mirror of
https://github.com/garrettsworkshop/ROMBUSDriver.git
synced 2024-12-27 02:30:12 +00:00
Make write-only
This commit is contained in:
Zane Kaminski
parent
776be92c56
commit
55bc0eaeda
96
Makefile
96
Makefile
@ -5,20 +5,12 @@ LD=$(PREFIX)-ld
|
||||
OBJCOPY=$(PREFIX)-objcopy
|
||||
OBJDUMP=$(PREFIX)-objdump
|
||||
|
||||
all: bin/IIxIIcxSE30/IIxIIcxSE30_8M.bin bin/IIci/IIci_8M.bin bin/IIfx/IIfx_8M.bin bin/IIsi/IIsi_8M.bin bin/GWSys71_8M.bin bin/GWSys6_8M.bin bin/GWSys7Diagnostics_8M.bin obj/rdisk.s obj/driver.s obj/driver_abs.sym
|
||||
all: bin/ROMBUS.bin obj/rdisk.s obj/driver.s obj/driver_abs.sym
|
||||
|
||||
obj:
|
||||
mkdir $@
|
||||
bin:
|
||||
mkdir $@
|
||||
bin/IIsi: bin
|
||||
mkdir $@
|
||||
bin/IIxIIcxSE30: bin
|
||||
mkdir $@
|
||||
bin/IIci: bin
|
||||
mkdir $@
|
||||
bin/IIfx: bin
|
||||
mkdir $@
|
||||
|
||||
|
||||
obj/entry.o: entry.s obj
|
||||
@ -66,7 +58,7 @@ bin/baserom_romdisk_noramtest.bin: bin bin/baserom_romdisk_ramtest.bin
|
||||
printf '\x4E\xD6' | dd of=$@ bs=1 seek=289016 count=2 conv=notrunc
|
||||
|
||||
|
||||
bin/GWSys71_8M.bin: bin bin/baserom_romdisk_noramtest.bin disks/RDisk7M5.dsk
|
||||
bin/ROMBUS.bin: bin bin/baserom_romdisk_noramtest.bin disks/RDisk7M5.dsk
|
||||
# Copy base rom with ROM disk driver
|
||||
cp bin/baserom_romdisk_noramtest.bin $@
|
||||
# Patch ROM disk driver parameter table
|
||||
@ -77,90 +69,6 @@ bin/GWSys71_8M.bin: bin bin/baserom_romdisk_noramtest.bin disks/RDisk7M5.dsk
|
||||
# Copy ROM disk image
|
||||
dd if=disks/RDisk7M5.dsk of=$@ bs=1024 seek=512 conv=notrunc
|
||||
|
||||
|
||||
bin/GWSys6_4M.bin: bin bin/baserom_romdisk_noramtest.bin disks/RDisk3M5.dsk
|
||||
# Copy base rom with ROM disk driver
|
||||
cp bin/baserom_romdisk_noramtest.bin $@
|
||||
# Patch ROM disk driver parameter table
|
||||
printf '\xFF\xFF\xFF\xFF' | dd of=$@ bs=1 seek=335260 count=4 conv=notrunc # Patch CDR patch offset
|
||||
printf '\x00\x00\x00\x00' | dd of=$@ bs=1 seek=335268 count=4 conv=notrunc # Patch CDR name address
|
||||
printf '\x44' | dd of=$@ bs=1 seek=335273 count=1 conv=notrunc # Patch CDR disable byte
|
||||
printf '\x00\x38\x00\x00' | dd of=$@ bs=1 seek=335276 count=4 conv=notrunc # Patch ROM disk size
|
||||
# Copy ROM disk image
|
||||
dd if=disks/RDisk3M5.dsk of=$@ bs=1024 seek=512 conv=notrunc
|
||||
|
||||
bin/GWSys6_8M.bin: bin/GWSys6_4M.bin
|
||||
cat bin/GWSys6_4M.bin > $@
|
||||
cat bin/GWSys6_4M.bin >> $@
|
||||
|
||||
|
||||
bin/GWSys7Diagnostics_8M.bin: bin bin/baserom_romdisk_ramtest.bin disks/RDisk7M5-diagnostics.dsk
