X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/de355530ae67247cbd0da700edb3a2a1dae884c2..7ee9d059c4eecf68ae4f8b0fb99ae2471eda79af:/osfmk/i386/AT386/model_dep.c diff --git a/osfmk/i386/AT386/model_dep.c b/osfmk/i386/AT386/model_dep.c index c3cb5bc94..b020ed419 100644 --- a/osfmk/i386/AT386/model_dep.c +++ b/osfmk/i386/AT386/model_dep.c @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2010 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ @@ -60,12 +66,8 @@ * Basic initialization for I386 - ISA bus machines. */ -#include #include -#include #include -#include -#include #include @@ -74,278 +76,610 @@ #include #include #include -#include #include #include #include #include #include #include -#include -#include #include -#include -#include -#include -#include -#include -#include -#include +#include +#include +#include #include +#include +#include +#include +#include /* mp_rendezvous_break_lock */ #include -#include -#include +#include +#include +#include +#if CONFIG_MTRR +#include +#endif +#include +#include +#include /* inb() */ +#include #if MACH_KDB #include #endif /* MACH_KDB */ -#include -#ifdef __MACHO__ -#include -#include -#include -#endif - -#if NCPUS > 1 -#include -#endif /* NCPUS */ -#if MP_V1_1 -#include -#endif /* MP_V1_1 */ +#include +#include +#include #include +#include -vm_size_t mem_size = 0; -vm_offset_t first_addr = 0; /* set by start.s - keep out of bss */ -vm_offset_t first_avail = 0;/* first after page tables */ -vm_offset_t last_addr; +#include -vm_offset_t avail_start, avail_end; -vm_offset_t virtual_avail, virtual_end; -vm_offset_t hole_start, hole_end; -vm_offset_t avail_next; -unsigned int avail_remaining; +#include +#include +#include -/* parameters passed from bootstrap loader */ -int cnvmem = 0; /* must be in .data section */ -int extmem = 0; +#include +#include -/* FIXME!! REMOVE WHEN OSFMK DEVICES ARE COMPLETELY PULLED OUT */ -int dev_name_count = 0; -int dev_name_list = 0; - -#ifndef __MACHO__ -extern char edata, end; -#endif +#define DPRINTF(x...) +//#define DPRINTF(x...) kprintf(x) -extern char version[]; +static void machine_conf(void); -void parse_arguments(void); -const char *getenv(const char *); +extern int default_preemption_rate; +extern int max_unsafe_quanta; +extern int max_poll_quanta; +extern unsigned int panic_is_inited; -#define BOOT_LINE_LENGTH 160 -char boot_string_store[BOOT_LINE_LENGTH] = {0}; -char *boot_string = (char *)0; -int boot_string_sz = BOOT_LINE_LENGTH; -int boottype = 0; +int db_run_mode; -#if __MACHO__ -#include -vm_offset_t edata, etext, end; +volatile int pbtcpu = -1; +hw_lock_data_t pbtlock; /* backtrace print lock */ +uint32_t pbtcnt = 0; -extern struct mach_header _mh_execute_header; -void *sectTEXTB; int sectSizeTEXT; -void *sectDATAB; int sectSizeDATA; -void *sectOBJCB; int sectSizeOBJC; -void *sectLINKB; int sectSizeLINK; +volatile int panic_double_fault_cpu = -1; -/* Kernel boot information */ -KERNBOOTSTRUCT kernBootStructData; -KERNBOOTSTRUCT *kernBootStruct; +#if defined (__i386__) +#define PRINT_ARGS_FROM_STACK_FRAME 1 +#elif defined (__x86_64__) +#define PRINT_ARGS_FROM_STACK_FRAME 0 +#else +#error unsupported architecture #endif -vm_offset_t kern_args_start = 0; /* kernel arguments */ -vm_size_t kern_args_size = 0; /* size of kernel arguments */ - -#ifdef __MACHO__ - -unsigned long -i386_preinit() -{ - int i; - struct segment_command *sgp; - struct section *sp; - - sgp = (struct segment_command *) getsegbyname("__DATA"); - if (sgp) { - sp = (struct section *) firstsect(sgp); - if (sp) { - do { - if (sp->flags & S_ZEROFILL) - bzero((char *) sp->addr, sp->size); - } while (sp = (struct section *)nextsect(sgp, sp)); - } - } - - bcopy((char *) KERNSTRUCT_ADDR, (char *) &kernBootStructData, - sizeof(kernBootStructData)); +#ifdef __LP64__ +typedef struct nlist_64 kernel_nlist_t; +#else +typedef struct nlist kernel_nlist_t; +#endif - kernBootStruct = &kernBootStructData; +typedef struct _cframe_t { + struct _cframe_t *prev; + uintptr_t caller; +#if PRINT_ARGS_FROM_STACK_FRAME + unsigned args[0]; +#endif +} cframe_t; - end = round_page( kernBootStruct->kaddr + kernBootStruct->ksize ); +static unsigned panic_io_port; +static unsigned commit_paniclog_to_nvram; - return end; -} -#endif +unsigned int debug_boot_arg; -/* - * Cpu initialization. Running virtual, but without MACH VM - * set up. First C routine called. - */ void machine_startup(void) { + int boot_arg; -#ifdef __MACHO__ - /* Now copy over various bits.. */ - cnvmem = kernBootStruct->convmem; - extmem = kernBootStruct->extmem; - kern_args_start = (vm_offset_t) kernBootStruct->bootString; - kern_args_size = strlen(kernBootStruct->bootString); - boottype = kernBootStruct->rootdev; - - /* Now retrieve addresses for end, edata, and etext - * from MACH-O headers. - */ - - sectTEXTB = (void *) getsegdatafromheader( - &_mh_execute_header, "__TEXT", §SizeTEXT); - sectDATAB = (void *) getsegdatafromheader( - &_mh_execute_header, "__DATA", §SizeDATA); - sectOBJCB = (void *) getsegdatafromheader( - &_mh_execute_header, "__OBJC", §SizeOBJC); - sectLINKB = (void *) getsegdatafromheader( - &_mh_execute_header, "__LINKEDIT", §SizeLINK); - - etext = (vm_offset_t) sectTEXTB + sectSizeTEXT; - edata = (vm_offset_t) sectDATAB + sectSizeDATA; +#if 0 + if( PE_get_hotkey( kPEControlKey )) + halt_in_debugger = halt_in_debugger ? 