void boot(int biosdev)
{
zeroBSS();
mallocInit(0, 0, 0, mallocError);
#if MUST_ENABLE_A20
// Enable A20 gate before accessing memory above 1 MB.
if (fastEnableA20() != 0)
{
enableA20(); // Fast enable failed. Try legacy method.
}
#endif
bool haveCABootPlist = false;
bool quietBootMode = true;
void *fileLoadBuffer = (void *)kLoadAddr;
char bootFile[256];
char rootUUID[37];
char * kernelFlags = NULL;
const char * val;
int length = 0;
int kernelFlagsLength = 0;
bootFile[0] = '\0';
rootUUID[0] = '\0';
#if PRE_LINKED_KERNEL_SUPPORT
bool mayUseKernelCache = false;
long flags, cachetime;
#endif
initPlatform(biosdev); // Passing on the boot drive.
#if DEBUG_STATE_ENABLED
// Don't switch graphics mode / show boot logo when DEBUG is set to 1.
printf("\ngArchCPUType (CPU): %s\n", (gArchCPUType == CPU_TYPE_X86_64) ? "x86_64" : "i386");
sleep(3); // Silent sleep.
#else
showBootLogo();
#endif
// A bit ugly maybe, but this will be changed sometime soon.
while (readKeyboardStatus())
{
int key = (bgetc() & 0xff);
if ((key |= 0x20) == 'r')
{
gPlatform.BootRecoveryHD = true;
}
}
initPartitionChain();
#define loadCABootPlist() loadSystemConfig(&bootInfo->bootConfig)
// Loading: /Library/Preferences/SystemConfiguration/com.apple.Boot.plist
// TODO: Check if everything works <i>without</i> having this plist.
if (loadCABootPlist() == STATE_SUCCESS)
{
_BOOT_DEBUG_DUMP("com.apple.Boot.plist located.\n");
// Load successful. Change state accordantly.
haveCABootPlist = true; // Checked <i>before</i> calling key functions.
// Check the value of <key>Kernel Flags</key> for stuff we are interested in.
// Note: We need to know about: arch= and the boot flags: -s, -v, -f and -x
if (getValueForKey(kKernelFlagsKey, &val, &kernelFlagsLength, &bootInfo->bootConfig))
{
// "Kernel Flags" key found. Check length to see if we have anything to work with.
if (kernelFlagsLength)
{
kernelFlagsLength++;
// Yes. Allocate memory for it and copy the kernel flags into it.
kernelFlags = malloc(kernelFlagsLength);
strlcpy(kernelFlags, val, kernelFlagsLength);
// Is 'arch=<i386/x86_64>' specified as kernel flag?
if (getValueForBootKey(kernelFlags, "arch", &val, &length)) // && len >= 4)
{
gArchCPUType = (strncmp(val, "x86_64", 6) == 0) ? CPU_TYPE_X86_64 : CPU_TYPE_I386;
_BOOT_DEBUG_DUMP("gArchCPUType (c.a.B.plist): %s\n", (gArchCPUType == CPU_TYPE_X86_64) ? "x86_64" : "i386");
}
// Check for -v (verbose) and -s (single user mode) flags.
gVerboseMode = getValueForBootKey(kernelFlags, kVerboseModeFlag, &val, &length) ||
getValueForBootKey(kernelFlags, kSingleUserModeFlag, &val, &length);
if (gVerboseMode)
{
#if DEBUG_BOOT == false
setVideoMode(VGA_TEXT_MODE);
#endif
}
// Check for -x (safe) and -f (flush cache) flags.
if (getValueForBootKey(kernelFlags, kSafeModeFlag, &val, &length) ||
getValueForBootKey(kernelFlags, kIgnoreCachesFlag, &val, &length))
{
gBootMode = kBootModeSafe;
}
// Is 'boot-uuid=<value>' specified as kernel flag?
if (getValueForBootKey(kernelFlags, kBootUUIDKey, &val, &length) && length == 36)
{
_BOOT_DEBUG_DUMP("Target boot-uuid=<%s>\n", val);
// Yes. Copy its value into rootUUID.
strlcpy(rootUUID, val, 37);
}
/* else
{
strlcpy(rootUUID, "3453E0E5-017B-38AD-A0AA-D0BBD8565D6", 37);
_BOOT_DEBUG_DUMP("Target boot-uuid=<%s>\n", rootUUID);
} */
}
}
#if PRE_LINKED_KERNEL_SUPPORT
/* Look for 'Kernel Cache' key. */
if (getValueForKey(kKernelCacheKey, &val, &length, &bootInfo->bootConfig))
{
_BOOT_DEBUG_DUMP("Kernel Cache set to: %s\n", val);
// Key found. Check if the given filepath/name exists.
if (length && GetFileInfo(NULL, val, &flags, &cachetime) == 0)
{
// File located. Init kernelCacheFile so that we can use it as boot file.
gPlatform.KernelCachePath = strdup(val);
// Set flag to inform the load process to skip parts of the code.
gPlatform.KernelCacheSpecified = true;
_BOOT_DEBUG_DUMP("kernelcache file found.\n");
}
_BOOT_DEBUG_ELSE_DUMP("Error: kernelcache file not found.\n");
}
// _BOOT_DEBUG_ELSE_DUMP("No 'Kernel Cache' key given.\n");
#endif
/* Enable touching of a single BIOS device by setting 'Scan Single Drive' to yes.
if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive)
{
gScanSingleDrive = true;
} */
}
else
{
_BOOT_DEBUG_DUMP("No com.apple.Boot.plist found.\n");
}
// Was a target drive (per UUID) specified in com.apple.Boot.plist?
if (rootUUID[0] == '\0')
{
_BOOT_DEBUG_DUMP("No UUID specified in com.apple.Boot.plist\n");
// No, so are we booting from a System Volume?
if (gPlatform.BootVolume->flags & kBVFlagSystemVolume)
{
_BOOT_DEBUG_DUMP("Booting from a System Volume, getting UUID.\n");
// Yes, then let's get the UUID.
if (HFSGetUUID(gPlatform.BootVolume, rootUUID) == STATE_SUCCESS)
{
_BOOT_DEBUG_DUMP("Success [%s]\n", rootUUID);
}
}
else // Booting from USB-stick or SDboot media.
{
_BOOT_DEBUG_DUMP("Booting from a Non System Volume, getting UUID.\n");
// Get target System Volume and UUID in one go.
BVRef rootVolume = getTargetRootVolume(rootUUID);
if (rootVolume)
{
_BOOT_DEBUG_DUMP("Success [%s]\n", rootUUID);
gPlatform.RootVolume = rootVolume;
}
}
// This should never happen, but just to be sure.
if (rootUUID[0] == '\0')
{
_BOOT_DEBUG_DUMP("Failed to get UUID for System Volume.\n");
if (!gVerboseMode)
{
// Force verbose mode when we didn't find a UUID, so
// that people see what is going on in times of trouble.
gVerboseMode = true;
}
}
}
/*
* At this stage we know exactly what boot mode we're in, and which disk to boot from
* any of which may or may not have been set/changed (in com.apple.Boot.plist) into a
* non-default system setting and thus is this the place to update our EFI tree.
*/
updateEFITree(rootUUID);
if (haveCABootPlist) // Check boolean before doing more time consuming tasks.
