void scanDisks(int biosdev, int *count)
{
#define MAX_HDD_COUNT 32
int bvCount;
int hd = 0;
// Testing up to MAX_HDD_COUNT hard drives.
while(!testBiosread(0x80 + hd, 0) && hd < MAX_HDD_COUNT)
{
bvCount = 0;
scanBootVolumes(0x80 + hd, &bvCount);
hd++;
}
// Also scanning CD/DVD drive.
if (biosDevIsCDROM(gBIOSDev))
{
bvCount = 0;
scanBootVolumes(gBIOSDev, &bvCount);
}
}
// Function name is a misnomer as scanBootVolumes usually calls diskScanBootVolumes
// which caches the information. So it's only allocated on the first run.
static BVRef newBootVolumeRef( int biosdev, int partno )
{
BVRef bvr, bvr1, bvrChain;
// Fetch the volume list from the device.
scanBootVolumes( biosdev, NULL );
bvrChain = getBVChainForBIOSDev(biosdev);
// Look for a perfect match based on device and partition number.
for ( bvr1 = NULL, bvr = bvrChain; bvr; bvr = bvr->next )
{
if ( ( bvr->flags & kBVFlagNativeBoot ) == 0 ) continue;
bvr1 = bvr;
if ( bvr->part_no == partno ) break;
}
return bvr ? bvr : bvr1;
}
//==========================================================================
// Function name is a misnomer as scanBootVolumes usually calls diskScanBootVolumes
// which caches the information. So it's only allocated on the first run.
static BVRef newBootVolumeRef( int biosdev, int partno )
{
BVRef bvr, bvr1, bvrChain;
bvr = bvr1 = NULL;
// Try resolving "rd" and "bt" devices first.
if (biosdev == kPseudoBIOSDevRAMDisk)
{
if (gRAMDiskVolume)
bvr1 = gRAMDiskVolume;
}
else if (biosdev == kPseudoBIOSDevBooter)
{
if (gRAMDiskVolume != NULL && gRAMDiskBTAliased)
bvr1 = gRAMDiskVolume;
else
bvr1 = gBIOSBootVolume;
}
else
{
// Fetch the volume list from the device.
scanBootVolumes( biosdev, NULL );
bvrChain = getBVChainForBIOSDev(biosdev);
// Look for a perfect match based on device and partition number.
for ( bvr1 = NULL, bvr = bvrChain; bvr; bvr = bvr->next )
{
if ( ( bvr->flags & kBVFlagNativeBoot ) == 0 ) continue;
bvr1 = bvr;
if ( bvr->part_no == partno ) break;
}
}
return bvr ? bvr : bvr1;
}
//==========================================================================
// 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;
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();
// 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 = 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(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, allowBVFlags, denyBVFlags, &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);
// Before initGui, patch the video bios with the correct resolution
UInt32 params[4];
int count;
params[3] = 0;
autoResolution = TRUE;
// Override AutoResolution default
getBoolForKey(kAutoResolutionKey, &autoResolution, &bootInfo->bootConfig);
vbios_map * map = open_vbios(CT_UNKWN);
//Saving the bios in case we have to unpatch it
save_vbios(map);
if (autoResolution == TRUE) {
//Get Resolution from Graphics Mode key
count = getNumberArrayFromProperty(kGraphicsModeKey, params, 4);
if ( count < 3 ){
//If no Graphics Mode key, get from EDID
getResolution(¶ms[0], ¶ms[1], ¶ms[2]);
verbose("EDID Resolution: %dx%d\n",params[0], params[1]);
}
} else {
if ( params[2] == 256 ) params[2] = 8;
if ( params[2] == 555 ) params[2] = 16;
if ( params[2] == 888 ) params[2] = 32;
}
if (params[0]!=0 && params[1]!=0) {
unlock_vbios(map);
patch_vbios(map, params[0], params[1], params[2], 0, 0);
relock_vbios(map);
#if AUTORES_DEBUG
printf("Press Any Key...\n");
getc();
#endif
}
if (useGUI) {
/* XXX AsereBLN handle error */
initGUI();
}
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;
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);
}
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();
}
/*
* AutoResolution - Reapply the patch or cancel if Graphics Mode was incorrect
* or EDID Info was insane
*/
getBoolForKey(kAutoResolutionKey, &autoResolution, &bootInfo->bootConfig);
