/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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.
+ *
+ * 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
* 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@
* Basic initialization for I386 - ISA bus machines.
*/
-#include <cpus.h>
#include <platforms.h>
-#include <mp_v1_1.h>
#include <mach_kdb.h>
-#include <himem.h>
-#include <fast_idle.h>
#include <mach/i386/vm_param.h>
#include <mach/vm_prot.h>
#include <mach/machine.h>
#include <mach/time_value.h>
-#include <kern/etap_macros.h>
#include <kern/spl.h>
#include <kern/assert.h>
#include <kern/debug.h>
#include <kern/misc_protos.h>
#include <kern/startup.h>
#include <kern/clock.h>
-#include <kern/time_out.h>
-#include <kern/xpr.h>
#include <kern/cpu_data.h>
-#include <vm/vm_page.h>
-#include <vm/pmap.h>
-#include <vm/vm_kern.h>
-#include <i386/fpu.h>
-#include <i386/pmap.h>
-#include <i386/ipl.h>
-#include <i386/pio.h>
+#include <kern/machine.h>
+#include <i386/postcode.h>
+#include <i386/mp_desc.h>
#include <i386/misc_protos.h>
+#include <i386/thread.h>
+#include <i386/trap.h>
+#include <i386/machine_routines.h>
+#include <i386/mp.h> /* mp_rendezvous_break_lock */
#include <i386/cpuid.h>
-#include <i386/rtclock_entries.h>
-#include <i386/AT386/mp/mp.h>
+#include <i386/fpu.h>
+#include <i386/machine_cpu.h>
+#include <i386/pmap.h>
+#if CONFIG_MTRR
+#include <i386/mtrr.h>
+#endif
+#include <i386/ucode.h>
+#include <i386/pmCPU.h>
+#include <architecture/i386/pio.h> /* inb() */
+#include <pexpert/i386/boot.h>
#if MACH_KDB
#include <ddb/db_aout.h>
#endif /* MACH_KDB */
-#include <ddb/tr.h>
-#ifdef __MACHO__
-#include <i386/AT386/kernBootStruct.h>
-#include <mach/boot_info.h>
-#include <mach/thread_status.h>
-#endif
-
-#if NCPUS > 1
-#include <i386/mp_desc.h>
-#endif /* NCPUS */
-#if MP_V1_1
-#include <i386/AT386/mp/mp_v1_1.h>
-#endif /* MP_V1_1 */
+#include <vm/pmap.h>
+#include <vm/vm_map.h>
+#include <vm/vm_kern.h>
#include <IOKit/IOPlatformExpert.h>
+#include <IOKit/IOHibernatePrivate.h>
-vm_size_t mem_size = 0;
-uint64_t max_mem;
-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 <pexpert/i386/efi.h>
-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 <kern/thread.h>
+#include <mach-o/loader.h>
+#include <mach-o/nlist.h>
-/* parameters passed from bootstrap loader */
-int cnvmem = 0; /* must be in .data section */
-int extmem = 0;
+#include <libkern/kernel_mach_header.h>
+#include <libkern/OSKextLibPrivate.h>
-/* FIXME!! REMOVE WHEN OSFMK DEVICES ARE COMPLETELY PULLED OUT */
-int dev_name_count = 0;
-int dev_name_list = 0;
+#define DPRINTF(x...)
+//#define DPRINTF(x...) kprintf(x)
-#ifndef __MACHO__
-extern char edata, end;
-#endif
+static void machine_conf(void);
-extern char version[];
+extern int default_preemption_rate;
+extern int max_unsafe_quanta;
+extern int max_poll_quanta;
+extern unsigned int panic_is_inited;
-void parse_arguments(void);
-const char *getenv(const char *);
+int db_run_mode;
-#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;
+volatile int pbtcpu = -1;
+hw_lock_data_t pbtlock; /* backtrace print lock */
+uint32_t pbtcnt = 0;
-#if __MACHO__
-#include <mach-o/loader.h>
-vm_offset_t edata, etext, end;
+volatile int panic_double_fault_cpu = -1;
-extern struct mach_header _mh_execute_header;
-void *sectTEXTB; int sectSizeTEXT;
-void *sectDATAB; int sectSizeDATA;
-void *sectOBJCB; int sectSizeOBJC;
-void *sectLINKB; int sectSizeLINK;
-
-/* 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.
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_feature_display("CPU features", 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();
}
/*
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:
+ * <rdar://problem/5915669> 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;
- max_mem = mem_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 <kern/clock.h>
-#include <i386/rtclock_entries.h>
-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));
}
-
projects / apple / xnu.git / blobdiff