NetBSD-5.0.2/sys/arch/ofppc/stand/ofwboot/Locore.c
/* $NetBSD: Locore.c,v 1.21 2008/02/12 04:27:46 garbled 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 "openfirm.h"
#include <sys/param.h>
#include <lib/libsa/stand.h>
#include <machine/cpu.h>
static int (*openfirmware_entry)(void *);
static int openfirmware(void *);
void startup(void *, int, int (*)(void *), char *, int)
__attribute__((__used__));
static void setup(void);
/* this pad gets the rodata laignment right, don't EVER fiddle it */
char *pad __attribute__((__aligned__ (8))) = "pad";
int stack[8192/4 + 4] __attribute__((__aligned__ (4), __used__));
char *heapspace __attribute__((__aligned__ (4)));
char altheap[0x20000] __attribute__((__aligned__ (4)));
static int
openfirmware(void *arg)
{
int r;
__asm volatile ("sync; isync");
r = openfirmware_entry(arg);
__asm volatile ("sync; isync");
return r;
}
void
startup(void *vpd, int res, int (*openfirm)(void *), char *arg, int argl)
{
openfirmware_entry = openfirm;
setup();
main();
OF_exit();
}
__dead void
OF_exit(void)
{
static struct {
char *name;
int nargs;
int nreturns;
} args = {
"exit",
0,
0
};
openfirmware(&args);
for (;;); /* just in case */
}
__dead void
OF_boot(char *bootspec)
{
static struct {
char *name;
int nargs;
int nreturns;
char *bootspec;
} args = {
"boot",
1,
0,
};
args.bootspec = bootspec;
openfirmware(&args);
for (;;); /* just in case */
}
int
OF_finddevice(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(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(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(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(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(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(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, %p, %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(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, %p, %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(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_alloc_mem(u_int size)
{
static struct {
char *name;
int nargs;
int nreturns;
u_int size;
void *baseaddr;
} args = {
"alloc-mem",
1,
1,
};
#ifdef OFW_DEBUG
printf("alloc-mem %x -> ", size);
#endif
if (openfirmware(&args) == -1) {
#ifdef OFW_DEBUG
printf("lose\n");
#endif
return (void *)-1;
}
#ifdef OFW_DEBUG
printf("%p\n", args.baseaddr);
#endif
return args.baseaddr;
}
void *
OF_claim(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(%p, %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("%p\n", args.baseaddr);
#endif
return args.baseaddr;
}
void
OF_release(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(%p, %x)\n", virt, size);
#endif
args.virt = virt;
args.size = size;
openfirmware(&args);
}
int
OF_milliseconds(void)
{
static struct {
char *name;
int nargs;
int nreturns;
int ms;
} args = {
"milliseconds",
0,
1,
};
openfirmware(&args);
return args.ms;
}
#ifdef __notyet__
void
OF_chain(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(void *virt, u_int size, boot_entry_t entry, void *arg, u_int len)
{
/*
* This is a REALLY dirty hack till the firmware gets this going
*/
#if 0
OF_release(virt, size);
#endif
entry(0, 0, openfirmware_entry, arg, len);
}
#endif
static int stdin;
static int stdout;
static int memory;
static void
setup(void)
{
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();
//printf("Allocating 0x20000 bytes of ram for boot\n");
heapspace = OF_claim(0, 0x20000, NBPG);
if (heapspace == (char *)-1) {
printf("WARNING: Failed to alloc ram, using bss\n");
setheap(&altheap, &altheap[0x20000]);
} else
setheap(heapspace, heapspace+0x20000);
}
void
putchar(int c)
{
char ch = c;
if (c == '\n')
putchar('\r');
OF_write(stdout, &ch, 1);
}
int
getchar(void)
{
unsigned char ch = '\0';
int l;
while ((l = OF_read(stdin, &ch, 1)) != 1)
if (l != -2 && l != 0)
return -1;
return ch;
}
#ifdef OFWDUMP
static int
OF_peer(int phandle)
{
static struct {
const char *name;
int nargs;
int nreturns;
int phandle;
int sibling;
} args = {
"peer",
1,
1,
};
args.phandle = phandle;
if (openfirmware(&args) == -1)
return 0;
return args.sibling;
}
static int
OF_child(int phandle)
{
static struct {
const char *name;
int nargs;
int nreturns;
int phandle;
int child;
} args = {
"child",
1,
1,
};
args.phandle = phandle;
if (openfirmware(&args) == -1)
return 0;
return args.child;
}
int
OF_nextprop(int handle, const char *prop, void *nextprop)
{
static struct {
const char *name;
int nargs;
int nreturns;
int phandle;
const char *prop;
char *buf;
int flag;
} args = {
"nextprop",
3,
1,
};
args.phandle = handle;
args.prop = prop;
args.buf = nextprop;
if (openfirmware(&args) == -1)
return -1;
return args.flag;
}
static int
OF_package_to_path(int phandle, char *buf, int buflen)
{
static struct {
const char *name;
int nargs;
int nreturns;
int phandle;
char *buf;
int buflen;
int length;
} args = {
"package-to-path",
3,
1,
};
if (buflen > 4096)
return -1;
args.phandle = phandle;
args.buf = buf;
args.buflen = buflen;
if (openfirmware(&args) < 0)
return -1;
if (args.length > buflen)
args.length = buflen;
return args.length;
}
void
dump_ofwtree(int node)
{
int peer, child, namelen, dlen, i;
char namebuf[33], newnamebuf[33];
char path[256], data[256];
for (peer = node; peer; peer = OF_peer(peer)) {
printf("\nnode: 0x%x ", peer);
if (OF_package_to_path(peer, path, 512) >= 0)
printf("path=%s", path);
printf("\n");
namebuf[0] = '\0';
namelen = OF_nextprop(peer, namebuf, &newnamebuf);
while (namelen >= 0) {
/*printf("namelen == %d namebuf=%s new=%s\n", namelen,
namebuf, newnamebuf);*/
//newnamebuf[namelen] = '\0';
strcpy(namebuf, newnamebuf);
printf(" %s :", newnamebuf);
dlen = OF_getprop(peer, newnamebuf, data, 256);
if (dlen > 0) {
if (data[0] < 0177)
printf(" %s\n", data);
else
printf("\n");
printf(" ");
for (i=0; i < dlen && i < 256; i++) {
if (data[i] < 0x10)
printf("0");
printf("%x", data[i]);
if ((i+1)%4 == 0)
printf(" ");
if ((i+1)%32 == 0)
printf("\n ");
}
}
printf("\n");
namelen = OF_nextprop(peer, namebuf, &newnamebuf);
if (newnamebuf[0] == '\0' ||
strcmp(namebuf, newnamebuf) == 0)
break;
}
child = OF_child(peer);
if (child > 0)
dump_ofwtree(child);
}
}
#endif /* OFWDUMP */