{
if (getBoolForKey(kQuietBootKey, &quietBootMode, &bootInfo->bootConfig) && !quietBootMode)
{
gBootMode = kBootModeNormal; // Reversed from: gBootMode |= kBootModeQuiet;
}
}
// Parse args, load and start kernel.
while (1)
{
// Initialize globals.
sysConfigValid = 0;
gErrors = 0;
int retStatus = -1;
getAndProcessBootArguments(kernelFlags);
// Initialize bootFile (defaults to: mach_kernel).
strcpy(bootFile, bootInfo->bootFile);
#if PRE_LINKED_KERNEL_SUPPORT
_BOOT_DEBUG_DUMP("gBootMode = %d\n", gBootMode);
// Preliminary checks to prevent us from doing useless things.
mayUseKernelCache = ((gBootMode & kBootModeSafe) == 0);
_BOOT_DEBUG_DUMP("mayUseKernelCache = %s\n", mayUseKernelCache ? "true" : "false");
/*
* A pre-linked kernel, or kernelcache, requires you to have all essential kexts for your
* configuration, including FakeSMC.kext in: /System/Library/Extensions/
* Not in /Extra/Extensions/ because this directory will be ignored, completely when a
* pre-linked kernel or kernelcache is used!
*
* Note: Not following this word of advise will render your system incapable of booting!
*/
if (mayUseKernelCache == false)
{
_BOOT_DEBUG_DUMP("Warning: kernelcache will be ignored!\n");
// True when 'Kernel Cache' is set in com.apple.Boot.plist
if (gPlatform.KernelCacheSpecified == true)
{
sprintf(bootFile, "%s", bootInfo->bootFile);
}
}
else
{
// True when 'Kernel Cache' is set in com.apple.Boot.plist
if (gPlatform.KernelCacheSpecified == true)
{
_BOOT_DEBUG_DUMP("kernelcache: %s\n", gPlatform.KernelCachePath);
/*
* Starting with Lion, we can take a shortcut by simply pointing
* the 'bootFile' to the kernel cache and we are done.
*/
sprintf(bootFile, "%s", gPlatform.KernelCachePath);
}
/*
* We might have been fired up from a USB thumbdrive (kickstart boot) and
* thus we have to check the kernel cache path first (might not be there).
*/
else if (GetFileInfo(NULL, gPlatform.KernelCachePath, &flags, &cachetime) == 0)
{
#if ((MAKE_TARGET_OS & LION) == LION) // Also for Mountain Lion, which has bit 2 set like Lion.
_BOOT_DEBUG_DUMP("Checking for kernelcache...\n");
if (GetFileInfo(gPlatform.KernelCachePath, (char *)kKernelCache, &flags, &cachetime) == 0)
{
sprintf(bootFile, "%s/%s", gPlatform.KernelCachePath, kKernelCache);
_BOOT_DEBUG_DUMP("Kernelcache located.\n");
}
_BOOT_DEBUG_ELSE_DUMP("Failed to locate the kernelcache. Will load: %s!\n", bootInfo->bootFile);
}
_BOOT_DEBUG_ELSE_DUMP("Failed to locate the kernelcache (directory)!\n");
}
#else // Not for (Mountain) Lion, go easy with the Snow Leopard.
static char preLinkedKernelPath[128];
static char adler32Key[PLATFORM_NAME_LEN + ROOT_PATH_LEN];
unsigned long adler32 = 0;
preLinkedKernelPath[0] = '\0';
_BOOT_DEBUG_DUMP("Checking for pre-linked kernel...\n");
// Zero out platform info (name and kernel root path).
bzero(adler32Key, sizeof(adler32Key));
// Construct key for the pre-linked kernel checksum (generated by adler32).
sprintf(adler32Key, gPlatform.ModelID);
sprintf(adler32Key + PLATFORM_NAME_LEN, "%s", BOOT_DEVICE_PATH);
sprintf(adler32Key + (PLATFORM_NAME_LEN + 38), "%s", bootInfo->bootFile);
adler32 = Adler32((unsigned char *)adler32Key, sizeof(adler32Key));
_BOOT_DEBUG_DUMP("adler32: %08X\n", adler32);
// Create path to pre-linked kernel.
sprintf(preLinkedKernelPath, "%s/%s_%s.%08lX", gPlatform.KernelCachePath, kKernelCache,
((gArchCPUType == CPU_TYPE_X86_64) ? "x86_64" : "i386"), adler32);
// Check if this file exists.
if ((GetFileInfo(NULL, preLinkedKernelPath, &flags, &cachetime) == 0) && ((flags & kFileTypeMask) == kFileTypeFlat))
{
_BOOT_DEBUG_DUMP("Pre-linked kernel cache located!\nLoading pre-linked kernel: %s\n", preLinkedKernelPath);
// Returns -1 on error, or the actual filesize.
if (LoadFile((const char *)preLinkedKernelPath))
{
retStatus = 1;
fileLoadBuffer = (void *)kLoadAddr;
bootFile[0] = 0;
}
_BOOT_DEBUG_ELSE_DUMP("Failed to load the pre-linked kernel. Will load: %s!\n", bootInfo->bootFile);
}
_BOOT_DEBUG_ELSE_DUMP("Failed to locate the pre-linked kernel!\n");
}
_BOOT_DEBUG_ELSE_DUMP("Failed to locate the cache directory!\n");
}
void boot(int biosdev)
{
int status;
char *bootFile;
unsigned long adler32;
BOOL quiet;
BOOL firstRun = YES;
BVRef bvChain;
zeroBSS();
// Initialize malloc
malloc_init(0, 0, 0, malloc_error);
// Enable A20 gate before accessing memory above 1Mb.
enableA20();
// Set reminder to unload the PXE base code. Neglect to unload
// the base code will result in a hang or kernel panic.
gUnloadPXEOnExit = 1;
// Record the device that the booter was loaded from.
gBIOSDev = biosdev & kBIOSDevMask;
// Initialize boot info structure.
initKernBootStruct( gBIOSDev );
// Setup VGA text mode.
// Not sure if it is safe to call setVideoMode() before the
// config table has been loaded. Call video_mode() instead.
video_mode( 2 ); // 80x25 mono text mode.
// Scan hardware configuration.
scanHardware();
// First get info for boot volume.
bvChain = scanBootVolumes(gBIOSDev, 0);
// Record default boot device.
gBootVolume = selectBootVolume(bvChain);
bootArgs->kernDev = MAKEKERNDEV(gBIOSDev,
BIOS_DEV_UNIT(gBootVolume),
gBootVolume->part_no );
// Load default config file from boot device.
status = loadSystemConfig(0, 0);
if ( getBoolForKey( kQuietBootKey, &quiet ) && quiet ) {
gBootMode |= kBootModeQuiet;
}
// Parse args, load and start kernel.
while (1)
{
const char *val;
int len;
int trycache;
long flags, cachetime, kerneltime, exttime;
int ret = -1;
// Initialize globals.
sysConfigValid = 0;
gErrors = 0;
status = getBootOptions(firstRun);
firstRun = NO;
if (status == -1) continue;
status = processBootOptions();
if ( status == 1 ) break;
if ( status == -1 ) continue;
// Found and loaded a config file. Proceed with boot.
