Add barebone Raspberry Pi port. Supported parts:

  - Interrupts controller
  - Watchdog
  - System timer
  - Framebuffer (hardcoded resolution/bpp)

13 files changed, 2670 insertions, 0 deletions

diff --git a/sys/arm/broadcom/bcm2835/bcm2835_fb.c b/sys/arm/broadcom/bcm2835/bcm2835_fb.c
new file mode 100644
index 0000000..f6a4d7b
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_fb.c
@@ -0,0 +1,714 @@
+/*-
+ * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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 <sys/bio.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/endian.h>
+#include <sys/kernel.h>
+#include <sys/kthread.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/queue.h>
+#include <sys/resource.h>
+#include <sys/rman.h>
+#include <sys/time.h>
+#include <sys/timetc.h>
+#include <sys/fbio.h>
+#include <sys/consio.h>
+
+#include <sys/kdb.h>
+
+#include <machine/bus.h>
+#include <machine/cpu.h>
+#include <machine/cpufunc.h>
+#include <machine/resource.h>
+#include <machine/frame.h>
+#include <machine/intr.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/fb/fbreg.h>
+#include <dev/syscons/syscons.h>
+
+#include <arm/broadcom/bcm2835/bcm2835_mbox.h>
+#include <arm/broadcom/bcm2835/bcm2835_vcbus.h>
+
+#define	BCMFB_FONT_HEIGHT	16
+
+#define FB_WIDTH		640
+#define FB_HEIGHT		480
+
+struct bcm_fb_config {
+	uint32_t	xres;
+	uint32_t	yres;
+	uint32_t	vxres;
+	uint32_t	vyres;
+	uint32_t	pitch;
+	uint32_t	bpp;
+	uint32_t	xoffset;
+	uint32_t	yoffset;
+	/* Filled by videocore */
+	uint32_t	base;
+	uint32_t	screen_size;
+};
+
+struct bcmsc_softc {
+	device_t		dev;
+	struct cdev *		cdev;
+	struct mtx		mtx;
+	bus_dma_tag_t		dma_tag;
+	bus_dmamap_t		dma_map;
+	struct bcm_fb_config*	fb_config;
+	bus_addr_t		fb_config_phys;
+	struct intr_config_hook	init_hook;
+
+};
+
+struct video_adapter_softc {
+	/* Videoadpater part */
+	video_adapter_t	va;
+	int		console;
+
+	intptr_t	fb_addr;
+	unsigned int	fb_size;
+
+	unsigned int	height;
+	unsigned int	width;
+	unsigned int	stride;
+
+	unsigned int	xmargin;
+	unsigned int	ymargin;
+
+	unsigned char	*font;
+	int		initialized;
+};
+
+static struct bcmsc_softc *bcmsc_softc;
+static struct video_adapter_softc va_softc;
+
+#define	bcm_fb_lock(_sc)	mtx_lock(&(_sc)->mtx)
+#define	bcm_fb_unlock(_sc)	mtx_unlock(&(_sc)->mtx)
+#define	bcm_fb_lock_assert(sc)	mtx_assert(&(_sc)->mtx, MA_OWNED)
+
+static int bcm_fb_probe(device_t);
+static int bcm_fb_attach(device_t);
+static void bcm_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err);
+
+static void
+bcm_fb_init(void *arg)
+{
+	struct bcmsc_softc *sc = arg;
+	struct video_adapter_softc *va_sc = &va_softc;
+	int err;
+	volatile struct bcm_fb_config*	fb_config = sc->fb_config;
+
+	/* TODO: replace it with FDT stuff */
+	fb_config->xres = FB_WIDTH;
+	fb_config->yres = FB_HEIGHT;
+	fb_config->vxres = 0;
+	fb_config->vyres = 0;
+	fb_config->xoffset = 0;
+	fb_config->yoffset = 0;
+	fb_config->bpp = 24;
+	fb_config->base = 0;
+	fb_config->pitch = 0;
+	fb_config->screen_size = 0;
+
+	bus_dmamap_sync(sc->dma_tag, sc->dma_map,
+		BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
+	bcm_mbox_write(BCM2835_MBOX_CHAN_FB, sc->fb_config_phys);
+	bcm_mbox_read(BCM2835_MBOX_CHAN_FB, &err);
+	bus_dmamap_sync(sc->dma_tag, sc->dma_map,
+		BUS_DMASYNC_POSTREAD);
+
+	if (err == 0) {
+		device_printf(sc->dev, "%dx%d(%dx%d@%d,%d) %dbpp\n", 
+			fb_config->xres, fb_config->yres,
+			fb_config->vxres, fb_config->vyres,
+			fb_config->xoffset, fb_config->yoffset,
+			fb_config->bpp);
+
+
+		device_printf(sc->dev, "pitch %d, base 0x%08x, screen_size %d\n", 
+			fb_config->pitch, fb_config->base,
+			fb_config->screen_size);
+
+		if (fb_config->base) {
+			va_sc->fb_addr = (intptr_t)pmap_mapdev(fb_config->base, fb_config->screen_size);
+			va_sc->fb_size = fb_config->screen_size;
+			va_sc->stride = fb_config->pitch;
+		}
+	}
+	else
+		device_printf(sc->dev, "Failed to set framebuffer info\n");
+
+	config_intrhook_disestablish(&sc->init_hook);
+}
+
+static int
+bcm_fb_probe(device_t dev)
+{
+	int error;
+
+	if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-fb"))
+		return (ENXIO);
+
+	device_set_desc(dev, "BCM2835 framebuffer device");
+
+	error = sc_probe_unit(device_get_unit(dev), 
+	    device_get_flags(dev) | SC_AUTODETECT_KBD);
+
+	if (error != 0)
+		return (error);
+
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+bcm_fb_attach(device_t dev)
+{
+	struct bcmsc_softc *sc = device_get_softc(dev);
+	int dma_size = sizeof(struct bcm_fb_config);
+	int err;
+
+	if (bcmsc_softc)
+		return (ENXIO);
+
+	bcmsc_softc = sc;
+
+	sc->dev = dev;
+	mtx_init(&sc->mtx, "bcm2835fb", "fb", MTX_DEF);
+
+	err = bus_dma_tag_create(
+	    bus_get_dma_tag(sc->dev),
+	    PAGE_SIZE, 0,		/* alignment, boundary */
+	    BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
+	    BUS_SPACE_MAXADDR,		/* highaddr */
+	    NULL, NULL,			/* filter, filterarg */
+	    dma_size, 1,		/* maxsize, nsegments */
+	    dma_size, 0,		/* maxsegsize, flags */
+	    NULL, NULL,			/* lockfunc, lockarg */
+	    &sc->dma_tag);
+
+	err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->fb_config,
+	    0, &sc->dma_map);
+	if (err) {
+		device_printf(dev, "cannot allocate framebuffer\n");
+		goto fail;
+	}
+
+	err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->fb_config,
+	    dma_size, bcm_fb_dmamap_cb, &sc->fb_config_phys, BUS_DMA_NOWAIT);
+
+	if (err) {
+		device_printf(dev, "cannot load DMA map\n");
+		goto fail;
+	}
+
+	err = (sc_attach_unit(device_get_unit(dev),
+	    device_get_flags(dev) | SC_AUTODETECT_KBD));
+
+	if (err) {
+		device_printf(dev, "failed to attach syscons\n");
+		goto fail;
+	}
+
+	/* 
+	 * We have to wait until interrupts are enabled. 
+	 * Mailbox relies on it to get data from VideoCore
+	 */
+        sc->init_hook.ich_func = bcm_fb_init;
+        sc->init_hook.ich_arg = sc;
+
+        if (config_intrhook_establish(&sc->init_hook) != 0) {
+		device_printf(dev, "failed to establish intrhook\n");
+                return (ENOMEM);
+	}
+
+	return (0);
+
+fail:
+	return (ENXIO);
+}
+
+
+static void
+bcm_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
+{
+	bus_addr_t *addr;
+
+	if (err)
+		return;
+
+	addr = (bus_addr_t*)arg;
+	*addr = PHYS_TO_VCBUS(segs[0].ds_addr);
+}
+
+static device_method_t bcm_fb_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		bcm_fb_probe),
+	DEVMETHOD(device_attach,	bcm_fb_attach),
+
+	{ 0, 0 }
+};
+
+static devclass_t bcm_fb_devclass;
+
+static driver_t bcm_fb_driver = {
+	"fb",
+	bcm_fb_methods,
+	sizeof(struct bcmsc_softc),
+};
+
+DRIVER_MODULE(bcm2835fb, simplebus, bcm_fb_driver, bcm_fb_devclass, 0, 0);
+
+/*
+ * Video driver routines and glue.
