| 1 |
/* |
| 2 |
* rom_patches.cpp - ROM patches |
| 3 |
* |
| 4 |
* SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
/* |
| 22 |
* TODO: |
| 23 |
* IRQ_NEST must be handled atomically |
| 24 |
* Don't use r1 in extra routines |
| 25 |
*/ |
| 26 |
|
| 27 |
#include <string.h> |
| 28 |
|
| 29 |
#include "sysdeps.h" |
| 30 |
#include "rom_patches.h" |
| 31 |
#include "main.h" |
| 32 |
#include "prefs.h" |
| 33 |
#include "cpu_emulation.h" |
| 34 |
#include "emul_op.h" |
| 35 |
#include "xlowmem.h" |
| 36 |
#include "sony.h" |
| 37 |
#include "disk.h" |
| 38 |
#include "cdrom.h" |
| 39 |
#include "audio.h" |
| 40 |
#include "audio_defs.h" |
| 41 |
#include "serial.h" |
| 42 |
#include "macos_util.h" |
| 43 |
#include "thunks.h" |
| 44 |
|
| 45 |
#define DEBUG 0 |
| 46 |
#include "debug.h" |
| 47 |
|
| 48 |
|
| 49 |
// 68k breakpoint address |
| 50 |
//#define M68K_BREAK_POINT 0x29e0 // BootMe |
| 51 |
//#define M68K_BREAK_POINT 0x2a1e // Boot block code returned |
| 52 |
//#define M68K_BREAK_POINT 0x3150 // CritError |
| 53 |
//#define M68K_BREAK_POINT 0x187ce // Unimplemented trap |
| 54 |
|
| 55 |
// PowerPC breakpoint address |
| 56 |
//#define POWERPC_BREAK_POINT 0x36e6c0 // 68k emulator start |
| 57 |
|
| 58 |
#define DISABLE_SCSI 1 |
| 59 |
|
| 60 |
|
| 61 |
// Other ROM addresses |
| 62 |
const uint32 CHECK_LOAD_PATCH_SPACE = 0x2fcf00; |
| 63 |
const uint32 PUT_SCRAP_PATCH_SPACE = 0x2fcf80; |
| 64 |
const uint32 GET_SCRAP_PATCH_SPACE = 0x2fcfc0; |
| 65 |
const uint32 ADDR_MAP_PATCH_SPACE = 0x2fd000; |
| 66 |
|
| 67 |
// Global variables |
| 68 |
int ROMType; // ROM type |
| 69 |
static uint32 sony_offset; // Offset of .Sony driver resource |
| 70 |
|
| 71 |
// Prototypes |
| 72 |
static bool patch_nanokernel_boot(void); |
| 73 |
static bool patch_68k_emul(void); |
| 74 |
static bool patch_nanokernel(void); |
| 75 |
static bool patch_68k(void); |
| 76 |
|
| 77 |
|
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// Decode LZSS data |
| 79 |
static void decode_lzss(const uint8 *src, uint8 *dest, int size) |
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{ |
| 81 |
char dict[0x1000]; |
| 82 |
int run_mask = 0, dict_idx = 0xfee; |
| 83 |
for (;;) { |
| 84 |
if (run_mask < 0x100) { |
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// Start new run |
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if (--size < 0) |
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break; |
| 88 |
run_mask = *src++ | 0xff00; |
| 89 |
} |
| 90 |
bool bit = run_mask & 1; |
| 91 |
run_mask >>= 1; |
| 92 |
if (bit) { |
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// Verbatim copy |
| 94 |
if (--size < 0) |
| 95 |
break; |
| 96 |
int c = *src++; |
| 97 |
dict[dict_idx++] = c; |
| 98 |
*dest++ = c; |
| 99 |
dict_idx &= 0xfff; |
| 100 |
} else { |
| 101 |
// Copy from dictionary |
| 102 |
if (--size < 0) |
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break; |
| 104 |
int idx = *src++; |
| 105 |
if (--size < 0) |
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break; |
| 107 |
int cnt = *src++; |
| 108 |
idx |= (cnt << 4) & 0xf00; |
| 109 |
cnt = (cnt & 0x0f) + 3; |
| 110 |
while (cnt--) { |
| 111 |
char c = dict[idx++]; |
| 112 |
dict[dict_idx++] = c; |
| 113 |
*dest++ = c; |
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idx &= 0xfff; |
| 115 |
dict_idx &= 0xfff; |
| 116 |
} |
| 117 |
} |
| 118 |
} |
| 119 |
} |
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|
| 121 |
// Decode parcels of ROM image (MacOS 9.X and even earlier) |
| 122 |
void decode_parcels(const uint8 *src, uint8 *dest, int size) |
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{ |
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uint32 parcel_offset = 0x14; |
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D(bug("Offset Type Name\n")); |
| 126 |
while (parcel_offset != 0) { |
| 127 |
const uint32 *parcel_data = (uint32 *)(src + parcel_offset); |
| 128 |
uint32 next_offset = ntohl(parcel_data[0]); |
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uint32 parcel_type = ntohl(parcel_data[1]); |
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D(bug("%08x %c%c%c%c %s\n", parcel_offset, |
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(parcel_type >> 24) & 0xff, (parcel_type >> 16) & 0xff, |
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(parcel_type >> 8) & 0xff, parcel_type & 0xff, &parcel_data[6])); |
| 133 |
if (parcel_type == FOURCC('r','o','m',' ')) { |
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uint32 lzss_offset = ntohl(parcel_data[2]); |
| 135 |
uint32 lzss_size = ((uintptr)src + next_offset) - ((uintptr)parcel_data + lzss_offset); |
| 136 |
decode_lzss((uint8 *)parcel_data + lzss_offset, dest, lzss_size); |
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} |
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parcel_offset = next_offset; |
| 139 |
} |
| 140 |
} |
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|
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|
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/* |
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* Decode ROM image, 4 MB plain images or NewWorld images |
| 145 |
*/ |
| 146 |
|
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bool DecodeROM(uint8 *data, uint32 size) |
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{ |
| 149 |
if (size == ROM_SIZE) { |
| 150 |
// Plain ROM image |
| 151 |
memcpy((void *)ROM_BASE, data, ROM_SIZE); |
| 152 |
return true; |
| 153 |
} |
| 154 |
else if (strncmp((char *)data, "<CHRP-BOOT>", 11) == 0) { |
| 155 |
// CHRP compressed ROM image |
| 156 |
uint32 image_offset, image_size; |
| 157 |
bool decode_info_ok = false; |
| 158 |
|
| 159 |
char *s = strstr((char *)data, "constant lzss-offset"); |
| 160 |
if (s != NULL) { |
| 161 |
// Probably a plain LZSS compressed ROM image |
| 162 |
if (sscanf(s - 7, "%06x", &image_offset) == 1) { |
| 163 |
s = strstr((char *)data, "constant lzss-size"); |
| 164 |
if (s != NULL && (sscanf(s - 7, "%06x", &image_size) == 1)) |
| 165 |
decode_info_ok = true; |
| 166 |
} |
| 167 |
} |
| 168 |
else { |
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// Probably a MacOS 9.2.x ROM image |
| 170 |
s = strstr((char *)data, "constant parcels-offset"); |
| 171 |
if (s != NULL) { |
| 172 |
if (sscanf(s - 7, "%06x", &image_offset) == 1) { |
| 173 |
s = strstr((char *)data, "constant parcels-size"); |
| 174 |
if (s != NULL && (sscanf(s - 7, "%06x", &image_size) == 1)) |
| 175 |
decode_info_ok = true; |
| 176 |
} |
| 177 |
} |
| 178 |
} |
| 179 |
|
| 180 |
// No valid information to decode the ROM found? |
| 181 |
if (!decode_info_ok) |
| 182 |
return false; |
| 183 |
|
| 184 |
// Check signature, this could be a parcels-based ROM image |
| 185 |
uint32 rom_signature = ntohl(*(uint32 *)(data + image_offset)); |
| 186 |
if (rom_signature == FOURCC('p','r','c','l')) { |
| 187 |
D(bug("Offset of parcels data: %08x\n", image_offset)); |
| 188 |
D(bug("Size of parcels data: %08x\n", image_size)); |
| 189 |
decode_parcels(data + image_offset, (uint8 *)ROM_BASE, image_size); |
| 190 |
} |
| 191 |
else { |
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D(bug("Offset of compressed data: %08x\n", image_offset)); |
| 193 |
D(bug("Size of compressed data: %08x\n", image_size)); |
| 194 |
decode_lzss(data + image_offset, (uint8 *)ROM_BASE, image_size); |
| 195 |
} |
| 196 |
return true; |
| 197 |
} |
| 198 |
return false; |
| 199 |
} |
| 200 |
|
| 201 |
|
| 202 |
/* |
| 203 |
* Search ROM for byte string, return ROM offset (or 0) |
| 204 |
*/ |
| 205 |
|
| 206 |
static uint32 find_rom_data(uint32 start, uint32 end, const uint8 *data, uint32 data_len) |
| 207 |
{ |
| 208 |
uint32 ofs = start; |
| 209 |
while (ofs < end) { |
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if (!memcmp((void *)(ROM_BASE + ofs), data, data_len)) |
| 211 |
return ofs; |
| 212 |
ofs++; |
| 213 |
} |
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return 0; |
| 215 |
} |
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|
| 217 |
|
| 218 |
/* |
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* Search ROM resource by type/ID, return ROM offset of resource data |
| 220 |
*/ |
| 221 |
|
| 222 |
static uint32 rsrc_ptr = 0; |
| 223 |
|
| 224 |
// id = 4711 means "find any ID" |
| 225 |
static uint32 find_rom_resource(uint32 s_type, int16 s_id = 4711, bool cont = false) |
| 226 |
{ |
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uint32 *lp = (uint32 *)(ROM_BASE + 0x1a); |
| 228 |
uint32 x = ntohl(*lp); |
| 229 |
uint8 *bp = (uint8 *)(ROM_BASE + x + 5); |
| 230 |
uint32 header_size = *bp; |
| 231 |
|
| 232 |
if (!cont) |
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rsrc_ptr = x; |
| 234 |
else if (rsrc_ptr == 0) |
| 235 |
return 0; |
| 236 |
|
| 237 |
for (;;) { |
| 238 |
lp = (uint32 *)(ROM_BASE + rsrc_ptr); |
| 239 |
rsrc_ptr = ntohl(*lp); |
| 240 |
if (rsrc_ptr == 0) |
| 241 |
break; |
| 242 |
|
| 243 |
rsrc_ptr += header_size; |
| 244 |
|
| 245 |
lp = (uint32 *)(ROM_BASE + rsrc_ptr + 4); |
| 246 |
uint32 data = ntohl(*lp); lp++; |
| 247 |
uint32 type = ntohl(*lp); lp++; |
| 248 |
int16 id = ntohs(*(int16 *)lp); |
| 249 |
if (type == s_type && (id == s_id || s_id == 4711)) |
| 250 |
return data; |
| 251 |
} |
| 252 |
return 0; |
| 253 |
} |
| 254 |
|
| 255 |
|
| 256 |
/* |
| 257 |
* Search offset of A-Trap routine in ROM |
| 258 |
*/ |
| 259 |
|
| 260 |
static uint32 find_rom_trap(uint16 trap) |
| 261 |
{ |
| 262 |
uint32 *lp = (uint32 *)(ROM_BASE + 0x22); |
| 263 |
lp = (uint32 *)(ROM_BASE + ntohl(*lp)); |
| 264 |
|
| 265 |
if (trap > 0xa800) |
| 266 |
return ntohl(lp[trap & 0x3ff]); |
| 267 |
else |
| 268 |
return ntohl(lp[(trap & 0xff) + 0x400]); |
| 269 |
} |
| 270 |
|
| 271 |
|
| 272 |
/* |
| 273 |
* List of audio sifters installed in ROM and System file |
| 274 |
*/ |
| 275 |
|
| 276 |
struct sift_entry { |
| 277 |
uint32 type; |
| 278 |
int16 id; |
| 279 |
}; |
| 280 |
static sift_entry sifter_list[32]; |
| 281 |
static int num_sifters; |
| 282 |
|
| 283 |
void AddSifter(uint32 type, int16 id) |
| 284 |
{ |
| 285 |
if (FindSifter(type, id)) |
| 286 |
return; |
| 287 |
D(bug(" adding sifter type %c%c%c%c (%08x), id %d\n", type >> 24, (type >> 16) & 0xff, (type >> 8) & 0xff, type & 0xff, type, id)); |
| 288 |
sifter_list[num_sifters].type = type; |
| 289 |
sifter_list[num_sifters].id = id; |
| 290 |
num_sifters++; |
| 291 |
} |
| 292 |
|
| 293 |
bool FindSifter(uint32 type, int16 id) |
| 294 |
{ |
| 295 |
for (int i=0; i<num_sifters; i++) { |
| 296 |
if (sifter_list[i].type == type && sifter_list[i].id == id) |
| 297 |
return true; |
| 298 |
} |
| 299 |
return false; |
| 300 |
} |
| 301 |
|
| 302 |
|
| 303 |
/* |
| 304 |
* Driver stubs |
| 305 |
*/ |
| 306 |
|
| 307 |
static const uint8 sony_driver[] = { // Replacement for .Sony driver |
| 308 |
// Driver header |
| 309 |
SonyDriverFlags >> 8, SonyDriverFlags & 0xff, 0, 0, 0, 0, 0, 0, |
| 310 |
0x00, 0x18, // Open() offset |
| 311 |
0x00, 0x1c, // Prime() offset |
| 312 |
0x00, 0x20, // Control() offset |
| 313 |
0x00, 0x2c, // Status() offset |
| 314 |
0x00, 0x52, // Close() offset |
| 315 |
0x05, 0x2e, 0x53, 0x6f, 0x6e, 0x79, // ".Sony" |
| 316 |
|
| 317 |
// Open() |
| 318 |
M68K_EMUL_OP_SONY_OPEN >> 8, M68K_EMUL_OP_SONY_OPEN & 0xff, |
| 319 |
0x4e, 0x75, // rts |
| 320 |
|
| 321 |
// Prime() |
| 322 |
M68K_EMUL_OP_SONY_PRIME >> 8, M68K_EMUL_OP_SONY_PRIME & 0xff, |
| 323 |
0x60, 0x0e, // bra IOReturn |
| 324 |
|
| 325 |
// Control() |
| 326 |
M68K_EMUL_OP_SONY_CONTROL >> 8, M68K_EMUL_OP_SONY_CONTROL & 0xff, |
| 327 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 328 |
0x66, 0x04, // bne IOReturn |
| 329 |
0x4e, 0x75, // rts |
| 330 |
|
| 331 |
// Status() |
| 332 |
M68K_EMUL_OP_SONY_STATUS >> 8, M68K_EMUL_OP_SONY_STATUS & 0xff, |
| 333 |
|
| 334 |
// IOReturn |
| 335 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 336 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 337 |
0x67, 0x0c, // beq 1 |
| 338 |
0x4a, 0x40, // tst.w d0 |
| 339 |
0x6f, 0x02, // ble 2 |
| 340 |
0x42, 0x40, // clr.w d0 |
| 341 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 342 |
0x4e, 0x75, // rts |
| 343 |
0x4a, 0x40, //1 tst.w d0 |
| 344 |
0x6f, 0x04, // ble 3 |
| 345 |
0x42, 0x40, // clr.w d0 |
| 346 |
0x4e, 0x75, // rts |
| 347 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(sp) |
| 348 |
0x4e, 0x75, // rts |
| 349 |
|
| 350 |
// Close() |
| 351 |
0x70, 0xe8, // moveq #-24,d0 |
| 352 |
0x4e, 0x75 // rts |
| 353 |
}; |
| 354 |
|
| 355 |
static const uint8 disk_driver[] = { // Generic disk driver |
| 356 |
// Driver header |
| 357 |
DiskDriverFlags >> 8, DiskDriverFlags & 0xff, 0, 0, 0, 0, 0, 0, |
| 358 |
0x00, 0x18, // Open() offset |
| 359 |
0x00, 0x1c, // Prime() offset |
| 360 |
0x00, 0x20, // Control() offset |
| 361 |
0x00, 0x2c, // Status() offset |
| 362 |
0x00, 0x52, // Close() offset |
| 363 |
0x05, 0x2e, 0x44, 0x69, 0x73, 0x6b, // ".Disk" |
| 364 |
|
| 365 |
// Open() |
| 366 |
M68K_EMUL_OP_DISK_OPEN >> 8, M68K_EMUL_OP_DISK_OPEN & 0xff, |
| 367 |
0x4e, 0x75, // rts |
| 368 |
|
| 369 |
// Prime() |
| 370 |
M68K_EMUL_OP_DISK_PRIME >> 8, M68K_EMUL_OP_DISK_PRIME & 0xff, |
| 371 |
0x60, 0x0e, // bra IOReturn |
| 372 |
|
