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root/cebix/SheepShaver/src/rom_patches.cpp

Comparing SheepShaver/src/rom_patches.cpp (file contents):
Revision 1.9 by gbeauche, 2003-09-29T20:30:19Z vs.
Revision 1.14 by gbeauche, 2003-10-06T21:00:48Z

#	Line 449 | Line 449 | static const uint8 cdrom_driver[] = {  //
449
450		#if EMULATED_PPC
451		#define SERIAL_TRAMPOLINES 1
452	<	static uint32 serial_nothing_tvect[2] = {POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_NOTHING), 0};
453	<	static uint32 serial_open_tvect[2] = {POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_OPEN), 0};
454	<	static uint32 serial_prime_in_tvect[2] = {POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_PRIME_IN), 0};
455	<	static uint32 serial_prime_out_tvect[2] = {POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_PRIME_OUT), 0};
456	<	static uint32 serial_control_tvect[2] = {POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_CONTROL), 0};
457	<	static uint32 serial_status_tvect[2] = {POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_STATUS), 0};
458	<	static uint32 serial_close_tvect[2] = {POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_CLOSE), 0};
452	>	static uint32 serial_nothing_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_NOTHING)), 0};
453	>	static uint32 serial_open_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_OPEN)), 0};
454	>	static uint32 serial_prime_in_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_PRIME_IN)), 0};
455	>	static uint32 serial_prime_out_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_PRIME_OUT)), 0};
456	>	static uint32 serial_control_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_CONTROL)), 0};
457	>	static uint32 serial_status_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_STATUS)), 0};
458	>	static uint32 serial_close_tvect[2] = {tswap32(POWERPC_NATIVE_OP_FUNC(NATIVE_SERIAL_CLOSE)), 0};
459		#elif defined(__linux__)
460		#define SERIAL_TRAMPOLINES 1
461		static uint32 serial_nothing_tvect[2] = {(uint32)SerialNothing, 0};
#	Line 718 | Line 718 | bool PatchROM(void)
718		ROMType = ROMTYPE_ZANZIBAR;
719		else if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot Gazelle", 12))
720		ROMType = ROMTYPE_GAZELLE;
721	+	else if (!memcmp((void *)(ROM_BASE + 0x30d064), "Boot Gossamer", 13))
722	+	ROMType = ROMTYPE_GOSSAMER;
723		else if (!memcmp((void *)(ROM_BASE + 0x30d064), "NewWorld", 8))
724		ROMType = ROMTYPE_NEWWORLD;
725		else
726		return false;
727
728	+	// Check that other ROM addresses point to really free regions
729	+	printf("%08x\n", ntohl(*(uint32 *)(ROM_BASE + CHECK_LOAD_PATCH_SPACE)));
730	+	if (ntohl(*(uint32 *)(ROM_BASE + CHECK_LOAD_PATCH_SPACE)) != 0x6b636b63)
731	+	return false;
732	+	if (ntohl(*(uint32 *)(ROM_BASE + PUT_SCRAP_PATCH_SPACE)) != 0x6b636b63)
733	+	return false;
734	+	if (ntohl(*(uint32 *)(ROM_BASE + GET_SCRAP_PATCH_SPACE)) != 0x6b636b63)
735	+	return false;
736	+	if (ntohl(*(uint32 *)(ROM_BASE + ADDR_MAP_PATCH_SPACE)) != 0x6b636b63)
737	+	return false;
738	+