+ */
+static int			bcmfb_configure(int);
+static vi_probe_t		bcmfb_probe;
+static vi_init_t		bcmfb_init;
+static vi_get_info_t		bcmfb_get_info;
+static vi_query_mode_t		bcmfb_query_mode;
+static vi_set_mode_t		bcmfb_set_mode;
+static vi_save_font_t		bcmfb_save_font;
+static vi_load_font_t		bcmfb_load_font;
+static vi_show_font_t		bcmfb_show_font;
+static vi_save_palette_t	bcmfb_save_palette;
+static vi_load_palette_t	bcmfb_load_palette;
+static vi_set_border_t		bcmfb_set_border;
+static vi_save_state_t		bcmfb_save_state;
+static vi_load_state_t		bcmfb_load_state;
+static vi_set_win_org_t		bcmfb_set_win_org;
+static vi_read_hw_cursor_t	bcmfb_read_hw_cursor;
+static vi_set_hw_cursor_t	bcmfb_set_hw_cursor;
+static vi_set_hw_cursor_shape_t	bcmfb_set_hw_cursor_shape;
+static vi_blank_display_t	bcmfb_blank_display;
+static vi_mmap_t		bcmfb_mmap;
+static vi_ioctl_t		bcmfb_ioctl;
+static vi_clear_t		bcmfb_clear;
+static vi_fill_rect_t		bcmfb_fill_rect;
+static vi_bitblt_t		bcmfb_bitblt;
+static vi_diag_t		bcmfb_diag;
+static vi_save_cursor_palette_t	bcmfb_save_cursor_palette;
+static vi_load_cursor_palette_t	bcmfb_load_cursor_palette;
+static vi_copy_t		bcmfb_copy;
+static vi_putp_t		bcmfb_putp;
+static vi_putc_t		bcmfb_putc;
+static vi_puts_t		bcmfb_puts;
+static vi_putm_t		bcmfb_putm;
+
+static video_switch_t bcmfbvidsw = {
+	.probe			= bcmfb_probe,
+	.init			= bcmfb_init,
+	.get_info		= bcmfb_get_info,
+	.query_mode		= bcmfb_query_mode,
+	.set_mode		= bcmfb_set_mode,
+	.save_font		= bcmfb_save_font,
+	.load_font		= bcmfb_load_font,
+	.show_font		= bcmfb_show_font,
+	.save_palette		= bcmfb_save_palette,
+	.load_palette		= bcmfb_load_palette,
+	.set_border		= bcmfb_set_border,
+	.save_state		= bcmfb_save_state,
+	.load_state		= bcmfb_load_state,
+	.set_win_org		= bcmfb_set_win_org,
+	.read_hw_cursor		= bcmfb_read_hw_cursor,
+	.set_hw_cursor		= bcmfb_set_hw_cursor,
+	.set_hw_cursor_shape	= bcmfb_set_hw_cursor_shape,
+	.blank_display		= bcmfb_blank_display,
+	.mmap			= bcmfb_mmap,
+	.ioctl			= bcmfb_ioctl,
+	.clear			= bcmfb_clear,
+	.fill_rect		= bcmfb_fill_rect,
+	.bitblt			= bcmfb_bitblt,
+	.diag			= bcmfb_diag,
+	.save_cursor_palette	= bcmfb_save_cursor_palette,
+	.load_cursor_palette	= bcmfb_load_cursor_palette,
+	.copy			= bcmfb_copy,
+	.putp			= bcmfb_putp,
+	.putc			= bcmfb_putc,
+	.puts			= bcmfb_puts,
+	.putm			= bcmfb_putm,
+};
+
+VIDEO_DRIVER(bcmfb, bcmfbvidsw, bcmfb_configure);
+
+extern sc_rndr_sw_t txtrndrsw;
+RENDERER(bcmfb, 0, txtrndrsw, gfb_set);
+RENDERER_MODULE(bcmfb, gfb_set);
+
+static uint16_t bcmfb_static_window[ROW*COL];
+extern u_char dflt_font_16[];
+
+static int
+bcmfb_configure(int flags)
+{
+	struct video_adapter_softc *sc;
+
+	sc = &va_softc;
+
+	if (sc->initialized)
+		return 0;
+
+	sc->height = FB_HEIGHT;
+	sc->width = FB_WIDTH;
+
+	bcmfb_init(0, &sc->va, 0);
+
+	sc->initialized = 1;
+
+	return (0);
+}
+
+static int
+bcmfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_init(int unit, video_adapter_t *adp, int flags)
+{
+	struct video_adapter_softc *sc;
+	video_info_t *vi;
+
+	sc = (struct video_adapter_softc *)adp;
+	vi = &adp->va_info;
+
+	vid_init_struct(adp, "bcmfb", -1, unit);
+
+	sc->font = dflt_font_16;
+	vi->vi_cheight = BCMFB_FONT_HEIGHT;
+	vi->vi_cwidth = 8;
+	vi->vi_width = sc->width/8;
+	vi->vi_height = sc->height/vi->vi_cheight;
+
+	/*
+	 * Clamp width/height to syscons maximums
+	 */
+	if (vi->vi_width > COL)
+		vi->vi_width = COL;
+	if (vi->vi_height > ROW)
+		vi->vi_height = ROW;
+
+	sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
+	sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
+
+	adp->va_window = (vm_offset_t) bcmfb_static_window;
+	adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
+
+	vid_register(&sc->va);
+
+	return (0);
+}
+
+static int
+bcmfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
+{
+	bcopy(&adp->va_info, info, sizeof(*info));
+	return (0);
+}
+
+static int
+bcmfb_query_mode(video_adapter_t *adp, video_info_t *info)
+{
+	return (0);
+}
+
+static int
+bcmfb_set_mode(video_adapter_t *adp, int mode)
+{
+	return (0);
+}
+
+static int
+bcmfb_save_font(video_adapter_t *adp, int page, int size, int width,
+    u_char *data, int c, int count)
+{
+	return (0);
+}
+
+static int
+bcmfb_load_font(video_adapter_t *adp, int page, int size, int width,
+    u_char *data, int c, int count)
+{
+	struct video_adapter_softc *sc = (struct video_adapter_softc *)adp;
+
+	sc->font = data;
+
+	return (0);
+}
+
+static int
+bcmfb_show_font(video_adapter_t *adp, int page)
+{
+	return (0);
+}
+
+static int
+bcmfb_save_palette(video_adapter_t *adp, u_char *palette)
+{
+	return (0);
+}
+
+static int
+bcmfb_load_palette(video_adapter_t *adp, u_char *palette)
+{
+	return (0);
+}
+
+static int
+bcmfb_set_border(video_adapter_t *adp, int border)
+{
+	return (bcmfb_blank_display(adp, border));
+}
+
+static int
+bcmfb_save_state(video_adapter_t *adp, void *p, size_t size)
+{
+	return (0);
+}
+
+static int
+bcmfb_load_state(video_adapter_t *adp, void *p)
+{
+	return (0);
+}
+
+static int
+bcmfb_set_win_org(video_adapter_t *adp, off_t offset)
+{
+	return (0);
+}
+
+static int
+bcmfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
+{
+	*col = *row = 0;
+
+	return (0);
+}
+
+static int
+bcmfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
+{
+	return (0);
+}
+
+static int
+bcmfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
+    int celsize, int blink)
+{
+	return (0);
+}
+
+static int
+bcmfb_blank_display(video_adapter_t *adp, int mode)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
+    int prot, vm_memattr_t *memattr)
+{
+	struct video_adapter_softc *sc;
+
+	sc = (struct video_adapter_softc *)adp;
+
+	/*
+	 * This might be a legacy VGA mem request: if so, just point it at the
+	 * framebuffer, since it shouldn't be touched
+	 */
+	if (offset < sc->stride*sc->height) {
+		*paddr = sc->fb_addr + offset;
+		return (0);
+	}
+
+	return (EINVAL);
+}
+
+static int
+bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_clear(video_adapter_t *adp)
+{
+
+	return (bcmfb_blank_display(adp, 0));
+}
+
+static int
+bcmfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_bitblt(video_adapter_t *adp, ...)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_diag(video_adapter_t *adp, int level)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
+    int size, int bpp, int bit_ltor, int byte_ltor)
+{
+
+	return (0);
+}
+
+static int
+bcmfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
+{
+	struct video_adapter_softc *sc;
+	int row;
+	int col;
+	int i, j, k;
+	uint8_t *addr;
+	u_char *p;
+	uint8_t fg, bg, color;
+
+	sc = (struct video_adapter_softc *)adp;
+
+	if (sc->fb_addr == 0)
+		return (0);
+
+	row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
+	col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
+	p = sc->font + c*BCMFB_FONT_HEIGHT;
+	addr = (uint8_t *)sc->fb_addr
+	    + (row + sc->ymargin)*(sc->stride)
+	    + 3 * (col + sc->xmargin);
+
+	/*
+	 * FIXME: hardcoded
+	 */
+	bg = 0x00;
+	fg = 0x80;
+
+	for (i = 0; i < BCMFB_FONT_HEIGHT; i++) {
+		for (j = 0, k = 7; j < 8; j++, k--) {
+			if ((p[i] & (1 << k)) == 0)
+				color = bg;
+			else
+				color = fg;
+
+			addr[3*j] = color;
+			addr[3*j+1] = color;
+			addr[3*j+2] = color;
+		}
+
+		addr += (sc->stride);
+	}
+
+        return (0);
+}
+
+static int
+bcmfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
+{
+	int i;
+
+	for (i = 0; i < len; i++) 
+		bcmfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
+
+	return (0);
+}
+
+static int
+bcmfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
+    uint32_t pixel_mask, int size, int width)
+{
+
+	return (0);
+}
+
+/*
+ * Define a stub keyboard driver in case one hasn't been
+ * compiled into the kernel
+ */
+#include <sys/kbio.h>
+#include <dev/kbd/kbdreg.h>
+
+static int dummy_kbd_configure(int flags);
+
+keyboard_switch_t bcmdummysw;
+
+static int
+dummy_kbd_configure(int flags)
+{
+
+	return (0);
+}
+KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_intr.c b/sys/arm/broadcom/bcm2835/bcm2835_intr.c
new file mode 100644
index 0000000..09092a0
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_intr.c
@@ -0,0 +1,203 @@
+/*-
+ * Copyright (c) 2012 Damjan Marion <dmarion@Freebsd.org>
+ * All rights reserved.