| 373 |
// Control() |
| 374 |
M68K_EMUL_OP_DISK_CONTROL >> 8, M68K_EMUL_OP_DISK_CONTROL & 0xff, |
| 375 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 376 |
0x66, 0x04, // bne IOReturn |
| 377 |
0x4e, 0x75, // rts |
| 378 |
|
| 379 |
// Status() |
| 380 |
M68K_EMUL_OP_DISK_STATUS >> 8, M68K_EMUL_OP_DISK_STATUS & 0xff, |
| 381 |
|
| 382 |
// IOReturn |
| 383 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 384 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 385 |
0x67, 0x0c, // beq 1 |
| 386 |
0x4a, 0x40, // tst.w d0 |
| 387 |
0x6f, 0x02, // ble 2 |
| 388 |
0x42, 0x40, // clr.w d0 |
| 389 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 390 |
0x4e, 0x75, // rts |
| 391 |
0x4a, 0x40, //1 tst.w d0 |
| 392 |
0x6f, 0x04, // ble 3 |
| 393 |
0x42, 0x40, // clr.w d0 |
| 394 |
0x4e, 0x75, // rts |
| 395 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(sp) |
| 396 |
0x4e, 0x75, // rts |
| 397 |
|
| 398 |
// Close() |
| 399 |
0x70, 0xe8, // moveq #-24,d0 |
| 400 |
0x4e, 0x75 // rts |
| 401 |
}; |
| 402 |
|
| 403 |
static const uint8 cdrom_driver[] = { // CD-ROM driver |
| 404 |
// Driver header |
| 405 |
CDROMDriverFlags >> 8, CDROMDriverFlags & 0xff, 0, 0, 0, 0, 0, 0, |
| 406 |
0x00, 0x1c, // Open() offset |
| 407 |
0x00, 0x20, // Prime() offset |
| 408 |
0x00, 0x24, // Control() offset |
| 409 |
0x00, 0x30, // Status() offset |
| 410 |
0x00, 0x56, // Close() offset |
| 411 |
0x08, 0x2e, 0x41, 0x70, 0x70, 0x6c, 0x65, 0x43, 0x44, 0x00, // ".AppleCD" |
| 412 |
|
| 413 |
// Open() |
| 414 |
M68K_EMUL_OP_CDROM_OPEN >> 8, M68K_EMUL_OP_CDROM_OPEN & 0xff, |
| 415 |
0x4e, 0x75, // rts |
| 416 |
|
| 417 |
// Prime() |
| 418 |
M68K_EMUL_OP_CDROM_PRIME >> 8, M68K_EMUL_OP_CDROM_PRIME & 0xff, |
| 419 |
0x60, 0x0e, // bra IOReturn |
| 420 |
|
| 421 |
// Control() |
| 422 |
M68K_EMUL_OP_CDROM_CONTROL >> 8, M68K_EMUL_OP_CDROM_CONTROL & 0xff, |
| 423 |
0x0c, 0x68, 0x00, 0x01, 0x00, 0x1a, // cmp.w #1,$1a(a0) |
| 424 |
0x66, 0x04, // bne IOReturn |
| 425 |
0x4e, 0x75, // rts |
| 426 |
|
| 427 |
// Status() |
| 428 |
M68K_EMUL_OP_CDROM_STATUS >> 8, M68K_EMUL_OP_CDROM_STATUS & 0xff, |
| 429 |
|
| 430 |
// IOReturn |
| 431 |
0x32, 0x28, 0x00, 0x06, // move.w 6(a0),d1 |
| 432 |
0x08, 0x01, 0x00, 0x09, // btst #9,d1 |
| 433 |
0x67, 0x0c, // beq 1 |
| 434 |
0x4a, 0x40, // tst.w d0 |
| 435 |
0x6f, 0x02, // ble 2 |
| 436 |
0x42, 0x40, // clr.w d0 |
| 437 |
0x31, 0x40, 0x00, 0x10, //2 move.w d0,$10(a0) |
| 438 |
0x4e, 0x75, // rts |
| 439 |
0x4a, 0x40, //1 tst.w d0 |
| 440 |
0x6f, 0x04, // ble 3 |
| 441 |
0x42, 0x40, // clr.w d0 |
| 442 |
0x4e, 0x75, // rts |
| 443 |
0x2f, 0x38, 0x08, 0xfc, //3 move.l $8fc,-(sp) |
| 444 |
0x4e, 0x75, // rts |
| 445 |
|
| 446 |
// Close() |
| 447 |
0x70, 0xe8, // moveq #-24,d0 |
| 448 |
0x4e, 0x75 // rts |
| 449 |
}; |
| 450 |
|
| 451 |
static uint32 long_ptr; |
| 452 |
|
| 453 |
static void SetLongBase(uint32 addr) |
| 454 |
{ |
| 455 |
long_ptr = addr; |
| 456 |
} |
| 457 |
|
| 458 |
static void Long(uint32 value) |
| 459 |
{ |
| 460 |
WriteMacInt32(long_ptr, value); |
| 461 |
long_ptr += 4; |
| 462 |
} |
| 463 |
|
| 464 |
static void gen_ain_driver(uintptr addr) |
| 465 |
{ |
| 466 |
SetLongBase(addr); |
| 467 |
|
| 468 |
// .AIn driver header |
| 469 |
Long(0x4d000000); Long(0x00000000); |
| 470 |
Long(0x00200040); Long(0x00600080); |
| 471 |
Long(0x00a0042e); Long(0x41496e00); |
| 472 |
Long(0x00000000); Long(0x00000000); |
| 473 |
Long(0xaafe0700); Long(0x00000000); |
| 474 |
Long(0x00000000); Long(0x00179822); |
| 475 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_NOTHING)); |
| 476 |
Long(0x00000000); Long(0x00000000); |
| 477 |
Long(0xaafe0700); Long(0x00000000); |
| 478 |
Long(0x00000000); Long(0x00179822); |
| 479 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_PRIME_IN)); |
| 480 |
Long(0x00000000); Long(0x00000000); |
| 481 |
Long(0xaafe0700); Long(0x00000000); |
| 482 |
Long(0x00000000); Long(0x00179822); |
| 483 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_CONTROL)); |
| 484 |
Long(0x00000000); Long(0x00000000); |
| 485 |
Long(0xaafe0700); Long(0x00000000); |
| 486 |
Long(0x00000000); Long(0x00179822); |
| 487 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_STATUS)); |
| 488 |
Long(0x00000000); Long(0x00000000); |
| 489 |
Long(0xaafe0700); Long(0x00000000); |
| 490 |
Long(0x00000000); Long(0x00179822); |
| 491 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_NOTHING)); |
| 492 |
Long(0x00000000); Long(0x00000000); |
| 493 |
}; |
| 494 |
|
| 495 |
static void gen_aout_driver(uintptr addr) |
| 496 |
{ |
| 497 |
SetLongBase(addr); |
| 498 |
|
| 499 |
// .AOut driver header |
| 500 |
Long(0x4d000000); Long(0x00000000); |
| 501 |
Long(0x00200040); Long(0x00600080); |
| 502 |
Long(0x00a0052e); Long(0x414f7574); |
| 503 |
Long(0x00000000); Long(0x00000000); |
| 504 |
Long(0xaafe0700); Long(0x00000000); |
| 505 |
Long(0x00000000); Long(0x00179822); |
| 506 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_OPEN)); |
| 507 |
Long(0x00000000); Long(0x00000000); |
| 508 |
Long(0xaafe0700); Long(0x00000000); |
| 509 |
Long(0x00000000); Long(0x00179822); |
| 510 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_PRIME_OUT)); |
| 511 |
Long(0x00000000); Long(0x00000000); |
| 512 |
Long(0xaafe0700); Long(0x00000000); |
| 513 |
Long(0x00000000); Long(0x00179822); |
| 514 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_CONTROL)); |
| 515 |
Long(0x00000000); Long(0x00000000); |
| 516 |
Long(0xaafe0700); Long(0x00000000); |
| 517 |
Long(0x00000000); Long(0x00179822); |
| 518 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_STATUS)); |
| 519 |
Long(0x00000000); Long(0x00000000); |
| 520 |
Long(0xaafe0700); Long(0x00000000); |
| 521 |
Long(0x00000000); Long(0x00179822); |
| 522 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_CLOSE)); |
| 523 |
Long(0x00000000); Long(0x00000000); |
| 524 |
}; |
| 525 |
|
| 526 |
static void gen_bin_driver(uintptr addr) |
| 527 |
{ |
| 528 |
SetLongBase(addr); |
| 529 |
|
| 530 |
// .BIn driver header |
| 531 |
Long(0x4d000000); Long(0x00000000); |
| 532 |
Long(0x00200040); Long(0x00600080); |
| 533 |
Long(0x00a0042e); Long(0x42496e00); |
| 534 |
Long(0x00000000); Long(0x00000000); |
| 535 |
Long(0xaafe0700); Long(0x00000000); |
| 536 |
Long(0x00000000); Long(0x00179822); |
| 537 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_NOTHING)); |
| 538 |
Long(0x00000000); Long(0x00000000); |
| 539 |
Long(0xaafe0700); Long(0x00000000); |
| 540 |
Long(0x00000000); Long(0x00179822); |
| 541 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_PRIME_IN)); |
| 542 |
Long(0x00000000); Long(0x00000000); |
| 543 |
Long(0xaafe0700); Long(0x00000000); |
| 544 |
Long(0x00000000); Long(0x00179822); |
| 545 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_CONTROL)); |
| 546 |
Long(0x00000000); Long(0x00000000); |
| 547 |
Long(0xaafe0700); Long(0x00000000); |
| 548 |
Long(0x00000000); Long(0x00179822); |
| 549 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_STATUS)); |
| 550 |
Long(0x00000000); Long(0x00000000); |
| 551 |
Long(0xaafe0700); Long(0x00000000); |
| 552 |
Long(0x00000000); Long(0x00179822); |
| 553 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_NOTHING)); |
| 554 |
Long(0x00000000); Long(0x00000000); |
| 555 |
}; |
| 556 |
|
| 557 |
static void gen_bout_driver(uintptr addr) |
| 558 |
{ |
| 559 |
SetLongBase(addr); |
| 560 |
|
| 561 |
// .BOut driver header |
| 562 |
Long(0x4d000000); Long(0x00000000); |
| 563 |
Long(0x00200040); Long(0x00600080); |
| 564 |
Long(0x00a0052e); Long(0x424f7574); |
| 565 |
Long(0x00000000); Long(0x00000000); |
| 566 |
Long(0xaafe0700); Long(0x00000000); |
| 567 |
Long(0x00000000); Long(0x00179822); |
| 568 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_OPEN)); |
| 569 |
Long(0x00000000); Long(0x00000000); |
| 570 |
Long(0xaafe0700); Long(0x00000000); |
| 571 |
Long(0x00000000); Long(0x00179822); |
| 572 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_PRIME_OUT)); |
| 573 |
Long(0x00000000); Long(0x00000000); |
| 574 |
Long(0xaafe0700); Long(0x00000000); |
| 575 |
Long(0x00000000); Long(0x00179822); |
| 576 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_CONTROL)); |
| 577 |
Long(0x00000000); Long(0x00000000); |
| 578 |
Long(0xaafe0700); Long(0x00000000); |
| 579 |
Long(0x00000000); Long(0x00179822); |
| 580 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_STATUS)); |
| 581 |
Long(0x00000000); Long(0x00000000); |
| 582 |
Long(0xaafe0700); Long(0x00000000); |
| 583 |
Long(0x00000000); Long(0x00179822); |
| 584 |
Long(0x00010004); Long(NativeTVECT(NATIVE_SERIAL_CLOSE)); |
| 585 |
Long(0x00000000); Long(0x00000000); |
| 586 |
}; |
| 587 |
|
| 588 |
static const uint8 adbop_patch[] = { // Call ADBOp() completion procedure |
| 589 |
// The completion procedure may call ADBOp() again! |
| 590 |
0x40, 0xe7, // move sr,-(sp) |
| 591 |
0x00, 0x7c, 0x07, 0x00, // ori #$0700,sr |
| 592 |
M68K_EMUL_OP_ADBOP >> 8, M68K_EMUL_OP_ADBOP & 0xff, |
| 593 |
0x48, 0xe7, 0x70, 0xf0, // movem.l d1-d3/a0-a3,-(sp) |
| 594 |
0x26, 0x48, // move.l a0,a3 |
| 595 |
0x4a, 0xab, 0x00, 0x04, // tst.l 4(a3) |
| 596 |
0x67, 0x00, 0x00, 0x18, // beq 1 |
| 597 |
0x20, 0x53, // move.l (a3),a0 |
| 598 |
0x22, 0x6b, 0x00, 0x04, // move.l 4(a3),a1 |
| 599 |
0x24, 0x6b, 0x00, 0x08, // move.l 8(a3),a2 |
| 600 |
0x26, 0x78, 0x0c, 0xf8, // move.l $cf8,a3 |
| 601 |
0x4e, 0x91, // jsr (a1) |
| 602 |
0x70, 0x00, // moveq #0,d0 |
| 603 |
0x60, 0x00, 0x00, 0x04, // bra 2 |
| 604 |
0x70, 0xff, //1 moveq #-1,d0 |
| 605 |
0x4c, 0xdf, 0x0f, 0x0e, //2 movem.l (sp)+,d1-d3/a0-a3 |
| 606 |
0x46, 0xdf, // move (sp)+,sr |
| 607 |
0x4e, 0x75 // rts |
| 608 |
}; |
| 609 |
|
| 610 |
|
| 611 |
/* |
| 612 |
* Copy PowerPC code to ROM image and reverse bytes if necessary |
| 613 |
*/ |
| 614 |
|
| 615 |
static inline void memcpy_powerpc_code(void *dst, const void *src, size_t len) |
| 616 |
{ |
| 617 |
#ifdef WORDS_BIGENDIAN |
| 618 |
(void)memcpy(dst, src, len); |
| 619 |
#else |
| 620 |
uint32 *d = (uint32 *)dst; |
| 621 |
uint32 *s = (uint32 *)src; |
| 622 |
for (int i = 0; i < len/4; i++) |
| 623 |
d[i] = htonl(s[i]); |
| 624 |
#endif |
| 625 |
} |
| 626 |
|
| 627 |
|
| 628 |
/* |
| 629 |
* Install ROM patches (RAMBase and KernelDataAddr must be set) |
| 630 |
*/ |
| 631 |
|
| 632 |
bool PatchROM(void) |
| 633 |
{ |
| 634 |
// Print ROM info |
| 635 |
D(bug("Checksum: %08lx\n", ntohl(*(uint32 *)ROM_BASE))); |
| 636 |
D(bug("Version: %04x\n", ntohs(*(uint16 *)(ROM_BASE + 8)))); |
| 637 |
D(bug("Sub Version: %04x\n", ntohs(*(uint16 *)(ROM_BASE + 18)))); |
| 638 |
D(bug("Nanokernel ID: %s\n", (char *)ROM_BASE + 0x30d064)); |
| 639 |
D(bug("Resource Map at %08lx\n", ntohl(*(uint32 *)(ROM_BASE + 26)))); |
| 640 |
D(bug("Trap Tables at %08lx\n\n", ntohl(*(uint32 *)(ROM_BASE + 34)))); |
| 641 |
|
| 642 |
// Detect ROM type |
| 643 |
if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot TNT", 8)) |
| 644 |
ROMType = ROMTYPE_TNT; |
| 645 |
else if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot Alchemy", 12)) |
| 646 |
ROMType = ROMTYPE_ALCHEMY; |
| 647 |
else if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot Zanzibar", 13)) |
| 648 |
ROMType = ROMTYPE_ZANZIBAR; |
| 649 |
else if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot Gazelle", 12)) |
| 650 |
ROMType = ROMTYPE_GAZELLE; |
| 651 |
else if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot Gossamer", 13)) |
| 652 |
ROMType = ROMTYPE_GOSSAMER; |
| 653 |
else if (!memcmp((void *)(ROM_BASE + 0x30d064), "NewWorld", 8)) |
| 654 |
ROMType = ROMTYPE_NEWWORLD; |
| 655 |
else |
| 656 |
return false; |
| 657 |
|
| 658 |
// Check that other ROM addresses point to really free regions |
| 659 |
if (ntohl(*(uint32 *)(ROM_BASE + CHECK_LOAD_PATCH_SPACE)) != 0x6b636b63) |
| 660 |
return false; |
| 661 |
if (ntohl(*(uint32 *)(ROM_BASE + PUT_SCRAP_PATCH_SPACE)) != 0x6b636b63) |
| 662 |
return false; |
| 663 |
if (ntohl(*(uint32 *)(ROM_BASE + GET_SCRAP_PATCH_SPACE)) != 0x6b636b63) |
| 664 |
return false; |
| 665 |
if (ntohl(*(uint32 *)(ROM_BASE + ADDR_MAP_PATCH_SPACE)) != 0x6b636b63) |
| 666 |
return false; |
| 667 |
|
| 668 |
// Apply patches |
| 669 |
if (!patch_nanokernel_boot()) return false; |
| 670 |
if (!patch_68k_emul()) return false; |
| 671 |
if (!patch_nanokernel()) return false; |
| 672 |
if (!patch_68k()) return false; |
| 673 |
|
| 674 |
#ifdef M68K_BREAK_POINT |
| 675 |
// Install 68k breakpoint |
| 676 |
uint16 *wp = (uint16 *)(ROM_BASE + M68K_BREAK_POINT); |
| 677 |
*wp++ = htons(M68K_EMUL_BREAK); |
| 678 |
*wp = htons(M68K_EMUL_RETURN); |
| 679 |
#endif |
| 680 |
|
| 681 |
#ifdef POWERPC_BREAK_POINT |
| 682 |
// Install PowerPC breakpoint |
| 683 |
uint32 *lp = (uint32 *)(ROM_BASE + POWERPC_BREAK_POINT); |
| 684 |
*lp = htonl(0); |
| 685 |
#endif |
| 686 |
|
| 687 |
// Copy 68k emulator to 2MB boundary |
| 688 |
memcpy((void *)(ROM_BASE + ROM_SIZE), (void *)(ROM_BASE + ROM_SIZE - 0x100000), 0x100000); |
| 689 |
return true; |
| 690 |
} |
| 691 |
|
| 692 |
|
| 693 |
/* |
| 694 |
* Nanokernel boot routine patches |
| 695 |
*/ |
| 696 |
|
| 697 |
static bool patch_nanokernel_boot(void) |
| 698 |
{ |
| 699 |
uint32 *lp; |
| 700 |
|
| 701 |
// ROM boot structure patches |
| 702 |
lp = (uint32 *)(ROM_BASE + 0x30d000); |
