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 */
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