osfmk/ppc/ppc_init.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28
  29 #include <debug.h>
  30 #include <mach_ldebug.h>
  31 #include <mach_kdb.h>
  32 #include <mach_kdp.h>
  33
  34 #include <kern/misc_protos.h>
  35 #include <kern/thread.h>
  36 #include <kern/processor.h>
  37 #include <machine/machine_routines.h>
  38 #include <ppc/boot.h>
  39 #include <ppc/proc_reg.h>
  40 #include <ppc/misc_protos.h>
  41 #include <ppc/pmap.h>
  42 #include <ppc/new_screen.h>
  43 #include <ppc/exception.h>
  44 #include <ppc/Firmware.h>
  45 #include <ppc/savearea.h>
  46 #include <ppc/low_trace.h>
  47 #include <ppc/Diagnostics.h>
  48 #include <ppc/mem.h>
  49 #include <ppc/mappings.h>
  50
  51 #include <pexpert/pexpert.h>
  52
  53 extern unsigned int intstack_top_ss;    /* declared in start.s */
  54 extern unsigned int debstackptr;                /* declared in start.s */
  55 extern unsigned int debstack_top_ss;    /* declared in start.s */
  56
  57 int pc_trace_buf[1024] = {0};
  58 int pc_trace_cnt = 1024;
  59
  60 extern unsigned int extPatchMCK;
  61 extern unsigned int extPatch32;
  62 extern unsigned int hwulckPatch_isync;
  63 extern unsigned int hwulckPatch_eieio;
  64 extern unsigned int hwulckbPatch_isync;
  65 extern unsigned int hwulckbPatch_eieio;
  66 extern unsigned int mulckPatch_isync;
  67 extern unsigned int mulckPatch_eieio;
  68 extern unsigned int sulckPatch_isync;
  69 extern unsigned int sulckPatch_eieio;
  70 extern unsigned int retfsectPatch_eieio;
  71 extern unsigned int retfsectPatch_isync;
  72
  73 int forcenap = 0;
  74
  75 patch_entry_t patch_table[PATCH_TABLE_SIZE] = {
  76         &extPatch32,                    0x60000000, PATCH_FEATURE,              PatchExt32,
  77         &extPatchMCK,                   0x60000000, PATCH_PROCESSOR,    CPU_SUBTYPE_POWERPC_970,
  78         &hwulckPatch_isync,             0x60000000, PATCH_FEATURE,              PatchLwsync,
  79         &hwulckPatch_eieio,             0x7c2004ac, PATCH_FEATURE,              PatchLwsync,
  80         &hwulckbPatch_isync,            0x60000000, PATCH_FEATURE,              PatchLwsync,
  81         &hwulckbPatch_eieio,            0x7c2004ac, PATCH_FEATURE,              PatchLwsync,
  82         &mulckPatch_isync,              0x60000000, PATCH_FEATURE,              PatchLwsync,
  83         &mulckPatch_eieio,              0x7c2004ac, PATCH_FEATURE,              PatchLwsync,
  84         &sulckPatch_isync,              0x60000000, PATCH_FEATURE,              PatchLwsync,
  85         &sulckPatch_eieio,              0x7c2004ac, PATCH_FEATURE,              PatchLwsync,
  86 #if     !MACH_LDEBUG
  87         &retfsectPatch_isync,   0x60000000, PATCH_FEATURE,              PatchLwsync,
  88         &retfsectPatch_eieio,   0x7c2004ac, PATCH_FEATURE,              PatchLwsync
  89 #else
  90         0,                                              0,                      PATCH_INVALID,          0,
  91         0,                                              0,                      PATCH_INVALID,          0
  92 #endif
  93         };
  94
  95 void ppc_init(boot_args *args)
  96 {
  97         int i;
  98         unsigned long *src,*dst;
  99         char *str;
 100         unsigned long   addr, videoAddr;
 101         unsigned int    maxmem;
 102         uint64_t                xmaxmem;
 103         unsigned int    cputrace;
 104         unsigned int    novmx;
 105         extern vm_offset_t static_memory_end;
 106         mapping *mp;
 107
 108         /*
 109          * Setup per_proc info for first cpu.