| 703 |
lp[0x9c >> 2] = htonl(KernelDataAddr); // LA_InfoRecord |
| 704 |
lp[0xa0 >> 2] = htonl(KernelDataAddr); // LA_KernelData |
| 705 |
lp[0xa4 >> 2] = htonl(KernelDataAddr + 0x1000); // LA_EmulatorData |
| 706 |
lp[0xa8 >> 2] = htonl(ROM_BASE + 0x480000); // LA_DispatchTable |
| 707 |
lp[0xac >> 2] = htonl(ROM_BASE + 0x460000); // LA_EmulatorCode |
| 708 |
lp[0x360 >> 2] = htonl(0); // Physical RAM base (? on NewWorld ROM, this contains -1) |
| 709 |
lp[0xfd8 >> 2] = htonl(ROM_BASE + 0x2a); // 68k reset vector |
| 710 |
|
| 711 |
// Skip SR/BAT/SDR init |
| 712 |
if (ROMType == ROMTYPE_GAZELLE || ROMType == ROMTYPE_GOSSAMER || ROMType == ROMTYPE_NEWWORLD) { |
| 713 |
lp = (uint32 *)(ROM_BASE + 0x310000); |
| 714 |
*lp++ = htonl(POWERPC_NOP); |
| 715 |
*lp = htonl(0x38000000); |
| 716 |
} |
| 717 |
static const uint32 sr_init_loc[] = {0x3101b0, 0x3101b0, 0x3101b0, 0x3101ec, 0x3101fc, 0x310200}; |
| 718 |
lp = (uint32 *)(ROM_BASE + 0x310008); |
| 719 |
*lp = htonl(0x48000000 | (sr_init_loc[ROMType] - 8) & 0xffff); // b ROM_BASE+0x3101b0 |
| 720 |
lp = (uint32 *)(ROM_BASE + sr_init_loc[ROMType]); |
| 721 |
*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA); // lwz r1,(pointer to Kernel Data) |
| 722 |
*lp++ = htonl(0x3da0dead); // lis r13,0xdead (start of kernel memory) |
| 723 |
*lp++ = htonl(0x3dc00010); // lis r14,0x0010 (size of page table) |
| 724 |
*lp = htonl(0x3de00010); // lis r15,0x0010 (size of kernel memory) |
| 725 |
|
| 726 |
// Don't read PVR |
| 727 |
static const uint32 pvr_loc[] = {0x3103b0, 0x3103b4, 0x3103b4, 0x310400, 0x310430, 0x310438}; |
| 728 |
lp = (uint32 *)(ROM_BASE + pvr_loc[ROMType]); |
| 729 |
*lp = htonl(0x81800000 + XLM_PVR); // lwz r12,(theoretical PVR) |
| 730 |
|
| 731 |
// Set CPU specific data (even if ROM doesn't have support for that CPU) |
| 732 |
lp = (uint32 *)(ROM_BASE + pvr_loc[ROMType]); |
| 733 |
if (ntohl(lp[6]) != 0x2c0c0001) |
| 734 |
return false; |
| 735 |
uint32 ofs = ntohl(lp[7]) & 0xffff; |
| 736 |
D(bug("ofs %08lx\n", ofs)); |
| 737 |
lp[8] = htonl((ntohl(lp[8]) & 0xffff) | 0x48000000); // beq -> b |
| 738 |
uint32 loc = (ntohl(lp[8]) & 0xffff) + (uint32)(lp+8) - ROM_BASE; |
| 739 |
D(bug("loc %08lx\n", loc)); |
| 740 |
lp = (uint32 *)(ROM_BASE + ofs + 0x310000); |
| 741 |
switch (PVR >> 16) { |
| 742 |
case 1: // 601 |
| 743 |
lp[0] = htonl(0x1000); // Page size |
| 744 |
lp[1] = htonl(0x8000); // Data cache size |
| 745 |
lp[2] = htonl(0x8000); // Inst cache size |
| 746 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 747 |
lp[4] = htonl(0x00010040); // Unified caches/Inst cache line size |
| 748 |
lp[5] = htonl(0x00400020); // Data cache line size/Data cache block size touch |
| 749 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 750 |
lp[7] = htonl(0x00080008); // Inst cache assoc/Data cache assoc |
| 751 |
lp[8] = htonl(0x01000002); // TLB total size/TLB assoc |
| 752 |
break; |
| 753 |
case 3: // 603 |
| 754 |
lp[0] = htonl(0x1000); // Page size |
| 755 |
lp[1] = htonl(0x2000); // Data cache size |
| 756 |
lp[2] = htonl(0x2000); // Inst cache size |
| 757 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 758 |
lp[4] = htonl(0x00000020); // Unified caches/Inst cache line size |
| 759 |
lp[5] = htonl(0x00200020); // Data cache line size/Data cache block size touch |
| 760 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 761 |
lp[7] = htonl(0x00020002); // Inst cache assoc/Data cache assoc |
| 762 |
lp[8] = htonl(0x00400002); // TLB total size/TLB assoc |
| 763 |
break; |
| 764 |
case 4: // 604 |
| 765 |
lp[0] = htonl(0x1000); // Page size |
| 766 |
lp[1] = htonl(0x4000); // Data cache size |
| 767 |
lp[2] = htonl(0x4000); // Inst cache size |
| 768 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 769 |
lp[4] = htonl(0x00000020); // Unified caches/Inst cache line size |
| 770 |
lp[5] = htonl(0x00200020); // Data cache line size/Data cache block size touch |
| 771 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 772 |
lp[7] = htonl(0x00040004); // Inst cache assoc/Data cache assoc |
| 773 |
lp[8] = htonl(0x00800002); // TLB total size/TLB assoc |
| 774 |
break; |
| 775 |
// case 5: // 740? |
| 776 |
case 6: // 603e |
| 777 |
case 7: // 603ev |
| 778 |
lp[0] = htonl(0x1000); // Page size |
| 779 |
lp[1] = htonl(0x4000); // Data cache size |
| 780 |
lp[2] = htonl(0x4000); // Inst cache size |
| 781 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 782 |
lp[4] = htonl(0x00000020); // Unified caches/Inst cache line size |
| 783 |
lp[5] = htonl(0x00200020); // Data cache line size/Data cache block size touch |
| 784 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 785 |
lp[7] = htonl(0x00040004); // Inst cache assoc/Data cache assoc |
| 786 |
lp[8] = htonl(0x00400002); // TLB total size/TLB assoc |
| 787 |
break; |
| 788 |
case 8: // 750 |
| 789 |
lp[0] = htonl(0x1000); // Page size |
| 790 |
lp[1] = htonl(0x8000); // Data cache size |
| 791 |
lp[2] = htonl(0x8000); // Inst cache size |
| 792 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 793 |
lp[4] = htonl(0x00000020); // Unified caches/Inst cache line size |
| 794 |
lp[5] = htonl(0x00200020); // Data cache line size/Data cache block size touch |
| 795 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 796 |
lp[7] = htonl(0x00080008); // Inst cache assoc/Data cache assoc |
| 797 |
lp[8] = htonl(0x00800002); // TLB total size/TLB assoc |
| 798 |
break; |
| 799 |
case 9: // 604e |
| 800 |
case 10: // 604ev5 |
| 801 |
lp[0] = htonl(0x1000); // Page size |
| 802 |
lp[1] = htonl(0x8000); // Data cache size |
| 803 |
lp[2] = htonl(0x8000); // Inst cache size |
| 804 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 805 |
lp[4] = htonl(0x00000020); // Unified caches/Inst cache line size |
| 806 |
lp[5] = htonl(0x00200020); // Data cache line size/Data cache block size touch |
| 807 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 808 |
lp[7] = htonl(0x00040004); // Inst cache assoc/Data cache assoc |
| 809 |
lp[8] = htonl(0x00800002); // TLB total size/TLB assoc |
| 810 |
break; |
| 811 |
// case 11: // X704? |
| 812 |
case 12: // ??? |
| 813 |
lp[0] = htonl(0x1000); // Page size |
| 814 |
lp[1] = htonl(0x8000); // Data cache size |
| 815 |
lp[2] = htonl(0x8000); // Inst cache size |
| 816 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 817 |
lp[4] = htonl(0x00000020); // Unified caches/Inst cache line size |
| 818 |
lp[5] = htonl(0x00200020); // Data cache line size/Data cache block size touch |
| 819 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 820 |
lp[7] = htonl(0x00080008); // Inst cache assoc/Data cache assoc |
| 821 |
lp[8] = htonl(0x00800002); // TLB total size/TLB assoc |
| 822 |
break; |
| 823 |
case 13: // ??? |
| 824 |
lp[0] = htonl(0x1000); // Page size |
| 825 |
lp[1] = htonl(0x8000); // Data cache size |
| 826 |
lp[2] = htonl(0x8000); // Inst cache size |
| 827 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 828 |
lp[4] = htonl(0x00000020); // Unified caches/Inst cache line size |
| 829 |
lp[5] = htonl(0x00200020); // Data cache line size/Data cache block size touch |
| 830 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 831 |
lp[7] = htonl(0x00080008); // Inst cache assoc/Data cache assoc |
| 832 |
lp[8] = htonl(0x01000004); // TLB total size/TLB assoc |
| 833 |
break; |
| 834 |
// case 50: // 821 |
| 835 |
// case 80: // 860 |
| 836 |
case 96: // ??? |
| 837 |
lp[0] = htonl(0x1000); // Page size |
| 838 |
lp[1] = htonl(0x8000); // Data cache size |
| 839 |
lp[2] = htonl(0x8000); // Inst cache size |
| 840 |
lp[3] = htonl(0x00200020); // Coherency block size/Reservation granule size |
| 841 |
lp[4] = htonl(0x00010020); // Unified caches/Inst cache line size |
| 842 |
lp[5] = htonl(0x00200020); // Data cache line size/Data cache block size touch |
| 843 |
lp[6] = htonl(0x00200020); // Inst cache block size/Data cache block size |
| 844 |
lp[7] = htonl(0x00080008); // Inst cache assoc/Data cache assoc |
| 845 |
lp[8] = htonl(0x00800004); // TLB total size/TLB assoc |
| 846 |
break; |
| 847 |
default: |
| 848 |
printf("WARNING: Unknown CPU type\n"); |
| 849 |
break; |
| 850 |
} |
| 851 |
|
| 852 |
// Don't set SPRG3, don't test MQ |
| 853 |
lp = (uint32 *)(ROM_BASE + loc + 0x20); |
| 854 |
*lp++ = htonl(POWERPC_NOP); |
| 855 |
lp++; |
| 856 |
*lp++ = htonl(POWERPC_NOP); |
| 857 |
lp++; |
| 858 |
*lp = htonl(POWERPC_NOP); |
| 859 |
|
| 860 |
// Don't read MSR |
| 861 |
lp = (uint32 *)(ROM_BASE + loc + 0x40); |
| 862 |
*lp = htonl(0x39c00000); // li r14,0 |
| 863 |
|
| 864 |
// Don't write to DEC |
| 865 |
lp = (uint32 *)(ROM_BASE + loc + 0x70); |
| 866 |
*lp++ = htonl(POWERPC_NOP); |
| 867 |
loc = (ntohl(lp[0]) & 0xffff) + (uint32)lp - ROM_BASE; |
| 868 |
D(bug("loc %08lx\n", loc)); |
| 869 |
|
| 870 |
// Don't set SPRG3 |
| 871 |
lp = (uint32 *)(ROM_BASE + loc + 0x2c); |
| 872 |
*lp = htonl(POWERPC_NOP); |
| 873 |
|
| 874 |
// Don't read PVR |
| 875 |
static const uint32 pvr_ofs[] = {0x138, 0x138, 0x138, 0x140, 0x148, 0x148}; |
| 876 |
lp = (uint32 *)(ROM_BASE + loc + pvr_ofs[ROMType]); |
| 877 |
*lp = htonl(0x82e00000 + XLM_PVR); // lwz r23,(theoretical PVR) |
| 878 |
lp = (uint32 *)(ROM_BASE + loc + 0x170); |
| 879 |
if (ntohl(*lp) == 0x7eff42a6) // NewWorld or Gossamer ROM |
| 880 |
*lp = htonl(0x82e00000 + XLM_PVR); // lwz r23,(theoretical PVR) |
| 881 |
lp = (uint32 *)(ROM_BASE + 0x313134); |
| 882 |
if (ntohl(*lp) == 0x7e5f42a6) |
| 883 |
*lp = htonl(0x82400000 + XLM_PVR); // lwz r18,(theoretical PVR) |
| 884 |
lp = (uint32 *)(ROM_BASE + 0x3131f4); |
| 885 |
if (ntohl(*lp) == 0x7e5f42a6) // NewWorld ROM |
| 886 |
*lp = htonl(0x82400000 + XLM_PVR); // lwz r18,(theoretical PVR) |
| 887 |
lp = (uint32 *)(ROM_BASE + 0x314600); |
| 888 |
if (ntohl(*lp) == 0x7d3f42a6) |
| 889 |
*lp = htonl(0x81200000 + XLM_PVR); // lzw r9,(theoritical PVR) |
| 890 |
|
| 891 |
// Don't read SDR1 |
| 892 |
static const uint32 sdr1_ofs[] = {0x174, 0x174, 0x174, 0x17c, 0x19c, 0x19c}; |
| 893 |
lp = (uint32 *)(ROM_BASE + loc + sdr1_ofs[ROMType]); |
| 894 |
*lp++ = htonl(0x3d00dead); // lis r8,0xdead (pointer to page table) |
| 895 |
*lp++ = htonl(0x3ec0001f); // lis r22,0x001f (size of page table) |
| 896 |
*lp = htonl(POWERPC_NOP); |
| 897 |
|
| 898 |
// Don't clear page table |
| 899 |
static const uint32 pgtb_ofs[] = {0x198, 0x198, 0x198, 0x1a0, 0x1c0, 0x1c4}; |
| 900 |
lp = (uint32 *)(ROM_BASE + loc + pgtb_ofs[ROMType]); |
| 901 |
*lp = htonl(POWERPC_NOP); |
| 902 |
|
| 903 |
// Don't invalidate TLB |
| 904 |
static const uint32 tlb_ofs[] = {0x1a0, 0x1a0, 0x1a0, 0x1a8, 0x1c8, 0x1cc}; |
| 905 |
lp = (uint32 *)(ROM_BASE + loc + tlb_ofs[ROMType]); |
| 906 |
*lp = htonl(POWERPC_NOP); |
| 907 |
|
| 908 |
// Don't create RAM descriptor table |
| 909 |
static const uint32 desc_ofs[] = {0x350, 0x350, 0x350, 0x358, 0x378, 0x37c}; |
| 910 |
lp = (uint32 *)(ROM_BASE + loc + desc_ofs[ROMType]); |
| 911 |
*lp = htonl(POWERPC_NOP); |
| 912 |
|
| 913 |
// Don't load SRs and BATs |
| 914 |
static const uint32 sr_ofs[] = {0x3d8, 0x3d8, 0x3d8, 0x3e0, 0x400, 0x404}; |
| 915 |
lp = (uint32 *)(ROM_BASE + loc + sr_ofs[ROMType]); |
| 916 |
*lp = htonl(POWERPC_NOP); |
| 917 |
|
| 918 |
// Don't mess with SRs |
| 919 |
static const uint32 sr2_ofs[] = {0x312118, 0x312118, 0x312118, 0x312118, 0x312118, 0x3121b4}; |
| 920 |
lp = (uint32 *)(ROM_BASE + sr2_ofs[ROMType]); |
| 921 |
*lp = htonl(POWERPC_BLR); |
| 922 |
|
| 923 |
// Don't check performance monitor |
| 924 |
static const uint32 pm_ofs[] = {0x313148, 0x313148, 0x313148, 0x313148, 0x313158, 0x313218}; |
| 925 |
lp = (uint32 *)(ROM_BASE + pm_ofs[ROMType]); |
| 926 |
while (ntohl(*lp) != 0x7e58eba6) lp++; |
| 927 |
*lp++ = htonl(POWERPC_NOP); |
| 928 |
while (ntohl(*lp) != 0x7e78eaa6) lp++; |
| 929 |
*lp++ = htonl(POWERPC_NOP); |
| 930 |
while (ntohl(*lp) != 0x7e59eba6) lp++; |
| 931 |
*lp++ = htonl(POWERPC_NOP); |
| 932 |
while (ntohl(*lp) != 0x7e79eaa6) lp++; |
| 933 |
*lp++ = htonl(POWERPC_NOP); |
| 934 |
while (ntohl(*lp) != 0x7e5aeba6) lp++; |
| 935 |
*lp++ = htonl(POWERPC_NOP); |
| 936 |
while (ntohl(*lp) != 0x7e7aeaa6) lp++; |
| 937 |
*lp++ = htonl(POWERPC_NOP); |
| 938 |
while (ntohl(*lp) != 0x7e5beba6) lp++; |
| 939 |
*lp++ = htonl(POWERPC_NOP); |
| 940 |
while (ntohl(*lp) != 0x7e7beaa6) lp++; |
| 941 |
*lp++ = htonl(POWERPC_NOP); |
| 942 |
while (ntohl(*lp) != 0x7e5feba6) lp++; |
| 943 |
*lp++ = htonl(POWERPC_NOP); |
| 944 |
while (ntohl(*lp) != 0x7e7feaa6) lp++; |
| 945 |
*lp++ = htonl(POWERPC_NOP); |
| 946 |
while (ntohl(*lp) != 0x7e5ceba6) lp++; |
| 947 |
*lp++ = htonl(POWERPC_NOP); |
| 948 |
while (ntohl(*lp) != 0x7e7ceaa6) lp++; |
| 949 |
*lp++ = htonl(POWERPC_NOP); |
| 950 |
while (ntohl(*lp) != 0x7e5deba6) lp++; |
| 951 |
*lp++ = htonl(POWERPC_NOP); |
| 952 |
while (ntohl(*lp) != 0x7e7deaa6) lp++; |
| 953 |
*lp++ = htonl(POWERPC_NOP); |
| 954 |
while (ntohl(*lp) != 0x7e5eeba6) lp++; |
| 955 |
*lp++ = htonl(POWERPC_NOP); |
| 956 |
while (ntohl(*lp) != 0x7e7eeaa6) lp++; |
| 957 |
*lp++ = htonl(POWERPC_NOP); |
| 958 |
|
| 959 |
// Jump to 68k emulator |
| 960 |
static const uint32 jump68k_ofs[] = {0x40c, 0x40c, 0x40c, 0x414, 0x434, 0x438}; |
| 961 |
lp = (uint32 *)(ROM_BASE + loc + jump68k_ofs[ROMType]); |
| 962 |
*lp++ = htonl(0x80610634); // lwz r3,0x0634(r1) (pointer to Emulator Data) |