0 : 1; #endif - printf_init(); /* Init this in case we need debugger */ - panic_init(); /* Init this in case we need debugger */ - - PE_init_platform(FALSE, kernBootStruct); - PE_init_kprintf(FALSE); - PE_init_printf(FALSE); - - /* - * Parse startup arguments - */ - parse_arguments(); + if (PE_parse_boot_argn("debug", &debug_boot_arg, sizeof (debug_boot_arg))) { + panicDebugging = TRUE; + if (debug_boot_arg & DB_HALT) halt_in_debugger=1; + if (debug_boot_arg & DB_PRT) disable_debug_output=FALSE; + if (debug_boot_arg & DB_SLOG) systemLogDiags=TRUE; + if (debug_boot_arg & DB_LOG_PI_SCRN) logPanicDataToScreen=TRUE; + } else { + debug_boot_arg = 0; + } - /* - * Set up initial thread so current_thread() works early on - */ - pageout_thread.top_act = &pageout_act; - pageout_act.thread = &pageout_thread; - thread_machine_set_current(&pageout_thread); + if (!PE_parse_boot_argn("nvram_paniclog", &commit_paniclog_to_nvram, sizeof (commit_paniclog_to_nvram))) + commit_paniclog_to_nvram = 1; /* - * Do basic VM initialization + * Entering the debugger will put the CPUs into a "safe" + * power mode. */ - i386_init(); + if (PE_parse_boot_argn("pmsafe_debug", &boot_arg, sizeof (boot_arg))) + pmsafe_debug = boot_arg; - PE_init_platform(TRUE, kernBootStruct); - PE_init_kprintf(TRUE); - PE_init_printf(TRUE); +#if NOTYET + hw_lock_init(&debugger_lock); /* initialize debugger lock */ +#endif + hw_lock_init(&pbtlock); /* initialize print backtrace lock */ #if MACH_KDB /* - * Initialize the kernel debugger. + * Initialize KDB */ +#if DB_MACHINE_COMMANDS + db_machine_commands_install(ppc_db_commands); +#endif /* DB_MACHINE_COMMANDS */ ddb_init(); + if (boot_arg & DB_KDB) + current_debugger = KDB_CUR_DB; + /* * Cause a breakpoint trap to the debugger before proceeding * any further if the proper option bit was specified in * the boot flags. */ - - if (halt_in_debugger) { - printf("inline call to debugger(machine_startup)\n"); - Debugger("inline call"); + if (halt_in_debugger && (current_debugger == KDB_CUR_DB)) { + Debugger("inline call to debugger(machine_startup)"); + halt_in_debugger = 0; + active_debugger =1; } -#endif /* MACH_KDB */ +#endif /* MACH_KDB */ - TR_INIT(); + if (PE_parse_boot_argn("preempt", &boot_arg, sizeof (boot_arg))) { + default_preemption_rate = boot_arg; + } + if (PE_parse_boot_argn("unsafe", &boot_arg, sizeof (boot_arg))) { + max_unsafe_quanta = boot_arg; + } + if (PE_parse_boot_argn("poll", &boot_arg, sizeof (boot_arg))) { + max_poll_quanta = boot_arg; + } + if (PE_parse_boot_argn("yield", &boot_arg, sizeof (boot_arg))) { + sched_poll_yield_shift = boot_arg; + } +/* The I/O port to issue a read from, in the event of a panic. Useful for + * triggering logic analyzers. + */ + if (PE_parse_boot_argn("panic_io_port", &boot_arg, sizeof (boot_arg))) { + /*I/O ports range from 0 through 0xFFFF */ + panic_io_port = boot_arg & 0xffff; + } - printf(version); + machine_conf(); - machine_slot[0].is_cpu = TRUE; - machine_slot[0].running = TRUE; -#ifdef MACH_BSD - /* FIXME */ - machine_slot[0].cpu_type = CPU_TYPE_I386; - machine_slot[0].cpu_subtype = CPU_SUBTYPE_PENTPRO; -#else - machine_slot[0].cpu_type = cpuid_cputype(0); - machine_slot[0].cpu_subtype = CPU_SUBTYPE_AT386; +#if NOTYET + ml_thrm_init(); /* Start thermal monitoring on this processor */ #endif /* * Start the system. */ -#if NCPUS > 1 - mp_desc_init(0); -#endif /* NCPUS */ + kernel_bootstrap(); + /*NOTREACHED*/ +} - setup_main(); + +static void +machine_conf(void) +{ + machine_info.memory_size = (typeof(machine_info.memory_size))mem_size; } -vm_offset_t env_start = 0; /* environment */ -vm_size_t env_size = 0; /* size of environment */ +extern void *gPEEFIRuntimeServices; +extern void *gPEEFISystemTable; -/* - * Parse command line arguments. +/*- + * COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or + * code or tables extracted from it, as desired without restriction. + * + * First, the polynomial itself and its table of feedback terms. The + * polynomial is + * X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 + * + * Note that we take it "backwards" and put the highest-order term in + * the lowest-order bit. The X^32 term is "implied"; the LSB is the + * X^31 term, etc. The X^0 term (usually shown as "+1") results in + * the MSB being 1 + * + * Note that the usual hardware shift register implementation, which + * is what we're using (we're merely optimizing it by doing eight-bit + * chunks at a time) shifts bits into the lowest-order term. In our + * implementation, that means shifting towards the right. Why do we + * do it this way? Because the calculated CRC must be transmitted in + * order from highest-order term to lowest-order term. UARTs transmit + * characters in order from LSB to MSB. By storing the CRC this way + * we hand it to the UART in the order low-byte to high-byte; the UART + * sends each low-bit to hight-bit; and the result is transmission bit + * by bit from highest- to lowest-order term without requiring any bit + * shuffling on our part. Reception works similarly + * + * The feedback terms table consists of 256, 32-bit entries. Notes + * + * The table can be generated at runtime if desired; code to do so + * is shown later. It might not be obvious, but the feedback + * terms simply represent the results of eight shift/xor opera + * tions