Minimal iop code to set the serial ports to compatible mode automagically,

so that it is not necessary to change settings from MacOS before booting
into OpenBSD; from NetBSD.

1 files changed, 76 insertions, 0 deletions

diff --git a/sys/arch/mac68k/include/iop.h b/sys/arch/mac68k/include/iop.h
new file mode 100644
index 00000000000..01fa00738c9
--- /dev/null
+++ b/sys/arch/mac68k/include/iop.h
@@ -0,0 +1,76 @@
+/*	$OpenBSD: iop.h,v 1.1 2006/01/22 13:53:16 miod Exp $	*/
+/*	$NetBSD: iopreg.h,v 1.7 2005/12/11 12:18:03 christos Exp $	*/
+
+/*
+ * Copyright (c) 2000 Allen Briggs.
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#define SCC_IOP		0
+#define ISM_IOP		1
+
+#define IOP_CS_BYPASS	0x01
+#define IOP_CS_AUTOINC	0x02
+#define IOP_CS_RUN	0x04
+#define IOP_CS_IRQ	0x08
+#define IOP_CS_INT0	0x10
+#define IOP_CS_INT1	0x20
+#define IOP_CS_HWINT	0x40
+#define IOP_CS_DMAINACT	0x80
+
+#define IOP_RESET	(IOP_CS_DMAINACT | IOP_CS_AUTOINC)
+#define IOP_BYPASS	\
+		(IOP_CS_BYPASS | IOP_CS_AUTOINC | IOP_CS_RUN | IOP_CS_DMAINACT)
+#define IOP_INTERRUPT	(IOP_CS_INT0 | IOP_CS_INT1)
+
+typedef struct {
+	volatile u_char	ram_hi;
+	u_char		pad0;
+	volatile u_char	ram_lo;
+	u_char		pad1;
+	volatile u_char	control_status;
+	u_char		pad2[3];
+	volatile u_char	data;
+	u_char		pad3[23];
+	union {
+		struct {
+			volatile u_char sccb_cmd;
+			u_char		pad0;
+			volatile u_char scca_cmd;
+			u_char		pad1;
+			volatile u_char sccb_data;
+			u_char		pad2;
+			volatile u_char scca_data;
+			u_char		pad3;
+		} scc;
+		struct {
+			volatile u_char wdata;
+			u_char		pad0;
+			/* etc... */
+		} iwm;
+	} bypass;
+} IOPHW;
+
+void	iop_serial_compatible(void);