| 963 |
*lp++ = htonl(0x8081119c); // lwz r4,0x119c(r1) (pointer to opcode table) |
| 964 |
*lp++ = htonl(0x80011184); // lwz r0,0x1184(r1) (pointer to emulator init routine) |
| 965 |
*lp++ = htonl(0x7c0903a6); // mtctr r0 |
| 966 |
*lp = htonl(POWERPC_BCTR); |
| 967 |
return true; |
| 968 |
} |
| 969 |
|
| 970 |
|
| 971 |
/* |
| 972 |
* 68k emulator patches |
| 973 |
*/ |
| 974 |
|
| 975 |
static bool patch_68k_emul(void) |
| 976 |
{ |
| 977 |
uint32 *lp; |
| 978 |
uint32 base; |
| 979 |
|
| 980 |
// Overwrite twi instructions |
| 981 |
static const uint32 twi_loc[] = {0x36e680, 0x36e6c0, 0x36e6c0, 0x36e6c0, 0x36e740, 0x36e740}; |
| 982 |
base = twi_loc[ROMType]; |
| 983 |
lp = (uint32 *)(ROM_BASE + base); |
| 984 |
*lp++ = htonl(0x48000000 + 0x36f900 - base); // b 0x36f900 (Emulator start) |
| 985 |
*lp++ = htonl(0x48000000 + 0x36fa00 - base - 4); // b 0x36fa00 (Mixed mode) |
| 986 |
*lp++ = htonl(0x48000000 + 0x36fb00 - base - 8); // b 0x36fb00 (Reset/FC1E opcode) |
| 987 |
*lp++ = htonl(0x48000000 + 0x36fc00 - base - 12); // FE0A opcode |
| 988 |
*lp++ = htonl(POWERPC_ILLEGAL); // Interrupt |
| 989 |
*lp++ = htonl(POWERPC_ILLEGAL); // ? |
| 990 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 991 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 992 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 993 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 994 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 995 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 996 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 997 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 998 |
*lp++ = htonl(POWERPC_ILLEGAL); |
| 999 |
*lp = htonl(POWERPC_ILLEGAL); |
| 1000 |
|
| 1001 |
#if EMULATED_PPC |
| 1002 |
// Install EMUL_RETURN, EXEC_RETURN, EXEC_NATIVE and EMUL_OP opcodes |
| 1003 |
lp = (uint32 *)(ROM_BASE + 0x380000 + (M68K_EMUL_RETURN << 3)); |
| 1004 |
*lp++ = htonl(POWERPC_EMUL_OP); |
| 1005 |
*lp++ = htonl(0x4bf66e80); // b 0x366084 |
| 1006 |
*lp++ = htonl(POWERPC_EMUL_OP | 1); |
| 1007 |
*lp++ = htonl(0x4bf66e78); // b 0x366084 |
| 1008 |
*lp++ = htonl(POWERPC_EMUL_OP | 2); |
| 1009 |
*lp++ = htonl(0x4bf66e70); // b 0x366084 |
| 1010 |
for (int i=0; i<OP_MAX; i++) { |
| 1011 |
*lp++ = htonl(POWERPC_EMUL_OP | (i + 3)); |
| 1012 |
*lp++ = htonl(0x4bf66e68 - i*8); // b 0x366084 |
| 1013 |
} |
| 1014 |
#else |
| 1015 |
// Install EMUL_RETURN, EXEC_RETURN and EMUL_OP opcodes |
| 1016 |
lp = (uint32 *)(ROM_BASE + 0x380000 + (M68K_EMUL_RETURN << 3)); |
| 1017 |
*lp++ = htonl(0x80000000 + XLM_EMUL_RETURN_PROC); // lwz r0,XLM_EMUL_RETURN_PROC |
| 1018 |
*lp++ = htonl(0x4bf705fc); // b 0x36f800 |
| 1019 |
*lp++ = htonl(0x80000000 + XLM_EXEC_RETURN_PROC); // lwz r0,XLM_EXEC_RETURN_PROC |
| 1020 |
*lp++ = htonl(0x4bf705f4); // b 0x36f800 |
| 1021 |
*lp++ = htonl(0x00dead00); // Let SheepShaver crash, since |
| 1022 |
*lp++ = htonl(0x00beef00); // no native opcode is available |
| 1023 |
for (int i=0; i<OP_MAX; i++) { |
| 1024 |
*lp++ = htonl(0x38a00000 + i); // li r5,OP_* |
| 1025 |
*lp++ = htonl(0x4bf705ec - i*8); // b 0x36f808 |
| 1026 |
} |
| 1027 |
|
| 1028 |
// Extra routines for EMUL_RETURN/EXEC_RETURN/EMUL_OP |
| 1029 |
lp = (uint32 *)(ROM_BASE + 0x36f800); |
| 1030 |
*lp++ = htonl(0x7c0803a6); // mtlr r0 |
| 1031 |
*lp++ = htonl(0x4e800020); // blr |
| 1032 |
|
| 1033 |
*lp++ = htonl(0x80000000 + XLM_EMUL_OP_PROC); // lwz r0,XLM_EMUL_OP_PROC |
| 1034 |
*lp++ = htonl(0x7c0803a6); // mtlr r0 |
| 1035 |
*lp = htonl(0x4e800020); // blr |
| 1036 |
#endif |
| 1037 |
|
| 1038 |
// Extra routine for 68k emulator start |
| 1039 |
lp = (uint32 *)(ROM_BASE + 0x36f900); |
| 1040 |
*lp++ = htonl(0x7c2903a6); // mtctr r1 |
| 1041 |
#if EMULATED_PPC |
| 1042 |
*lp++ = htonl(NativeOpcode(NATIVE_DISABLE_INTERRUPT)); |
| 1043 |
#else |
| 1044 |
*lp++ = htonl(0x80200000 + XLM_IRQ_NEST); // lwz r1,XLM_IRQ_NEST |
| 1045 |
*lp++ = htonl(0x38210001); // addi r1,r1,1 |
| 1046 |
*lp++ = htonl(0x90200000 + XLM_IRQ_NEST); // stw r1,XLM_IRQ_NEST |
| 1047 |
#endif |
| 1048 |
*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz r1,XLM_KERNEL_DATA |
| 1049 |
*lp++ = htonl(0x90c10018); // stw r6,0x18(r1) |
| 1050 |
*lp++ = htonl(0x7cc902a6); // mfctr r6 |
| 1051 |
*lp++ = htonl(0x90c10004); // stw r6,$0004(r1) |
| 1052 |
*lp++ = htonl(0x80c1065c); // lwz r6,$065c(r1) |
| 1053 |
*lp++ = htonl(0x90e6013c); // stw r7,$013c(r6) |
| 1054 |
*lp++ = htonl(0x91060144); // stw r8,$0144(r6) |
| 1055 |
*lp++ = htonl(0x9126014c); // stw r9,$014c(r6) |
| 1056 |
*lp++ = htonl(0x91460154); // stw r10,$0154(r6) |
| 1057 |
*lp++ = htonl(0x9166015c); // stw r11,$015c(r6) |
| 1058 |
*lp++ = htonl(0x91860164); // stw r12,$0164(r6) |
| 1059 |
*lp++ = htonl(0x91a6016c); // stw r13,$016c(r6) |
| 1060 |
*lp++ = htonl(0x7da00026); // mfcr r13 |
| 1061 |
*lp++ = htonl(0x80e10660); // lwz r7,$0660(r1) |
| 1062 |
*lp++ = htonl(0x7d8802a6); // mflr r12 |
| 1063 |
*lp++ = htonl(0x50e74001); // rlwimi. r7,r7,8,$80000000 |
| 1064 |
*lp++ = htonl(0x814105f0); // lwz r10,0x05f0(r1) |
| 1065 |
*lp++ = htonl(0x7d4803a6); // mtlr r10 |
| 1066 |
*lp++ = htonl(0x7d8a6378); // mr r10,r12 |
| 1067 |
*lp++ = htonl(0x3d600002); // lis r11,0x0002 |
| 1068 |
*lp++ = htonl(0x616bf072); // ori r11,r11,0xf072 (MSR) |
| 1069 |
*lp++ = htonl(0x50e7deb4); // rlwimi r7,r7,27,$00000020 |
| 1070 |
*lp = htonl(0x4e800020); // blr |
| 1071 |
|
| 1072 |
// Extra routine for Mixed Mode |
| 1073 |
lp = (uint32 *)(ROM_BASE + 0x36fa00); |
| 1074 |
*lp++ = htonl(0x7c2903a6); // mtctr r1 |
| 1075 |
#if EMULATED_PPC |
| 1076 |
*lp++ = htonl(NativeOpcode(NATIVE_DISABLE_INTERRUPT)); |
| 1077 |
#else |
| 1078 |
*lp++ = htonl(0x80200000 + XLM_IRQ_NEST); // lwz r1,XLM_IRQ_NEST |
| 1079 |
*lp++ = htonl(0x38210001); // addi r1,r1,1 |
| 1080 |
*lp++ = htonl(0x90200000 + XLM_IRQ_NEST); // stw r1,XLM_IRQ_NEST |
| 1081 |
#endif |
| 1082 |
*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz r1,XLM_KERNEL_DATA |
| 1083 |
*lp++ = htonl(0x90c10018); // stw r6,0x18(r1) |
| 1084 |
*lp++ = htonl(0x7cc902a6); // mfctr r6 |
| 1085 |
*lp++ = htonl(0x90c10004); // stw r6,$0004(r1) |
| 1086 |
*lp++ = htonl(0x80c1065c); // lwz r6,$065c(r1) |
| 1087 |
*lp++ = htonl(0x90e6013c); // stw r7,$013c(r6) |
| 1088 |
*lp++ = htonl(0x91060144); // stw r8,$0144(r6) |
| 1089 |
*lp++ = htonl(0x9126014c); // stw r9,$014c(r6) |
| 1090 |
*lp++ = htonl(0x91460154); // stw r10,$0154(r6) |
| 1091 |
*lp++ = htonl(0x9166015c); // stw r11,$015c(r6) |
| 1092 |
*lp++ = htonl(0x91860164); // stw r12,$0164(r6) |
| 1093 |
*lp++ = htonl(0x91a6016c); // stw r13,$016c(r6) |
| 1094 |
*lp++ = htonl(0x7da00026); // mfcr r13 |
| 1095 |
*lp++ = htonl(0x80e10660); // lwz r7,$0660(r1) |
| 1096 |
*lp++ = htonl(0x7d8802a6); // mflr r12 |
| 1097 |
*lp++ = htonl(0x50e74001); // rlwimi. r7,r7,8,$80000000 |
| 1098 |
*lp++ = htonl(0x814105f4); // lwz r10,0x05f4(r1) |
| 1099 |
*lp++ = htonl(0x7d4803a6); // mtlr r10 |
| 1100 |
*lp++ = htonl(0x7d8a6378); // mr r10,r12 |
| 1101 |
*lp++ = htonl(0x3d600002); // lis r11,0x0002 |
| 1102 |
*lp++ = htonl(0x616bf072); // ori r11,r11,0xf072 (MSR) |
| 1103 |
*lp++ = htonl(0x50e7deb4); // rlwimi r7,r7,27,$00000020 |
| 1104 |
*lp = htonl(0x4e800020); // blr |
| 1105 |
|
| 1106 |
// Extra routine for Reset/FC1E opcode |
| 1107 |
lp = (uint32 *)(ROM_BASE + 0x36fb00); |
| 1108 |
*lp++ = htonl(0x7c2903a6); // mtctr r1 |
| 1109 |
#if EMULATED_PPC |
| 1110 |
*lp++ = htonl(NativeOpcode(NATIVE_DISABLE_INTERRUPT)); |
| 1111 |
#else |
| 1112 |
*lp++ = htonl(0x80200000 + XLM_IRQ_NEST); // lwz r1,XLM_IRQ_NEST |
| 1113 |
*lp++ = htonl(0x38210001); // addi r1,r1,1 |
| 1114 |
*lp++ = htonl(0x90200000 + XLM_IRQ_NEST); // stw r1,XLM_IRQ_NEST |
| 1115 |
#endif |
| 1116 |
*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz r1,XLM_KERNEL_DATA |
| 1117 |
*lp++ = htonl(0x90c10018); // stw r6,0x18(r1) |
| 1118 |
*lp++ = htonl(0x7cc902a6); // mfctr r6 |
| 1119 |
*lp++ = htonl(0x90c10004); // stw r6,$0004(r1) |
| 1120 |
*lp++ = htonl(0x80c1065c); // lwz r6,$065c(r1) |
| 1121 |
*lp++ = htonl(0x90e6013c); // stw r7,$013c(r6) |
| 1122 |
*lp++ = htonl(0x91060144); // stw r8,$0144(r6) |
| 1123 |
*lp++ = htonl(0x9126014c); // stw r9,$014c(r6) |
| 1124 |
*lp++ = htonl(0x91460154); // stw r10,$0154(r6) |
| 1125 |
*lp++ = htonl(0x9166015c); // stw r11,$015c(r6) |
| 1126 |
*lp++ = htonl(0x91860164); // stw r12,$0164(r6) |
| 1127 |
*lp++ = htonl(0x91a6016c); // stw r13,$016c(r6) |
| 1128 |
*lp++ = htonl(0x7da00026); // mfcr r13 |
| 1129 |
*lp++ = htonl(0x80e10660); // lwz r7,$0660(r1) |
| 1130 |
*lp++ = htonl(0x7d8802a6); // mflr r12 |
| 1131 |
*lp++ = htonl(0x50e74001); // rlwimi. r7,r7,8,$80000000 |
| 1132 |
*lp++ = htonl(0x814105f8); // lwz r10,0x05f8(r1) |
| 1133 |
*lp++ = htonl(0x7d4803a6); // mtlr r10 |
| 1134 |
*lp++ = htonl(0x7d8a6378); // mr r10,r12 |
| 1135 |
*lp++ = htonl(0x3d600002); // lis r11,0x0002 |
| 1136 |
*lp++ = htonl(0x616bf072); // ori r11,r11,0xf072 (MSR) |
| 1137 |
*lp++ = htonl(0x50e7deb4); // rlwimi r7,r7,27,$00000020 |
| 1138 |
*lp = htonl(0x4e800020); // blr |
| 1139 |
|
| 1140 |
// Extra routine for FE0A opcode (QuickDraw 3D needs this) |
| 1141 |
lp = (uint32 *)(ROM_BASE + 0x36fc00); |
| 1142 |
*lp++ = htonl(0x7c2903a6); // mtctr r1 |
| 1143 |
#if EMULATED_PPC |
| 1144 |
*lp++ = htonl(NativeOpcode(NATIVE_DISABLE_INTERRUPT)); |
| 1145 |
#else |
| 1146 |
*lp++ = htonl(0x80200000 + XLM_IRQ_NEST); // lwz r1,XLM_IRQ_NEST |
| 1147 |
*lp++ = htonl(0x38210001); // addi r1,r1,1 |
| 1148 |
*lp++ = htonl(0x90200000 + XLM_IRQ_NEST); // stw r1,XLM_IRQ_NEST |
| 1149 |
#endif |
| 1150 |
*lp++ = htonl(0x80200000 + XLM_KERNEL_DATA);// lwz r1,XLM_KERNEL_DATA |
| 1151 |
*lp++ = htonl(0x90c10018); // stw r6,0x18(r1) |
| 1152 |
*lp++ = htonl(0x7cc902a6); // mfctr r6 |
| 1153 |
*lp++ = htonl(0x90c10004); // stw r6,$0004(r1) |
| 1154 |
*lp++ = htonl(0x80c1065c); // lwz r6,$065c(r1) |
| 1155 |
*lp++ = htonl(0x90e6013c); // stw r7,$013c(r6) |
| 1156 |
*lp++ = htonl(0x91060144); // stw r8,$0144(r6) |
| 1157 |
*lp++ = htonl(0x9126014c); // stw r9,$014c(r6) |
| 1158 |
*lp++ = htonl(0x91460154); // stw r10,$0154(r6) |
| 1159 |
*lp++ = htonl(0x9166015c); // stw r11,$015c(r6) |
| 1160 |
*lp++ = htonl(0x91860164); // stw r12,$0164(r6) |
| 1161 |
*lp++ = htonl(0x91a6016c); // stw r13,$016c(r6) |
| 1162 |
*lp++ = htonl(0x7da00026); // mfcr r13 |
| 1163 |
*lp++ = htonl(0x80e10660); // lwz r7,$0660(r1) |
| 1164 |
*lp++ = htonl(0x7d8802a6); // mflr r12 |
| 1165 |
*lp++ = htonl(0x50e74001); // rlwimi. r7,r7,8,$80000000 |
| 1166 |
*lp++ = htonl(0x814105fc); // lwz r10,0x05fc(r1) |
| 1167 |
*lp++ = htonl(0x7d4803a6); // mtlr r10 |
| 1168 |
*lp++ = htonl(0x7d8a6378); // mr r10,r12 |
| 1169 |
*lp++ = htonl(0x3d600002); // lis r11,0x0002 |
| 1170 |
*lp++ = htonl(0x616bf072); // ori r11,r11,0xf072 (MSR) |
| 1171 |
*lp++ = htonl(0x50e7deb4); // rlwimi r7,r7,27,$00000020 |
| 1172 |
*lp = htonl(0x4e800020); // blr |
| 1173 |
|
| 1174 |
// Patch DR emulator to jump to right address when an interrupt occurs |
| 1175 |
lp = (uint32 *)(ROM_BASE + 0x370000); |
| 1176 |
while (lp < (uint32 *)(ROM_BASE + 0x380000)) { |
| 1177 |
if (ntohl(*lp) == 0x4ca80020) // bclr 5,8 |
| 1178 |
goto dr_found; |
| 1179 |
lp++; |
| 1180 |
} |
| 1181 |
D(bug("DR emulator patch location not found\n")); |
| 1182 |
return false; |
| 1183 |
dr_found: |
| 1184 |
lp++; |
| 1185 |
*lp = htonl(0x48000000 + 0xf000 - (((uint32)lp - ROM_BASE) & 0xffff)); // b DR_CACHE_BASE+0x1f000 |
| 1186 |
lp = (uint32 *)(ROM_BASE + 0x37f000); |
| 1187 |
*lp++ = htonl(0x3c000000 + ((ROM_BASE + 0x46d0a4) >> 16)); // lis r0,xxx |
| 1188 |
*lp++ = htonl(0x60000000 + ((ROM_BASE + 0x46d0a4) & 0xffff)); // ori r0,r0,xxx |
| 1189 |
*lp++ = htonl(0x7c0903a6); // mtctr r0 |
| 1190 |
*lp = htonl(POWERPC_BCTR); // bctr |
| 1191 |
return true; |
| 1192 |
} |
| 1193 |
|
| 1194 |
|
| 1195 |
/* |
| 1196 |
* Nanokernel patches |
| 1197 |
*/ |
| 1198 |
|
| 1199 |
static bool patch_nanokernel(void) |
| 1200 |
{ |
| 1201 |
uint32 *lp; |
| 1202 |
|
| 1203 |
// Patch Mixed Mode trap |
| 1204 |
lp = (uint32 *)(ROM_BASE + 0x313c90); // Don't translate virtual->physical |
| 1205 |
while (ntohl(*lp) != 0x3ba10320) lp++; |
| 1206 |
lp++; |
| 1207 |
*lp++ = htonl(0x7f7fdb78); // mr r31,r27 |
| 1208 |
lp++; |
| 1209 |
*lp = htonl(POWERPC_NOP); |
| 1210 |
|
| 1211 |
lp = (uint32 *)(ROM_BASE + 0x313c3c); // Don't activate PPC exception table |
| 1212 |
while (ntohl(*lp) != 0x39010420) lp++; |
| 1213 |
*lp++ = htonl(0x39000000 + MODE_NATIVE); // li r8,MODE_NATIVE |
| 1214 |
*lp = htonl(0x91000000 + XLM_RUN_MODE); // stw r8,XLM_RUN_MODE |
| 1215 |
|
| 1216 |
lp = (uint32 *)(ROM_BASE + 0x312e88); // Don't modify MSR to turn on FPU |
| 1217 |
while (ntohl(*lp) != 0x556b04e2) lp++; |
| 1218 |
lp -= 4; |
| 1219 |
*lp++ = htonl(POWERPC_NOP); |
| 1220 |
lp++; |
| 1221 |
*lp++ = htonl(POWERPC_NOP); |
| 1222 |
lp++; |
| 1223 |
*lp = htonl(POWERPC_NOP); |
| 1224 |
|
| 1225 |
lp = (uint32 *)(ROM_BASE + 0x312b3c); // Always save FPU state |
| 1226 |
while (ntohl(*lp) != 0x81010668) lp++; |
| 1227 |
lp--; |
| 1228 |
*lp = htonl(0x48000000 | (ntohl(*lp) & 0xffff)); // bl 0x00312e88 |
| 1229 |
|
| 1230 |
lp = (uint32 *)(ROM_BASE + 0x312b44); // Don't read DEC |
| 1231 |
while (ntohl(*lp) != 0x7ff602a6) lp++; |