+ *
+ * Based on OMAP3 INTC code by Ben Gray
+ *
+ * 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/bus.h>
+#include <sys/kernel.h>
+#include <sys/ktr.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+#include <machine/bus.h>
+#include <machine/intr.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#define	INTC_PENDING_BASIC	0x00
+#define	INTC_PENDING_BANK1	0x04
+#define	INTC_PENDING_BANK2	0x08
+#define	INTC_FIQ_CONTROL	0x0C
+#define	INTC_ENABLE_BANK1	0x10
+#define	INTC_ENABLE_BANK2	0x14
+#define	INTC_ENABLE_BASIC	0x18
+#define	INTC_DISABLE_BANK1	0x1C
+#define	INTC_DISABLE_BANK2	0x20
+#define	INTC_DISABLE_BASIC	0x24
+
+#define	BANK1_START	8
+#define	BANK1_END	(BANK1_START + 32 - 1)
+#define	BANK2_START	(BANK1_START + 32)
+#define	BANK2_END	(BANK2_START + 32 - 1)
+
+#define	IS_IRQ_BASIC(n)	(((n) >= 0) && ((n) < BANK1_START))
+#define	IS_IRQ_BANK1(n)	(((n) >= BANK1_START) && ((n) <= BANK1_END))
+#define	IS_IRQ_BANK2(n)	(((n) >= BANK2_START) && ((n) <= BANK2_END))
+#define	IRQ_BANK1(n)	((n) - BANK1_START)
+#define	IRQ_BANK2(n)	((n) - BANK2_START)
+
+#ifdef  DEBUG
+#define dprintf(fmt, args...) printf(fmt, ##args)
+#else
+#define dprintf(fmt, args...)
+#endif
+
+struct bcm_intc_softc {
+	device_t		sc_dev;
+	struct resource *	intc_res;
+	bus_space_tag_t		intc_bst;
+	bus_space_handle_t	intc_bsh;
+};
+
+static struct bcm_intc_softc *bcm_intc_sc = NULL;
+
+#define	intc_read_4(reg)		\
+    bus_space_read_4(bcm_intc_sc->intc_bst, bcm_intc_sc->intc_bsh, reg)
+#define	intc_write_4(reg, val)		\
+    bus_space_write_4(bcm_intc_sc->intc_bst, bcm_intc_sc->intc_bsh, reg, val)
+
+static int
+bcm_intc_probe(device_t dev)
+{
+	if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-armctrl-ic"))
+		return (ENXIO);
+	device_set_desc(dev, "BCM2835 Interrupt Controller");
+	return (BUS_PROBE_DEFAULT);
+}
+
+static int
+bcm_intc_attach(device_t dev)
+{
+	struct		bcm_intc_softc *sc = device_get_softc(dev);
+	int		rid = 0;
+
+	sc->sc_dev = dev;
+
+	if (bcm_intc_sc)
+		return (ENXIO);
+
+	sc->intc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
+	if (sc->intc_res == NULL) {
+		device_printf(dev, "could not allocate memory resource\n");
+		return (ENXIO);
+	}
+
+	sc->intc_bst = rman_get_bustag(sc->intc_res);
+	sc->intc_bsh = rman_get_bushandle(sc->intc_res);
+
+	bcm_intc_sc = sc;
+
+	return (0);
+}
+
+static device_method_t bcm_intc_methods[] = {
+	DEVMETHOD(device_probe,		bcm_intc_probe),
+	DEVMETHOD(device_attach,	bcm_intc_attach),
+	{ 0, 0 }
+};
+
+static driver_t bcm_intc_driver = {
+	"intc",
+	bcm_intc_methods,
+	sizeof(struct bcm_intc_softc),
+};
+
+static devclass_t bcm_intc_devclass;
+
+DRIVER_MODULE(intc, simplebus, bcm_intc_driver, bcm_intc_devclass, 0, 0);
+
+int
+arm_get_next_irq(int last_irq)
+{
+	uint32_t pending;
+	int32_t irq = last_irq + 1;
+
+	/* Sanity check */
+	if (irq < 0)
+		irq = 0;
+	
+	/* TODO: should we mask last_irq? */
+	pending = intc_read_4(INTC_PENDING_BASIC);
+	while (irq < BANK1_START) {
+		if (pending & (1 << irq))
+			return irq;
+		irq++;
+	}
+
+	pending = intc_read_4(INTC_PENDING_BANK1);
+	while (irq < BANK2_START) {
+		if (pending & (1 << IRQ_BANK1(irq)))
+			return irq;
+		irq++;
+	}
+
+	pending = intc_read_4(INTC_PENDING_BANK2);
+	while (irq <= BANK2_END) {
+		if (pending & (1 << IRQ_BANK2(irq)))
+			return irq;
+		irq++;
+	}
+
+	return (-1);
+}
+
+void
+arm_mask_irq(uintptr_t nb)
+{
+	dprintf("%s: %d\n", __func__, nb);
+
+	if (IS_IRQ_BASIC(nb))
+		intc_write_4(INTC_DISABLE_BASIC, (1 << nb));
+	else if (IS_IRQ_BANK1(nb))
+		intc_write_4(INTC_DISABLE_BANK1, (1 << IRQ_BANK1(nb)));
+	else if (IS_IRQ_BANK2(nb))
+		intc_write_4(INTC_DISABLE_BANK2, (1 << IRQ_BANK2(nb)));
+	else
+		printf("arm_mask_irq: Invalid IRQ number: %d\n", nb);
+}
+
+void
+arm_unmask_irq(uintptr_t nb)
+{
+	dprintf("%s: %d\n", __func__, nb);
+
+	if (IS_IRQ_BASIC(nb))
+		intc_write_4(INTC_ENABLE_BASIC, (1 << nb));
+	else if (IS_IRQ_BANK1(nb))
+		intc_write_4(INTC_ENABLE_BANK1, (1 << IRQ_BANK1(nb)));
+	else if (IS_IRQ_BANK2(nb))
+		intc_write_4(INTC_ENABLE_BANK2, (1 << IRQ_BANK2(nb)));
+	else
+		printf("arm_mask_irq: Invalid IRQ number: %d\n", nb);
+}
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_machdep.c b/sys/arm/broadcom/bcm2835/bcm2835_machdep.c
new file mode 100644
index 0000000..f26480f
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_machdep.c
@@ -0,0 +1,603 @@
+/*-
+ * Copyright (c) 2012 Oleksandr Tymoshenko.
+ * Copyright (c) 1994-1998 Mark Brinicombe.
+ * Copyright (c) 1994 Brini.
+ * All rights reserved.
+ *
+ * This code is derived from software written for Brini by Mark Brinicombe
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Brini.
+ * 4. The name of the company nor the name of the author may be used to
+ *    endorse or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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.
+ *
+ * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
+ */
+
+#include "opt_ddb.h"
+#include "opt_platform.h"
+#include "opt_global.h"
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#define _ARM32_BUS_DMA_PRIVATE
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/sysproto.h>
+#include <sys/signalvar.h>
+#include <sys/imgact.h>
+#include <sys/kernel.h>
+#include <sys/ktr.h>
+#include <sys/linker.h>
+#include <sys/lock.h>
+#include <sys/malloc.h>
+#include <sys/mutex.h>
+#include <sys/pcpu.h>
+#include <sys/proc.h>
+#include <sys/ptrace.h>
+#include <sys/cons.h>
+#include <sys/bio.h>
+#include <sys/bus.h>
+#include <sys/buf.h>
+#include <sys/exec.h>
+#include <sys/kdb.h>
+#include <sys/msgbuf.h>
+#include <machine/reg.h>
+#include <machine/cpu.h>
+#include <machine/fdt.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <vm/vm_object.h>
+#include <vm/vm_page.h>
+#include <vm/vm_pager.h>
+#include <vm/vm_map.h>
+#include <machine/pte.h>
+#include <machine/pmap.h>
+#include <machine/vmparam.h>
+#include <machine/pcb.h>
+#include <machine/undefined.h>
+#include <machine/machdep.h>
+#include <machine/metadata.h>
+#include <machine/armreg.h>
+#include <machine/bus.h>
+#include <sys/reboot.h>
+
+#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
+
+#define  DEBUG
+#ifdef  DEBUG
+#define debugf(fmt, args...) printf(fmt, ##args)
+#else
+#define debugf(fmt, args...)
+#endif
+
+/* Start of address space used for bootstrap map */
+#define DEVMAP_BOOTSTRAP_MAP_START	0xE0000000
+
+/*
+ * This is the number of L2 page tables required for covering max
+ * (hypothetical) memsize of 4GB and all kernel mappings (vectors, msgbuf,
+ * stacks etc.), uprounded to be divisible by 4.
+ */
+#define KERNEL_PT_MAX	78
+
+/* Define various stack sizes in pages */
+#define IRQ_STACK_SIZE	1
+#define ABT_STACK_SIZE	1
+#define UND_STACK_SIZE	1
+
+extern unsigned char kernbase[];
+extern unsigned char _etext[];
+extern unsigned char _edata[];
+extern unsigned char __bss_start[];
+extern unsigned char _end[];
+
+#ifdef DDB
+extern vm_offset_t ksym_start, ksym_end;
+#endif
+
+extern u_int data_abort_handler_address;
+extern u_int prefetch_abort_handler_address;
+extern u_int undefined_handler_address;
+
+extern vm_offset_t pmap_bootstrap_lastaddr;
+extern int *end;
+
+struct pv_addr kernel_pt_table[KERNEL_PT_MAX];
+
+/* Physical and virtual addresses for some global pages */
+vm_paddr_t phys_avail[10];
+vm_paddr_t dump_avail[4];
+vm_offset_t physical_pages;
+vm_offset_t pmap_bootstrap_lastaddr;
+vm_paddr_t pmap_pa;
+
+const struct pmap_devmap *pmap_devmap_bootstrap_table;
+struct pv_addr systempage;
+struct pv_addr msgbufpv;
+struct pv_addr irqstack;
+struct pv_addr undstack;
+struct pv_addr abtstack;
+struct pv_addr kernelstack;
+
+void set_stackptrs(int cpu);
+
+static struct mem_region availmem_regions[FDT_MEM_REGIONS];
+static int availmem_regions_sz;
+
+static void print_kenv(void);
+static void print_kernel_section_addr(void);
+
+static void physmap_init(void);
+static int platform_devmap_init(void);
+
+static char *
+kenv_next(char *cp)
+{
+
+	if (cp != NULL) {
+		while (*cp != 0)
+			cp++;
+		cp++;
+		if (*cp == 0)
+			cp = NULL;
+	}
+	return (cp);
+}
+
+static void
+print_kenv(void)
+{
+	int len;
+	char *cp;
+
+	debugf("loader passed (static) kenv:\n");
+	if (kern_envp == NULL) {
+		debugf(" no env, null ptr\n");
+		return;
+	}
+	debugf(" kern_envp = 0x%08x\n", (uint32_t)kern_envp);
+
+	len = 0;
+	for (cp = kern_envp; cp != NULL; cp = kenv_next(cp))
+		debugf(" %x %s\n", (uint32_t)cp, cp);
+}
+
+static void
+print_kernel_section_addr(void)
+{
+
+	debugf("kernel image addresses:\n");
+	debugf(" kernbase       = 0x%08x\n", (uint32_t)kernbase);
+	debugf(" _etext (sdata) = 0x%08x\n", (uint32_t)_etext);
+	debugf(" _edata         = 0x%08x\n", (uint32_t)_edata);
+	debugf(" __bss_start    = 0x%08x\n", (uint32_t)__bss_start);
+	debugf(" _end           = 0x%08x\n", (uint32_t)_end);
+}
+
+static void
+physmap_init(void)
+{
+	int i, j, cnt;
+	vm_offset_t phys_kernelend, kernload;
+	uint32_t s, e, sz;
+	struct mem_region *mp, *mp1;
+
+	phys_kernelend = KERNPHYSADDR + (virtual_avail - KERNVIRTADDR);
+	kernload = KERNPHYSADDR;
+
+	/*
+	 * Remove kernel physical address range from avail
+	 * regions list. Page align all regions.