739		// Apply patches
740		if (!patch_nanokernel_boot()) return false;
741		if (!patch_68k_emul()) return false;
#	Line 767 | Line 780 | static bool patch_nanokernel_boot(void)
780		lp[0xfd8 >> 2] = htonl(ROM_BASE + 0x2a);                // 68k reset vector
781
782		// Skip SR/BAT/SDR init
783	<	if (ROMType == ROMTYPE_GAZELLE || ROMType == ROMTYPE_NEWWORLD) {
783	>	if (ROMType == ROMTYPE_GAZELLE || ROMType == ROMTYPE_GOSSAMER || ROMType == ROMTYPE_NEWWORLD) {
784		lp = (uint32 *)(ROM_BASE + 0x310000);
785		*lp++ = htonl(POWERPC_NOP);
786		*lp = htonl(0x38000000);
787		}
788	<	static const uint32 sr_init_loc[] = {0x3101b0, 0x3101b0, 0x3101b0, 0x3101ec, 0x310200};
788	>	static const uint32 sr_init_loc[] = {0x3101b0, 0x3101b0, 0x3101b0, 0x3101ec, 0x3101fc, 0x310200};
789		lp = (uint32 *)(ROM_BASE + 0x310008);
790		*lp = htonl(0x48000000 | (sr_init_loc[ROMType] - 8) & 0xffff);  // b            ROM_BASE+0x3101b0
791		lp = (uint32 *)(ROM_BASE + sr_init_loc[ROMType]);
#	Line 782 | Line 795 | static bool patch_nanokernel_boot(void)
795		*lp = htonl(0x3de00010);                // lis  r15,0x0010      (size of kernel memory)
796
797		// Don't read PVR
798	<	static const uint32 pvr_loc[] = {0x3103b0, 0x3103b4, 0x3103b4, 0x310400, 0x310438};
798	>	static const uint32 pvr_loc[] = {0x3103b0, 0x3103b4, 0x3103b4, 0x310400, 0x310430, 0x310438};
799		lp = (uint32 *)(ROM_BASE + pvr_loc[ROMType]);
800		*lp = htonl(0x81800000 + XLM_PVR);      // lwz  r12,(theoretical PVR)
801
#	Line 930 | Line 943 | static bool patch_nanokernel_boot(void)
943		*lp = htonl(POWERPC_NOP);
944
945		// Don't read PVR
946	<	static const uint32 pvr_ofs[] = {0x138, 0x138, 0x138, 0x140, 0x148};
946	>	static const uint32 pvr_ofs[] = {0x138, 0x138, 0x138, 0x140, 0x148, 0x148};
947		lp = (uint32 *)(ROM_BASE + loc + pvr_ofs[ROMType]);
948		*lp = htonl(0x82e00000 + XLM_PVR);              // lwz  r23,(theoretical PVR)
949		lp = (uint32 *)(ROM_BASE + loc + 0x170);
950	<	if (ntohl(*lp) == 0x7eff42a6)   // NewWorld ROM
950	>	if (ntohl(*lp) == 0x7eff42a6)   // NewWorld or Gossamer ROM
951		*lp = htonl(0x82e00000 + XLM_PVR);      // lwz  r23,(theoretical PVR)
952		lp = (uint32 *)(ROM_BASE + 0x313134);
953		if (ntohl(*lp) == 0x7e5f42a6)
#	Line 947 | Line 960 | static bool patch_nanokernel_boot(void)
960		*lp = htonl(0x81200000 + XLM_PVR);      // lzw  r9,(theoritical PVR)
961
962		// Don't read SDR1
963	<	static const uint32 sdr1_ofs[] = {0x174, 0x174, 0x174, 0x17c, 0x19c};
963	>	static const uint32 sdr1_ofs[] = {0x174, 0x174, 0x174, 0x17c, 0x19c, 0x19c};
964		lp = (uint32 *)(ROM_BASE + loc + sdr1_ofs[ROMType]);
965		*lp++ = htonl(0x3d00dead);              // lis  r8,0xdead               (pointer to page table)
966		*lp++ = htonl(0x3ec0001f);              // lis  r22,0x001f      (size of page table)
967		*lp = htonl(POWERPC_NOP);
968
969		// Don't clear page table
970	<	static const uint32 pgtb_ofs[] = {0x198, 0x198, 0x198, 0x1a0, 0x1c4};
970	>	static const uint32 pgtb_ofs[] = {0x198, 0x198, 0x198, 0x1a0, 0x1c0, 0x1c4};
