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Finally enable boot on MacOS 8.6 Update CD from iMac DV

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- Don't read PVR at ROM_BASE + 0x314600
- Generated code for FC1E and FE0A don't really match comments
- Move FC1E routine base to ROM_BASE + 0x36fb00
- Recognize iMacUpdate 1.1 ROM (nwrom v1.2.1)
This commit is contained in:
gbeauche 2003-05-17 08:42:34 +00:00
parent 0e223c55a3
commit 5843470f9f
1 changed files with 10 additions and 7 deletions
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17
SheepShaver/src/rom_patches.cpp
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@ -915,6 +915,9 @@ static bool patch_nanokernel_boot(void)
lp = (uint32 *)(ROM_BASE + 0x3131f4);
if (ntohl(*lp) == 0x7e5f42a6) // NewWorld ROM
*lp = htonl(0x82400000 + XLM_PVR); // lwz r18,(theoretical PVR)
lp = (uint32 *)(ROM_BASE + 0x314600);
if (ntohl(*lp) == 0x7d3f42a6)
*lp = htonl(0x81200000 + XLM_PVR); // lzw r9,(theoritical PVR)
// Don't read SDR1
static const uint32 sdr1_ofs[] = {0x174, 0x174, 0x174, 0x17c, 0x19c};
@ -1120,7 +1123,7 @@ static bool patch_68k_emul(void)
*lp = htonl(0x4e800020); // blr
// Extra routine for Reset/FC1E opcode
lp = (uint32 *)(ROM_BASE + 0x36fc00);
lp = (uint32 *)(ROM_BASE + 0x36fb00);
*lp++ = htonl(0x7c2903a6); // mtctr r1
*lp++ = htonl(0x80200000 + XLM_IRQ_NEST); // lwz r1,XLM_IRQ_NEST
*lp++ = htonl(0x38210001); // addi r1,r1,1
@ -1141,7 +1144,7 @@ static bool patch_68k_emul(void)
*lp++ = htonl(0x80e10660); // lwz r7,$0660(r1)
*lp++ = htonl(0x7d8802a6); // mflr r12
*lp++ = htonl(0x50e74001); // rlwimi. r7,r7,8,$80000000
*lp++ = htonl(0x814105f4); // lwz r10,0x05f8(r1)
*lp++ = htonl(0x814105f8); // lwz r10,0x05f8(r1)
*lp++ = htonl(0x7d4803a6); // mtlr r10
*lp++ = htonl(0x7d8a6378); // mr r10,r12
*lp++ = htonl(0x3d600002); // lis r11,0x0002
@ -1171,7 +1174,7 @@ static bool patch_68k_emul(void)
*lp++ = htonl(0x80e10660); // lwz r7,$0660(r1)
*lp++ = htonl(0x7d8802a6); // mflr r12
*lp++ = htonl(0x50e74001); // rlwimi. r7,r7,8,$80000000
*lp++ = htonl(0x814105f4); // lwz r10,0x05fc(r1)
*lp++ = htonl(0x814105fc); // lwz r10,0x05fc(r1)
*lp++ = htonl(0x7d4803a6); // mtlr r10
*lp++ = htonl(0x7d8a6378); // mr r10,r12
*lp++ = htonl(0x3d600002); // lis r11,0x0002
@ -1338,7 +1341,7 @@ static bool patch_68k(void)
// Patch UniversalInfo
if (ROMType == ROMTYPE_NEWWORLD) {
static const uint8 univ_info_dat[] = {0x3f, 0xff, 0x04, 0x00};
if ((base = find_rom_data(0x14000, 0x16000, univ_info_dat, sizeof(univ_info_dat))) == 0) return false;
if ((base = find_rom_data(0x14000, 0x18000, univ_info_dat, sizeof(univ_info_dat))) == 0) return false;
D(bug("universal_info %08lx\n", base));
lp = (uint32 *)(ROM_BASE + base - 0x14);
lp[0x00 >> 2] = htonl(ADDR_MAP_PATCH_SPACE - (base - 0x14));
@ -1716,14 +1719,14 @@ static bool patch_68k(void)
// Patch GetCPUSpeed (via 0x27a) (some ROMs have two of them)
static const uint8 cpu_speed_dat[] = {0x20, 0x30, 0x81, 0xf2, 0x5f, 0xff, 0xef, 0xd8, 0x00, 0x04, 0x4c, 0x7c};
if ((base = find_rom_data(0x6000, 0x9000, cpu_speed_dat, sizeof(cpu_speed_dat))) == 0) return false;
if ((base = find_rom_data(0x6000, 0xa000, cpu_speed_dat, sizeof(cpu_speed_dat))) == 0) return false;
D(bug("cpu_speed %08lx\n", base));
wp = (uint16 *)(ROM_BASE + base);
*wp++ = htons(0x203c); // move.l #(MHz<<16)|MHz,d0
*wp++ = htons(CPUClockSpeed / 1000000);
*wp++ = htons(CPUClockSpeed / 1000000);
*wp = htons(M68K_RTS);
if ((base = find_rom_data(base, 0x9000, cpu_speed_dat, sizeof(cpu_speed_dat))) != 0) {
if ((base = find_rom_data(base, 0xa000, cpu_speed_dat, sizeof(cpu_speed_dat))) != 0) {
D(bug("cpu_speed2 %08lx\n", base));
wp = (uint16 *)(ROM_BASE + base);
*wp++ = htons(0x203c); // move.l #(MHz<<16)|MHz,d0
@ -2040,7 +2043,7 @@ static bool patch_68k(void)
if (ROMType == ROMTYPE_NEWWORLD) {
static const uint8 via_int3_dat[] = {0x48, 0xe7, 0xf0, 0xf0, 0x76, 0x01, 0x60, 0x26};
if ((base = find_rom_data(0x15000, 0x18000, via_int3_dat, sizeof(via_int3_dat))) == 0) return false;
if ((base = find_rom_data(0x15000, 0x19000, via_int3_dat, sizeof(via_int3_dat))) == 0) return false;
D(bug("via_int3 %08lx\n", base));
wp = (uint16 *)(ROM_BASE + base); // CHRP level 1 handler
*wp++ = htons(M68K_JMP);