[rtems-libbsd commit] imx6_ccm: Import from FreeBSD
Christian Mauderer
christianm at rtems.org
Wed Apr 15 15:11:43 UTC 2020
Module: rtems-libbsd
Branch: master
Commit: 7bafcafd9bd71f87f932b9180dc086b63e0b06f8
Changeset: http://git.rtems.org/rtems-libbsd/commit/?id=7bafcafd9bd71f87f932b9180dc086b63e0b06f8
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Fri Feb 8 12:02:05 2019 +0100
imx6_ccm: Import from FreeBSD
Update #3869.
---
freebsd/sys/arm/freescale/imx/imx6_anatopreg.h | 193 ++++++++++
freebsd/sys/arm/freescale/imx/imx6_anatopvar.h | 49 +++
freebsd/sys/arm/freescale/imx/imx6_ccm.c | 468 +++++++++++++++++++++++++
freebsd/sys/arm/freescale/imx/imx6_ccmreg.h | 149 ++++++++
freebsd/sys/arm/freescale/imx/imx6_machdep.h | 38 ++
freebsd/sys/arm/freescale/imx/imx_machdep.h | 72 ++++
6 files changed, 969 insertions(+)
diff --git a/freebsd/sys/arm/freescale/imx/imx6_anatopreg.h b/freebsd/sys/arm/freescale/imx/imx6_anatopreg.h
new file mode 100644
index 0000000..e826952
--- /dev/null
+++ b/freebsd/sys/arm/freescale/imx/imx6_anatopreg.h
@@ -0,0 +1,193 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2013 Ian Lepore <ian at 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 IMX6_ANATOPREG_H
+#define IMX6_ANATOPREG_H
+
+#define IMX6_ANALOG_CCM_PLL_ARM 0x000
+#define IMX6_ANALOG_CCM_PLL_ARM_SET 0x004
+#define IMX6_ANALOG_CCM_PLL_ARM_CLR 0x008
+#define IMX6_ANALOG_CCM_PLL_ARM_TOG 0x00C
+#define IMX6_ANALOG_CCM_PLL_ARM_DIV_MASK 0x7F
+#define IMX6_ANALOG_CCM_PLL_ARM_LOCK (1U << 31)
+#define IMX6_ANALOG_CCM_PLL_ARM_BYPASS (1 << 16)
+#define IMX6_ANALOG_CCM_PLL_ARM_CLK_SRC_MASK (0x03 << 16)
+#define IMX6_ANALOG_CCM_PLL_USB1 0x010
+#define IMX6_ANALOG_CCM_PLL_USB1_SET 0x014
+#define IMX6_ANALOG_CCM_PLL_USB1_CLR 0x018
+#define IMX6_ANALOG_CCM_PLL_USB1_TOG 0x01C
+#define IMX6_ANALOG_CCM_PLL_USB_LOCK (1U << 31)
+#define IMX6_ANALOG_CCM_PLL_USB_BYPASS (1 << 16)
+#define IMX6_ANALOG_CCM_PLL_USB_ENABLE (1 << 13)
+#define IMX6_ANALOG_CCM_PLL_USB_POWER (1 << 12)
+#define IMX6_ANALOG_CCM_PLL_USB_EN_USB_CLKS (1 << 6)
+#define IMX6_ANALOG_CCM_PLL_USB2 0x020
+#define IMX6_ANALOG_CCM_PLL_USB2_SET 0x024
+#define IMX6_ANALOG_CCM_PLL_USB2_CLR 0x028
+#define IMX6_ANALOG_CCM_PLL_USB2_TOG 0x02C
+#define IMX6_ANALOG_CCM_PLL_SYS 0x030
+#define IMX6_ANALOG_CCM_PLL_SYS_SET 0x034
+#define IMX6_ANALOG_CCM_PLL_SYS_CLR 0x038
+#define IMX6_ANALOG_CCM_PLL_SYS_TOG 0x03C
+#define IMX6_ANALOG_CCM_PLL_SYS_SS 0x040
+#define IMX6_ANALOG_CCM_PLL_SYS_NUM 0x050
+#define IMX6_ANALOG_CCM_PLL_SYS_DENOM 0x060
+#define IMX6_ANALOG_CCM_PLL_AUDIO 0x070