971		lp = (uint32 *)(ROM_BASE + loc + pgtb_ofs[ROMType]);
972		*lp = htonl(POWERPC_NOP);
973
974		// Don't invalidate TLB
975	<	static const uint32 tlb_ofs[] = {0x1a0, 0x1a0, 0x1a0, 0x1a8, 0x1cc};
975	>	static const uint32 tlb_ofs[] = {0x1a0, 0x1a0, 0x1a0, 0x1a8, 0x1c8, 0x1cc};
976		lp = (uint32 *)(ROM_BASE + loc + tlb_ofs[ROMType]);
977		*lp = htonl(POWERPC_NOP);
978
979		// Don't create RAM descriptor table
980	<	static const uint32 desc_ofs[] = {0x350, 0x350, 0x350, 0x358, 0x37c};
980	>	static const uint32 desc_ofs[] = {0x350, 0x350, 0x350, 0x358, 0x378, 0x37c};
981		lp = (uint32 *)(ROM_BASE + loc + desc_ofs[ROMType]);
982		*lp = htonl(POWERPC_NOP);
983
984		// Don't load SRs and BATs
985	<	static const uint32 sr_ofs[] = {0x3d8, 0x3d8, 0x3d8, 0x3e0, 0x404};
985	>	static const uint32 sr_ofs[] = {0x3d8, 0x3d8, 0x3d8, 0x3e0, 0x400, 0x404};
986		lp = (uint32 *)(ROM_BASE + loc + sr_ofs[ROMType]);
987		*lp = htonl(POWERPC_NOP);
988
989		// Don't mess with SRs
990	<	static const uint32 sr2_ofs[] = {0x312118, 0x312118, 0x312118, 0x312118, 0x3121b4};
990	>	static const uint32 sr2_ofs[] = {0x312118, 0x312118, 0x312118, 0x312118, 0x312118, 0x3121b4};
991		lp = (uint32 *)(ROM_BASE + sr2_ofs[ROMType]);
992		*lp = htonl(POWERPC_BLR);
993
994		// Don't check performance monitor
995	<	static const uint32 pm_ofs[] = {0x313148, 0x313148, 0x313148, 0x313148, 0x313218};
995	>	static const uint32 pm_ofs[] = {0x313148, 0x313148, 0x313148, 0x313148, 0x313158, 0x313218};
996		lp = (uint32 *)(ROM_BASE + pm_ofs[ROMType]);
997		while (ntohl(*lp) != 0x7e58eba6) lp++;
998		*lp++ = htonl(POWERPC_NOP);
#	Line 1015 | Line 1028 | static bool patch_nanokernel_boot(void)
1028		*lp++ = htonl(POWERPC_NOP);
1029
1030		// Jump to 68k emulator
1031	<	static const uint32 jump68k_ofs[] = {0x40c, 0x40c, 0x40c, 0x414, 0x438};
1031	>	static const uint32 jump68k_ofs[] = {0x40c, 0x40c, 0x40c, 0x414, 0x434, 0x438};
1032		lp = (uint32 *)(ROM_BASE + loc + jump68k_ofs[ROMType]);
1033		*lp++ = htonl(0x80610634);              // lwz  r3,0x0634(r1)   (pointer to Emulator Data)
1034		*lp++ = htonl(0x8081119c);              // lwz  r4,0x119c(r1)   (pointer to opcode table)
#	Line 1036 | Line 1049 | static bool patch_68k_emul(void)
1049		uint32 base;
1050
1051		// Overwrite twi instructions
1052	<	static const uint32 twi_loc[] = {0x36e680, 0x36e6c0, 0x36e6c0, 0x36e6c0, 0x36e740};
1052	>	static const uint32 twi_loc[] = {0x36e680, 0x36e6c0, 0x36e6c0, 0x36e6c0, 0x36e740, 0x36e740};
1053		base = twi_loc[ROMType];
1054		lp = (uint32 *)(ROM_BASE + base);
1055		*lp++ = htonl(0x48000000 + 0x36f900 - base);            // b 0x36f900 (Emulator start)
#	Line 1418 | Line 1431 | static bool patch_68k(void)
1431		lp[0x28 >> 2] = htonl(0x00000861);
1432		lp[0x58 >> 2] = htonl(0x30200000);
1433		lp[0x60 >> 2] = htonl(0x0000003d);
1434	+	} else if (ROMType == ROMTYPE_GOSSAMER) {
1435	+	base = 0x12d20;
1436	+	lp = (uint32 *)(ROM_BASE + base - 0x14);
1437	+	lp[0x00 >> 2] = htonl(ADDR_MAP_PATCH_SPACE - (base - 0x14));
1438	+	lp[0x10 >> 2] = htonl(0xcc003d11);              // Make it like the PowerMac 9500 UniversalInfo