for all combinations of data and CRC register values + * + * The values must be right-shifted by eight bits by the "updcrc + * logic; the shift must be unsigned (bring in zeroes). On some + * hardware you could probably optimize the shift in assembler by + * using byte-swap instructions + * polynomial $edb88320 + * + * + * CRC32 code derived from work by Gary S. Brown. */ -void -parse_arguments(void) + +static uint32_t crc32_tab[] = { + 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, + 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, + 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, + 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, + 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, + 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, + 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c, + 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, + 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, + 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, + 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, + 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433, + 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, + 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, + 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, + 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, + 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, + 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, + 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, + 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, + 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, + 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, + 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, + 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, + 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, + 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, + 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, + 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b, + 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, + 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, + 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, + 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, + 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, + 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, + 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, + 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, + 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, + 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, + 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, + 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, + 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, + 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, + 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d +}; + +static uint32_t +crc32(uint32_t crc, const void *buf, size_t size) { - unsigned int boot_arg; + const uint8_t *p; - if (PE_parse_boot_arg("maxmem", &boot_arg)) - { - mem_size = boot_arg * (1024 * 1024); + p = buf; + crc = crc ^ ~0U; + + while (size--) + crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8); + + return crc ^ ~0U; +} + +static void +efi_set_tables_64(EFI_SYSTEM_TABLE_64 * system_table) +{ + EFI_RUNTIME_SERVICES_64 *runtime; + uint32_t hdr_cksum; + uint32_t cksum; + + DPRINTF("Processing 64-bit EFI tables at %p\n", system_table); + do { + DPRINTF("Header:\n"); + DPRINTF(" Signature: 0x%016llx\n", system_table->Hdr.Signature); + DPRINTF(" Revision: 0x%08x\n", system_table->Hdr.Revision); + DPRINTF(" HeaderSize: 0x%08x\n", system_table->Hdr.HeaderSize); + DPRINTF(" CRC32: 0x%08x\n", system_table->Hdr.CRC32); + DPRINTF("RuntimeServices: 0x%016llx\n", system_table->RuntimeServices); + if (system_table->Hdr.Signature != EFI_SYSTEM_TABLE_SIGNATURE) { + kprintf("Bad EFI system table signature\n"); + break; + } + // Verify signature of the system table + hdr_cksum = system_table->Hdr.CRC32; + system_table->Hdr.CRC32 = 0; + cksum = crc32(0L, system_table, system_table->Hdr.HeaderSize); + + DPRINTF("System table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum); + system_table->Hdr.CRC32 = hdr_cksum; + if (cksum != hdr_cksum) { + kprintf("Bad EFI system table checksum\n"); + break; + } + + gPEEFISystemTable = system_table; + + if (!cpu_mode_is64bit()) { + kprintf("Skipping 64-bit EFI runtime services for 32-bit legacy mode\n"); + break; + } + + if(system_table->RuntimeServices == 0) { + kprintf("No runtime table present\n"); + break; + } + DPRINTF("RuntimeServices table at 0x%qx\n", system_table->RuntimeServices); + // 64-bit virtual address is OK for 64-bit EFI and 64/32-bit kernel. + runtime = (EFI_RUNTIME_SERVICES_64 *) (uintptr_t)system_table->RuntimeServices; + DPRINTF("Checking runtime services table %p\n", runtime); + if (runtime->Hdr.Signature != EFI_RUNTIME_SERVICES_SIGNATURE) { + kprintf("Bad EFI runtime table signature\n"); + break; + } + + // Verify signature of runtime services table + hdr_cksum = runtime->Hdr.CRC32; + runtime->Hdr.CRC32 = 0; + cksum = crc32(0L, runtime, runtime->Hdr.HeaderSize); + + DPRINTF("Runtime table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum); + runtime->Hdr.CRC32 = hdr_cksum; + if (cksum != hdr_cksum) { + kprintf("Bad EFI