+#define IMX6_ANALOG_CCM_PLL_AUDIO_ENABLE (1 << 13)
+#define IMX6_ANALOG_CCM_PLL_AUDIO_DIV_SELECT_SHIFT 0
+#define IMX6_ANALOG_CCM_PLL_AUDIO_DIV_SELECT_MASK 0x7f
+#define IMX6_ANALOG_CCM_PLL_AUDIO_SET 0x074
+#define IMX6_ANALOG_CCM_PLL_AUDIO_CLR 0x078
+#define IMX6_ANALOG_CCM_PLL_AUDIO_TOG 0x07C
+#define IMX6_ANALOG_CCM_PLL_AUDIO_NUM 0x080
+#define IMX6_ANALOG_CCM_PLL_AUDIO_DENOM 0x090
+#define IMX6_ANALOG_CCM_PLL_VIDEO 0x0A0
+#define IMX6_ANALOG_CCM_PLL_VIDEO_SET 0x0A4
+#define IMX6_ANALOG_CCM_PLL_VIDEO_CLR 0x0A8
+#define IMX6_ANALOG_CCM_PLL_VIDEO_TOG 0x0AC
+#define IMX6_ANALOG_CCM_PLL_VIDEO_NUM 0x0B0
+#define IMX6_ANALOG_CCM_PLL_VIDEO_DENOM 0x0C0
+#define IMX6_ANALOG_CCM_PLL_MLB 0x0D0
+#define IMX6_ANALOG_CCM_PLL_MLB_SET 0x0D4
+#define IMX6_ANALOG_CCM_PLL_MLB_CLR 0x0D8
+#define IMX6_ANALOG_CCM_PLL_MLB_TOG 0x0DC
+#define IMX6_ANALOG_CCM_PLL_ENET 0x0E0
+#define IMX6_ANALOG_CCM_PLL_ENET_SET 0x0E4
+#define IMX6_ANALOG_CCM_PLL_ENET_CLR 0x0E8
+#define IMX6_ANALOG_CCM_PLL_ENET_TOG 0x0EC
+#define IMX6_ANALOG_CCM_PFD_480 0x0F0
+#define IMX6_ANALOG_CCM_PFD_480_SET 0x0F4
+#define IMX6_ANALOG_CCM_PFD_480_CLR 0x0F8
+#define IMX6_ANALOG_CCM_PFD_480_TOG 0x0FC
+#define IMX6_ANALOG_CCM_PFD_528 0x100
+#define IMX6_ANALOG_CCM_PFD_528_SET 0x104
+#define IMX6_ANALOG_CCM_PFD_528_CLR 0x108
+#define IMX6_ANALOG_CCM_PFD_528_TOG 0x10C
+
+#define IMX6_ANALOG_PMU_REG_CORE 0x140
+#define IMX6_ANALOG_PMU_REG2_TARG_SHIFT 18
+#define IMX6_ANALOG_PMU_REG2_TARG_MASK \
+ (0x1f << IMX6_ANALOG_PMU_REG2_TARG_SHIFT)
+#define IMX6_ANALOG_PMU_REG1_TARG_SHIFT 9
+#define IMX6_ANALOG_PMU_REG1_TARG_MASK \
+ (0x1f << IMX6_ANALOG_PMU_REG1_TARG_SHIFT)
+#define IMX6_ANALOG_PMU_REG0_TARG_SHIFT 0
+#define IMX6_ANALOG_PMU_REG0_TARG_MASK \
+ (0x1f << IMX6_ANALOG_PMU_REG0_TARG_SHIFT)
+
+#define IMX6_ANALOG_PMU_MISC0 0x150
+#define IMX6_ANALOG_PMU_MISC0_SET 0x154
+#define IMX6_ANALOG_PMU_MISC0_CLR 0x158
+#define IMX6_ANALOG_PMU_MISC0_TOG 0x15C
+#define IMX6_ANALOG_PMU_MISC0_SELFBIASOFF (1 << 3)
+
+#define IMX6_ANALOG_PMU_MISC1 0x160
+#define IMX6_ANALOG_PMU_MISC1_SET 0x164
+#define IMX6_ANALOG_PMU_MISC1_CLR 0x168
+#define IMX6_ANALOG_PMU_MISC1_TOG 0x16C
+#define IMX6_ANALOG_PMU_MISC1_IRQ_TEMPSENSE (1 << 29)
+
+#define IMX6_ANALOG_PMU_MISC2 0x170
+#define IMX6_ANALOG_PMU_MISC2_SET 0x174
+#define IMX6_ANALOG_PMU_MISC2_CLR 0x178
+#define IMX6_ANALOG_PMU_MISC2_TOG 0x17C
+
+/*
+ * Note that the ANALOG_CCM_MISCn registers are the same as the PMU_MISCn
+ * registers; some bits conceptually belong to the PMU and some to the CCM.