|
||||
# Copy base rom with ROM disk driver
|
||||
cp bin/baserom_romdisk_ramtest.bin $@
|
||||
# Patch ROM disk driver parameter table
|
||||
printf '\xFF\xFF\xFF\xFF' | dd of=$@ bs=1 seek=335260 count=4 conv=notrunc # Patch CDR patch offset
|
||||
printf '\x00\x00\x00\x00' | dd of=$@ bs=1 seek=335268 count=4 conv=notrunc # Patch CDR name address
|
||||
printf '\x44' | dd of=$@ bs=1 seek=335273 count=1 conv=notrunc # Patch CDR disable byte
|
||||
printf '\x00\x78\x00\x00' | dd of=$@ bs=1 seek=335276 count=4 conv=notrunc # Patch ROM disk size
|
||||
# Copy ROM disk image
|
||||
dd if=disks/RDisk7M5-diagnostics.dsk of=$@ bs=1024 seek=512 conv=notrunc
|
||||
|
||||
|
||||
bin/IIxIIcxSE30/IIxIIcxSE30_512k.bin: bin/IIxIIcxSE30 roms/IIxIIcxSE30.bin
|
||||
cat roms/IIxIIcxSE30.bin > $@; cat roms/IIxIIcxSE30.bin >> $@
|
||||
|
||||
bin/IIxIIcxSE30/IIxIIcxSE30_1M.bin: bin/IIxIIcxSE30 bin/IIxIIcxSE30/IIxIIcxSE30_512k.bin
|
||||
cat bin/IIxIIcxSE30/IIxIIcxSE30_512k.bin > $@; cat bin/IIxIIcxSE30/IIxIIcxSE30_512k.bin >> $@
|
||||
|
||||
bin/IIxIIcxSE30/IIxIIcxSE30_2M.bin: bin/IIxIIcxSE30 bin/IIxIIcxSE30/IIxIIcxSE30_1M.bin
|
||||
cat bin/IIxIIcxSE30/IIxIIcxSE30_1M.bin > $@; cat bin/IIxIIcxSE30/IIxIIcxSE30_1M.bin >> $@
|
||||
|
||||
bin/IIxIIcxSE30/IIxIIcxSE30_4M.bin: bin/IIxIIcxSE30 bin/IIxIIcxSE30/IIxIIcxSE30_2M.bin
|
||||
cat bin/IIxIIcxSE30/IIxIIcxSE30_2M.bin > $@; cat bin/IIxIIcxSE30/IIxIIcxSE30_2M.bin >> $@
|
||||
|
||||
bin/IIxIIcxSE30/IIxIIcxSE30_8M.bin: bin/IIxIIcxSE30 bin/IIxIIcxSE30/IIxIIcxSE30_4M.bin
|
||||
cat bin/IIxIIcxSE30/IIxIIcxSE30_4M.bin > $@; cat bin/IIxIIcxSE30/IIxIIcxSE30_4M.bin >> $@
|
||||
|
||||
|
||||
bin/IIci/IIci_1M.bin: bin/IIci roms/IIci.bin
|
||||
cat roms/IIci.bin > $@; cat roms/IIci.bin >> $@
|
||||
|
||||
bin/IIci/IIci_2M.bin: bin/IIci bin/IIci/IIci_1M.bin
|
||||
cat bin/IIci/IIci_1M.bin > $@; cat bin/IIci/IIci_1M.bin >> $@
|
||||
|
||||
bin/IIci/IIci_4M.bin: bin/IIci bin/IIci/IIci_2M.bin
|
||||
cat bin/IIci/IIci_2M.bin > $@; cat bin/IIci/IIci_2M.bin >> $@
|
||||
|
||||
bin/IIci/IIci_8M.bin: bin/IIci bin/IIci/IIci_4M.bin
|
||||
cat bin/IIci/IIci_4M.bin > $@; cat bin/IIci/IIci_4M.bin >> $@
|
||||
|
||||
|
||||
bin/IIfx/IIfx_1M.bin: bin/IIfx roms/IIfx.bin
|
||||
cat roms/IIfx.bin > $@; cat roms/IIfx.bin >> $@
|
||||
|
||||
bin/IIfx/IIfx_2M.bin: bin/IIfx bin/IIfx/IIfx_1M.bin
|
||||
cat bin/IIfx/IIfx_1M.bin > $@; cat bin/IIfx/IIfx_1M.bin >> $@
|
||||
|
||||
bin/IIfx/IIfx_4M.bin: bin/IIfx bin/IIfx/IIfx_2M.bin
|
||||
