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154 lines
7.6 KiB
Plaintext
154 lines
7.6 KiB
Plaintext
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; File: BootEqu.a
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;
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; Contains: equates for the boot time environment
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;
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; Copyright: © 1989-1994 by Apple Computer, Inc., all rights reserved.
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;
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; Change History (most recent first):
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;
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; <SM8> 2/6/94 IH Added ROM version equates.
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; <SM7> 3/11/93 SAM Added sgEDiskStealFLag to boot globs that tells the MMU init
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; code whether or not to steal RAM chunks from the map.
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; <SM6> 2/20/93 SAM Added emuWarmStartConst - a new warmstart flag for the native
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; startup code. Too bad Paula is 5 characters...
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; <SM5> 8/19/92 CSS Update from Reality:
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; <11> 8/18/92 DTY Change the name of BootGlobs, which is used by the ROM Start
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; Manager to StartGlobals to avoid confusion with BootGlobals,
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; which is used by the boot code in Boot[1-3].a.
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; <SM4> 8/17/92 CCH Added scratch area in boot globs.
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; <10> 7/1/92 DTY #1031401: Bump the slop in the system heap up from 44K to 64K.
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; This gives a little more room for 'PACK' resource to get loaded
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; when the system heap is packed down in low memory conditions.
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; <9> 5/28/92 DTY #1030972: Add systemEnabledBit. 'boot' 2 will set this bit if it
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; couldn’t find any Gibblies to boot the machine. 'boot' 3 will
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; check this bit and display the “This disk is too old to be used
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; on this Macintosh.” message.
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; <8> 1/23/92 KC Roll in Terror patches from BootEqu.a. Original comments follow.
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; {2} 12/20/90 CCH Added defStackAddr equate.
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; <7> 1/17/92 DTY Take the kROMVersion equates out of this file; they’re defined
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; in LinkedPatchMacros.a
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; <6> 1/14/92 csd Move the BootGlobals record here from BootCode.a and
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; StartSystem.a so we don’t have to keep the two versions in sync.
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; NOTE: BootGlobals is not the same as BootGlobs!
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; <5> 12/30/91 RB Added space for Edisk variables in the BootGlobals record.
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; <4> 8/21/91 JSM Clean up header.
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; <3> 1/30/91 gbm sab, #38: Change the ‘already including this file’ variable to
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; all uppercase (for security reasons)
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; <1.3> 5/30/89 rwh moved warm start to near top of boot globals record. Added
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; bgTopOff, bgPhysicalTableOff.
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; <1.2> 5/26/89 rwh renamed BootGlobs fields for consistency. Added HoleSysHeap,
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; HoleLowMem.
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; <1.1> 5/16/89 rwh added warm start to the boot globals record
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; <1.0> 5/13/89 rwh New today
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;
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IF &TYPE('__INCLUDINGBOOTEQU__') = 'UNDEFINED' THEN
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__INCLUDINGBOOTEQU__ SET 1
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StartGlobals RECORD {sgRamTable},DECR
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sgTestSpace ds.l 2 ; 2 longs for diagnostics to trash
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sgRamTable equ * ; table of start/size physical RAM, -1 ended
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sgMaxChunks equ 8 ; maximum # RAM chunks we can accomodate
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sgWarmStart ds.l 1 ; warm start constant
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sgTopOff ds.l 1 ; offset to top of boot globals area
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sgAllocOff ds.l 1 ; offset to bottom of allocated area
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sgPhysicalTableOff ds.l 1 ; offset to physical space table (for VM et al)
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sgTotalRAM ds.l 1 ; total RAM in the system
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sgPhys2Log ds.l 1 ; physical to logical offset for MMU tables
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sgMMFlags ds.b 1 ; memory manager start mode flags
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sgTypeMMU ds.b 1 ; type of MMU
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sg24Info ds.b MMUConfigInfo ; 24 bit mode MMU info
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sg32Info ds.b MMUConfigInfo ; 32 bit mode MMU info
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sgRamDiskSize ds.l 1 ; size of RAM disk, if any <5> rb
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sgRamDiskBase ds.l 1 ; logical base of RAM disk, if any <5> rb
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sgScratch ds.l 4 ; 4 longs of scratch space <SM11>
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sgEDiskStealFlag ds.b 1 ; 1 byte flag to tell INIT code to steal RAM for the EDisk <SM7>
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sgAlign ds.b 1 ; alignment
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sgBottom equ * ; last field
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ENDR
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HoleSysHeap equ $38000000 ; start of system heap when using 'black hole'
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HoleLowMem equ $10000 ; real RAM space for low mem w/'black hole'
