Check-in of powerpc kernel support.

NOTE: This will not work until the other pieces are checked in.
This is primarily the NetBSD powerpc port, with modifications
to support ELF. 

1 files changed, 472 insertions, 0 deletions

diff --git a/sys/arch/powerpc/stand/Locore.c b/sys/arch/powerpc/stand/Locore.c
new file mode 100644
index 00000000000..97b5070da65
--- /dev/null
+++ b/sys/arch/powerpc/stand/Locore.c
@@ -0,0 +1,472 @@
+/*	$NetBSD: Locore.c,v 1.1 1996/09/30 16:34:58 ws 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 <stand.h>
+#include <openfirm.h>
+
+#include <machine/cpu.h>
+
+static int (*openfirmware)(void *);
+
+static void
+setup();
+
+#define __dead
+
+__dead void
+_start(vpd, res, openfirm, arg, argl)
+	void *vpd;
+	int res;
+	int (*openfirm)(void *);
+	char *arg;
+	int argl;
+{
+	extern char etext;
+
+#ifdef	FIREPOWERBUGS
+	syncicache((void *)RELOC, &etext - (char *)RELOC);
+#endif
+	openfirmware = openfirm;	/* Save entry to Open Firmware */
+	setup();
+	main(arg, argl);
+	exit();
+}
+
+__dead void
+_rtt()
+{
+	static struct {
+		char *name;
+		int nargs;
+		int nreturns;
+	} args = {
+		"exit",
+		0,
+		0
+	};
+
+	openfirmware(&args);
+	while (1);			/* just in 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,
+	};
+	
+	args.dname = dname;
+	if (openfirmware(&args) == -1)
+		return -1;
+	return args.handle;
+}
+
+void
+OF_close(handle)
+	int handle;
+{
+	static struct {
+		char *name;
+		int nargs;
+		int nreturns;
+		int handle;
+	} args = {
+		"close",
+		1,
+		0,
+	};
+	
+	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,
+	};
+
+	args.ihandle = handle;
+	args.addr = addr;
+	args.len = len;
+	if (openfirmware(&args) == -1)
+		return -1;
+	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,
+	};
+
+	args.ihandle = handle;
+	args.addr = addr;
+	args.len = len;
+	if (openfirmware(&args) == -1)
+		return -1;
+	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,
+	};
+	
+	args.handle = handle;
+	args.poshi = (int)(pos >> 32);
+	args.poslo = (int)pos;
+	if (openfirmware(&args) == -1)
+		return -1;
+	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	FIREPOWERBUGS
+	/*
+	 * Bug with FirePower machines (actually Firmworks OFW)
+	 */
+	if (virt)
+		return virt;
+#endif
+	args.virt = virt;
+	args.size = size;
+	args.align = align;
+	if (openfirmware(&args) == -1)
+		return (void *)-1;
+	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,
+	};
+	
+	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
+	 */
+	OF_release(virt, size);
+	entry(0, 0, openfirmware, arg, len);
+}
+#endif
+
+static int stdin;
+static int stdout;
+
+static void
+setup()
+{
+	int chosen;
+	
+	if ((chosen = OF_finddevice("/chosen")) == -1)
+		_rtt();
+	if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) != sizeof(stdin)
+	    || OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) != sizeof(stdout))
+		_rtt();
+}
+
+void
+putchar(c)
+	int c;
+{
+	char ch = c;
+
+	if (c == '\n')
+		putchar('\r');
+	OF_write(stdout, &ch, 1);
+}
+
+int
+getchar()
+{
+	unsigned char ch;
+	int l;
+
+	while ((l = OF_read(stdin, &ch, 1)) != 1)
+		if (l != -2)
+			return -1;
+	return ch;
+}