+ */
+#define IMX6_ANALOG_CCM_MISC0 IMX6_ANALOG_PMU_MISC0
+#define IMX6_ANALOG_CCM_MISC0_SET IMX6_ANALOG_PMU_MISC0_SET
+#define IMX6_ANALOG_CCM_MISC0_CLR IMX6_ANALOG_PMU_MISC0_CLR
+#define IMX6_ANALOG_CCM_MISC0_TOG IMX6_ANALOG_PMU_MISC0_TOG
+
+#define IMX6_ANALOG_CCM_MISC2 IMX6_ANALOG_PMU_MISC2
+#define IMX6_ANALOG_CCM_MISC2_SET IMX6_ANALOG_PMU_MISC2_SET
+#define IMX6_ANALOG_CCM_MISC2_CLR IMX6_ANALOG_PMU_MISC2_CLR
+#define IMX6_ANALOG_CCM_MISC2_TOG IMX6_ANALOG_PMU_MISC2_TOG
+
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0 0x180
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_SET 0x184
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_CLR 0x188
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_TOG 0x18C
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_TOG 0x18C
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_ALARM_SHIFT 20
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_ALARM_MASK \
+ (0xfff << IMX6_ANALOG_TEMPMON_TEMPSENSE0_ALARM_SHIFT)
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_TEMP_CNT_SHIFT 8
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_TEMP_CNT_MASK \
+ (0xfff << IMX6_ANALOG_TEMPMON_TEMPSENSE0_TEMP_CNT_SHIFT)
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_VALID 0x4
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_MEASURE 0x2
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE0_POWER_DOWN 0x1
+
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE1 0x190
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE1_SET 0x194
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE1_CLR 0x198
+#define IMX6_ANALOG_TEMPMON_TEMPSENSE1_TOG 0x19C
+
+#define IMX6_ANALOG_USB1_VBUS_DETECT 0x1A0
+#define IMX6_ANALOG_USB1_VBUS_DETECT_SET 0x1A4
+#define IMX6_ANALOG_USB1_VBUS_DETECT_CLR 0x1A8
+#define IMX6_ANALOG_USB1_VBUS_DETECT_TOG 0x1AC
+#define IMX6_ANALOG_USB1_CHRG_DETECT 0x1B0
+#define IMX6_ANALOG_USB1_CHRG_DETECT_SET 0x1B4
+#define IMX6_ANALOG_USB1_CHRG_DETECT_CLR 0x1B8
+#define IMX6_ANALOG_USB1_CHRG_DETECT_TOG 0x1BC
+#define IMX6_ANALOG_USB_CHRG_DETECT_N_ENABLE (1 << 20) /* EN_B */
+#define IMX6_ANALOG_USB_CHRG_DETECT_N_CHK_CHRG (1 << 19) /* CHK_CHRG_B */
+#define IMX6_ANALOG_USB_CHRG_DETECT_CHK_CONTACT (1 << 18)
+#define IMX6_ANALOG_USB1_VBUS_DETECT_STAT 0x1C0
+#define IMX6_ANALOG_USB1_CHRG_DETECT_STAT 0x1D0
+#define IMX6_ANALOG_USB1_MISC 0x1F0
+#define IMX6_ANALOG_USB1_MISC_SET 0x1F4
+#define IMX6_ANALOG_USB1_MISC_CLR 0x1F8
+#define IMX6_ANALOG_USB1_MISC_TOG 0x1FC
+#define IMX6_ANALOG_USB2_VBUS_DETECT 0x200
+#define IMX6_ANALOG_USB2_VBUS_DETECT_SET 0x204
+#define IMX6_ANALOG_USB2_VBUS_DETECT_CLR 0x208
+#define IMX6_ANALOG_USB2_VBUS_DETECT_TOG 0x20C
+#define IMX6_ANALOG_USB2_CHRG_DETECT 0x210
+#define IMX6_ANALOG_USB2_CHRG_DETECT_SET 0x214
+#define IMX6_ANALOG_USB2_CHRG_DETECT_CLR 0x218
+#define IMX6_ANALOG_USB2_CHRG_DETECT_TOG 0x21C
+#define IMX6_ANALOG_USB2_VBUS_DETECT_STAT 0x220
+#define IMX6_ANALOG_USB2_CHRG_DETECT_STAT 0x230
+#define IMX6_ANALOG_USB2_MISC 0x250
+#define IMX6_ANALOG_USB2_MISC_SET 0x254
+#define IMX6_ANALOG_USB2_MISC_CLR 0x258
+#define IMX6_ANALOG_USB2_MISC_TOG 0x25C
+#define IMX6_ANALOG_DIGPROG 0x260
+#define IMX6_ANALOG_DIGPROG_SL 0x280
+#define IMX6_ANALOG_DIGPROG_SOCTYPE_SHIFT 16
+#define IMX6_ANALOG_DIGPROG_SOCTYPE_MASK \
+ (0xff << IMX6_ANALOG_DIGPROG_SOCTYPE_SHIFT)
+
+#endif
diff --git a/freebsd/sys/arm/freescale/imx/imx6_anatopvar.h b/freebsd/sys/arm/freescale/imx/imx6_anatopvar.h
new file mode 100644
index 0000000..7378bf2
--- /dev/null
+++ b/freebsd/sys/arm/freescale/imx/imx6_anatopvar.h
@@ -0,0 +1,49 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2013 Ian Lepore <ian at 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 IMX6_ANATOPVAR_H
+#define IMX6_ANATOPVAR_H
+
+/*
+ * All registers controlling various analog aspects of the SoC (such as PLLs or
+ * voltage regulators or USB VBUS detection) are gathered together under the
+ * anatop device (because of newbus hierarchical resource management), but other
+ * drivers such as CMM or USBPHY need access to these registers. These
+ * functions let them have at the hardware directly. No effort is made by these
+ * functions to mediate concurrent access.