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defStackAddr EQU $180000 ; start stack at 1.5M for systems with ≥2 meg {2}
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; From StartSystem.a and BootCode.a: <6>
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BootGlobals record -400 ; offsets from A5 for boot time globals
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initialSP equ * ; value of stack pointer during boot
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paramBlock ds.b 194 ; 194 parameter block for file system and driver calls
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quickDrawGlobals ds.b QDGlobals ; 206 QuickDraw globals
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initialA5 equ * ; this is a place holder; it must be at offset 0
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quickDrawGlobalsPtr ds.l 1 ; 4 pointer to QuickDraw globals
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physicalMemTop ds.l 1 ; 4 MemTop as set from diagnostics
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logicalMemTop ds.l 1 ; 4 MemTop after loading VM
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postBootNewPtrStartup ds.l 1 ; 4 pointer to implementation of NewPtrStartup
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bufPtrLimit ds.l 1 ; 4 barrier; how low bufPtr is allowed to go
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resetFlag ds.w 1 ; 2 clear if don’t reset; -1 if do reset
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reservedForAfterBoot ds.l 1 ; 4 minSysHeapFreeAfterBoot until launch time
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ds.b 86 ; 86 padding (so we match the ROM boot code)
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port ds.b portRec ; 108 GrafPort already opened by the boot code
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fileName ds.b 256 ; 256 file name used by INIT file opening code
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ds.b 148 ; 148 padding (so we match the ROM boot code)
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initialA6 equ * ; value of A6 that the ROM boot code sets up
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bootBlocks ds.b 1024 ; 1024 the boot blocks themselves
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lowestBufPtr equ * ; here is the lowest that INITs can use
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fileBuffer ds.b 524 ; 524 buffer used to load StartupScreen, MacsBug, etc.
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size equ *-initialSP ; how big is this record, anyway?
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endr
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emuWarmStartConst equ 'SamB' ; Emulated Mac Warmstart constant <SM6>
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processMgrCode0 equ -16470 ; resource ID of jump table for the Process Mgr.
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; the following are the sizes of things
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; the boot code has far-reaching responsibilities for making sure there is enough RAM
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minRAMNeededToBoot equ 3*512*1024 ; 1.5 MB You just gotta have it.
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; MacsBug sizes
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debuggerGlobalSize equ 1*1024 ; size above BufPtr needed by MacsBug
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; system heap sizes
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initialSysHeapSize equ 700*1024 ; for Finder and 1 cdev
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minSysHeapFreeForINIT equ 24*1024 ; minimum amount that INITs need in the system heap
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minSysHeapFreeAfterBoot equ 100*1024 ; minimum amount that must remain free in system heap
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sysHeapFreeSpaceSlop equ 16*1024 ; slop for MakeSysFree routine
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minSysHeapFreeSpace equ 64*1024 ; this goes into emMinSysHeapFreeSpace for use by Finder & Process Mgr
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; size of heap used to load INITs, script systems, and
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minBootAppHeapSize equ 32*1024 ; smallest heap for INIT loading
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; Process Mgr. sizes
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processMgrStackSize equ 8*1024 ; stack size
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minProcessMgrSpace equ 500*1024 ; stack & heap size for Finder and 1 cdev
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;
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elbowRoomCacheCantHave equ 400*1024 ; special-case adjustment to limit File Cache’s use of BufPtr <38>
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systemEnabledBit equ 2 ; bit number to prevent booting the System on an unknown machine.
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extensionsEnabledBit equ 5 ; bit number to disable extensions *** move to SysEqu.a?
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ExtensionsEnabledByte equ $B20 ; byte to disable extensions *** move to SysEqu.a?
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CurNamePtr equ CurApName+4 ; pointer to name of currently executing file
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; IIci/Terror/Horror ROM minors ($67C)
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kROMMajorIIci equ $67C ; IIci, Horror, Terror, Kaos
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kROMMinorTERROR equ $15
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kROMMinorTERROR2 equ $17 ; Zydeco's flavor of TERROR
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kROMMinorDart equ $18 ; PowerBook 160,165,165c,180,180c version of HORROR.
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kROMMinorSlice equ $24 ; Slice’s version of HORROR.
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kROMMinorPO equ $26 ; Primus/Optimus HORROR.
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kROMMinorEscher equ $27 ; PowerBook 270c’s ROM, a revision of HORROR.
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kROMMinorYeager equ $29 ; Yeager’s flavor of HORROR.
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kROMMinorBlackBird equ $30 ; BlackBird is using Kaos, which is a 2MB overpatch of HORROR.
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; SuperMario ROM minors ($77D)
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kROMMajorSuperMario equ $77D ; SuperMario
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kROMMinorPDM equ $20 ; PDM, LAW, Cold Fusion using SuperMario.
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kROMMinorSTP equ $21 ; STP using SuperMario.
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ENDIF ; ...already included
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