Bring in NetBSD code used in the PowerPC port.

Reviewed by:	obrien, dfr
Obtained from:	NetBSD

1 files changed, 131 insertions, 0 deletions

diff --git a/sys/powerpc/aim/ofw_machdep.c b/sys/powerpc/aim/ofw_machdep.c
new file mode 100644
index 0000000..dcdc2dd
--- /dev/null
+++ b/sys/powerpc/aim/ofw_machdep.c
@@ -0,0 +1,131 @@
+/*
+ * 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.
+ *
+ * $NetBSD: ofw_machdep.c,v 1.5 2000/05/23 13:25:43 tsubai Exp $
+ */
+
+#ifndef lint
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/disk.h>
+#include <sys/disklabel.h>
+#include <sys/fcntl.h>
+#include <sys/malloc.h>
+#include <sys/stat.h>
+
+#include <dev/ofw/openfirm.h>
+
+#include <machine/powerpc.h>
+
+#define	OFMEM_REGIONS	32
+static struct mem_region OFmem[OFMEM_REGIONS + 1], OFavail[OFMEM_REGIONS + 3];
+
+extern long	ofmsr;
+static int	(*ofwcall)(void *);
+
+/*
+ * This is called during powerpc_init, before the system is really initialized.
+ * It shall provide the total and the available regions of RAM.
+ * Both lists must have a zero-size entry as terminator.
+ * The available regions need not take the kernel into account, but needs
+ * to provide space for two additional entry beyond the terminating one.
+ */
+void
+mem_regions(struct mem_region **memp, struct mem_region **availp)
+{
+	int phandle /*, i, j, cnt*/;
+	
+	/*
+	 * Get memory.
+	 */
+	if ((phandle = OF_finddevice("/memory")) == -1
+	    || OF_getprop(phandle, "reg",
+			  OFmem, sizeof OFmem[0] * OFMEM_REGIONS)
+	       <= 0
+	    || OF_getprop(phandle, "available",
+			  OFavail, sizeof OFavail[0] * OFMEM_REGIONS)
+	       <= 0)
+		panic("no memory?");
+	*memp = OFmem;
+	*availp = OFavail;
+}
+
+void
+set_openfirm_callback(int (*openfirm)(void *))
+{
+
+	ofwcall = openfirm;
+}
+
+int
+openfirmware(void *args)
+{
+	long	oldmsr;
+	int	result;
+
+	__asm(	"\t"
+		"mfmsr  %0\n\t"
+		"mtmsr  %1\n\t"
+		"isync\n"
+		: "=r" (oldmsr)
+		: "r" (ofmsr)
+	);
+
+	result = ofwcall(args);
+
+	__asm(	"\t"
+		"mtmsr  %0\n\t"
+		"isync\n"
+		: : "r" (oldmsr)
+	);
+
+	return (result);
+}
+
+void
+ppc_exit()
+{
+
+	OF_exit();
+}
+
+void
+ppc_boot(str)
+	char *str;
+{
+
+	OF_boot(str);
+}