108117cc22
OF_finddevices returns ((phandle_t)-1) in case of failure. Some code in existing drivers checked return value to be equal to 0 or less/equal to 0 which is also wrong because phandle_t is unsigned type. Most of these checks were for negative cases that were never triggered so trhere was no impact on functionality. Reviewed by: nwhitehorn MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D14645
89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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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#include "opt_platform.h"
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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/devmap.h>
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#include <vm/vm.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/bus.h>
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#include <machine/fdt.h>
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#include <machine/platform.h>
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#include <machine/platformvar.h>
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#include <arm/freescale/vybrid/vf_src.h>
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#include "platform_if.h"
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static int
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vf_devmap_init(platform_t plat)
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{
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devmap_add_entry(0x40000000, 0x100000);
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return (0);
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}
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static void
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vf_cpu_reset(platform_t plat)
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{
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phandle_t src;
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uint32_t paddr;
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bus_addr_t vaddr;
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if (src_swreset() == 0)
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goto end;
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src = OF_finddevice("src");
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if ((src != -1) && (OF_getencprop(src, "reg", &paddr, sizeof(paddr))) > 0) {
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if (bus_space_map(fdtbus_bs_tag, paddr, 0x10, 0, &vaddr) == 0) {
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bus_space_write_4(fdtbus_bs_tag, vaddr, 0x00, SW_RST);
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}
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}
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end:
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while (1);
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}
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static platform_method_t vf_methods[] = {
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PLATFORMMETHOD(platform_devmap_init, vf_devmap_init),
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PLATFORMMETHOD(platform_cpu_reset, vf_cpu_reset),
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PLATFORMMETHOD_END,
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};
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FDT_PLATFORM_DEF(vf, "vybrid", 0, "freescale,vybrid", 200);
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