1439	+	lp[0x14 >> 2] = htonl(0x3fff0401);
1440	+	lp[0x18 >> 2] = htonl(0x0300001c);
1441	+	lp[0x1c >> 2] = htonl(0x000108c4);
1442	+	lp[0x24 >> 2] = htonl(0xc301bf26);
1443	+	lp[0x28 >> 2] = htonl(0x00000861);
1444	+	lp[0x58 >> 2] = htonl(0x30410000);
1445	+	lp[0x60 >> 2] = htonl(0x0000003d);
1446		}
1447
1448		// Construct AddrMap for NewWorld ROM
1449	<	if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_ZANZIBAR) {
1449	>	if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GOSSAMER) {
1450		lp = (uint32 *)(ROM_BASE + ADDR_MAP_PATCH_SPACE);
1451		memset(lp - 10, 0, 0x128);
1452		lp[-10] = htonl(0x0300001c);
#	Line 1547 | Line 1572 | static bool patch_68k(void)
1572		*wp++ = htons(M68K_EMUL_OP_XPRAM2);
1573		*wp = htons(0x4ed3);                    // jmp  (a3)
1574
1575	<	static const uint32 nvram3_loc[] = {0x582f0, 0xa0a0, 0x7e50, 0xa1d0, 0};
1576	<	wp = (uint16 *)(ROM_BASE + nvram3_loc[ROMType]);
1575	>	static const uint8 nvram3_dat[] = {0x4e, 0xd3, 0x06, 0x41, 0x13, 0x00};
1576	>	if ((base = find_rom_data(0x7000, 0xb000, nvram3_dat, sizeof(nvram3_dat))) == 0) return false;
1577	>	D(bug("nvram3 %08lx\n", base));
1578	>	wp = (uint16 *)(ROM_BASE + base + 2);
1579	>	*wp++ = htons(M68K_EMUL_OP_XPRAM3);
1580	>	*wp = htons(0x4ed3);                    // jmp  (a3)
1581	>
1582	>	static const uint32 nvram4_loc[] = {0x582f0, 0xa0a0, 0x7e50, 0xa1d0, 0x538d0, 0};
1583	>	wp = (uint16 *)(ROM_BASE + nvram4_loc[ROMType]);
1584		*wp++ = htons(0x202f);                  // move.l       4(sp),d0
1585		*wp++ = htons(0x0004);
1586		*wp++ = htons(M68K_EMUL_OP_NVRAM1);
#	Line 1561 | Line 1593 | static bool patch_68k(void)
1593		*wp = htons(0x0004);
1594		}
1595
1596	<	static const uint32 nvram4_loc[] = {0x58460, 0xa0f0, 0x7f40, 0xa220, 0};
1597	<	wp = (uint16 *)(ROM_BASE + nvram4_loc[ROMType]);
1596	>	static const uint32 nvram5_loc[] = {0x58460, 0xa0f0, 0x7f40, 0xa220, 0x53a20, 0};
1597	>	wp = (uint16 *)(ROM_BASE + nvram5_loc[ROMType]);
1598		if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GAZELLE) {
1599		*wp++ = htons(0x202f);                  // move.l       4(sp),d0
1600		*wp++ = htons(0x0004);
#	Line 1739 | Line 1771 | static bool patch_68k(void)
1771		if ((base = find_rom_data(0x13000, 0x20000, gc_mask2_dat, sizeof(gc_mask2_dat))) == 0) return false;
1772		D(bug("gc_mask2 %08lx\n", base));
1773		wp = (uint16 *)(ROM_BASE + base);
1774	+	if (ROMType == ROMTYPE_GOSSAMER)
1775	+	*wp++ = htons(M68K_NOP);
1776		for (int i=0; i<5; i++) {
1777		*wp++ = htons(M68K_NOP);
1778		*wp++ = htons(M68K_NOP);
#	Line 1746 | Line 1780 | static bool patch_68k(void)
1780		*wp++ = htons(M68K_NOP);
1781		wp += 2;
1782		}
1783	<	if (ROMType == ROMTYPE_ZANZIBAR) {
1783	>	if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_GOSSAMER) {
1784		for (int i=0; i<6; i++) {
1785		*wp++ = htons(M68K_NOP);
1786		*wp++ = htons(M68K_NOP);
#	Line 1819 | Line 1853 | static bool patch_68k(void)
1853		*wp = htons(M68K_RTS);
1854
1855		// Don't install Time Manager task for 60Hz interrupt (Enable60HzInts, via 0x2b8)
