The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/versatile/versatile_machdep.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-4-Clause
    3  *
    4  * Copyright (c) 2012 Oleksandr Tymoshenko.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software written for Brini by Mark Brinicombe
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed by Brini.
   20  * 4. The name of the company nor the name of the author may be used to
   21  *    endorse or promote products derived from this software without specific
   22  *    prior written permission.
   23  *
   24  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
   25  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   27  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   28  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   29  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   30  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   34  * SUCH DAMAGE.
   35  *
   36  */
   37 
   38 #include "opt_ddb.h"
   39 #include "opt_platform.h"
   40 
   41 #include <sys/cdefs.h>
   42 __FBSDID("$FreeBSD: releng/12.0/sys/arm/versatile/versatile_machdep.c 326258 2017-11-27 15:04:10Z pfg $");
   43 
   44 #include <sys/param.h>
   45 #include <sys/systm.h>
   46 #include <sys/bus.h>
   47 #include <sys/devmap.h>
   48 
   49 #include <vm/vm.h>
   50 #include <vm/pmap.h>
   51 
   52 #include <machine/bus.h>
   53 #include <machine/machdep.h>
   54 #include <machine/platform.h>
   55 #include <machine/platformvar.h>
   56 
   57 #include "platform_if.h"
   58 
   59 /* Start of address space used for bootstrap map */
   60 #define DEVMAP_BOOTSTRAP_MAP_START      0xE0000000
   61 
   62 static vm_offset_t
   63 versatile_lastaddr(platform_t plat)
   64 {
   65 
   66         return (DEVMAP_BOOTSTRAP_MAP_START);
   67 }
   68 
   69 #define FDT_DEVMAP_MAX  (2)             /* FIXME */
   70 static struct devmap_entry fdt_devmap[FDT_DEVMAP_MAX] = {
   71         { 0, 0, 0, },
   72         { 0, 0, 0, }
   73 };
   74 
   75 
   76 /*
   77  * Construct devmap table with DT-derived config data.
   78  */
   79 static int
   80 versatile_devmap_init(platform_t plat)
   81 {
   82         int i = 0;
   83         fdt_devmap[i].pd_va = 0xf0100000;
   84         fdt_devmap[i].pd_pa = 0x10100000;
   85         fdt_devmap[i].pd_size = 0x01000000;       /* 1 MB */
   86 
   87         devmap_register_table(&fdt_devmap[0]);
   88         return (0);
   89 }
   90 
   91 static void
   92 versatile_cpu_reset(platform_t plat)
   93 {
   94         printf("cpu_reset\n");
   95         while (1);
   96 }
   97 
   98 static platform_method_t versatile_methods[] = {
   99         PLATFORMMETHOD(platform_lastaddr,       versatile_lastaddr),
  100         PLATFORMMETHOD(platform_devmap_init,    versatile_devmap_init),
  101         PLATFORMMETHOD(platform_cpu_reset,      versatile_cpu_reset),
  102 
  103         PLATFORMMETHOD_END,
  104 };
  105 FDT_PLATFORM_DEF(versatile, "versatile", 0, "arm,versatile-pb", 1);

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