NetBSD/sys/arch/ofppc/stand/ofwboot/Locore.c

582 lines
9.0 KiB
C

/* $NetBSD: Locore.c,v 1.7 2002/09/18 01:45:04 chs Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 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.
*/
#include <lib/libsa/stand.h>
#include <machine/cpu.h>
#include "openfirm.h"
static int (*openfirmware_entry) __P((void *));
static int openfirmware __P((void *));
static void startup __P((void *, int, int (*)(void *), char *, int));
static void setup __P((void));
static int stack[1024];
asm("
.text
.globl _start
_start:
li 8,0
li 9,0x100
mtctr 9
1:
dcbf 0,8
icbi 0,8
addi 8,8,0x20
bdnz 1b
sync
isync
lis 1,stack+4096-16@ha
addi 1,1,stack+4096-16@l
b startup
");
static int
openfirmware(arg)
void *arg;
{
asm volatile ("sync; isync");
openfirmware_entry(arg);
asm volatile ("sync; isync");
}
static void
startup(vpd, res, openfirm, arg, argl)
void *vpd;
int res;
int (*openfirm)(void *);
char *arg;
int argl;
{
extern char etext[], _end[], _edata[];
memset(_edata, 0, (_end - _edata));
openfirmware_entry = openfirm;
setup();
main();
OF_exit();
}
__dead void
OF_exit()
{
static struct {
char *name;
int nargs;
int nreturns;
} args = {
"exit",
0,
0
};
openfirmware(&args);
for (;;); /* just in case */
}
__dead void
OF_boot(bootspec)
char *bootspec;
{
static struct {
char *name;
int nargs;
int nreturns;
char *bootspec;
} args = {
"boot",
1,
0,
};
args.bootspec = bootspec;
openfirmware(&args);
for (;;); /* just is case */
}
int
OF_finddevice(name)
char *name;
{
static struct {
char *name;
int nargs;
int nreturns;
char *device;
int phandle;
} args = {
"finddevice",
1,
1,
};
args.device = name;
if (openfirmware(&args) == -1)
return -1;
return args.phandle;
}
int
OF_instance_to_package(ihandle)
int ihandle;
{
static struct {
char *name;
int nargs;
int nreturns;
int ihandle;
int phandle;
} args = {
"instance-to-package",
1,
1,
};
args.ihandle = ihandle;
if (openfirmware(&args) == -1)
return -1;
return args.phandle;
}
int
OF_getprop(handle, prop, buf, buflen)
int handle;
char *prop;
void *buf;
int buflen;
{
static struct {
char *name;
int nargs;
int nreturns;
int phandle;
char *prop;
void *buf;
int buflen;
int size;
} args = {
"getprop",
4,
1,
};
args.phandle = handle;
args.prop = prop;
args.buf = buf;
args.buflen = buflen;
if (openfirmware(&args) == -1)
return -1;
return args.size;
}
#ifdef __notyet__ /* Has a bug on FirePower */
int
OF_setprop(handle, prop, buf, len)
int handle;
char *prop;
void *buf;
int len;
{
static struct {
char *name;
int nargs;
int nreturns;
int phandle;
char *prop;
void *buf;
int len;
int size;
} args = {
"setprop",
4,
1,
};
args.phandle = handle;
args.prop = prop;
args.buf = buf;
args.len = len;
if (openfirmware(&args) == -1)
return -1;
return args.size;
}
#endif
int
OF_open(dname)
char *dname;
{
static struct {
char *name;
int nargs;
int nreturns;
char *dname;
int handle;
} args = {
"open",
1,
1,
};
#ifdef OFW_DEBUG
printf("OF_open(%s) -> ", dname);
#endif
args.dname = dname;
if (openfirmware(&args) == -1 ||
args.handle == 0) {
#ifdef OFW_DEBUG
printf("lose\n");
#endif
return -1;
}
#ifdef OFW_DEBUG
printf("%d\n", args.handle);
#endif
return args.handle;
}
void
OF_close(handle)
int handle;
{
static struct {
char *name;
int nargs;
int nreturns;
int handle;
} args = {
"close",
1,
0,
};
#ifdef OFW_DEBUG
printf("OF_close(%d)\n", handle);
#endif
args.handle = handle;
openfirmware(&args);
}
int
OF_write(handle, addr, len)
int handle;
void *addr;
int len;
{
static struct {
char *name;
int nargs;
int nreturns;
int ihandle;
void *addr;
int len;
int actual;
