Introduce basic support for Marvell families of system-on-chip ARM devices:

  *  Orion
     - 88F5181
     - 88F5182
     - 88F5281

  * Kirkwood
     - 88F6281

  * Discovery
     - MV78100

The above families of SOCs are built around CPU cores compliant with ARMv5TE
instruction set architecture definition. They share a number of integrated
peripherals. This commit brings support for the following basic elements:

  * GPIO
  * Interrupt controller
  * L1, L2 cache
  * Timers, watchdog, RTC
  * TWSI (I2C)
  * UART

Other peripherals drivers will be introduced separately.

Reviewed by:	imp, marcel, stass (Thanks guys!)
Obtained from:	Marvell, Semihalf

1 files changed, 162 insertions, 0 deletions

diff --git a/sys/arm/mv/bus_space.c b/sys/arm/mv/bus_space.c
new file mode 100644
index 0000000..2cdc454
--- /dev/null
+++ b/sys/arm/mv/bus_space.c
@@ -0,0 +1,162 @@
+/*-
+ * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
+ * All rights reserved.
+ *
+ * Developed by Semihalf.
+ *
+ * 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. Neither the name of MARVELL nor the names of contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+
+#include <machine/bus.h>
+
+/*
+ * Bus space functions for Marvell SoC family
+ */
+
+/* Prototypes for all the bus_space structure functions */
+bs_protos(generic);
+bs_protos(generic_armv4);
+
+/*
+ * The obio bus space tag.  This is constant for all instances, so
+ * we never have to explicitly "create" it.
+ */
+static struct bus_space _base_tag = {
+	/* cookie */
+	(void *) 0,
+
+	/* mapping/unmapping */
+	generic_bs_map,
+	generic_bs_unmap,
+	generic_bs_subregion,
+
+	/* allocation/deallocation */
+	generic_bs_alloc,
+	generic_bs_free,
+
+	/* barrier */
+	generic_bs_barrier,
+
+	/* read (single) */
+	generic_bs_r_1,
+	generic_armv4_bs_r_2,
+	generic_bs_r_4,
+	NULL,
+
+	/* read multiple */
+	generic_bs_rm_1,
+	generic_armv4_bs_rm_2,
+	generic_bs_rm_4,
+	NULL,
+
+	/* read region */
+	generic_bs_rr_1,
+	generic_armv4_bs_rr_2,
+	generic_bs_rr_4,
+	NULL,
+
+	/* write (single) */
+	generic_bs_w_1,
+	generic_armv4_bs_w_2,
+	generic_bs_w_4,
+	NULL,
+
+	/* write multiple */
+	generic_bs_wm_1,
+	generic_armv4_bs_wm_2,
+	generic_bs_wm_4,
+	NULL,
+
+	/* write region */
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+
+	/* set multiple */
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+
+	/* set region */
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+
+	/* copy */
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+
+	/* read stream (single) */
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+
+	/* read multiple stream */
+	NULL,
+	generic_armv4_bs_rm_2,		/* bus_space_read_multi_stream_2 */
+	NULL,
+	NULL,
+
+	/* read region stream */
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+
+	/* write stream (single) */
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+
+	/* write multiple stream */
+	NULL,
+	generic_armv4_bs_wm_2,		/* bus_space_write_multi_stream_2 */
+	NULL,
+	NULL,
+
+	/* write region stream */
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
+bus_space_tag_t obio_tag = &_base_tag;