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         thread_t                thread;
 107         mapping *mp;
 108
 109         /*
 110          * Setup per_proc info for first cpu.
 111          */
 112
 113         per_proc_info[0].cpu_number = 0;
 114         per_proc_info[0].cpu_flags = 0;
 115         per_proc_info[0].istackptr = 0; /* we're on the interrupt stack */
 116         per_proc_info[0].intstack_top_ss = intstack_top_ss;
 117         per_proc_info[0].debstackptr = debstackptr;
 118         per_proc_info[0].debstack_top_ss = debstack_top_ss;
 119         per_proc_info[0].interrupts_enabled = 0;
 120         per_proc_info[0].pp_preemption_count = -1;
 121         per_proc_info[0].pp_simple_lock_count = 0;
 122         per_proc_info[0].pp_interrupt_level = 0;
 123         per_proc_info[0].need_ast = (unsigned int)&need_ast[0];
 124         per_proc_info[0].FPU_owner = 0;
 125         per_proc_info[0].VMX_owner = 0;
 126         mp = (mapping *)per_proc_info[0].ppCIOmp;
 127         mp->mpFlags = 0x01000000 | mpSpecial | 1;
 128         mp->mpSpace = invalSpace;
 129
 130         machine_slot[0].is_cpu = TRUE;
 131
 132         thread_bootstrap();
 133
 134         thread = current_act();
 135         thread->mact.curctx = &thread->mact.facctx;
 136         thread->mact.facctx.facAct = thread;
 137         thread->mact.cioSpace = invalSpace;                                     /* Initialize copyin/out space to invalid */
 138         thread->mact.preemption_count = 1;
 139
 140         cpu_init();
 141
 142         /*
 143          * Setup some processor related structures to satisfy funnels.
 144          * Must be done before using unparallelized device drivers.
 145          */
 146         processor_ptr[0] = &processor_array[0];
 147         master_cpu = 0;
 148         master_processor = cpu_to_processor(master_cpu);
 149
 150         static_memory_end = round_page_32(args->topOfKernelData);;
 151
 152         PE_init_platform(FALSE, args);                          /* Get platform expert set up */
 153
 154         if (!PE_parse_boot_arg("novmx", &novmx)) novmx=0;       /* Special run without VMX? */
 155         if(novmx) {                                                                     /* Yeah, turn it off */
 156                 for(i = 0; i < NCPUS; i++) {                    /* Cycle through all potential processors */
 157                         per_proc_info[i].pf.Available &= ~pfAltivec;    /* Turn off Altivec available */
 158                 }
 159                 __asm__ volatile("mtsprg 2,%0" : : "r" (per_proc_info[0].pf.Available));        /* Set live value */
 160         }
 161
 162         if (!PE_parse_boot_arg("fn", &forcenap)) forcenap = 0;  /* If force nap not set, make 0 */
 163         else {
 164                 if(forcenap < 2) forcenap = forcenap + 1;                       /* Else set 1 for off, 2 for on */
 165                 else forcenap = 0;                                                                      /* Clear for error case */
 166         }
 167
 168         if (!PE_parse_boot_arg("diag", &dgWork.dgFlags)) dgWork.dgFlags=0;      /* Set diagnostic flags */
 169         if(dgWork.dgFlags & enaExpTrace) trcWork.traceMask = 0xFFFFFFFF;        /* If tracing requested, enable it */
 170
 171         if(PE_parse_boot_arg("ctrc", &cputrace)) {                                                      /* See if tracing is limited to a specific cpu */
 172                 trcWork.traceMask = (trcWork.traceMask & 0xFFFFFFF0) | (cputrace & 0xF);        /* Limit to 4 */
 173         }
 174
 175         if(!PE_parse_boot_arg("tb", &trcWork.traceSize)) {      /* See if non-default trace buffer size */
 176 #if DEBUG
 177                 trcWork.traceSize = 32;                                 /* Default 32 page trace table for DEBUG */
 178 #else
 179                 trcWork.traceSize = 8;                                  /* Default 8 page trace table for RELEASE */
 180 #endif
 181         }
 182
 183         if(trcWork.traceSize < 1) trcWork.traceSize = 1;        /* Minimum size of 1 page */
 184         if(trcWork.traceSize > 256) trcWork.traceSize = 256;    /* Maximum size of 256 pages */
 185         trcWork.traceSize = trcWork.traceSize * 4096;   /* Change page count to size */
 186
 187         if (!PE_parse_boot_arg("maxmem", &maxmem))
 188                 xmaxmem=0;
 189         else
 190                 xmaxmem = (uint64_t)maxmem * (1024 * 1024);
 191
 192 /*
 193  * VM initialization, after this we're using page tables...
 194  */
 195
 196         ppc_vm_init(xmaxmem, args);
 197
 198         PE_init_platform(TRUE, args);
 199
 200         machine_startup(args);
 201 }
 202
 203 ppc_init_cpu(
 204         struct per_proc_info *proc_info)
 205 {
 206         int i;
 207
 208         proc_info->cpu_flags &= ~SleepState;
 209
 210         if(!(proc_info->next_savearea))                 /* Do we have a savearea set up already? */
 211                 proc_info->next_savearea = (uint64_t)save_get_init();   /* Get a savearea  */
 212
 213         cpu_init();
 214
 215         ppc_vm_cpu_init(proc_info);
 216
 217         ml_thrm_init();                                                 /* Start thermal monitoring on this processor */
 218
 219         slave_main();
 220 }