+	 * Non-page aligned memory isn't very interesting to us.
+	 * Also, sort the entries for ascending addresses.
+	 */
+	sz = 0;
+	cnt = availmem_regions_sz;
+	debugf("processing avail regions:\n");
+	for (mp = availmem_regions; mp->mr_size; mp++) {
+		s = mp->mr_start;
+		e = mp->mr_start + mp->mr_size;
+		debugf(" %08x-%08x -> ", s, e);
+		/* Check whether this region holds all of the kernel. */
+		if (s < kernload && e > phys_kernelend) {
+			availmem_regions[cnt].mr_start = phys_kernelend;
+			availmem_regions[cnt++].mr_size = e - phys_kernelend;
+			e = kernload;
+		}
+		/* Look whether this regions starts within the kernel. */
+		if (s >= kernload && s < phys_kernelend) {
+			if (e <= phys_kernelend)
+				goto empty;
+			s = phys_kernelend;
+		}
+		/* Now look whether this region ends within the kernel. */
+		if (e > kernload && e <= phys_kernelend) {
+			if (s >= kernload) {
+				goto empty;
+			}
+			e = kernload;
+		}
+		/* Now page align the start and size of the region. */
+		s = round_page(s);
+		e = trunc_page(e);
+		if (e < s)
+			e = s;
+		sz = e - s;
+		debugf("%08x-%08x = %x\n", s, e, sz);
+
+		/* Check whether some memory is left here. */
+		if (sz == 0) {
+		empty:
+			printf("skipping\n");
+			bcopy(mp + 1, mp,
+			    (cnt - (mp - availmem_regions)) * sizeof(*mp));
+			cnt--;
+			mp--;
+			continue;
+		}
+
+		/* Do an insertion sort. */
+		for (mp1 = availmem_regions; mp1 < mp; mp1++)
+			if (s < mp1->mr_start)
+				break;
+		if (mp1 < mp) {
+			bcopy(mp1, mp1 + 1, (char *)mp - (char *)mp1);
+			mp1->mr_start = s;
+			mp1->mr_size = sz;
+		} else {
+			mp->mr_start = s;
+			mp->mr_size = sz;
+		}
+	}
+	availmem_regions_sz = cnt;
+
+	/* Fill in phys_avail table, based on availmem_regions */
+	debugf("fill in phys_avail:\n");
+	for (i = 0, j = 0; i < availmem_regions_sz; i++, j += 2) {
+
+		debugf(" region: 0x%08x - 0x%08x (0x%08x)\n",
+		    availmem_regions[i].mr_start,
+		    availmem_regions[i].mr_start + availmem_regions[i].mr_size,
+		    availmem_regions[i].mr_size);
+
+		phys_avail[j] = availmem_regions[i].mr_start;
+		phys_avail[j + 1] = availmem_regions[i].mr_start +
+		    availmem_regions[i].mr_size;
+	}
+	phys_avail[j] = 0;
+	phys_avail[j + 1] = 0;
+}
+
+void *
+initarm(struct arm_boot_params *abp)
+{
+	struct pv_addr kernel_l1pt;
+	struct pv_addr dpcpu;
+	vm_offset_t dtbp, freemempos, l2_start, lastaddr;
+	uint32_t memsize, l2size;
+	void *kmdp;
+	u_int l1pagetable;
+	int i = 0, j = 0;
+
+	lastaddr = fake_preload_metadata(abp);
+	memsize = 0;
+	set_cpufuncs();
+
+	kmdp = preload_search_by_type("elf kernel");
+	if (kmdp != NULL)
+		dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
+	else
+		dtbp = (vm_offset_t)NULL;
+
+#if defined(FDT_DTB_STATIC)
+	/*
+	 * In case the device tree blob was not retrieved (from metadata) try
+	 * to use the statically embedded one.
+	 */
+	if (dtbp == (vm_offset_t)NULL)
+		dtbp = (vm_offset_t)&fdt_static_dtb;
+#endif
+
+	if (OF_install(OFW_FDT, 0) == FALSE)
+		while (1);
+
+	if (OF_init((void *)dtbp) != 0)
+		while (1);
+
+	/* Grab physical memory regions information from device tree. */
+	if (fdt_get_mem_regions(availmem_regions, &availmem_regions_sz,
+	    &memsize) != 0)
+		while(1);
+
+	/* Platform-specific initialisation */
+	pmap_bootstrap_lastaddr = DEVMAP_BOOTSTRAP_MAP_START - ARM_NOCACHE_KVA_SIZE;
+
+	pcpu0_init();
+
+	/* Calculate number of L2 tables needed for mapping vm_page_array */
+	l2size = (memsize / PAGE_SIZE) * sizeof(struct vm_page);
+	l2size = (l2size >> L1_S_SHIFT) + 1;
+
+	/*
+	 * Add one table for end of kernel map, one for stacks, msgbuf and
+	 * L1 and L2 tables map and one for vectors map.
+	 */
+	l2size += 3;
+
+	/* Make it divisible by 4 */
+	l2size = (l2size + 3) & ~3;
+
+#define KERNEL_TEXT_BASE (KERNBASE)
+	freemempos = (lastaddr + PAGE_MASK) & ~PAGE_MASK;
+
+	/* Define a macro to simplify memory allocation */
+#define valloc_pages(var, np)                   \
+	alloc_pages((var).pv_va, (np));         \
+	(var).pv_pa = (var).pv_va + (KERNPHYSADDR - KERNVIRTADDR);
+
+#define alloc_pages(var, np)			\
+	(var) = freemempos;		\
+	freemempos += (np * PAGE_SIZE);		\
+	memset((char *)(var), 0, ((np) * PAGE_SIZE));
+
+	while (((freemempos - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) != 0)
+		freemempos += PAGE_SIZE;
+	valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
+
+	for (i = 0; i < l2size; ++i) {
+		if (!(i % (PAGE_SIZE / L2_TABLE_SIZE_REAL))) {
+			valloc_pages(kernel_pt_table[i],
+			    L2_TABLE_SIZE / PAGE_SIZE);
+			j = i;
+		} else {
+			kernel_pt_table[i].pv_va = kernel_pt_table[j].pv_va +
+			    L2_TABLE_SIZE_REAL * (i - j);
+			kernel_pt_table[i].pv_pa =
+			    kernel_pt_table[i].pv_va - KERNVIRTADDR +
+			    KERNPHYSADDR;
+
+		}
+	}
+	/*
+	 * Allocate a page for the system page mapped to 0x00000000
+	 * or 0xffff0000. This page will just contain the system vectors
+	 * and can be shared by all processes.
+	 */
+	valloc_pages(systempage, 1);
+
+	/* Allocate dynamic per-cpu area. */
+	valloc_pages(dpcpu, DPCPU_SIZE / PAGE_SIZE);
+	dpcpu_init((void *)dpcpu.pv_va, 0);
+
+	/* Allocate stacks for all modes */
+	valloc_pages(irqstack, (IRQ_STACK_SIZE * MAXCPU));
+	valloc_pages(abtstack, (ABT_STACK_SIZE * MAXCPU));
+	valloc_pages(undstack, (UND_STACK_SIZE * MAXCPU));
+	valloc_pages(kernelstack, (KSTACK_PAGES * MAXCPU));
+
+	init_param1();
+
+	valloc_pages(msgbufpv, round_page(msgbufsize) / PAGE_SIZE);
+
+	/*
+	 * Now we start construction of the L1 page table
+	 * We start by mapping the L2 page tables into the L1.
+	 * This means that we can replace L1 mappings later on if necessary
+	 */
+	l1pagetable = kernel_l1pt.pv_va;
+
+	/*
+	 * Try to map as much as possible of kernel text and data using
+	 * 1MB section mapping and for the rest of initial kernel address
+	 * space use L2 coarse tables.
