#include <mach/i386/vm_param.h>
#include <string.h>
#include <mach/vm_param.h>
#include <mach/vm_prot.h>
#include <mach/machine.h>
#include <mach/time_value.h>
#include <sys/kdebug.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/cpu_data.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>
#include <i386/cpuid.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 <i386/panic_hooks.h>
#include <architecture/i386/pio.h>
#include <pexpert/i386/boot.h>
#include <kdp/kdp_dyld.h>
#include <kdp/kdp_core.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#include <IOKit/IOPlatformExpert.h>
#include <IOKit/IOHibernatePrivate.h>
#include <pexpert/i386/efi.h>
#include <kern/thread.h>
#include <kern/sched.h>
#include <mach-o/loader.h>
#include <mach-o/nlist.h>
#include <libkern/kernel_mach_header.h>
#include <libkern/OSKextLibPrivate.h>
#include <mach/branch_predicates.h>
#if DEBUG
#define DPRINTF(x...) kprintf(x)
#else
#define DPRINTF(x...)
#endif
static void machine_conf(void);
void panic_print_symbol_name(vm_address_t search);
extern const char version[];
extern char osversion[];
extern int max_unsafe_quanta;
extern int max_poll_quanta;
extern unsigned int panic_is_inited;
extern int proc_pid(void *p);
#define FP_ALIGNMENT_MASK ((uint32_t)(0x3))
#define FP_LR_OFFSET ((uint32_t)4)
#define FP_LR_OFFSET64 ((uint32_t)8)
#define FP_MAX_NUM_TO_EVALUATE (50)
int db_run_mode;
volatile int pbtcpu = -1;
hw_lock_data_t pbtlock;
uint32_t pbtcnt = 0;
volatile int panic_double_fault_cpu = -1;
#define PRINT_ARGS_FROM_STACK_FRAME 0
typedef struct _cframe_t {
struct _cframe_t *prev;
uintptr_t caller;
#if PRINT_ARGS_FROM_STACK_FRAME
unsigned args[0];
#endif
} cframe_t;
static unsigned panic_io_port;
static unsigned commit_paniclog_to_nvram;
unsigned int debug_boot_arg;
void
print_one_backtrace(pmap_t pmap, vm_offset_t topfp, const char *cur_marker,
boolean_t is_64_bit, boolean_t nvram_format)
{
int i = 0;
addr64_t lr;
addr64_t fp;
addr64_t fp_for_ppn;
ppnum_t ppn;
boolean_t dump_kernel_stack;
fp = topfp;
fp_for_ppn = 0;
ppn = (ppnum_t)NULL;
if (fp >= VM_MIN_KERNEL_ADDRESS)
dump_kernel_stack = TRUE;
else
dump_kernel_stack = FALSE;
do {
if ((fp == 0) || ((fp & FP_ALIGNMENT_MASK) != 0))
break;
if (dump_kernel_stack && ((fp < VM_MIN_KERNEL_ADDRESS) || (fp > VM_MAX_KERNEL_ADDRESS)))
break;
if ((!dump_kernel_stack) && (fp >=VM_MIN_KERNEL_ADDRESS))
break;
if ((((fp + FP_LR_OFFSET) ^ fp_for_ppn) >> PAGE_SHIFT) != 0x0U) {
ppn = pmap_find_phys(pmap, fp + FP_LR_OFFSET);
fp_for_ppn = fp + (is_64_bit ? FP_LR_OFFSET64 : FP_LR_OFFSET);
}
if (ppn != (ppnum_t)NULL) {
if (is_64_bit) {
lr = ml_phys_read_double_64(((((vm_offset_t)ppn) << PAGE_SHIFT)) | ((fp + FP_LR_OFFSET64) & PAGE_MASK));
} else {
lr = ml_phys_read_word(((((vm_offset_t)ppn) << PAGE_SHIFT)) | ((fp + FP_LR_OFFSET) & PAGE_MASK));
}
} else {
if (is_64_bit) {
kdb_printf("%s\t Could not read LR from frame at 0x%016llx\n", cur_marker, fp + FP_LR_OFFSET64);
} else {
kdb_printf("%s\t Could not read LR from frame at 0x%08x\n", cur_marker, (uint32_t)(fp + FP_LR_OFFSET));
}
break;
}
if (((fp ^ fp_for_ppn) >> PAGE_SHIFT) != 0x0U) {
ppn = pmap_find_phys(pmap, fp);
fp_for_ppn = fp;
}
if (ppn != (ppnum_t)NULL) {
if (is_64_bit) {
fp = ml_phys_read_double_64(((((vm_offset_t)ppn) << PAGE_SHIFT)) | (fp & PAGE_MASK));
} else {
fp = ml_phys_read_word(((((vm_offset_t)ppn) << PAGE_SHIFT)) | (fp & PAGE_MASK));
}
} else {
if (is_64_bit) {
kdb_printf("%s\t Could not read FP from frame at 0x%016llx\n", cur_marker, fp);
