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4325cdcc78
Resource forks are included only for .rsrc files. These are DeRezzed into their data fork. 'ckid' resources, from the Projector VCS, are not included. The Tools directory, containing mostly junk, is also excluded.
378 lines
14 KiB
Plaintext
378 lines
14 KiB
Plaintext
;
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; File: Boot1.a (formerly BootBlocks.a)
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;
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; Contains: Macintosh disk-based boot code
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;
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; This code goes into the two disk boot blocks and is loaded into RAM
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; after ROM initialization is complete and a boot diskette is in place.
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;
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; In the System file, this code lives in the 'boot' 1 resource.
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;
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; When this code is entered, the interrupt system, Memory Manager, and
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; ROM-based I/O drivers have been initialized. This code finds the
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; System file and loads the contents of its data fork, and turns over
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; the rest of the booting process to the code that it finds there.
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;
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; Original written by: Larry Kenyon
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; Written by: Darin Adler
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;
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; Copyright: © 1983-1992 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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; <10> 4/20/92 JSM Moved this file from {TidBits}BootBlocks.a to {StartMgr}Boot1.a,
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; keeping all revisions.
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; <9> 1/15/91 stb & dba; reduce size to fit in one DDP packet
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; <8> 12/11/90 dba & bbm; make the check for new ROMs check the whole version word,
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; instead of doing a compare on the low byte of the version
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; <7> 4/14/90 dba fix bug with register not set to ROMBase
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; <6> 4/11/90 dba size the system heap in the old way for Plus and SE ROMs; this
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; makes 6.X systems work properly; also unmount volume if
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; HGetVInfo or OpenWD fails; respect the maximum size from network
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; booting (small)
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; <5> 4/10/90 dba boot from a resource instead of the system file data fork; this
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; new version will handle systems with or without the new 'boot'
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; (2) resources; systems without the resource will be booted in
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; the old-fashioned way
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; <4> 3/21/90 dba all new boot blocks (the old ones were hardly used); these leave
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; most of the booting to code in the system file
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; <3> 1/4/90 dba get rid of warnings by deleting extraneous equates
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; <2> 12/28/89 dba use MAIN instead of PROC for dead code stripping; redo the
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; padding at the end of the boot blocks
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; <1.2> 6/1/89 GGD Fixed assembly errors in previous change
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; <1.1> 5/31/89 PAT Conditionalized the StartUp ("Hello") program to be
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; "Multifinder" for System 7.0 and later, and remain "Finder" for
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; all earlier Systems.
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; 5/31/89 PAT Conditionalized the StartUp (Hello) program in boot resource
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; System 7.0 and later: StartUp application = "Multifinder"
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; Earlier than System 7.0: StartUp application = "Finder"
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; <1.0> 11/16/88 CCH Added to EASE.
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; 5/24/88 EKH Update the boot blocks: bumped the version to 0x17, and set the
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; system heap size to 0x2000 (128K).
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; 3/9/87 LAK Rebuilt for inclusion in system resource file as resource of
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; type 'boot'.
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; 5/7/84 LAK reverted to early rev num to placate MacWorks.
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; 4/20/84 SC drop the font fix... (f--k IÕm brilliant)
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; 4/16/84 SC soften event number and do appl font fix
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; 2/23/84 SC Max event and file # maximums
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; 2/23/84 AJH fixed system heap size for systems > 512K
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; 2/13/84 SC thereÕs a 512 version tacked on end. Copy entire .PROC, chg to
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; boot512 and uncomment code @ H512 label
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; 1/13/84 AJH donÕt SetAppBase until after InitResources
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; 1/12/84 AJH load in INIT routines in resID order
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; 1/12/84 AJH check to see the file to launch exists
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; 1/10/84 AJH/LAK read-only permissions for Macsbug, clear less FS globals
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; 1/6/84 AJH set up applZone after file system init, set up version #
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; 1/5/84 AJH changed default names, more FCBs for bigger system heaps
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; 1/2/84 AJH added system heap CompactMem, increased size in sysHeap, new
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; version
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; 12/20/83 LAK updated version number to $0081.
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; 12/18/83 AJH fixed up mouse scaling cause the ROM uses the wrong bit...
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; 12/13/83 AJH got rid of start-up, use "INIT" resources instead
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; 12/2/83 AJH final overhaul -- 256K support, startUp file detach, etc
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; 11/13/83 AJH get rid of bootBlock deepShit alert; put in Sys.rsrc set up
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; screenRow
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; 10/13/83 LAK movescreen now uses CopyBits for Lisa compatibility; scrounged
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; bytes from various places.
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; 9/7/83 LAK added call to _ZeroScrap. optimized IO to make it fit.
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; 9/5/83 SC scrap vars point to name
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; 9/4/83 LAK added CLR.L ResErrProc for resources,
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; 8/28/83 AJH added whichAlerts option for DS alerts
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; 8/20/83 LAK Added event queue count in header. Added scrap name in header.
