Chameleon

Chameleon Commit Details

Date:2010-08-10 04:39:54 (8 years 11 months ago)
Author:Azimutz
Commit:337
Parents: 336
Message:Start "search algo" related stuff. This was what motivated me initially to look at Chameleon code with learning eyes. I had two problems: - the booter "always" checks selected volume for drivers, invalidating any drivers on rescue media. - the other is the Boot.plist override (loadOverrideConfig) that i was completely unaware of, until i checked the code. So, this was the first stuff that i came up with: - CanOverride=n disables overriding of the default Boot.plist (it doesn't stop the file from loading). - Extensions=/path-to-folder/ loads drivers from an alternate folder. The drives override key only got this format after i found the dsdt search also on search_and_get_acpi_fd; when i first added it was when i found that the selected volume drivers were always loaded :)
Changes:
M/branches/azimutz/CleanCut/i386/libsaio/stringTable.c
M/branches/azimutz/CleanCut/i386/boot2/drivers.c
M/branches/azimutz/CleanCut/doc/BootHelp.txt
M/branches/azimutz/CleanCut/i386/boot2/boot.h

File differences

branches/azimutz/CleanCut/doc/BootHelp.txt
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?norescan Leaves optical drive rescan mode.
Additional useful command-line options:
config=<file> Use an alternate Boot.plist file.
config=<file> Use an alternate Boot.plist file.
Extensions=<folder> Use an alternate folder with drivers, kext or mkext.
Options useful in the com.apple.Boot.plist file:
Wait=Yes|No Prompt for a key press before starting the kernel.
branches/azimutz/CleanCut/i386/libsaio/stringTable.c
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* All rights reserved.
*/
#include "boot.h"
#include "bootstruct.h"
#include "libsaio.h"
#include "libsaio.h" //Azi: this is included on boot.h - just a reminder.
#include "xml.h"
extern char *Language;
// enable canOverride flag
config->canOverride = true;
// disable canOverride. Remove?
getBoolForKey(kCanOverrideKey, &config->canOverride, &bootInfo->bootConfig);
break;
}
branches/azimutz/CleanCut/i386/boot2/boot.h
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#define kGUIKey"GUI"// boot.c
#define kBootBannerKey"Boot Banner"// options.c
#define kWaitForKeypressKey"Wait"// boot.c
/* AsereBLN: added the other keys */
#define kExtensionsKey"kext"// drivers.c
#define kUseAtiROM"UseAtiROM"// ati.c
#define kWake"Wake"// boot.c
#define kForceWake"ForceWake"// boot.c
#define kEHCIhard"EHCIhard"// usb.c
#define kDefaultPartition"Default Partition"// sys.c
#define kMD0Image"md0"// ramdisk.h
#define kCanOverrideKey"CanOverride"// stringTable.c
/*
* Flags to the booter and/or kernel - these end with "Flag".
branches/azimutz/CleanCut/i386/boot2/drivers.c
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long LoadDrivers( char * dirSpec )
{
char dirSpecExtra[1024];
const char *override_pathfolder = NULL; // path to folder
intfd = 0, len = 0;
if ( InitDriverSupport() != 0 )
return 0;
}
else if ( gBootFileType == kBlockDeviceType )
{
// First try to load Extra extensions from the ramdisk if isn't aliased as bt(0,0).
// Take in account user overriding.
if (getValueForKey(kExtensionsKey, &override_pathfolder, &len, &bootInfo->bootConfig))
{
// Specify a path to a folder, ending with / e.g. /Extra/testkext/
strcpy(dirSpecExtra, override_pathfolder);
fd = FileLoadDrivers(dirSpecExtra, 0);
if (fd >= 0) goto success_fd;
}
// First try to load Extra extensions from the ramdisk if isn't aliased as bt(0,0).
if (gRAMDiskVolume && !gRAMDiskBTAliased)
{
strcpy(dirSpecExtra, "rd(0,0)/Extra/");
}
}
success_fd:
if (gMKextName[0] != '\0')
{
verbose("LoadDrivers: Loading from [%s]\n", gMKextName);

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Revision: 337