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A CPU change in preparation for the AOpen AP61.

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OBattler
2024-01-21 20:21:52 +01:00
parent 485e73d4da
commit bd2ef6855a
1 changed files with 13 additions and 7 deletions
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20
src/cpu/cpu.c
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@@ -2372,14 +2372,20 @@ cpu_CPUID(void)
EBX = ECX = 0;
EDX = CPUID_FPU | CPUID_VME | CPUID_PSE | CPUID_TSC | CPUID_MSR | CPUID_PAE | CPUID_MCE | CPUID_CMPXCHG8B | CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_SEP | CPUID_CMOV;
} else if (EAX == 2) {
EAX = 0x03020101; /* Instruction TLB: 4 KB pages, 4-way set associative, 32 entries
Instruction TLB: 4 MB pages, fully associative, 2 entries
Data TLB: 4 KB pages, 4-way set associative, 64 entries */
if (!strcmp(machine_get_internal_name(), "ap61")) {
EAX = 0x00000001;
EDX = 0x00000000;
} else {
EAX = 0x03020101; /* Instruction TLB: 4 KB pages, 4-way set associative, 32 entries
Instruction TLB: 4 MB pages, fully associative, 2 entries
Data TLB: 4 KB pages, 4-way set associative, 64 entries */
EDX = 0x06040a42; /* 2nd-level cache: 256 KB, 4-way set associative, 32-byte line size
1st-level data cache: 8 KB, 2-way set associative, 32-byte line size
Data TLB: 4 MB pages, 4-way set associative, 8 entries
1st-level instruction cache:8 KB, 4-way set associative, 32-byte line size */
}
EBX = ECX = 0;
EDX = 0x06040a42; /* 2nd-level cache: 256 KB, 4-way set associative, 32-byte line size
1st-level data cache: 8 KB, 2-way set associative, 32-byte line size
Data TLB: 4 MB pages, 4-way set associative, 8 entries
1st-level instruction cache:8 KB, 4-way set associative, 32-byte line size */
} else
EAX = EBX = ECX = EDX = 0;
break;