prom.h revision 1.3
1 1.3 cgd /* $NetBSD: prom.h,v 1.3 1996/09/26 22:51:53 cgd Exp $ */ 2 1.1 cgd 3 1.1 cgd /* 4 1.1 cgd * Copyright (c) 1994, 1995 Carnegie-Mellon University. 5 1.1 cgd * All rights reserved. 6 1.1 cgd * 7 1.1 cgd * Author: Keith Bostic, Chris G. Demetriou 8 1.1 cgd * 9 1.1 cgd * Permission to use, copy, modify and distribute this software and 10 1.1 cgd * its documentation is hereby granted, provided that both the copyright 11 1.1 cgd * notice and this permission notice appear in all copies of the 12 1.1 cgd * software, derivative works or modified versions, and any portions 13 1.1 cgd * thereof, and that both notices appear in supporting documentation. 14 1.1 cgd * 15 1.1 cgd * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 1.1 cgd * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 1.1 cgd * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 1.1 cgd * 19 1.1 cgd * Carnegie Mellon requests users of this software to return to 20 1.1 cgd * 21 1.1 cgd * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 22 1.1 cgd * School of Computer Science 23 1.1 cgd * Carnegie Mellon University 24 1.1 cgd * Pittsburgh PA 15213-3890 25 1.1 cgd * 26 1.1 cgd * any improvements or extensions that they make and grant Carnegie the 27 1.1 cgd * rights to redistribute these changes. 28 1.1 cgd */ 29 1.1 cgd 30 1.1 cgd #ifndef ASSEMBLER 31 1.1 cgd struct prom_vec { 32 1.1 cgd int (*routine)(); 33 1.1 cgd struct crd *routine_arg; 34 1.1 cgd }; 35 1.1 cgd 36 1.1 cgd /* The return value from a prom call. */ 37 1.1 cgd typedef union { 38 1.1 cgd struct { 39 1.1 cgd u_int64_t 40 1.1 cgd retval : 32, /* return value. */ 41 1.1 cgd unit : 8, 42 1.1 cgd mbz : 8, 43 1.1 cgd error : 13, 44 1.1 cgd status : 3; 45 1.1 cgd } u; 46 1.1 cgd u_int64_t bits; 47 1.1 cgd } prom_return_t; 48 1.1 cgd 49 1.1 cgd #ifdef STANDALONE 50 1.1 cgd int getchar __P((void)); 51 1.1 cgd int prom_open __P((char *, int)); 52 1.1 cgd void putchar __P((int)); 53 1.1 cgd #endif 54 1.1 cgd 55 1.2 cgd void prom_halt __P((int)) __attribute__((__noreturn__)); 56 1.1 cgd int prom_getenv __P((int, char *, int)); 57 1.1 cgd #endif 58 1.1 cgd 59 1.1 cgd /* Prom operation values. */ 60 1.1 cgd #define PROM_R_CLOSE 0x11 61 1.1 cgd #define PROM_R_GETC 0x01 62 1.1 cgd #define PROM_R_GETENV 0x22 63 1.1 cgd #define PROM_R_OPEN 0x10 64 1.1 cgd #define PROM_R_PUTS 0x02 65 1.1 cgd #define PROM_R_READ 0x13 66 1.3 cgd #define PROM_R_WRITE 0x14 67 1.1 cgd 68 1.1 cgd /* Environment variable values. */ 69 1.1 cgd #define PROM_E_BOOTED_DEV 0x4 70 1.1 cgd #define PROM_E_BOOTED_FILE 0x6 71 1.1 cgd #define PROM_E_BOOTED_OSFLAGS 0x8 72 1.1 cgd #define PROM_E_TTY_DEV 0xf 73 1.1 cgd 74 1.1 cgd /* 75 1.1 cgd * There have to be stub routines to do the copying that ensures that the 76 1.1 cgd * PROM doesn't get called with an address larger than 32 bits. Calls that 77 1.1 cgd * either don't need to copy anything, or don't need the copy because it's 78 1.1 cgd * already being done elsewhere, are defined here. 79 1.1 cgd */ 80 1.1 cgd #define prom_close(chan) prom_dispatch(PROM_R_CLOSE, chan) 81 1.1 cgd #define prom_read(chan, len, buf, blkno) \ 82 1.1 cgd prom_dispatch(PROM_R_READ, chan, len, buf, blkno) 83 1.3 cgd #define prom_write(chan, len, buf, blkno) \ 84 1.3 cgd prom_dispatch(PROM_R_WRITE, chan, len, buf, blkno) 85
Indexes created Mon Sep 29 21:09:56 GMT 2025