e00251b7ed
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
/*-
|
|
* Copyright (c) 2007, Juniper Networks, Inc.
|
|
* 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.
|
|
* 3. Neither the name of the author nor the names of any co-contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/cfi/cfi_var.h>
|
|
|
|
#include <powerpc/mpc85xx/lbc.h>
|
|
|
|
static int cfi_lbc_probe(device_t);
|
|
|
|
static device_method_t cfi_lbc_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, cfi_lbc_probe),
|
|
DEVMETHOD(device_attach, cfi_attach),
|
|
DEVMETHOD(device_detach, cfi_detach),
|
|
|
|
{0, 0}
|
|
};
|
|
|
|
static driver_t cfi_lbc_driver = {
|
|
cfi_driver_name,
|
|
cfi_lbc_methods,
|
|
sizeof(struct cfi_softc),
|
|
};
|
|
|
|
DRIVER_MODULE (cfi, lbc, cfi_lbc_driver, cfi_devclass, 0, 0);
|
|
|
|
static int
|
|
cfi_lbc_probe(device_t dev)
|
|
{
|
|
uintptr_t devtype;
|
|
int error;
|
|
|
|
error = BUS_READ_IVAR(device_get_parent(dev), dev, LBC_IVAR_DEVTYPE,
|
|
&devtype);
|
|
if (error)
|
|
return (error);
|
|
|
|
if (devtype != LBC_DEVTYPE_CFI)
|
|
return (EINVAL);
|
|
|
|
return (cfi_probe(dev));
|
|
}
|