f68f01fa5f
This allows multiple instances of SoCs that use the pl310 driver to be built within the same kernel: * Add access to the platform_t object from outside platform.c * Use this with the pl310 driver There is a new platform_pl310 interface to replace the existing code. SoCs need to implement the init method, and if they have special requirements to write to the two registers we care about will also need to implement the write_ctrl and write_debug methods. Differential Revision: https://reviews.freebsd.org/D11546
103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
/*-
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* Copyright (c) 2013 Thomas Skibo
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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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/*
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* Machine dependent code for Xilinx Zynq-7000 Soc.
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*
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* Reference: Zynq-7000 All Programmable SoC Technical Reference Manual.
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* (v1.4) November 16, 2012. Xilinx doc UG585.
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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/bus.h>
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#include <sys/devmap.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/machdep.h>
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#include <machine/platform.h>
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#include <machine/platformvar.h>
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#include <arm/xilinx/zy7_machdep.h>
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#include <arm/xilinx/zy7_reg.h>
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#include "platform_if.h"
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#include "platform_pl310_if.h"
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void (*zynq7_cpu_reset)(void);
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/*
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* Set up static device mappings. Not strictly necessary -- simplebus will
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* dynamically establish mappings as needed -- but doing it this way gets us
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* nice efficient 1MB section mappings.
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*/
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static int
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zynq7_devmap_init(platform_t plat)
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{
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devmap_add_entry(ZYNQ7_PSIO_HWBASE, ZYNQ7_PSIO_SIZE);
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devmap_add_entry(ZYNQ7_PSCTL_HWBASE, ZYNQ7_PSCTL_SIZE);
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return (0);
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}
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static void
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zynq7_do_cpu_reset(platform_t plat)
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{
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if (zynq7_cpu_reset != NULL)
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(*zynq7_cpu_reset)();
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printf("cpu_reset: no platform cpu_reset. hanging.\n");
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for (;;)
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;
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}
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static platform_method_t zynq7_methods[] = {
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PLATFORMMETHOD(platform_devmap_init, zynq7_devmap_init),
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PLATFORMMETHOD(platform_cpu_reset, zynq7_do_cpu_reset),
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#ifdef SMP
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PLATFORMMETHOD(platform_mp_setmaxid, zynq7_mp_setmaxid),
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PLATFORMMETHOD(platform_mp_start_ap, zynq7_mp_start_ap),
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#endif
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PLATFORMMETHOD(platform_pl310_init, zynq7_pl310_init),
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PLATFORMMETHOD_END,
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};
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FDT_PLATFORM_DEF(zynq7, "zynq7", 0, "xlnx,zynq-7000", 200);
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