+	 *
+	 * Link L2 tables for mapping remainder of kernel (modulo 1MB)
+	 * and kernel structures
+	 */
+	l2_start = lastaddr & ~(L1_S_OFFSET);
+	for (i = 0 ; i < l2size - 1; i++)
+		pmap_link_l2pt(l1pagetable, l2_start + i * L1_S_SIZE,
+		    &kernel_pt_table[i]);
+
+	pmap_curmaxkvaddr = l2_start + (l2size - 1) * L1_S_SIZE;
+
+	/* Map kernel code and data */
+	pmap_map_chunk(l1pagetable, KERNVIRTADDR, KERNPHYSADDR,
+	   (((uint32_t)(lastaddr) - KERNVIRTADDR) + PAGE_MASK) & ~PAGE_MASK,
+	    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
+
+	/* Map L1 directory and allocated L2 page tables */
+	pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
+	    L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
+
+	pmap_map_chunk(l1pagetable, kernel_pt_table[0].pv_va,
+	    kernel_pt_table[0].pv_pa,
+	    L2_TABLE_SIZE_REAL * l2size,
+	    VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
+
+	/* Map allocated DPCPU, stacks and msgbuf */
+	pmap_map_chunk(l1pagetable, dpcpu.pv_va, dpcpu.pv_pa,
+	    freemempos - dpcpu.pv_va,
+	    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
+
+
+	/* Map allocated DPCPU, stacks and msgbuf */
+	pmap_map_chunk(l1pagetable, 0xf2200000, 0x20200000,
+	    0x00100000, 
+	    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
+
+	/* Link and map the vector page */
+	pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH,
+	    &kernel_pt_table[l2size - 1]);
+	pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
+	    VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE, PTE_CACHE);
+
+	/* Map pmap_devmap[] entries */
+	if (platform_devmap_init() != 0)
+		while (1);
+	pmap_devmap_bootstrap(l1pagetable, pmap_devmap_bootstrap_table);
+
+	cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL * 2)) |
+	    DOMAIN_CLIENT);
+
+	pmap_pa = kernel_l1pt.pv_pa;
+
+	setttb(kernel_l1pt.pv_pa);
+	cpu_tlb_flushID();
+	cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL * 2));
+
+	/*
+	 * Only after the SOC registers block is mapped we can perform device
+	 * tree fixups, as they may attempt to read parameters from hardware.
+	 */
+	OF_interpret("perform-fixup", 0);
+
+	cninit();
+
+	physmem = memsize / PAGE_SIZE;
+
+	debugf("initarm: console initialized\n");
+	debugf(" arg1 mmdp = 0x%08x\n", (uint32_t)kmdp);
+	debugf(" boothowto = 0x%08x\n", boothowto);
+	debugf(" dtbp = 0x%08x\n", (uint32_t)dtbp);
+	print_kernel_section_addr();
+	print_kenv();
+
+	/*
+	 * Pages were allocated during the secondary bootstrap for the
+	 * stacks for different CPU modes.
+	 * We must now set the r13 registers in the different CPU modes to
+	 * point to these stacks.
+	 * Since the ARM stacks use STMFD etc. we must set r13 to the top end
+	 * of the stack memory.
+	 */
+	cpu_control(CPU_CONTROL_MMU_ENABLE, CPU_CONTROL_MMU_ENABLE);
+
+	set_stackptrs(0);
+
+	/*
+	 * We must now clean the cache again....
+	 * Cleaning may be done by reading new data to displace any
+	 * dirty data in the cache. This will have happened in setttb()
+	 * but since we are boot strapping the addresses used for the read
+	 * may have just been remapped and thus the cache could be out
+	 * of sync. A re-clean after the switch will cure this.
+	 * After booting there are no gross relocations of the kernel thus
+	 * this problem will not occur after initarm().
+	 */
+	cpu_idcache_wbinv_all();
+
+	/* Set stack for exception handlers */
+	data_abort_handler_address = (u_int)data_abort_handler;
+	prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
+	undefined_handler_address = (u_int)undefinedinstruction_bounce;
+	undefined_init();
+
+	init_proc0(kernelstack.pv_va);
+
+	arm_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
+
+	arm_dump_avail_init(memsize, sizeof(dump_avail) / sizeof(dump_avail[0]));
+	pmap_bootstrap(freemempos, pmap_bootstrap_lastaddr, &kernel_l1pt);
+	msgbufp = (void *)msgbufpv.pv_va;
+	msgbufinit(msgbufp, msgbufsize);
+	mutex_init();
+
+	/*
+	 * Prepare map of physical memory regions available to vm subsystem.
+	 */
+	physmap_init();
+
+	/* Do basic tuning, hz etc */
+	init_param2(physmem);
+	kdb_init();
+
+	return ((void *)(kernelstack.pv_va + USPACE_SVC_STACK_TOP -
+	    sizeof(struct pcb)));
+}
+
+void
+set_stackptrs(int cpu)
+{
+
+	set_stackptr(PSR_IRQ32_MODE,
+	    irqstack.pv_va + ((IRQ_STACK_SIZE * PAGE_SIZE) * (cpu + 1)));
+	set_stackptr(PSR_ABT32_MODE,
+	    abtstack.pv_va + ((ABT_STACK_SIZE * PAGE_SIZE) * (cpu + 1)));
+	set_stackptr(PSR_UND32_MODE,
+	    undstack.pv_va + ((UND_STACK_SIZE * PAGE_SIZE) * (cpu + 1)));
+}
+
+#define FDT_DEVMAP_MAX	(2)		// FIXME
+static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
+	{ 0, 0, 0, 0, 0, }
+};
+
+
+/*
+ * Construct pmap_devmap[] with DT-derived config data.
+ */
+static int
+platform_devmap_init(void)
+{
+	int i = 0;
+
+	fdt_devmap[i].pd_va = 0xf2000000;
+	fdt_devmap[i].pd_pa = 0x20000000;
+	fdt_devmap[i].pd_size = 0x01000000;       /* 1 MB */
+	fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
+	fdt_devmap[i].pd_cache = PTE_DEVICE;
+	i++;
+
+	pmap_devmap_bootstrap_table = &fdt_devmap[0];
+	return (0);
+}
+
+struct arm32_dma_range *
+bus_dma_get_range(void)
+{
+
+	return (NULL);
+}
+
+int
+bus_dma_get_range_nb(void)
+{
+
+	return (0);
+}
+
+void
+cpu_reset()
+{
+	bcmwd_watchdog_reset();
+	while (1);
+}
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_mbox.c b/sys/arm/broadcom/bcm2835/bcm2835_mbox.c
new file mode 100644
index 0000000..a262ad7
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_mbox.c
@@ -0,0 +1,249 @@
+/*-
+ * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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 <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/malloc.h>
+#include <sys/rman.h>
+#include <sys/timeet.h>
+#include <sys/timetc.h>
+#include <sys/watchdog.h>
+#include <machine/bus.h>
+#include <machine/cpu.h>
+#include <machine/frame.h>
+#include <machine/intr.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+#include <arm/broadcom/bcm2835/bcm2835_mbox.h>
+
+#define	REG_READ	0x00
+#define	REG_POL		0x10
+#define	REG_SENDER	0x14
+#define	REG_STATUS	0x18
+#define		STATUS_FULL	0x80000000
+#define		STATUS_EMPTY	0x40000000
+#define	REG_CONFIG	0x1C
+#define		CONFIG_DATA_IRQ	0x00000001
+#define	REG_WRITE	0x20 /* This is Mailbox 1 address */
+
+#define	MBOX_MSG(chan, data)	(((data) & ~0xf) | ((chan) & 0xf))
+#define	MBOX_CHAN(msg)		((msg) & 0xf)
+#define	MBOX_DATA(msg)		((msg) & ~0xf)
+
+#define	MBOX_LOCK	do {		\
+	mtx_lock(&bcm_mbox_sc->lock);	\
+} while(0)
+
+#define	MBOX_UNLOCK	do {		\
+	mtx_unlock(&bcm_mbox_sc->lock);	\
+} while(0)
+
+#ifdef  DEBUG
+#define dprintf(fmt, args...) printf(fmt, ##args)
+#else
+#define dprintf(fmt, args...)
