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/mips/alchemy/alchemy_machdep.c

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    1 /*-
    2  * Copyright (C) 2007 by Oleksandr Tymoshenko. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   16  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
   17  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   18  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   19  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   21  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
   22  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   23  * THE POSSIBILITY OF SUCH DAMAGE.
   24  *
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/10.1/sys/mips/alchemy/alchemy_machdep.c 247297 2013-02-26 01:00:11Z attilio $");
   29 
   30 #include "opt_ddb.h"
   31 
   32 #include <sys/param.h>
   33 #include <sys/conf.h>
   34 #include <sys/kernel.h>
   35 #include <sys/systm.h>
   36 #include <sys/imgact.h>
   37 #include <sys/bio.h>
   38 #include <sys/buf.h>
   39 #include <sys/bus.h>
   40 #include <sys/cpu.h>
   41 #include <sys/cons.h>
   42 #include <sys/exec.h>
   43 #include <sys/ucontext.h>
   44 #include <sys/proc.h>
   45 #include <sys/kdb.h>
   46 #include <sys/ptrace.h>
   47 #include <sys/reboot.h>
   48 #include <sys/signalvar.h>
   49 #include <sys/sysent.h>
   50 #include <sys/sysproto.h>
   51 #include <sys/user.h>
   52 
   53 #include <vm/vm.h>
   54 #include <vm/vm_object.h>
   55 #include <vm/vm_page.h>
   56 
   57 #include <machine/cache.h>
   58 #include <machine/clock.h>
   59 #include <machine/cpu.h>
   60 #include <machine/cpuinfo.h>
   61 #include <machine/cpufunc.h>
   62 #include <machine/cpuregs.h>
   63 #include <machine/hwfunc.h>
   64 #include <machine/intr_machdep.h>
   65 #include <machine/locore.h>
   66 #include <machine/md_var.h>
   67 #include <machine/pte.h>
   68 #include <machine/sigframe.h>
   69 #include <machine/trap.h>
   70 #include <machine/vmparam.h>
   71 
   72 extern int      *edata;
   73 extern int      *end;
   74 
   75 void
   76 platform_cpu_init()
   77 {
   78         /* Nothing special */
   79 }
   80 
   81 static void
   82 mips_init(void)
   83 {
   84         int i;
   85 
   86         printf("entry: mips_init()\n");
   87 
   88         bootverbose = 1;
   89         realmem = btoc(16 << 20);
   90 
   91         for (i = 0; i < 10; i++) {
   92                 phys_avail[i] = 0;
   93         }
   94 
   95         /* phys_avail regions are in bytes */
   96         phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
   97         phys_avail[1] = ctob(realmem);
   98 
   99         dump_avail[0] = phys_avail[0];
  100         dump_avail[1] = phys_avail[1];
  101 
  102         physmem = realmem;
  103 
  104         init_param1();
  105         init_param2(physmem);
  106         mips_cpu_init();
  107         pmap_bootstrap();
  108         mips_proc0_init();
  109         mutex_init();
  110 
  111         kdb_init();
  112 #ifdef KDB
  113         if (boothowto & RB_KDB)
  114                 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
  115 #endif
  116 }
  117 
  118 void
  119 platform_reset(void)
  120 {
  121 
  122         __asm __volatile("li    $25, 0xbfc00000");
  123         __asm __volatile("j     $25");
  124 }
  125 
  126 void
  127 platform_start(__register_t a0 __unused, __register_t a1 __unused, 
  128     __register_t a2 __unused, __register_t a3 __unused)
  129 {
  130         vm_offset_t kernend;
  131         uint64_t platform_counter_freq = 175 * 1000 * 1000;
  132 
  133         /* clear the BSS and SBSS segments */
  134         kernend = (vm_offset_t)&end;
  135         memset(&edata, 0, kernend - (vm_offset_t)(&edata));
  136 
  137         mips_postboot_fixup();
  138 
  139         /* Initialize pcpu stuff */
  140         mips_pcpu0_init();
  141 
  142         cninit();
  143         mips_init();
  144         /* Set counter_freq for tick_init_params() */
  145         platform_counter_freq = 175 * 1000 * 1000;
  146 
  147         mips_timer_init_params(platform_counter_freq, 0);
  148 }

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