af3dc4a7ca
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
154 lines
3.9 KiB
C
154 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2013 Ganbold Tsagaankhuu <ganbold@freebsd.org>
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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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* $FreeBSD$
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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 <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/frame.h>
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#include <machine/intr.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 "a10_sramc.h"
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#define SRAM_CTL1_CFG 0x04
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#define CTL1_CFG_SRAMD_MAP_USB0 (1 << 0)
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struct a10_sramc_softc {
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struct resource *res;
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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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static struct a10_sramc_softc *a10_sramc_sc;
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#define sramc_read_4(sc, reg) \
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bus_space_read_4((sc)->bst, (sc)->bsh, (reg))
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#define sramc_write_4(sc, reg, val) \
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bus_space_write_4((sc)->bst, (sc)->bsh, (reg), (val))
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static int
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a10_sramc_probe(device_t dev)
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{
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if (ofw_bus_is_compatible(dev, "allwinner,sun4i-a10-sram-controller")) {
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device_set_desc(dev, "Allwinner sramc module");
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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static int
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a10_sramc_attach(device_t dev)
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{
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struct a10_sramc_softc *sc = device_get_softc(dev);
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int rid = 0;
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sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
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if (!sc->res) {
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device_printf(dev, "could not allocate resource\n");
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return (ENXIO);
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}
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sc->bst = rman_get_bustag(sc->res);
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sc->bsh = rman_get_bushandle(sc->res);
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a10_sramc_sc = sc;
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return (0);
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}
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static device_method_t a10_sramc_methods[] = {
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DEVMETHOD(device_probe, a10_sramc_probe),
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DEVMETHOD(device_attach, a10_sramc_attach),
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{ 0, 0 }
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};
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static driver_t a10_sramc_driver = {
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"a10_sramc",
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a10_sramc_methods,
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sizeof(struct a10_sramc_softc),
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};
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static devclass_t a10_sramc_devclass;
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EARLY_DRIVER_MODULE(a10_sramc, simplebus, a10_sramc_driver, a10_sramc_devclass,
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0, 0, BUS_PASS_RESOURCE + BUS_PASS_ORDER_EARLY);
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int
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a10_map_to_emac(void)
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{
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struct a10_sramc_softc *sc = a10_sramc_sc;
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uint32_t reg_value;
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if (sc == NULL)
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return (ENXIO);
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/* Map SRAM to EMAC, set bit 2 and 4. */
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reg_value = sramc_read_4(sc, SRAM_CTL1_CFG);
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reg_value |= 0x5 << 2;
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sramc_write_4(sc, SRAM_CTL1_CFG, reg_value);
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return (0);
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}
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int
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a10_map_to_otg(void)
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{
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struct a10_sramc_softc *sc = a10_sramc_sc;
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uint32_t reg_value;
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if (sc == NULL)
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return (ENXIO);
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/* Map SRAM to OTG */
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reg_value = sramc_read_4(sc, SRAM_CTL1_CFG);
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reg_value |= CTL1_CFG_SRAMD_MAP_USB0;
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sramc_write_4(sc, SRAM_CTL1_CFG, reg_value);
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return (0);
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}
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