// Reset cache name.
bzero(gCacheNameAdler, sizeof(gCacheNameAdler));
if ( getValueForKey( kRootDeviceKey, &val, &len ) == YES ) {
if (*val == '*') {
val++;
len--;
}
strncpy( gCacheNameAdler + 64, val, len );
sprintf(gCacheNameAdler + 64 + len, ",%s", bootArgs->bootFile);
} else {
strcpy(gCacheNameAdler + 64, bootArgs->bootFile);
}
adler32 = Adler32(gCacheNameAdler, sizeof(gCacheNameAdler));
if (getValueForKey(kKernelCacheKey, &val, &len) == YES) {
strlcpy(gBootKernelCacheFile, val, len+1);
} else {
sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePath, adler32);
}
// Check for cache file.
trycache = (((gBootMode & kBootModeSafe) == 0) &&
(gOverrideKernel == NO) &&
(gBootFileType == kBlockDeviceType) &&
(gMKextName[0] == '\0') &&
(gBootKernelCacheFile[0] != '\0'));
printf("Loading Darwin/x86\n");
if (trycache) do {
// if we haven't found the kernel yet, don't use the cache
ret = GetFileInfo(NULL, bootArgs->bootFile, &flags, &kerneltime);
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {
trycache = 0;
break;
}
ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)
|| (cachetime < kerneltime)) {
trycache = 0;
break;
}
ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);
if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)
&& (cachetime < exttime)) {
trycache = 0;
break;
}
if (kerneltime > exttime) {
exttime = kerneltime;
}
if (cachetime != (exttime + 1)) {
trycache = 0;
break;
}
} while (0);
do {
if (trycache) {
bootFile = gBootKernelCacheFile;
verbose("Loading kernel cache %s\n", bootFile);
ret = LoadFile(bootFile);
if (ret >= 0) {
break;
}
}
bootFile = bootArgs->bootFile;
verbose("Loading kernel %s\n", bootFile);
ret = LoadFile(bootFile);
} while (0);
clearActivityIndicator();
#if DEBUG
printf("Pausing...");
sleep(8);
#endif
if (ret < 0) {
error("Can't find %s\n", bootFile);
if ( gBootFileType == kBIOSDevTypeFloppy )
{
// floppy in drive, but failed to load kernel.
gBIOSDev = kBIOSDevTypeHardDrive;
initKernBootStruct( gBIOSDev );
printf("Attempting to load from hard drive...");
}
else if ( gBootFileType == kNetworkDeviceType )
{
// Return control back to PXE. Don't unload PXE base code.
gUnloadPXEOnExit = 0;
break;
}
} else {
/* Won't return if successful. */
ret = ExecKernel((void *)kLoadAddr);
}
} /* while(1) */
if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {
nbpUnloadBaseCode();
}
}
//==========================================================================
// LoadKernelCache - Try to load Kernel Cache.
// return the length of the loaded cache file or -1 on error
long LoadKernelCache(const char* cacheFile, void **binary) {
char kernelCacheFile[512];
char kernelCachePath[512];
long flags, time, cachetime, kerneltime, exttime, ret=-1;
unsigned long adler32;
if((gBootMode & kBootModeSafe) != 0)
{
verbose("Kernel Cache ignored.\n");
return -1;
}
// Use specify kernel cache file if not empty
if (cacheFile[0] != 0)
{
strlcpy(kernelCacheFile, cacheFile, sizeof(kernelCacheFile));
}
else
{
// Lion, Mountain Lion and Mavericks prelink kernel cache file
if ((checkOSVersion("10.7")) || (checkOSVersion("10.8")) || (checkOSVersion("10.9")))
{
sprintf(kernelCacheFile, "%skernelcache", kDefaultCachePathSnow);
}
// Snow Leopard prelink kernel cache file
else if (checkOSVersion("10.6")) {
sprintf(kernelCacheFile, "kernelcache_%s", (archCpuType == CPU_TYPE_I386)
? "i386" : "x86_64");
int lnam = strlen(kernelCacheFile) + 9; //with adler32
char* name;
long prev_time = 0;
struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);
while(readdir(cacheDir, (const char**)&name, &flags, &time) >= 0)
{
if (((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time
&& strstr(name, kernelCacheFile) && (name[lnam] != '.'))
{
sprintf(kernelCacheFile, "%s%s", kDefaultCachePathSnow, name);
prev_time = time;
}
}
}
else {
// Reset cache name.
bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);
sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);
adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));
sprintf(kernelCacheFile, "%s.%08lX", kDefaultCachePathLeo, adler32);
}
}
// Check if the kernel cache file exists
ret = -1;
// If boot from a boot helper partition check the kernel cache file on it
if (gBootVolume->flags & kBVFlagBooter) {
sprintf(kernelCachePath, "com.apple.boot.P%s", kernelCacheFile);
ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);
if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))
{
sprintf(kernelCachePath, "com.apple.boot.R%s", kernelCacheFile);
ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);
if ((ret == -1) || ((flags & kFileTypeMask) != kFileTypeFlat))
{
sprintf(kernelCachePath, "com.apple.boot.S%s", kernelCacheFile);
ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);
if ((flags & kFileTypeMask) != kFileTypeFlat)
ret = -1;
}
}
}
// If not found, use the original kernel cache path.
if (ret == -1) {
strcpy(kernelCachePath, kernelCacheFile);
ret = GetFileInfo(NULL, kernelCachePath, &flags, &cachetime);
if ((flags & kFileTypeMask) != kFileTypeFlat)
ret = -1;
}
// Exit if kernel cache file wasn't found
if (ret == -1) {
verbose("No Kernel Cache File '%s' found\n", kernelCacheFile);
return -1;
}
// Check if the kernel cache file is more recent (mtime)
// than the kernel file or the S/L/E directory
ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);
// Check if the kernel file is more recent than the cache file
if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeFlat)
&& (kerneltime > cachetime)) {
verbose("Kernel file (%s) is more recent than KernelCache (%s), ignoring KernelCache\n",
bootInfo->bootFile, kernelCacheFile);
return -1;
}
ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);
// Check if the S/L/E directory time is more recent than the cache file
if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)
&& (exttime > cachetime)) {
verbose("/System/Library/Extensions is more recent than KernelCache (%s), ignoring KernelCache\n",
kernelCacheFile);
return -1;
}
// Since the kernel cache file exists and is the most recent try to load it
verbose("Loading kernel cache %s\n", kernelCachePath);
ret = LoadThinFatFile(kernelCachePath, binary);
return ret; // ret contain the length of the binary
}
//==========================================================================
// The 'main' function for the booter. Called by boot0 when booting
// from a block device, or by the network booter.
//
// arguments:
// biosdev - Value passed from boot1/NBP to specify the device
// that the booter was loaded from.
//
// If biosdev is kBIOSDevNetwork, then this function will return if
// booting was unsuccessful. This allows the PXE firmware to try the
// next boot device on its list.
void common_boot(int biosdev)
{
bool quiet;
bool firstRun = true;
bool instantMenu;
bool rescanPrompt;
char *bootFile;
int status;
unsigned int allowBVFlags = kBVFlagSystemVolume | kBVFlagForeignBoot;
unsigned int denyBVFlags = kBVFlagEFISystem;
unsigned long adler32;
// Set reminder to unload the PXE base code. Neglect to unload
// the base code will result in a hang or kernel panic.
gUnloadPXEOnExit = true;
// Record the device that the booter was loaded from.
gBIOSDev = biosdev & kBIOSDevMask;
// Initialize boot info structure.
initKernBootStruct();
initBooterLog();
// Setup VGA text mode.
// Not sure if it is safe to call setVideoMode() before the
// config table has been loaded. Call video_mode() instead.
#if DEBUG
printf("before video_mode\n");
#endif
video_mode( 2 ); // 80x25 mono text mode.
