Chameleon

Chameleon Commit Details

Date:2010-09-14 15:01:48 (13 years 7 months ago)
Author:Azimutz
Commit:529
Parents: 528
Message:Returning setting arch changes from rev 520 (Chazi).
Changes:
M/branches/azimutz/CleanCut/doc-azi/CHANGES.txt
M/branches/azimutz/CleanCut/doc-azi/README.txt
M/branches/azimutz/CleanCut/i386/boot2/boot.c
M/branches/azimutz/CleanCut/i386/boot2/boot.h

File differences

branches/azimutz/CleanCut/doc-azi/CHANGES.txt
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␊
␉␉---------------//---------------//---------------␊
␊
- (rev 335)␊
- (rev 335) (REVERTED to trunk way, rev 520)␊
Change: merged the educational side of arch=i386 + the practical one of -x32, into a simple 32␊
␉␉booter flag.␊
␉␉␊
␉␉Type just 32 to get you booted into i386 arch.␊
␊
Note: -x32 was removed from trunk on rev 377.␊
␊
␊
␉␉---------------//---------------//---------------␊
␊
- (rev 335)␊
- (rev 335) (REMOVED, rev 520)␊
Change: added -legacy kernel flag. This flag tells the booter to load i386 arch before is passed to␊
␉␉the kernel. This procedure only needs to be done on Snow Leopard. -legacy tells the kernel␊
␉␉to disable "64 Bit Mode", which allows 64 bit processors to run 64 bit apps under i386␊
␉␉mach kernel.␊
␉␉␊
␉␉Type -legacy to get you booted into i386 arch, Legacy Mode.␊
␉␉Type -legacy to get you booted into Legacy Mode.␊
␊
Note: only useful on 64 bit processors.␊
␊
Note: this flag is not really needed; typing "32 -legacy" (no "") does the trick. It's just handy!␊
␊
Note: just out of curiosity and for those who don't know, Legacy Mode is in fact the mode used␊
␉␉by 32 bit "only" processors! Since OS X kernel can handle 64 bit apps even on i386 arch,␊
␉␉64 bit processors need this flag to disable any handling of 64 bit instructions, when␊
␊
␉␉---------------//---------------//---------------␊
␊
- (rev 335)␊
- (rev 335) (REVERTED to trunk way, rev 520)␊
Change: added 64 bit booter flag, to keep company to the 32 one :)␊
␊
Motif: mainly to override 32 or -legacy if they are flagged on the Boot.plist.␊
␉␉trunk. More details on the README.txt , under Chazi project.␊
␊
␉␉---------------//---------------//---------------␊
␉␉␊
- (rev 520)␊
Change: removed -legacy flag interaction with the booter and reverted 32/64 flags to the trunk way.␊
␉␉␊
␉␉Type arch=i386 to load i386 kernel architecture.␊
␉␉arch=x86_64 overrides i386 arch, if flagged on Boot.plist.␊
␉␉On Snow type arch=i386 -legacy to load i386 arch Legacy Mode.␊
␊
Motif: don't want to contribute to confusion... and laziness ;)␊
␊
␉␉---------------//---------------//---------------␊
␊
␊
␊
Azimutz␊
␊
␊
branches/azimutz/CleanCut/doc-azi/README.txt
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About the CleanCut:␊
About CleanCut:␊
␊
This is a "clean" cut of the Chazi project, it's not meant to be used!␊
If you want to test something, head to Chazi folder.␊
branches/azimutz/CleanCut/i386/boot2/boot.c
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␉␉␊
// Other status (e.g. 0) means that we should proceed with boot.␊
␊
␉␉// If cpu doesn't handle 64 bit instructions,...␊
␉␉if (!platformCPUFeature(CPU_FEATURE_EM64T) ||␊
␉␉␉// ... user forced i386 kernel architecture on cpu with "em64t"...␊
␉␉␉getValueForKey(kArchI386Flag, &val, &len, &bootInfo->bootConfig) ||␊
␉␉␉// ... or forced Legacy Mode...␊
␉␉␉getValueForKey(kLegacyModeFlag, &val, &len, &bootInfo->bootConfig))␊
␉␉// If cpu handles 64 bit instructions...␊
␉␉if (platformCPUFeature(CPU_FEATURE_EM64T))␊
␉␉{␊
␉␉␉// ... use i386 kernel arch.␊
␉␉␉archCpuType = CPU_TYPE_I386;␊
␉␉␉// use x86_64 kernel arch,...␊
␉␉␉archCpuType = CPU_TYPE_X86_64;␊
␉␉}␊
␉␉else␊
␉␉{␊
␉␉␉// Else use x86_64 kernel arch.␊
␉␉␉archCpuType = CPU_TYPE_X86_64;␊
␉␉␉// else use i386 kernel arch.␊
␉␉␉archCpuType = CPU_TYPE_I386;␊
␉␉}␊
␉␉// Override i386/-legacy, if flagged on Boot.plist.␊
␉␉if (getValueForKey(kArchX86_64Flag, &val, &len, &bootInfo->bootConfig))␊
␉␉// If user override...␊
␉␉if (getValueForKey(kArchKey, &val, &len, &bootInfo->bootConfig))␊
␉␉{␊
␉␉␉archCpuType = CPU_TYPE_X86_64;␊
␉␉␉// matches i386...␊
␉␉␉if (strncmp(val, "i386", 4) == 0)␊
␉␉␉{␊
␉␉␉␉// use i386 kernel arch.␊
␉␉␉␉archCpuType = CPU_TYPE_I386;␊
␉␉␉}␊
␉␉}␊
␉␉␊
␉␉if (!getBoolForKey (kWake, &tryresume, &bootInfo->bootConfig)) {␊
branches/azimutz/CleanCut/i386/boot2/boot.h
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#define kForceWake␉␉␉"ForceWake"␉␉␉// boot.c␊
#define kWakeImage␉␉␉"WakeImage"␉␉␉// boot.c␊
#define kProductVersion␉␉"ProductVersion"␉// boot.c␊
#define kArchKey␉␉␉"arch"␉␉␉␉// boot.c␊
#define kDSDTKey␉␉␉"DSDT"␉␉␉␉// acpi_patcher.c␊
#define kDropSSDT␉␉␉"DropSSDT"␉␉␉// acpi_patcher.c␊
#define kRestartFix␉␉␉"RestartFix" // acpi_patcher.c␊
#define kIgnoreCachesFlag␉"-f"␉␉␉␉// options.c␊
#define kIgnoreBootFileFlag␉"-F"␉␉␉␉// options.c␊
#define kSingleUserModeFlag␉"-s"␉␉␉␉// options.c␊
#define kArchI386Flag␉␉"32"␉␉␉␉// boot.c␊
#define kLegacyModeFlag␉␉"-legacy"␉␉␉// boot.c␊
#define kArchX86_64Flag␉␉"64"␉␉␉␉// boot.c␊
␊
/*␊
* Booter behavior control␊

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Revision: 529