Add support for the QEMU virt SoC. This is a SoC built depending on the

command line arguments passed in. It will then generate a dtb on the fly,
as such no dts will be added as it may be incorrect.

Relnotes:	yes

4 files changed, 168 insertions, 0 deletions

diff --git a/sys/arm/qemu/files.qemu b/sys/arm/qemu/files.qemu
new file mode 100644
index 0000000..d23524e
--- /dev/null
+++ b/sys/arm/qemu/files.qemu
@@ -0,0 +1,16 @@
+# $FreeBSD$
+
+#
+# Standard ARM support.
+#
+arm/arm/bus_space_base.c		standard
+arm/arm/bus_space_generic.c		standard
+kern/kern_clocksource.c			standard
+
+#
+# Standard qemu virt devices and support.
+#
+arm/arm/gic.c				standard
+arm/arm/generic_timer.c			standard
+arm/qemu/virt_common.c			standard
+arm/qemu/virt_machdep.c			standard
diff --git a/sys/arm/qemu/std.virt b/sys/arm/qemu/std.virt
new file mode 100644
index 0000000..ed94303
--- /dev/null
+++ b/sys/arm/qemu/std.virt
@@ -0,0 +1,15 @@
+# $FreeBSD$
+machine		arm	armv6
+cpu 		CPU_CORTEXA
+makeoptions	CONF_CFLAGS="-march=armv7a"
+makeoptions	ARM_LITTLE_ENDIAN
+options		ARM_L2_PIPT
+
+options		KERNVIRTADDR		= 0xc0000000
+makeoptions	KERNVIRTADDR		= 0xc0000000
+
+options		IPI_IRQ_START=0
+options		IPI_IRQ_END=15
+
+files "../qemu/files.qemu"
+
diff --git a/sys/arm/qemu/virt_common.c b/sys/arm/qemu/virt_common.c
new file mode 100644
index 0000000..fc02247
--- /dev/null
+++ b/sys/arm/qemu/virt_common.c
@@ -0,0 +1,45 @@
+/*-
+ * Copyright (c) 2015 Andrew Turner
+ * 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 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 <dev/fdt/fdt_common.h>
+
+#include <machine/intr.h>
+
+struct fdt_fixup_entry fdt_fixup_table[] = {
+	{ NULL, NULL }
+};
+
+fdt_pic_decode_t fdt_pic_table[] = {
+	&gic_decode_fdt,
+	NULL
+};
diff --git a/sys/arm/qemu/virt_machdep.c b/sys/arm/qemu/virt_machdep.c
new file mode 100644
index 0000000..6b0cba2
--- /dev/null
+++ b/sys/arm/qemu/virt_machdep.c
@@ -0,0 +1,92 @@
+/*-
+ * Copyright (c) 2015 Andrew Turner
+ * 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 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 "opt_platform.h"
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#define _ARM32_BUS_DMA_PRIVATE
+#include <sys/param.h>
+#include <sys/systm.h>
+
+#include <vm/vm.h>
+
+#include <machine/bus.h>
+#include <machine/devmap.h>
+#include <machine/platform.h>
+#include <machine/platformvar.h>
+
+#include "platform_if.h"
+
+struct arm32_dma_range *
+bus_dma_get_range(void)
+{
+
+	return (NULL);
+}
+
+int
+bus_dma_get_range_nb(void)
+{
+
+	return (0);
+}
+
+void
+cpu_reset(void)
+{
+
+	while (1);
+}
+
+static vm_offset_t
+virt_lastaddr(platform_t plat)
+{
+
+	return (arm_devmap_lastaddr());
+}
+
+/*
+ * Set up static device mappings.
+ */
+static int
+virt_devmap_init(platform_t plat)
+{
+
+	arm_devmap_add_entry(0x09000000, 0x100000); /* Uart */
+	return (0);
+}
+
+static platform_method_t virt_methods[] = {
+	PLATFORMMETHOD(platform_devmap_init,	virt_devmap_init),
+	PLATFORMMETHOD(platform_lastaddr,	virt_lastaddr),
+
+	PLATFORMMETHOD_END,
+};
+
+FDT_PLATFORM_DEF(virt, "virt", 0, "linux,dummy-virt");