#if DEBUG
printf("after video_mode\n");
#endif
// Scan and record the system's hardware information.
scan_platform();
// First get info for boot volume.
scanBootVolumes(gBIOSDev, 0);
bvChain = getBVChainForBIOSDev(gBIOSDev);
setBootGlobals(bvChain);
// Load boot.plist config file
status = loadChameleonConfig(&bootInfo->chameleonConfig);
if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->chameleonConfig) && quiet) {
gBootMode |= kBootModeQuiet;
}
// Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config
if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->chameleonConfig) && instantMenu) {
firstRun = false;
}
// Loading preboot ramdisk if exists.
loadPrebootRAMDisk();
// Disable rescan option by default
gEnableCDROMRescan = false;
// Enable it with Rescan=y in system config
if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->chameleonConfig)
&& gEnableCDROMRescan) {
gEnableCDROMRescan = true;
}
// Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.
rescanPrompt = false;
if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->chameleonConfig)
&& rescanPrompt && biosDevIsCDROM(gBIOSDev))
{
gEnableCDROMRescan = promptForRescanOption();
}
// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.
if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->chameleonConfig)
&& gScanSingleDrive) {
gScanSingleDrive = true;
}
// Create a list of partitions on device(s).
if (gScanSingleDrive) {
scanBootVolumes(gBIOSDev, &bvCount);
} else {
scanDisks(gBIOSDev, &bvCount);
}
// Create a separated bvr chain using the specified filters.
bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);
gBootVolume = selectBootVolume(bvChain);
// Intialize module system
init_module_system();
#if DEBUG
printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n",
gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);
printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n",
gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);
getchar();
#endif
useGUI = true;
// Override useGUI default
getBoolForKey(kGUIKey, &useGUI, &bootInfo->chameleonConfig);
if (useGUI && initGUI())
{
// initGUI() returned with an error, disabling GUI.
useGUI = false;
}
setBootGlobals(bvChain);
// Parse args, load and start kernel.
while (1)
{
bool tryresume, tryresumedefault, forceresume;
bool usecache = false;//true;
const char *val;
int len, trycache, ret = -1;
long flags, cachetime, kerneltime, exttime, sleeptime, time;
void *binary = (void *)kLoadAddr;
// additional variable for testing alternate kernel image locations on boot helper partitions.
char bootFileSpec[512];
// Initialize globals.
sysConfigValid = false;
gErrors = false;
status = getBootOptions(firstRun);
firstRun = false;
if (status == -1) continue;
status = processBootOptions();
// Status == 1 means to chainboot
if ( status == 1 ) break;
// Status == -1 means that the config file couldn't be loaded or that gBootVolume is NULL
if ( status == -1 )
{
// gBootVolume == NULL usually means the user hit escape.
if (gBootVolume == NULL)
{
freeFilteredBVChain(bvChain);
if (gEnableCDROMRescan)
rescanBIOSDevice(gBIOSDev);
bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);
setBootGlobals(bvChain);
setupDeviceList(&bootInfo->themeConfig);
}
continue;
}
// Other status (e.g. 0) means that we should proceed with boot.
// Turn off any GUI elements
if ( bootArgs->Video.v_display == GRAPHICS_MODE )
{
gui.devicelist.draw = false;
gui.bootprompt.draw = false;
gui.menu.draw = false;
gui.infobox.draw = false;
gui.logo.draw = false;
drawBackground();
updateVRAM();
}
// Find out which version mac os we're booting.
getOSVersion();
if (platformCPUFeature(CPU_FEATURE_EM64T)) {
archCpuType = CPU_TYPE_X86_64;
} else {
archCpuType = CPU_TYPE_I386;
}
if (getValueForKey(karch, &val, &len, &bootInfo->chameleonConfig)) {
if (strncmp(val, "i386", 4) == 0) {
archCpuType = CPU_TYPE_I386;
}
}
if (getValueForKey(kKernelArchKey, &val, &len, &bootInfo->chameleonConfig)) {
if (strncmp(val, "i386", 4) == 0) {
archCpuType = CPU_TYPE_I386;
}
}
// Notify modules that we are attempting to boot
execute_hook("PreBoot", NULL, NULL, NULL, NULL);
if (!getBoolForKey (kWake, &tryresume, &bootInfo->chameleonConfig)) {
tryresume = true;
tryresumedefault = true;
} else {
tryresumedefault = false;
}
if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->chameleonConfig)) {
forceresume = false;
}
if (forceresume) {
tryresume = true;
tryresumedefault = false;
}
while (tryresume) {
const char *tmp;
BVRef bvr;
if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->chameleonConfig))
val = "/private/var/vm/sleepimage";
// Do this first to be sure that root volume is mounted
ret = GetFileInfo(0, val, &flags, &sleeptime);
if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)
break;
// Can't check if it was hibernation Wake=y is required
if (bvr->modTime == 0 && tryresumedefault)
break;
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))
break;
if (!forceresume && ((sleeptime+3)<bvr->modTime)) {
#if DEBUG
printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",
bvr->modTime-sleeptime);
#endif
break;
}
HibernateBoot((char *)val);
break;
}
getBoolForKey(kUseKernelCache, &usecache, &bootInfo->chameleonConfig);
if (usecache) {
if( getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->chameleonConfig) || getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig) ) {
if (val[0] == '\\')
{
len--;
val++;
}
strlcpy(gBootKernelCacheFile, val, len + 1);
verbose("Using kernel cache: \"%s\" \n", gBootKernelCacheFile);
//sleep(5);
}
else {
// Lion and Mountain Lion prelink kernel cache file␊
if ((checkOSVersion("10.7")) || (checkOSVersion("10.8"))) {
sprintf(gBootKernelCacheFile, "%skernelcache", kDefaultCachePathSnow);
}
// Snow Leopard
else if (checkOSVersion("10.6")) {
sprintf(gBootKernelCacheFile, "kernelcache_%s", (archCpuType == CPU_TYPE_I386)
? "i386" : "x86_64");
int lnam = sizeof(gBootKernelCacheFile) + 9; //with adler32
char* name;
long prev_time = 0;
struct dirstuff* cacheDir = opendir(kDefaultCachePathSnow);
while(readdir(cacheDir, (const char**)&name, &flags, &time) >= 0)
{
if (((flags & kFileTypeMask) != kFileTypeDirectory) && time > prev_time
&& strstr(name, gBootKernelCacheFile) && (name[lnam] != '.'))
{
sprintf(gBootKernelCacheFile, "%s%s", kDefaultCachePathSnow, name);
prev_time = time;
}
}
}
else {
// Reset cache name.
bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);
sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);
adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));
sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePathLeo, adler32);
}
}
}
// Check for cache file.
trycache = (usecache &&
((gBootMode & kBootModeSafe) == 0) &&
!gOverrideKernel &&
(gBootFileType == kBlockDeviceType) &&
(gMKextName[0] == '\0') &&
(gBootKernelCacheFile[0] != '\0'));
verbose("trycache: %d\n", trycache);
verbose("Loading Darwin %s\n", gMacOSVersion);
if (trycache) do {
verbose("bootInfo->bootFile: \"%s\" \n", bootInfo->bootFile);
ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);
if (ret != 0) kerneltime = 0;
else if ((flags & kFileTypeMask) != kFileTypeFlat) {
trycache = 0;
verbose("trycache0 : 1\n");
break;
}
ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);
if ((ret != 0)) {
trycache = 0;
verbose("trycache0 : 2.1 \"%s\" \n", gBootKernelCacheFile);
break;
}
else if ( ((flags & kFileTypeMask) != kFileTypeFlat) ) {
trycache = 0;
verbose("trycache0 : 2.2\n");
break;
}
else if ( (cachetime < kerneltime) ) {
trycache = 0;
verbose("trycache0 : 2.3\n");
break;
}
ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);
if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)
&& (cachetime < exttime)) {
trycache = 0;
verbose("trycache0 : 3\n");
break;
}
if (ret == 0 && kerneltime > exttime) {
exttime = kerneltime;
}
if (ret == 0 && cachetime < (exttime + 1)) {
trycache = 0;
verbose("trycache0 : 4\n");
break;
}
} while (0);
// sleep(5);
do {
if (trycache) {
bootFile = gBootKernelCacheFile;
verbose("Loading kernel cache %s\n", bootFile);
if ((checkOSVersion("10.7")) || (checkOSVersion("10.8"))) {
ret = LoadThinFatFile(bootFile, &binary);
}
else {
ret = LoadFile(bootFile);
binary = (void *)kLoadAddr;
}
if (ret >= 0)
break;
verbose("Kernel cache did not load %s\n ", bootFile);
}
if ((checkOSVersion("10.7")) || (checkOSVersion("10.8"))) {
bootFile = gBootKernelCacheFile;
}
else {
sprintf(bootFile, "\%s", bootInfo->bootFile);
}
// Try to load kernel image from alternate locations on boot helper partitions.
