Copyright notices, licensing terms, author attributions.

GNUmakefile

@@ -5,6 +5,10 @@
 #	Recursive Make Considered Harmful
 #	http://aegis.sourceforge.net/auug97.pdf
 #
+# Copyright (C) 2003 Massachusetts Institute of Technology 
+# See section "MIT License" in the file LICENSES for licensing terms.
+# Primary authors: Bryan Ford, Eddie Kohler, Austin Clemens
+#
 OBJDIR := obj
 
 ifdef LAB

LICENSES

@@ -0,0 +1,93 @@
+PIOS is derived directly from JOS and indirectly from various open source
+software, the licenses for which are included here.  See the individual
+source files for information about which license(s) apply to each file.
+
+
+Terms of the MIT License:
+/*
+ * Copyright (C) 1997 Massachusetts Institute of Technology 
+ *
+ * This software is being provided by the copyright holders under the
+ * following license. By obtaining, using and/or copying this software,
+ * you agree that you have read, understood, and will comply with the
+ * following terms and conditions:
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose and without fee or royalty is
+ * hereby granted, provided that the full text of this NOTICE appears on
+ * ALL copies of the software and documentation or portions thereof,
+ * including modifications, that you make.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO
+ * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED. BY WAY OF EXAMPLE,
+ * BUT NOT LIMITATION, COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR
+ * WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR
+ * THAT THE USE OF THE SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY
+ * THIRD PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS. COPYRIGHT
+ * HOLDERS WILL BEAR NO LIABILITY FOR ANY USE OF THIS SOFTWARE OR
+ * DOCUMENTATION.
+ *
+ * The name and trademarks of copyright holders may NOT be used in
+ * advertising or publicity pertaining to the software without specific,
+ * written prior permission. Title to copyright in this software and any
+ * associated documentation will at all times remain with copyright
+ * holders. See the file AUTHORS which should have accompanied this software
+ * for a list of all copyright holders.
+ *
+ * This file may be derived from previously copyrighted software. This
+ * copyright applies only to those changes made by the copyright
+ * holders listed in the AUTHORS file. The rest of this file is covered by
+ * the copyright notices, if any, listed below.
+ */
+
+
+Terms of the BSD License:
+/*
+ * 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 the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
+ */
+
+Terms of the RSA License:
+/*
+ * License to copy and use this software is granted provided that it is
+ * identified as the "RSA Data Security, Inc. MD5 Message-Digest Algorithm"
+ * in all material mentioning or referencing this software or this function.
+ * 
+ * License is also granted to make and use derivative works provided that such
+ * works are identified as "derived from the RSA Data Security, Inc. MD5
+ * Message-Digest Algorithm" in all material mentioning or referencing the
+ * derived work.
+ * 
+ * RSA Data Security, Inc. makes no representations concerning either the
+ * merchantability of this software or the suitability of this software for
+ * any particular purpose. It is provided "as is" without express or implied
+ * warranty of any kind.
+ * 
+ * These notices must be retained in any copies of any part of this
+ * documentation and/or software.
+ */

boot/Makefrag

@@ -4,6 +4,10 @@
 # you must run GNU make in the top-level directory
 # where the GNUmakefile is located.
 #
+# Copyright (C) 2003 Massachusetts Institute of Technology 
+# See section "MIT License" in the file LICENSES for licensing terms.
+# Primary authors: Bryan Ford, Eddie Kohler
+#
 
 OBJDIRS += boot
 

boot/boot.S

@@ -1,4 +1,12 @@
 #if LAB >= 1
+/*
+ * Boot loader entrypoint and protected mode setup.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology 
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from the MIT Exokernel and JOS.
+ */
 #include <inc/mmu.h>
 
 # Start the CPU: switch to 32-bit protected mode, jump into C.

boot/bootother.S

@@ -1,4 +1,12 @@
 #if LAB >= 2
+/*
+ * Boot code for Application Processors (APs) in a multiprocessor system.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology 
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from the MIT Exokernel and JOS.
+ */
 
 #include <inc/mmu.h>
 

boot/main.c

@@ -1,4 +1,12 @@
 #if LAB >= 1
+/*
+ * Boot loader code to read the kernel image from disk and start it.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology 
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from the MIT Exokernel and JOS.
+ */
 #include <inc/x86.h>
 #include <inc/elf.h>
 

boot/sign.pl

@@ -1,4 +1,13 @@
 #!/usr/bin/perl
+#
+# This script pads a boot block to the required 512 byte sector size
+# and attaches the magic "signature" (0x55aa) at the end.
+#
+# Copyright (C) 1997 Massachusetts Institute of Technology 
+# See section "MIT License" in the file LICENSES for licensing terms.
+#
+# Derived from the MIT Exokernel and JOS.
+#
 
 open(BB, $ARGV[0]) || die "open $ARGV[0]: $!";
 

dev/e100.c

@@ -1,3 +1,12 @@
+/*
+ * Intel E100 network interface device driver.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Primary Author: Silas Boyd-Wickizer at MIT.
+ * Adapted for PIOS by Bryan Ford at Yale University.
+ */
 #if LAB >= 5
 