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; Changed param. memory for key stuff. Added param. mem. for click
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; and caret. Added DoDetach for saving code.
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; 8/17/83 LAK added init of EvtBufLen; FinderName var moved in lomem.
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; 8/9/83 AJH fixed bug releasing bootAlerts; misc cleanup
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; 7/13/83 LAK changed CLR.L Keylast to CLR.W Keylast.
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; 6/10/83 AJH added "Hello" fileName for initial launch
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; 6/8/83 AJH finderName is 12 long, not 16...
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; 6/7/83 AJH set up master block start address, ext file system fields
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; 6/5/83 AJH set up key repeat parms from parameter RAM
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; 6/4/83 AJH implemented system heap sizing and page 2 reservation
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; 6/3/83 AJH KEYM -> KEYC; detached keyProcs and deep shit alerts
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; 6/2/83 AJH cleared theScrap, set up vidPage launch param set up sysResName
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; and put MacSys there
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; 5/31/83 AJH MacSys.Code no longer necessary to boot
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; 5/27/83 AJH New Loader!
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; 4/7/83 AJH Complete rewrite of mainline; installed deep shit alerts
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; 4/1/83 AJH Made it work on 512K system
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; 2/8/83 LAK New Today.
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;
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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; equates
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load 'StandardEqu.d'
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maxBootCodeSize equ 404 ; only this many bytes across the network (net booting)
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bootBlocksSize equ 1024 ; two 512-byte disk blocks
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macro
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str16 &string
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string pascal
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@label: dc.b &string
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org @label+16
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endm
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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BootBlocks main export
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; Here is the boot block header.
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dc.w ('LK') ; boot code identifier
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bra.w Boot ; kick off the boot code
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Version
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dc.b ('D') ; executable on all machines
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dc.b $18 ; version number
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Page2Flags dc.w 0
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SystemFileName str16 'System'
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FinderFileName str16 'Finder'
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DebuggerFileName str16 'MacsBug'
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DisassemblerFileName str16 'Disassembler'
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StartupScreenFileName str16 'StartUpScreen'
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HelloFileName str16 'Finder'
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ClipboardFileName str16 'Clipboard'
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NumFCBs dc.w 10 ; number of FCBs to allocate at boot
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NumEvents dc.w 20 ; number of event queue elements
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SystemHeapSize128K dc.l $4300 ; size of system heap for 128K system (never used)
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SystemHeapSize256K dc.l $8000 ; size of system heap for 256K system (never used)
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SystemHeapSize dc.l $20000 ; size of system heap (used for pre-7.0)
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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Boot
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; There are three things that can happen here.
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; 1) Successful boot; control passed to the code in the 'boot' (2) resource.
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; 2) Old system file; no 'boot' (2) resource; continue booting; get patches from System data fork
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; 3) Failed boot; call Reboot vector.
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;
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; The main boot code below will never return in case 1, but in case 2 or 3 it will return with
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; a result code in D0. The result code is noErr for an old system file (case 2 above), and some
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; other error otherwise (case 3 above).
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;
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; This section here is used on older ROMs that do not understand the result values. It has hardcoded
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; ROM offsets of where to continue booting for cases 2 and 3.
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tst.w ROM85 ; check for very old ROMs
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bmi.s BadROM
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move.l ROMBase,a0 ; get the ROM version number
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move.w 8(a0),d1
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moveq #-2,d6 ; start before the beginning of the table
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NextROM
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addq.w #2,d6 ; advance to the next entry in the table
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move.w ROMVersionTable(d6.w),d0 ; the end of the table?
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bz.s MainBootCode ; yes, this is a new ROM that directly calls MainBootCode
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cmp.w d0,d1 ; the right ROM?
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bne.s NextROM ; no, go on to the next one
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; At this point, D6.W contains an offset into all of the ROM-specific tables.
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; Next, set the system heap size for pre-Mac II ROMs where it isnÕt growable.
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cmp.b #$76,d1 ; is this an old ROM that we must help?
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bhi.s NoSysZoneResizeNeeded ; no, system heap is already growable
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move.l SysZone,a0 ; the one true heap
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add.l SystemHeapSize,a0 ; proper size of the heap
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_SetAppBase
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move.l SysZone,TheZone ; set the zone to system heap
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NoSysZoneResizeNeeded
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; Call the boot code, and handle errors that might occur.
