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/* $OpenBSD: powerpc.h,v 1.3 2004/01/22 20:45:18 miod Exp $ */
/* $NetBSD: powerpc.h,v 1.1 1996/09/30 16:34:30 ws Exp $ */
/*
* Copyright (C) 1996 Wolfgang Solfrank.
* Copyright (C) 1996 TooLs GmbH.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MACHINE_POWERPC_H_
#define _MACHINE_POWERPC_H_
struct mem_region {
vm_offset_t start;
vm_size_t size;
};
void mem_regions(struct mem_region **, struct mem_region **);
/*
* These two functions get used solely in boot() in machdep.c.
*
* Not sure whether boot itself should be implementation dependent instead. XXX
*/
typedef void (exit_f)(void) /*__attribute__((__noreturn__))*/ ;
typedef void (boot_f)(char *bootspec) /* __attribute__((__noreturn__))*/ ;
typedef void (vmon_f)(void);
typedef unsigned char (nvram_rd_f)(unsigned long offset);
typedef void (nvram_wr_f)(unsigned long offset, unsigned char val);
typedef unsigned long (tps_f)(void);
typedef void (mem_regions_f)(struct mem_region **memp,
struct mem_region **availp);
typedef int (clock_read_f)(int *sec, int *min, int *hour, int *day,
int *mon, int *yr);
typedef int (clock_write_f)(int sec, int min, int hour, int day,
int mon, int yr);
typedef int (time_read_f)(u_long *sec);
typedef int (time_write_f)(u_long sec);
/* firmware interface.
* regardless of type of firmware used several items
* are need from firmware to boot up.
* these include:
* memory information
* vmsetup for firmware calls.
* default character print mechanism ???
* firmware exit (return)
* firmware boot (reset)
* vmon - tell firmware the bsd vm is active.
*/
struct firmware {
mem_regions_f *mem_regions;
exit_f *exit;
boot_f *boot;
vmon_f *vmon;
nvram_rd_f *nvram_rd;
nvram_wr_f *nvram_wr;
tps_f *tps;
clock_read_f *clock_read;
clock_write_f *clock_write;
time_read_f *time_read;
time_write_f *time_write;
#ifdef FW_HAS_PUTC
boot_f *putc;
#endif
};
extern struct firmware *fw;
#define ppc_exit() if (fw->exit != NULL) (fw->exit)()
#define ppc_boot(x) if (fw->boot != NULL) (fw->boot)(x)
#define ppc_nvram_rd(a) ({unsigned char val; \
if (fw->nvram_rd !=NULL) \
val = (fw->nvram_rd)(a); \
else \
val = 0; \
val;})
#define ppc_nvram_wr(a, v) if (fw->nvram_wr !=NULL) (fw->nvram_wr)(a, v)
#define ppc_tps() ({unsigned long val; \
if (fw->tps != NULL) \
val = (fw->tps)(); \
else \
val = 0; \
val;})
#define SPR_XER "1"
#define SPR_LR "8"
#define SPR_CTR "9"
#define SPR_DSISR "18"
#define SPR_DAR "19"
#define SPR_DEC "22"
#define SPR_SDR1 "25"
#define SPR_SRR0 "26"
#define SPR_SRR1 "27"
#define ppc_get_spr(reg) ({u_int32_t val; \
__asm__ volatile("mfspr %0," reg : "=r"(val)); \
val;})
#define ppc_set_spr(reg, val) ({ \
__asm__ volatile("mtspr " reg ",%0" :: "r"(val));})
#endif /* _MACHINE_POWERPC_H_ */
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