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Reverse the two new functions in StartInit.a
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Elliot Nunn
parent
bbb73bc9b7
commit
c6a027b810
@ -606,4 +606,12 @@ gestaltInternalDisplay EQU 'idsp' ; slot number of internal display location
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ENDIF ; ...already included
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ENDIF ; ...already included
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gestaltPowerPCProcessorFeatures EQU 'ppcf' ; Optional PowerPC processor features
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gestaltPowerPCHasGraphicsInstructions EQU 0 ; has fres, frsqrte, and fsel instructions
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gestaltPowerPCHasSTFIWXInstruction EQU 1 ; has stfiwx instruction
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gestaltPowerPCHasSquareRootInstructions EQU 2 ; has fsqrt and fsqrts instructions
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gestaltPowerPCHasDCBAInstruction EQU 3 ; has dcba instruction
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gestaltPowerPCHasVectorInstructions EQU 4 ; has vector instructions
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gestaltPowerPCHasDataStreams EQU 5 ; has dst, dstt, dstst, dss, and dssall instructions
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@ -1135,6 +1135,8 @@ ioNuBusTTxlat EQU $500FC040 ; I/O space and nuBus $6-$7 with serialized wri
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IMPORT INITSCSIBOOT
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ENDIF
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IMPORT GetRealProc ; GetReal.a
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MyROM MAIN Export
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@ -1492,7 +1494,7 @@ BootRetry MOVE #$2700,SR ; disable interrupts
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IMPORT InterC_1cc0_MoveUnivInfoToSysHeap
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BSR.L InterC_1cc0_MoveUnivInfoToSysHeap
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BSR.L initGestalt ; initialize Gestalt <SM39>
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BSR.L FiddleWithEmulator
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BSR.L CreateAltiVecBufForEmulator
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BSR.L InitIntHandler ; initialize interrupt vectors and dispatch tables
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BSR CheckForEgretOrCuda ; Do we have an Egret/Caboose/Cuda? <mc2>
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@ -1630,7 +1632,7 @@ BootRetry MOVE #$2700,SR ; disable interrupts
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BEQ.B @dont
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@definitely
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BSR NewStartInitFunc
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BSR SetScsiIdFromPram ; taken from SCSIMgrInit.a
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BSR.L InitSCSIMgr ; Init old and new SCSI Mgrs
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@dont
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@ -3927,62 +3929,105 @@ CheckForEgretOrCuda ; <T2>
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NewStartInitFunc
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;ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
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;
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; Taken from SCSIMgrInit.a
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;
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;ÑÑÑ Do PRAM stuff : Bytes 2 & 3 are allocated for SCSI stuff
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;
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; ÑÑÑ Byte 2 ÑÑÑ
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; bit - def: meaning
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; 7 - 0 : If set, disable the SCSIReset on machine reset
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; 6 - 1 : unused
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; 5 - 0 : unused
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; 4 - 0 : unused (on PDM debug, affects Read DMA reads)
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; 3 - 1 : validity bit (both must be 1 for bytes 2&3 to be valid, else init them)
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; 2 - 1 : \
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; 1 - 1 : Ñ Host ID (i.e. SCSI ID of this Macintosh)
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; 0 - 1 : /
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;
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; ÑÑÑ Byte 3 ÑÑÑ
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; 7 - 0 : unused
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; 6 - 1 : unused
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; 5 - 0 : unused
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; 4 - 0 : unused (on PDM debug, affects Read DMA writes)
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; 3 - 1 : validity bit (see above)
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; 2 - 0 : \
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; 1 - 0 : Ñ "Internal Drive" ID (i.e. zero generally because nobody changes this)
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; 0 - 0 : /
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;
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SetScsiIdFromPram
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; 1148
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SubQ.L #$2, A7
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MoveA.L A7, A0
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Move.L #$20002, D0
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_ReadXPRam
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Move (A7), D0
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AndI #$808, D0
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CmpI #$808, D0
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BEQ.B @skipwrite
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Move #$4F48, (A7)
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MoveA.L A7, A0
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Move.L #$20002, D0
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_WriteXPRam
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@skipwrite
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Move (A7)+, D0
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LsR #$8, D0
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AndI #$7, D0
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MoveQ.L #$1, D1
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LsL.B D0, D1
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Move.B D1, (SCSIDrvrs)
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Rts
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subq.l #2,sp ; make space for PRAM SCSI id <v1.4>
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move.l sp,a0 ; address of PRAM return buffer
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move.l #$00020002,d0 ; read 2 bytes of PRAM at offset 2 <C613>
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_ReadXPRam ; get the SCSI id
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move.w (sp),d0 ; check high bits for validity <A324>
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and.w #$0808,d0 ; look at upper bit in lower nibble <SM15> pdw
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cmp.w #$0808,d0 ; equal to magic pattern? <C613>
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beq.s @GotID ; yes, so use those SCSI IDs <A324>
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;--- if invalid, reinitialize values to defaults
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@SetID
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move.w #(($48+7)<<8) + ($48+0),(sp) ; defaults: CPU=7,hd=0 <C613>
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move.l sp,a0 ; address of new PRAM value
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move.l #$00020002,d0 ; write 2 bytes of PRAM to offset 2 <C613>
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_WriteXPRam ; save the IDs in parameter RAM <C613>
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@GotID
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move.w (sp)+, d0
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lsr.w #8,d0 ; get CPU SCSI ID for shift count
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and.w #$7,d0 ; mask all but the ID bit
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moveq.l #1,d1 ; 1 << SCSI id
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lsl.b d0,d1 ; form the SCSI id mask
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move.b d1,SCSIDrvrs ; clear all SCSI driver flags but our own
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rts
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FiddleWithEmulator
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CreateAltiVecBufForEmulator
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; 1180
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Move.L #'ppcf', D0
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OnePage equ $1000
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move.l #gestaltPowerPCProcessorFeatures, d0
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_Gestalt
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BNE.B @done
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Move.L A0, D0
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AndI.L #$10, D0
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BEQ.B @done
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Move.L #$2000, D0
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_NewPtrSysClear
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BNE.B @done
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Lea.L ($68FFF000).L, A2
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Move.L A0, D0
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AddI.L #$FFF, D0
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AndI.L #$FFFFF000, D0
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Move.L D0, $E0(A2)
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Move.L #$FE000000, $E8(A2)
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Clr.L $EC(A2)
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bne.s @done
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MoveA.L D0, A0
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MoveA #$1000, A1
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MoveQ.L #$2, D0
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_MemoryDispatch
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move.l a0, d0
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and.l #1<<gestaltPowerPCHasVectorInstructions, d0
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bz.s @done
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move.l #OnePage * 2, d0 ; allocate 2 pages but only use one
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_NewPtr ,sys,clear
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bne.s @done
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lea $68FFF000, a2 ; emulator data page
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move.l a0, d0 ; align up to page boundary
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add.l #OnePage-1, d0
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and.l #-OnePage, d0
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move.l d0, $E0(a2) ; save logical ptr
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move.l #$FE000000, $E8(a2)
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clr.l $EC(a2)
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move.l d0, a0
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move.l #OnePage, a1
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_LockMemory
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bsr.l GetRealProc
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bmi.s @done
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move.l a0, $E4(a2) ; save physical ptr
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import GETREALPROC
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bsr.l GETREALPROC
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BMI.B @done
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Move.L A0, $E4(A2)
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@done
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Rts
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rts
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