27521ff8e4
platform code, it is expected these will be merged in the future when the ARM code is more complete. Until more boards can be tested only use this with the Raspberry Pi and rrename the functions on the other SoCs. Reviewed by: ian@
135 lines
3.7 KiB
C
135 lines
3.7 KiB
C
/*-
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* Copyright (c) 2012 Oleksandr Tymoshenko.
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* Copyright (c) 1994-1998 Mark Brinicombe.
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* Copyright (c) 1994 Brini.
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* All rights reserved.
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*
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* This code is derived from software written for Brini by Mark Brinicombe
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Brini.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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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* from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
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*/
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#include "opt_ddb.h"
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#include "opt_platform.h"
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#include "opt_global.h"
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#define _ARM32_BUS_DMA_PRIVATE
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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 <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/bus.h>
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#include <machine/devmap.h>
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#include <machine/machdep.h>
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#include <machine/platform.h>
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#include <machine/platformvar.h>
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#include <dev/fdt/fdt_common.h>
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#include <arm/broadcom/bcm2835/bcm2835_wdog.h>
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#include "platform_if.h"
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static vm_offset_t
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bcm2835_lastaddr(platform_t plat)
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{
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return (arm_devmap_lastaddr());
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}
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static void
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bcm2835_late_init(platform_t plat)
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{
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phandle_t system;
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pcell_t cells[2];
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int len;
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system = OF_finddevice("/system");
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if (system != 0) {
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len = OF_getprop(system, "linux,serial", &cells, sizeof(cells));
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if (len > 0)
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board_set_serial(fdt64_to_cpu(*((uint64_t *)cells)));
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len = OF_getprop(system, "linux,revision", &cells, sizeof(cells));
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if (len > 0)
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board_set_revision(fdt32_to_cpu(*((uint32_t *)cells)));
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}
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}
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/*
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* Set up static device mappings.
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* All on-chip peripherals exist in a 16MB range starting at 0x20000000.
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* Map the entire range using 1MB section mappings.
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*/
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static int
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bcm2835_devmap_init(platform_t plat)
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{
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arm_devmap_add_entry(0x20000000, 0x01000000);
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return (0);
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}
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struct arm32_dma_range *
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bus_dma_get_range(void)
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{
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return (NULL);
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}
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int
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bus_dma_get_range_nb(void)
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{
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return (0);
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}
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void
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cpu_reset()
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{
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bcmwd_watchdog_reset();
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while (1);
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}
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static platform_method_t bcm2835_methods[] = {
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PLATFORMMETHOD(platform_devmap_init, bcm2835_devmap_init),
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PLATFORMMETHOD(platform_lastaddr, bcm2835_lastaddr),
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PLATFORMMETHOD(platform_late_init, bcm2835_late_init),
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PLATFORMMETHOD_END,
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};
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FDT_PLATFORM_DEF(bcm2835, "bcm2835", 0, "raspberrypi,model-b");
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