+ */
+uint32_t imx6_anatop_read_4(bus_size_t _offset);
+void imx6_anatop_write_4(bus_size_t _offset, uint32_t _value);
+
+uint32_t imx6_get_cpu_clock(void);
+
+uint32_t pll4_configure_output(uint32_t mfi, uint32_t mfn, uint32_t mfd);
+
+#endif
diff --git a/freebsd/sys/arm/freescale/imx/imx6_ccm.c b/freebsd/sys/arm/freescale/imx/imx6_ccm.c
new file mode 100644
index 0000000..2993f1d
--- /dev/null
+++ b/freebsd/sys/arm/freescale/imx/imx6_ccm.c
@@ -0,0 +1,468 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2013 Ian Lepore <ian at 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("$FreeBSD$");
+
+/*
+ * Clocks and power control driver for Freescale i.MX6 family of SoCs.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+
+#include <arm/freescale/imx/imx6_anatopreg.h>
+#include <arm/freescale/imx/imx6_anatopvar.h>
+#include <arm/freescale/imx/imx6_ccmreg.h>
+#include <arm/freescale/imx/imx_machdep.h>
+#include <arm/freescale/imx/imx_ccmvar.h>
+
+#ifndef CCGR_CLK_MODE_ALWAYS
+#define CCGR_CLK_MODE_OFF 0
+#define CCGR_CLK_MODE_RUNMODE 1
+#define CCGR_CLK_MODE_ALWAYS 3
+#endif
+
+struct ccm_softc {
+ device_t dev;
+ struct resource *mem_res;
+};
+
+static struct ccm_softc *ccm_sc;
+
+static inline uint32_t
+RD4(struct ccm_softc *sc, bus_size_t off)
+{
+
+ return (bus_read_4(sc->mem_res, off));
+}
+
+static inline void
+WR4(struct ccm_softc *sc, bus_size_t off, uint32_t val)
+{
+
+ bus_write_4(sc->mem_res, off, val);
+}
+
+/*
+ * Until we have a fully functional ccm driver which implements the fdt_clock
+ * interface, use the age-old workaround of unconditionally enabling the clocks
+ * for devices we might need to use. The SoC defaults to most clocks enabled,
+ * but the rom boot code and u-boot disable a few of them. We turn on only
+ * what's needed to run the chip plus devices we have drivers for, and turn off
+ * devices we don't yet have drivers for. (Note that USB is not turned on here
+ * because that is one we do when the driver asks for it.)
+ */
+static void
+ccm_init_gates(struct ccm_softc *sc)
+{
+ uint32_t reg;
+
+ /* ahpbdma, aipstz 1 & 2 buses */
+ reg = CCGR0_AIPS_TZ1 | CCGR0_AIPS_TZ2 | CCGR0_ABPHDMA;
+ WR4(sc, CCM_CCGR0, reg);
+
+ /* enet, epit, gpt, spi */
+ reg = CCGR1_ENET | CCGR1_EPIT1 | CCGR1_GPT | CCGR1_ECSPI1 |
+ CCGR1_ECSPI2 | CCGR1_ECSPI3 | CCGR1_ECSPI4 | CCGR1_ECSPI5;
+ WR4(sc, CCM_CCGR1, reg);
+
+ /* ipmux & ipsync (bridges), iomux, i2c */
+ reg = CCGR2_I2C1 | CCGR2_I2C2 | CCGR2_I2C3 | CCGR2_IIM |
+ CCGR2_IOMUX_IPT | CCGR2_IPMUX1 | CCGR2_IPMUX2 | CCGR2_IPMUX3 |
+ CCGR2_IPSYNC_IP2APB_TZASC1 | CCGR2_IPSYNC_IP2APB_TZASC2 |
+ CCGR2_IPSYNC_VDOA;
+ WR4(sc, CCM_CCGR2, reg);
+
+ /* DDR memory controller */
+ reg = CCGR3_OCRAM | CCGR3_MMDC_CORE_IPG |
+ CCGR3_MMDC_CORE_ACLK_FAST | CCGR3_CG11 | CCGR3_CG13;
+ WR4(sc, CCM_CCGR3, reg);
+
+ /* pl301 bus crossbar */
+ reg = CCGR4_PL301_MX6QFAST1_S133 |
+ CCGR4_PL301_MX6QPER1_BCH | CCGR4_PL301_MX6QPER2_MAIN;
+ WR4(sc, CCM_CCGR4, reg);
+
+ /* uarts, ssi, sdma */
+ reg = CCGR5_SDMA | CCGR5_SSI1 | CCGR5_SSI2 | CCGR5_SSI3 |
+ CCGR5_UART | CCGR5_UART_SERIAL;
+ WR4(sc, CCM_CCGR5, reg);
+
+ /* usdhc 1-4, usboh3 */
+ reg = CCGR6_USBOH3 | CCGR6_USDHC1 | CCGR6_USDHC2 |
+ CCGR6_USDHC3 | CCGR6_USDHC4;
+ WR4(sc, CCM_CCGR6, reg);
+}
+
+static int
+ccm_detach(device_t dev)
+{
+ struct ccm_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ if (sc->mem_res != NULL)
+ bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res);
+
+ return (0);
+}
+
+static int
+ccm_attach(device_t dev)
+{
+ struct ccm_softc *sc;
+ int err, rid;
+ uint32_t reg;
+
+ sc = device_get_softc(dev);
+ err = 0;
+
+ /* Allocate bus_space resources. */
+ rid = 0;
+ sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (sc->mem_res == NULL) {
+ device_printf(dev, "Cannot allocate memory resources\n");
+ err = ENXIO;
+ goto out;
+ }
+
+ ccm_sc = sc;
+
+ /*
+ * Configure the Low Power Mode setting to leave the ARM core power on
+ * when a WFI instruction is executed. This lets the MPCore timers and
+ * GIC continue to run, which is helpful when the only thing that can
+ * wake you up is an MPCore Private Timer interrupt delivered via GIC.
+ *
+ * XXX Based on the docs, setting CCM_CGPR_INT_MEM_CLK_LPM shouldn't be
+ * required when the LPM bits are set to LPM_RUN. But experimentally
+ * I've experienced a fairly rare lockup when not setting it. I was
+ * unable to prove conclusively that the lockup was related to power
+ * management or that this definitively fixes it. Revisit this.
