570 lines
8.8 KiB
C
570 lines
8.8 KiB
C
/* $NetBSD: Locore.c,v 1.4 1998/02/22 07:42:30 mycroft Exp $ */
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <lib/libsa/stand.h>
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#include <machine/cpu.h>
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#include "openfirm.h"
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static int (*openfirmware_entry) __P((void *));
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static int openfirmware __P((void *));
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static void startup __P((void *, int, int (*)(void *), char *, int));
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static void setup __P((void));
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static int stack[256];
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#ifdef XCOFF_GLUE
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asm("
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.text
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.globl _entry
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_entry:
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.long _start,0,0
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");
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#endif
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asm("
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.text
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.globl _start
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_start:
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li 8,0
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li 9,0x100
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mtctr 9
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1:
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dcbf 0,8
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icbi 0,8
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addi 8,8,0x20
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bdnz 1b
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sync
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isync
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lis 1,stack@ha
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addi 1,1,stack@l
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addi 1,1,1024
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b startup
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");
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static int
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openfirmware(arg)
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void *arg;
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{
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asm volatile ("sync; isync");
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openfirmware_entry(arg);
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asm volatile ("sync; isync");
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}
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static void
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startup(vpd, res, openfirm, arg, argl)
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void *vpd;
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int res;
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int (*openfirm)(void *);
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char *arg;
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int argl;
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{
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openfirmware_entry = openfirm;
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setup();
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main();
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OF_exit();
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}
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__dead void
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OF_exit()
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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} args = {
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"exit",
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0,
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0
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};
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openfirmware(&args);
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for (;;); /* just in case */
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}
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int
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OF_finddevice(name)
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char *name;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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char *device;
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int phandle;
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} args = {
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"finddevice",
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1,
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1,
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};
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args.device = name;
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if (openfirmware(&args) == -1)
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return -1;
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return args.phandle;
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}
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int
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OF_instance_to_package(ihandle)
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int ihandle;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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int ihandle;
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int phandle;
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} args = {
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"instance-to-package",
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1,
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1,
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};
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args.ihandle = ihandle;
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if (openfirmware(&args) == -1)
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return -1;
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return args.phandle;
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}
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int
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OF_getprop(handle, prop, buf, buflen)
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int handle;
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char *prop;
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void *buf;
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int buflen;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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int phandle;
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char *prop;
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void *buf;
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int buflen;
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int size;
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} args = {
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"getprop",
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4,
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1,
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};
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args.phandle = handle;
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args.prop = prop;
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args.buf = buf;
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args.buflen = buflen;
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if (openfirmware(&args) == -1)
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return -1;
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return args.size;
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}
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#ifdef __notyet__ /* Has a bug on FirePower */
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int
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OF_setprop(handle, prop, buf, len)
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int handle;
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char *prop;
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void *buf;
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int len;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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int phandle;
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char *prop;
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void *buf;
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int len;
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int size;
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} args = {
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"setprop",
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4,
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1,
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};
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args.phandle = handle;
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args.prop = prop;
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args.buf = buf;
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args.len = len;
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if (openfirmware(&args) == -1)
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return -1;
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return args.size;
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}
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#endif
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int
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OF_open(dname)
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char *dname;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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char *dname;
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int handle;
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} args = {
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"open",
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1,
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1,
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};
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#ifdef OFW_DEBUG
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printf("OF_open(%s) -> ", dname);
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#endif
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args.dname = dname;
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if (openfirmware(&args) == -1 ||
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args.handle == 0) {
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#ifdef OFW_DEBUG
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printf("lose\n");
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#endif
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return -1;
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}
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#ifdef OFW_DEBUG
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printf("%d\n", args.handle);
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#endif
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return args.handle;
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}
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void
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OF_close(handle)
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int handle;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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int handle;
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} args = {
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"close",
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1,
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0,
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};
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#ifdef OFW_DEBUG
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printf("OF_close(%d)\n", handle);
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#endif
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args.handle = handle;
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openfirmware(&args);
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}
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int
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OF_write(handle, addr, len)
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int handle;
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void *addr;
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int len;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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int ihandle;
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void *addr;
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int len;
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int actual;
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} args = {
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"write",
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3,
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1,
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};
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#ifdef OFW_DEBUG
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if (len != 1)
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printf("OF_write(%d, %x, %x) -> ", handle, addr, len);
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#endif
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args.ihandle = handle;
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args.addr = addr;
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args.len = len;
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if (openfirmware(&args) == -1) {
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#ifdef OFW_DEBUG
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printf("lose\n");