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addq #4,sp ; pop off the return address into the ROM
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move.l sp,d7 ; here is the place for PB calls to be used
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bsr.s MainBootCode ; do normal boot code
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move.w AfterInitResourcesTable(d6.w),d1 ; get ROM offset for continuing 6.0-style boot
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tst.w d0 ; check and see if there was an error
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bz.s JoinROM ; no error, join the ROM to continue booting
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move.w RebootTable(d6.w),d1 ; get ROM offset for failing and rebooting
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JoinROM
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move.l ROMBase,a0
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jmp 0(a0,d1.w) ; jump to the routine
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BadROM
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moveq #dsNoPatch,d0 ; canÕt boot on this ROM
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_SysError
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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ROMVersionTable
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; ROM version numbers of old ROMs that have old-fashioned boot code
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dc.w $0075 ; Plus
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dc.w $0276 ; SE
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dc.w $0178 ; II
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dc.w $037A ; Portable
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dc.w $067C ; IIci
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dc.w 0 ; end of table
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AfterInitResourcesTable
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; ROM offsets for continuing booting after InitResources
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dc.w $0A44 ; Plus
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dc.w $090E ; SE
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dc.w $0F1C ; II
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dc.w $30E6 ; Portable
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dc.w $1D96 ; IIci
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RebootTable
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; ROM offsets for Reboot routine
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dc.w $0B82 ; Plus
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dc.w $0A52 ; SE
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dc.w $11AE ; II
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dc.w $336E ; Portable
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dc.w $203E ; IIci
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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MainBootCode
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; This code will either boot the machine, and not return or return with an error in d0.
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; If the error returned is noErr (0), then it means that this is an old-style System file,
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; and the older ROM booting code should be used.
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;
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; D7 must contain a pointer to a place for a parameter block on entry to this routine.
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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GetFileNames
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; Put names of system files in low memory.
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lea SystemFileName,a0
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lea SysResName,a1
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moveq #16,d0
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_BlockMove
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lea FinderFileName,a0
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lea FinderName,a1
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moveq #16,d0
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_BlockMove
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lea ClipboardFileName,a0
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LEA ScrapTag,A1
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MOVE.L A1,ScrapName ; point ScrapName to ScrapTag
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moveq #16,d0
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_BlockMove
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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InitializeEventManager
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move.w NumEvents,d0
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_InitEvents
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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InitializeFileSystem
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move.w NumFCBs,d0
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_InitFS ; note to future generations: InitFS trashes A2!
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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MountStartupDisk
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move.l d7,a0 ; point to parameter block
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move.w BootDrive,ioDrvNum(a0) ; set up drive number
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_MountVol ; mount startup disk
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bnz.s Return ; reboot if thereÕs an error
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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FindBlessedFolder
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clr.l ioFileName(a0) ; we donÕt want the diskÕs name
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clr.w ioVolIndex(a0) ; use the vRefNum left over from MountVol
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_HGetVInfo ; see if there is a system folder
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bnz.s UnmountAndReturn ; if we fail, tell our caller
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move.l ioVFndrInfo+4(a0),a4 ; save dirID of startup app. in a4 for pre-7.0 systems
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move.l ioVFndrInfo(a0),ioWDDirID(a0) ; get the dirID of system folder
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bz.s @noFolder ; if it is 0, boot the root
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move.l #'ERIK',ioWDProcID(a0) ; magic incantation from hell
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_OpenWD ; use the vRefNum left over from MountVol
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bnz.s UnmountAndReturn ; canÕt open, tell our caller
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_SetVol ; make blessed folder the default volume
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@noFolder
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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InitializeResourceManager
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subq #2,sp ; make room for function result
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_InitResources ; open that system file
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tst.w (sp)+ ; did we get it?
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bmi.s InitResourcesFailed ; yes, weÕre OK
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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ContinueBooting
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; Check for a secondary boot resource; 'boot' (2).
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; If it is there, call it.
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;
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; Registers passed in:
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; A3 = handle to 'boot' (2) resource
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; A4 = dirID of the startup application (for pre-7.0 systems)
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; A5 = pointer to globals (SP + 400)
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; If there is none, do the old style standard boot using the code in ROM.
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subq #4,sp ; make room for the handle
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move.l #'boot',-(sp)
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move.w #2,-(sp) ; 'boot' 2 resource contains secondary boot code
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_GetResource
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move.l (sp)+,d0 ; is there a 'boot' 2 resource?
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bz.s Return ; no, return with 0 in d0 (noErr) to continue booting
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addq #4,sp ; get rid of the return address, we are not returning
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move.l d0,a3 ; get ready to start the Macintosh
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move.l (a3),a0 ; get the address of secondary boot code
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jmp (a0) ; call the secondary boot code
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; ÑÑÑ THE END ÑÑÑ
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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InitResourcesFailed
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moveq #dsSystemFileErr,d0 ; return just the right error code
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UnmountAndReturn
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move.w d0,-(sp) ; save the result code
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move.l d7,a0 ; point to parameter block
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_UnmountVol ; already set up (for HGetVInfo)
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move.w (sp)+,d0 ; get error code to return to caller
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Return
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rts
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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bootBlocksSoFar: equ *-BootBlocks
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if bootBlocksSoFar > maxBootCodeSize then
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aerror &concat('boot blocks donÕt fit: ', \
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&i2s(bootBlocksSoFar),' bytes; ', \
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'maximum ',&i2s(maxBootCodeSize),' bytes')
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else
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dcb.b bootBlocksSize-bootBlocksSoFar,$DA
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endif
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; ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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end
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