+ */
+ reg = RD4(sc, CCM_CGPR);
+ reg |= CCM_CGPR_INT_MEM_CLK_LPM;
+ WR4(sc, CCM_CGPR, reg);
+ reg = RD4(sc, CCM_CLPCR);
+ reg = (reg & ~CCM_CLPCR_LPM_MASK) | CCM_CLPCR_LPM_RUN;
+ WR4(sc, CCM_CLPCR, reg);
+
+ ccm_init_gates(sc);
+
+ err = 0;
+
+out:
+
+ if (err != 0)
+ ccm_detach(dev);
+
+ return (err);
+}
+
+static int
+ccm_probe(device_t dev)
+{
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (ofw_bus_is_compatible(dev, "fsl,imx6q-ccm") == 0)
+ return (ENXIO);
+
+ device_set_desc(dev, "Freescale i.MX6 Clock Control Module");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+void
+imx_ccm_ssi_configure(device_t _ssidev)
+{
+ struct ccm_softc *sc;
+ uint32_t reg;
+
+ sc = ccm_sc;
+
+ /*
+ * Select PLL4 (Audio PLL) clock multiplexer as source.
+ * PLL output frequency = Fref * (DIV_SELECT + NUM/DENOM).
+ */
+
+ reg = RD4(sc, CCM_CSCMR1);
+ reg &= ~(SSI_CLK_SEL_M << SSI1_CLK_SEL_S);
+ reg |= (SSI_CLK_SEL_PLL4 << SSI1_CLK_SEL_S);
+ reg &= ~(SSI_CLK_SEL_M << SSI2_CLK_SEL_S);
+ reg |= (SSI_CLK_SEL_PLL4 << SSI2_CLK_SEL_S);
+ reg &= ~(SSI_CLK_SEL_M << SSI3_CLK_SEL_S);
+ reg |= (SSI_CLK_SEL_PLL4 << SSI3_CLK_SEL_S);
+ WR4(sc, CCM_CSCMR1, reg);
+
+ /*
+ * Ensure we have set hardware-default values
+ * for pre and post dividers.
+ */
+
+ /* SSI1 and SSI3 */
+ reg = RD4(sc, CCM_CS1CDR);
+ /* Divide by 2 */
+ reg &= ~(SSI_CLK_PODF_MASK << SSI1_CLK_PODF_SHIFT);
+ reg &= ~(SSI_CLK_PODF_MASK << SSI3_CLK_PODF_SHIFT);
+ reg |= (0x1 << SSI1_CLK_PODF_SHIFT);
+ reg |= (0x1 << SSI3_CLK_PODF_SHIFT);
+ /* Divide by 4 */
+ reg &= ~(SSI_CLK_PRED_MASK << SSI1_CLK_PRED_SHIFT);
+ reg &= ~(SSI_CLK_PRED_MASK << SSI3_CLK_PRED_SHIFT);
+ reg |= (0x3 << SSI1_CLK_PRED_SHIFT);
+ reg |= (0x3 << SSI3_CLK_PRED_SHIFT);
+ WR4(sc, CCM_CS1CDR, reg);
+
+ /* SSI2 */
+ reg = RD4(sc, CCM_CS2CDR);
+ /* Divide by 2 */
+ reg &= ~(SSI_CLK_PODF_MASK << SSI2_CLK_PODF_SHIFT);
+ reg |= (0x1 << SSI2_CLK_PODF_SHIFT);
+ /* Divide by 4 */
+ reg &= ~(SSI_CLK_PRED_MASK << SSI2_CLK_PRED_SHIFT);
+ reg |= (0x3 << SSI2_CLK_PRED_SHIFT);
+ WR4(sc, CCM_CS2CDR, reg);
+}
+
+void
+imx_ccm_usb_enable(device_t _usbdev)
+{
+
+ /*
+ * For imx6, the USBOH3 clock gate is bits 0-1 of CCGR6, so no need for
+ * shifting and masking here, just set the low-order two bits to ALWAYS.
+ */
+ WR4(ccm_sc, CCM_CCGR6, RD4(ccm_sc, CCM_CCGR6) | CCGR_CLK_MODE_ALWAYS);
+}
+
+void
+imx_ccm_usbphy_enable(device_t _phydev)
+{
+ /*
+ * XXX Which unit?
+ * Right now it's not clear how to figure from fdt data which phy unit
+ * we're supposed to operate on. Until this is worked out, just enable
+ * both PHYs.
+ */
+#if 0
+ int phy_num, regoff;
+
+ phy_num = 0; /* XXX */
+
+ switch (phy_num) {
+ case 0:
+ regoff = 0;
+ break;
+ case 1:
+ regoff = 0x10;
+ break;
+ default:
+ device_printf(ccm_sc->dev, "Bad PHY number %u,\n",
+ phy_num);
+ return;
+ }
+
+ imx6_anatop_write_4(IMX6_ANALOG_CCM_PLL_USB1 + regoff,
+ IMX6_ANALOG_CCM_PLL_USB_ENABLE |
+ IMX6_ANALOG_CCM_PLL_USB_POWER |
+ IMX6_ANALOG_CCM_PLL_USB_EN_USB_CLKS);
+#else
+ imx6_anatop_write_4(IMX6_ANALOG_CCM_PLL_USB1 + 0,
+ IMX6_ANALOG_CCM_PLL_USB_ENABLE |
+ IMX6_ANALOG_CCM_PLL_USB_POWER |
+ IMX6_ANALOG_CCM_PLL_USB_EN_USB_CLKS);
+
+ imx6_anatop_write_4(IMX6_ANALOG_CCM_PLL_USB1 + 0x10,
+ IMX6_ANALOG_CCM_PLL_USB_ENABLE |
+ IMX6_ANALOG_CCM_PLL_USB_POWER |
+ IMX6_ANALOG_CCM_PLL_USB_EN_USB_CLKS);
+#endif
+}
+
+int
+imx6_ccm_sata_enable(void)
+{
+ uint32_t v;
+ int timeout;
+
+ /* Un-gate the sata controller. */
+ WR4(ccm_sc, CCM_CCGR5, RD4(ccm_sc, CCM_CCGR5) | CCGR5_SATA);
+
+ /* Power up the PLL that feeds ENET/SATA/PCI phys, wait for lock. */
+ v = RD4(ccm_sc, CCM_ANALOG_PLL_ENET);
+ v &= ~CCM_ANALOG_PLL_ENET_POWERDOWN;
+ WR4(ccm_sc, CCM_ANALOG_PLL_ENET, v);
+
+ for (timeout = 100000; timeout > 0; timeout--) {
+ if (RD4(ccm_sc, CCM_ANALOG_PLL_ENET) &
+ CCM_ANALOG_PLL_ENET_LOCK) {
+ break;
+ }
+ }
+ if (timeout <= 0) {
+ return ETIMEDOUT;
+ }
+
+ /* Enable the PLL, and enable its 100mhz output. */
+ v |= CCM_ANALOG_PLL_ENET_ENABLE;
+ v &= ~CCM_ANALOG_PLL_ENET_BYPASS;
+ WR4(ccm_sc, CCM_ANALOG_PLL_ENET, v);
+
+ v |= CCM_ANALOG_PLL_ENET_ENABLE_100M;
+ WR4(ccm_sc, CCM_ANALOG_PLL_ENET, v);
+
+ return 0;
+}
+
+uint32_t
+imx_ccm_ecspi_hz(void)
+{
+
+ return (60000000);
+}
+
+uint32_t
+imx_ccm_ipg_hz(void)
+{
+
+ return (66000000);
+}
+
+uint32_t
+imx_ccm_perclk_hz(void)
+{
+
+ return (66000000);
+}
+
+uint32_t
+imx_ccm_sdhci_hz(void)
+{
+
+ return (200000000);
+}
+
+uint32_t
+imx_ccm_uart_hz(void)
+{
+
+ return (80000000);
+}
+
+uint32_t
+imx_ccm_ahb_hz(void)
+{
+ return (132000000);
+}
+
+void
+imx_ccm_ipu_enable(int ipu)
+{
+ struct ccm_softc *sc;
+ uint32_t reg;
+
+ sc = ccm_sc;
+ reg = RD4(sc, CCM_CCGR3);
+ if (ipu == 1)
+ reg |= CCGR3_IPU1_IPU | CCGR3_IPU1_DI0;
+ else
+ reg |= CCGR3_IPU2_IPU | CCGR3_IPU2_DI0;
+ WR4(sc, CCM_CCGR3, reg);
+}
+
+void
+imx_ccm_hdmi_enable(void)
+{
+ struct ccm_softc *sc;
+ uint32_t reg;
+
+ sc = ccm_sc;
+ reg = RD4(sc, CCM_CCGR2);
+ reg |= CCGR2_HDMI_TX | CCGR2_HDMI_TX_ISFR;
+ WR4(sc, CCM_CCGR2, reg);
+
+ /* Set HDMI clock to 280MHz */
+ reg = RD4(sc, CCM_CHSCCDR);
+ reg &= ~(CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK |
+ CHSCCDR_IPU1_DI0_PODF_MASK | CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
+ reg |= (CHSCCDR_PODF_DIVIDE_BY_3 << CHSCCDR_IPU1_DI0_PODF_SHIFT);
+ reg |= (CHSCCDR_IPU_PRE_CLK_540M_PFD << CHSCCDR_IPU1_DI0_PRE_CLK_SEL_SHIFT);
+ WR4(sc, CCM_CHSCCDR, reg);
+ reg |= (CHSCCDR_CLK_SEL_LDB_DI0 << CHSCCDR_IPU1_DI0_CLK_SEL_SHIFT);
+ WR4(sc, CCM_CHSCCDR, reg);
+}
+
+uint32_t
+imx_ccm_get_cacrr(void)
+{
+
+ return (RD4(ccm_sc, CCM_CACCR));
+}
+
+void
+imx_ccm_set_cacrr(uint32_t divisor)
+{
+
+ WR4(ccm_sc, CCM_CACCR, divisor);
+}
+
+static device_method_t ccm_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, ccm_probe),
+ DEVMETHOD(device_attach, ccm_attach),
+ DEVMETHOD(device_detach, ccm_detach),
+
+ DEVMETHOD_END
+};
+
+static driver_t ccm_driver = {
