Initial FDT infrastructure elements for ARM.

Reviewed by:	imp
Sponsored by:	The FreeBSD Foundation

1 files changed, 88 insertions, 0 deletions

diff --git a/sys/dev/fdt/fdt_arm.c b/sys/dev/fdt/fdt_arm.c
new file mode 100644
index 0000000..1c13e06
--- /dev/null
+++ b/sys/dev/fdt/fdt_arm.c
@@ -0,0 +1,88 @@
+/*-
+ * Copyright (c) 2010 The FreeBSD Foundation
+ * All rights reserved.
+ *
+ * This software was developed by Semihalf under sponsorship from
+ * the FreeBSD Foundation.
+ *
+ * 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 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 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/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#include <dev/ofw/openfirm.h>
+
+#include <machine/fdt.h>
+
+#include "ofw_bus_if.h"
+
+static void
+fdt_fixup_busfreq(phandle_t root)
+{
+	phandle_t sb;
+	pcell_t freq;
+
+	/*
+	 * This fixup sets the simple-bus bus-frequency property.
+	 */
+
+	if ((sb = fdt_find_compatible(root, "simple-bus", 1)) == 0)
+		return;
+
+	freq = cpu_to_fdt32(get_tclk());
+	OF_setprop(sb, "bus-frequency", (void *)&freq, sizeof(freq));
+}
+
+struct fdt_fixup_entry fdt_fixup_table[] = {
+	{ "mrvl,DB-88F6281", &fdt_fixup_busfreq },
+	{ NULL, NULL }
+};
+
+static int
+fdt_pic_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
+    int *pol)
+{
+
+	if (!fdt_is_compatible(node, "mrvl,pic"))
+		return (ENXIO);
+
+	*interrupt = fdt32_to_cpu(intr[0]);
+	*trig = INTR_TRIGGER_CONFORM;
+	*pol = INTR_POLARITY_CONFORM;
+
+	return (0);
+}
+
+fdt_pic_decode_t fdt_pic_table[] = {
+	&fdt_pic_decode_ic,
+	NULL
+};