runtime table checksum\n"); + break; + } + + gPEEFIRuntimeServices = runtime; } + while (FALSE); +} - if (PE_parse_boot_arg("debug", &boot_arg)) - { - if (boot_arg & DB_HALT) halt_in_debugger = 1; - if (boot_arg & DB_PRT) disableDebugOuput = FALSE; +static void +efi_set_tables_32(EFI_SYSTEM_TABLE_32 * system_table) +{ + EFI_RUNTIME_SERVICES_32 *runtime; + uint32_t hdr_cksum; + uint32_t cksum; + + DPRINTF("Processing 32-bit EFI tables at %p\n", system_table); + do { + DPRINTF("Header:\n"); + DPRINTF(" Signature: 0x%016llx\n", system_table->Hdr.Signature); + DPRINTF(" Revision: 0x%08x\n", system_table->Hdr.Revision); + DPRINTF(" HeaderSize: 0x%08x\n", system_table->Hdr.HeaderSize); + DPRINTF(" CRC32: 0x%08x\n", system_table->Hdr.CRC32); + DPRINTF("RuntimeServices: 0x%08x\n", system_table->RuntimeServices); + if (system_table->Hdr.Signature != EFI_SYSTEM_TABLE_SIGNATURE) { + kprintf("Bad EFI system table signature\n"); + break; + } + // Verify signature of the system table + hdr_cksum = system_table->Hdr.CRC32; + system_table->Hdr.CRC32 = 0; + DPRINTF("System table at %p HeaderSize 0x%x\n", system_table, system_table->Hdr.HeaderSize); + cksum = crc32(0L, system_table, system_table->Hdr.HeaderSize); + + DPRINTF("System table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum); + system_table->Hdr.CRC32 = hdr_cksum; + if (cksum != hdr_cksum) { + kprintf("Bad EFI system table checksum\n"); + break; + } + + gPEEFISystemTable = system_table; + + if(system_table->RuntimeServices == 0) { + kprintf("No runtime table present\n"); + break; + } + DPRINTF("RuntimeServices table at 0x%x\n", system_table->RuntimeServices); + // 32-bit virtual address is OK for 32-bit EFI and 32-bit kernel. + // For a 64-bit kernel, booter provides a virtual address mod 4G + runtime = (EFI_RUNTIME_SERVICES_32 *) +#ifdef __x86_64__ + (system_table->RuntimeServices | VM_MIN_KERNEL_ADDRESS); +#else + system_table->RuntimeServices; +#endif + DPRINTF("Runtime table addressed at %p\n", runtime); + if (runtime->Hdr.Signature != EFI_RUNTIME_SERVICES_SIGNATURE) { + kprintf("Bad EFI runtime table signature\n"); + break; + } + + // Verify signature of runtime services table + hdr_cksum = runtime->Hdr.CRC32; + runtime->Hdr.CRC32 = 0; + cksum = crc32(0L, runtime, runtime->Hdr.HeaderSize); + + DPRINTF("Runtime table calculated CRC32 = 0x%x, header = 0x%x\n", cksum, hdr_cksum); + runtime->Hdr.CRC32 = hdr_cksum; + if (cksum != hdr_cksum) { + kprintf("Bad EFI runtime table checksum\n"); + break; + } + + DPRINTF("Runtime functions\n"); + DPRINTF(" GetTime : 0x%x\n", runtime->GetTime); + DPRINTF(" SetTime : 0x%x\n", runtime->SetTime); + DPRINTF(" GetWakeupTime : 0x%x\n", runtime->GetWakeupTime); + DPRINTF(" SetWakeupTime : 0x%x\n", runtime->SetWakeupTime); + DPRINTF(" SetVirtualAddressMap : 0x%x\n", runtime->SetVirtualAddressMap); + DPRINTF(" ConvertPointer : 0x%x\n", runtime->ConvertPointer); + DPRINTF(" GetVariable : 0x%x\n", runtime->GetVariable); + DPRINTF(" GetNextVariableName : 0x%x\n", runtime->GetNextVariableName); + DPRINTF(" SetVariable : 0x%x\n", runtime->SetVariable); + DPRINTF(" GetNextHighMonotonicCount: 0x%x\n", runtime->GetNextHighMonotonicCount); + DPRINTF(" ResetSystem : 0x%x\n", runtime->ResetSystem); + + gPEEFIRuntimeServices = runtime; } + while (FALSE); } -const char * -getenv(const char *name) + +/* Map in EFI runtime areas. */ +static void +efi_init(void) { - int len = strlen(name); - const char *p = (const char *)env_start; - const char *endp = p + env_size; + boot_args *args = (boot_args *)PE_state.bootArgs; - while (p < endp) { - if (len >= endp - p) - break; - if (strncmp(name, p, len) == 0 && *(p + len) == '=') - return p + len + 1; - while (*p++) - ; + kprintf("Initializing EFI runtime services\n"); + + do + { + vm_offset_t vm_size, vm_addr; + vm_map_offset_t phys_addr; + EfiMemoryRange *mptr; + unsigned int msize, mcount; + unsigned int i; + + msize = args->MemoryMapDescriptorSize; + mcount = args->MemoryMapSize / msize; + + DPRINTF("efi_init() kernel base: 0x%x size: 0x%x\n", + args->kaddr, args->ksize); + DPRINTF(" efiSystemTable physical: 0x%x virtual: %p\n", + args->efiSystemTable, + (void *) ml_static_ptovirt(args->efiSystemTable)); + DPRINTF(" efiRuntimeServicesPageStart: 0x%x\n", + args->efiRuntimeServicesPageStart); + DPRINTF(" efiRuntimeServicesPageCount: 0x%x\n", + args->efiRuntimeServicesPageCount); + DPRINTF(" efiRuntimeServicesVirtualPageStart: 0x%016llx\n", + args->efiRuntimeServicesVirtualPageStart); + mptr = (EfiMemoryRange *)ml_static_ptovirt(args->MemoryMap); + for (i=0; i < mcount; i++, mptr = (EfiMemoryRange *)(((vm_offset_t)mptr) + msize)) { + if (((mptr->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) ) { + vm_size = (vm_offset_t)i386_ptob((uint32_t)mptr->NumberOfPages); + vm_addr = (vm_offset_t) mptr->VirtualStart; +#ifdef __x86_64__ + /* For K64 on EFI32, shadow-map into high KVA */ + if (vm_addr < VM_MIN_KERNEL_ADDRESS) + vm_addr |= VM_MIN_KERNEL_ADDRESS; +#endif + phys_addr = (vm_map_offset_t) mptr->PhysicalStart; + DPRINTF(" Type: %x phys: %p EFIv: %p kv: %p size: %p\n", + mptr->Type, + (void *) (uintptr_t) phys_addr, + (void *) (uintptr_t) mptr->VirtualStart, + (void *) vm_addr, + (void *) vm_size); + pmap_map(vm_addr, phys_addr, phys_addr + round_page(vm_size), + (mptr->Type == kEfiRuntimeServicesCode) ? VM_PROT_READ | VM_PROT_EXECUTE : VM_PROT_READ|VM_PROT_WRITE, + (mptr->Type == EfiMemoryMappedIO) ? VM_WIMG_IO : VM_WIMG_USE_DEFAULT); + } } - return NULL; + + if (args->Version != kBootArgsVersion2) + panic("Incompatible boot args version %d revision %d\n", args->Version, args->Revision); + + kprintf("Boot args version %d revision %d mode %d\n", args->Version, args->Revision, args->efiMode); + if (args->efiMode == kBootArgsEfiMode64) { + efi_set_tables_64((EFI_SYSTEM_TABLE_64 *) ml_static_ptovirt(args->efiSystemTable)); + } else { + efi_set_tables_32((EFI_SYSTEM_TABLE_32 *) ml_static_ptovirt(args->efiSystemTable)); + } + } + while (FALSE); + + return; } -extern void -calibrate_delay(void); +/* Remap EFI runtime areas. */ +void +hibernate_newruntime_map(void * map, vm_size_t map_size, uint32_t system_table_offset) +{ + boot_args *args = (boot_args *)PE_state.bootArgs; + + kprintf("Reinitializing EFI runtime services\n"); + + do + { + vm_offset_t vm_size, vm_addr; + vm_map_offset_t phys_addr; + EfiMemoryRange *mptr; + unsigned int msize, mcount; + unsigned int i; + + gPEEFISystemTable = 0; + gPEEFIRuntimeServices = 0; + + system_table_offset += ptoa_32(args->efiRuntimeServicesPageStart); + + kprintf("Old system table 0x%x, new 0x%x\n", + (uint32_t)args->efiSystemTable, system_table_offset); + + args->efiSystemTable = system_table_offset; + + kprintf("Old map:\n"); + msize = args->MemoryMapDescriptorSize; + mcount = args->MemoryMapSize / msize; + mptr = (EfiMemoryRange *)ml_static_ptovirt(args->MemoryMap); + for (i=0; i < mcount; i++, mptr = (EfiMemoryRange *)(((vm_offset_t)mptr) + msize)) { + if ((mptr->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) { + + vm_size = (vm_offset_t)i386_ptob((uint32_t)mptr->NumberOfPages); + vm_addr = (vm_offset_t) mptr->VirtualStart; +#ifdef __x86_64__ + /* K64 on EFI32 */ + if (vm_addr < VM_MIN_KERNEL_ADDRESS) + vm_addr |= VM_MIN_KERNEL_ADDRESS; +#endif + phys_addr = (vm_map_offset_t) mptr->PhysicalStart; + + kprintf("mapping[%u] %qx @ %lx, %llu\n", mptr->Type, phys_addr, (unsigned long)vm_addr, mptr->NumberOfPages); + } + } + + pmap_remove(kernel_pmap, i386_ptob(args->efiRuntimeServicesPageStart), + i386_ptob(args->efiRuntimeServicesPageStart + args->efiRuntimeServicesPageCount)); + + kprintf("New map:\n"); + msize = args->MemoryMapDescriptorSize; + mcount = (unsigned int )(map_size / msize); + mptr = map; + for (i=0; i < mcount; i++, mptr = (EfiMemoryRange *)(((vm_offset_t)mptr) + msize)) { + if ((mptr->Attribute & EFI_MEMORY_RUNTIME) == EFI_MEMORY_RUNTIME) { + + vm_size = (vm_offset_t)i386_ptob((uint32_t)mptr->NumberOfPages); + vm_addr = (vm_offset_t) mptr->VirtualStart; +#ifdef __x86_64__ + if (vm_addr < VM_MIN_KERNEL_ADDRESS) + vm_addr |= VM_MIN_KERNEL_ADDRESS; +#endif + phys_addr = (vm_map_offset_t) mptr->PhysicalStart; + + kprintf("mapping[%u] %qx @ %lx, %llu\n", mptr->Type, phys_addr, (unsigned long)vm_addr, mptr->NumberOfPages); + + pmap_map(vm_addr, phys_addr, phys_addr + round_page(vm_size), + (mptr->Type == kEfiRuntimeServicesCode) ? VM_PROT_READ | VM_PROT_EXECUTE : VM_PROT_READ|VM_PROT_WRITE, + (mptr->Type == EfiMemoryMappedIO) ? VM_WIMG_IO : VM_WIMG_USE_DEFAULT); + } + } + + if (args->Version != kBootArgsVersion2) + panic("Incompatible boot args version %d revision %d\n", args->Version, args->Revision); + + kprintf("Boot args version %d revision %d mode %d\n", args->Version, args->Revision, args->efiMode); + if (args->efiMode == kBootArgsEfiMode64) { + efi_set_tables_64((EFI_SYSTEM_TABLE_64 *) ml_static_ptovirt(args->efiSystemTable)); + } else { + efi_set_tables_32((EFI_SYSTEM_TABLE_32 *) ml_static_ptovirt(args->efiSystemTable)); + } + } + while (FALSE); + + kprintf("Done reinitializing EFI runtime services\n"); + + return; +} /* * Find devices. The system is alive. @@ -353,41 +687,49 @@ calibrate_delay(void); void machine_init(void) { - int unit; - const char *p; - int n; + /* Ensure panic buffer is initialized. */ + debug_log_init(); /* - * Adjust delay count before entering drivers + * Display CPU identification */ + cpuid_cpu_display("CPU identification"); + cpuid_feature_display("CPU features"); + cpuid_extfeature_display("CPU extended features"); + + /* + * Initialize EFI runtime services. + */ + efi_init(); - calibrate_delay(); + smp_init(); /* - * Display CPU identification + * Set up to use floating point. */ - cpuid_cpu_display("CPU identification", 0); - cpuid_cache_display("CPU configuration", 0); + init_fpu(); -#if MP_V1_1 - mp_v1_1_init(); -#endif /* MP_V1_1 */ + /* + * Configure clock devices. + */ + clock_config(); +#if CONFIG_MTRR /* - * Set up to use floating point. + * Initialize MTRR from boot processor. */ - init_fpu(); + mtrr_init(); -#if 0 -#if NPCI > 0 - dma_zones_init(); -#endif /* NPCI > 0 */ + /* + * Set up PAT for boot processor. + */ + pat_init(); #endif /* - * Configure clock devices. + * Free lowmem pages and complete other setup */ - clock_config(); + pmap_lowmem_finalize(); } /* @@ -407,234 +749,445 @@ int reset_mem_on_reboot = 1; void halt_all_cpus(boolean_t reboot) { - if (reboot) - { - /* - * Tell the BIOS not to clear and test memory. - */ - if (!reset_mem_on_reboot) - *(unsigned short *)phystokv(0x472) = 0x1234; - - printf("MACH Reboot\n"); - PEHaltRestart( kPERestartCPU ); - } - else - { - printf("CPU halted\n"); - PEHaltRestart( kPEHaltCPU ); - } - while(1); + if (reboot) { + printf("MACH Reboot\n"); + PEHaltRestart( kPERestartCPU ); + } else { + printf("CPU halted\n"); + PEHaltRestart( kPEHaltCPU ); + } + while(1); } -/* - * Basic VM initialization. + +/* Issue an I/O port read if one has been requested - this is an event logic + * analyzers can use as a trigger point. */ void -i386_init(void) -{ - int i,j; /* Standard index vars. */ - vm_size_t bios_hole_size; +panic_io_port_read(void) { + if (panic_io_port) + (void)inb(panic_io_port); +} -#ifndef __MACHO__ - /* - * Zero the BSS. - */ +/* For use with the MP rendezvous mechanism + */ - bzero((char *)&edata,(unsigned)(&end - &edata)); -#endif +uint64_t panic_restart_timeout = ~(0ULL); - boot_string = &boot_string_store[0]; +static void +machine_halt_cpu(void) { + panic_io_port_read(); - /* - * Initialize the pic prior to any possible call to an spl. - */ + if (panic_restart_timeout != ~(0ULL)) { + uint64_t deadline = mach_absolute_time() + panic_restart_timeout; + while (mach_absolute_time() < deadline) { + cpu_pause(); + } + kprintf("Invoking PE_halt_restart\n"); + /* Attempt restart via ACPI RESET_REG; at the time of this + * writing, this is routine is chained through AppleSMC-> + * AppleACPIPlatform + */ + if (PE_halt_restart) + (*PE_halt_restart)(kPERestartCPU); + } + pmCPUHalt(PM_HALT_DEBUG); +} - set_cpu_model(); - vm_set_page_size(); +void +Debugger( + const char *message) +{ + unsigned long pi_size = 0; + void *stackptr; + int cn = cpu_number(); + + hw_atomic_add(&debug_mode, 1); + if (!panic_is_inited) { + postcode(PANIC_HLT); + asm("hlt"); + } - /* - * Initialize the Event Trace Analysis Package - * Static Phase: 1 of 2 - */ - etap_init_phase1(); + printf("Debugger called: <%s>\n", message); + kprintf("Debugger called: <%s>\n", message); /* - * Compute the memory size. + * Skip the graphical panic box if no panic string. + * This is the case if we're being called from + * host_reboot(,HOST_REBOOT_DEBUGGER) + * as a quiet way into the debugger. */ -#if 1 - /* FIXME - * fdisk needs to change to use a sysctl instead of - * opening /dev/kmem and reading out the kernboot structure - */ + if (panicstr) { + disable_preemption(); - first_addr = (char *)(KERNSTRUCT_ADDR) + sizeof(KERNBOOTSTRUCT); -#else -#if NCPUS > 1 - first_addr = 0x1000; -#else - /* First two pages are used to boot the other cpus. */ - /* TODO - reclaim pages after all cpus have booted */ +/* Issue an I/O port read if one has been requested - this is an event logic + * analyzers can use as a trigger point. + */ + panic_io_port_read(); - first_addr = 0x3000; -#endif + /* Obtain current frame pointer */ +#if defined (__i386__) + __asm__ volatile("movl %%ebp, %0" : "=m" (stackptr)); +#elif defined (__x86_64__) + __asm__ volatile("movq %%rbp, %0" : "=m" (stackptr)); #endif - /* BIOS leaves data in low memory */ - last_addr = 1024*1024 + extmem*1024; + /* Print backtrace - callee is internally synchronized */ + panic_i386_backtrace(stackptr, ((panic_double_fault_cpu == cn) ? 80: 48), NULL, FALSE, NULL); - /* extended memory starts at 1MB */ - - bios_hole_size = 1024*1024 - trunc_page((vm_offset_t)(1024 * cnvmem)); + /* everything should be printed now so copy to NVRAM + */ - /* - * Initialize for pmap_free_pages and pmap_next_page. - * These guys should be page-aligned. - */ + if( debug_buf_size > 0) { + /* Optionally sync the panic log, if any, to NVRAM + * This is the default. + */ + if (commit_paniclog_to_nvram) { + unsigned int bufpos; + uintptr_t cr0; + + debug_putc(0); + + /* Now call the compressor */ + /* XXX Consider using the WKdm compressor in the + * future, rather than just packing - would need to + * be co-ordinated with crashreporter, which decodes + * this post-restart. The compressor should be + * capable of in-place compression. + */ + bufpos = packA(debug_buf, + (unsigned int) (debug_buf_ptr - debug_buf), debug_buf_size); + /* If compression was successful, + * use the compressed length + */ + pi_size = bufpos ? bufpos : (unsigned) (debug_buf_ptr - debug_buf); + + /* Save panic log to non-volatile store + * Panic info handler must truncate data that is + * too long for this platform. + * This call must save data synchronously, + * since we can subsequently halt the system. + */ + + +/* The following sequence is a workaround for: + * SnowLeopard10A67: AppleEFINVRAM should not invoke + * any routines that use floating point (MMX in this case) when saving panic + * logs to nvram/flash. + */ + cr0 = get_cr0(); + clear_ts(); + + kprintf("Attempting to commit panic log to NVRAM\n"); + pi_size = PESavePanicInfo((unsigned char *)debug_buf, + (uint32_t)pi_size ); + set_cr0(cr0); + + /* Uncompress in-place, to permit examination of + * the panic log by debuggers. + */ + + if (bufpos) { + unpackA(debug_buf, bufpos); + } + } + } + + /* If the user won't be able to read the dialog, + * don't bother trying to show it + */ + if (!PE_reboot_on_panic()) + draw_panic_dialog(); + + if (!panicDebugging) { + unsigned cnum; + /* Clear the MP rendezvous function lock, in the event + * that a panic occurred while in that codepath. + */ + mp_rendezvous_break_lock(); + if (PE_reboot_on_panic()) { + if (PE_halt_restart) + (*PE_halt_restart)(kPERestartCPU); + } + + /* Non-maskably interrupt all other processors + * If a restart timeout is specified, this processor + * will