+ "ccm",
+ ccm_methods,
+ sizeof(struct ccm_softc)
+};
+
+static devclass_t ccm_devclass;
+
+EARLY_DRIVER_MODULE(ccm, simplebus, ccm_driver, ccm_devclass, 0, 0,
+ BUS_PASS_CPU + BUS_PASS_ORDER_EARLY);
+
diff --git a/freebsd/sys/arm/freescale/imx/imx6_ccmreg.h b/freebsd/sys/arm/freescale/imx/imx6_ccmreg.h
new file mode 100644
index 0000000..69e028d
--- /dev/null
+++ b/freebsd/sys/arm/freescale/imx/imx6_ccmreg.h
@@ -0,0 +1,149 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2013 Ian Lepore <ian at 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 IMX6_CCMREG_H
+#define IMX6_CCMREG_H
+
+#define CCM_CACCR 0x010
+#define CCM_CBCDR 0x014
+#define CBCDR_MMDC_CH1_AXI_PODF_SHIFT 3
+#define CBCDR_MMDC_CH1_AXI_PODF_MASK (7 << 3)
+#define CCM_CSCMR1 0x01C
+#define SSI1_CLK_SEL_S 10
+#define SSI2_CLK_SEL_S 12
+#define SSI3_CLK_SEL_S 14
+#define SSI_CLK_SEL_M 0x3
+#define SSI_CLK_SEL_508_PFD 0
+#define SSI_CLK_SEL_454_PFD 1
+#define SSI_CLK_SEL_PLL4 2
+#define CCM_CSCMR2 0x020
+#define CSCMR2_LDB_DI0_IPU_DIV_SHIFT 10
+#define CCM_CS1CDR 0x028
+#define SSI1_CLK_PODF_SHIFT 0
+#define SSI1_CLK_PRED_SHIFT 6
+#define SSI3_CLK_PODF_SHIFT 16
+#define SSI3_CLK_PRED_SHIFT 22
+#define SSI_CLK_PODF_MASK 0x3f
+#define SSI_CLK_PRED_MASK 0x7
+#define CCM_CS2CDR 0x02C
+#define SSI2_CLK_PODF_SHIFT 0
+#define SSI2_CLK_PRED_SHIFT 6
+#define LDB_DI0_CLK_SEL_SHIFT 9
+#define LDB_DI0_CLK_SEL_MASK (3 << LDB_DI0_CLK_SEL_SHIFT)
+#define CCM_CHSCCDR 0x034
+#define CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK (0x7 << 6)
+#define CHSCCDR_IPU1_DI0_PRE_CLK_SEL_SHIFT 6
+#define CHSCCDR_IPU1_DI0_PODF_MASK (0x7 << 3)
+#define CHSCCDR_IPU1_DI0_PODF_SHIFT 3
+#define CHSCCDR_IPU1_DI0_CLK_SEL_MASK (0x7)
+#define CHSCCDR_IPU1_DI0_CLK_SEL_SHIFT 0
+#define CHSCCDR_CLK_SEL_LDB_DI0 3
+#define CHSCCDR_PODF_DIVIDE_BY_3 2
+#define CHSCCDR_IPU_PRE_CLK_540M_PFD 5
+#define CCM_CSCDR2 0x038
+#define CCM_CLPCR 0x054
+#define CCM_CLPCR_LPM_MASK 0x03
+#define CCM_CLPCR_LPM_RUN 0x00
+#define CCM_CLPCR_LPM_WAIT 0x01
+#define CCM_CLPCR_LPM_STOP 0x02
+#define CCM_CGPR 0x064
+#define CCM_CGPR_INT_MEM_CLK_LPM (1 << 17)
+#define CCM_CCGR0 0x068
+#define CCGR0_AIPS_TZ1 (0x3 << 0)
+#define CCGR0_AIPS_TZ2 (0x3 << 2)
+#define CCGR0_ABPHDMA (0x3 << 4)
+#define CCM_CCGR1 0x06C
+#define CCGR1_ECSPI1 (0x3 << 0)
+#define CCGR1_ECSPI2 (0x3 << 2)
+#define CCGR1_ECSPI3 (0x3 << 4)
+#define CCGR1_ECSPI4 (0x3 << 6)
+#define CCGR1_ECSPI5 (0x3 << 8)
+#define CCGR1_ENET (0x3 << 10)
+#define CCGR1_EPIT1 (0x3 << 12)
+#define CCGR1_EPIT2 (0x3 << 14)
+#define CCGR1_ESAI (0x3 << 16)
+#define CCGR1_GPT (0x3 << 20)
+#define CCGR1_GPT_SERIAL (0x3 << 22)
+#define CCM_CCGR2 0x070
+#define CCGR2_HDMI_TX (0x3 << 0)
+#define CCGR2_HDMI_TX_ISFR (0x3 << 4)
+#define CCGR2_I2C1 (0x3 << 6)
+#define CCGR2_I2C2 (0x3 << 8)
+#define CCGR2_I2C3 (0x3 << 10)
+#define CCGR2_IIM (0x3 << 12)
+#define CCGR2_IOMUX_IPT (0x3 << 14)
+#define CCGR2_IPMUX1 (0x3 << 16)
+#define CCGR2_IPMUX2 (0x3 << 18)
+#define CCGR2_IPMUX3 (0x3 << 20)
+#define CCGR2_IPSYNC_IP2APB_TZASC1 (0x3 << 22)
+#define CCGR2_IPSYNC_IP2APB_TZASC2 (0x3 << 24)
+#define CCGR2_IPSYNC_VDOA (0x3 << 26)
+#define CCM_CCGR3 0x074
+#define CCGR3_IPU1_IPU (0x3 << 0)
+#define CCGR3_IPU1_DI0 (0x3 << 2)
+#define CCGR3_IPU1_DI1 (0x3 << 4)
+#define CCGR3_IPU2_IPU (0x3 << 6)