| 1232 |
*lp = htonl(0x3be00000); // li r31,0 |
| 1233 |
|
| 1234 |
lp = (uint32 *)(ROM_BASE + 0x312b50); // Don't write DEC |
| 1235 |
while (ntohl(*lp) != 0x7d1603a6) lp++; |
| 1236 |
#if 1 |
| 1237 |
*lp++ = htonl(POWERPC_NOP); |
| 1238 |
*lp = htonl(POWERPC_NOP); |
| 1239 |
#else |
| 1240 |
*lp++ = htonl(0x39000040); // li r8,0x40 |
| 1241 |
*lp = htonl(0x990600e4); // stb r8,0xe4(r6) |
| 1242 |
#endif |
| 1243 |
|
| 1244 |
lp = (uint32 *)(ROM_BASE + 0x312b9c); // Always restore FPU state |
| 1245 |
while (ntohl(*lp) != 0x7c00092d) lp++; |
| 1246 |
lp--; |
| 1247 |
*lp = htonl(0x48000000 | (ntohl(*lp) & 0xffff)); // bl 0x00312ddc |
| 1248 |
|
| 1249 |
lp = (uint32 *)(ROM_BASE + 0x312a68); // Don't activate 68k exception table |
| 1250 |
while (ntohl(*lp) != 0x39010360) lp++; |
| 1251 |
*lp++ = htonl(0x39000000 + MODE_68K); // li r8,MODE_68K |
| 1252 |
*lp = htonl(0x91000000 + XLM_RUN_MODE); // stw r8,XLM_RUN_MODE |
| 1253 |
|
| 1254 |
// Patch 68k emulator trap routine |
| 1255 |
lp = (uint32 *)(ROM_BASE + 0x312994); // Always restore FPU state |
| 1256 |
while (ntohl(*lp) != 0x39260040) lp++; |
| 1257 |
lp--; |
| 1258 |
*lp = htonl(0x48000000 | (ntohl(*lp) & 0xffff)); // bl 0x00312dd4 |
| 1259 |
|
| 1260 |
lp = (uint32 *)(ROM_BASE + 0x312dd8); // Don't modify MSR to turn on FPU |
| 1261 |
while (ntohl(*lp) != 0x810600e4) lp++; |
| 1262 |
lp--; |
| 1263 |
*lp++ = htonl(POWERPC_NOP); |
| 1264 |
lp += 2; |
| 1265 |
*lp++ = htonl(POWERPC_NOP); |
| 1266 |
lp++; |
| 1267 |
*lp++ = htonl(POWERPC_NOP); |
| 1268 |
*lp++ = htonl(POWERPC_NOP); |
| 1269 |
*lp = htonl(POWERPC_NOP); |
| 1270 |
|
| 1271 |
// Patch trap return routine |
| 1272 |
lp = (uint32 *)(ROM_BASE + 0x312c20); |
| 1273 |
while (ntohl(*lp) != 0x7d5a03a6) lp++; |
| 1274 |
*lp++ = htonl(0x7d4903a6); // mtctr r10 |
| 1275 |
*lp++ = htonl(0x7daff120); // mtcr r13 |
| 1276 |
*lp = htonl(0x48000000 + 0x8000 - (((uint32)lp - ROM_BASE) & 0xffff)); // b ROM_BASE+0x318000 |
| 1277 |
uint32 xlp = ((uint32)(lp+1) - ROM_BASE) & 0xffff; |
| 1278 |
|
| 1279 |
lp = (uint32 *)(ROM_BASE + 0x312c50); // Replace rfi |
| 1280 |
while (ntohl(*lp) != 0x4c000064) lp++; |
| 1281 |
*lp = htonl(POWERPC_BCTR); |
| 1282 |
|
| 1283 |
lp = (uint32 *)(ROM_BASE + 0x318000); |
| 1284 |
#if EMULATED_PPC |
| 1285 |
*lp++ = htonl(NativeOpcode(NATIVE_ENABLE_INTERRUPT)); |
| 1286 |
*lp = htonl(0x48000000 + ((xlp - 0x8004) & 0x03fffffc)); // b ROM_BASE+0x312c2c |
| 1287 |
#else |
| 1288 |
*lp++ = htonl(0x81400000 + XLM_IRQ_NEST); // lwz r10,XLM_IRQ_NEST |
| 1289 |
*lp++ = htonl(0x394affff); // subi r10,r10,1 |
| 1290 |
*lp++ = htonl(0x91400000 + XLM_IRQ_NEST); // stw r10,XLM_IRQ_NEST |
| 1291 |
*lp = htonl(0x48000000 + ((xlp - 0x800c) & 0x03fffffc)); // b ROM_BASE+0x312c2c |
| 1292 |
#endif |
| 1293 |
|
| 1294 |
/* |
| 1295 |
// Disable FE0A/FE06 opcodes |
| 1296 |
lp = (uint32 *)(ROM_BASE + 0x3144ac); |
| 1297 |
*lp++ = htonl(POWERPC_NOP); |
| 1298 |
*lp += 8; |
| 1299 |
*/ |
| 1300 |
return true; |
| 1301 |
} |
| 1302 |
|
| 1303 |
|
| 1304 |
/* |
| 1305 |
* 68k boot routine patches |
| 1306 |
*/ |
| 1307 |
|
| 1308 |
static bool patch_68k(void) |
| 1309 |
{ |
| 1310 |
uint32 *lp; |
| 1311 |
uint16 *wp; |
| 1312 |
uint8 *bp; |
| 1313 |
uint32 base; |
| 1314 |
|
| 1315 |
// Remove 68k RESET instruction |
| 1316 |
static const uint8 reset_dat[] = {0x4e, 0x70}; |
| 1317 |
if ((base = find_rom_data(0xc8, 0x120, reset_dat, sizeof(reset_dat))) == 0) return false; |
| 1318 |
D(bug("reset %08lx\n", base)); |
| 1319 |
wp = (uint16 *)(ROM_BASE + base); |
| 1320 |
*wp = htons(M68K_NOP); |
| 1321 |
|
| 1322 |
// Fake reading PowerMac ID (via Universal) |
| 1323 |
static const uint8 powermac_id_dat[] = {0x45, 0xf9, 0x5f, 0xff, 0xff, 0xfc, 0x20, 0x12, 0x72, 0x00}; |
| 1324 |
if ((base = find_rom_data(0xe000, 0x15000, powermac_id_dat, sizeof(powermac_id_dat))) == 0) return false; |
| 1325 |
D(bug("powermac_id %08lx\n", base)); |
| 1326 |
wp = (uint16 *)(ROM_BASE + base); |
| 1327 |
*wp++ = htons(0x203c); // move.l #id,d0 |
| 1328 |
*wp++ = htons(0); |
| 1329 |
// if (ROMType == ROMTYPE_NEWWORLD) |
| 1330 |
// *wp++ = htons(0x3035); // (PowerMac 9500 ID) |
| 1331 |
// else |
| 1332 |
*wp++ = htons(0x3020); // (PowerMac 9500 ID) |
| 1333 |
*wp++ = htons(0xb040); // cmp.w d0,d0 |
| 1334 |
*wp = htons(0x4ed6); // jmp (a6) |
| 1335 |
|
| 1336 |
// Patch UniversalInfo |
| 1337 |
if (ROMType == ROMTYPE_NEWWORLD) { |
| 1338 |
static const uint8 univ_info_dat[] = {0x3f, 0xff, 0x04, 0x00}; |
| 1339 |
if ((base = find_rom_data(0x14000, 0x18000, univ_info_dat, sizeof(univ_info_dat))) == 0) return false; |
| 1340 |
D(bug("universal_info %08lx\n", base)); |
| 1341 |
lp = (uint32 *)(ROM_BASE + base - 0x14); |
| 1342 |
lp[0x00 >> 2] = htonl(ADDR_MAP_PATCH_SPACE - (base - 0x14)); |
| 1343 |
lp[0x10 >> 2] = htonl(0xcc003d11); // Make it like the PowerMac 9500 UniversalInfo |
| 1344 |
lp[0x14 >> 2] = htonl(0x3fff0401); |
| 1345 |
lp[0x18 >> 2] = htonl(0x0300001c); |
| 1346 |
lp[0x1c >> 2] = htonl(0x000108c4); |
| 1347 |
lp[0x24 >> 2] = htonl(0xc301bf26); |
| 1348 |
lp[0x28 >> 2] = htonl(0x00000861); |
| 1349 |
lp[0x58 >> 2] = htonl(0x30200000); |
| 1350 |
lp[0x60 >> 2] = htonl(0x0000003d); |
| 1351 |
} else if (ROMType == ROMTYPE_ZANZIBAR) { |
| 1352 |
base = 0x12b70; |
| 1353 |
lp = (uint32 *)(ROM_BASE + base - 0x14); |
| 1354 |
lp[0x00 >> 2] = htonl(ADDR_MAP_PATCH_SPACE - (base - 0x14)); |
| 1355 |
lp[0x10 >> 2] = htonl(0xcc003d11); // Make it like the PowerMac 9500 UniversalInfo |
| 1356 |
lp[0x14 >> 2] = htonl(0x3fff0401); |
| 1357 |
lp[0x18 >> 2] = htonl(0x0300001c); |
| 1358 |
lp[0x1c >> 2] = htonl(0x000108c4); |
| 1359 |
lp[0x24 >> 2] = htonl(0xc301bf26); |
| 1360 |
lp[0x28 >> 2] = htonl(0x00000861); |
| 1361 |
lp[0x58 >> 2] = htonl(0x30200000); |
| 1362 |
lp[0x60 >> 2] = htonl(0x0000003d); |
| 1363 |
} else if (ROMType == ROMTYPE_GOSSAMER) { |
| 1364 |
base = 0x12d20; |
| 1365 |
lp = (uint32 *)(ROM_BASE + base - 0x14); |
| 1366 |
lp[0x00 >> 2] = htonl(ADDR_MAP_PATCH_SPACE - (base - 0x14)); |
| 1367 |
lp[0x10 >> 2] = htonl(0xcc003d11); // Make it like the PowerMac 9500 UniversalInfo |
| 1368 |
lp[0x14 >> 2] = htonl(0x3fff0401); |
| 1369 |
lp[0x18 >> 2] = htonl(0x0300001c); |
| 1370 |
lp[0x1c >> 2] = htonl(0x000108c4); |
| 1371 |
lp[0x24 >> 2] = htonl(0xc301bf26); |
| 1372 |
lp[0x28 >> 2] = htonl(0x00000861); |
| 1373 |
lp[0x58 >> 2] = htonl(0x30410000); |
| 1374 |
lp[0x60 >> 2] = htonl(0x0000003d); |
| 1375 |
} |
| 1376 |
|
| 1377 |
// Construct AddrMap for NewWorld ROM |
| 1378 |
if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GOSSAMER) { |
| 1379 |
lp = (uint32 *)(ROM_BASE + ADDR_MAP_PATCH_SPACE); |
| 1380 |
memset(lp - 10, 0, 0x128); |
| 1381 |
lp[-10] = htonl(0x0300001c); |
| 1382 |
lp[-9] = htonl(0x000108c4); |
| 1383 |
lp[-4] = htonl(0x00300000); |
| 1384 |
lp[-2] = htonl(0x11010000); |
| 1385 |
lp[-1] = htonl(0xf8000000); |
| 1386 |
lp[0] = htonl(0xffc00000); |
| 1387 |
lp[2] = htonl(0xf3016000); |
| 1388 |
lp[3] = htonl(0xf3012000); |
| 1389 |
lp[4] = htonl(0xf3012000); |
| 1390 |
lp[24] = htonl(0xf3018000); |
| 1391 |
lp[25] = htonl(0xf3010000); |
| 1392 |
lp[34] = htonl(0xf3011000); |
| 1393 |
lp[38] = htonl(0xf3015000); |
| 1394 |
lp[39] = htonl(0xf3014000); |
| 1395 |
lp[43] = htonl(0xf3000000); |
| 1396 |
lp[48] = htonl(0xf8000000); |
| 1397 |
} |
| 1398 |
|
| 1399 |
// Don't initialize VIA (via Universal) |
| 1400 |
static const uint8 via_init_dat[] = {0x08, 0x00, 0x00, 0x02, 0x67, 0x00, 0x00, 0x2c, 0x24, 0x68, 0x00, 0x08}; |
| 1401 |
if ((base = find_rom_data(0xe000, 0x15000, via_init_dat, sizeof(via_init_dat))) == 0) return false; |
| 1402 |
D(bug("via_init %08lx\n", base)); |
| 1403 |
wp = (uint16 *)(ROM_BASE + base + 4); |
| 1404 |
*wp = htons(0x6000); // bra |
| 1405 |
|
| 1406 |
static const uint8 via_init2_dat[] = {0x24, 0x68, 0x00, 0x08, 0x00, 0x12, 0x00, 0x30, 0x4e, 0x71}; |
| 1407 |
if ((base = find_rom_data(0xa000, 0x10000, via_init2_dat, sizeof(via_init2_dat))) == 0) return false; |
| 1408 |
D(bug("via_init2 %08lx\n", base)); |
| 1409 |
wp = (uint16 *)(ROM_BASE + base); |
| 1410 |
*wp = htons(0x4ed6); // jmp (a6) |
| 1411 |
|
| 1412 |
static const uint8 via_init3_dat[] = {0x22, 0x68, 0x00, 0x08, 0x28, 0x3c, 0x20, 0x00, 0x01, 0x00}; |
| 1413 |
if ((base = find_rom_data(0xa000, 0x10000, via_init3_dat, sizeof(via_init3_dat))) == 0) return false; |
| 1414 |
D(bug("via_init3 %08lx\n", base)); |
| 1415 |
wp = (uint16 *)(ROM_BASE + base); |
| 1416 |
*wp = htons(0x4ed6); // jmp (a6) |
| 1417 |
|
| 1418 |
// Don't RunDiags, get BootGlobs pointer directly |
| 1419 |
if (ROMType == ROMTYPE_NEWWORLD) { |
| 1420 |
static const uint8 run_diags_dat[] = {0x60, 0xff, 0x00, 0x0c}; |
| 1421 |
if ((base = find_rom_data(0x110, 0x128, run_diags_dat, sizeof(run_diags_dat))) == 0) return false; |
| 1422 |
D(bug("run_diags %08lx\n", base)); |
| 1423 |
wp = (uint16 *)(ROM_BASE + base); |
| 1424 |
*wp++ = htons(0x4df9); // lea xxx,a6 |
| 1425 |
*wp++ = htons((RAMBase + RAMSize - 0x1c) >> 16); |
| 1426 |
*wp = htons((RAMBase + RAMSize - 0x1c) & 0xffff); |
| 1427 |
} else { |
| 1428 |
static const uint8 run_diags_dat[] = {0x74, 0x00, 0x2f, 0x0e}; |
| 1429 |
if ((base = find_rom_data(0xd0, 0xf0, run_diags_dat, sizeof(run_diags_dat))) == 0) return false; |
| 1430 |
D(bug("run_diags %08lx\n", base)); |
| 1431 |
wp = (uint16 *)(ROM_BASE + base - 6); |
| 1432 |
*wp++ = htons(0x4df9); // lea xxx,a6 |
| 1433 |
*wp++ = htons((RAMBase + RAMSize - 0x1c) >> 16); |
| 1434 |
*wp = htons((RAMBase + RAMSize - 0x1c) & 0xffff); |
| 1435 |
} |
| 1436 |
|
| 1437 |
// Replace NVRAM routines |
| 1438 |
static const uint8 nvram1_dat[] = {0x48, 0xe7, 0x01, 0x0e, 0x24, 0x68, 0x00, 0x08, 0x08, 0x83, 0x00, 0x1f}; |
| 1439 |
if ((base = find_rom_data(0x7000, 0xc000, nvram1_dat, sizeof(nvram1_dat))) == 0) return false; |
| 1440 |
D(bug("nvram1 %08lx\n", base)); |
| 1441 |
wp = (uint16 *)(ROM_BASE + base); |
| 1442 |
*wp++ = htons(M68K_EMUL_OP_XPRAM1); |
| 1443 |
*wp = htons(M68K_RTS); |
| 1444 |
|
| 1445 |
if (ROMType == ROMTYPE_NEWWORLD) { |
| 1446 |
static const uint8 nvram2_dat[] = {0x48, 0xe7, 0x1c, 0xe0, 0x4f, 0xef, 0xff, 0xb4}; |
| 1447 |
if ((base = find_rom_data(0xa000, 0xd000, nvram2_dat, sizeof(nvram2_dat))) == 0) return false; |
| 1448 |
D(bug("nvram2 %08lx\n", base)); |
| 1449 |
wp = (uint16 *)(ROM_BASE + base); |
| 1450 |
*wp++ = htons(M68K_EMUL_OP_XPRAM2); |
| 1451 |
*wp = htons(0x4ed3); // jmp (a3) |
| 1452 |
|
| 1453 |
static const uint8 nvram3_dat[] = {0x48, 0xe7, 0xdc, 0xe0, 0x4f, 0xef, 0xff, 0xb4}; |
| 1454 |
if ((base = find_rom_data(0xa000, 0xd000, nvram3_dat, sizeof(nvram3_dat))) == 0) return false; |
| 1455 |
D(bug("nvram3 %08lx\n", base)); |
| 1456 |
wp = (uint16 *)(ROM_BASE + base); |
| 1457 |
*wp++ = htons(M68K_EMUL_OP_XPRAM3); |
| 1458 |
*wp = htons(0x4ed3); // jmp (a3) |
| 1459 |
|
| 1460 |
static const uint8 nvram4_dat[] = {0x4e, 0x56, 0xff, 0xa8, 0x48, 0xe7, 0x1f, 0x38, 0x16, 0x2e, 0x00, 0x13}; |
| 1461 |
if ((base = find_rom_data(0xa000, 0xd000, nvram4_dat, sizeof(nvram4_dat))) == 0) return false; |
| 1462 |
D(bug("nvram4 %08lx\n", base)); |
| 1463 |
wp = (uint16 *)(ROM_BASE + base + 16); |
| 1464 |
*wp++ = htons(0x1a2e); // move.b ($000f,a6),d5 |
| 1465 |
*wp++ = htons(0x000f); |
| 1466 |
*wp++ = htons(M68K_EMUL_OP_NVRAM3); |
| 1467 |
*wp++ = htons(0x4cee); // movem.l ($ff88,a6),d3-d7/a2-a4 |
| 1468 |
*wp++ = htons(0x1cf8); |
| 1469 |
*wp++ = htons(0xff88); |
| 1470 |
*wp++ = htons(0x4e5e); // unlk a6 |
| 1471 |
*wp = htons(M68K_RTS); |
| 1472 |
|
| 1473 |
static const uint8 nvram5_dat[] = {0x0c, 0x80, 0x03, 0x00, 0x00, 0x00, 0x66, 0x0a, 0x70, 0x00, 0x21, 0xf8, 0x02, 0x0c, 0x01, 0xe4}; |
| 1474 |
if ((base = find_rom_data(0xa000, 0xd000, nvram5_dat, sizeof(nvram5_dat))) == 0) return false; |
| 1475 |
D(bug("nvram5 %08lx\n", base)); |
| 1476 |
wp = (uint16 *)(ROM_BASE + base + 6); |
| 1477 |
*wp = htons(M68K_NOP); |
| 1478 |
|
| 1479 |
static const uint8 nvram6_dat[] = {0x2f, 0x0a, 0x24, 0x48, 0x4f, 0xef, 0xff, 0xa0, 0x20, 0x0f}; |
| 1480 |
if ((base = find_rom_data(0x9000, 0xb000, nvram6_dat, sizeof(nvram6_dat))) == 0) return false; |
| 1481 |
D(bug("nvram6 %08lx\n", base)); |
| 1482 |
wp = (uint16 *)(ROM_BASE + base); |
| 1483 |
*wp++ = htons(0x7000); // moveq #0,d0 |
| 1484 |
*wp++ = htons(0x2080); // move.l d0,(a0) |
| 1485 |
*wp++ = htons(0x4228); // clr.b 4(a0) |
| 1486 |
*wp++ = htons(0x0004); |
| 1487 |
*wp = htons(M68K_RTS); |
| 1488 |
|
| 1489 |
static const uint8 nvram7_dat[] = {0x42, 0x2a, 0x00, 0x04, 0x4f, 0xef, 0x00, 0x60, 0x24, 0x5f, 0x4e, 0x75, 0x4f, 0xef, 0xff, 0xa0, 0x20, 0x0f}; |
| 1490 |
base = find_rom_data(0x9000, 0xb000, nvram7_dat, sizeof(nvram7_dat)); |
| 1491 |
if (base) { |
| 1492 |
D(bug("nvram7 %08lx\n", base)); |
| 1493 |
wp = (uint16 *)(ROM_BASE + base + 12); |
| 1494 |
*wp = htons(M68K_RTS); |
| 1495 |
} |
| 1496 |
} else { |
| 1497 |
static const uint8 nvram2_dat[] = {0x4e, 0xd6, 0x06, 0x41, 0x13, 0x00}; |
| 1498 |
if ((base = find_rom_data(0x7000, 0xb000, nvram2_dat, sizeof(nvram2_dat))) == 0) return false; |
| 1499 |
D(bug("nvram2 %08lx\n", base)); |
| 1500 |
wp = (uint16 *)(ROM_BASE + base + 2); |
| 1501 |
*wp++ = htons(M68K_EMUL_OP_XPRAM2); |
| 1502 |
*wp = htons(0x4ed3); // jmp (a3) |
| 1503 |
|
| 1504 |
