mirror of
https://github.com/garrettsworkshop/MacIIROMDiskDriver.git
synced 2025-01-14 02:31:51 +00:00
Build modified bbraun ROM disk source too
This commit is contained in:
Zane Kaminski
parent
4b4931b243
commit
0fc75fbbac
42
Makefile
42
Makefile
@ -7,7 +7,7 @@ LD=$(RETRO68)/bin/m68k-apple-macos-ld
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OBJCOPY=$(RETRO68)/bin/m68k-apple-macos-objcopy
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OBJDUMP=$(RETRO68)/bin/m68k-apple-macos-objdump
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all: bin/rom.bin obj/rdisk.s obj/rdisk_reloc.s obj/rdisk_rel.sym obj/rdisk_abs.sym bin/rdisk_nonreloc.bin
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all: bin/rom.bin obj/rdisk.s obj/rdisk_reloc.s obj/rdisk_rel.sym obj/rdisk_abs.sym bin/rdisk_nonreloc.bin bin/rom_braun.bin obj/rdisk_braun.s obj/rdisk_braun_reloc.s obj/rdisk_braun_rel.sym obj/rdisk_braun_abs.sym bin/rdisk_braun_nonreloc.bin
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obj:
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mkdir obj
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@ -39,6 +39,32 @@ bin/rdisk.bin: bin obj/rdisk_reloc.o
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bin/rdisk_nonreloc.bin: bin obj/rdisk.o
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$(OBJCOPY) -O binary obj/rdisk.o $@
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obj/rdisk_braun.o: rdisk_braun.c obj
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$(CC) -c -O1 $< -o $@
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obj/rdisk_braun_reloc.o: obj obj/rdisk_braun.o
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$(LD) -Ttext=40851D70 -o $@ obj/rdisk_braun.o
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obj/rdisk_braun.s: obj obj/rdisk_braun.o
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$(OBJDUMP) -d obj/rdisk_braun.o > $@
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obj/rdisk_braun_reloc.s: obj obj/rdisk_braun_reloc.o
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$(OBJDUMP) -d obj/rdisk_braun_reloc.o > $@
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obj/rdisk_braun_rel.sym: obj obj/rdisk_braun.o
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$(OBJDUMP) -t obj/rdisk_braun.o > $@
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obj/rdisk_braun_abs.sym: obj obj/rdisk_braun_reloc.o
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$(OBJDUMP) -t obj/rdisk_braun_reloc.o > $@
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bin/rdisk_braun.bin: bin obj/rdisk_braun_reloc.o
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$(OBJCOPY) -O binary obj/rdisk_braun_reloc.o $@
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bin/rdisk_braun_nonreloc.bin: bin obj/rdisk_braun.o
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$(OBJCOPY) -O binary obj/rdisk_braun.o $@
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bin/rom.bin: bin bin/rdisk.bin obj/rdisk_rel.sym
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cp baserom_braun_2m_0.9.bin bin/rom.bin
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cat bin/rdisk.bin | dd of=bin/rom.bin bs=1 seek=335266 skip=50 conv=notrunc # Copy driver code
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@ -53,6 +79,20 @@ bin/rom.bin: bin bin/rdisk.bin obj/rdisk_rel.sym
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# Copy ROM disk
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dd if=RDisk1M5 of=bin/rom.bin bs=1024 seek=512 count=1536 conv=notrunc
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bin/rom_braun.bin: bin bin/rdisk_braun.bin obj/rdisk_braun_rel.sym
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cp baserom_braun_2m_0.9.bin bin/rom_braun.bin
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cat bin/rdisk_braun.bin | dd of=bin/rom_braun.bin bs=1 seek=335266 skip=50 conv=notrunc # Copy driver code
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printf '\x78' | dd of=bin/rom_braun.bin bs=1 seek=335168 count=1 conv=notrunc # Set resource flags
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printf '\x4F' | dd of=bin/rom_braun.bin bs=1 seek=335216 count=1 conv=notrunc # Set driver flags
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# Copy entry points
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cat obj/rdisk_braun_rel.sym | grep "Open" | cut -c5-8 | xxd -r -p - | dd of=bin/rom_braun.bin bs=1 seek=335224 count=2 conv=notrunc
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cat obj/rdisk_braun_rel.sym | grep "Prime" | cut -c5-8 | xxd -r -p - | dd of=bin/rom_braun.bin bs=1 seek=335226 count=2 conv=notrunc
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cat obj/rdisk_braun_rel.sym | grep "Control" | cut -c5-8 | xxd -r -p - | dd of=bin/rom_braun.bin bs=1 seek=335228 count=2 conv=notrunc
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cat obj/rdisk_braun_rel.sym | grep "Status" | cut -c5-8 | xxd -r -p - | dd of=bin/rom_braun.bin bs=1 seek=335230 count=2 conv=notrunc
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cat obj/rdisk_braun_rel.sym | grep "Close" | cut -c5-8 | xxd -r -p - | dd of=bin/rom_braun.bin bs=1 seek=335232 count=2 conv=notrunc
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# Copy ROM disk
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dd if=RDisk1M5 of=bin/rom_braun.bin bs=1024 seek=512 count=1536 conv=notrunc
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.PHONY: clean
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clean:
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rm -fr bin obj
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229
rdisk_braun.c
Normal file
229
rdisk_braun.c
Normal file
@ -0,0 +1,229 @@
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#include <Memory.h>
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#include <Devices.h>
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#include <Files.h>
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#include <Disks.h>
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#include <Errors.h>
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#include <Events.h>
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#include <OSUtils.h>
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#define NEED_DRVSTAT 1
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#define NEED_ACCRUN 1
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/* If NEED_ACCRUN is set, the dNeedTime (0x60) flag should be set in the header, and the
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* delayticks field in the header should be set to something sensible.