cat bin/IIfx/IIfx_2M.bin > $@; cat bin/IIfx/IIfx_2M.bin >> $@
|
||||
|
||||
bin/IIfx/IIfx_8M.bin: bin/IIfx bin/IIfx/IIfx_4M.bin
|
||||
cat bin/IIfx/IIfx_4M.bin > $@; cat bin/IIfx/IIfx_4M.bin >> $@
|
||||
|
||||
|
||||
bin/IIsi/IIsi_1M.bin: bin/IIsi roms/IIsi.bin
|
||||
cat roms/IIsi.bin > $@; cat roms/IIsi.bin >> $@
|
||||
|
||||
bin/IIsi/IIsi_2M.bin: bin/IIsi bin/IIsi/IIsi_1M.bin
|
||||
cat bin/IIsi/IIsi_1M.bin > $@; cat bin/IIsi/IIsi_1M.bin >> $@
|
||||
|
||||
bin/IIsi/IIsi_4M.bin: bin/IIsi bin/IIsi/IIsi_2M.bin
|
||||
cat bin/IIsi/IIsi_2M.bin > $@; cat bin/IIsi/IIsi_2M.bin >> $@
|
||||
|
||||
bin/IIsi/IIsi_8M.bin: bin/IIsi bin/IIsi/IIsi_4M.bin
|
||||
cat bin/IIsi/IIsi_4M.bin > $@; cat bin/IIsi/IIsi_4M.bin >> $@
|
||||
|
||||
|
||||
.PHONY: clean
|
||||
clean:
|
||||
rm -fr bin obj
|
||||
|
||||
107
rdisk.c
107
rdisk.c
@ -9,46 +9,40 @@
|
||||
#include "rdisk.h"
|
||||
|
||||
// Decode keyboard/PRAM settings
|
||||
static void RDDecodeSettings(Ptr unmountEN, Ptr mountEN, Ptr ramEN, Ptr dbgEN, Ptr cdrEN) {
|
||||
// Sample R and A keys repeatedly
|
||||
char r = 0, a = 0;
|
||||
static void RDDecodeSettings(Ptr unmountEN, Ptr mountEN, Ptr dbgEN, Ptr cdrEN) {
|
||||
// Sample R key repeatedly
|
||||
char r = 0;
|
||||
long tmax = TickCount() + 60;
|
||||
for (long i = 0; i < 1000000; i++) {
|
||||
a |= RDiskIsAPressed();
|
||||
r |= RDiskIsRPressed() | a;
|
||||
r |= RDiskIsRPressed();
|
||||
if (r) { break; }
|
||||
if (TickCount() > tmax) { break; }
|
||||
}
|
||||
|
||||
// Read PRAM
|
||||
char legacy_startup, legacy_ram;
|
||||
char legacy_startup;
|
||||
RDiskReadXPRAM(1, 4, &legacy_startup);
|
||||
RDiskReadXPRAM(1, 5, &legacy_ram);
|
||||
|
||||
// Decode settings: unmount (don't boot), mount (after boot), RAM disk
|
||||
if (r) { // R boots from ROM disk
|
||||
*unmountEN = 0; // Don't unmount so we boot from this drive
|
||||
*mountEN = 0; // No need to mount later since we are boot disk
|
||||
*ramEN = a; // A enables RAM disk
|
||||
*dbgEN = 0;
|
||||
*cdrEN = 0;
|
||||
} else {
|
||||
if (legacy_startup & 0x01) { // Boot from ROM disk
|
||||
*unmountEN = 0; // Don't unmount so we boot from this drive
|
||||
*mountEN = 0; // No need to mount later since we are boot disk
|
||||
*ramEN = legacy_ram & 0x01; // Allocate RAM disk if bit 0 == 1
|
||||
*dbgEN = legacy_startup & 0x04; // MacsBug enabled if bit 2 == 1
|
||||
*cdrEN = legacy_startup & 0x08; // CD-ROM enabled if bit 3 == 1
|
||||
} else if (!(legacy_startup & 0x02)) { // Mount ROM disk
|
||||