static const uint8 nvram3_dat[] = {0x4e, 0xd3, 0x06, 0x41, 0x13, 0x00}; |
| 1505 |
if ((base = find_rom_data(0x7000, 0xb000, nvram3_dat, sizeof(nvram3_dat))) == 0) return false; |
| 1506 |
D(bug("nvram3 %08lx\n", base)); |
| 1507 |
wp = (uint16 *)(ROM_BASE + base + 2); |
| 1508 |
*wp++ = htons(M68K_EMUL_OP_XPRAM3); |
| 1509 |
*wp = htons(0x4ed3); // jmp (a3) |
| 1510 |
|
| 1511 |
static const uint32 nvram4_loc[] = {0x582f0, 0xa0a0, 0x7e50, 0xa1d0, 0x538d0, 0}; |
| 1512 |
wp = (uint16 *)(ROM_BASE + nvram4_loc[ROMType]); |
| 1513 |
*wp++ = htons(0x202f); // move.l 4(sp),d0 |
| 1514 |
*wp++ = htons(0x0004); |
| 1515 |
*wp++ = htons(M68K_EMUL_OP_NVRAM1); |
| 1516 |
if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GAZELLE) |
| 1517 |
*wp = htons(M68K_RTS); |
| 1518 |
else { |
| 1519 |
*wp++ = htons(0x1f40); // move.b d0,8(sp) |
| 1520 |
*wp++ = htons(0x0008); |
| 1521 |
*wp++ = htons(0x4e74); // rtd #4 |
| 1522 |
*wp = htons(0x0004); |
| 1523 |
} |
| 1524 |
|
| 1525 |
static const uint32 nvram5_loc[] = {0x58460, 0xa0f0, 0x7f40, 0xa220, 0x53a20, 0}; |
| 1526 |
wp = (uint16 *)(ROM_BASE + nvram5_loc[ROMType]); |
| 1527 |
if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GAZELLE) { |
| 1528 |
*wp++ = htons(0x202f); // move.l 4(sp),d0 |
| 1529 |
*wp++ = htons(0x0004); |
| 1530 |
*wp++ = htons(0x122f); // move.b 11(sp),d1 |
| 1531 |
*wp++ = htons(0x000b); |
| 1532 |
*wp++ = htons(M68K_EMUL_OP_NVRAM2); |
| 1533 |
*wp = htons(M68K_RTS); |
| 1534 |
} else { |
| 1535 |
*wp++ = htons(0x202f); // move.l 6(sp),d0 |
| 1536 |
*wp++ = htons(0x0006); |
| 1537 |
*wp++ = htons(0x122f); // move.b 4(sp),d1 |
| 1538 |
*wp++ = htons(0x0004); |
| 1539 |
*wp++ = htons(M68K_EMUL_OP_NVRAM2); |
| 1540 |
*wp++ = htons(0x4e74); // rtd #6 |
| 1541 |
*wp = htons(0x0006); |
| 1542 |
} |
| 1543 |
} |
| 1544 |
|
| 1545 |
// Fix MemTop/BootGlobs during system startup |
| 1546 |
static const uint8 mem_top_dat[] = {0x2c, 0x6c, 0xff, 0xec, 0x2a, 0x4c, 0xdb, 0xec, 0xff, 0xf4}; |
| 1547 |
if ((base = find_rom_data(0x120, 0x180, mem_top_dat, sizeof(mem_top_dat))) == 0) return false; |
| 1548 |
D(bug("mem_top %08lx\n", base)); |
| 1549 |
wp = (uint16 *)(ROM_BASE + base); |
| 1550 |
*wp++ = htons(M68K_EMUL_OP_FIX_MEMTOP); |
| 1551 |
*wp = htons(M68K_NOP); |
| 1552 |
|
| 1553 |
// Don't initialize SCC (via 0x1ac) |
| 1554 |
static const uint8 scc_init_dat[] = {0x48, 0xe7, 0x38, 0xfe}; |
| 1555 |
if ((base = find_rom_data(0x190, 0x1f0, scc_init_dat, sizeof(scc_init_dat))) == 0) return false; |
| 1556 |
D(bug("scc_init %08lx\n", base)); |
| 1557 |
wp = (uint16 *)(ROM_BASE + base - 2); |
| 1558 |
wp = (uint16 *)(ROM_BASE + ntohs(*wp) + base - 2); |
| 1559 |
*wp++ = htons(M68K_EMUL_OP_RESET); |
| 1560 |
*wp = htons(M68K_RTS); |
| 1561 |
|
| 1562 |
// Don't EnableExtCache (via 0x1f6) and don't DisableIntSources(via 0x1fc) |
| 1563 |
static const uint8 ext_cache_dat[] = {0x4e, 0x7b, 0x00, 0x02}; |
| 1564 |
if ((base = find_rom_data(0x1d0, 0x230, ext_cache_dat, sizeof(ext_cache_dat))) == 0) return false; |
| 1565 |
D(bug("ext_cache %08lx\n", base)); |
| 1566 |
lp = (uint32 *)(ROM_BASE + base + 6); |
| 1567 |
wp = (uint16 *)(ROM_BASE + ntohl(*lp) + base + 6); |
| 1568 |
*wp = htons(M68K_RTS); |
| 1569 |
lp = (uint32 *)(ROM_BASE + base + 12); |
| 1570 |
wp = (uint16 *)(ROM_BASE + ntohl(*lp) + base + 12); |
| 1571 |
*wp = htons(M68K_RTS); |
| 1572 |
|
| 1573 |
// Fake CPU speed test (SetupTimeK) |
| 1574 |
static const uint8 timek_dat[] = {0x0c, 0x38, 0x00, 0x04, 0x01, 0x2f, 0x6d, 0x3c}; |
| 1575 |
if ((base = find_rom_data(0x400, 0x500, timek_dat, sizeof(timek_dat))) == 0) return false; |
| 1576 |
D(bug("timek %08lx\n", base)); |
| 1577 |
wp = (uint16 *)(ROM_BASE + base); |
| 1578 |
*wp++ = htons(0x31fc); // move.w #xxx,TimeDBRA |
| 1579 |
*wp++ = htons(100); |
| 1580 |
*wp++ = htons(0x0d00); |
| 1581 |
*wp++ = htons(0x31fc); // move.w #xxx,TimeSCCDBRA |
| 1582 |
*wp++ = htons(100); |
| 1583 |
*wp++ = htons(0x0d02); |
| 1584 |
*wp++ = htons(0x31fc); // move.w #xxx,TimeSCSIDBRA |
| 1585 |
*wp++ = htons(100); |
| 1586 |
*wp++ = htons(0x0b24); |
| 1587 |
*wp++ = htons(0x31fc); // move.w #xxx,TimeRAMDBRA |
| 1588 |
*wp++ = htons(100); |
| 1589 |
*wp++ = htons(0x0cea); |
| 1590 |
*wp = htons(M68K_RTS); |
| 1591 |
|
| 1592 |
// Relocate jump tables ($2000..) |
| 1593 |
static const uint8 jump_tab_dat[] = {0x41, 0xfa, 0x00, 0x0e, 0x21, 0xc8, 0x20, 0x10, 0x4e, 0x75}; |
| 1594 |
if ((base = find_rom_data(0x3000, 0x6000, jump_tab_dat, sizeof(jump_tab_dat))) == 0) return false; |
| 1595 |
D(bug("jump_tab %08lx\n", base)); |
| 1596 |
lp = (uint32 *)(ROM_BASE + base + 16); |
| 1597 |
for (;;) { |
| 1598 |
D(bug(" %08lx\n", (uint32)lp - ROM_BASE)); |
| 1599 |
while ((ntohl(*lp) & 0xff000000) == 0xff000000) { |
| 1600 |
*lp = htonl((ntohl(*lp) & (ROM_SIZE-1)) + ROM_BASE); |
| 1601 |
lp++; |
| 1602 |
} |
| 1603 |
while (!ntohl(*lp)) lp++; |
| 1604 |
if (ntohl(*lp) != 0x41fa000e) |
| 1605 |
break; |
| 1606 |
lp += 4; |
| 1607 |
} |
| 1608 |
|
| 1609 |
// Create SysZone at start of Mac RAM (SetSysAppZone, via 0x22a) |
| 1610 |
static const uint8 sys_zone_dat[] = {0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x40, 0x00}; |
| 1611 |
if ((base = find_rom_data(0x600, 0x900, sys_zone_dat, sizeof(sys_zone_dat))) == 0) return false; |
| 1612 |
D(bug("sys_zone %08lx\n", base)); |
| 1613 |
lp = (uint32 *)(ROM_BASE + base); |
| 1614 |
*lp++ = htonl(RAMBase ? RAMBase : 0x3000); |
| 1615 |
*lp = htonl(RAMBase ? RAMBase + 0x1800 : 0x4800); |
| 1616 |
|
| 1617 |
// Set boot stack at RAMBase+4MB and fix logical/physical RAM size (CompBootStack) |
| 1618 |
// The RAM size fix must be done after InitMemMgr! |
| 1619 |
static const uint8 boot_stack_dat[] = {0x08, 0x38, 0x00, 0x06, 0x24, 0x0b}; |
| 1620 |
if ((base = find_rom_data(0x580, 0x800, boot_stack_dat, sizeof(boot_stack_dat))) == 0) return false; |
| 1621 |
D(bug("boot_stack %08lx\n", base)); |
| 1622 |
wp = (uint16 *)(ROM_BASE + base); |
| 1623 |
*wp++ = htons(0x207c); // move.l #RAMBase+0x3ffffe,a0 |
| 1624 |
*wp++ = htons((RAMBase + 0x3ffffe) >> 16); |
| 1625 |
*wp++ = htons((RAMBase + 0x3ffffe) & 0xffff); |
| 1626 |
*wp++ = htons(M68K_EMUL_OP_FIX_MEMSIZE); |
| 1627 |
*wp = htons(M68K_RTS); |
| 1628 |
|
| 1629 |
// Get PowerPC page size (InitVMemMgr, via 0x240) |
| 1630 |
static const uint8 page_size_dat[] = {0x20, 0x30, 0x81, 0xf2, 0x5f, 0xff, 0xef, 0xd8, 0x00, 0x10}; |
| 1631 |
if ((base = find_rom_data(0xb000, 0x12000, page_size_dat, sizeof(page_size_dat))) == 0) return false; |
| 1632 |
D(bug("page_size %08lx\n", base)); |
| 1633 |
wp = (uint16 *)(ROM_BASE + base); |
| 1634 |
*wp++ = htons(0x203c); // move.l #$1000,d0 |
| 1635 |
*wp++ = htons(0); |
| 1636 |
*wp++ = htons(0x1000); |
| 1637 |
*wp++ = htons(M68K_NOP); |
| 1638 |
*wp = htons(M68K_NOP); |
| 1639 |
|
| 1640 |
// Gestalt PowerPC page size, RAM size (InitGestalt, via 0x25c) |
| 1641 |
static const uint8 page_size2_dat[] = {0x26, 0x79, 0x5f, 0xff, 0xef, 0xd8, 0x25, 0x6b, 0x00, 0x10, 0x00, 0x1e}; |
| 1642 |
if ((base = find_rom_data(0x50000, 0x70000, page_size2_dat, sizeof(page_size2_dat))) == 0) return false; |
| 1643 |
D(bug("page_size2 %08lx\n", base)); |
| 1644 |
wp = (uint16 *)(ROM_BASE + base); |
| 1645 |
*wp++ = htons(0x257c); // move.l #$1000,$1e(a2) |
| 1646 |
*wp++ = htons(0); |
| 1647 |
*wp++ = htons(0x1000); |
| 1648 |
*wp++ = htons(0x001e); |
| 1649 |
*wp++ = htons(0x157c); // move.b #PVR,$1d(a2) |
| 1650 |
*wp++ = htons(PVR >> 16); |
| 1651 |
*wp++ = htons(0x001d); |
| 1652 |
*wp++ = htons(0x263c); // move.l #RAMSize,d3 |
| 1653 |
*wp++ = htons(RAMSize >> 16); |
| 1654 |
*wp++ = htons(RAMSize & 0xffff); |
| 1655 |
*wp++ = htons(M68K_NOP); |
| 1656 |
*wp++ = htons(M68K_NOP); |
| 1657 |
*wp = htons(M68K_NOP); |
| 1658 |
if (ROMType == ROMTYPE_NEWWORLD) |
| 1659 |
wp = (uint16 *)(ROM_BASE + base + 0x4a); |
| 1660 |
else |
| 1661 |
wp = (uint16 *)(ROM_BASE + base + 0x28); |
| 1662 |
*wp++ = htons(M68K_NOP); |
| 1663 |
*wp = htons(M68K_NOP); |
| 1664 |
|
| 1665 |
// Gestalt CPU/bus clock speed (InitGestalt, via 0x25c) |
| 1666 |
if (ROMType == ROMTYPE_ZANZIBAR) { |
| 1667 |
wp = (uint16 *)(ROM_BASE + 0x5d87a); |
| 1668 |
*wp++ = htons(0x203c); // move.l #Hz,d0 |
| 1669 |
*wp++ = htons(BusClockSpeed >> 16); |
| 1670 |
*wp++ = htons(BusClockSpeed & 0xffff); |
| 1671 |
*wp++ = htons(M68K_NOP); |
| 1672 |
*wp = htons(M68K_NOP); |
| 1673 |
wp = (uint16 *)(ROM_BASE + 0x5d888); |
| 1674 |
*wp++ = htons(0x203c); // move.l #Hz,d0 |
| 1675 |
*wp++ = htons(CPUClockSpeed >> 16); |
| 1676 |
*wp++ = htons(CPUClockSpeed & 0xffff); |
| 1677 |
*wp++ = htons(M68K_NOP); |
| 1678 |
*wp = htons(M68K_NOP); |
| 1679 |
} |
| 1680 |
|
| 1681 |
// Don't write to GC interrupt mask register (via 0x262) |
| 1682 |
if (ROMType != ROMTYPE_NEWWORLD) { |
| 1683 |
static const uint8 gc_mask_dat[] = {0x83, 0xa8, 0x00, 0x24, 0x4e, 0x71}; |
| 1684 |
if ((base = find_rom_data(0x13000, 0x20000, gc_mask_dat, sizeof(gc_mask_dat))) == 0) return false; |
| 1685 |
D(bug("gc_mask %08lx\n", base)); |
| 1686 |
wp = (uint16 *)(ROM_BASE + base); |
| 1687 |
*wp++ = htons(M68K_NOP); |
| 1688 |
*wp = htons(M68K_NOP); |
| 1689 |
wp = (uint16 *)(ROM_BASE + base + 0x40); |
| 1690 |
*wp++ = htons(M68K_NOP); |
| 1691 |
*wp = htons(M68K_NOP); |
| 1692 |
wp = (uint16 *)(ROM_BASE + base + 0x78); |
| 1693 |
*wp++ = htons(M68K_NOP); |
| 1694 |
*wp = htons(M68K_NOP); |
| 1695 |
wp = (uint16 *)(ROM_BASE + base + 0x96); |
| 1696 |
*wp++ = htons(M68K_NOP); |
| 1697 |
*wp = htons(M68K_NOP); |
| 1698 |
|
| 1699 |
static const uint8 gc_mask2_dat[] = {0x02, 0xa8, 0x00, 0x00, 0x00, 0x80, 0x00, 0x24}; |
| 1700 |
if ((base = find_rom_data(0x13000, 0x20000, gc_mask2_dat, sizeof(gc_mask2_dat))) == 0) return false; |
| 1701 |
D(bug("gc_mask2 %08lx\n", base)); |
| 1702 |
wp = (uint16 *)(ROM_BASE + base); |
| 1703 |
if (ROMType == ROMTYPE_GOSSAMER) |
| 1704 |
*wp++ = htons(M68K_NOP); |
| 1705 |
for (int i=0; i<5; i++) { |
| 1706 |
*wp++ = htons(M68K_NOP); |
| 1707 |
*wp++ = htons(M68K_NOP); |
| 1708 |
*wp++ = htons(M68K_NOP); |
| 1709 |
*wp++ = htons(M68K_NOP); |
| 1710 |
wp += 2; |
| 1711 |
} |
| 1712 |
if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GOSSAMER) { |
| 1713 |
for (int i=0; i<6; i++) { |
| 1714 |
*wp++ = htons(M68K_NOP); |
| 1715 |
*wp++ = htons(M68K_NOP); |
| 1716 |
*wp++ = htons(M68K_NOP); |
| 1717 |
*wp++ = htons(M68K_NOP); |
| 1718 |
wp += 2; |
| 1719 |
} |
| 1720 |
} |
| 1721 |
} |
| 1722 |
|
| 1723 |
// Don't initialize Cuda (via 0x274) |
| 1724 |
static const uint8 cuda_init_dat[] = {0x08, 0xa9, 0x00, 0x04, 0x16, 0x00, 0x4e, 0x71, 0x13, 0x7c, 0x00, 0x84, 0x1c, 0x00, 0x4e, 0x71}; |
| 1725 |
if ((base = find_rom_data(0xa000, 0x12000, cuda_init_dat, sizeof(cuda_init_dat))) == 0) return false; |
| 1726 |
D(bug("cuda_init %08lx\n", base)); |
| 1727 |
wp = (uint16 *)(ROM_BASE + base); |
| 1728 |
*wp++ = htons(M68K_NOP); |
| 1729 |
*wp++ = htons(M68K_NOP); |
| 1730 |
*wp++ = htons(M68K_NOP); |
| 1731 |
*wp++ = htons(M68K_NOP); |
| 1732 |
*wp++ = htons(M68K_NOP); |
| 1733 |
*wp++ = htons(M68K_NOP); |
| 1734 |
*wp = htons(M68K_NOP); |
| 1735 |
|
| 1736 |
// Patch GetCPUSpeed (via 0x27a) (some ROMs have two of them) |
| 1737 |
static const uint8 cpu_speed_dat[] = {0x20, 0x30, 0x81, 0xf2, 0x5f, 0xff, 0xef, 0xd8, 0x00, 0x04, 0x4c, 0x7c}; |
| 1738 |
if ((base = find_rom_data(0x6000, 0xa000, cpu_speed_dat, sizeof(cpu_speed_dat))) == 0) return false; |
| 1739 |
D(bug("cpu_speed %08lx\n", base)); |
| 1740 |
wp = (uint16 *)(ROM_BASE + base); |
| 1741 |
*wp++ = htons(0x203c); // move.l #(MHz<<16)|MHz,d0 |
| 1742 |
*wp++ = htons(CPUClockSpeed / 1000000); |
| 1743 |
*wp++ = htons(CPUClockSpeed / 1000000); |
| 1744 |
*wp = htons(M68K_RTS); |
| 1745 |
if ((base = find_rom_data(base, 0xa000, cpu_speed_dat, sizeof(cpu_speed_dat))) != 0) { |
| 1746 |
D(bug("cpu_speed2 %08lx\n", base)); |
| 1747 |
wp = (uint16 *)(ROM_BASE + base); |
| 1748 |
*wp++ = htons(0x203c); // move.l #(MHz<<16)|MHz,d0 |
| 1749 |
*wp++ = htons(CPUClockSpeed / 1000000); |
| 1750 |
*wp++ = htons(CPUClockSpeed / 1000000); |
| 1751 |
*wp = htons(M68K_RTS); |
| 1752 |
} |
| 1753 |
|
| 1754 |
// Don't poke VIA in InitTimeMgr (via 0x298) |
| 1755 |
static const uint8 time_via_dat[] = {0x40, 0xe7, 0x00, 0x7c, 0x07, 0x00, 0x28, 0x78, 0x01, 0xd4, 0x43, 0xec, 0x10, 0x00}; |
| 1756 |
if ((base = find_rom_data(0x30000, 0x40000, time_via_dat, sizeof(time_via_dat))) == 0) return false; |
| 1757 |
D(bug("time_via %08lx\n", base)); |
| 1758 |
wp = (uint16 *)(ROM_BASE + base); |
| 1759 |
*wp++ = htons(0x4cdf); // movem.l (sp)+,d0-d5/a0-a4 |
| 1760 |
*wp++ = htons(0x1f3f); |
| 1761 |
*wp = htons(M68K_RTS); |
| 1762 |
|
| 1763 |
// Don't read from 0xff800000 (Name Registry, Open Firmware?) (via 0x2a2) |
| 1764 |
// Remove this if FE03 works!! |
| 1765 |
static const uint8 open_firmware_dat[] = {0x2f, 0x79, 0xff, 0x80, 0x00, 0x00, 0x00, 0xfc}; |
| 1766 |
if ((base = find_rom_data(0x48000, 0x58000, open_firmware_dat, sizeof(open_firmware_dat))) == 0) return false; |
| 1767 |
D(bug("open_firmware %08lx\n", base)); |
| 1768 |
wp = (uint16 *)(ROM_BASE + base); |
| 1769 |
*wp++ = htons(0x2f7c); // move.l #deadbeef,0xfc(a7) |
| 1770 |
*wp++ = htons(0xdead); |
| 1771 |
*wp++ = htons(0xbeef); |
| 1772 |
*wp = htons(0x00fc); |
| 1773 |
wp = (uint16 *)(ROM_BASE + base + 0x1a); |
| 1774 |