+#endif
+
+struct bcm_mbox_softc {
+	struct mtx		lock;
+	struct resource *	mem_res;
+	struct resource *	irq_res;
+	void*			intr_hl;
+	bus_space_tag_t		bst;
+	bus_space_handle_t	bsh;
+	int			valid[BCM2835_MBOX_CHANS];
+	int			msg[BCM2835_MBOX_CHANS];
+};
+
+static struct bcm_mbox_softc *bcm_mbox_sc = NULL;
+
+#define	mbox_read_4(reg)		\
+    bus_space_read_4(bcm_mbox_sc->bst, bcm_mbox_sc->bsh, reg)
+#define	mbox_write_4(reg, val)		\
+    bus_space_write_4(bcm_mbox_sc->bst, bcm_mbox_sc->bsh, reg, val)
+
+static void
+bcm_mbox_intr(void *arg)
+{
+	struct bcm_mbox_softc *sc = arg;
+	int chan;
+	uint32_t data;
+	uint32_t msg;
+
+	MBOX_LOCK;
+	while (!(mbox_read_4(REG_STATUS) & STATUS_EMPTY)) {
+		msg = mbox_read_4(REG_READ);
+		dprintf("bcm_mbox_intr: raw data %08x\n", msg);
+		chan = MBOX_CHAN(msg);
+		data = MBOX_DATA(msg);
+		if (sc->valid[chan]) {
+			printf("bcm_mbox_intr: channel %d oveflow\n", chan);
+			continue;
+		}
+		dprintf("bcm_mbox_intr: chan %d, data %08x\n", chan, data);
+		sc->msg[chan] = data;
+		sc->valid[chan] = 1;
+		wakeup(&sc->msg[chan]);
+		
+	}
+	MBOX_UNLOCK;
+}
+
+static int
+bcm_mbox_probe(device_t dev)
+{
+
+	if (ofw_bus_is_compatible(dev, "broadcom,bcm2835-mbox")) {
+		device_set_desc(dev, "BCM2835 VideoCore Mailbox");
+		return(BUS_PROBE_DEFAULT);
+	}
+
+	return (ENXIO);
+}
+
+static int
+bcm_mbox_attach(device_t dev)
+{
+	struct bcm_mbox_softc *sc = device_get_softc(dev);
+	int i;
+	int rid = 0;
+
+	if (bcm_mbox_sc != NULL)
+		return (EINVAL);
+
+	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
+	if (sc->mem_res == NULL) {
+		device_printf(dev, "could not allocate memory resource\n");
+		return (ENXIO);
+	}
+
+	sc->bst = rman_get_bustag(sc->mem_res);
+	sc->bsh = rman_get_bushandle(sc->mem_res);
+
+	rid = 0;
+	sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
+	if (sc->irq_res == NULL) {
+		device_printf(dev, "could not allocate interrupt resource\n");
+		return (ENXIO);
+	}
+
+	/* Setup and enable the timer */
+	if (bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC,
+			NULL, bcm_mbox_intr, sc,
+			&sc->intr_hl) != 0) {
+		bus_release_resource(dev, SYS_RES_IRQ, rid,
+			sc->irq_res);
+		device_printf(dev, "Unable to setup the clock irq handler.\n");
+		return (ENXIO);
+	}
+
+	mtx_init(&sc->lock, "vcio mbox", MTX_DEF, 0);
+	for (i = 0; i < BCM2835_MBOX_CHANS; i++) {
+		sc->valid[0] = 0;
+		sc->msg[0] = 0;
+	}
+
+	bcm_mbox_sc = sc;
+	/* Read all pending messages */
+	bcm_mbox_intr(sc);
+
+	/* Should be called after bcm_mbox_sc initialization */
+	mbox_write_4(REG_CONFIG, CONFIG_DATA_IRQ);
+
+	return (0);
+}
+
+static device_method_t bcm_mbox_methods[] = {
+	DEVMETHOD(device_probe,		bcm_mbox_probe),
+	DEVMETHOD(device_attach,	bcm_mbox_attach),
+	{ 0, 0 }
+};
+
+static driver_t bcm_mbox_driver = {
+	"mbox",
+	bcm_mbox_methods,
+	sizeof(struct bcm_mbox_softc),
+};
+
+static devclass_t bcm_mbox_devclass;
+
+DRIVER_MODULE(mbox, simplebus, bcm_mbox_driver, bcm_mbox_devclass, 0, 0);
+
+/* 
+ * Mailbox API
+ */
+int
+bcm_mbox_write(int chan, uint32_t data)
+{
+	int limit = 20000;
+
+	dprintf("bcm_mbox_write: chan %d, data %08x\n", chan, data);
+	MBOX_LOCK;
+
+	while ((mbox_read_4(REG_STATUS) & STATUS_FULL) && limit--) {
+		DELAY(2);
+	}
+
+	if (limit == 0) {
+		printf("bcm_mbox_write: STATUS_FULL stuck");
+		MBOX_UNLOCK;
+		return (EAGAIN);
+	}
+	
+	mbox_write_4(REG_WRITE, MBOX_MSG(chan, data));
+
+	MBOX_UNLOCK;
+	return (0);
+}
+
+int
+bcm_mbox_read(int chan, uint32_t *data)
+{
+	struct bcm_mbox_softc *sc = bcm_mbox_sc;
+
+	dprintf("bcm_mbox_read: chan %d\n", chan);
+	MBOX_LOCK;
+	while (!sc->valid[chan])
+		msleep(&sc->msg[chan], &sc->lock, PZERO, "vcio mbox read", 0);
+	*data = bcm_mbox_sc->msg[chan];
+	bcm_mbox_sc->valid[chan] = 0;
+	MBOX_UNLOCK;
+	dprintf("bcm_mbox_read: chan %d, data %08x\n", chan, *data);
+
+	return (0);
+}
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_mbox.h b/sys/arm/broadcom/bcm2835/bcm2835_mbox.h
new file mode 100644
index 0000000..edb9d5b
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_mbox.h
@@ -0,0 +1,44 @@
+/*-
+ * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _BCM2835_MBOX_H_
+#define _BCM2835_MBOX_H_
+
+#define	BCM2835_MBOX_CHAN_POWER		0
+#define	BCM2835_MBOX_CHAN_FB		1
+#define	BCM2835_MBOX_CHAN_VUART		2
+#define	BCM2835_MBOX_CHAN_VCHIQ		3
+#define	BCM2835_MBOX_CHAN_LEDS		4
+#define	BCM2835_MBOX_CHAN_BUTTONS	5
+#define	BCM2835_MBOX_CHAN_TS		6
+#define	BCM2835_MBOX_CHANS		7
+
+int bcm_mbox_write(int chan, uint32_t data);
+int bcm_mbox_read(int chan, uint32_t *data);
+
+#endif /* _BCM2835_MBOX_H_ */
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_systimer.c b/sys/arm/broadcom/bcm2835/bcm2835_systimer.c
new file mode 100644
index 0000000..e027d52
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_systimer.c
@@ -0,0 +1,298 @@
+/*-
+ * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * Copyright (c) 2012 Damjan Marion <dmarion@freebsd.org>
+ * 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 <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/malloc.h>
+#include <sys/rman.h>
+#include <sys/timeet.h>
+#include <sys/timetc.h>
+#include <sys/watchdog.h>
+#include <machine/bus.h>
+#include <machine/cpu.h>
+#include <machine/frame.h>
+#include <machine/intr.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+
+#define	BCM2835_NUM_TIMERS	4
+
+#define	DEFAULT_TIMER		3
+#define	DEFAULT_FREQUENCY	1000000
+
+#define	SYSTIMER_CS	0x00
+#define	SYSTIMER_CLO	0x04
+#define	SYSTIMER_CHI	0x08
+#define	SYSTIMER_C0	0x0C
+#define	SYSTIMER_C1	0x10
+#define	SYSTIMER_C2	0x14
+#define	SYSTIMER_C3	0x18
+
+struct systimer {
+	int			index;
+	bool			enabled;
+	struct eventtimer	et;
+};
+
+struct bcm_systimer_softc {
+	struct resource*	mem_res;
+	struct resource*	irq_res[BCM2835_NUM_TIMERS];
+	void*			intr_hl[BCM2835_NUM_TIMERS];
+	uint32_t		sysclk_freq;
+	bus_space_tag_t		bst;
+	bus_space_handle_t	bsh;
+	struct systimer		st[BCM2835_NUM_TIMERS];
+};
+
+static struct resource_spec bcm_systimer_irq_spec[] = {
+	{ SYS_RES_IRQ,      0,  RF_ACTIVE },
+	{ SYS_RES_IRQ,      1,  RF_ACTIVE },
+	{ SYS_RES_IRQ,      2,  RF_ACTIVE },
+	{ SYS_RES_IRQ,      3,  RF_ACTIVE },
+	{ -1,               0,  0 }
+};
+
+static struct bcm_systimer_softc *bcm_systimer_sc = NULL;
+
+/* Read/Write macros for Timer used as timecounter */
+#define bcm_systimer_tc_read_4(reg)		\
+	bus_space_read_4(bcm_systimer_sc->bst, \
+		bcm_systimer_sc->bsh, reg)
+
+#define bcm_systimer_tc_write_4(reg, val)	\
+	bus_space_write_4(bcm_systimer_sc->bst, \
+		bcm_systimer_sc->bsh, reg, val)
+
+static unsigned bcm_systimer_tc_get_timecount(struct timecounter *);
+
+static struct timecounter bcm_systimer_tc = {
+	.tc_name           = "BCM2835 Timecouter",
+	.tc_get_timecount  = bcm_systimer_tc_get_timecount,
+	.tc_poll_pps       = NULL,
+	.tc_counter_mask   = ~0u,
+	.tc_frequency      = 0,
+	.tc_quality        = 1000,
+};
+
+static unsigned
+bcm_systimer_tc_get_timecount(struct timecounter *tc)
+{
+	return bcm_systimer_tc_read_4(SYSTIMER_CLO);
+}
+
+static int
+bcm_systimer_start(struct eventtimer *et, struct bintime *first,
+              struct bintime *period)
+{
+	struct systimer *st = et->et_priv;
+	uint32_t clo;
+	uint32_t count;
+
+	if (first != NULL) {
+		st->enabled = 1;
+
+		count = (st->et.et_frequency * (first->frac >> 32)) >> 32;
+		if (first->sec != 0)
+			count += st->et.et_frequency * first->sec;
+
+		clo = bcm_systimer_tc_read_4(SYSTIMER_CLO);
+		clo += count;
+		bcm_systimer_tc_write_4(SYSTIMER_C0 + st->index*4, clo);
+
+		return (0);
+	} 
+
+	return (EINVAL);
+}
+
+static int
+bcm_systimer_stop(struct eventtimer *et)
+{
+	struct systimer *st = et->et_priv;
+	st->enabled = 0;
+
+	return (0);
+}
+
+static int
+bcm_systimer_intr(void *arg)
+{
+	struct systimer *st = (struct systimer *)arg;
+
+	bcm_systimer_tc_write_4(SYSTIMER_CS, (1 << st->index));
+	if (st->enabled) {
+		if (st->et.et_active) {
+			st->et.et_event_cb(&st->et, st->et.et_arg);
+		}
+	}
+
+	return (FILTER_HANDLED);
+}
+
+static int
+bcm_systimer_probe(device_t dev)
+{
+
+	if (ofw_bus_is_compatible(dev, "broadcom,bcm2835-system-timer")) {