} else {
kdb_printf("%s\t Could not read FP from frame at 0x%08x\n", cur_marker, (uint32_t)fp);
}
break;
}
if (nvram_format) {
if (is_64_bit) {
kdb_printf("%s\t0x%016llx\n", cur_marker, lr);
} else {
kdb_printf("%s\t0x%08x\n", cur_marker, (uint32_t)lr);
}
} else {
if (is_64_bit) {
kdb_printf("%s\t lr: 0x%016llx fp: 0x%016llx\n", cur_marker, lr, fp);
} else {
kdb_printf("%s\t lr: 0x%08x fp: 0x%08x\n", cur_marker, (uint32_t)lr, (uint32_t)fp);
}
}
} while ((++i < FP_MAX_NUM_TO_EVALUATE) && (fp != topfp));
}
void
machine_startup(void)
{
int boot_arg;
#if 0
if( PE_get_hotkey( kPEControlKey ))
halt_in_debugger = halt_in_debugger ? 0 : 1;
#endif
if (PE_parse_boot_argn("debug", &debug_boot_arg, sizeof (debug_boot_arg))) {
panicDebugging = TRUE;
#if DEVELOPMENT || DEBUG
if (debug_boot_arg & DB_HALT) halt_in_debugger=1;
#endif
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;
#if KDEBUG_MOJO_TRACE
if (debug_boot_arg & DB_PRT_KDEBUG) {
kdebug_serial = TRUE;
disable_debug_output = FALSE;
}
#endif
} else {
debug_boot_arg = 0;
}
if (!PE_parse_boot_argn("nvram_paniclog", &commit_paniclog_to_nvram, sizeof (commit_paniclog_to_nvram)))
commit_paniclog_to_nvram = 1;
if (PE_parse_boot_argn("pmsafe_debug", &boot_arg, sizeof (boot_arg)))
pmsafe_debug = boot_arg;
#if NOTYET
hw_lock_init(&debugger_lock);
#endif
hw_lock_init(&pbtlock);
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;
}
if (PE_parse_boot_argn("panic_io_port", &boot_arg, sizeof (boot_arg))) {
panic_io_port = boot_arg & 0xffff;
}
machine_conf();
panic_hooks_init();
kernel_bootstrap();
}
static void
machine_conf(void)
{
machine_info.memory_size = (typeof(machine_info.memory_size))mem_size;
}
extern void *gPEEFIRuntimeServices;
extern void *gPEEFISystemTable;
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)
{
const uint8_t *p;
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;
}
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(system_table->RuntimeServices == 0) {
kprintf("No runtime table present\n");
break;
}
DPRINTF("RuntimeServices table at 0x%qx\n", system_table->RuntimeServices);
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;
}
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);
}
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;
}
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);
runtime = (EFI_RUNTIME_SERVICES_32 *)
(system_table->RuntimeServices | VM_MIN_KERNEL_ADDRESS);
DPRINTF("Runtime table addressed at %p\n", runtime);
if (runtime->Hdr.Signature != EFI_RUNTIME_SERVICES_SIGNATURE) {
kprintf("Bad EFI runtime table signature\n");
break;
}
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);
}
static void
efi_init(void)
{
boot_args *args = (boot_args *)PE_state.bootArgs;
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;
if (vm_addr < VM_MIN_KERNEL_ADDRESS)
vm_addr |= VM_MIN_KERNEL_ADDRESS;
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_bd(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);
DPRINTF("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;
}
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;
if (vm_addr < VM_MIN_KERNEL_ADDRESS)
vm_addr |= VM_MIN_KERNEL_ADDRESS;
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;
if (vm_addr < VM_MIN_KERNEL_ADDRESS)
vm_addr |= VM_MIN_KERNEL_ADDRESS;
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;
}
void
machine_init(void)
{
cpu_data_realloc();
debug_log_init();
cpuid_cpu_display("CPU identification");
