diff --git a/hw/milkymist-hw.h b/hw/milkymist-hw.h
new file mode 100644
index 0000000..15acdbc
--- /dev/null
+++ b/hw/milkymist-hw.h
@@ -0,0 +1,204 @@
+#ifndef QEMU_HW_MILKYMIST_H
+#define QEMU_HW_MILKYMIST_H
+
+static inline DeviceState *milkymist_uart_create(target_phys_addr_t base,
+        qemu_irq rx_irq, qemu_irq tx_irq)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "milkymist-uart");
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 0, rx_irq);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 1, tx_irq);
+
+    return dev;
+}
+
+static inline DeviceState *milkymist_hpdmc_create(target_phys_addr_t base)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "milkymist-hpdmc");
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+
+    return dev;
+}
+
+static inline DeviceState *milkymist_memcard_create(target_phys_addr_t base)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "milkymist-memcard");
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+
+    return dev;
+}
+
+static inline DeviceState *milkymist_vgafb_create(target_phys_addr_t base,
+        uint32_t fb_offset, uint32_t fb_mask)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "milkymist-vgafb");
+    qdev_prop_set_uint32(dev, "fb_offset", fb_offset);
+    qdev_prop_set_uint32(dev, "fb_mask", fb_mask);
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+
+    return dev;
+}
+
+static inline DeviceState *milkymist_sysctl_create(target_phys_addr_t base,
+        qemu_irq gpio_irq, qemu_irq timer0_irq, qemu_irq timer1_irq,
+        uint32_t freq_hz, uint32_t system_id, uint32_t capabilities,
+        uint32_t gpio_strappings)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "milkymist-sysctl");
+    qdev_prop_set_uint32(dev, "frequency", freq_hz);
+    qdev_prop_set_uint32(dev, "systemid", system_id);
+    qdev_prop_set_uint32(dev, "capabilities", capabilities);
+    qdev_prop_set_uint32(dev, "gpio_strappings", gpio_strappings);
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 0, gpio_irq);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 1, timer0_irq);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 2, timer1_irq);
+
+    return dev;
+}
+
+static inline DeviceState *milkymist_pfpu_create(target_phys_addr_t base,
+        qemu_irq irq)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "milkymist-pfpu");
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);
+    return dev;
+}
+
+#ifdef CONFIG_OPENGL
+#include <X11/Xlib.h>
+#include <GL/glx.h>
+static const int glx_fbconfig_attr[] = {
+    GLX_GREEN_SIZE, 5,
+    GLX_GREEN_SIZE, 6,
+    GLX_BLUE_SIZE, 5,
+    None
+};
+#endif
+
+static inline DeviceState *milkymist_tmu2_create(target_phys_addr_t base,
+        qemu_irq irq)
+{
+#ifdef CONFIG_OPENGL
+    DeviceState *dev;
+    Display *d;
+    GLXFBConfig *configs;
+    int nelements;
+    int ver_major, ver_minor;
+
+    if (display_type == DT_NOGRAPHIC) {
+        return NULL;
+    }
+
+    /* check that GLX will work */
+    d = XOpenDisplay(NULL);
+    if (d == NULL) {
+        return NULL;
+    }
+
+    if (!glXQueryVersion(d, &ver_major, &ver_minor)) {
+        /* Yeah, sometimes getting the GLX version can fail.
+         * Isn't X beautiful? */
+        XCloseDisplay(d);
+        return NULL;
+    }
+
+    if ((ver_major < 1) || ((ver_major == 1) && (ver_minor < 3))) {
+        printf("Your GLX version is %d.%d,"
+          "but TMU emulation needs at least 1.3. TMU disabled.\n",
+          ver_major, ver_minor);
+        XCloseDisplay(d);
+        return NULL;
+    }
+
+    configs = glXChooseFBConfig(d, 0, glx_fbconfig_attr, &nelements);
+    if (configs == NULL) {
+        XCloseDisplay(d);
+        return NULL;
+    }
+
+    XFree(configs);
+    XCloseDisplay(d);
+
+    dev = qdev_create(NULL, "milkymist-tmu2");
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);
+
+    return dev;
+#else
+    return NULL;
+#endif
+}
+
+static inline DeviceState *milkymist_ac97_create(target_phys_addr_t base,
+        qemu_irq crrequest_irq, qemu_irq crreply_irq, qemu_irq dmar_irq,
+        qemu_irq dmaw_irq)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "milkymist-ac97");
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 0, crrequest_irq);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 1, crreply_irq);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 2, dmar_irq);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 3, dmaw_irq);
+
+    return dev;
+}
+
+static inline DeviceState *milkymist_minimac_create(target_phys_addr_t base,
+        qemu_irq rx_irq, qemu_irq tx_irq)
+{
+    DeviceState *dev;
+
+    qemu_check_nic_model(&nd_table[0], "minimac");
+    dev = qdev_create(NULL, "milkymist-minimac");
+    qdev_set_nic_properties(dev, &nd_table[0]);
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 0, rx_irq);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 1, tx_irq);
+
+    return dev;
+}
+
+static inline DeviceState *milkymist_softusb_create(target_phys_addr_t base,
+        qemu_irq irq, uint32_t pmem_base, uint32_t pmem_size,
+        uint32_t dmem_base, uint32_t dmem_size)
+{
+    DeviceState *dev;
+
+    dev = qdev_create(NULL, "milkymist-softusb");
+    qdev_prop_set_uint32(dev, "pmem_base", pmem_base);
+    qdev_prop_set_uint32(dev, "pmem_size", pmem_size);
+    qdev_prop_set_uint32(dev, "dmem_base", dmem_base);
+    qdev_prop_set_uint32(dev, "dmem_size", dmem_size);
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+    sysbus_connect_irq(sysbus_from_qdev(dev), 0, irq);
+
+    return dev;
+}
+
+#endif /* QEMU_HW_MILKYMIST_H */