+#define CCGR3_IPU2_DI0 (0x3 << 8)
+#define CCGR3_IPU2_DI1 (0x3 << 10)
+#define CCGR3_LDB_DI0 (0x3 << 12)
+#define CCGR3_LDB_DI1 (0x3 << 14)
+#define CCGR3_MMDC_CORE_ACLK_FAST (0x3 << 20)
+#define CCGR3_CG11 (0x3 << 22)
+#define CCGR3_MMDC_CORE_IPG (0x3 << 24)
+#define CCGR3_CG13 (0x3 << 26)
+#define CCGR3_OCRAM (0x3 << 28)
+#define CCM_CCGR4 0x078
+#define CCGR4_PL301_MX6QFAST1_S133 (0x3 << 8)
+#define CCGR4_PL301_MX6QPER1_BCH (0x3 << 12)
+#define CCGR4_PL301_MX6QPER2_MAIN (0x3 << 14)
+#define CCM_CCGR5 0x07C
+#define CCGR5_SATA (0x3 << 4)
+#define CCGR5_SDMA (0x3 << 6)
+#define CCGR5_SSI1 (0x3 << 18)
+#define CCGR5_SSI2 (0x3 << 20)
+#define CCGR5_SSI3 (0x3 << 22)
+#define CCGR5_UART (0x3 << 24)
+#define CCGR5_UART_SERIAL (0x3 << 26)
+#define CCM_CCGR6 0x080
+#define CCGR6_USBOH3 (0x3 << 0)
+#define CCGR6_USDHC1 (0x3 << 2)
+#define CCGR6_USDHC2 (0x3 << 4)
+#define CCGR6_USDHC3 (0x3 << 6)
+#define CCGR6_USDHC4 (0x3 << 8)
+#define CCM_CMEOR 0x088
+
+#define CCM_ANALOG_PLL_ENET 0x000040e0
+#define CCM_ANALOG_PLL_ENET_LOCK (1u << 31)
+#define CCM_ANALOG_PLL_ENET_ENABLE_100M (1u << 20) /* SATA */
+#define CCM_ANALOG_PLL_ENET_BYPASS (1u << 16)
+#define CCM_ANALOG_PLL_ENET_ENABLE (1u << 13) /* Ether */
+#define CCM_ANALOG_PLL_ENET_POWERDOWN (1u << 12)
+
+#endif
diff --git a/freebsd/sys/arm/freescale/imx/imx6_machdep.h b/freebsd/sys/arm/freescale/imx/imx6_machdep.h
new file mode 100644
index 0000000..4db1bb3
--- /dev/null
+++ b/freebsd/sys/arm/freescale/imx/imx6_machdep.h
@@ -0,0 +1,38 @@
+/*-
+ * Copyright (c) 2017 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef IMX6_MACHDEP_H
+#define IMX6_MACHDEP_H
+
+struct pl310_softc;
+
+void imx6_mp_start_ap(platform_t);
+void imx6_mp_setmaxid(platform_t);
+void imx6_pl310_init(platform_t, struct pl310_softc *);
+
+#endif /* IMX6_MACHDEP_H */
diff --git a/freebsd/sys/arm/freescale/imx/imx_machdep.h b/freebsd/sys/arm/freescale/imx/imx_machdep.h
new file mode 100644
index 0000000..0717246
--- /dev/null
+++ b/freebsd/sys/arm/freescale/imx/imx_machdep.h
@@ -0,0 +1,72 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2013 Ian Lepore <ian at 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 IMX_MACHDEP_H
+#define IMX_MACHDEP_H
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+SYSCTL_DECL(_hw_imx);
+
+/* Common functions, implemented in imx_machdep.c. */
+
+void imx_wdog_cpu_reset(vm_offset_t _wdcr_phys) __attribute__((__noreturn__));
+void imx_wdog_init_last_reset(vm_offset_t _wdsr_phys);
+
+/* From here down, routines are implemented in imxNN_machdep.c. */
+
+/*
+ * SoC identity.
+ * According to the documentation, there is such a thing as an i.MX6 Dual
+ * (non-lite flavor). However, Freescale doesn't seem to have assigned it a
+ * number in their code for determining the SoC type in u-boot.
+ *
+ * To-do: put silicon revision numbers into the low-order bits somewhere.
+ */
+#define IMXSOC_51 0x51000000
+#define IMXSOC_53 0x53000000
+#define IMXSOC_6SL 0x60000000
+#define IMXSOC_6DL 0x61000000
+#define IMXSOC_6S 0x62000000
+#define IMXSOC_6Q 0x63000000
+#define IMXSOC_6UL 0x64000000
+#define IMXSOC_FAMSHIFT 28
+
+u_int imx_soc_type(void);
+
+static inline u_int
+imx_soc_family(void)
+{
+ return (imx_soc_type() >> IMXSOC_FAMSHIFT);
+}
+
+#endif
+
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