  */
        !            96: #define        prom_close(chan)                                                \
        !            97:        prom_dispatch(PROM_R_CLOSE, chan, 0, 0, 0)
        !            98: #define        prom_read(chan, len, buf, blkno)                                \
        !            99:        prom_dispatch(PROM_R_READ, chan, len, (u_int64_t)buf, blkno)
        !           100: #define        prom_write(chan, len, buf, blkno)                               \
        !           101:        prom_dispatch(PROM_R_WRITE, chan, len, (u_int64_t)buf, blkno)
        !           102: #define        prom_ioctl(chan, op, count)                                     \
        !           103:        prom_dispatch(PROM_R_IOCTL, chan, op, (int64_t)count, 0, 0)
        !           104: #define        prom_putstr(chan, str, len)                                     \
        !           105:        prom_dispatch(PROM_R_PUTS, chan, (u_int64_t)str, len, 0)
        !           106: #define        prom_getc(chan)                                                 \
        !           107:        prom_dispatch(PROM_R_GETC, chan, 0, 0, 0)
        !           108: #define prom_getenv_disp(id, buf, len)                                 \
        !           109:        prom_dispatch(PROM_R_GETENV, id, (u_int64_t)buf, len, 0)
        !           110: #endif
        !           111:
        !           112: #ifndef ASSEMBLER
        !           113: #ifdef _KERNEL
        !           114: int    prom_enter(void);
        !           115: void   prom_leave(int);
        !           116:
        !           117: void   promcnputc(dev_t, int);
        !           118: int    promcngetc(dev_t);
        !           119: int    promcnlookc(dev_t, char *);
        !           120:
        !           121: u_int64_t      prom_dispatch(u_int64_t, u_int64_t, u_int64_t, u_int64_t,
        !           122:                    u_int64_t);
        !           123: #endif /* _KERNEL */
        !           124: #endif /* ASSEMBLER */