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*/
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#define kRomDrvSize (0x00180000L)
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#define kRomDrvLocation ((char*)0x40880000)
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#define BufPtr ((Ptr*)0x10C)
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#define MemTop ((Ptr*)0x108)
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// This function is here just to put padding at the
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// beginning of the output file
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void BBraunROMDisk() {
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__asm__ __volatile__
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(
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t"
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".long 0x00000000\n\t":::);
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}
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typedef void (*RomDrvCopyFunc)(unsigned char *, unsigned char *, unsigned long);
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struct RomDrvContext {
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DrvSts2 drvsts;
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Ptr origcopyfunc;
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Ptr origdisk; /* keep unstripped pointers for Dispose*/
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RomDrvCopyFunc copyfunc;
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unsigned char * disk;
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char initialized;
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char useram;
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char ram24;
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char alreadyalloced;
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};
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typedef struct RomDrvContext RomDrvContext;
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OSErr RomDrvAddDrive(short drvrRefNum, short drvNum, DrvQElPtr dq) {
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__asm__ __volatile__
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(
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"clr.l %%D0 \n\t"
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"move.w %1,%%D0 \n\t"
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"swap %%D0 \n\t"
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"move.w %0,%%D0 \n\t"
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"movea.l %2,%%A0 \n\t"
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".word 0xA04E \n\t"
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: /* outputs */
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: "g"(drvrRefNum), "g"(drvNum), "g"(dq) /* inputs */
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: /* clobbered */);
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}
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void RomDrvCopy(unsigned char *source, unsigned char *dest, unsigned long count) {
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signed char mode = true32b;
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SwapMMUMode(&mode);
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BlockMove(source, dest, count);
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SwapMMUMode(&mode);
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}
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#pragma parameter __D0 RomDrvOpen(__A0, __A1)
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short RomDrvOpen(IOParamPtr p, DCtlPtr d) {
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DrvSts2 *dsptr;
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DrvQElPtr dq;
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int drvnum = 1;
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RomDrvContext *ctx;
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// Reference BBraunROMDisk() just so it ends up
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// at the beginning of the output file
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StripAddress(&BBraunROMDisk);
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for(dq = (DrvQElPtr)(GetDrvQHdr())->qHead; dq; dq = (DrvQElPtr)dq->qLink) {
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if(dq->dQDrive >= drvnum) drvnum = dq->dQDrive+1;
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}
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d->dCtlStorage = NewHandleSysClear(sizeof(RomDrvContext));
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HLock(d->dCtlStorage);
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ctx = *(RomDrvContext**)d->dCtlStorage;
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ctx->origcopyfunc = NewPtrSys(64);
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if(!ctx->origcopyfunc) {
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return openErr;
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}
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BlockMove(&RomDrvCopy, ctx->origcopyfunc, 64);
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ctx->copyfunc = (RomDrvCopyFunc)StripAddress(ctx->origcopyfunc);
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dsptr = &ctx->drvsts;
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dsptr->writeProt = 0xF0;
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dsptr->diskInPlace = 8;
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dsptr->dQDrive = drvnum;
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dsptr->dQRefNum = d->dCtlRefNum;
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dsptr->driveSize = (kRomDrvSize/512L) & 0xFFFF;
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dsptr->driveS1 = ((kRomDrvSize/512L) & 0xFFFF0000) >> 16;
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RomDrvAddDrive(dsptr->dQRefNum, drvnum, (DrvQElPtr)&dsptr->qLink);
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return noErr;
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}
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#pragma parameter __D0 RomDrvPrime(__A0, __A1)
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short RomDrvPrime(IOParamPtr p, DCtlPtr d) {
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long off;
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RomDrvContext *ctx;
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if(!d->dCtlStorage) return offLinErr;
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ctx = *(RomDrvContext**)d->dCtlStorage;
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if(!ctx->initialized) {
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ctx->initialized = 1;
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ctx->drvsts.writeProt = 0xFF;
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ctx->origdisk = NULL;
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ctx->disk = (unsigned char *)kRomDrvLocation;
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}
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switch(p->ioPosMode & 0x000F) {
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case fsAtMark: off = d->dCtlPosition; break;
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case fsFromStart: off = p->ioPosOffset; break;
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case fsFromMark: off = d->dCtlPosition + p->ioPosOffset; break;
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default: break;
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}
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if((p->ioTrap & 0x00ff) == aRdCmd) {
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/* bit 6 indicates this should be a verify operation */
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if(!(p->ioPosMode & 0x40)) {
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unsigned long count = p->ioReqCount;
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if(ctx->drvsts.writeProt == 0 && ctx->origdisk) {
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// If the data is in RAM, we can access it in 24bit mode, and can
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// avoid the overhead of the extra function call and 2 MMU switches.