sprintf(bootFileSpec, "com.apple.boot.P%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
sprintf(bootFileSpec, "com.apple.boot.R%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
sprintf(bootFileSpec, "com.apple.boot.S%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
// No alternate location found, using the original kernel image path.
strcpy(bootFileSpec, bootInfo->bootFile);
}
}
}
if ((checkOSVersion("10.7")) || (checkOSVersion("10.8")))
{
//Lion, dont load kernel if haz cache
if (!trycache)
{
verbose("Loading kernel %s\n", bootFileSpec);
ret = LoadThinFatFile(bootFileSpec, &binary);
if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)
{
archCpuType = CPU_TYPE_I386;
ret = LoadThinFatFile(bootFileSpec, &binary);
}
}
else ret = 1;
}
else
{
//Snow Leopard or older
verbose("Loading kernel %s\n", bootFileSpec);
ret = LoadThinFatFile(bootFileSpec, &binary);
if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)
{
archCpuType = CPU_TYPE_I386;
ret = LoadThinFatFile(bootFileSpec, &binary);
}
}
} while (0);
clearActivityIndicator();
#if DEBUG
printf("Pausing...");
sleep(8);
#endif
if (ret <= 0) {
printf("Can't find %s\n", bootFile);
sleep(1);
if (gBootFileType == kNetworkDeviceType) {
// Return control back to PXE. Don't unload PXE base code.
gUnloadPXEOnExit = false;
break;
}
} else {
/* Won't return if successful. */
ret = ExecKernel(binary);
}
}
// chainboot
if (status == 1) {
// if we are already in graphics-mode,
if (getVideoMode() == GRAPHICS_MODE) {
setVideoMode(VGA_TEXT_MODE, 0); // switch back to text mode.
}
}
if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit) {
nbpUnloadBaseCode();
}
}
//==========================================================================
// The 'main' function for the booter. Called by boot0 when booting
// from a block device, or by the network booter.
//
// arguments:
// biosdev - Value passed from boot1/NBP to specify the device
// that the booter was loaded from.
//
// If biosdev is kBIOSDevNetwork, then this function will return if
// booting was unsuccessful. This allows the PXE firmware to try the
// next boot device on its list.
void common_boot(int biosdev)
{
const char *val;
char *bootFile;
unsigned long adler32;
int status;
int cnt;
bool quiet;
bool firstRun = true;
bool instantMenu;
bool rescanPrompt;
// Record the device that the booter was loaded from.
gBIOSDev = biosdev & kBIOSDevMask;
// Initialize boot info structure.
initKernBootStruct();
// Setup VGA text mode.
// Not sure if it is safe to call setVideoMode() before the
// config table has been loaded. Call video_mode() instead.
#if DEBUG
printf("before video_mode\n");
#endif
video_mode( 2 ); // 80x25 mono text mode.
#if DEBUG
printf("after video_mode\n");
#endif
// First get info for boot volume.
scanBootVolumes(gBIOSDev, 0);
bvChain = getBVChainForBIOSDev(gBIOSDev);
setBootGlobals(bvChain);
// Load boot.plist config file
status = loadSystemConfig(&bootInfo->bootConfig);
if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {
gBootMode |= kBootModeQuiet;
}
// Get verbosity at early stage to allow a quiet booter
if (getValueForKey(kKernelFlagsKey, &val, &cnt, &bootInfo->bootConfig)) {
if (getValueForBootKey(val, kVerboseModeFlag, &val, &cnt)) {
gVerboseMode = true;
}
}
// Scan and record the system's hardware information.
scan_platform();
// Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config
if (getBoolForKey(kInsantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {
firstRun = false;
}
// Loading preboot ramdisk if exists.
loadPrebootRAMDisk();
// Disable rescan option by default
gEnableCDROMRescan = false;
// Enable it with Rescan=y in system config
if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan) {
gEnableCDROMRescan = true;
}
// Ask the user for Rescan option by setting "Rescan Prompt"=y in system config.
rescanPrompt = false;
if (getBoolForKey(kRescanPromptKey, &rescanPrompt , &bootInfo->bootConfig) && rescanPrompt && biosDevIsCDROM(gBIOSDev)) {
gEnableCDROMRescan = promptForRescanOption();
}
// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.
if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive) {
gScanSingleDrive = true;
}
// Create a list of partitions on device(s).
if (gScanSingleDrive) {
scanBootVolumes(gBIOSDev, &bvCount);
} else {
scanDisks(gBIOSDev, &bvCount);
}
// Create a separated bvr chain using the specified filters.
bvChain = newFilteredBVChain(0x80, 0xFF, kBVFlagSystemVolume|kBVFlagForeignBoot, kBVFlagEFISystem, &gDeviceCount);
gBootVolume = selectBootVolume(bvChain);
#if DEBUG
printf(" Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);
printf(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);
getc();
#endif
useGUI = true;
// Override useGUI default
getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig);
if (useGUI) {
if (gVerboseMode) {
printf("Switching to GUI mode in 3 seconds...\n");
sleep(3);
}
initGUI();
/* XXX AsereBLN handle error */
}
setBootGlobals(bvChain);
// Parse args, load and start kernel.
while (1) {
const char *val;
int len;
int trycache;
long flags, cachetime, kerneltime, exttime, sleeptime, time;
int ret = -1;
void *binary = (void *)kLoadAddr;
bool tryresume;
bool tryresumedefault;
bool forceresume;
config_file_t systemVersion; // system.plist of booting partition
// additional variable for testing alternate kernel image locations on boot helper partitions.
char bootFileSpec[512];
// Initialize globals.
sysConfigValid = false;
gErrors = false;
getBootOptions(firstRun);
firstRun = false;
status = processBootOptions();
// Status==1 means to chainboot
if ( status == 1 ) break;
// Status==-1 means that the config file couldn't be loaded or that gBootVolume is NULL
if ( status == -1 )
{
// gBootVolume == NULL usually means the user hit escape.
if(gBootVolume == NULL)
{
freeFilteredBVChain(bvChain);
if (gEnableCDROMRescan)
rescanBIOSDevice(gBIOSDev);
bvChain = newFilteredBVChain(0x80, 0xFF, kBVFlagSystemVolume|kBVFlagForeignBoot, kBVFlagEFISystem, &gDeviceCount);
setBootGlobals(bvChain);
}
continue;
}
// Other status (e.g. 0) means that we should proceed with boot.
if( bootArgs->Video.v_display == GRAPHICS_MODE )
drawBackground();
// Found and loaded a config file. Proceed with boot.
