b53efb78fa
Memory Interface (CFI). The flash memory can be read and written to through /dev/cfi# and an ioctl() exists so processes can read the query information. The driver supports the AMD and Intel command set, though only the AMD command has been tested. Obtained from: Juniper Networks, Inc.
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/*-
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* Copyright (c) 2007, Juniper Networks, Inc.
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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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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#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/conf.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/sysctl.h>
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#include <machine/bus.h>
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#include <dev/cfi/cfi_var.h>
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#include <powerpc/mpc85xx/lbc.h>
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static int cfi_lbc_probe(device_t);
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static device_method_t cfi_lbc_methods[] = {
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/* device interface */
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DEVMETHOD(device_probe, cfi_lbc_probe),
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DEVMETHOD(device_attach, cfi_attach),
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DEVMETHOD(device_detach, cfi_detach),
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{0, 0}
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};
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static driver_t cfi_lbc_driver = {
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cfi_driver_name,
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cfi_lbc_methods,
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sizeof(struct cfi_softc),
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};
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DRIVER_MODULE (cfi, lbc, cfi_lbc_driver, cfi_devclass, 0, 0);
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static int
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cfi_lbc_probe(device_t dev)
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{
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uintptr_t devtype;
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int error;
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error = BUS_READ_IVAR(device_get_parent(dev), dev, LBC_IVAR_DEVTYPE,
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&devtype);
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if (error)
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return (error);
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if (devtype != LBC_DEVTYPE_CFI)
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return (EINVAL);
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return (cfi_probe(dev));
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}
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