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if (!ctx->ram24) {
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BlockMoveData(ctx->disk + off, p->ioBuffer, count);
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} else {
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ctx->copyfunc((unsigned char *)(ctx->disk + off), (unsigned char *)StripAddress(p->ioBuffer), count);
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}
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} else {
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ctx->copyfunc((unsigned char *)(ctx->disk + off), (unsigned char*)StripAddress(p->ioBuffer), count);
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}
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p->ioActCount = count;
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d->dCtlPosition = off + count;
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p->ioPosOffset = d->dCtlPosition;
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}
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return noErr;
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} else if(((p->ioTrap & 0x00ff) == aWrCmd) && (ctx->drvsts.writeProt == 0)) {
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if (!ctx->ram24) {
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BlockMoveData(p->ioBuffer, ctx->disk + off, p->ioReqCount);
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} else {
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ctx->copyfunc((unsigned char *)StripAddress(p->ioBuffer), (unsigned char *)(ctx->disk + off), p->ioReqCount);
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}
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p->ioActCount = p->ioReqCount;
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d->dCtlPosition = off + p->ioReqCount;
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p->ioPosOffset = d->dCtlPosition;
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return noErr;
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}
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return wPrErr;
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}
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#pragma parameter __D0 RomDrvClose(__A0, __A1)
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short RomDrvClose(IOParamPtr p, DCtlPtr d) {
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RomDrvContext *ctx;
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if(!d->dCtlStorage) return noErr;
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ctx = *(RomDrvContext**)d->dCtlStorage;
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if(ctx->origdisk) DisposePtr(ctx->origdisk);
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DisposePtr(ctx->origcopyfunc);
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HUnlock(d->dCtlStorage);
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DisposeHandle(d->dCtlStorage);
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d->dCtlStorage = NULL;
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return noErr;
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}
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#pragma parameter __D0 RDiskControl(__A0, __A1)
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OSErr RDiskControl(IOParamPtr p, DCtlPtr d) {
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#if NEED_ACCRUN
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if(((CntrlParamPtr)p)->csCode == accRun) {
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RomDrvContext *ctx;
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if(!d->dCtlStorage) return noErr;
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ctx = *(RomDrvContext**)d->dCtlStorage;
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if(ctx->useram && !ctx->origdisk) {
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if (*((unsigned char *)0x0CB2)) { /* if we're already in 32-bit mode, allocate like this */
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ctx->origdisk = NewPtrSys(kRomDrvSize);
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if(ctx->origdisk) {
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ctx->disk = (unsigned char *)StripAddress((Ptr)ctx->origdisk);
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ctx->copyfunc((unsigned char *)kRomDrvLocation, ctx->disk, kRomDrvSize);
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}
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} else {
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ctx->ram24 = 1;
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ctx->origdisk = NewPtrSys(1); /* just a dummy pointer to make rest of code work */
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ctx->disk = (unsigned char *)(8*1048576);
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ctx->copyfunc((unsigned char *)kRomDrvLocation, ctx->disk, kRomDrvSize);
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}
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}
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d->dCtlDelay = 0;
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d->dCtlFlags &= ~dNeedTimeMask;
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return noErr;
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}
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#endif
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return controlErr;
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}
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#pragma parameter __D0 RDiskStatus(__A0, __A1)
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OSErr RDiskStatus(IOParamPtr p, DCtlPtr d) {
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#if NEED_DRVSTAT
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if(!d->dCtlStorage) return statusErr;
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if(((CntrlParamPtr)p)->csCode == drvStsCode) {
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BlockMove(*d->dCtlStorage, &((CntrlParamPtr)p)->csParam, sizeof(DrvSts2));
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return noErr;
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}
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#endif
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return statusErr;
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}
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