} args = {
"write",
3,
1,
};
#ifdef OFW_DEBUG
if (len != 1)
printf("OF_write(%d, %x, %x) -> ", handle, addr, len);
#endif
args.ihandle = handle;
args.addr = addr;
args.len = len;
if (openfirmware(&args) == -1) {
#ifdef OFW_DEBUG
printf("lose\n");
#endif
return -1;
}
#ifdef OFW_DEBUG
if (len != 1)
printf("%x\n", args.actual);
#endif
return args.actual;
}
int
OF_read(handle, addr, len)
int handle;
void *addr;
int len;
{
static struct {
char *name;
int nargs;
int nreturns;
int ihandle;
void *addr;
int len;
int actual;
} args = {
"read",
3,
1,
};
#ifdef OFW_DEBUG
if (len != 1)
printf("OF_read(%d, %x, %x) -> ", handle, addr, len);
#endif
args.ihandle = handle;
args.addr = addr;
args.len = len;
if (openfirmware(&args) == -1) {
#ifdef OFW_DEBUG
printf("lose\n");
#endif
return -1;
}
#ifdef OFW_DEBUG
if (len != 1)
printf("%x\n", args.actual);
#endif
return args.actual;
}
int
OF_seek(handle, pos)
int handle;
u_quad_t pos;
{
static struct {
char *name;
int nargs;
int nreturns;
int handle;
int poshi;
int poslo;
int status;
} args = {
"seek",
3,
1,
};
#ifdef OFW_DEBUG
printf("OF_seek(%d, %x, %x) -> ", handle, (int)(pos >> 32), (int)pos);
#endif
args.handle = handle;
args.poshi = (int)(pos >> 32);
args.poslo = (int)pos;
if (openfirmware(&args) == -1) {
#ifdef OFW_DEBUG
printf("lose\n");
#endif
return -1;
}
#ifdef OFW_DEBUG
printf("%d\n", args.status);
#endif
return args.status;
}
void *
OF_claim(virt, size, align)
void *virt;
u_int size;
u_int align;
{
static struct {
char *name;
int nargs;
int nreturns;
void *virt;
u_int size;
u_int align;
void *baseaddr;
} args = {
"claim",
3,
1,
};
#ifdef OFW_DEBUG
printf("OF_claim(%x, %x, %x) -> ", virt, size, align);
#endif
args.virt = virt;
args.size = size;
args.align = align;
if (openfirmware(&args) == -1) {
#ifdef OFW_DEBUG
printf("lose\n");
#endif
return (void *)-1;
}
#ifdef OFW_DEBUG
printf("%x\n", args.baseaddr);
#endif
return args.baseaddr;
}
void
OF_release(virt, size)
void *virt;
u_int size;
{
static struct {
char *name;
int nargs;
int nreturns;
void *virt;
u_int size;
} args = {
"release",
2,
0,
};
#ifdef OFW_DEBUG
printf("OF_release(%x, %x)\n", virt, size);
#endif
args.virt = virt;
args.size = size;
openfirmware(&args);
}
int
OF_milliseconds()
{
static struct {
char *name;
int nargs;
int nreturns;
int ms;
} args = {
"milliseconds",
0,
1,
};
openfirmware(&args);
return args.ms;
}
#ifdef __notyet__
void
OF_chain(virt, size, entry, arg, len)
void *virt;
u_int size;
void (*entry)();
void *arg;
u_int len;
{
static struct {
char *name;
int nargs;
int nreturns;
void *virt;
u_int size;
void (*entry)();
void *arg;
u_int len;
} args = {
"chain",
5,
0,
};
args.virt = virt;
args.size = size;
args.entry = entry;
args.arg = arg;
args.len = len;
openfirmware(&args);
}
#else
void
OF_chain(virt, size, entry, arg, len)
void *virt;
u_int size;
void (*entry)();
void *arg;
u_int len;
{
/*
* This is a REALLY dirty hack till the firmware gets this going
*/
#if 1
OF_release(virt, size);
#endif
entry(0, 0, openfirmware_entry, arg, len);
}
#endif
static int stdin;
static int stdout;
static void
setup()
{
int chosen;
if ((chosen = OF_finddevice("/chosen")) == -1)
OF_exit();
if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) !=
sizeof(stdin) ||
OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) !=
sizeof(stdout))
OF_exit();
}
void
putchar(c)
int c;
{
char ch = c;
if (c == '\n')
putchar('\r');
OF_write(stdout, &ch, 1);
}
int
getchar()
{
unsigned char ch = '\0';
int l;
while ((l = OF_read(stdin, &ch, 1)) != 1)
if (l != -2 && l != 0)
return -1;
return ch;
}