//Restore the vbios for Cancelation
if ((autoResolution == FALSE) && map) {
unlock_vbios(map);
restore_vbios(map);
relock_vbios(map);
close_vbios(map);
}
if ((autoResolution == TRUE) && map) {
//Reapply patch in case resolution have changed
count = getNumberArrayFromProperty(kGraphicsModeKey, params, 4);
if ( count < 3 ) {
getResolution(¶ms[0], ¶ms[1], ¶ms[2]);
}
else
{
if ( params[2] == 256 ) params[2] = 8;
if ( params[2] == 555 ) params[2] = 16;
if ( params[2] == 888 ) params[2] = 32;
}
if (params[0]!=0 && params[1]!=0) {
unlock_vbios(map);
patch_vbios(map, params[0], params[1], params[2], 0, 0);
relock_vbios(map);
close_vbios(map);
}
}
// 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 &&
(gBootFileType == kBlockDeviceType) &&
(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;
}
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 (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();
}
}
//==========================================================================
// 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;
int status;
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-log
initBooterLog();
// 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
// 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, bvChain);
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 useKernelCache = true; // by default try to use the prelinked kernel
const char *val;
int len, ret = -1;
long flags, sleeptime, time;
void *binary = (void *)kLoadAddr;
char bootFile[sizeof(bootInfo->bootFile)];
char bootFilePath[512];
char kernelCacheFile[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, &useKernelCache, &bootInfo->chameleonConfig);
if (useKernelCache) do {
// Determine the name of the Kernel Cache
if (getValueForKey(kKernelCacheKey, &val, &len, &bootInfo->bootConfig)) {
if (val[0] == '\\')
{
len--;
val++;
}
/* FIXME: check len vs sizeof(kernelCacheFile) */
strlcpy(kernelCacheFile, val, len + 1);
} else {
kernelCacheFile[0] = 0; // Use default kernel cache file
}
if (gOverrideKernel && kernelCacheFile[0] == 0) {
DBG("Using a non default kernel (%s) without specifying 'Kernel Cache' path, KernelCache will not be used\n", bootInfo->bootFile);
useKernelCache = false;
break;
}
if (gMKextName[0] != 0) {
DBG("Using a specific MKext Cache (%s), KernelCache will not be used\n",
gMKextName);
useKernelCache = false;
break;
}
if (gBootFileType != kBlockDeviceType)
useKernelCache = false;
} while(0);
do {
if (useKernelCache) {
ret = LoadKernelCache(kernelCacheFile, &binary);
if (ret >= 0)
break;
}
bool bootFileWithDevice = false;
// Check if bootFile start with a device ex: bt(0,0)/Extra/mach_kernel
if (strncmp(bootInfo->bootFile,"bt(",3) == 0 ||
strncmp(bootInfo->bootFile,"hd(",3) == 0 ||
strncmp(bootInfo->bootFile,"rd(",3) == 0)
bootFileWithDevice = true;
// bootFile must start with a / if it not start with a device name
if (!bootFileWithDevice && (bootInfo->bootFile)[0] != '/')
{
snprintf(bootFile, sizeof(bootFile), "/%s", bootInfo->bootFile); // append a leading /
} else {
strlcpy(bootFile, bootInfo->bootFile, sizeof(bootFile));
}
// Try to load kernel image from alternate locations on boot helper partitions.
ret = -1;
if ((gBootVolume->flags & kBVFlagBooter) && !bootFileWithDevice) {
snprintf(bootFilePath, sizeof(bootFilePath), "com.apple.boot.P%s", bootFile);
ret = GetFileInfo(NULL, bootFilePath, &flags, &time);
if (ret == -1)
{
snprintf(bootFilePath, sizeof(bootFilePath), "com.apple.boot.R%s", bootFile);
ret = GetFileInfo(NULL, bootFilePath, &flags, &time);
if (ret == -1)
{
snprintf(bootFilePath, sizeof(bootFilePath), "com.apple.boot.S%s", bootFile);
ret = GetFileInfo(NULL, bootFilePath, &flags, &time);
}
}
}
if (ret == -1) {
// No alternate location found, using the original kernel image path.
