Complete rework of the PowerPC pmap and a number of other bits in the early

boot sequence.

The new pmap.c is based on NetBSD's newer pmap.c (for the mpc6xx processors)
which is 70% faster than the older code that the original pmap.c was based
on.  It has also been based on the framework established by jake's initial
sparc64 pmap.c.

There is no change to how far the kernel gets (it makes it to the mountroot
prompt in psim) but the new pmap code is a lot cleaner.

Obtained from:	NetBSD (pmap code)

1 files changed, 44 insertions, 0 deletions

diff --git a/sys/powerpc/include/sr.h b/sys/powerpc/include/sr.h
new file mode 100644
index 0000000..e87c76a
--- /dev/null
+++ b/sys/powerpc/include/sr.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2002 Benno Rice.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Benno Rice ``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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE_SR_H_
+#define _MACHINE_SR_H_
+
+/*
+ * Bit definitions for segment registers.
+ *
+ * PowerPC Microprocessor Family: The Programming Environments for 32-bit
+ * Microprocessors, section 2.3.5
+ */
+
+#define	SR_TYPE		0x80000000	/* Type selector */
+#define	SR_KS		0x40000000	/* Supervisor-state protection key */
+#define	SR_KP		0x20000000	/* User-state protection key */
+#define SR_N		0x10000000	/* No-execute protection */
+#define	SR_VSID_MASK	0x00ffffff	/* Virtual Segment ID mask */
+
+#endif /* !_MACHINE_SR_H_ */