 110          */
 111
 112         per_proc_info[0].cpu_number = 0;
 113         per_proc_info[0].cpu_flags = 0;
 114         per_proc_info[0].istackptr = 0; /* we're on the interrupt stack */
 115         per_proc_info[0].intstack_top_ss = intstack_top_ss;
 116         per_proc_info[0].debstackptr = debstackptr;
 117         per_proc_info[0].debstack_top_ss = debstack_top_ss;
 118         per_proc_info[0].interrupts_enabled = 0;
 119         per_proc_info[0].active_kloaded = (unsigned int)
 120                 &active_kloaded[0];
 121         set_machine_current_thread(&pageout_thread);
 122         set_machine_current_act(&pageout_act);
 123         pageout_thread.top_act = &pageout_act;
 124         pageout_act.thread = &pageout_thread;
 125         pageout_act.mact.curctx = &pageout_act.mact.facctx;
 126         pageout_act.mact.facctx.facAct = &pageout_act;
 127         pageout_act.mact.cioSpace = invalSpace;                                 /* Initialize copyin/out space to invalid */
 128         pageout_act.mact.preemption_count = 1;
 129         per_proc_info[0].pp_preemption_count = -1;
 130         per_proc_info[0].pp_simple_lock_count = 0;
 131         per_proc_info[0].pp_interrupt_level = 0;
 132         per_proc_info[0].active_stacks = (unsigned int)
 133                 &active_stacks[0];
 134         per_proc_info[0].need_ast = (unsigned int)
 135                 &need_ast[0];
 136         per_proc_info[0].FPU_owner = 0;
 137         per_proc_info[0].VMX_owner = 0;
 138         mp = (mapping *)per_proc_info[0].ppCIOmp;
 139         mp->mpFlags = 0x01000000 | mpSpecial | 1;
 140         mp->mpSpace = invalSpace;
 141
 142         machine_slot[0].is_cpu = TRUE;
 143
 144         cpu_init();
 145
 146         /*
 147          * Setup some processor related structures to satisfy funnels.
 148          * Must be done before using unparallelized device drivers.
 149          */
 150         processor_ptr[0] = &processor_array[0];
 151         master_cpu = 0;
 152         master_processor = cpu_to_processor(master_cpu);
 153
 154         static_memory_end = round_page_32(args->topOfKernelData);;
 155
 156         PE_init_platform(FALSE, args);                          /* Get platform expert set up */
 157
 158         if (!PE_parse_boot_arg("novmx", &novmx)) novmx=0;       /* Special run without VMX? */
 159         if(novmx) {                                                                     /* Yeah, turn it off */
 160                 for(i = 0; i < NCPUS; i++) {                    /* Cycle through all potential processors */
 161                         per_proc_info[i].pf.Available &= ~pfAltivec;    /* Turn off Altivec available */
 162                 }
 163                 __asm__ volatile("mtsprg 2,%0" : : "r" (per_proc_info[0].pf.Available));        /* Set live value */
 164         }
 165
 166         if (!PE_parse_boot_arg("fn", &forcenap)) forcenap = 0;  /* If force nap not set, make 0 */
 167         else {
 168                 if(forcenap < 2) forcenap = forcenap + 1;                       /* Else set 1 for off, 2 for on */
 169                 else forcenap = 0;                                                                      /* Clear for error case */
 170         }
 171
 172         if (!PE_parse_boot_arg("diag", &dgWork.dgFlags)) dgWork.dgFlags=0;      /* Set diagnostic flags */
 173         if(dgWork.dgFlags & enaExpTrace) trcWork.traceMask = 0xFFFFFFFF;        /* If tracing requested, enable it */
 174
 175         if(PE_parse_boot_arg("ctrc", &cputrace)) {                                                      /* See if tracing is limited to a specific cpu */
 176                 trcWork.traceMask = (trcWork.traceMask & 0xFFFFFFF0) | (cputrace & 0xF);        /* Limit to 4 */
 177         }
 178
 179         if(!PE_parse_boot_arg("tb", &trcWork.traceSize)) {      /* See if non-default trace buffer size */
 180 #if DEBUG
 181                 trcWork.traceSize = 32;                                 /* Default 32 page trace table for DEBUG */
 182 #else
 183                 trcWork.traceSize = 8;                                  /* Default 8 page trace table for RELEASE */
 184 #endif
 185         }
 186
 187         if(trcWork.traceSize < 1) trcWork.traceSize = 1;        /* Minimum size of 1 page */
 188         if(trcWork.traceSize > 256) trcWork.traceSize = 256;    /* Maximum size of 256 pages */
 189         trcWork.traceSize = trcWork.traceSize * 4096;   /* Change page count to size */
 190
 191         if (!PE_parse_boot_arg("maxmem", &maxmem))
 192                 xmaxmem=0;
 193         else
 194                 xmaxmem = (uint64_t)maxmem * (1024 * 1024);
 195
 196 /*
 197  * VM initialization, after this we're using page tables...
 198  */
 199
 200         ppc_vm_init(xmaxmem, args);
 201
 202         PE_init_platform(TRUE, args);
 203
 204         machine_startup(args);
 205 }
 206
 207 ppc_init_cpu(
 208         struct per_proc_info *proc_info)
 209 {
 210         int i;
 211
 212         if(!(proc_info->next_savearea))                 /* Do we have a savearea set up already? */
 213                 proc_info->next_savearea = (vm_offset_t)save_get_init();        /* Get a savearea  */
 214
 215         cpu_init();
 216
 217         ppc_vm_cpu_init(proc_info);
 218
 219         ml_thrm_init();                                                 /* Start thermal monitoring on this processor */
 220
 221         slave_main();
 222 }