strlcpy(bootFilePath, bootFile, sizeof(bootFilePath));
}
DBG("Loading kernel: '%s'\n", bootFilePath);
ret = LoadThinFatFile(bootFilePath, &binary);
if (ret <= 0 && archCpuType == CPU_TYPE_X86_64)
{
archCpuType = CPU_TYPE_I386;
ret = LoadThinFatFile(bootFilePath, &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;
}
pause();
} 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();
}
}
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();
}
}
//==========================================================================
// 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();
}
}
int
getBootOptions(BOOL firstRun)
{
int i;
int key;
int selectIndex = 0;
int bvCount;
int nextRow;
int timeout;
BVRef bvr;
BVRef bvChain;
BVRef menuBVR;
BOOL showPrompt, newShowPrompt, isCDROM;
MenuItem * menuItems = NULL;
if ( diskIsCDROM(gBootVolume) )
isCDROM = TRUE;
else
isCDROM = FALSE;
// Allow user to override default timeout.
if ( getIntForKey(kTimeoutKey, &timeout) == NO )
{
if ( isCDROM )
timeout = kCDBootTimeout;
else
timeout = kBootTimeout;
}
if (timeout < 0) gBootMode |= kBootModeQuiet;
// If the user is holding down a modifier key,
// enter safe mode.
if ( ( readKeyboardShiftFlags() & 0x0F ) != 0 ) {
gBootMode |= kBootModeSafe;
}
// If user typed F8, abort quiet mode,
// and display the menu.
if (flushKeyboardBuffer()) {
gBootMode &= ~kBootModeQuiet;
timeout = 0;
}
clearBootArgs();
setCursorPosition( 0, 0, 0 );
clearScreenRows( 0, kScreenLastRow );
if ( ! ( gBootMode & kBootModeQuiet ) ) {
// Display banner and show hardware info.
printf( bootBanner, (bootInfo->convmem + bootInfo->extmem) / 1024 );
printVBEInfo();
}
changeCursor( 0, kMenuTopRow, kCursorTypeUnderline, 0 );
verbose("Scanning device %x...", gBIOSDev);
// Get a list of bootable volumes on the device.
bvChain = scanBootVolumes( gBIOSDev, &bvCount );
gBootVolume = menuBVR = selectBootVolume( bvChain );
// When booting from CD, default to hard
// drive boot when possible.
if ( isCDROM )
{
const char *val;
char *prompt;
int cnt;
int optionKey;
if (getValueForKey( kCDROMPromptKey, &val, &cnt )) {
cnt += 1;
prompt = malloc(cnt);
strlcpy(prompt, val, cnt);
} else {
prompt = "Press any key to start up from CD-ROM, "
"or press F8 to enter startup options.";
cnt = 0;
}
if (getIntForKey( kCDROMOptionKey, &optionKey )) {
// The key specified is a special key.
} else if (getValueForKey( kCDROMOptionKey, &val, &cnt) && cnt >= 1) {
optionKey = val[0];
} else {
// Default to F8.
optionKey = 0x4200;
}
key = countdown(prompt, kMenuTopRow, timeout);
if (cnt)
free(prompt);
clearScreenRows( kMenuTopRow, kMenuTopRow + 2 );
if (key == 0) {
// Boot from hard disk.
// Scan the original device 0x80.