*wp++ = htons(M68K_NOP); // (FE03 opcode, tries to jump to 0xdeadbeef) |
| 1775 |
*wp = htons(M68K_NOP); |
| 1776 |
|
| 1777 |
// Don't EnableExtCache (via 0x2b2) |
| 1778 |
static const uint8 ext_cache2_dat[] = {0x4f, 0xef, 0xff, 0xec, 0x20, 0x4f, 0x10, 0xbc, 0x00, 0x01, 0x11, 0x7c, 0x00, 0x1b}; |
| 1779 |
if ((base = find_rom_data(0x13000, 0x20000, ext_cache2_dat, sizeof(ext_cache2_dat))) == 0) return false; |
| 1780 |
D(bug("ext_cache2 %08lx\n", base)); |
| 1781 |
wp = (uint16 *)(ROM_BASE + base); |
| 1782 |
*wp = htons(M68K_RTS); |
| 1783 |
|
| 1784 |
// Don't install Time Manager task for 60Hz interrupt (Enable60HzInts, via 0x2b8) |
| 1785 |
if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) { |
| 1786 |
static const uint8 tm_task_dat[] = {0x30, 0x3c, 0x4e, 0x2b, 0xa9, 0xc9}; |
| 1787 |
if ((base = find_rom_data(0x2a0, 0x320, tm_task_dat, sizeof(tm_task_dat))) == 0) return false; |
| 1788 |
D(bug("tm_task %08lx\n", base)); |
| 1789 |
wp = (uint16 *)(ROM_BASE + base + 28); |
| 1790 |
*wp++ = htons(M68K_NOP); |
| 1791 |
*wp++ = htons(M68K_NOP); |
| 1792 |
*wp++ = htons(M68K_NOP); |
| 1793 |
*wp++ = htons(M68K_NOP); |
| 1794 |
*wp++ = htons(M68K_NOP); |
| 1795 |
*wp = htons(M68K_NOP); |
| 1796 |
} else { |
| 1797 |
static const uint8 tm_task_dat[] = {0x20, 0x3c, 0x73, 0x79, 0x73, 0x61}; |
| 1798 |
if ((base = find_rom_data(0x280, 0x300, tm_task_dat, sizeof(tm_task_dat))) == 0) return false; |
| 1799 |
D(bug("tm_task %08lx\n", base)); |
| 1800 |
wp = (uint16 *)(ROM_BASE + base - 6); |
| 1801 |
*wp++ = htons(M68K_NOP); |
| 1802 |
*wp++ = htons(M68K_NOP); |
| 1803 |
*wp = htons(M68K_NOP); |
| 1804 |
} |
| 1805 |
|
| 1806 |
// Don't read PVR from 0x5fffef80 in DriverServicesLib (via 0x316) |
| 1807 |
if (ROMType != ROMTYPE_NEWWORLD && ROMType != ROMTYPE_GOSSAMER) { |
| 1808 |
uint32 dsl_offset = find_rom_resource(FOURCC('n','l','i','b'), -16401); |
| 1809 |
if (ROMType == ROMTYPE_ZANZIBAR) { |
| 1810 |
static const uint8 dsl_pvr_dat[] = {0x40, 0x82, 0x00, 0x40, 0x38, 0x60, 0xef, 0x80, 0x3c, 0x63, 0x60, 0x00, 0x80, 0x83, 0x00, 0x00, 0x54, 0x84, 0x84, 0x3e}; |
| 1811 |
if ((base = find_rom_data(dsl_offset, dsl_offset + 0x6000, dsl_pvr_dat, sizeof(dsl_pvr_dat))) == 0) return false; |
| 1812 |
} else { |
| 1813 |
static const uint8 dsl_pvr_dat[] = {0x3b, 0xc3, 0x00, 0x00, 0x30, 0x84, 0xff, 0xa0, 0x40, 0x82, 0x00, 0x44, 0x80, 0x84, 0xef, 0xe0, 0x54, 0x84, 0x84, 0x3e}; |
| 1814 |
if ((base = find_rom_data(dsl_offset, dsl_offset + 0x6000, dsl_pvr_dat, sizeof(dsl_pvr_dat))) == 0) return false; |
| 1815 |
} |
| 1816 |
D(bug("dsl_pvr %08lx\n", base)); |
| 1817 |
lp = (uint32 *)(ROM_BASE + base + 12); |
| 1818 |
*lp = htonl(0x3c800000 | (PVR >> 16)); // lis r4,PVR |
| 1819 |
|
| 1820 |
// Don't read bus clock from 0x5fffef88 in DriverServicesLib (via 0x316) |
| 1821 |
if (ROMType == ROMTYPE_ZANZIBAR) { |
| 1822 |
static const uint8 dsl_bus_dat[] = {0x81, 0x07, 0x00, 0x00, 0x39, 0x20, 0x42, 0x40, 0x81, 0x62, 0xff, 0x20}; |
| 1823 |
if ((base = find_rom_data(dsl_offset, dsl_offset + 0x6000, dsl_bus_dat, sizeof(dsl_bus_dat))) == 0) return false; |
| 1824 |
D(bug("dsl_bus %08lx\n", base)); |
| 1825 |
lp = (uint32 *)(ROM_BASE + base); |
| 1826 |
*lp = htonl(0x81000000 + XLM_BUS_CLOCK); // lwz r8,(bus clock speed) |
| 1827 |
} else { |
| 1828 |
static const uint8 dsl_bus_dat[] = {0x80, 0x83, 0xef, 0xe8, 0x80, 0x62, 0x00, 0x10, 0x7c, 0x04, 0x03, 0x96}; |
| 1829 |
if ((base = find_rom_data(dsl_offset, dsl_offset + 0x6000, dsl_bus_dat, sizeof(dsl_bus_dat))) == 0) return false; |
| 1830 |
D(bug("dsl_bus %08lx\n", base)); |
| 1831 |
lp = (uint32 *)(ROM_BASE + base); |
| 1832 |
*lp = htonl(0x80800000 + XLM_BUS_CLOCK); // lwz r4,(bus clock speed) |
| 1833 |
} |
| 1834 |
} |
| 1835 |
|
| 1836 |
// Don't open InterruptTreeTNT in MotherBoardHAL init in DriverServicesLib init |
| 1837 |
if (ROMType == ROMTYPE_ZANZIBAR) { |
| 1838 |
lp = (uint32 *)(ROM_BASE + find_rom_resource(FOURCC('n','l','i','b'), -16408) + 0x16c); |
| 1839 |
*lp = htonl(0x38600000); // li r3,0 |
| 1840 |
} |
| 1841 |
|
| 1842 |
// FIXME: Fake reading from [HpChk]+4 (the callchain reports some function from DriverServicesLib) |
| 1843 |
if (1) { |
| 1844 |
uint32 hpchk_offset = find_rom_resource(FOURCC('n','l','i','b'), 10); |
| 1845 |
static const uint8 hpchk_dat[] = {0x80, 0x80, 0x03, 0x16, 0x94, 0x21, 0xff, 0xb0, 0x83, 0xc4, 0x00, 0x04}; |
| 1846 |
if ((base = find_rom_data(hpchk_offset, hpchk_offset + 0x3000, hpchk_dat, sizeof(hpchk_dat))) == 0) return false; |
| 1847 |
D(bug("hpchk %08lx\n", base)); |
| 1848 |
lp = (uint32 *)(ROM_BASE + base); |
| 1849 |
*lp = htonl(0x80800000 + XLM_ZERO_PAGE); // lwz r4,(zero page) |
| 1850 |
} |
| 1851 |
|
| 1852 |
// Patch Name Registry |
| 1853 |
static const uint8 name_reg_dat[] = {0x70, 0xff, 0xab, 0xeb}; |
| 1854 |
if ((base = find_rom_data(0x300, 0x380, name_reg_dat, sizeof(name_reg_dat))) == 0) return false; |
| 1855 |
D(bug("name_reg %08lx\n", base)); |
| 1856 |
wp = (uint16 *)(ROM_BASE + base); |
| 1857 |
*wp = htons(M68K_EMUL_OP_NAME_REGISTRY); |
| 1858 |
|
| 1859 |
#if DISABLE_SCSI |
| 1860 |
// Fake SCSI Manager |
| 1861 |
// Remove this if SCSI Manager works!! |
| 1862 |
static const uint8 scsi_mgr_a_dat[] = {0x4e, 0x56, 0x00, 0x00, 0x20, 0x3c, 0x00, 0x00, 0x04, 0x0c, 0xa7, 0x1e}; |
| 1863 |
static const uint8 scsi_mgr_b_dat[] = {0x4e, 0x56, 0x00, 0x00, 0x2f, 0x0c, 0x20, 0x3c, 0x00, 0x00, 0x04, 0x0c, 0xa7, 0x1e}; |
| 1864 |
if ((base = find_rom_data(0x1c000, 0x28000, scsi_mgr_a_dat, sizeof(scsi_mgr_a_dat))) == 0) { |
| 1865 |
if ((base = find_rom_data(0x1c000, 0x28000, scsi_mgr_b_dat, sizeof(scsi_mgr_b_dat))) == 0) return false; |
| 1866 |
} |
| 1867 |
D(bug("scsi_mgr %08lx\n", base)); |
| 1868 |
wp = (uint16 *)(ROM_BASE + base); |
| 1869 |
*wp++ = htons(0x21fc); // move.l #xxx,0x624 (SCSIAtomic) |
| 1870 |
*wp++ = htons((ROM_BASE + base + 18) >> 16); |
| 1871 |
*wp++ = htons((ROM_BASE + base + 18) & 0xffff); |
| 1872 |
*wp++ = htons(0x0624); |
| 1873 |
*wp++ = htons(0x21fc); // move.l #xxx,0xe54 (SCSIDispatch) |
| 1874 |
*wp++ = htons((ROM_BASE + base + 22) >> 16); |
| 1875 |
*wp++ = htons((ROM_BASE + base + 22) & 0xffff); |
| 1876 |
*wp++ = htons(0x0e54); |
| 1877 |
*wp++ = htons(M68K_RTS); |
| 1878 |
*wp++ = htons(M68K_EMUL_OP_SCSI_ATOMIC); |
| 1879 |
*wp++ = htons(M68K_RTS); |
| 1880 |
*wp++ = htons(M68K_EMUL_OP_SCSI_DISPATCH); |
| 1881 |
*wp = htons(0x4ed0); // jmp (a0) |
| 1882 |
wp = (uint16 *)(ROM_BASE + base + 0x20); |
| 1883 |
*wp++ = htons(0x7000); // moveq #0,d0 |
| 1884 |
*wp = htons(M68K_RTS); |
| 1885 |
#endif |
| 1886 |
|
| 1887 |
#if DISABLE_SCSI |
| 1888 |
// Don't access SCSI variables |
| 1889 |
// Remove this if SCSI Manager works!! |
| 1890 |
if (ROMType == ROMTYPE_NEWWORLD) { |
| 1891 |
static const uint8 scsi_var_dat[] = {0x70, 0x01, 0xa0, 0x89, 0x4a, 0x6e, 0xfe, 0xac, 0x4f, 0xef, 0x00, 0x10, 0x66, 0x00}; |
| 1892 |
if ((base = find_rom_data(0x1f500, 0x1f600, scsi_var_dat, sizeof(scsi_var_dat))) != 0) { |
| 1893 |
D(bug("scsi_var %08lx\n", base)); |
| 1894 |
wp = (uint16 *)(ROM_BASE + base + 12); |
| 1895 |
*wp = htons(0x6000); // bra |
| 1896 |
} |
| 1897 |
|
| 1898 |
static const uint8 scsi_var2_dat[] = {0x4e, 0x56, 0xfc, 0x58, 0x48, 0xe7, 0x1f, 0x38}; |
| 1899 |
if ((base = find_rom_data(0x1f700, 0x1f800, scsi_var2_dat, sizeof(scsi_var2_dat))) != 0) { |
| 1900 |
D(bug("scsi_var2 %08lx\n", base)); |
| 1901 |
wp = (uint16 *)(ROM_BASE + base); |
| 1902 |
*wp++ = htons(0x7000); // moveq #0,d0 |
| 1903 |
*wp = htons(M68K_RTS); |
| 1904 |
} |
| 1905 |
} |
| 1906 |
else if (ROMType == ROMTYPE_GOSSAMER) { |
| 1907 |
static const uint8 scsi_var_dat[] = {0x70, 0x01, 0xa0, 0x89, 0x4a, 0x6e, 0xfe, 0xac, 0x4f, 0xef, 0x00, 0x10, 0x66, 0x00}; |
| 1908 |
if ((base = find_rom_data(0x1d700, 0x1d800, scsi_var_dat, sizeof(scsi_var_dat))) != 0) { |
| 1909 |
D(bug("scsi_var %08lx\n", base)); |
| 1910 |
wp = (uint16 *)(ROM_BASE + base + 12); |
| 1911 |
*wp = htons(0x6000); // bra |
| 1912 |
} |
| 1913 |
|
| 1914 |
static const uint8 scsi_var2_dat[] = {0x4e, 0x56, 0xfc, 0x5a, 0x48, 0xe7, 0x1f, 0x38}; |
| 1915 |
if ((base = find_rom_data(0x1d900, 0x1da00, scsi_var2_dat, sizeof(scsi_var2_dat))) != 0) { |
| 1916 |
D(bug("scsi_var2 %08lx\n", base)); |
| 1917 |
wp = (uint16 *)(ROM_BASE + base); |
| 1918 |
*wp++ = htons(0x7000); // moveq #0,d0 |
| 1919 |
*wp = htons(M68K_RTS); |
| 1920 |
} |
| 1921 |
} |
| 1922 |
#endif |
| 1923 |
|
| 1924 |
// Don't wait in ADBInit (via 0x36c) |
| 1925 |
static const uint8 adb_init_dat[] = {0x08, 0x2b, 0x00, 0x05, 0x01, 0x5d, 0x66, 0xf8}; |
| 1926 |
if ((base = find_rom_data(0x31000, 0x3d000, adb_init_dat, sizeof(adb_init_dat))) == 0) return false; |
| 1927 |
D(bug("adb_init %08lx\n", base)); |
| 1928 |
wp = (uint16 *)(ROM_BASE + base + 6); |
| 1929 |
*wp = htons(M68K_NOP); |
| 1930 |
|
| 1931 |
// Modify check in InitResources() so that addresses >0x80000000 work |
| 1932 |
static const uint8 init_res_dat[] = {0x4a, 0xb8, 0x0a, 0x50, 0x6e, 0x20}; |
| 1933 |
if ((base = find_rom_data(0x78000, 0x8c000, init_res_dat, sizeof(init_res_dat))) == 0) return false; |
| 1934 |
D(bug("init_res %08lx\n", base)); |
| 1935 |
bp = (uint8 *)(ROM_BASE + base + 4); |
| 1936 |
*bp = 0x66; |
| 1937 |
|
| 1938 |
// Modify vCheckLoad() so that we can patch resources (68k Resource Manager) |
| 1939 |
static const uint8 check_load_dat[] = {0x20, 0x78, 0x07, 0xf0, 0x4e, 0xd0}; |
| 1940 |
if ((base = find_rom_data(0x78000, 0x8c000, check_load_dat, sizeof(check_load_dat))) == 0) return false; |
| 1941 |
D(bug("check_load %08lx\n", base)); |
| 1942 |
wp = (uint16 *)(ROM_BASE + base); |
| 1943 |
*wp++ = htons(M68K_JMP); |
| 1944 |
*wp++ = htons((ROM_BASE + CHECK_LOAD_PATCH_SPACE) >> 16); |
| 1945 |
*wp = htons((ROM_BASE + CHECK_LOAD_PATCH_SPACE) & 0xffff); |
| 1946 |
wp = (uint16 *)(ROM_BASE + CHECK_LOAD_PATCH_SPACE); |
| 1947 |
*wp++ = htons(0x2f03); // move.l d3,-(a7) |
| 1948 |
*wp++ = htons(0x2078); // move.l $07f0,a0 |
| 1949 |
*wp++ = htons(0x07f0); |
| 1950 |
*wp++ = htons(M68K_JSR_A0); |
| 1951 |
*wp++ = htons(M68K_EMUL_OP_CHECKLOAD); |
| 1952 |
*wp = htons(M68K_RTS); |
| 1953 |
|
| 1954 |
// Replace .Sony driver |
| 1955 |
sony_offset = find_rom_resource(FOURCC('D','R','V','R'), 4); |
| 1956 |
if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_NEWWORLD) |
| 1957 |
sony_offset = find_rom_resource(FOURCC('D','R','V','R'), 4, true); // First DRVR 4 is .MFMFloppy |
| 1958 |
if (sony_offset == 0) { |
| 1959 |
sony_offset = find_rom_resource(FOURCC('n','d','r','v'), -20196); // NewWorld 1.6 has "PCFloppy" ndrv |
| 1960 |
if (sony_offset == 0) |
| 1961 |
return false; |
| 1962 |
lp = (uint32 *)(ROM_BASE + rsrc_ptr + 8); |
| 1963 |
*lp = htonl(FOURCC('D','R','V','R')); |
| 1964 |
wp = (uint16 *)(ROM_BASE + rsrc_ptr + 12); |
| 1965 |
*wp = htons(4); |
| 1966 |
} |
| 1967 |
D(bug("sony_offset %08lx\n", sony_offset)); |
| 1968 |
memcpy((void *)(ROM_BASE + sony_offset), sony_driver, sizeof(sony_driver)); |
| 1969 |
|
| 1970 |
// Install .Disk and .AppleCD drivers |
| 1971 |
memcpy((void *)(ROM_BASE + sony_offset + 0x100), disk_driver, sizeof(disk_driver)); |
| 1972 |
memcpy((void *)(ROM_BASE + sony_offset + 0x200), cdrom_driver, sizeof(cdrom_driver)); |
| 1973 |
|
| 1974 |
// Install serial drivers |
| 1975 |
gen_ain_driver( ROM_BASE + sony_offset + 0x300); |
| 1976 |
gen_aout_driver(ROM_BASE + sony_offset + 0x400); |
| 1977 |
gen_bin_driver( ROM_BASE + sony_offset + 0x500); |
| 1978 |
gen_bout_driver(ROM_BASE + sony_offset + 0x600); |
| 1979 |
|
| 1980 |
// Copy icons to ROM |
| 1981 |
SonyDiskIconAddr = ROM_BASE + sony_offset + 0x800; |
| 1982 |
memcpy((void *)(ROM_BASE + sony_offset + 0x800), SonyDiskIcon, sizeof(SonyDiskIcon)); |
| 1983 |
SonyDriveIconAddr = ROM_BASE + sony_offset + 0xa00; |
| 1984 |
memcpy((void *)(ROM_BASE + sony_offset + 0xa00), SonyDriveIcon, sizeof(SonyDriveIcon)); |
| 1985 |
DiskIconAddr = ROM_BASE + sony_offset + 0xc00; |
| 1986 |
memcpy((void *)(ROM_BASE + sony_offset + 0xc00), DiskIcon, sizeof(DiskIcon)); |
| 1987 |
CDROMIconAddr = ROM_BASE + sony_offset + 0xe00; |
| 1988 |
memcpy((void *)(ROM_BASE + sony_offset + 0xe00), CDROMIcon, sizeof(CDROMIcon)); |
| 1989 |
|
| 1990 |
// Patch driver install routine |
| 1991 |
static const uint8 drvr_install_dat[] = {0xa7, 0x1e, 0x21, 0xc8, 0x01, 0x1c, 0x4e, 0x75}; |
| 1992 |
if ((base = find_rom_data(0xb00, 0xd00, drvr_install_dat, sizeof(drvr_install_dat))) == 0) return false; |
| 1993 |
D(bug("drvr_install %08lx\n", base)); |
| 1994 |
wp = (uint16 *)(ROM_BASE + base + 8); |
| 1995 |
*wp++ = htons(M68K_EMUL_OP_INSTALL_DRIVERS); |
| 1996 |
*wp = htons(M68K_RTS); |
| 1997 |
|
| 1998 |
// Don't install serial drivers from ROM |
| 1999 |
if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) { |
| 2000 |
wp = (uint16 *)(ROM_BASE + find_rom_resource(FOURCC('S','E','R','D'), 0)); |
| 2001 |
*wp = htons(M68K_RTS); |
| 2002 |
} else { |
| 2003 |
wp = (uint16 *)(ROM_BASE + find_rom_resource(FOURCC('s','l','0','5'), 2) + 0xc4); |
| 2004 |
*wp++ = htons(M68K_NOP); |
| 2005 |
*wp++ = htons(M68K_NOP); |
| 2006 |
*wp++ = htons(M68K_NOP); |
| 2007 |
*wp++ = htons(M68K_NOP); |
| 2008 |
*wp = htons(0x7000); // moveq #0,d0 |
| 2009 |
wp = (uint16 *)(ROM_BASE + find_rom_resource(FOURCC('s','l','0','5'), 2) + 0x8ee); |
| 2010 |
*wp = htons(M68K_NOP); |