*unmountEN = 1; // Unmount to not boot from our disk
|
||||
*mountEN = 1; // Mount in accRun
|
||||
*ramEN = legacy_ram & 0x01; // Allocate RAM disk if bit 0 == 1
|
||||
*dbgEN = 1; // CD-ROM ext. always enabled in mount mode
|
||||
*cdrEN = 1; // MacsBug always enabled in mount mode
|
||||
} else {
|
||||
*unmountEN = 1; // Unmount
|
||||
*mountEN = 0; // Don't mount again
|
||||
*ramEN = 0; // Don't allocate RAM disk
|
||||
*dbgEN = 1; // CD-ROM ext. always enabled in unmount mode
|
||||
*cdrEN = 1; // MacsBug always enabled in unmount mode
|
||||
}
|
||||
@ -75,15 +69,6 @@ char __attribute__ ((noinline)) G24(Ptr pos) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
// Switch to 32-bit mode and set
|
||||
#pragma parameter S24(__A2, __D3)
|
||||
void __attribute__ ((noinline)) S24(Ptr pos, char patch) {
|
||||
signed char mode = true32b;
|
||||
SwapMMUMode(&mode);
|
||||
*pos = patch; // Poke
|
||||
SwapMMUMode(&mode);
|
||||
}
|
||||
|
||||
// Figure out the first available drive number >= 5
|
||||
static int RDFindDrvNum() {
|
||||
DrvQElPtr dq;
|
||||
@ -149,57 +134,18 @@ OSErr RDOpen(IOParamPtr p, DCtlPtr d) {
|
||||
|
||||
// Init is called at beginning of first prime (read/write) call
|
||||
static void RDInit(IOParamPtr p, DCtlPtr d, RDiskStorage_t *c) {
|
||||
char unmountEN, mountEN, ramEN, dbgEN, cdrEN;
|
||||
char unmountEN, mountEN, dbgEN, cdrEN;
|
||||
// Mark init done
|
||||
c->initialized = 1;
|
||||
// Decode settings
|
||||
RDDecodeSettings(&unmountEN, &mountEN, &ramEN, &dbgEN, &cdrEN);
|
||||
|
||||
// If RAM disk enabled, try to allocate RAM disk buffer if not already
|
||||
if (ramEN & !c->ramdisk) {
|
||||
if (*MMU32bit) { // 32-bit mode
|
||||
unsigned long minBufPtr, newBufPtr;
|
||||
// Compute if there is enough high memory
|
||||
minBufPtr = ((unsigned long)*MemTop / 2) + 1024;
|
||||
newBufPtr = (unsigned long)*BufPtr - RDiskSize;
|
||||
if (newBufPtr > minBufPtr && (unsigned long)*BufPtr > newBufPtr) {
|
||||
// Allocate RAM disk buffer by lowering BufPtr
|
||||
*BufPtr = (Ptr)newBufPtr;
|
||||
// Set RAM disk buffer pointer.
|
||||
c->ramdisk = *BufPtr;
|
||||
// Copy ROM disk image to RAM disk
|
||||
BlockMove(RDiskBuf, c->ramdisk, RDiskSize);
|
||||
// Clearing write protect marks RAM disk enabled
|
||||
c->status.writeProt = 0;
|
||||
}
|
||||
} else { // 24-bit mode
|
||||
// Put RAM disk just past 8MB
|
||||
c->ramdisk = (Ptr)(8 * 1024 * 1024);
|
||||
// Copy ROM disk image to RAM disk
|
||||
//FIXME: what if we don't have enough RAM?