cpuid_feature_display("CPU features");
cpuid_extfeature_display("CPU extended features");
efi_init();
smp_init();
init_fpu();
clock_config();
#if CONFIG_MTRR
mtrr_init();
pat_init();
#endif
pmap_lowmem_finalize();
}
void
halt_cpu(void)
{
halt_all_cpus(FALSE);
}
int reset_mem_on_reboot = 1;
__attribute__((noreturn))
void
halt_all_cpus(boolean_t reboot)
{
if (reboot) {
printf("MACH Reboot\n");
PEHaltRestart( kPERestartCPU );
} else {
printf("CPU halted\n");
PEHaltRestart( kPEHaltCPU );
}
while(1);
}
void
panic_io_port_read(void) {
if (panic_io_port)
(void)inb(panic_io_port);
}
uint64_t panic_restart_timeout = ~(0ULL);
#define PANIC_RESTART_TIMEOUT (3ULL * NSEC_PER_SEC)
static void
machine_halt_cpu(void) {
uint64_t deadline;
panic_io_port_read();
if (!PE_reboot_on_panic() && panic_restart_timeout == ~(0ULL)) {
pmCPUHalt(PM_HALT_DEBUG);
return;
}
if (PE_reboot_on_panic())
deadline = mach_absolute_time() + PANIC_RESTART_TIMEOUT;
else
deadline = mach_absolute_time() + panic_restart_timeout;
while (mach_absolute_time() < deadline)
cpu_pause();
kprintf("Invoking PE_halt_restart\n");
if (PE_halt_restart)
(*PE_halt_restart)(kPERestartCPU);
pmCPUHalt(PM_HALT_DEBUG);
}
static int pid_from_task(task_t task)
{
int pid = -1;
if (task->bsd_info)
pid = proc_pid(task->bsd_info);
return pid;
}
void
DebuggerWithContext(
__unused unsigned int reason,
__unused void *ctx,
const char *message,
uint64_t debugger_options_mask)
{
if (debugger_options_mask != DEBUGGER_OPTION_NONE) {
kprintf("debugger options (%llx) not supported for desktop.\n", debugger_options_mask);
}
Debugger(message);
}
void
Debugger(
const char *message)
{
unsigned long pi_size = 0;
void *stackptr;
int cn = cpu_number();
boolean_t old_doprnt_hide_pointers = doprnt_hide_pointers;
hw_atomic_add(&debug_mode, 1);
if (!panic_is_inited) {
postcode(PANIC_HLT);
asm("hlt");
}
doprnt_hide_pointers = FALSE;
printf("Debugger called: <%s>\n", message);
kprintf("Debugger called: <%s>\n", message);
if (panicstr) {
disable_preemption();
panic_io_port_read();
__asm__ volatile("movq %%rbp, %0" : "=m" (stackptr));
if (strncmp(panicstr, LAUNCHD_CRASHED_PREFIX, strlen(LAUNCHD_CRASHED_PREFIX)) == 0) {
print_launchd_info();
} else {
panic_i386_backtrace(stackptr, ((panic_double_fault_cpu == cn) ? 80: 48), NULL, FALSE, NULL);
}
if( debug_buf_size > 0) {
if (commit_paniclog_to_nvram) {
unsigned int bufpos;
uintptr_t cr0;
debug_putc(0);
bufpos = packA(debug_buf,
(unsigned int) (debug_buf_ptr - debug_buf), debug_buf_size);
pi_size = bufpos ? bufpos : (unsigned) (debug_buf_ptr - debug_buf);
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);
if (bufpos) {
unpackA(debug_buf, bufpos);
}
}
}
if (!panicDebugging && !kdp_has_polled_corefile()) {
unsigned cnum;
mp_rendezvous_break_lock();
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();
}
}
doprnt_hide_pointers = old_doprnt_hide_pointers;
__asm__("int3");
hw_atomic_sub(&debug_mode, 1);
}
char *
machine_boot_info(char *buf, __unused vm_size_t size)
{
*buf ='\0';
return buf;
}
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;
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;
}
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)) {
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;
}
extern kmod_info_t * kmod;
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;
}
}
}
void
panic_print_symbol_name(vm_address_t search)
{
if (panic_print_macho_symbol_name(&_mh_execute_header, search, "mach_kernel") == 0) {