| 2011 |
} |
| 2012 |
uint32 nsrd_offset = find_rom_resource(FOURCC('n','s','r','d'), 1); |
| 2013 |
if (nsrd_offset) { |
| 2014 |
lp = (uint32 *)(ROM_BASE + rsrc_ptr + 8); |
| 2015 |
*lp = htonl(FOURCC('x','s','r','d')); |
| 2016 |
} |
| 2017 |
|
| 2018 |
// Replace ADBOp() |
| 2019 |
memcpy((void *)(ROM_BASE + find_rom_trap(0xa07c)), adbop_patch, sizeof(adbop_patch)); |
| 2020 |
|
| 2021 |
// Replace Time Manager |
| 2022 |
wp = (uint16 *)(ROM_BASE + find_rom_trap(0xa058)); |
| 2023 |
*wp++ = htons(M68K_EMUL_OP_INSTIME); |
| 2024 |
*wp = htons(M68K_RTS); |
| 2025 |
wp = (uint16 *)(ROM_BASE + find_rom_trap(0xa059)); |
| 2026 |
*wp++ = htons(0x40e7); // move sr,-(sp) |
| 2027 |
*wp++ = htons(0x007c); // ori #$0700,sr |
| 2028 |
*wp++ = htons(0x0700); |
| 2029 |
*wp++ = htons(M68K_EMUL_OP_RMVTIME); |
| 2030 |
*wp++ = htons(0x46df); // move (sp)+,sr |
| 2031 |
*wp = htons(M68K_RTS); |
| 2032 |
wp = (uint16 *)(ROM_BASE + find_rom_trap(0xa05a)); |
| 2033 |
*wp++ = htons(0x40e7); // move sr,-(sp) |
| 2034 |
*wp++ = htons(0x007c); // ori #$0700,sr |
| 2035 |
*wp++ = htons(0x0700); |
| 2036 |
*wp++ = htons(M68K_EMUL_OP_PRIMETIME); |
| 2037 |
*wp++ = htons(0x46df); // move (sp)+,sr |
| 2038 |
*wp = htons(M68K_RTS); |
| 2039 |
wp = (uint16 *)(ROM_BASE + find_rom_trap(0xa093)); |
| 2040 |
*wp++ = htons(M68K_EMUL_OP_MICROSECONDS); |
| 2041 |
*wp = htons(M68K_RTS); |
| 2042 |
|
| 2043 |
// Disable Egret Manager |
| 2044 |
static const uint8 egret_dat[] = {0x2f, 0x30, 0x81, 0xe2, 0x20, 0x10, 0x00, 0x18}; |
| 2045 |
if ((base = find_rom_data(0xa000, 0x10000, egret_dat, sizeof(egret_dat))) == 0) return false; |
| 2046 |
D(bug("egret %08lx\n", base)); |
| 2047 |
wp = (uint16 *)(ROM_BASE + base); |
| 2048 |
*wp++ = htons(0x7000); |
| 2049 |
*wp = htons(M68K_RTS); |
| 2050 |
|
| 2051 |
// Don't call FE0A opcode in Shutdown Manager |
| 2052 |
static const uint8 shutdown_dat[] = {0x40, 0xe7, 0x00, 0x7c, 0x07, 0x00, 0x48, 0xe7, 0x3f, 0x00, 0x2c, 0x00, 0x2e, 0x01}; |
| 2053 |
if ((base = find_rom_data(0x30000, 0x40000, shutdown_dat, sizeof(shutdown_dat))) == 0) return false; |
| 2054 |
D(bug("shutdown %08lx\n", base)); |
| 2055 |
wp = (uint16 *)(ROM_BASE + base); |
| 2056 |
if (ROMType == ROMTYPE_ZANZIBAR) |
| 2057 |
*wp = htons(M68K_RTS); |
| 2058 |
else if (ntohs(wp[-4]) == 0x61ff) |
| 2059 |
*wp = htons(M68K_RTS); |
| 2060 |
else if (ntohs(wp[-2]) == 0x6700) |
| 2061 |
wp[-2] = htons(0x6000); // bra |
| 2062 |
|
| 2063 |
// Patch PowerOff() |
| 2064 |
wp = (uint16 *)(ROM_BASE + find_rom_trap(0xa05b)); // PowerOff() |
| 2065 |
*wp = htons(M68K_EMUL_RETURN); |
| 2066 |
|
| 2067 |
// Patch VIA interrupt handler |
| 2068 |
static const uint8 via_int_dat[] = {0x70, 0x7f, 0xc0, 0x29, 0x1a, 0x00, 0xc0, 0x29, 0x1c, 0x00}; |
| 2069 |
if ((base = find_rom_data(0x13000, 0x1c000, via_int_dat, sizeof(via_int_dat))) == 0) return false; |
| 2070 |
D(bug("via_int %08lx\n", base)); |
| 2071 |
uint32 level1_int = ROM_BASE + base; |
| 2072 |
wp = (uint16 *)level1_int; // Level 1 handler |
| 2073 |
*wp++ = htons(0x7002); // moveq #2,d0 (60Hz interrupt) |
| 2074 |
*wp++ = htons(M68K_NOP); |
| 2075 |
*wp++ = htons(M68K_NOP); |
| 2076 |
*wp++ = htons(M68K_NOP); |
| 2077 |
*wp = htons(M68K_NOP); |
| 2078 |
|
| 2079 |
static const uint8 via_int2_dat[] = {0x13, 0x7c, 0x00, 0x02, 0x1a, 0x00, 0x4e, 0x71, 0x52, 0xb8, 0x01, 0x6a}; |
| 2080 |
if ((base = find_rom_data(0x10000, 0x18000, via_int2_dat, sizeof(via_int2_dat))) == 0) return false; |
| 2081 |
D(bug("via_int2 %08lx\n", base)); |
| 2082 |
wp = (uint16 *)(ROM_BASE + base); // 60Hz handler |
| 2083 |
*wp++ = htons(M68K_EMUL_OP_IRQ); |
| 2084 |
*wp++ = htons(0x4a80); // tst.l d0 |
| 2085 |
*wp++ = htons(0x6700); // beq xxx |
| 2086 |
*wp = htons(0xffe8); |
| 2087 |
|
| 2088 |
if (ROMType == ROMTYPE_NEWWORLD) { |
| 2089 |
static const uint8 via_int3_dat[] = {0x48, 0xe7, 0xf0, 0xf0, 0x76, 0x01, 0x60, 0x26}; |
| 2090 |
if ((base = find_rom_data(0x15000, 0x19000, via_int3_dat, sizeof(via_int3_dat))) == 0) return false; |
| 2091 |
D(bug("via_int3 %08lx\n", base)); |
| 2092 |
wp = (uint16 *)(ROM_BASE + base); // CHRP level 1 handler |
| 2093 |
*wp++ = htons(M68K_JMP); |
| 2094 |
*wp++ = htons((level1_int - 12) >> 16); |
| 2095 |
*wp = htons((level1_int - 12) & 0xffff); |
| 2096 |
} |
| 2097 |
|
| 2098 |
// Patch PutScrap() for clipboard exchange with host OS |
| 2099 |
uint32 put_scrap = find_rom_trap(0xa9fe); // PutScrap() |
| 2100 |
wp = (uint16 *)(ROM_BASE + PUT_SCRAP_PATCH_SPACE); |
| 2101 |
*wp++ = htons(M68K_EMUL_OP_PUT_SCRAP); |
| 2102 |
*wp++ = htons(M68K_JMP); |
| 2103 |
*wp++ = htons((ROM_BASE + put_scrap) >> 16); |
| 2104 |
*wp++ = htons((ROM_BASE + put_scrap) & 0xffff); |
| 2105 |
lp = (uint32 *)(ROM_BASE + 0x22); |
| 2106 |
lp = (uint32 *)(ROM_BASE + ntohl(*lp)); |
| 2107 |
lp[0xa9fe & 0x3ff] = htonl(PUT_SCRAP_PATCH_SPACE); |
| 2108 |
|
| 2109 |
// Patch GetScrap() for clipboard exchange with host OS |
| 2110 |
uint32 get_scrap = find_rom_trap(0xa9fd); // GetScrap() |
| 2111 |
wp = (uint16 *)(ROM_BASE + GET_SCRAP_PATCH_SPACE); |
| 2112 |
*wp++ = htons(M68K_EMUL_OP_GET_SCRAP); |
| 2113 |
*wp++ = htons(M68K_JMP); |
| 2114 |
*wp++ = htons((ROM_BASE + get_scrap) >> 16); |
| 2115 |
*wp++ = htons((ROM_BASE + get_scrap) & 0xffff); |
| 2116 |
lp = (uint32 *)(ROM_BASE + 0x22); |
| 2117 |
lp = (uint32 *)(ROM_BASE + ntohl(*lp)); |
| 2118 |
lp[0xa9fd & 0x3ff] = htonl(GET_SCRAP_PATCH_SPACE); |
| 2119 |
|
| 2120 |
#if __BEOS__ |
| 2121 |
// Patch SynchIdleTime() |
| 2122 |
if (PrefsFindBool("idlewait")) { |
| 2123 |
wp = (uint16 *)(ROM_BASE + find_rom_trap(0xabf7) + 4); // SynchIdleTime() |
| 2124 |
D(bug("SynchIdleTime at %08lx\n", wp)); |
| 2125 |
if (ntohs(*wp) == 0x2078) { |
| 2126 |
*wp++ = htons(M68K_EMUL_OP_IDLE_TIME); |
| 2127 |
*wp = htons(M68K_NOP); |
| 2128 |
} else { |
| 2129 |
D(bug("SynchIdleTime patch not installed\n")); |
| 2130 |
} |
| 2131 |
} |
| 2132 |
#endif |
| 2133 |
|
| 2134 |
// Construct list of all sifters used by sound components in ROM |
| 2135 |
D(bug("Searching for sound components with type sdev in ROM\n")); |
| 2136 |
uint32 thing = find_rom_resource(FOURCC('t','h','n','g')); |
| 2137 |
while (thing) { |
| 2138 |
thing += ROM_BASE; |
| 2139 |
D(bug(" found %c%c%c%c %c%c%c%c\n", ReadMacInt8(thing), ReadMacInt8(thing + 1), ReadMacInt8(thing + 2), ReadMacInt8(thing + 3), ReadMacInt8(thing + 4), ReadMacInt8(thing + 5), ReadMacInt8(thing + 6), ReadMacInt8(thing + 7))); |
| 2140 |
if (ReadMacInt32(thing) == FOURCC('s','d','e','v') && ReadMacInt32(thing + 4) == FOURCC('s','i','n','g')) { |
| 2141 |
WriteMacInt32(thing + 4, FOURCC('a','w','g','c')); |
| 2142 |
D(bug(" found sdev component at offset %08x in ROM\n", thing)); |
| 2143 |
AddSifter(ReadMacInt32(thing + componentResType), ReadMacInt16(thing + componentResID)); |
| 2144 |
if (ReadMacInt32(thing + componentPFCount)) |
| 2145 |
AddSifter(ReadMacInt32(thing + componentPFResType), ReadMacInt16(thing + componentPFResID)); |
| 2146 |
} |
| 2147 |
thing = find_rom_resource(FOURCC('t','h','n','g'), 4711, true); |
| 2148 |
} |
| 2149 |
|
| 2150 |
// Patch component code |
| 2151 |
D(bug("Patching sifters in ROM\n")); |
| 2152 |
for (int i=0; i<num_sifters; i++) { |
| 2153 |
if ((thing = find_rom_resource(sifter_list[i].type, sifter_list[i].id)) != 0) { |
| 2154 |
D(bug(" patching type %08x, id %d\n", sifter_list[i].type, sifter_list[i].id)); |
| 2155 |
// Install 68k glue code |
| 2156 |
uint16 *wp = (uint16 *)(ROM_BASE + thing); |
| 2157 |
*wp++ = htons(0x4e56); *wp++ = htons(0x0000); // link a6,#0 |
| 2158 |
*wp++ = htons(0x48e7); *wp++ = htons(0x8018); // movem.l d0/a3-a4,-(a7) |
| 2159 |
*wp++ = htons(0x266e); *wp++ = htons(0x000c); // movea.l $c(a6),a3 |
| 2160 |
*wp++ = htons(0x286e); *wp++ = htons(0x0008); // movea.l $8(a6),a4 |
| 2161 |
*wp++ = htons(M68K_EMUL_OP_AUDIO_DISPATCH); |
| 2162 |
*wp++ = htons(0x2d40); *wp++ = htons(0x0010); // move.l d0,$10(a6) |
| 2163 |
*wp++ = htons(0x4cdf); *wp++ = htons(0x1801); // movem.l (a7)+,d0/a3-a4 |
| 2164 |
*wp++ = htons(0x4e5e); // unlk a6 |
| 2165 |
*wp++ = htons(0x4e74); *wp++ = htons(0x0008); // rtd #8 |
| 2166 |
} |
| 2167 |
} |
| 2168 |
return true; |
| 2169 |
} |
| 2170 |
|
| 2171 |
|
| 2172 |
/* |
| 2173 |
* Install .Sony, disk and CD-ROM drivers |
| 2174 |
*/ |
| 2175 |
|
| 2176 |
void InstallDrivers(void) |
| 2177 |
{ |
| 2178 |
D(bug("Installing drivers...\n")); |
| 2179 |
M68kRegisters r; |
| 2180 |
SheepArray<SIZEOF_IOParam> pb_var; |
| 2181 |
const uintptr pb = pb_var.addr(); |
| 2182 |
|
| 2183 |
// Install floppy driver |
| 2184 |
if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) { |
| 2185 |
|
| 2186 |
// Force installation of floppy driver with NewWorld and Gossamer ROMs |
| 2187 |
r.a[0] = ROM_BASE + sony_offset; |
| 2188 |
r.d[0] = (uint32)SonyRefNum; |
| 2189 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 2190 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~SonyRefNum * 4); // Get driver handle from Unit Table |
| 2191 |
Execute68kTrap(0xa029, &r); // HLock() |
| 2192 |
uint32 dce = ReadMacInt32(r.a[0]); |
| 2193 |
WriteMacInt32(dce + dCtlDriver, ROM_BASE + sony_offset); |
| 2194 |
WriteMacInt16(dce + dCtlFlags, SonyDriverFlags); |
| 2195 |
} |
| 2196 |
|
| 2197 |
#if DISABLE_SCSI && 0 |
| 2198 |
// Fake SCSIGlobals |
| 2199 |
WriteMacInt32(0xc0c, SheepMem::ZeroPage()); |
| 2200 |
#endif |
| 2201 |
|
| 2202 |
// Open .Sony driver |
| 2203 |
SheepString sony_str("\005.Sony"); |
| 2204 |
WriteMacInt8(pb + ioPermssn, 0); |
| 2205 |
WriteMacInt32(pb + ioNamePtr, sony_str.addr()); |
| 2206 |
r.a[0] = pb; |
| 2207 |
Execute68kTrap(0xa000, &r); // Open() |
| 2208 |
|
| 2209 |
// Install disk driver |
| 2210 |
r.a[0] = ROM_BASE + sony_offset + 0x100; |
| 2211 |
r.d[0] = (uint32)DiskRefNum; |
| 2212 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 2213 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~DiskRefNum * 4); // Get driver handle from Unit Table |
| 2214 |
Execute68kTrap(0xa029, &r); // HLock() |
| 2215 |
uint32 dce = ReadMacInt32(r.a[0]); |
| 2216 |
WriteMacInt32(dce + dCtlDriver, ROM_BASE + sony_offset + 0x100); |
| 2217 |
WriteMacInt16(dce + dCtlFlags, DiskDriverFlags); |
| 2218 |
|
| 2219 |
// Open disk driver |
| 2220 |
SheepString disk_str("\005.Disk"); |
| 2221 |
WriteMacInt32(pb + ioNamePtr, disk_str.addr()); |
| 2222 |
r.a[0] = pb; |
| 2223 |
Execute68kTrap(0xa000, &r); // Open() |
| 2224 |
|
| 2225 |
// Install CD-ROM driver unless nocdrom option given |
| 2226 |
if (!PrefsFindBool("nocdrom")) { |
| 2227 |
|
| 2228 |
// Install CD-ROM driver |
| 2229 |
r.a[0] = ROM_BASE + sony_offset + 0x200; |
| 2230 |
r.d[0] = (uint32)CDROMRefNum; |
| 2231 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 2232 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~CDROMRefNum * 4); // Get driver handle from Unit Table |
| 2233 |
Execute68kTrap(0xa029, &r); // HLock() |
| 2234 |
dce = ReadMacInt32(r.a[0]); |
| 2235 |
WriteMacInt32(dce + dCtlDriver, ROM_BASE + sony_offset + 0x200); |
| 2236 |
WriteMacInt16(dce + dCtlFlags, CDROMDriverFlags); |
| 2237 |
|
| 2238 |
// Open CD-ROM driver |
| 2239 |
SheepString apple_cd("\010.AppleCD"); |
| 2240 |
WriteMacInt32(pb + ioNamePtr, apple_cd.addr()); |
| 2241 |
r.a[0] = pb; |
| 2242 |
Execute68kTrap(0xa000, &r); // Open() |
| 2243 |
} |
| 2244 |
|
| 2245 |
// Install serial drivers |
| 2246 |
r.a[0] = ROM_BASE + sony_offset + 0x300; |
| 2247 |
r.d[0] = (uint32)-6; |
| 2248 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 2249 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~(-6) * 4); // Get driver handle from Unit Table |
| 2250 |
Execute68kTrap(0xa029, &r); // HLock() |
| 2251 |
dce = ReadMacInt32(r.a[0]); |
| 2252 |
WriteMacInt32(dce + dCtlDriver, ROM_BASE + sony_offset + 0x300); |
| 2253 |
WriteMacInt16(dce + dCtlFlags, 0x4d00); |
| 2254 |
|
| 2255 |
r.a[0] = ROM_BASE + sony_offset + 0x400; |
| 2256 |
r.d[0] = (uint32)-7; |
| 2257 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 2258 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~(-7) * 4); // Get driver handle from Unit Table |
| 2259 |
Execute68kTrap(0xa029, &r); // HLock() |
| 2260 |
dce = ReadMacInt32(r.a[0]); |
| 2261 |
WriteMacInt32(dce + dCtlDriver, ROM_BASE + sony_offset + 0x400); |
| 2262 |
WriteMacInt16(dce + dCtlFlags, 0x4e00); |
| 2263 |
|
| 2264 |
r.a[0] = ROM_BASE + sony_offset + 0x500; |
| 2265 |
r.d[0] = (uint32)-8; |
| 2266 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 2267 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~(-8) * 4); // Get driver handle from Unit Table |
| 2268 |
Execute68kTrap(0xa029, &r); // HLock() |
| 2269 |
dce = ReadMacInt32(r.a[0]); |
| 2270 |
WriteMacInt32(dce + dCtlDriver, ROM_BASE + sony_offset + 0x500); |
| 2271 |
WriteMacInt16(dce + dCtlFlags, 0x4d00); |
| 2272 |
|
| 2273 |
r.a[0] = ROM_BASE + sony_offset + 0x600; |
| 2274 |
r.d[0] = (uint32)-9; |
| 2275 |
Execute68kTrap(0xa43d, &r); // DrvrInstallRsrvMem() |
| 2276 |
r.a[0] = ReadMacInt32(ReadMacInt32(0x11c) + ~(-9) * 4); // Get driver handle from Unit Table |
| 2277 |
Execute68kTrap(0xa029, &r); // HLock() |
| 2278 |
dce = ReadMacInt32(r.a[0]); |
| 2279 |
WriteMacInt32(dce + dCtlDriver, ROM_BASE + sony_offset + 0x600); |
| 2280 |
WriteMacInt16(dce + dCtlFlags, 0x4e00); |
| 2281 |
} |