attempt a restart. + */ + kprintf("Invoking machine_halt_cpu on CPU %d\n", cn); + for (cnum = 0; cnum < real_ncpus; cnum++) { + if (cnum != (unsigned) cn) { + cpu_NMI_interrupt(cnum); + } + } + machine_halt_cpu(); + /* NOT REACHED */ + } + } - hole_start = trunc_page((vm_offset_t)(1024 * cnvmem)); - hole_end = round_page((vm_offset_t)first_avail); + __asm__("int3"); + hw_atomic_sub(&debug_mode, 1); +} - /* - * compute mem_size - */ +char * +machine_boot_info(char *buf, __unused vm_size_t size) +{ + *buf ='\0'; + return buf; +} - if (mem_size != 0) { - if (mem_size < (last_addr) - bios_hole_size) - last_addr = mem_size + bios_hole_size; - } +/* Routines for address - symbol translation. Not called unless the "keepsyms" + * boot-arg is supplied. + */ - first_addr = round_page(first_addr); - last_addr = trunc_page(last_addr); - mem_size = last_addr - bios_hole_size; +static int +panic_print_macho_symbol_name(kernel_mach_header_t *mh, vm_address_t search, const char *module_name) +{ + kernel_nlist_t *sym = NULL; + struct load_command *cmd; + kernel_segment_command_t *orig_ts = NULL, *orig_le = NULL; + struct symtab_command *orig_st = NULL; + unsigned int i; + char *strings, *bestsym = NULL; + vm_address_t bestaddr = 0, diff, curdiff; + + /* Assume that if it's loaded and linked into the kernel, it's a valid Mach-O */ + + cmd = (struct load_command *) &mh[1]; + for (i = 0; i < mh->ncmds; i++) { + if (cmd->cmd == LC_SEGMENT_KERNEL) { + kernel_segment_command_t *orig_sg = (kernel_segment_command_t *) cmd; + + if (strncmp(SEG_TEXT, orig_sg->segname, + sizeof(orig_sg->segname)) == 0) + orig_ts = orig_sg; + else if (strncmp(SEG_LINKEDIT, orig_sg->segname, + sizeof(orig_sg->segname)) == 0) + orig_le = orig_sg; + else if (strncmp("", orig_sg->segname, + sizeof(orig_sg->segname)) == 0) + orig_ts = orig_sg; /* pre-Lion i386 kexts have a single unnamed segment */ + } + else if (cmd->cmd == LC_SYMTAB) + orig_st = (struct symtab_command *) cmd; + + cmd = (struct load_command *) ((uintptr_t) cmd + cmd->cmdsize); + } + + if ((orig_ts == NULL) || (orig_st == NULL) || (orig_le == NULL)) + return 0; + + if ((search < orig_ts->vmaddr) || + (search >= orig_ts->vmaddr + orig_ts->vmsize)) { + /* search out of range for this mach header */ + return 0; + } + + sym = (kernel_nlist_t *)(uintptr_t)(orig_le->vmaddr + orig_st->symoff - orig_le->fileoff); + strings = (char *)(uintptr_t)(orig_le->vmaddr + orig_st->stroff - orig_le->fileoff); + diff = search; + + for (i = 0; i < orig_st->nsyms; i++) { + if (sym[i].n_type & N_STAB) continue; + + if (sym[i].n_value <= search) { + curdiff = search - (vm_address_t)sym[i].n_value; + if (curdiff < diff) { + diff = curdiff; + bestaddr = sym[i].n_value; + bestsym = strings + sym[i].n_un.n_strx; + } + } + } + + if (bestsym != NULL) { + if (diff != 0) { + kdb_printf("%s : %s + 0x%lx", module_name, bestsym, (unsigned long)diff); + } else { + kdb_printf("%s : %s", module_name, bestsym); + } + return 1; + } + return 0; +} - avail_start = first_addr; - avail_end = last_addr; - avail_next = avail_start; +extern kmod_info_t * kmod; /* the list of modules */ - /* - * Initialize kernel physical map, mapping the - * region from loadpt to avail_start. - * Kernel virtual address starts at VM_KERNEL_MIN_ADDRESS. - */ +static void +panic_print_kmod_symbol_name(vm_address_t search) +{ + u_int i; + + if (gLoadedKextSummaries == NULL) + return; + for (i = 0; i < gLoadedKextSummaries->numSummaries; ++i) { + OSKextLoadedKextSummary *summary = gLoadedKextSummaries->summaries + i; + + if ((search >= summary->address) && + (search < (summary->address + summary->size))) + { + kernel_mach_header_t *header = (kernel_mach_header_t *)(uintptr_t) summary->address; + if (panic_print_macho_symbol_name(header, search, summary->name) == 0) { + kdb_printf("%s + %llu", summary->name, (unsigned long)search - summary->address); + } + break; + } + } +} +static void +panic_print_symbol_name(vm_address_t search) +{ + /* try searching in the kernel */ + if (panic_print_macho_symbol_name(&_mh_execute_header, search, "mach_kernel") == 0) { + /* that failed, now try to search for the right kext */ + panic_print_kmod_symbol_name(search); + } +} -#if NCPUS > 1 && AT386 - /* - * Must Allocate interrupt stacks before kdb is called and also - * before vm is initialized. Must find out number of cpus first. - */ - /* - * Get number of cpus to boot, passed as an optional argument - * boot: mach [-sah#] # from 0 to 9 is the number of cpus to boot - */ - if (wncpu == -1) { - /* - * "-1" check above is to allow for old boot loader to pass - * wncpu through boothowto. New boot loader uses environment. +/* Generate a backtrace, given a frame pointer - this routine + * should walk the stack safely. The trace is appended to the panic log + * and conditionally, to the console. If the trace contains kernel module + * addresses, display the module name, load address and dependencies. + */ + +#define DUMPFRAMES 32 +#define PBT_TIMEOUT_CYCLES (5 * 1000 * 1000 * 1000ULL) +void +panic_i386_backtrace(void *_frame, int nframes, const char *msg, boolean_t regdump, x86_saved_state_t *regs) +{ + cframe_t *frame = (cframe_t *)_frame; + vm_offset_t raddrs[DUMPFRAMES]; + vm_offset_t PC = 0; + int frame_index; + volatile uint32_t *ppbtcnt = &pbtcnt; + uint64_t bt_tsc_timeout; + boolean_t keepsyms = FALSE; + int cn = cpu_number(); + + if(pbtcpu != cn) { + hw_atomic_add(&pbtcnt, 1); + /* Spin on print backtrace lock, which serializes output + * Continue anyway if a timeout occurs. */ - const char *cpus; - if ((cpus = getenv("cpus")) != NULL) { - /* only a single digit for now */ - if ((*cpus > '0') && (*cpus <= '9')) - wncpu = *cpus - '0'; - } else - wncpu = NCPUS; + hw_lock_to(&pbtlock, LockTimeOutTSC*2); + pbtcpu = cn; } - mp_probe_cpus(); - interrupt_stack_alloc(); -#endif /* NCPUS > 1 && AT386 */ + PE_parse_boot_argn("keepsyms", &keepsyms, sizeof (keepsyms)); - pmap_bootstrap(0); + if (msg != NULL) { + kdb_printf("%s", msg); + } - avail_remaining = atop((avail_end - avail_start) - - (hole_end - hole_start)); -} + if ((regdump == TRUE) && (regs != NULL)) { +#if defined(__x86_64__) + x86_saved_state64_t *ss64p = saved_state64(regs); + kdb_printf( + "RAX: 0x%016llx, RBX: 0x%016llx, RCX: 0x%016llx, RDX: 0x%016llx\n" + "RSP: 0x%016llx, RBP: 0x%016llx, RSI: 0x%016llx, RDI: 0x%016llx\n" + "R8: 0x%016llx, R9: 0x%016llx, R10: 0x%016llx, R11: 0x%016llx\n" + "R12: 0x%016llx, R13: 0x%016llx, R14: 0x%016llx, R15: 0x%016llx\n" + "RFL: 0x%016llx, RIP: 0x%016llx, CS: 0x%016llx, SS: 0x%016llx\n", + ss64p->rax, ss64p->rbx, ss64p->rcx, ss64p->rdx, + ss64p->isf.rsp, ss64p->rbp, ss64p->rsi, ss64p->rdi, + ss64p->r8, ss64p->r9, ss64p->r10, ss64p->r11, + ss64p->r12, ss64p->r13, ss64p->r14, ss64p->r15, + ss64p->isf.rflags, ss64p->isf.rip, ss64p->isf.cs, + ss64p->isf.ss); + PC = ss64p->isf.rip; +#else + x86_saved_state32_t *ss32p = saved_state32(regs); + kdb_printf( + "EAX: 0x%08x, EBX: 0x%08x, ECX: 0x%08x, EDX: 0x%08x\n" + "CR2: 0x%08x, EBP: 0x%08x, ESI: 0x%08x, EDI: 0x%08x\n" + "EFL: 0x%08x, EIP: 0x%08x, CS: 0x%08x, DS: 0x%08x\n", + ss32p->eax,ss32p->ebx,ss32p->ecx,ss32p->edx, + ss32p->cr2,ss32p->ebp,ss32p->esi,ss32p->edi, + ss32p->efl,ss32p->eip,ss32p->cs, ss32p->ds); + PC = ss32p->eip; +#endif + } -unsigned int -pmap_free_pages(void) -{ - return avail_remaining; -} + kdb_printf("Backtrace (CPU %d), " +#if PRINT_ARGS_FROM_STACK_FRAME + "Frame : Return Address (4 potential args on stack)\n", cn); +#else + "Frame : Return Address\n", cn); +#endif -boolean_t -pmap_next_page( - vm_offset_t *addrp) -{ - if (avail_next == avail_end) - return FALSE; + for (frame_index = 0; frame_index < nframes; frame_index++) { + vm_offset_t curframep = (vm_offset_t) frame; - /* skip the hole */ + if (!curframep) + break; - if (avail_next == hole_start) - avail_next = hole_end; + if (curframep & 0x3) { + kdb_printf("Unaligned frame\n"); + goto invalid; + } - *addrp = avail_next; - avail_next += PAGE_SIZE; - avail_remaining--; + if (!kvtophys(curframep) || + !kvtophys(curframep + sizeof(cframe_t) - 1)) { + kdb_printf("No mapping exists for frame pointer\n"); + goto invalid; + } - return TRUE; -} + kdb_printf("%p : 0x%lx ", frame, frame->caller); + if (frame_index < DUMPFRAMES) + raddrs[frame_index] = frame->caller; -boolean_t -pmap_valid_page( - vm_offset_t x) -{ - return ((avail_start <= x) && (x < avail_end)); -} - -/*XXX*/ -void fc_get(mach_timespec_t *ts); -#include -#include -extern kern_return_t sysclk_gettime( - mach_timespec_t *cur_time); -void fc_get(mach_timespec_t *ts) { - (void )sysclk_gettime(ts); -} +#if PRINT_ARGS_FROM_STACK_FRAME + if (kvtophys((vm_offset_t)&(frame->args[3]))) + kdb_printf("(0x%x 0x%x 0x%x 0x%x) ", + frame->args[0], frame->args[1], + frame->args[2], frame->args[3]); +#endif -void -Debugger( - const char *message) -{ - printf("Debugger called: <%s>\n", message); + /* Display address-symbol translation only if the "keepsyms" + * boot-arg is suppplied, since we unload LINKEDIT otherwise. + * This routine is potentially unsafe; also, function + * boundary identification is unreliable after a strip -x. + */ + if (keepsyms) + panic_print_symbol_name((vm_address_t)frame->caller); + + kdb_printf("\n"); - __asm__("int3"); -} + frame = frame->prev; + } -void -display_syscall(int syscall) -{ - printf("System call happened %d\n", syscall); -} + if (frame_index >= nframes) + kdb_printf("\tBacktrace continues...\n"); -#if XPR_DEBUG && (NCPUS == 1 || MP_V1_1) + goto out; -extern kern_return_t sysclk_gettime_interrupts_disabled( - mach_timespec_t *cur_time); +invalid: + kdb_printf("Backtrace terminated-invalid frame pointer %p\n",frame); +out: -int xpr_time(void) -{ - mach_timespec_t time; + /* Identify kernel modules in the backtrace and display their + * load addresses and dependencies. This routine should walk + * the kmod list safely. + */ + if (frame_index) + kmod_panic_dump((vm_offset_t *)&raddrs[0], frame_index); - sysclk_gettime_interrupts_disabled(&time); - return(time.tv_sec*1000000 + time.tv_nsec/1000); -} -#endif /* XPR_DEBUG && (NCPUS == 1 || MP_V1_1) */ + if (PC != 0) + kmod_panic_dump(&PC, 1); -enable_bluebox() -{ -} -disable_bluebox() -{ -} + panic_display_system_configuration(); -char * -machine_boot_info(char *buf, vm_size_t size) -{ - *buf ='\0'; - return buf; + /* Release print backtrace lock, to permit other callers in the + * event of panics on multiple processors. + */ + hw_lock_unlock(&pbtlock); + hw_atomic_sub(&pbtcnt, 1); + /* Wait for other processors to complete output + * Timeout and continue after PBT_TIMEOUT_CYCLES. + */ + bt_tsc_timeout = rdtsc64() + PBT_TIMEOUT_CYCLES; + while(*ppbtcnt && (rdtsc64() < bt_tsc_timeout)); } -