panic_print_kmod_symbol_name(search);
}
}
#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();
boolean_t old_doprnt_hide_pointers = doprnt_hide_pointers;
if(pbtcpu != cn) {
hw_atomic_add(&pbtcnt, 1);
hw_lock_to(&pbtlock, ~0U);
pbtcpu = cn;
}
if (__improbable(doprnt_hide_pointers == TRUE)) {
doprnt_hide_pointers = FALSE;
}
panic_check_hook();
PE_parse_boot_argn("keepsyms", &keepsyms, sizeof (keepsyms));
if (msg != NULL) {
kdb_printf("%s", msg);
}
if ((regdump == TRUE) && (regs != NULL)) {
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;
}
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
for (frame_index = 0; frame_index < nframes; frame_index++) {
vm_offset_t curframep = (vm_offset_t) frame;
if (!curframep)
break;
if (curframep & 0x3) {
kdb_printf("Unaligned frame\n");
goto invalid;
}
if (!kvtophys(curframep) ||
!kvtophys(curframep + sizeof(cframe_t) - 1)) {
kdb_printf("No mapping exists for frame pointer\n");
goto invalid;
}
kdb_printf("%p : 0x%lx ", frame, frame->caller);
if (frame_index < DUMPFRAMES)
raddrs[frame_index] = frame->caller;
#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
if (keepsyms)
panic_print_symbol_name((vm_address_t)frame->caller);
kdb_printf("\n");
frame = frame->prev;
}
if (frame_index >= nframes)
kdb_printf("\tBacktrace continues...\n");
goto out;
invalid:
kdb_printf("Backtrace terminated-invalid frame pointer %p\n",frame);
out:
if (frame_index)
kmod_panic_dump((vm_offset_t *)&raddrs[0], frame_index);
if (PC != 0)
kmod_panic_dump(&PC, 1);
panic_display_system_configuration(FALSE);
doprnt_hide_pointers = old_doprnt_hide_pointers;
hw_lock_unlock(&pbtlock);
hw_atomic_sub(&pbtcnt, 1);
bt_tsc_timeout = rdtsc64() + PBT_TIMEOUT_CYCLES;
while(*ppbtcnt && (rdtsc64() < bt_tsc_timeout));
}
static boolean_t
debug_copyin(pmap_t p, uint64_t uaddr, void *dest, size_t size)
{
size_t rem = size;
char *kvaddr = dest;
while (rem) {
ppnum_t upn = pmap_find_phys(p, uaddr);
uint64_t phys_src = ptoa_64(upn) | (uaddr & PAGE_MASK);
uint64_t phys_dest = kvtophys((vm_offset_t)kvaddr);
uint64_t src_rem = PAGE_SIZE - (phys_src & PAGE_MASK);
uint64_t dst_rem = PAGE_SIZE - (phys_dest & PAGE_MASK);
size_t cur_size = (uint32_t) MIN(src_rem, dst_rem);
cur_size = MIN(cur_size, rem);
if (upn && pmap_valid_page(upn) && phys_dest) {
bcopy_phys(phys_src, phys_dest, cur_size);
}
else
break;
uaddr += cur_size;
kvaddr += cur_size;
rem -= cur_size;
}
return (rem == 0);
}
void
print_threads_registers(thread_t thread)
{
x86_saved_state_t *savestate;
savestate = get_user_regs(thread);
kdb_printf(
"\nRAX: 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\n",
savestate->ss_64.rax, savestate->ss_64.rbx, savestate->ss_64.rcx, savestate->ss_64.rdx,
savestate->ss_64.isf.rsp, savestate->ss_64.rbp, savestate->ss_64.rsi, savestate->ss_64.rdi,
savestate->ss_64.r8, savestate->ss_64.r9, savestate->ss_64.r10, savestate->ss_64.r11,
savestate->ss_64.r12, savestate->ss_64.r13, savestate->ss_64.r14, savestate->ss_64.r15,
savestate->ss_64.isf.rflags, savestate->ss_64.isf.rip, savestate->ss_64.isf.cs,
savestate->ss_64.isf.ss);
}
void
print_tasks_user_threads(task_t task)
{
thread_t thread = current_thread();
x86_saved_state_t *savestate;
pmap_t pmap = 0;
uint64_t rbp;
const char *cur_marker = 0;
int j;
for (j = 0, thread = (thread_t) queue_first(&task->threads); j < task->thread_count;
++j, thread = (thread_t) queue_next(&thread->task_threads)) {
kdb_printf("Thread %d: %p\n", j, thread);
