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/* $NetBSD: prom.h,v 1.12 2000/06/08 03:10:06 thorpej Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Keith Bostic, 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.
*/
#ifndef ASSEMBLER
struct prom_vec {
u_int64_t routine;
void *routine_arg;
};
/* The return value from a prom call. */
typedef union {
struct {
u_int64_t
retval : 32, /* return value. */
unit : 8,
mbz : 8,
error : 13,
status : 3;
} u;
u_int64_t bits;
} prom_return_t;
#ifdef _STANDALONE
int getchar(void);
int prom_open(char *, int);
void putchar(int);
#endif
void prom_halt(int) __attribute__((__noreturn__));
int prom_getenv(int, char *, int);
void hwrpb_primary_init(void);
void hwrpb_restart_setup(void);
#endif
/* Prom operation values. */
#define PROM_R_CLOSE 0x11
#define PROM_R_GETC 0x01
#define PROM_R_GETENV 0x22
#define PROM_R_OPEN 0x10
#define PROM_R_PUTS 0x02
#define PROM_R_READ 0x13
#define PROM_R_WRITE 0x14
#define PROM_R_IOCTL 0x12
/* Prom IOCTL operation subcodes */
#define PROM_I_SKIP2IRG 1
#define PROM_I_SKIP2MARK 2
#define PROM_I_REWIND 3
#define PROM_I_WRITEMARK 4
/* Environment variable values. */
#define PROM_E_BOOTED_DEV 0x4
#define PROM_E_BOOTED_FILE 0x6
#define PROM_E_BOOTED_OSFLAGS 0x8
#define PROM_E_TTY_DEV 0xf
#define PROM_E_SCSIID 0x42
#define PROM_E_SCSIFAST 0x43
#if defined(_STANDALONE) || defined(ENABLEPROM)
/*
* These can't be called from the kernel without great care.
*
* There have to be stub routines to do the copying that ensures that the
* PROM doesn't get called with an address larger than 32 bits. Calls that
* either don't need to copy anything, or don't need the copy because it's
* already being done elsewhere, are defined here.
*/
#define prom_close(chan) \
prom_dispatch(PROM_R_CLOSE, chan, 0, 0, 0)
#define prom_read(chan, len, buf, blkno) \
prom_dispatch(PROM_R_READ, chan, len, (u_int64_t)buf, blkno)
#define prom_write(chan, len, buf, blkno) \
prom_dispatch(PROM_R_WRITE, chan, len, (u_int64_t)buf, blkno)
#define prom_ioctl(chan, op, count) \
prom_dispatch(PROM_R_IOCTL, chan, op, (int64_t)count, 0, 0)
#define prom_putstr(chan, str, len) \
prom_dispatch(PROM_R_PUTS, chan, (u_int64_t)str, len, 0)
#define prom_getc(chan) \
prom_dispatch(PROM_R_GETC, chan, 0, 0, 0)
#define prom_getenv_disp(id, buf, len) \
prom_dispatch(PROM_R_GETENV, id, (u_int64_t)buf, len, 0)
#endif
#ifndef ASSEMBLER
#ifdef _KERNEL
int prom_enter(void);
void prom_leave(int);
void promcnputc(dev_t, int);
int promcngetc(dev_t);
int promcnlookc(dev_t, char *);
u_int64_t prom_dispatch(u_int64_t, u_int64_t, u_int64_t, u_int64_t,
u_int64_t);
#endif /* _KERNEL */
#endif /* ASSEMBLER */
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