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("$FreeBSD$");
   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         physmem = realmem;
  101 
  102         init_param1();
  103         init_param2(physmem);
  104         mips_cpu_init();
  105         pmap_bootstrap();
  106         mips_proc0_init();
  107         mutex_init();
  108 
  109         kdb_init();
  110 #ifdef KDB
  111         if (boothowto & RB_KDB)
  112                 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
  113 #endif
  114 }
  115 
  116 void
  117 platform_halt(void)
  118 {
  119 
  120 }
  121 
  122 
  123 void
  124 platform_identify(void)
  125 {
  126 
  127 }
  128 
  129 void
  130 platform_reset(void)
  131 {
  132 
  133         __asm __volatile("li    $25, 0xbfc00000");
  134         __asm __volatile("j     $25");
  135 }
  136 
  137 void
  138 platform_trap_enter(void)
  139 {
  140 
  141 }
  142 
  143 void
  144 platform_trap_exit(void)
  145 {
  146 
  147 }
  148 
  149 void
  150 platform_start(__register_t a0 __unused, __register_t a1 __unused, 
  151     __register_t a2 __unused, __register_t a3 __unused)
  152 {
  153         vm_offset_t kernend;
  154         uint64_t platform_counter_freq = 175 * 1000 * 1000;
  155 
  156         /* clear the BSS and SBSS segments */
  157         kernend = (vm_offset_t)&end;
  158         memset(&edata, 0, kernend - (vm_offset_t)(&edata));
  159 
  160         mips_postboot_fixup();
  161 
  162         /* Initialize pcpu stuff */
  163         mips_pcpu0_init();
  164 
  165         cninit();
  166         mips_init();
  167         /* Set counter_freq for tick_init_params() */
  168         platform_counter_freq = 175 * 1000 * 1000;
  169 
  170         mips_timer_init_params(platform_counter_freq, 0);
  171 }

Cache object: a17a9b6934041bbadf5867037a3bc119


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