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macemu/SheepShaver/src/main.cpp

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/*
* main.cpp - ROM patches
*
* SheepShaver (C) 1997-2008 Christian Bauer and Marc Hellwig
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "sysdeps.h"
#include "main.h"
#include "version.h"
#include "prefs.h"
#include "prefs_editor.h"
#include "cpu_emulation.h"
#include "emul_op.h"
#include "xlowmem.h"
#include "xpram.h"
#include "timer.h"
#include "adb.h"
#include "sony.h"
#include "disk.h"
#include "cdrom.h"
#include "scsi.h"
#include "video.h"
#include "audio.h"
#include "ether.h"
#include "serial.h"
#include "clip.h"
#include "extfs.h"
#include "sys.h"
#include "macos_util.h"
#include "rom_patches.h"
#include "user_strings.h"
#include "vm_alloc.h"
#include "sigsegv.h"
#include "thunks.h"
#define DEBUG 0
#include "debug.h"
#ifdef ENABLE_MON
#include "mon.h"
static uint32 sheepshaver_read_byte(uintptr adr)
{
return ReadMacInt8(adr);
}
static void sheepshaver_write_byte(uintptr adr, uint32 b)
{
WriteMacInt8(adr, b);
}
#endif
/*
* Initialize everything, returns false on error
*/
bool InitAll(const char *vmdir)
{
// Load NVRAM
XPRAMInit(vmdir);
// Load XPRAM default values if signature not found
if (XPRAM[0x130c] != 0x4e || XPRAM[0x130d] != 0x75
|| XPRAM[0x130e] != 0x4d || XPRAM[0x130f] != 0x63) {
D(bug("Loading XPRAM default values\n"));
memset(XPRAM + 0x1300, 0, 0x100);
XPRAM[0x130c] = 0x4e; // "NuMc" signature
XPRAM[0x130d] = 0x75;
XPRAM[0x130e] = 0x4d;
XPRAM[0x130f] = 0x63;
XPRAM[0x1301] = 0x80; // InternalWaitFlags = DynWait (don't wait for SCSI devices upon bootup)
XPRAM[0x1310] = 0xa8; // Standard PRAM values
XPRAM[0x1311] = 0x00;
XPRAM[0x1312] = 0x00;
XPRAM[0x1313] = 0x22;
XPRAM[0x1314] = 0xcc;
XPRAM[0x1315] = 0x0a;
XPRAM[0x1316] = 0xcc;
XPRAM[0x1317] = 0x0a;
XPRAM[0x131c] = 0x00;
XPRAM[0x131d] = 0x02;
XPRAM[0x131e] = 0x63;
XPRAM[0x131f] = 0x00;
XPRAM[0x1308] = 0x13;
XPRAM[0x1309] = 0x88;
XPRAM[0x130a] = 0x00;
XPRAM[0x130b] = 0xcc;
XPRAM[0x1376] = 0x00; // OSDefault = MacOS
XPRAM[0x1377] = 0x01;
XPRAM[0x138a] = 0x25; // Use PPC memory manager ("Modern Memory Manager")
}
// Set boot volume
int16 i16 = PrefsFindInt32("bootdrive");
XPRAM[0x1378] = i16 >> 8;
XPRAM[0x1379] = i16 & 0xff;
i16 = PrefsFindInt32("bootdriver");
XPRAM[0x137a] = i16 >> 8;
XPRAM[0x137b] = i16 & 0xff;
// Create BootGlobs at top of Mac memory
memset(RAMBaseHost + RAMSize - 4096, 0, 4096);
BootGlobsAddr = RAMBase + RAMSize - 0x1c;
WriteMacInt32(BootGlobsAddr - 5 * 4, RAMBase + RAMSize); // MemTop
WriteMacInt32(BootGlobsAddr + 0 * 4, RAMBase); // First RAM bank
WriteMacInt32(BootGlobsAddr + 1 * 4, RAMSize);
WriteMacInt32(BootGlobsAddr + 2 * 4, (uint32)-1); // End of bank table
// Init thunks
if (!ThunksInit())
return false;
// Init drivers
SonyInit();
DiskInit();
CDROMInit();
SCSIInit();
// Init external file system
ExtFSInit();
// Init ADB
ADBInit();
// Init audio
AudioInit();
// Init network
EtherInit();
// Init serial ports
SerialInit();
// Init Time Manager
TimerInit();
// Init clipboard
ClipInit();
// Init video
if (!VideoInit())
return false;
// Install ROM patches
if (!PatchROM()) {
ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
return false;
}
// Initialize Kernel Data
Mac_memset(KERNEL_DATA_BASE, 0, sizeof(KernelData));
if (ROMType == ROMTYPE_NEWWORLD) {
uint32 of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
Mac_memset(of_dev_tree, 0, 4 * sizeof(uint32));
uint32 vector_lookup_tbl = SheepMem::Reserve(128);
uint32 vector_mask_tbl = SheepMem::Reserve(64);
Mac_memset(KERNEL_DATA_BASE + 0xb80, 0x3d, 0x80);
Mac_memset(vector_lookup_tbl, 0, 128);
Mac_memset(vector_mask_tbl, 0, 64);
WriteMacInt32(KERNEL_DATA_BASE + 0xb80, ROMBase);
WriteMacInt32(KERNEL_DATA_BASE + 0xb84, of_dev_tree); // OF device tree base
WriteMacInt32(KERNEL_DATA_BASE + 0xb90, vector_lookup_tbl);
WriteMacInt32(KERNEL_DATA_BASE + 0xb94, vector_mask_tbl);
WriteMacInt32(KERNEL_DATA_BASE + 0xb98, ROMBase); // OpenPIC base
WriteMacInt32(KERNEL_DATA_BASE + 0xbb0, 0); // ADB base
WriteMacInt32(KERNEL_DATA_BASE + 0xc20, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc24, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc30, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc34, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc38, 0x00010020);
WriteMacInt32(KERNEL_DATA_BASE + 0xc3c, 0x00200001);
WriteMacInt32(KERNEL_DATA_BASE + 0xc40, 0x00010000);
WriteMacInt32(KERNEL_DATA_BASE + 0xc50, RAMBase);