pmap = get_task_pmap(task);
savestate = get_user_regs(thread);
rbp = savestate->ss_64.rbp;
kdb_printf("\t0x%016llx\n", savestate->ss_64.isf.rip);
print_one_backtrace(pmap, (vm_offset_t)rbp, cur_marker, TRUE, TRUE);
kdb_printf("\n");
}
}
void
print_thread_num_that_crashed(task_t task)
{
thread_t c_thread = current_thread();
thread_t thread;
int j;
for (j = 0, thread = (thread_t) queue_first(&task->threads); j < task->thread_count;
++j, thread = (thread_t) queue_next(&thread->task_threads)) {
if (c_thread == thread) {
kdb_printf("\nThread %d crashed\n", j);
break;
}
}
}
#define PANICLOG_UUID_BUF_SIZE 256
void print_uuid_info(task_t task)
{
uint32_t uuid_info_count = 0;
mach_vm_address_t uuid_info_addr = 0;
boolean_t have_map = (task->map != NULL) && (ml_validate_nofault((vm_offset_t)(task->map), sizeof(struct _vm_map)));
boolean_t have_pmap = have_map && (task->map->pmap != NULL) && (ml_validate_nofault((vm_offset_t)(task->map->pmap), sizeof(struct pmap)));
int task_pid = pid_from_task(task);
char uuidbuf[PANICLOG_UUID_BUF_SIZE] = {0};
char *uuidbufptr = uuidbuf;
uint32_t k;
if (have_pmap && task->active && task_pid > 0) {
struct user64_dyld_all_image_infos task_image_infos;
if (debug_copyin(task->map->pmap, task->all_image_info_addr,
&task_image_infos, sizeof(struct user64_dyld_all_image_infos))) {
uuid_info_count = (uint32_t)task_image_infos.uuidArrayCount;
uuid_info_addr = task_image_infos.uuidArray;
}
if (!uuid_info_addr) {
uuid_info_count = 0;
}
}
if (task_pid > 0 && uuid_info_count > 0) {
uint32_t uuid_info_size = sizeof(struct user64_dyld_uuid_info);
uint32_t uuid_array_size = uuid_info_count * uuid_info_size;
uint32_t uuid_copy_size = 0;
uint32_t uuid_image_count = 0;
char *current_uuid_buffer = NULL;
kdb_printf("\nuuid info:\n");
while (uuid_array_size) {
if (uuid_array_size <= PANICLOG_UUID_BUF_SIZE) {
uuid_copy_size = uuid_array_size;
uuid_image_count = uuid_array_size/uuid_info_size;
} else {
uuid_image_count = PANICLOG_UUID_BUF_SIZE/uuid_info_size;
uuid_copy_size = uuid_image_count * uuid_info_size;
}
if (have_pmap && !debug_copyin(task->map->pmap, uuid_info_addr, uuidbufptr,
uuid_copy_size)) {
kdb_printf("Error!! Failed to copy UUID info for task %p pid %d\n", task, task_pid);
uuid_image_count = 0;
break;
}
if (uuid_image_count > 0) {
current_uuid_buffer = uuidbufptr;
for (k = 0; k < uuid_image_count; k++) {
kdb_printf(" %#llx", *(uint64_t *)current_uuid_buffer);
current_uuid_buffer += sizeof(uint64_t);
uint8_t *uuid = (uint8_t *)current_uuid_buffer;
kdb_printf("\tuuid = <%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x>\n",
uuid[0], uuid[1], uuid[2], uuid[3], uuid[4], uuid[5], uuid[6], uuid[7], uuid[8],
uuid[9], uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15]);
current_uuid_buffer += 16;
}
bzero(&uuidbuf, sizeof(uuidbuf));
}
uuid_info_addr += uuid_copy_size;
uuid_array_size -= uuid_copy_size;
}
}
}
void print_launchd_info(void)
{
task_t task = current_task();
thread_t thread = current_thread();
volatile uint32_t *ppbtcnt = &pbtcnt;
uint64_t bt_tsc_timeout;
int cn = cpu_number();
if(pbtcpu != cn) {
hw_atomic_add(&pbtcnt, 1);
hw_lock_to(&pbtlock, ~0U);
pbtcpu = cn;
}
print_uuid_info(task);
print_thread_num_that_crashed(task);
print_threads_registers(thread);
print_tasks_user_threads(task);
panic_display_system_configuration(TRUE);
hw_lock_unlock(&pbtlock);
hw_atomic_sub(&pbtcnt, 1);
bt_tsc_timeout = rdtsc64() + PBT_TIMEOUT_CYCLES;
while(*ppbtcnt && (rdtsc64() < bt_tsc_timeout));
}