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cpuinfo: Add support for Vortex86 (#290)

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* cpuinfo: Add support for Vortex86

Hardcode cache for family 5, use CPUID cache info for family 6.

* cpuinfo: Add support for Vortex86EX

The EX does not have brand string so hardcode name and cache.

* In determine_cache_size(), add an additional test to ensure that only
Vortex86 CPUs are handled, allowing Zhaoxin CPUs to fall through.
This commit is contained in:
Jonathan Teh
2023-05-20 19:10:05 +01:00
committed by GitHub
parent de4f4768fc
commit a1ef11c3ba
1 changed files with 38 additions and 0 deletions
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38
system/cpuinfo.c
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@@ -86,6 +86,13 @@ static void determine_cache_size()
}
// Zhaoxin CPU only
/* fall through */
case 'V':
// Vortex86
if (cpuid_info.vendor_id.str[0] == 'V' && cpuid_info.version.family < 6) {
// Only family 6 have cache info
break;
}
/* fall through */
case 'G':
if (cpuid_info.vendor_id.str[9] == 'N') {
// National Semiconductor
@@ -846,6 +853,37 @@ static void determine_cpu_model(void)
}
}
break;
case 'V':
// Vortex86 SoC
switch (cpuid_info.version.family) {
case 5:
switch (cpuid_info.version.model) {
case 2:
cpu_model = "Vortex86DX";
l1_cache = 16;
l2_cache = 256;
break;
case 8:
cpu_model = "Vortex86MX/DX2";
l1_cache = 16;
l2_cache = 256;
break;
default:
break;
}
break;
case 6:
// Other family 6 models have brand string
cpu_model = "Vortex86EX";
l1_cache = 16;
l2_cache = 128;
break;
default:
break;
}
break;
default:
// Unknown processor - make a guess at the family.
switch (cpuid_info.version.family) {