BVRef hd_bvr = selectBootVolume(scanBootVolumes(0x80, 0));
if ( hd_bvr->flags & kBVFlagNativeBoot ) {
gBootVolume = hd_bvr;
gBIOSDev = hd_bvr->biosdev;
initKernBootStruct( gBIOSDev );
goto done;
}
} else {
if (optionKey < 0x100)
key = key & 0x5F;
if (key != optionKey)
goto done;
}
gBootMode &= ~kBootModeQuiet;
timeout = 0;
}
if ( gBootMode & kBootModeQuiet )
{
// No input allowed from user.
goto done;
}
if ( firstRun && ( timeout > 0 ) &&
( countdown("Press any key to enter startup options.",
kMenuTopRow, timeout) == 0 ) )
{
// If the user is holding down a modifier key,
// enter safe mode.
if ( ( readKeyboardShiftFlags() & 0x0F ) != 0 ) {
gBootMode |= kBootModeSafe;
}
goto done;
}
if ( bvCount )
{
// Allocate memory for an array of menu items.
menuItems = (MenuItem *) malloc( sizeof(MenuItem) * bvCount );
if ( menuItems == NULL ) goto done;
// Associate a menu item for each BVRef.
for ( bvr = bvChain, i = bvCount - 1, selectIndex = 0;
bvr; bvr = bvr->next, i-- )
{
getBootVolumeDescription( bvr, menuItems[i].name, 80, YES );
menuItems[i].param = (void *) bvr;
if ( bvr == menuBVR ) selectIndex = i;
}
}
// Clear screen and hide the blinking cursor.
clearScreenRows( kMenuTopRow, kMenuTopRow + 2 );
changeCursor( 0, kMenuTopRow, kCursorTypeHidden, 0 );
nextRow = kMenuTopRow;
showPrompt = YES;
// Show the menu.
if ( bvCount )
{
printf("Use \30\31 keys to select the startup volume.");
showMenu( menuItems, bvCount, selectIndex, kMenuTopRow + 2, kMenuMaxItems );
nextRow += min( bvCount, kMenuMaxItems ) + 3;
}
// Show the boot prompt.
showPrompt = (bvCount == 0) || (menuBVR->flags & kBVFlagNativeBoot);
showBootPrompt( nextRow, showPrompt );
do {
key = getc();
updateMenu( key, (void **) &menuBVR );
newShowPrompt = (bvCount == 0) ||
(menuBVR->flags & kBVFlagNativeBoot);
if ( newShowPrompt != showPrompt )
{
showPrompt = newShowPrompt;
showBootPrompt( nextRow, showPrompt );
}
if ( showPrompt ) updateBootArgs( key );
switch ( key & kASCIIKeyMask )
{
case kReturnKey:
if ( *gBootArgs == '?' )
{
if ( strcmp( gBootArgs, "?video" ) == 0 ) {
printVBEModeInfo();
} else if ( strcmp( gBootArgs, "?memory" ) == 0 ) {
printMemoryInfo();
} else {
showHelp();
}
key = 0;
showBootPrompt( nextRow, showPrompt );
break;
}
gBootVolume = menuBVR;
break;
case kEscapeKey:
clearBootArgs();
break;
default:
key = 0;
}
}
while ( 0 == key );
done:
firstRun = NO;
clearScreenRows( kMenuTopRow, kScreenLastRow );
changeCursor( 0, kMenuTopRow, kCursorTypeUnderline, 0 );
if ( menuItems ) free(menuItems);
return 0;
}
int
getBootOptions(BOOL firstRun)
{
int i;
int key;
int selectIndex = 0;
int bvCount;
int nextRow;
int timeout;
BVRef bvr;
BVRef bvChain;
BVRef menuBVR;
BOOL showPrompt, newShowPrompt;
MenuItem * menuItems = NULL;
// Allow user to override default timeout.
if ( getIntForKey(kTimeoutKey, &timeout) == NO )
{
timeout = kBootTimeout;
}
// If the user is holding down a shift key,
// abort quiet mode.
if ( ( readKeyboardShiftFlags() & 0x0F ) != 0 ) {
gBootMode &= ~kBootModeQuiet;
}
// If user typed F8, abort quiet mode,
// and display the menu.
if (flushKeyboardBuffer()) {
gBootMode &= ~kBootModeQuiet;
timeout = 0;
}
clearBootArgs();
setCursorPosition( 0, 0, 0 );
clearScreenRows( 0, kScreenLastRow );
if ( ! ( gBootMode & kBootModeQuiet ) ) {
// Display banner and show hardware info.