+		device_set_desc(dev, "BCM2835 System Timer");
+		return (BUS_PROBE_DEFAULT);
+	}
+
+	return (ENXIO);
+}
+
+static int
+bcm_systimer_attach(device_t dev)
+{
+	struct bcm_systimer_softc *sc = device_get_softc(dev);
+	int err;
+	int rid = 0;
+
+	if (bcm_systimer_sc != NULL)
+		return (EINVAL);
+
+	sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
+	if (sc->mem_res == NULL) {
+		device_printf(dev, "could not allocate memory resource\n");
+		return (ENXIO);
+	}
+
+	sc->bst = rman_get_bustag(sc->mem_res);
+	sc->bsh = rman_get_bushandle(sc->mem_res);
+
+	/* Request the IRQ resources */
+	err = bus_alloc_resources(dev, bcm_systimer_irq_spec,
+		sc->irq_res);
+	if (err) {
+		device_printf(dev, "Error: could not allocate irq resources\n");
+		return (ENXIO);
+	}
+
+	/* TODO: get frequency from FDT */
+	sc->sysclk_freq = DEFAULT_FREQUENCY;
+
+	/* Setup and enable the timer */
+	if (bus_setup_intr(dev, sc->irq_res[DEFAULT_TIMER], INTR_TYPE_CLK,
+			bcm_systimer_intr, NULL, &sc->st[DEFAULT_TIMER],
+			&sc->intr_hl[DEFAULT_TIMER]) != 0) {
+		bus_release_resources(dev, bcm_systimer_irq_spec,
+			sc->irq_res);
+		device_printf(dev, "Unable to setup the clock irq handler.\n");
+		return (ENXIO);
+	}
+
+	sc->st[DEFAULT_TIMER].index = DEFAULT_TIMER;
+	sc->st[DEFAULT_TIMER].enabled = 0;
+	sc->st[DEFAULT_TIMER].et.et_name = malloc(64, M_DEVBUF, M_NOWAIT | M_ZERO);
+	sprintf(sc->st[DEFAULT_TIMER].et.et_name, "BCM2835 Event Timer %d", DEFAULT_TIMER);
+	sc->st[DEFAULT_TIMER].et.et_flags = ET_FLAGS_ONESHOT;
+	sc->st[DEFAULT_TIMER].et.et_quality = 1000;
+	sc->st[DEFAULT_TIMER].et.et_frequency = sc->sysclk_freq;
+	sc->st[DEFAULT_TIMER].et.et_min_period.sec = 0;
+	sc->st[DEFAULT_TIMER].et.et_min_period.frac =
+	    ((0x00000002LLU << 32) / sc->st[DEFAULT_TIMER].et.et_frequency) << 32;
+	sc->st[DEFAULT_TIMER].et.et_max_period.sec = 0xfffffff0U / sc->st[DEFAULT_TIMER].et.et_frequency;
+	sc->st[DEFAULT_TIMER].et.et_max_period.frac =
+	    ((0xfffffffeLLU << 32) / sc->st[DEFAULT_TIMER].et.et_frequency) << 32;
+	sc->st[DEFAULT_TIMER].et.et_start = bcm_systimer_start;
+	sc->st[DEFAULT_TIMER].et.et_stop = bcm_systimer_stop;
+	sc->st[DEFAULT_TIMER].et.et_priv = &sc->st[DEFAULT_TIMER];
+	et_register(&sc->st[DEFAULT_TIMER].et);
+
+	bcm_systimer_sc = sc;
+
+	bcm_systimer_tc.tc_frequency = DEFAULT_FREQUENCY;
+	tc_init(&bcm_systimer_tc);
+
+	return (0);
+}
+
+static device_method_t bcm_systimer_methods[] = {
+	DEVMETHOD(device_probe,		bcm_systimer_probe),
+	DEVMETHOD(device_attach,	bcm_systimer_attach),
+	{ 0, 0 }
+};
+
+static driver_t bcm_systimer_driver = {
+	"systimer",
+	bcm_systimer_methods,
+	sizeof(struct bcm_systimer_softc),
+};
+
+static devclass_t bcm_systimer_devclass;
+
+DRIVER_MODULE(bcm_systimer, simplebus, bcm_systimer_driver, bcm_systimer_devclass, 0, 0);
+
+void
+cpu_initclocks(void)
+{
+	cpu_initclocks_bsp();
+}
+
+void
+DELAY(int usec)
+{
+	int32_t counts;
+	uint32_t first, last;
+
+	if (bcm_systimer_sc == NULL) {
+		for (; usec > 0; usec--)
+			for (counts = 200; counts > 0; counts--)
+				/* Prevent gcc from optimizing  out the loop */
+				cpufunc_nullop();
+		return;
+	}
+
+	/* Get the number of times to count */
+	counts = usec * ((bcm_systimer_tc.tc_frequency / 1000000) + 1);;
+
+	first = bcm_systimer_tc_read_4(SYSTIMER_CLO);
+
+	while (counts > 0) {
+		last = bcm_systimer_tc_read_4(SYSTIMER_CLO);
+		if (last == first)
+			continue;
+		if (last>first) {
+			counts -= (int32_t)(last - first);
+		} else {
+			counts -= (int32_t)((0xFFFFFFFF - first) + last);
+		}
+		first = last;
+	}
+}
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_vcbus.h b/sys/arm/broadcom/bcm2835/bcm2835_vcbus.h
new file mode 100644
index 0000000..1d91046
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_vcbus.h
@@ -0,0 +1,52 @@
+/*-
+ * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * Defines for converting physical address to VideoCore bus address and back
+ */
+
+#ifndef _BCM2835_VCBUS_H_
+#define _BCM2835_VCBUS_H_
+
+#define	BCM2835_VCBUS_SDRAM_CACHED	0x40000000
+#define	BCM2835_VCBUS_SDRAM_UNCACHED	0xC0000000
+
+/*
+ * Convert physical address to VC bus address. Should be used 
+ * when submitting address over mailbox interface 
+ */
+#define	PHYS_TO_VCBUS(pa)	((pa) + BCM2835_VCBUS_SDRAM_CACHED)
+
+/*
+ * Convert address from VC bus space to physical. Should be used
+ * when address is returned by VC over mailbox interface. e.g.
+ * framebuffer base
+ */
+#define	VCBUS_TO_PHYS(vca)	((vca) - BCM2835_VCBUS_SDRAM_CACHED)
+
+#endif /* _BCM2835_VCBUS_H_ */
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_wdog.c b/sys/arm/broadcom/bcm2835/bcm2835_wdog.c
new file mode 100644
index 0000000..c8570cb
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_wdog.c
@@ -0,0 +1,167 @@
+/*-
+ * Copyright (c) 2012 Alexander Rybalko <ray@freebsd.org>
+ * 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 <sys/watchdog.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+#include <machine/cpufunc.h>
+#include <machine/machdep.h>
+#include <machine/fdt.h>
+
+#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
+
+#define	BCM2835_PASWORD		0x5a
+
+#define BCM2835_WDOG_RESET	0
+#define BCM2835_PASSWORD_MASK	0xff000000
+#define BCM2835_PASSWORD_SHIFT	24
+#define BCM2835_WDOG_TIME_MASK	0x000fffff
+#define BCM2835_WDOG_TIME_SHIFT	0
+
+#define	READ(_sc, _r) bus_space_read_4((_sc)->bst, (_sc)->bsh, (_r))
+#define	WRITE(_sc, _r, _v) bus_space_write_4((_sc)->bst, (_sc)->bsh, (_r), (_v))
+
+#define BCM2835_RSTC_WRCFG_CLR		0xffffffcf
+#define BCM2835_RSTC_WRCFG_SET		0x00000030
+#define BCM2835_RSTC_WRCFG_FULL_RESET	0x00000020
+#define BCM2835_RSTC_RESET		0x00000102
+
+#define	BCM2835_RSTC_REG	0x00
+#define	BCM2835_RSTS_REG	0x04
+#define	BCM2835_WDOG_REG	0x08
+
+static struct bcmwd_softc *bcmwd_lsc = NULL;
+
+struct bcmwd_softc {
+	device_t		dev;
+	struct resource *	res;
+	bus_space_tag_t		bst;
+	bus_space_handle_t	bsh;
+	int			wdog_armed;
+	int			wdog_period;
+	char			wdog_passwd;
+};
+
+#ifdef notyet
+static void bcmwd_watchdog_fn(void *private, u_int cmd, int *error);
+#endif
+
+static int
+bcmwd_probe(device_t dev)
+{
+
+	if (ofw_bus_is_compatible(dev, "broadcom,bcm2835-wdt")) {
+		device_set_desc(dev, "BCM2708/2835 Watchdog");
+		return (BUS_PROBE_DEFAULT);
+	}
+
+	return (ENXIO);
+}
+
+static int
+bcmwd_attach(device_t dev)
+{
+	struct bcmwd_softc *sc;
+	int rid;
+
+	if (bcmwd_lsc != NULL)
+		return (ENXIO);
+
+	sc = device_get_softc(dev);
+	sc->wdog_period = 7;
+	sc->wdog_passwd = BCM2835_PASWORD;
+	sc->wdog_armed = 0;
+	sc->dev = dev;
+
+	rid = 0;
+	sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
+	if (sc->res == NULL) {
+		device_printf(dev, "could not allocate memory resource\n");
+		return (ENXIO);
+	}
+
+	sc->bst = rman_get_bustag(sc->res);
+	sc->bsh = rman_get_bushandle(sc->res);
+
+	bcmwd_lsc = sc;
+#ifdef notyet
+	EVENTHANDLER_REGISTER(watchdog_list, bcmwd_watchdog_fn, sc, 0);
+#endif
+	return (0);
+}
+
+#ifdef notyet
+static void
+bcmwd_watchdog_fn(void *private, u_int cmd, int *error)
+{
+	/* XXX: not yet */
+}
+#endif
+
+void
+bcmwd_watchdog_reset()
+{
+
+	if (bcmwd_lsc == NULL)
+		return;
+
+	WRITE(bcmwd_lsc, BCM2835_WDOG_REG,
+	    (BCM2835_PASWORD << BCM2835_PASSWORD_SHIFT) | 10);
+
+	WRITE(bcmwd_lsc, BCM2835_RSTC_REG,
+	    (READ(bcmwd_lsc, BCM2835_RSTC_REG) & BCM2835_RSTC_WRCFG_CLR) |
+		(BCM2835_PASWORD << BCM2835_PASSWORD_SHIFT) |
+		BCM2835_RSTC_WRCFG_FULL_RESET);
+}
+
+static device_method_t bcmwd_methods[] = {
+	DEVMETHOD(device_probe, bcmwd_probe),
+	DEVMETHOD(device_attach, bcmwd_attach),
+
+	DEVMETHOD_END
+};
+
+static driver_t bcmwd_driver = {
+	"bcmwd",
+	bcmwd_methods,
+	sizeof(struct bcmwd_softc),
+};
+static devclass_t bcmwd_devclass;
+
+DRIVER_MODULE(bcmwd, simplebus, bcmwd_driver, bcmwd_devclass, 0, 0);
diff --git a/sys/arm/broadcom/bcm2835/bcm2835_wdog.h b/sys/arm/broadcom/bcm2835/bcm2835_wdog.h
new file mode 100644
index 0000000..55569d9
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bcm2835_wdog.h
@@ -0,0 +1,32 @@
+/*-
+ * Copyright (c) 2012 Alexander Rybalko <ray@freebsd.org>
+ * 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.