1856	<	if (ROMType == ROMTYPE_NEWWORLD) {
1856	>	if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) {
1857		static const uint8 tm_task_dat[] = {0x30, 0x3c, 0x4e, 0x2b, 0xa9, 0xc9};
1858	<	if ((base = find_rom_data(0x2e0, 0x320, tm_task_dat, sizeof(tm_task_dat))) == 0) return false;
1858	>	if ((base = find_rom_data(0x2a0, 0x320, tm_task_dat, sizeof(tm_task_dat))) == 0) return false;
1859		D(bug("tm_task %08lx\n", base));
1860		wp = (uint16 *)(ROM_BASE + base + 28);
1861		*wp++ = htons(M68K_NOP);
#	Line 1841 | Line 1875 | static bool patch_68k(void)
1875		}
1876
1877		// Don't read PVR from 0x5fffef80 in DriverServicesLib (via 0x316)
1878	<	if (ROMType != ROMTYPE_NEWWORLD) {
1878	>	if (ROMType != ROMTYPE_NEWWORLD && ROMType != ROMTYPE_GOSSAMER) {
1879		uint32 dsl_offset = find_rom_resource(FOURCC('n','l','i','b'), -16401);
1880		if (ROMType == ROMTYPE_ZANZIBAR) {
1881		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};
#	Line 1927 | Line 1961 | static bool patch_68k(void)
1961		D(bug("scsi_var2 %08lx\n", base));
1962		wp = (uint16 *)(ROM_BASE + base);
1963		*wp++ = htons(0x7000);  // moveq #0,d0
1964	<	*wp = htons(M68K_RTS);  // bra
1964	>	*wp = htons(M68K_RTS);
1965	>	}
1966	>	}
1967	>	else if (ROMType == ROMTYPE_GOSSAMER) {
1968	>	static const uint8 scsi_var_dat[] = {0x70, 0x01, 0xa0, 0x89, 0x4a, 0x6e, 0xfe, 0xac, 0x4f, 0xef, 0x00, 0x10, 0x66, 0x00};
1969	>	if ((base = find_rom_data(0x1d700, 0x1d800, scsi_var_dat, sizeof(scsi_var_dat))) != 0) {
1970	>	D(bug("scsi_var %08lx\n", base));
1971	>	wp = (uint16 *)(ROM_BASE + base + 12);
1972	>	*wp = htons(0x6000);    // bra
1973	>	}
1974	>
1975	>	static const uint8 scsi_var2_dat[] = {0x4e, 0x56, 0xfc, 0x5a, 0x48, 0xe7, 0x1f, 0x38};
1976	>	if ((base = find_rom_data(0x1d900, 0x1da00, scsi_var2_dat, sizeof(scsi_var2_dat))) != 0) {
1977	>	D(bug("scsi_var2 %08lx\n", base));
1978	>	wp = (uint16 *)(ROM_BASE + base);
1979	>	*wp++ = htons(0x7000);  // moveq #0,d0
1980	>	*wp = htons(M68K_RTS);
1981		}
1982		}
1983		#endif
#	Line 2007 | Line 2057 | static bool patch_68k(void)
2057		*wp = htons(M68K_RTS);
2058
2059		// Don't install serial drivers from ROM
2060	<	if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_NEWWORLD) {
2060	>	if (ROMType == ROMTYPE_ZANZIBAR || ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) {
2061		wp = (uint16 *)(ROM_BASE + find_rom_resource(FOURCC('S','E','R','D'), 0));
2062		*wp = htons(M68K_RTS);
2063		} else {
#	Line 2191 | Line 2241 | void InstallDrivers(void)
2241		uint8 pb[SIZEOF_IOParam];
2242
2243		// Install floppy driver
2244	<	if (ROMType == ROMTYPE_NEWWORLD) {
2244	>	if (ROMType == ROMTYPE_NEWWORLD || ROMType == ROMTYPE_GOSSAMER) {
2245
2246	<	// Force installation of floppy driver with NewWorld ROMs
2246	>	// Force installation of floppy driver with NewWorld and Gossamer ROMs
2247		r.a[0] = ROM_BASE + sony_offset;
2248		r.d[0] = (uint32)SonyRefNum;
2249		Execute68kTrap(0xa43d, &r);             // DrvrInstallRsrvMem()

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