Import support for the Atmel AT91RM9200 CPU/Microcontroller. This SoC

is a ARM920T based CPU with a bunch of built-in peripherals.  The
inital import supports the SPI bus, the TWI bus (although iicbus
integration is not complete), the uarts, the system timer and the
onboard ethernet.  Support for the Kwikbyte KB9202
(http://www.kwikbyte.com) board is also included, although there's no
reason why the 9200 and the 9201 wouldn't also work.  Primitive
support for running under the skyeye emulator is also provided
(although skyeye's support for the AT91RM9200 is a little weak).

The code has been structured so that other members of Atmel's arm family can
be supported in the future.  The AT91SAM9260 is not presently supported
due to lack of hardware.  The arm7tdmi families are also not supported
becasue they lack an MMU.

Many thanks to cognet@ for his help and assistance in bringing up this
board.  He did much of the vm work and wrote parts of the uart and
system timer code as well as the bus space implementation.

The system boots to single user w/o problem, although the serial
console is a little slow and the ethernet driver is still in flux.

This work was sponsored by Timing Solutions, Corporation.  I am
grateful to their support of the FreeBSD project in this manner.

1 files changed, 61 insertions, 0 deletions

diff --git a/sys/arm/at91/at91_twiio.h b/sys/arm/at91/at91_twiio.h
new file mode 100644
index 0000000..2e24439
--- /dev/null
+++ b/sys/arm/at91/at91_twiio.h
@@ -0,0 +1,61 @@
+/*-
+ * Copyright (c) 2006 M. Warner Losh.  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 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _ARM_AT91_AT91_TWIIO_H
+#define _ARM_AT91_AT91_TWIIO_H
+
+#include <sys/ioccom.h>
+
+struct at91_twi_io
+{
+	int	dadr;			/* Device address */
+	int	type;			/* read/write */
+#define TWI_IO_READ_MASTER	1
+#define TWI_IO_WRITE_MASTER	2
+	int	iadrsz;			/* Internal addr size */
+	uint32_t iadr;			/* Interbak addr */
+	size_t  xfer_len;		/* Size to transfer */
+	caddr_t xfer_buf;		/* buffer for xfer */
+};
+
+struct at91_twi_clock
+{
+	int	ckdiv;			/* Clock divider */
+	int	high_rate;		/* rate of clock high period */
+	int	low_rate;		/* rate of clock low period */
+};
+
+/** TWIIOCXFER: Do a two-wire transfer
+ */
+#define TWIIOCXFER	_IOW('x', 1, struct at91_twi_io)
+
+/** TWIIOCSETCLOCK: Sets the clocking parameters for this operation.
+ */
+#define TWIIOCSETCLOCK _IOW('x', 2, struct at91_twi_clock)
+
+#endif /* !_ARM_AT91_AT91_TWIIO_H */
+
+