printf( bootBanner, (bootArgs->convmem + bootArgs->extmem) / 1024 );
printVBEInfo();
}
changeCursor( 0, kMenuTopRow, kCursorTypeUnderline, 0 );
verbose("Scanning device %x...", gBIOSDev);
// Get a list of bootable volumes on the device.
bvChain = scanBootVolumes( gBIOSDev, &bvCount );
gBootVolume = menuBVR = selectBootVolume( bvChain );
#if 0
// When booting from CD (via HD emulation), default to hard
// drive boot when possible.
if ( gBootVolume->part_type == FDISK_BOOTER &&
gBootVolume->biosdev == 0x80 )
{
// Scan the original device 0x80 that has been displaced
// by the CD-ROM.
BVRef hd_bvr = selectBootVolume(scanBootVolumes(0x81, 0));
if ( hd_bvr->flags & kBVFlagNativeBoot )
{
int key = countdown("Press C to start up from CD-ROM.",
kMenuTopRow, 5);
if ( (key & 0x5f) != 'c' )
{
gBootVolume = hd_bvr;
gBIOSDev = hd_bvr->biosdev;
initKernBootStruct( gBIOSDev );
goto done;
}
}
}
#endif
if ( gBootMode & kBootModeQuiet )
{
// No input allowed from user.
goto done;
}
if ( firstRun && ( timeout > 0 ) &&
( countdown("Press any key to enter startup options.",
kMenuTopRow, timeout) == 0 ) )
{
goto done;
}
if ( bvCount )
{
// Allocate memory for an array of menu items.
menuItems = (MenuItem *) malloc( sizeof(MenuItem) * bvCount );
if ( menuItems == NULL ) goto done;
// Associate a menu item for each BVRef.
for ( bvr = bvChain, i = bvCount - 1, selectIndex = 0;
bvr; bvr = bvr->next, i-- )
{
getBootVolumeDescription( bvr, menuItems[i].name, 80, YES );
menuItems[i].param = (void *) bvr;
if ( bvr == menuBVR ) selectIndex = i;
}
}
// Clear screen and hide the blinking cursor.
clearScreenRows( kMenuTopRow, kMenuTopRow + 2 );
changeCursor( 0, kMenuTopRow, kCursorTypeHidden, 0 );
nextRow = kMenuTopRow;
showPrompt = YES;
// Show the menu.
if ( bvCount )
{
printf("Use \30\31 keys to select the startup volume.");
showMenu( menuItems, bvCount, selectIndex, kMenuTopRow + 2, kMenuMaxItems );
nextRow += min( bvCount, kMenuMaxItems ) + 3;
}
// Show the boot prompt.
showPrompt = (bvCount == 0) || (menuBVR->flags & kBVFlagNativeBoot);
showBootPrompt( nextRow, showPrompt );
do {
key = getc();
updateMenu( key, (void **) &menuBVR );
newShowPrompt = (bvCount == 0) ||
(menuBVR->flags & kBVFlagNativeBoot);
if ( newShowPrompt != showPrompt )
{
showPrompt = newShowPrompt;
showBootPrompt( nextRow, showPrompt );
}
if ( showPrompt ) updateBootArgs( key );
switch ( key & kASCIIKeyMask )
{
case kReturnKey:
if ( *gBootArgs == '?' )
{
if ( strcmp( gBootArgs, "?video" ) == 0 ) {
printVBEModeInfo();
} else if ( strcmp( gBootArgs, "?memory" ) == 0 ) {
printMemoryInfo();
} else {
showHelp();
}
key = 0;
showBootPrompt( nextRow, showPrompt );
break;
}
gBootVolume = menuBVR;
break;
case kEscapeKey:
clearBootArgs();
break;
default:
key = 0;
}
}
while ( 0 == key );
done:
firstRun = NO;
clearScreenRows( kMenuTopRow, kScreenLastRow );
changeCursor( 0, kMenuTopRow, kCursorTypeUnderline, 0 );
if ( menuItems ) free(menuItems);
return 0;
}
//==========================================================================
// 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();
}
}