+ * 
+ * $FreeBSD$
+ */
+#ifndef _BCM2835_WDOG_H_
+#define _BCM2835_WDOG_H_
+
+void bcmwd_watchdog_reset(void);
+#endif
diff --git a/sys/arm/broadcom/bcm2835/bus_space.c b/sys/arm/broadcom/bcm2835/bus_space.c
new file mode 100644
index 0000000..4cce820
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/bus_space.c
@@ -0,0 +1,113 @@
+/*-
+ * Copyright (C) 2012 FreeBSD Foundation
+ * 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. 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>
+
+/* Prototypes for all the bus_space structure functions */
+bs_protos(generic);
+bs_protos(generic_armv4);
+
+struct bus_space _base_tag = {
+	/* cookie */
+	.bs_cookie	= (void *) 0,
+	
+	/* mapping/unmapping */
+	.bs_map		= generic_bs_map,
+	.bs_unmap	= generic_bs_unmap,
+	.bs_subregion	= generic_bs_subregion,
+	
+	/* allocation/deallocation */
+	.bs_alloc	= generic_bs_alloc,
+	.bs_free	= generic_bs_free,
+	
+	/* barrier */
+	.bs_barrier	= generic_bs_barrier,
+	
+	/* read (single) */
+	.bs_r_1		= generic_bs_r_1,
+	.bs_r_2		= generic_armv4_bs_r_2,
+	.bs_r_4		= generic_bs_r_4,
+	.bs_r_8		= NULL,
+	
+	/* read multiple */
+	.bs_rm_1	= generic_bs_rm_1,
+	.bs_rm_2	= generic_armv4_bs_rm_2,
+	.bs_rm_4	= generic_bs_rm_4,
+	.bs_rm_8	= NULL,
+	
+	/* read region */
+	.bs_rr_1	= generic_bs_rr_1,
+	.bs_rr_2	= generic_armv4_bs_rr_2,
+	.bs_rr_4	= generic_bs_rr_4,
+	.bs_rr_8	= NULL,
+	
+	/* write (single) */
+	.bs_w_1		= generic_bs_w_1,
+	.bs_w_2		= generic_armv4_bs_w_2,
+	.bs_w_4		= generic_bs_w_4,
+	.bs_w_8		= NULL,
+	
+	/* write multiple */
+	.bs_wm_1	= generic_bs_wm_1,
+	.bs_wm_2	= generic_armv4_bs_wm_2,
+	.bs_wm_4	= generic_bs_wm_4,
+	.bs_wm_8	= NULL,
+	
+	/* write region */
+	.bs_wr_1	= generic_bs_wr_1,
+	.bs_wr_2	= generic_armv4_bs_wr_2,
+	.bs_wr_4	= generic_bs_wr_4,
+	.bs_wr_8	= NULL,
+	
+	/* set multiple */
+	/* XXX not implemented */
+	
+	/* set region */
+	.bs_sr_1	= NULL,
+	.bs_sr_2	= generic_armv4_bs_sr_2,
+	.bs_sr_4	= generic_bs_sr_4,
+	.bs_sr_8	= NULL,
+	
+	/* copy */
+	.bs_c_1		= NULL,
+	.bs_c_2		= generic_armv4_bs_c_2,
+	.bs_c_4		= NULL,
+	.bs_c_8		= NULL,
+};
+
+bus_space_tag_t fdtbus_bs_tag = &_base_tag;
diff --git a/sys/arm/broadcom/bcm2835/common.c b/sys/arm/broadcom/bcm2835/common.c
new file mode 100644
index 0000000..5c3c258
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/common.c
@@ -0,0 +1,75 @@
+/*-
+ * Copyright (C) 2008-2011 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 "opt_global.h"
+
+#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 <sys/kdb.h>
+#include <sys/reboot.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/openfirm.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+#include <machine/vmparam.h>
+
+struct fdt_fixup_entry fdt_fixup_table[] = {
+	{ NULL, NULL }
+};
+
+static int
+fdt_intc_decode_ic(phandle_t node, pcell_t *intr, int *interrupt, int *trig,
+    int *pol)
+{
+
+	if (!fdt_is_compatible(node, "broadcom,bcm2835-armctrl-ic"))
+		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_intc_decode_ic,
+	NULL
+};
diff --git a/sys/arm/broadcom/bcm2835/files.bcm2835 b/sys/arm/broadcom/bcm2835/files.bcm2835
new file mode 100644
index 0000000..827ae90
--- /dev/null
+++ b/sys/arm/broadcom/bcm2835/files.bcm2835
@@ -0,0 +1,19 @@
+# $FreeBSD$
+
+arm/broadcom/bcm2835/bcm2835_fb.c		optional sc
+arm/broadcom/bcm2835/bcm2835_intr.c		standard
+arm/broadcom/bcm2835/bcm2835_machdep.c		standard
+arm/broadcom/bcm2835/bcm2835_mbox.c		standard
+arm/broadcom/bcm2835/bcm2835_systimer.c		standard
+arm/broadcom/bcm2835/bcm2835_wdog.c		standard
+arm/broadcom/bcm2835/bus_space.c		optional fdt
+arm/broadcom/bcm2835/common.c			optional fdt
+
+arm/arm/bus_space_generic.c                     standard
+arm/arm/bus_space_asm_generic.S                 standard
+arm/arm/cpufunc_asm_arm11.S                     standard
+arm/arm/cpufunc_asm_armv5.S                     standard
+arm/arm/cpufunc_asm_armv6.S                     standard
+arm/arm/irq_dispatch.S                          standard
+
+kern/kern_clocksource.c                         standard
diff --git a/sys/arm/conf/RPI-B b/sys/arm/conf/RPI-B
new file mode 100644
index 0000000..6c4bce7
--- /dev/null
+++ b/sys/arm/conf/RPI-B
@@ -0,0 +1,101 @@
+# RPI-B -- Custom configuration for the Raspberry Pi
+#
+# For more information on this file, please read the handbook section on
+# Kernel Configuration Files:
+#
+#    http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
+#
+# The handbook is also available locally in /usr/share/doc/handbook
+# if you've installed the doc distribution, otherwise always see the
+# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
+# latest information.
+#
+# An exhaustive list of options and more detailed explanations of the
+# device lines is also present in the ../../conf/NOTES and NOTES files. 
+# If you are in doubt as to the purpose or necessity of a line, check first 
+# in NOTES.
+#
+# $FreeBSD$
+
+ident		RPI-B
+machine		arm	armv6
+cpu 		CPU_ARM11
+
+files		"../broadcom/bcm2835/files.bcm2835"
+makeoptions	MODULES_OVERRIDE=""
+
+options		KERNVIRTADDR=0xc0100000
+makeoptions	KERNVIRTADDR=0xc0100000
+options		KERNPHYSADDR=0x00100000
+makeoptions	KERNPHYSADDR=0x00100000
+options		PHYSADDR=0x00000000
+options		STARTUP_PAGETABLE_ADDR=0x01000000
+
+makeoptions	DEBUG=-g		#Build kernel with gdb(1) debug symbols
+options 	HZ=100
+
+options 	SCHED_4BSD		#4BSD scheduler
+options 	INET			#InterNETworking
+options 	FFS			#Berkeley Fast Filesystem
+options 	SOFTUPDATES		#Enable FFS soft updates support
+options 	UFS_ACL			#Support for access control lists
+options 	UFS_DIRHASH		#Improve performance on big directories
+device		snp
+
+# options 	NFSCL		#Network Filesystem Client
+# options 	NFS_ROOT		#NFS usable as /, requires NFSCLIENT
+# options		BOOTP_NFSROOT
+# options		BOOTP_COMPAT
+# options		BOOTP
+# options		BOOTP_NFSV3
+# options		BOOTP_WIRED_TO=ue0
+
+options 	PSEUDOFS		#Pseudo-filesystem framework
+options 	COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
+options 	SCSI_DELAY=5000		#Delay (in ms) before probing SCSI
+options 	KTRACE			#ktrace(1) support
+options 	SYSVSHM			#SYSV-style shared memory
+options 	SYSVMSG			#SYSV-style message queues
+options 	SYSVSEM			#SYSV-style semaphores
+options 	_KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
+options 	KBD_INSTALL_CDEV	# install a CDEV entry in /dev
+
+options 	PREEMPTION
+
+device		bpf
+device		loop
+device		ether
+device		uart
+device		pl011
+
+device		pty
+
+# NOTE: serial console will be disabled if syscons enabled
+# Uncomment following lines for framebuffer/syscons support
+# device		sc
+# device		kbdmux
+# options         SC_DFLT_FONT    # compile font in
+# makeoptions     SC_DFLT_FONT=cp437
+
+options 	KDB
+options 	DDB			#Enable the kernel debugger
+options 	INVARIANTS		#Enable calls of extra sanity checking
+options 	INVARIANT_SUPPORT	#Extra sanity checks of internal structures, required by INVARIANTS
+
+device		md
+device		random		# Entropy device
+
+# Not yet: USB support
+# device		usb
+# options 	USB_DEBUG
+
+
+# Not yet: USB Ethernet support, requires miibus
+# device		mii
+# device		smc
+# device		smcphy
+
+# Flattened Device Tree
+options         FDT
+options         FDT_DTB_STATIC
+makeoptions     FDT_DTS_FILE=bcm2835-rpi-b.dts