// Turn off any GUI elements
if( bootArgs->Video.v_display == GRAPHICS_MODE )
{
gui.devicelist.draw = false;
gui.bootprompt.draw = false;
gui.menu.draw = false;
gui.infobox.draw = false;
drawBackground();
updateVRAM();
}
// Find out which version mac os we're booting.
if (!loadConfigFile("System/Library/CoreServices/SystemVersion.plist", &systemVersion)) {
if (getValueForKey(kProductVersion, &val, &len, &systemVersion)) {
// getValueForKey uses const char for val
// so copy it and trim
strncpy(gMacOSVersion, val, MIN(len, 4));
gMacOSVersion[MIN(len, 4)] = '\0';
}
}
if (platformCPUFeature(CPU_FEATURE_EM64T)) {
archCpuType = CPU_TYPE_X86_64;
} else {
archCpuType = CPU_TYPE_I386;
}
if (getValueForKey(karch, &val, &len, &bootInfo->bootConfig)) {
if (strncmp(val, "i386", 4) == 0) {
archCpuType = CPU_TYPE_I386;
}
}
if (getValueForKey(k32BitModeFlag, &val, &len, &bootInfo->bootConfig)) {
archCpuType = CPU_TYPE_I386;
}
if (!getBoolForKey (kWake, &tryresume, &bootInfo->bootConfig)) {
tryresume = true;
tryresumedefault = true;
} else {
tryresumedefault = false;
}
if (!getBoolForKey (kForceWake, &forceresume, &bootInfo->bootConfig)) {
forceresume = false;
}
if (forceresume) {
tryresume = true;
tryresumedefault = false;
}
while (tryresume) {
const char *tmp;
BVRef bvr;
if (!getValueForKey(kWakeImage, &val, &len, &bootInfo->bootConfig))
val="/private/var/vm/sleepimage";
// Do this first to be sure that root volume is mounted
ret = GetFileInfo(0, val, &flags, &sleeptime);
if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)
break;
// Can't check if it was hibernation Wake=y is required
if (bvr->modTime == 0 && tryresumedefault)
break;
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))
break;
if (!forceresume && sleeptime+3<bvr->modTime) {
printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override\n",bvr->modTime-sleeptime);
break;
}
HibernateBoot((char *)val);
break;
}
// Reset cache name.
bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);
sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile);
adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));
if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {
strlcpy(gBootKernelCacheFile, val, len+1);
} else {
sprintf(gBootKernelCacheFile, "%s.%08lX", kDefaultCachePath, adler32);
}
// Check for cache file.
trycache = (((gBootMode & kBootModeSafe) == 0) &&
!gOverrideKernel &&
(gMKextName[0] == '\0') &&
(gBootKernelCacheFile[0] != '\0'));
verbose("Loading Darwin %s\n", gMacOSVersion);
if (trycache) do {
// if we haven't found the kernel yet, don't use the cache
ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)) {
trycache = 0;
break;
}
ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)
|| (cachetime < kerneltime)) {
trycache = 0;
break;
}
ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);
if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)
&& (cachetime < exttime)) {
trycache = 0;
break;
}
if (kerneltime > exttime) {
exttime = kerneltime;
}
if (cachetime != (exttime + 1)) {
trycache = 0;
break;
}
} while (0);
do {
if (trycache) {
bootFile = gBootKernelCacheFile;
verbose("Loading kernel cache %s\n", bootFile);
ret = LoadFile(bootFile);
binary = (void *)kLoadAddr;
if (ret >= 0) {
break;
}
}
bootFile = bootInfo->bootFile;
// Try to load kernel image from alternate locations on boot helper partitions.
sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
// Not found any alternate locations, using the original kernel image path.
strcpy(bootFileSpec, bootFile);
}
}
}
verbose("Loading kernel %s\n", bootFileSpec);
ret = LoadThinFatFile(bootFileSpec, &binary);
if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)
{
archCpuType = CPU_TYPE_I386;
ret = LoadThinFatFile(bootFileSpec, &binary);
}
} while (0);
clearActivityIndicator();
#if DEBUG
printf("Pausing...");
sleep(8);
#endif
if (ret <= 0) {
printf("Can't find %s\n", bootFile);
if(gui.initialised) {
sleep(1);
drawBackground();
gui.devicelist.draw = true;
gui.redraw = true;
}
} else {
/* Won't return if successful. */
ret = ExecKernel(binary);
}
}
// chainboot
if (status==1) {
if (getVideoMode() == GRAPHICS_MODE) { // if we are already in graphics-mode,
setVideoMode(VGA_TEXT_MODE, 0); // switch back to text mode
}
}
}
void loadCustomRomSettings(const QString & _strIniFolder, const char * _strRomName)
{
QSettings settings(_strIniFolder + "/" + strCustomSettingsFileName, QSettings::IniFormat);
config.version = settings.value("version").toInt();
if (config.version != CONFIG_VERSION_CURRENT)
return;
const QByteArray bytes(_strRomName);
bool bASCII = true;
for (int i = 0; i < bytes.length() && bASCII; ++i)
bASCII = bytes.at(i) >= 0;
const QString romName = bASCII ? QString::fromLatin1(_strRomName).toUpper() : QString::number(Adler32(0xFFFFFFFF, bytes.data(), bytes.length()), 16).toUpper();
if (settings.childGroups().indexOf(romName) < 0)
return;
settings.beginGroup(romName);
_loadSettings(settings);
settings.endGroup();
}
//==========================================================================
// The 'main' function for the booter. Called by boot0 when booting
// from a block device, or by the network booter.
//
// arguments:
// biosdev - Value passed from boot1/NBP to specify the device
// that the booter was loaded from.
//
// If biosdev is kBIOSDevNetwork, then this function will return if
// booting was unsuccessful. This allows the PXE firmware to try the
// next boot device on its list.
void common_boot(int biosdev)
{
int status;
char *bootFile;
unsigned long adler32;
bool quiet;
bool firstRun = true;
bool instantMenu;
bool rescanPrompt = false;
unsigned int allowBVFlags = kBVFlagSystemVolume|kBVFlagForeignBoot;
unsigned int denyBVFlags = kBVFlagEFISystem;
// Set reminder to unload the PXE base code. Neglect to unload
// the base code will result in a hang or kernel panic.
gUnloadPXEOnExit = true;
// Record the device that the booter was loaded from.
gBIOSDev = biosdev & kBIOSDevMask;
// Initialize boot info structure.
initKernBootStruct();
initBooterLog();
// Setup VGA text mode.
// Not sure if it is safe to call setVideoMode() before the
// config table has been loaded. Call video_mode() instead.
#if DEBUG
printf("before video_mode\n"); //Azi: this one is not printing... i remember it did.. check trunk.
#endif
video_mode( 2 ); // 80x25 mono text mode.
#if DEBUG
printf("after video_mode\n");
#endif
// Scan and record the system's hardware information.
scan_platform();
// First get info for boot volume.
scanBootVolumes(gBIOSDev, 0);
bvChain = getBVChainForBIOSDev(gBIOSDev);
//Azi: initialising gBIOSBootVolume & gBootVolume (Startup volume) for the first time.. i think!?
// also, kDefaultPartitionKey is checked here, on selectBootVolume.
setBootGlobals(bvChain);
msglog("setBootGlobals:\n Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);
msglog(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);
// Boot Volume is set as Root at this point so, pointing to Extra, /Extra or bt(0,0)/Extra
// is exactly the same. Review bt(0,0)/bla bla paths...... (Reviewing...)