|
||||
// Will this wrap around and overwrite low memory?
|
||||
// That's not the worst, since the system would just crash,
|
||||
// but it would be better to switch to read-only status
|
||||
copy24(RDiskBuf, c->ramdisk, RDiskSize);
|
||||
// Clearing write protect marks RAM disk enabled
|
||||
c->status.writeProt = 0;
|
||||
}
|
||||
}
|
||||
RDDecodeSettings(&unmountEN, &mountEN, &dbgEN, &cdrEN);
|
||||
|
||||
// Patch
|
||||
if (RDiskDBGDisPos < RDiskSize) {
|
||||
if (c->ramdisk && !dbgEN) {
|
||||
poke24(c->ramdisk + RDiskDBGDisPos, c->dbgDisByte);
|
||||
} else if (dbgEN) {
|
||||
peek24(RDiskBuf + RDiskDBGDisPos, c->dbgDisByte);
|
||||
}
|
||||
if (dbgEN && RDiskDBGDisPos < RDiskSize) {
|
||||
peek24(RDiskBuf + RDiskDBGDisPos, c->dbgDisByte);
|
||||
}
|
||||
if (RDiskCDRDisPos < RDiskSize) {
|
||||
if (c->ramdisk && !cdrEN) {
|
||||
poke24(c->ramdisk + RDiskCDRDisPos, c->cdrDisByte);
|
||||
} else if (cdrEN) {
|
||||
peek24(RDiskBuf + RDiskCDRDisPos, c->cdrDisByte);
|
||||
}
|
||||
if (cdrEN && RDiskCDRDisPos < RDiskSize) {
|
||||
peek24(RDiskBuf + RDiskCDRDisPos, c->cdrDisByte);
|
||||
}
|
||||
|
||||
// Unmount if not booting from ROM disk
|
||||
@ -230,7 +176,7 @@ OSErr RDPrime(IOParamPtr p, DCtlPtr d) {
|
||||
if (!c->status.diskInPlace) { return offLinErr; }
|
||||
|
||||
// Get pointer to RAM or ROM disk buffer
|
||||
disk = (c->ramdisk ? c->ramdisk : RDiskBuf) + d->dCtlPosition;
|
||||
disk = RDiskBuf + d->dCtlPosition;
|
||||
// Bounds checking
|
||||
if (d->dCtlPosition >= RDiskSize || p->ioReqCount >= RDiskSize ||
|
||||
d->dCtlPosition + p->ioReqCount >= RDiskSize) { return paramErr; }
|
||||
@ -241,20 +187,15 @@ OSErr RDPrime(IOParamPtr p, DCtlPtr d) {
|
||||
// Read from disk into buffer.
|
||||
if (*MMU32bit) { BlockMove(disk, p->ioBuffer, p->ioReqCount); }
|
||||
else { copy24(disk, StripAddress(p->ioBuffer), p->ioReqCount); }
|
||||
if (!c->ramdisk && RDiskDBGDisPos >= d->dCtlPosition &&
|
||||
if (RDiskDBGDisPos >= d->dCtlPosition &&
|
||||
RDiskDBGDisPos < d->dCtlPosition + p->ioReqCount) {
|
||||
p->ioBuffer[RDiskDBGDisPos - d->dCtlPosition] = c->dbgDisByte;
|
||||
}
|
||||
if (!c->ramdisk && RDiskCDRDisPos >= d->dCtlPosition &&
|
||||
if (RDiskCDRDisPos >= d->dCtlPosition &&
|
||||
RDiskCDRDisPos < d->dCtlPosition + p->ioReqCount) {
|
||||
p->ioBuffer[RDiskCDRDisPos - d->dCtlPosition] = c->cdrDisByte;
|
||||
}
|
||||
} else if (cmd == aWrCmd) { // Write
|
||||
// Fail if write protected or RAM disk buffer not set up
|
||||
if (c->status.writeProt || !c->ramdisk) { return wPrErr; }
|
||||
// Write from buffer into disk.
