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/adm5120/adm5120_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: stable/9/sys/mips/adm5120/adm5120_machdep.c 216320 2010-12-09 07:47:40Z gonzo $");
   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 #include <vm/vm_pager.h>
   57 
   58 #include <machine/cache.h>
   59 #include <machine/clock.h>
   60 #include <machine/cpu.h>
   61 #include <machine/cpuinfo.h>
   62 #include <machine/cpufunc.h>
   63 #include <machine/cpuregs.h>
   64 #include <machine/hwfunc.h>
   65 #include <machine/intr_machdep.h>
   66 #include <machine/locore.h>
   67 #include <machine/md_var.h>
   68 #include <machine/pte.h>
   69 #include <machine/sigframe.h>
   70 #include <machine/trap.h>
   71 #include <machine/vmparam.h>
   72 
   73 extern int      *edata;
   74 extern int      *end;
   75 
   76 void
   77 platform_cpu_init()
   78 {
   79         /* Nothing special */
   80 }
   81 
   82 static void
   83 mips_init(void)
   84 {
   85         int i;
   86 
   87         printf("entry: mips_init()\n");
   88 
   89         bootverbose = 1;
   90         realmem = btoc(16 << 20);
   91 
   92         for (i = 0; i < 10; i++) {
   93                 phys_avail[i] = 0;
   94         }
   95 
   96         /* phys_avail regions are in bytes */
   97         phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
   98         phys_avail[1] = ctob(realmem);
   99 
  100         dump_avail[0] = phys_avail[0];
  101         dump_avail[1] = phys_avail[1];
  102 
  103         physmem = realmem;
  104 
  105         init_param1();
  106         init_param2(physmem);
  107         mips_cpu_init();
  108         pmap_bootstrap();
  109         mips_proc0_init();
  110         mutex_init();
  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_halt(void)
  120 {
  121 
  122 }
  123 
  124 
  125 void
  126 platform_identify(void)
  127 {
  128 
  129 }
  130 
  131 void
  132 platform_reset(void)
  133 {
  134 
  135         __asm __volatile("li    $25, 0xbfc00000");
  136         __asm __volatile("j     $25");
  137 }
  138 
  139 void
  140 platform_trap_enter(void)
  141 {
  142 
  143 }
  144 
  145 void
  146 platform_trap_exit(void)
  147 {
  148 
  149 }
  150 
  151 void
  152 platform_start(__register_t a0 __unused, __register_t a1 __unused, 
  153     __register_t a2 __unused, __register_t a3 __unused)
  154 {
  155         vm_offset_t kernend;
  156         uint64_t platform_counter_freq = 175 * 1000 * 1000;
  157 
  158         /* clear the BSS and SBSS segments */
  159         kernend = (vm_offset_t)&end;
  160         memset(&edata, 0, kernend - (vm_offset_t)(&edata));
  161 
  162         mips_postboot_fixup();
  163 
  164         /* Initialize pcpu stuff */
  165         mips_pcpu0_init();
  166 
  167         cninit();
  168         mips_init();
  169         mips_timer_init_params(platform_counter_freq, 0);
  170 }

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