 #include <inc/x86.h>

dev/e100.h

@@ -1,4 +1,14 @@
 #if LAB >= 5
+/*
+ * Intel E100 network interface device driver definitions.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Primary Author: Silas Boyd-Wickizer at MIT.
+ * Adapted for PIOS by Bryan Ford at Yale University.
+ */
+
 #ifndef PIOS_KERN_E100_H
 #define PIOS_KERN_E100_H
 

dev/ide.c

@@ -3,6 +3,12 @@
  * Minimal PIO-based (non-interrupt-driven) IDE driver code.
  * For information about what all this IDE/ATA magic means,
  * see the materials available on the class references page.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from the MIT Exokernel and JOS.
+ * Primary author: Eddie Kohler
  */
 
 #include <inc/stdio.h>

dev/ide.h

@@ -1,6 +1,14 @@
 #if LAB >= 99
-// IDE disk device driver definitions.
-// See COPYRIGHT for copyright information.
+/*
+ * IDE disk device driver definitions.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from the MIT Exokernel and JOS.
+ * Primary author: Eddie Kohler
+ */
+
 #ifndef PIOS_DEV_IDE_H
 #define PIOS_DEV_IDE_H
 #ifndef PIOS_KERNEL

dev/ioapic.c

@@ -1,8 +1,15 @@
 #if LAB >= 2
-// The I/O APIC manages hardware interrupts for an SMP system.
-// http://www.intel.com/design/chipsets/datashts/29056601.pdf
-// See also picirq.c.
-// This source file adapted from xv6.
+/*
+ * The I/O APIC manages hardware interrupts for an SMP system.
+ * http://www.intel.com/design/chipsets/datashts/29056601.pdf
+ * See also pic.c, which handles the old pre-SMP interrupt controller.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from xv6 and FreeBSD code.
+ * Adapted for PIOS by Bryan Ford at Yale University.
+ */
 
 #include <inc/types.h>
 #include <inc/trap.h>

dev/ioapic.h

@@ -1,18 +1,21 @@
 #if LAB >= 2
-// I/O APIC (Advanced Programmable Interrupt Controller) definitions.
-// Adapted from xv6.
-// See COPYRIGHT for copyright information.
+/*
+ * I/O APIC (Advanced Programmable Interrupt Controller) definitions.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from xv6 and FreeBSD code.
+ * Adapted for PIOS by Bryan Ford at Yale University.
+ */
 #ifndef PIOS_DEV_IOAPIC_H
 #define PIOS_DEV_IOAPIC_H
 #ifndef PIOS_KERNEL
 # error "This is a kernel header; user programs should not #include it"
 #endif
 
-
 void ioapic_init(void);
-
 void ioapic_enable(int irq, int apicid);
 
-
 #endif /* !PIOS_DEV_IOAPIC_H */
 #endif // LAB >= 2

dev/kbd.c

@@ -1,4 +1,15 @@
-// Keyboard input code
+/*
+ * PC keyboard input device driver.
+ *
+ * Copyright (c) 2010 Yale University.
+ * Copyright (c) 1993, 1994, 1995 Charles Hannum.
+ * Copyright (c) 1990 The Regents of the University of California.
+ * See section "BSD License" in the file LICENSES for licensing terms.
+ *
+ * This code is derived from the NetBSD pcons driver, and in turn derived
+ * from software contributed to Berkeley by William Jolitz and Don Ahn.
+ * Adapted for PIOS by Bryan Ford at Yale University.
+ */
 
 #include <inc/types.h>
 #include <inc/stdio.h>

dev/kbd.h

@@ -1,5 +1,16 @@
-// PC keyboard input.
-// See COPYRIGHT for copyright information.
+/*
+ * PC keyboard input device driver.
+ *
+ * Copyright (c) 2010 Yale University.
+ * Copyright (c) 1993, 1994, 1995 Charles Hannum.
+ * Copyright (c) 1990 The Regents of the University of California.
+ * See section "BSD License" in the file LICENSES for licensing terms.
+ *
+ * This code is derived from the NetBSD pcons driver, and in turn derived
+ * from software contributed to Berkeley by William Jolitz and Don Ahn.
+ * Adapted for PIOS by Bryan Ford at Yale University.
+ */
+
 #ifndef PIOS_KERN_KBD_H_
 #define PIOS_KERN_KBD_H_
 #ifndef PIOS_KERNEL

dev/lapic.c

@@ -1,7 +1,14 @@
 #if LAB >= 2
-// The local APIC manages internal (non-I/O) interrupts.
-// See Chapter 8 & Appendix C of Intel processor manual volume 3.
-// Adapted from xv6.
+/*
+ * The local APIC manages internal (non-I/O) interrupts.
+ * See Chapter 8 & Appendix C of Intel processor manual volume 3.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from xv6 from MIT and Plan 9 from Bell Labs.
+ * Adapted for PIOS by Bryan Ford at Yale University.
+ */
 
 #include <inc/types.h>
 #include <inc/trap.h>

dev/lapic.h

@@ -1,7 +1,14 @@
 #if LAB >= 2
-// Local APIC (Advanced Programmable Interrupt Controller) definitions.
-// Adapted from xv6.
-// See COPYRIGHT for copyright information.
+/*
+ * Local APIC (Advanced Programmable Interrupt Controller) definitions.
+ *
+ * Copyright (C) 1997 Massachusetts Institute of Technology
+ * See section "MIT License" in the file LICENSES for licensing terms.
+ *
+ * Derived from xv6 from MIT and Plan 9 from Bell Labs.
+ * Adapted for PIOS by Bryan Ford at Yale University.
+ */
+
 #ifndef PIOS_DEV_LAPIC_H
 #define PIOS_DEV_LAPIC_H
 #ifndef PIOS_KERNEL