|
||||
if (*MMU32bit) { BlockMove(p->ioBuffer, disk, p->ioReqCount); }
|
||||
else { copy24(StripAddress(p->ioBuffer), disk, p->ioReqCount); }
|
||||
} else if (cmd == aWrCmd) { return wPrErr;
|
||||
} else { return noErr; } //FIXME: Fail if cmd isn't read or write?
|
||||
|
||||
// Update count and position/offset, then return
|
||||
@ -272,19 +213,8 @@ OSErr RDCtl(CntrlParamPtr p, DCtlPtr d) {
|
||||
c = *(RDiskStorage_t**)d->dCtlStorage;
|
||||
// Handle control request based on csCode
|
||||
switch (p->csCode) {
|
||||
case killCode:
|
||||
return noErr;
|
||||
case kFormat:
|
||||
if (!c->status.diskInPlace || c->status.writeProt ||
|
||||
!c->ramdisk) { return controlErr; }
|
||||
long long z = 0;
|
||||
Ptr pz;
|
||||
if (*MMU32bit) { pz = (Ptr)&z; }
|
||||
else { pz = StripAddress((Ptr)&z); }
|
||||
for (int i = 0; i < 4095; i++) {
|
||||
copy24(c->ramdisk + i * sizeof(z), pz, sizeof(z));
|
||||
}
|
||||
return noErr;
|
||||
case killCode: return noErr;
|
||||
case kFormat: return controlErr;
|
||||
case kVerify:
|
||||
if (!c->status.diskInPlace) { return controlErr; }
|
||||
return noErr;
|
||||
@ -310,8 +240,7 @@ OSErr RDCtl(CntrlParamPtr p, DCtlPtr d) {
|
||||
// high word (bytes 2 & 3) clear
|
||||
// byte 1 = primary + fixed media + internal
|
||||
// byte 0 = drive type (0x10 is RAM disk) / (0x11 is ROM disk)
|
||||
if (c->status.writeProt) { *(long*)p->csParam = 0x00000411; }
|
||||
else { *(long*)p->csParam = 0x00000410; }
|
||||
*(long*)p->csParam = 0x00000411;
|
||||
return noErr;
|
||||
case 24: // Return SCSI partition size
|
||||
*(long*)p->csParam = RDiskSize / 512;
|
||||
|
||||
6
rdisk.h
6
rdisk.h
@ -21,12 +21,13 @@ OSErr RDiskReadXPRAM(short numBytes, short whichByte, Ptr dest) = {0x4840, 0x300
|
||||
OSErr RDiskAddDrive(short drvrRefNum, short drvNum, DrvQElPtr dq) = {0x4840, 0x3001, 0xA04E};
|
||||
|
||||
static inline char RDiskIsRPressed() { return *((volatile char*)0x175) & 0x80; }
|
||||
static inline char RDiskIsAPressed() { return *((volatile char*)0x174) & 0x01; }
|
||||
|
||||
#define RDISK_ICON_SIZE (285)
|
||||
typedef struct RDiskStorage_s {
|
||||
DrvSts2 status;
|
||||
char initialized;
|
||||
char dbgDisByte;
|
||||
char cdrDisByte;
|
||||
#ifdef RDISK_COMPRESS_ICON_ENABLE
|
||||
char icon[RDISK_ICON_SIZE+8];
|
||||
#endif
|
||||
@ -38,9 +39,6 @@ typedef void (*RDiskCopy_t)(Ptr, Ptr, unsigned long);
|
||||
typedef char (*RDiskPeek_t)(Ptr);
|
||||
#define peek24(a, d) { RDiskPeek_t f = G24; d = f(a); }
|
||||
|
||||
typedef void (*RDiskPoke_t)(Ptr, char);
|
||||
#define poke24(a, d) { RDiskPoke_t f = S24; f(a, d); }
|
||||
|
||||
#define PackBits_Repeat(count) (-1 * (count - 1))
|
||||
#define PackBits_Literal(count) (count - 1)
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user