WriteMacInt32(KERNEL_DATA_BASE + 0xc54, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xf60, PVR);
WriteMacInt32(KERNEL_DATA_BASE + 0xf64, CPUClockSpeed); // clock-frequency
WriteMacInt32(KERNEL_DATA_BASE + 0xf68, BusClockSpeed); // bus-frequency
WriteMacInt32(KERNEL_DATA_BASE + 0xf6c, TimebaseSpeed); // timebase-frequency
} else if (ROMType == ROMTYPE_GOSSAMER) {
WriteMacInt32(KERNEL_DATA_BASE + 0xc80, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc84, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc90, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc94, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc98, 0x00010020);
WriteMacInt32(KERNEL_DATA_BASE + 0xc9c, 0x00200001);
WriteMacInt32(KERNEL_DATA_BASE + 0xca0, 0x00010000);
WriteMacInt32(KERNEL_DATA_BASE + 0xcb0, RAMBase);
WriteMacInt32(KERNEL_DATA_BASE + 0xcb4, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xf60, PVR);
WriteMacInt32(KERNEL_DATA_BASE + 0xf64, CPUClockSpeed); // clock-frequency
WriteMacInt32(KERNEL_DATA_BASE + 0xf68, BusClockSpeed); // bus-frequency
WriteMacInt32(KERNEL_DATA_BASE + 0xf6c, TimebaseSpeed); // timebase-frequency
} else {
WriteMacInt32(KERNEL_DATA_BASE + 0xc80, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc84, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc90, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc94, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xc98, 0x00010020);
WriteMacInt32(KERNEL_DATA_BASE + 0xc9c, 0x00200001);
WriteMacInt32(KERNEL_DATA_BASE + 0xca0, 0x00010000);
WriteMacInt32(KERNEL_DATA_BASE + 0xcb0, RAMBase);
WriteMacInt32(KERNEL_DATA_BASE + 0xcb4, RAMSize);
WriteMacInt32(KERNEL_DATA_BASE + 0xf80, PVR);
WriteMacInt32(KERNEL_DATA_BASE + 0xf84, CPUClockSpeed); // clock-frequency
WriteMacInt32(KERNEL_DATA_BASE + 0xf88, BusClockSpeed); // bus-frequency
WriteMacInt32(KERNEL_DATA_BASE + 0xf8c, TimebaseSpeed); // timebase-frequency
}
// Initialize extra low memory
D(bug("Initializing Low Memory...\n"));
Mac_memset(0, 0, 0x3000);
WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h')); // Signature to detect SheepShaver
WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr); // For trap replacement routines
WriteMacInt32(XLM_PVR, PVR); // Theoretical PVR
WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed); // For DriverServicesLib patch
WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN); // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage()); // Pointer to read-only page with all bits set to 0
#if !EMULATED_PPC
#ifdef SYSTEM_CLOBBERS_R2
WriteMacInt32(XLM_TOC, (uint32)TOC); // TOC pointer of emulator
#endif
#ifdef SYSTEM_CLOBBERS_R13
WriteMacInt32(XLM_R13, (uint32)R13); // TLS register
#endif
#endif
WriteMacInt32(XLM_ETHER_AO_GET_HWADDR, NativeFunction(NATIVE_ETHER_AO_GET_HWADDR)); // Low level ethernet driver functions
WriteMacInt32(XLM_ETHER_AO_ADD_MULTI, NativeFunction(NATIVE_ETHER_AO_ADD_MULTI));
WriteMacInt32(XLM_ETHER_AO_DEL_MULTI, NativeFunction(NATIVE_ETHER_AO_DEL_MULTI));
WriteMacInt32(XLM_ETHER_AO_SEND_PACKET, NativeFunction(NATIVE_ETHER_AO_SEND_PACKET));
WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT)); // DLPI ethernet driver functions
WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
D(bug("Low Memory initialized\n"));
#if ENABLE_MON
// Initialize mon
mon_init();
mon_read_byte = sheepshaver_read_byte;
mon_write_byte = sheepshaver_write_byte;
#endif
return true;
}
void CDROMOpenDone() {
// At this point, any initial CD-ROM drives have been added to the drive queue.
if (ROMType == ROMTYPE_NEWWORLD) {
// The PRAM boot device setting has no apparent effect,
// but we can achieve a boot with the specified device by reordering the drive queue ourselves.
int bootdriver = PrefsFindInt32("bootdriver");
if (bootdriver) {
MoveDrivesFromDriverToFront(bootdriver);
}
}
}
/*
* Deinitialize everything
*/
void ExitAll(void)
{
#if ENABLE_MON
// Deinitialize mon
mon_exit();
#endif
// Save NVRAM
XPRAMExit();
// Exit clipboard
ClipExit();
// Exit Time Manager
TimerExit();
// Exit serial
SerialExit();
// Exit network
EtherExit();
// Exit audio
AudioExit();
// Exit ADB
ADBExit();
// Exit video
VideoExit();
// Exit external file system
ExtFSExit();
// Exit drivers
SCSIExit();
CDROMExit();
DiskExit();
SonyExit();
// Delete thunks
ThunksExit();
}
/*
* Patch things after system startup (gets called by disk driver accRun routine)
*/
void PatchAfterStartup(void)
{
ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
InstallExtFS();
}
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