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#endif
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return -1;
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}
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#ifdef OFW_DEBUG
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if (len != 1)
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printf("%x\n", args.actual);
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#endif
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return args.actual;
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}
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int
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OF_read(handle, addr, len)
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int handle;
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void *addr;
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int len;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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int ihandle;
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void *addr;
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int len;
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int actual;
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} args = {
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"read",
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3,
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1,
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};
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#ifdef OFW_DEBUG
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if (len != 1)
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printf("OF_read(%d, %x, %x) -> ", handle, addr, len);
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#endif
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args.ihandle = handle;
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args.addr = addr;
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args.len = len;
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if (openfirmware(&args) == -1) {
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#ifdef OFW_DEBUG
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printf("lose\n");
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#endif
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return -1;
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}
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#ifdef OFW_DEBUG
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if (len != 1)
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printf("%x\n", args.actual);
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#endif
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return args.actual;
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}
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int
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OF_seek(handle, pos)
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int handle;
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u_quad_t pos;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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int handle;
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int poshi;
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int poslo;
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int status;
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} args = {
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"seek",
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3,
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1,
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};
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#ifdef OFW_DEBUG
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printf("OF_seek(%d, %x, %x) -> ", handle, (int)(pos >> 32), (int)pos);
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#endif
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args.handle = handle;
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args.poshi = (int)(pos >> 32);
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args.poslo = (int)pos;
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if (openfirmware(&args) == -1) {
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#ifdef OFW_DEBUG
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printf("lose\n");
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#endif
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return -1;
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}
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#ifdef OFW_DEBUG
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printf("%d\n", args.status);
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#endif
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return args.status;
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}
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void *
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OF_claim(virt, size, align)
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void *virt;
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u_int size;
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u_int align;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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void *virt;
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u_int size;
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u_int align;
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void *baseaddr;
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} args = {
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"claim",
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3,
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1,
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};
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#ifdef OFW_DEBUG
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printf("OF_claim(%x, %x, %x) -> ", virt, size, align);
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#endif
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args.virt = virt;
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args.size = size;
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args.align = align;
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if (openfirmware(&args) == -1) {
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#ifdef OFW_DEBUG
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printf("lose\n");
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#endif
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return (void *)-1;
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}
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#ifdef OFW_DEBUG
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printf("%x\n", args.baseaddr);
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#endif
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return args.baseaddr;
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}
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void
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OF_release(virt, size)
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void *virt;
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u_int size;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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void *virt;
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u_int size;
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} args = {
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"release",
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2,
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0,
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};
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#ifdef OFW_DEBUG
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printf("OF_release(%x, %x)\n", virt, size);
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#endif
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args.virt = virt;
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args.size = size;
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openfirmware(&args);
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}
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int
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OF_milliseconds()
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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int ms;
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} args = {
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"milliseconds",
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0,
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1,
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};
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openfirmware(&args);
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return args.ms;
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}
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#ifdef __notyet__
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void
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OF_chain(virt, size, entry, arg, len)
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void *virt;
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u_int size;
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void (*entry)();
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void *arg;
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u_int len;
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{
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static struct {
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char *name;
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int nargs;
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int nreturns;
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void *virt;
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u_int size;
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void (*entry)();
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void *arg;
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u_int len;
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} args = {
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"chain",
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5,
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0,
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};
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args.virt = virt;
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args.size = size;
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args.entry = entry;
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args.arg = arg;
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args.len = len;
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openfirmware(&args);
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}
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#else
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void
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OF_chain(virt, size, entry, arg, len)
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void *virt;
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u_int size;
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void (*entry)();
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void *arg;
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u_int len;
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{
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/*
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* This is a REALLY dirty hack till the firmware gets this going
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*/
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#if 1
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OF_release(virt, size);
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#endif
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entry(0, 0, openfirmware_entry, arg, len);
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}
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#endif
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static int stdin;
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static int stdout;
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static void
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setup()
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{
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int chosen;
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if ((chosen = OF_finddevice("/chosen")) == -1)
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OF_exit();
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if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) !=
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sizeof(stdin) ||
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OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) !=
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sizeof(stdout))
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OF_exit();
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}
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void
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putchar(c)
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int c;
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{
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char ch = c;
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if (c == '\n')
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putchar('\r');
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OF_write(stdout, &ch, 1);
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}
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int
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getchar()
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{
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unsigned char ch = '\0';
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int l;
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while ((l = OF_read(stdin, &ch, 1)) != 1)
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if (l != -2 && l != 0)
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return -1;
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return ch;
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}
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