5c263f43ef
ARM Cortex-A5/M4 SoC (M4 core is not used in this work). Support includes device drivers for: - NAND Flash Controller (NFC) - USB Enhanced Host Controller Interface (EHCI) - General-Purpose Input/Output (GPIO) - Universal Asynchronous Receiver/Transmitter (UART) Also supported: - Generic Interrupt Controller (GIC) - MPCore timer - ffec ethernet driver Reviewed by: ray Approved by: cognet (mentor)
148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
/*-
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* Copyright (c) 2013 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Vybrid Family System Reset Controller (SRC)
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* Chapter 18, Vybrid Reference Manual, Rev. 5, 07/2013
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <sys/timeet.h>
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#include <sys/timetc.h>
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#include <sys/watchdog.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <machine/bus.h>
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#include <machine/fdt.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include <arm/freescale/vybrid/vf_src.h>
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#include <arm/freescale/vybrid/vf_common.h>
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#define SRC_SCR 0x00 /* SRC Control Register */
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#define SRC_SBMR1 0x04 /* SRC Boot Mode Register 1 */
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#define SRC_SRSR 0x08 /* SRC Status Register */
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#define SRC_SECR 0x0C /* SRC_SECR */
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#define SRC_SICR 0x14 /* SRC Reset Interrupt Configuration Register */
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#define SRC_SIMR 0x18 /* SRC Interrupt Masking Register */
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#define SRC_SBMR2 0x1C /* SRC Boot Mode Register 2 */
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#define SRC_GPR0 0x20 /* General Purpose Register */
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#define SRC_GPR1 0x24 /* General Purpose Register */
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#define SRC_GPR2 0x28 /* General Purpose Register */
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#define SRC_GPR3 0x2C /* General Purpose Register */
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#define SRC_GPR4 0x30 /* General Purpose Register */
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#define SRC_MISC0 0x4C /* MISC0 */
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#define SRC_MISC1 0x50 /* MISC1 */
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#define SRC_MISC2 0x54 /* MISC2 */
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#define SRC_MISC3 0x58 /* MISC3 */
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struct src_softc {
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struct resource *res[1];
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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};
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struct src_softc *src_sc;
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static struct resource_spec src_spec[] = {
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{ SYS_RES_MEMORY, 0, RF_ACTIVE },
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{ -1, 0 }
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};
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int
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src_swreset(void)
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{
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if (src_sc == NULL)
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return (1);
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WRITE4(src_sc, SRC_SCR, SW_RST);
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return (0);
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}
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static int
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src_probe(device_t dev)
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{
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if (!ofw_bus_is_compatible(dev, "fsl,mvf600-src"))
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return (ENXIO);
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device_set_desc(dev, "Vybrid Family System Reset Controller");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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src_attach(device_t dev)
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{
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struct src_softc *sc;
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sc = device_get_softc(dev);
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if (bus_alloc_resources(dev, src_spec, sc->res)) {
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device_printf(dev, "could not allocate resources\n");
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return (ENXIO);
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}
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/* Memory interface */
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sc->bst = rman_get_bustag(sc->res[0]);
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sc->bsh = rman_get_bushandle(sc->res[0]);
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src_sc = sc;
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return (0);
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}
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static device_method_t src_methods[] = {
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DEVMETHOD(device_probe, src_probe),
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DEVMETHOD(device_attach, src_attach),
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{ 0, 0 }
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};
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static driver_t src_driver = {
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"src",
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src_methods,
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sizeof(struct src_softc),
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};
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static devclass_t src_devclass;
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DRIVER_MODULE(src, simplebus, src_driver, src_devclass, 0, 0);
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