//Azi: works as expected but... trying this because Kernel=mach_kernel doesn't work on a
// override Boot.plist; this makes it impossible to override e.g. Kernel=bt(0,0)mach_kernel
// on the main Boot.plist, when loading kernel from ramdisk btAliased.
loadPrebootRAMDisk();
// Load boot.plist config file
//Azi: on this first check, boot.plist acts as both "booter config file"
// and bootargs/options "carrier".*****
status = loadSystemConfig(&bootInfo->bootConfig);
if (getBoolForKey(kQuietBootKey, &quiet, &bootInfo->bootConfig) && quiet) {
gBootMode |= kBootModeQuiet;
}
// Override firstRun to get to the boot menu instantly by setting "Instant Menu"=y in system config
if (getBoolForKey(kInstantMenuKey, &instantMenu, &bootInfo->bootConfig) && instantMenu) {
firstRun = false;
}
// Loading preboot ramdisk if exists.
// loadPrebootRAMDisk(); //Azi: this needs to be done before load_all_modules()
// because of btAlias... (Reviewing...)
// Intialize module system
if (init_module_system())
{
load_all_modules();
}
// Disable rescan option by default
gEnableCDROMRescan = false;
// If we're loading the booter from optical media... (Reviewing...)
if (biosDevIsCDROM(gBIOSDev))
{
// ... ask the user for Rescan option by setting "Rescan Prompt"=y in system config...
if (getBoolForKey(kRescanPromptKey, &rescanPrompt, &bootInfo->bootConfig) && rescanPrompt)
{
gEnableCDROMRescan = promptForRescanOption();
}
else // ... or enable it with Rescan=y in system config.
if (getBoolForKey(kRescanKey, &gEnableCDROMRescan, &bootInfo->bootConfig) && gEnableCDROMRescan)
{
gEnableCDROMRescan = true;
}
}
//Azi: Is this a cdrom only thing? (Reviewing...)
// Enable touching a single BIOS device only if "Scan Single Drive"=y is set in system config.
if (getBoolForKey(kScanSingleDriveKey, &gScanSingleDrive, &bootInfo->bootConfig) && gScanSingleDrive)
{
scanBootVolumes(gBIOSDev, &bvCount);
}
else
{
//Azi: scanDisks uses scanBootVolumes.
scanDisks(gBIOSDev, &bvCount);
}
// Create a separated bvr chain using the specified filters.
bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);
gBootVolume = selectBootVolume(bvChain);
//#if DEBUG
//printf
msglog(":something...???\n Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);
msglog(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);
// getchar();
//#endif
useGUI = true;
// Override useGUI default
getBoolForKey(kGUIKey, &useGUI, &bootInfo->bootConfig);
// AutoResolution - Azi: default to false
// http://forum.voodooprojects.org/index.php/topic,1227.0.html
gAutoResolution = false;
// Check if user enabled AutoResolution on Boot.plist...
getBoolForKey(kAutoResolutionKey, &gAutoResolution, &bootInfo->bootConfig);
// Patch the Video Bios with the extracted resolution, before initGui.
if (gAutoResolution == true)
{
initAutoRes();
}
if (useGUI && initGUI())
{
// initGUI() returned with an error, disabling GUI.
useGUI = false;
}
setBootGlobals(bvChain);
msglog("setBootGlobals:\n Default: %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBootVolume, gBootVolume->biosdev, gBootVolume->part_no, gBootVolume->flags);
msglog(" bt(0,0): %d, ->biosdev: %d, ->part_no: %d ->flags: %d\n", gBIOSBootVolume, gBIOSBootVolume->biosdev, gBIOSBootVolume->part_no, gBIOSBootVolume->flags);
// Parse args, load and start kernel.
while (1) {
const char *val;
int len;
int trycache;
long flags, cachetime, kerneltime, exttime, sleeptime, time;
int ret = -1;
void *binary = (void *)kLoadAddr;
bool tryresume;
bool tryresumedefault;
bool forceresume;
bool ignoreKC = false;
// additional variable for testing alternate kernel image locations on boot helper partitions.
char bootFileSpec[512];
// Initialize globals.
sysConfigValid = false;
gErrors = false;
status = getBootOptions(firstRun);
firstRun = false;
if (status == -1) continue;
//Azi: test (gBootVolume == NULL) - so far Ok!
// test with optical media again...?
// Turn off any GUI elements, draw background and update VRAM.
if ( bootArgs->Video.v_display == GRAPHICS_MODE )
{
gui.devicelist.draw = false;
gui.bootprompt.draw = false;
gui.menu.draw = false;
gui.infobox.draw = false;
gui.logo.draw = false;
drawBackground();
updateVRAM();
}
status = processBootOptions();
//Azi: AutoResolution - closing Vbios here without restoring, causes an allocation error,
// if the user tries to boot, after a e.g."Can't find bla_kernel" msg.
// Doing it on execKernel() instead.
// Status == 1 means to chainboot
if ( status == 1 ) break;
// Status == -1 means that gBootVolume is NULL. Config file is not mandatory anymore!
if ( status == -1 )
{
// gBootVolume == NULL usually means the user hit escape. (Reviewing...)
if (gBootVolume == NULL)
{
freeFilteredBVChain(bvChain);
if (gEnableCDROMRescan)
rescanBIOSDevice(gBIOSDev);
bvChain = newFilteredBVChain(0x80, 0xFF, allowBVFlags, denyBVFlags, &gDeviceCount);
setBootGlobals(bvChain);
setupDeviceList(&bootInfo->themeConfig);
}
continue;
}
// Other status (e.g. 0) means that we should proceed with boot.
// If cpu handles 64 bit instructions...
if (platformCPUFeature(CPU_FEATURE_EM64T))
{
// use x86_64 kernel arch,...
archCpuType = CPU_TYPE_X86_64;
}
else
{
// else use i386 kernel arch.
archCpuType = CPU_TYPE_I386;
}
// If user override...
if (getValueForKey(kArchKey, &val, &len, &bootInfo->bootConfig))
{
// matches i386...
if (strncmp(val, "i386", 4) == 0)
{
// use i386 kernel arch.
archCpuType = CPU_TYPE_I386;
}
}
if (!getBoolForKey (kWakeKey, &tryresume, &bootInfo->bootConfig)) {
tryresume = true;
tryresumedefault = true;
} else {
tryresumedefault = false;
}
if (!getBoolForKey (kForceWakeKey, &forceresume, &bootInfo->bootConfig)) {
forceresume = false;
}
if (forceresume) {
tryresume = true;
tryresumedefault = false;
}
while (tryresume) {
const char *tmp;
BVRef bvr;
if (!getValueForKey(kWakeKeyImageKey, &val, &len, &bootInfo->bootConfig))
val="/private/var/vm/sleepimage";
// Do this first to be sure that root volume is mounted
ret = GetFileInfo(0, val, &flags, &sleeptime);
if ((bvr = getBootVolumeRef(val, &tmp)) == NULL)
break;
// Can't check if it was hibernation Wake=y is required
if (bvr->modTime == 0 && tryresumedefault)
break;
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))
break;
if (!forceresume && ((sleeptime+3)<bvr->modTime)) {
//Azi: no need for printf at this point - reminder
printf ("Hibernate image is too old by %d seconds. Use ForceWake=y to override.\n",bvr->modTime-sleeptime);
break;
}
HibernateBoot((char *)val);
break;
}
//Azi:kernelcache stuff
bool patchKernel = false;
getBoolForKey(kKPatcherKey, &patchKernel, &bootInfo->bootConfig);
//Azi: avoiding having to use -f to ignore kernel cache
//Azi: ignore kernel cache but still use kext cache (E/E.mkext & S/L/E.mkext). - explain...
getBoolForKey(kUseKCKey, &ignoreKC, &bootInfo->bootConfig); // equivalent to UseKernelCache
if (ignoreKC)
{
verbose("KC: cache ignored by user.\n");
// make sure the damn thing get's zeroed, just in case... :)*
bzero(gBootKernelCacheFile, sizeof(gBootKernelCacheFile));
}
else if (patchKernel) // to be moved..?
{
verbose("KC: kernel patcher enabled, ignore cache.\n");
bzero(gBootKernelCacheFile, sizeof(gBootKernelCacheFile));
}
else if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig))
{
strlcpy(gBootKernelCacheFile, val, len + 1);
verbose("KC: path set by user = %s\n", gBootKernelCacheFile);
//Azi: bypass time check when user sets path ???
// cache is still ignored if time doesn't match... (e.g. booter on usb stick)
}
else
{
// Reset cache name.
bzero(gCacheNameAdler + 64, sizeof(gCacheNameAdler) - 64);
// kextcache_main.c: Construct entry from UUID of boot volume...(reminder)
// assemble ?string? to generate adler from...
// sprintf(gCacheNameAdler + 64, "%s,%s", gRootDevice, bootInfo->bootFile); - OLD
const char *ProductName = getStringForKey("SMproductname", &bootInfo->smbiosConfig);
sprintf(gCacheNameAdler, ProductName); // well, at least the smbios.plist can be loaded this early...
// to set/get "ProductName" this early, booter needs complete rewrite!!
// see DHP's Revolution booter rework example!
// verbose("KC: gCacheNameAdler 1 = %s\n", gCacheNameAdler);
//Azi: check the validity of this, e.g. on Helper Partitions
sprintf(gCacheNameAdler + 64, "%s", "\\System\\Library\\CoreServices\\boot.efi");
// verbose("KC: gCacheNameAdler 2 = %s\n", gCacheNameAdler + 64);
sprintf(gCacheNameAdler + (64 + 38), "%s", bootInfo->bootFile);
// verbose("KC: gCacheNameAdler 3 = %s\n", gCacheNameAdler + (64 + 38));
// generate adler
adler32 = Adler32((unsigned char *)gCacheNameAdler, sizeof(gCacheNameAdler));
// verbose("KC: Adler32 = %08X\n", adler32);
//Azi: no check for OS version here ?? - yes there is :)
// append arch and/or adler (checksum) to kc path...
if (gMacOSVersion[3] <= '5')
{
sprintf(gBootKernelCacheFile, "%s.%08lX", kCachePathTigerLeopard, adler32);
// verbose("KC: adler added to path = %s\n", gBootKernelCacheFile);
}
else
{
sprintf(gBootKernelCacheFile, "%s_%s.%08X", kCachePathSnowLion,
(archCpuType == CPU_TYPE_I386) ? "i386" : "x86_64", adler32);
// verbose("KC: arch & adler added to path = %s\n", gBootKernelCacheFile);
}
}
// Check for cache file.
//Azi: trycache is done if...
trycache = ( ( (gBootMode & kBootModeSafe) == 0) //... we're not booting in safe mode (-x arg),
&& !gOverrideKernel // we're not overriding default kernel "name",
&& (gBootFileType == kBlockDeviceType) // we're booting from local storage device,
&& (gMKextName[0] == '\0') // "MKext Cache" key IS NOT in use, and
&& (gBootKernelCacheFile[0] != '\0') ); // gBootKernelCacheFile is populated.
// we could add the use of "kernelpatcher" to this bunch..??
// verbose("Loading Darwin %s\n", gMacOSVersion); //Azi: move?? to getOSVersion? :)
if (trycache) do
{
verbose("KC: checking kernel cache (system prelinked kernel)...\n");
// if we haven't found the kernel yet, don't use the cache
ret = GetFileInfo(NULL, bootInfo->bootFile, &flags, &kerneltime);
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat))
{
verbose("KC: no kernel found (shouldn't happen?!?)\n");
trycache = 0; // ignore kernel cache...
break;
}
verbose("KC: kerneltime = %d\n", kerneltime);
ret = GetFileInfo(NULL, gBootKernelCacheFile, &flags, &cachetime);
if ((ret != 0) || ((flags & kFileTypeMask) != kFileTypeFlat)
|| (cachetime < kerneltime))
{
if (cachetime <= 100) // confirm: 100 = inexistent path, -xxxxxxxxx = wrong name
// not confirming... i also get -xxxxxxxxx with inexisting prelinked kernel
verbose("KC: cachetime = %d, kernel cache path/adler is incorrect, ignoring it. ??? \n",
cachetime);
else
verbose("KC: cachetime = %d, kernel cache is older than the kernel, ignoring it.\n",
cachetime);
trycache = 0;
break;
}
verbose("KC: cachetime = %d\n", cachetime);
ret = GetFileInfo("/System/Library/", "Extensions", &flags, &exttime);
if ((ret == 0) && ((flags & kFileTypeMask) == kFileTypeDirectory)
&& (cachetime < exttime))
{
verbose("KC: exttime = %d, kernel cache is older than S/L/E, ignoring it.\n", exttime);
trycache = 0;
break;
}
verbose("KC: exttime = %d\n", exttime);
if (kerneltime > exttime) // if S/L/E is older than the kernel...
{
verbose("KC: S/L/E is older than the kernel, matching exttime with kerneltime...\n");
exttime = kerneltime;
}
verbose("KC: exttime +1 = %d\n", exttime + 1);
if (cachetime != (exttime + 1))
{
verbose("KC: kernel cache time is diff from S/L/E time, ignoring it.\n");
trycache = 0;
break;
}
verbose("KC: kernel cache found and up to date, will be used.\n");
} while (0);
do
{
// Load kernel cache if not ignored.
if (trycache)
{
bootFile = gBootKernelCacheFile;
verbose("Loading kernel cache %s\n", bootFile);
ret = LoadFile(bootFile);
binary = (void *)kLoadAddr;
if (ret >= 0)
{
break;
}
}
bootFile = bootInfo->bootFile;
// Try to load kernel image from alternate locations on boot helper partitions.
sprintf(bootFileSpec, "com.apple.boot.P/%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
sprintf(bootFileSpec, "com.apple.boot.R/%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
sprintf(bootFileSpec, "com.apple.boot.S/%s", bootFile);
ret = GetFileInfo(NULL, bootFileSpec, &flags, &time);
if (ret == -1)
{
// No alternate location found, using the original kernel image path.
strcpy(bootFileSpec, bootFile);
}
}
}
verbose("Loading kernel %s\n", bootFileSpec);
ret = LoadThinFatFile(bootFileSpec, &binary);
if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)
{
archCpuType = CPU_TYPE_I386;
ret = LoadThinFatFile(bootFileSpec, &binary);
}
} while (0);
clearActivityIndicator();
/*#if DEBUG
printf("Pausing...");
sleep(8);
#endif
Azi: annoying stuff :P */
if (ret <= 0)
{
printf("Can't find %s\n", bootFile);
sleep(1);
if (gBootFileType == kNetworkDeviceType) {
// Return control back to PXE. Don't unload PXE base code.
gUnloadPXEOnExit = false;
break;
}
}
else
{
// Won't return if successful.
ret = ExecKernel(binary);
}
} // while (1)
// chainboot
if (status==1) {
if (getVideoMode() == GRAPHICS_MODE) { // if we are already in graphics-mode,
setVideoMode(VGA_TEXT_MODE, 0); // switch back to text mode
}
}
if ((gBootFileType == kNetworkDeviceType) && gUnloadPXEOnExit)
{
nbpUnloadBaseCode();
}
}
